/* ==========================================================================
   学海无涯英语系统 —— 教练端设计系统与样式表 (Coach Client CSS)
   ========================================================================== */

:root {
  --primary: #6366f1; /* Indigo */
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  
  --secondary: #ec4899; /* Pink */
  
  --bg-gradient: linear-gradient(135deg, #09071c 0%, #15112e 50%, #1c183d 100%); /* Premium cosmic dark gradient */
  --sidebar-bg: #0d0a21; /* Slightly darker than workspace for nice depth contrast */
  --sidebar-hover: #1e1b4b;
  --sidebar-active: #4f46e5;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-light: #ffffff;
  
  --card-bg: rgba(255, 255, 255, 0.03); /* Glassmorphism translucent dark card background */
  --card-border: rgba(255, 255, 255, 0.07);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.35);
  
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-family);
  background: var(--bg-gradient);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
}

/* ==========================================================================
   LOGIN SCREEN
   ========================================================================== */

.login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, #09071c 0%, #171239 100%);
}

.login-container {
  display: flex;
  width: 900px;
  height: 550px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.login-branding {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #4f46e5 0%, #312e81 100%);
  color: var(--text-light);
  padding: 40px;
  overflow: hidden;
}

.hexagon-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(129,140,248,0.4) 0%, rgba(0,0,0,0) 70%);
  z-index: 1;
}

.logo-card {
  position: relative;
  z-index: 2;
  text-align: center;
}

.logo-circle {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 110px;
  height: 110px;
  background: #ffffff;
  border-radius: 50%;
  margin-bottom: 24px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.logo-number {
  font-family: 'Outfit', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: #4f46e5;
  background: linear-gradient(135deg, #4f46e5, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.logo-subtitle {
  font-size: 14px;
  opacity: 0.8;
  letter-spacing: 1px;
}

.login-form-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 50px;
  background: rgba(15, 12, 38, 0.8);
}

.login-form-card h2.login-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
  color: #ffffff;
  text-align: center;
}

.login-tabs {
  display: flex;
  background: rgba(255, 255, 255, 0.04);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 24px;
}

.login-tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 9px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.3s ease;
}

.login-tab.active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.input-group {
  position: relative;
  margin-bottom: 16px;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--text-muted);
}

.input-group input {
  width: 100%;
  padding: 14px 14px 14px 44px;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  font-size: 14px;
  outline: none;
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  transition: all 0.3s ease;
}

.input-group input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.input-group input:focus {
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.warning-msg {
  color: #f43f5e;
  font-size: 13px;
  margin-bottom: 16px;
  min-height: 18px;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  border: none;
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
}

.btn-primary:disabled,
.btn-primary.is-loading {
  cursor: wait;
  opacity: 0.75;
  transform: none;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.18);
}

.login-links {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-top: 16px;
  margin-bottom: 24px;
}

.login-links a {
  color: #4f46e5;
  text-decoration: none;
  font-weight: 500;
}

.login-links a:hover {
  text-decoration: underline;
}

.agreement-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.agreement-checkbox a {
  color: #4f46e5;
  text-decoration: none;
}

/* ==========================================================================
   MAIN DASHBOARD LAYOUT
   ========================================================================== */

.dashboard-screen {
  display: flex;
  width: 100%;
  height: 100vh;
}

/* LEFT SIDEBAR */
.sidebar {
  width: 250px;
  background: var(--sidebar-bg);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  z-index: 10;
}

.sidebar.collapsed {
  width: 70px;
}

.sidebar-header {
  height: 70px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: #ffffff;
  color: #4f46e5;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 800;
  font-size: 16px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  margin-left: 12px;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.sidebar.collapsed .logo-text {
  opacity: 0;
  pointer-events: none;
}

.toggle-sidebar {
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background: #4f46e5;
  border: none;
  border-radius: 50%;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar.collapsed .toggle-sidebar {
  transform: translateY(-50%) rotate(180deg);
}

.sidebar-nav {
  flex: 1;
  padding: 20px 0;
  overflow-y: auto;
}

.sidebar-nav ul {
  list-style: none;
}

.sidebar-nav li {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.sidebar-nav li:hover {
  background: var(--sidebar-hover);
  color: #ffffff;
}

.sidebar-nav li.active {
  background: var(--sidebar-active);
  color: #ffffff;
  font-weight: 600;
}

.menu-icon {
  font-size: 20px;
  width: 30px;
  display: inline-block;
  text-align: center;
}

.menu-text {
  margin-left: 8px;
  font-size: 14px;
  transition: opacity 0.2s ease;
}

.sidebar.collapsed .menu-text {
  opacity: 0;
  pointer-events: none;
}

.sidebar-promo {
  margin: 20px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(236,72,153,0.15) 0%, rgba(99,102,241,0.15) 100%);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  text-align: center;
  transition: all 0.2s ease;
}

.sidebar.collapsed .sidebar-promo {
  display: none;
}

.sidebar-promo h4 {
  font-size: 14px;
  font-weight: 700;
  color: #f472b6;
}

.sidebar-promo p {
  font-size: 10px;
  opacity: 0.6;
  margin-bottom: 12px;
}

.btn-promo {
  width: 100%;
  padding: 8px;
  background: #f472b6;
  border: none;
  border-radius: 8px;
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-promo:hover {
  background: #ec4899;
}

/* WORKSPACE */
.workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.header {
  height: 70px;
  background: rgba(15, 12, 38, 0.5); /* Semi-transparent dark header */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.back-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6px;
  border-radius: 50%;
  transition: background 0.2s ease;
}

.back-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.view-title {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff; /* Contrast fix */
}

.student-profile-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.04); /* Translucent dark background */
  padding: 6px 16px 6px 6px;
  border-radius: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.indicator-avatar {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #818cf8, #c084fc);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  font-size: 14px;
}

.indicator-info {
  display: flex;
  flex-direction: column;
}

.indicator-name {
  font-size: 13px;
  font-weight: 600;
  color: #ffffff; /* Readable off-white */
}

.indicator-grade {
  font-size: 10px;
  color: var(--text-muted);
}

.content-wrapper {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
  position: relative;
}

.main-layout-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.view-panel {
  display: none;
}

.view-panel.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   VIEW: HOME (首页)
   ========================================================================== */

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 30px;
  align-items: start;
}

.dashboard-main {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.card-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.section-title .en-sub {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
}

.action-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.action-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.action-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.action-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(31, 38, 135, 0.12);
  border-color: #c7d2fe;
}

.action-icon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  font-size: 24px;
  border-radius: 12px;
}

.bg-pink { background: rgba(236,72,153,0.12); color: #ec4899; }
.bg-yellow { background: rgba(245,158,11,0.12); color: #f59e0b; }
.bg-blue { background: rgba(59,130,246,0.12); color: #3b82f6; }
.bg-green { background: rgba(16,185,129,0.12); color: #10b981; }
.bg-orange { background: rgba(249,115,22,0.12); color: #f97316; }
.bg-red { background: rgba(239,68,68,0.12); color: #ef4444; }
.bg-purple { background: rgba(139,92,246,0.12); color: #8b5cf6; }
.bg-cyan { background: rgba(6,182,212,0.12); color: #06b6d4; }

.action-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: #1e1b4b;
}

.action-card p.en {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* RIGHT SIDE STUDENT WIDGET */
.student-status-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.student-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.student-avatar {
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, #6366f1, #d946ef);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 22px;
  font-weight: 700;
}

.student-meta h4 {
  font-size: 16px;
  font-weight: 700;
}

.student-grade {
  font-size: 10px;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 8px;
  border-radius: 10px;
  color: var(--text-muted);
  font-weight: 600;
  display: inline-block;
  margin-top: 4px;
}

.student-phone {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.student-hours-row {
  display: flex;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 12px 0;
}

.hours-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.hours-item:last-child {
  border-right: none;
}

.hours-num {
  font-size: 18px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
}

.hours-num.highlight {
  color: #6366f1;
}

.hours-lbl {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
}

.recent-class-box {
  background: rgba(99, 102, 241, 0.08);
  border: 1px dashed rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

.recent-class-box span {
  color: var(--text-muted);
}

.recent-class-box strong {
  font-weight: 600;
}

.recent-class-box a {
  color: #818cf8;
  text-decoration: none;
  font-weight: 600;
}

/* PROGRESS GAUGE */
.progress-box {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.progress-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}

.dropdown-container {
  position: relative;
}

.btn-more {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--text-muted);
}

.dropdown-menu {
  position: absolute;
  right: 0;
  top: 24px;
  background: #16132d;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  z-index: 10;
  display: none;
  min-width: 180px;
  max-height: 250px;
  overflow-y: auto;
  color: #f8fafc;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  padding: 10px 14px;
  font-size: 12px;
  cursor: pointer;
  color: #cbd5e1;
  transition: background 0.2s ease;
  white-space: nowrap;
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.circle-chart-container {
  display: flex;
  justify-content: center;
  margin: 12px 0;
}

.progress-circle {
  position: relative;
  width: 110px;
  height: 110px;
}

.radial-progress-bar {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.radial-bg {
  fill: none;
  stroke: #e2e8f0;
  stroke-width: 8;
}

.radial-fill {
  fill: none;
  stroke: #6366f1;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s ease;
}

.circle-val {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 20px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
}

.progress-text-title {
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  margin-top: 4px;
  margin-bottom: 12px;
}

.progress-stats-row {
  display: flex;
  border-top: 1px solid #e2e8f0;
  padding-top: 12px;
}

.progress-stats-row .stat-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.progress-stats-row .stat-col .num {
  font-size: 16px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
}

.progress-stats-row .stat-col .num.highlight {
  color: #10b981;
}

.progress-stats-row .stat-col .lbl {
  font-size: 10px;
  color: var(--text-muted);
}

/* ==========================================================================
   VIEW: WORD LIST (单词训练)
   ========================================================================== */

.word-training-header {
  margin-bottom: 20px;
}

.tabs-row {
  display: flex;
  gap: 8px;
}

.tab-btn {
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--card-border);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: #6366f1;
  color: #ffffff;
  border-color: #6366f1;
}

.vocabulary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.vocab-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 180px;
  transition: all 0.3s ease;
  position: relative;
}

.vocab-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(31, 38, 135, 0.1);
  border-color: #c7d2fe;
}

.vocab-card-body h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
}

.vocab-card-body .preview-link {
  position: absolute;
  right: 20px;
  top: 20px;
  font-size: 12px;
  color: #6366f1;
  text-decoration: none;
  font-weight: 600;
}

.vocab-card-body .preview-link:hover {
  text-decoration: underline;
}

.vocab-stats-row {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}

.v-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

.v-stat .val {
  font-weight: 700;
}

.v-stat.total .icon { color: #8b5cf6; }
.v-stat.waiting .icon { color: #f59e0b; }
.v-stat.done .icon { color: #10b981; }

.vocab-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
}

.btn-learn-now {
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-learn-now:hover {
  background: #6366f1;
  color: #ffffff;
  border-color: #6366f1;
}

/* ==========================================================================
   VIEW: PHONETICS TRAINING (音标训练)
   ========================================================================== */

.phonetic-toggle-bar {
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
}

.phonetic-toggles {
  display: flex;
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--card-border);
  padding: 4px;
  border-radius: 30px;
}

.btn-toggle {
  background: transparent;
  border: none;
  padding: 8px 24px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-toggle.active {
  background: #6366f1;
  color: #ffffff;
}

.phonetic-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.phonetic-block {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.block-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  border-left: 4px solid #6366f1;
  padding-left: 10px;
}

.phonetic-section {
  margin-bottom: 20px;
}

.phonetic-section h5 {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.phonetic-row-connection {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.phonetic-vowel-row {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.phonetic-divider-lines {
  display: flex;
  gap: 28px;
  color: #cbd5e1;
  font-size: 11px;
}

.p-card {
  width: 66px;
  height: 60px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.p-card:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.p-card span.cn {
  font-size: 9px;
  font-weight: 400;
  opacity: 0.8;
  margin-top: 2px;
}

.p-card.bg-orange { background: #f97316; }
.p-card.bg-yellow { background: #eab308; }
.p-card.bg-green { background: #10b981; }
.p-card.bg-blue-light { background: #3b82f6; }
.p-card.bg-blue-dark { background: #1d4ed8; }
.p-card.bg-purple { background: #8b5cf6; }

.phonetic-grid-vowel {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 12px;
}

.phonetic-consonants-grid {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
  gap: 10px;
}

/* ==========================================================================
   VIEW: VOCAB TESTING (词汇量检测)
   ========================================================================== */

.testing-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--card-shadow);
  max-width: 650px;
  margin: 0 auto;
}

.test-progress-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 30px;
}

.test-progress-bar .progress-bar-fill {
  background: #6366f1;
  height: 100%;
  transition: width 0.3s ease;
}

.test-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 12px;
}

.test-timer {
  width: 50px;
  height: 50px;
  border: 3px solid #f43f5e;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
  color: #f43f5e;
}

.test-word {
  font-size: 28px;
  font-weight: 700;
  color: #1e1b4b;
}

.btn-audio {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 22px;
  color: #6366f1;
}

.test-prompt {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.choices-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.choice-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 20px;
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  color: #ffffff;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 12px;
}

.choice-btn:hover {
  background: rgba(99,102,241,0.15);
  border-color: #6366f1;
}

.choice-btn .lbl {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
}

.choice-btn:hover .lbl {
  background: #6366f1;
  color: #ffffff;
}

.test-actions {
  display: flex;
  justify-content: center;
}

.btn-dontknow {
  padding: 12px 30px;
  background: #f1f5f9;
  border: none;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-dontknow:hover {
  background: #e2e8f0;
}

/* Test Result */
.testing-result-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--card-shadow);
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
}

.result-badge {
  font-size: 64px;
  margin-bottom: 16px;
}

.result-score {
  font-size: 48px;
  font-weight: 800;
  color: #6366f1;
  margin: 16px 0;
}

.result-feedback {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ==========================================================================
   VIEW: READ TRAINING (阅读训练)
   ========================================================================== */

.read-filter-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.read-filter-right select {
  padding: 8px 16px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 13px;
  outline: none;
  background: #ffffff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.data-table th, .data-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  background: rgba(99, 102, 241, 0.15);
  font-weight: 700;
  color: #ffffff;
}

.data-table td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: #cbd5e1;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.04);
}

.btn-table-action {
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-table-action:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-table-action.primary {
  background: #6366f1;
  color: #ffffff;
  border-color: #6366f1;
}

.btn-table-action.primary:hover {
  background: #4f46e5;
}

.pagination-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

.pagination-info {
  font-size: 13px;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-page {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-page:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.12);
}

.btn-page.active {
  background: #6366f1;
  color: #ffffff;
  border-color: #6366f1;
}

.select-pagesize {
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border-radius: 6px;
  font-size: 12px;
  margin-left: 8px;
  outline: none;
}

/* Detail View */
.article-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 16px;
}

.article-body {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  line-height: 2.2;
  font-size: 16px;
  color: var(--text-main);
  box-shadow: var(--card-shadow);
  margin-bottom: 24px;
}

.article-word {
  display: inline-block;
  cursor: pointer;
  padding: 0 4px;
  border-radius: 4px;
  transition: all 0.15s ease;
}

.article-word:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #818cf8;
  font-weight: 500;
}

.article-word.selected {
  background: #6366f1;
  color: #ffffff !important;
}

.word-definition-card {
  background: var(--card-bg);
  border: 1px solid #6366f1;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 8px 24px rgba(99,102,241,0.15);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.word-definition-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: #4f46e5;
}

.def-phonetic {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.def-meaning {
  font-size: 14px;
  font-weight: 500;
  margin-top: 10px;
  margin-bottom: 14px;
}

/* ==========================================================================
   VIEW: STUDY REPORT (学习报告)
   ========================================================================== */

.report-tabs {
  display: flex;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 20px;
  overflow-x: auto;
}

.report-tab {
  white-space: nowrap;
  background: transparent;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.report-tab.active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.report-content-box {
  min-height: 400px;
}

.report-subview {
  display: none;
}

.report-subview.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.course-report-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.course-report-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 200px;
}

.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.course-report-card h4 {
  font-size: 14px;
  font-weight: 700;
  color: #1e1b4b;
}

.course-badge {
  background: rgba(99,102,241,0.08);
  color: #6366f1;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.course-report-card .course-ver {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

.course-report-card .course-date {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
}

.course-report-progress {
  margin: 14px 0;
}

.progress-header-info {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  margin-bottom: 6px;
  font-weight: 600;
}

.progress-strip {
  height: 6px;
  background: #f1f5f9;
  border-radius: 3px;
  overflow: hidden;
}

.progress-strip .fill {
  background: #6366f1;
  height: 100%;
}

.report-card-stats {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--text-muted);
}

.report-card-stats span strong {
  color: var(--text-main);
  font-weight: 600;
}

.btn-report-detail {
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-report-detail:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Certificate View */
.certificate-container {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.certificate-frame {
  width: 600px;
  background: #ffffff;
  border: 10px double #6366f1;
  padding: 40px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
  position: relative;
  color: #1f2937;
}

.cert-gold-badge {
  font-size: 48px;
  margin-bottom: 12px;
}

.cert-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 6px;
  color: #1e1b4b;
}

.cert-en-title {
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  letter-spacing: 2px;
  margin-bottom: 30px;
}

.cert-body {
  font-size: 15px;
  line-height: 2;
  text-align: left;
  margin-bottom: 40px;
  padding: 0 20px;
  color: #1f2937;
}

.cert-highlight {
  color: #4f46e5;
  font-weight: 700;
}

.cert-footer {
  display: flex;
  justify-content: flex-end;
}

.cert-stamp-box {
  position: relative;
  text-align: center;
  padding-right: 20px;
}

.cert-stamp {
  font-size: 12px;
  font-weight: 600;
  color: #1f2937;
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 4px;
  margin-bottom: 6px;
}

.cert-stamp::after {
  content: "★";
  position: absolute;
  right: 10px;
  top: -10px;
  width: 70px;
  height: 70px;
  border: 2px solid rgba(239,68,68,0.4);
  border-radius: 50%;
  color: rgba(239,68,68,0.4);
  font-size: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  transform: rotate(-15deg);
}

.cert-date {
  font-size: 11px;
  color: #6b7280;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

/* ==========================================================================
   VIEW: PERSONAL CENTER (个人中心)
   ========================================================================== */

.personal-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 30px;
  align-items: start;
}

.personal-side-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  box-shadow: var(--card-shadow);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #818cf8, #f472b6);
  color: #ffffff;
  font-size: 36px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

.personal-side-card h3 {
  font-size: 18px;
  font-weight: 700;
}

.profile-grade {
  font-size: 11px;
  background: #f1f5f9;
  padding: 2px 10px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 6px;
  margin-bottom: 10px;
}

.profile-agent {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.personal-side-card .btn-primary {
  margin-bottom: 24px;
}

.profile-completeness {
  width: 100%;
  text-align: left;
  border-top: 1px solid #e2e8f0;
  padding-top: 20px;
}

.comp-label {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}

.comp-label span {
  font-weight: 600;
  color: var(--text-main);
}

.comp-bar {
  height: 6px;
  background: #e2e8f0;
  border-radius: 3px;
  overflow: hidden;
}

.comp-bar .fill {
  background: #10b981;
  height: 100%;
}

.personal-main-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--card-shadow);
}

.personal-main-card .card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 24px;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 12px;
}

.info-details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.info-detail-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.info-detail-item .label {
  font-size: 12px;
  color: var(--text-muted);
}

.info-detail-item .val {
  font-size: 14px;
  font-weight: 600;
}

/* ==========================================================================
   VIEW: AI ESSAY CORRECT (AI作文批改)
   ========================================================================== */

.essay-grading-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.essay-input-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--card-shadow);
}

.essay-input-box h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.essay-input-box p.desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.essay-input-box textarea {
  width: 100%;
  height: 180px;
  padding: 16px;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  margin-bottom: 16px;
  resize: vertical;
}

.essay-input-box textarea:focus {
  border-color: #6366f1;
}

/* Result panel */
.essay-result-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: slideUp 0.3s ease;
}

.result-score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 16px;
}

.result-score-row .lbl {
  font-size: 16px;
  font-weight: 700;
}

.result-score-row .score {
  font-size: 36px;
  font-weight: 800;
  color: #10b981;
  font-family: 'Outfit', sans-serif;
}

.result-feedback-card h4, .result-corrections-card h4, .result-compare-card h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}

.result-feedback-card p {
  font-size: 13px;
  line-height: 1.6;
}

.suggestions-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.suggestion-item {
  background: rgba(239,68,68,0.05);
  border-left: 4px solid #ef4444;
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 12px;
}

.suggestion-item .orig {
  text-decoration: line-through;
  color: #ef4444;
  font-weight: 600;
  margin-right: 8px;
}

.suggestion-item .repl {
  color: #10b981;
  font-weight: 600;
  margin-right: 12px;
}

.suggestion-item .desc {
  color: var(--text-muted);
}

.corrected-text {
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--card-border);
  padding: 16px;
  border-radius: var(--radius-md);
  line-height: 1.8;
  font-size: 14px;
}

/* ==========================================================================
   MODAL DIALOGS (弹出框)
   ========================================================================== */

dialog {
  border: none;
  background: transparent;
  outline: none;
  margin: auto;
}

dialog::backdrop {
  background: rgba(30, 27, 75, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Verification Write-off dialog */
.write-off-modal {
  width: 420px;
  background: #16132d;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  overflow: hidden;
  padding: 24px;
  color: #f8fafc;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.btn-close {
  background: transparent;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-muted);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-row label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.form-row input, .form-row select {
  width: 100%;
  padding: 12px;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border-radius: 8px;
  font-size: 13px;
  outline: none;
}

.form-row select option {
  background: #16132d;
  color: #ffffff;
}

.form-row input:focus, .form-row select:focus {
  border-color: #6366f1;
}

.warning-box {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.2);
  padding: 12px;
  border-radius: 8px;
  font-size: 11px;
  line-height: 1.6;
  color: #d97706;
  margin-bottom: 20px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 16px;
}

.btn-secondary {
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

/* Word Study Flashcard Dialog */
.word-study-modal {
  width: 480px;
  background: #16132d;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  padding: 24px;
  overflow: hidden;
  color: #f8fafc;
}

.study-progress {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.study-flashcard {
  text-align: center;
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.study-flashcard h2 {
  font-size: 32px;
  font-weight: 700;
  color: #ffffff;
}

.study-phonetic {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

.btn-audio-circle {
  width: 40px;
  height: 40px;
  background: rgba(99,102,241,0.08);
  border: none;
  border-radius: 50%;
  color: #6366f1;
  font-size: 14px;
  cursor: pointer;
  margin-top: 16px;
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 600;
}

.btn-audio-circle:hover {
  background: #6366f1;
  color: #ffffff;
}

.study-meaning-box {
  width: 100%;
  animation: fadeIn 0.3s ease;
}

.study-meaning-box .divider {
  height: 1px;
  background: #e2e8f0;
  margin: 16px 0;
}

.study-meaning-box .translation {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #4f46e5;
}

.example-box {
  background: #f8fafc;
  border-radius: 8px;
  padding: 12px;
  text-align: left;
}

.example-box p.en {
  font-size: 12px;
  font-weight: 500;
  line-height: 1.6;
}

.example-box p.zh {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.actions-front {
  display: flex;
  width: 100%;
  gap: 12px;
}

.btn-study-unknown {
  flex: 1;
  padding: 12px;
  border: 1px solid #fca5a5;
  background: #fef2f2;
  color: #ef4444;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-study-known {
  flex: 1;
  padding: 12px;
  border: 1px solid #6ee7b7;
  background: #ecfdf5;
  color: #10b981;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.actions-back {
  width: 100%;
}

/* Edit student profile modal */
.edit-profile-modal {
  width: 480px;
  background: #16132d;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  padding: 24px;
  color: #f8fafc;
}

.form-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ==========================================================================
   GLOBAL UTILITIES
   ========================================================================== */

/* Custom Toast message */
.coach-toast {
  position: fixed;
  left: 50%;
  bottom: 50px;
  transform: translateX(-50%);
  background: rgba(30, 27, 75, 0.9);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  z-index: 10000;
  animation: slideUp 0.3s ease;
}

/* Custom class in index.html control panel */
.coach-link-btn {
  display: inline-block;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #ffffff !important;
  padding: 8px 16px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  margin-top: 10px;
  box-shadow: 0 4px 10px rgba(99,102,241,0.2);
  transition: all 0.2s ease;
}

.coach-link-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(99,102,241,0.3);
}

/* Tree/Hierarchical Textbook structure */
.stage-section {
  margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--card-shadow);
}

.stage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  cursor: pointer;
  user-select: none;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(236, 72, 153, 0.08));
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: all 0.3s ease;
}

.stage-header:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(236, 72, 153, 0.15));
}

.stage-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.stage-arrow {
  font-size: 12px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.stage-section.collapsed .stage-arrow {
  transform: rotate(-90deg);
}

.stage-content {
  transition: max-height 0.3s ease-out;
  overflow: hidden;
}

.stage-section.collapsed .stage-content {
  display: none;
}

/* Grade Collapsible Styling */
.grade-collapse-section {
  margin-left: 12px;
  margin-right: 12px;
  margin-bottom: 12px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.grade-collapse-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.grade-collapse-header:hover {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 12px rgba(31, 38, 135, 0.04);
}

.grade-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.grade-collapse-icon {
  font-size: 10px;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.grade-collapse-section.collapsed .grade-collapse-icon {
  transform: rotate(-90deg);
}

.grade-title-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.grade-count-badge {
  font-size: 11px;
  color: #6366f1;
  background: rgba(99, 102, 241, 0.1);
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 500;
}

.grade-collapse-content {
  padding: 16px 12px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-top: none;
}

.grade-collapse-section.collapsed .grade-collapse-content {
  display: none;
}

/* OCR Upload & Scan Animation */
.ocr-dropzone:hover {
  border-color: #6366f1 !important;
  background: rgba(99, 102, 241, 0.05);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.scan-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.scan-image-preview-wrapper {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* Green laser scan effect */
.laser-scanner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(180deg, rgba(16, 185, 129, 0), rgba(16, 185, 129, 1));
  box-shadow: 0 0 8px #10b981;
  animation: laserScan 2.5s infinite ease-in-out;
}

@keyframes laserScan {
  0% {
    top: 0%;
  }
  50% {
    top: 100%;
  }
  100% {
    top: 0%;
  }
}

/* Review table style overrides */
.review-input {
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  width: 100%;
  background: rgba(255, 255, 255, 0.8);
  outline: none;
}

.review-input:focus {
  border-color: #6366f1;
  background: #ffffff;
}

.btn-row-delete {
  background: transparent;
  border: none;
  color: #ef4444;
  font-size: 14px;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-row-delete:hover {
  background: rgba(239, 68, 68, 0.1);
  transform: scale(1.1);
}

/* Active student row in management table */
.student-row.active-student-row td {
  background: rgba(99, 102, 241, 0.15) !important;
  border-left: 3px solid #6366f1;
}

.student-row:hover td {
  background: rgba(255, 255, 255, 0.05);
}

#searchStudentInput:focus {
  border-color: #6366f1 !important;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Classroom Word Showcase gradient card */
.class-word-showcase {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(138, 79, 255, 0.15) 100%);
  border: 1px solid rgba(138, 79, 255, 0.25);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.classroom-word-item-btn:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  border-color: rgba(255, 255, 255, 0.15) !important;
}

/* ==========================================================================
   VIEW: 1V1 Classroom Bright Teaching Theme
   ========================================================================== */

.dashboard-screen.classroom-bright-mode {
  background:
    radial-gradient(circle at 56% 0%, rgba(139, 92, 246, 0.1), transparent 34%),
    linear-gradient(180deg, #eef2ff 0%, #ffffff 48%, #fff7ed 100%);
  color: #111827;
}

.dashboard-screen.classroom-bright-mode .sidebar {
  background: rgba(255, 255, 255, 0.88);
  border-right: 1px solid #e0e7ff;
  box-shadow: 10px 0 30px rgba(99, 102, 241, 0.08);
}

.dashboard-screen.classroom-bright-mode .sidebar-header {
  border-bottom-color: #e0e7ff;
}

.dashboard-screen.classroom-bright-mode .logo-icon {
  background: #8b5cf6;
  color: #ffffff;
}

.dashboard-screen.classroom-bright-mode .logo-text,
.dashboard-screen.classroom-bright-mode .sidebar-nav li,
.dashboard-screen.classroom-bright-mode .menu-text,
.dashboard-screen.classroom-bright-mode .indicator-name,
.dashboard-screen.classroom-bright-mode .view-title {
  color: #111827;
}

.dashboard-screen.classroom-bright-mode .sidebar-nav li:hover {
  background: #f3f0ff;
}

.dashboard-screen.classroom-bright-mode .sidebar-nav li.active {
  background: #ede9fe;
  color: #6d28d9;
  border-right: 4px solid #8b5cf6;
}

.dashboard-screen.classroom-bright-mode .sidebar-promo {
  background: #fff7ed;
  border-color: #fed7aa;
  box-shadow: 0 12px 28px rgba(249, 115, 22, 0.08);
}

.dashboard-screen.classroom-bright-mode .header {
  background: rgba(255, 255, 255, 0.9);
  border-bottom-color: #e0e7ff;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.08);
}

.dashboard-screen.classroom-bright-mode .back-btn {
  color: #111827;
}

.dashboard-screen.classroom-bright-mode .back-btn:hover {
  background: #f3f0ff;
}

.dashboard-screen.classroom-bright-mode .student-profile-indicator {
  background: #ffffff;
  border-color: #e0e7ff;
  box-shadow: 0 10px 24px rgba(99, 102, 241, 0.08);
}

.dashboard-screen.classroom-bright-mode .indicator-grade {
  color: #64748b;
}

.dashboard-screen.classroom-bright-mode .content-wrapper {
  background:
    radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.08), transparent 34%),
    linear-gradient(180deg, #eef2ff 0%, #ffffff 52%, #fff7ed 100%);
}

.dashboard-screen.classroom-bright-mode .main-layout-container {
  max-width: 1420px;
}

#viewClassroom {
  color: #111827;
}

#viewClassroom .classroom-setup-card,
#viewClassroom .class-info-bar,
#viewClassroom .word-interactive-stage,
#viewClassroom #classViewVocabTest,
#viewClassroom #classViewTeach > div:not(.class-word-showcase),
#viewClassroom #classViewAntiForget > div {
  background: rgba(255, 255, 255, 0.94) !important;
  border: 1px solid #e0e7ff !important;
  border-radius: 24px !important;
  box-shadow: 0 20px 52px rgba(99, 102, 241, 0.1) !important;
}

#viewClassroom .classroom-setup-card {
  padding: 28px !important;
}

#viewClassroom .classroom-setup-card h3,
#viewClassroom .classroom-setup-card label,
#viewClassroom .word-interactive-stage h5,
#viewClassroom #classViewAntiForget h5,
#viewClassroom #classViewAntiForget span,
#viewClassroom #classViewTeach h5 {
  color: #111827 !important;
}

#viewClassroom .classroom-setup-card .desc,
#viewClassroom .class-info-bar span,
#viewClassroom .class-info-bar label,
#viewClassroom .class-info-bar p,
#viewClassroom #classViewAntiForget p,
#viewClassroom #classViewTeach p,
#viewClassroom #classViewTeach #classWordExampleChinese {
  color: #64748b !important;
}

#viewClassroom input,
#viewClassroom select,
#viewClassroom #activeClassStudentUrl {
  background: #ffffff !important;
  border: 1px solid #c7d2fe !important;
  color: #111827 !important;
  border-radius: 14px !important;
  box-shadow: 0 8px 18px rgba(99, 102, 241, 0.06);
}

#viewClassroom input:focus,
#viewClassroom select:focus {
  border-color: #8b5cf6 !important;
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.14) !important;
}

#viewClassroom .class-info-bar {
  padding: 18px 20px !important;
}

#viewClassroom #activeClassId {
  color: #7c3aed !important;
}

#viewClassroom #activeClassStudent {
  color: #0891b2 !important;
}

#viewClassroom .btn-table-action,
#viewClassroom .btn-primary {
  border-radius: 14px !important;
  font-weight: 900 !important;
}

#viewClassroom .btn-table-action:not(.error) {
  background: #ffffff !important;
  border: 1px solid #c7d2fe !important;
  color: #111827 !important;
}

#viewClassroom .btn-primary {
  background: linear-gradient(135deg, #8b5cf6, #6366f1) !important;
  border: 0 !important;
  color: #ffffff !important;
  box-shadow: 0 14px 28px rgba(99, 102, 241, 0.24) !important;
}

#viewClassroom .btn-table-action.error {
  background: #ef4444 !important;
  color: #ffffff !important;
}

#viewClassroom .classroom-grid {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) !important;
  gap: 0 !important;
  min-height: 400px;
}

#viewClassroom .classroom-words-list {
  display: flex;
  flex-direction: column;
  gap: 10px !important;
  max-height: min(66vh, 620px) !important;
  overflow-y: auto;
  padding-right: 4px;
}

#viewClassroom .classroom-package-count {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid #dbeafe;
  border-radius: 16px;
  background: #f8fafc;
  color: #475569;
  font-size: 14px;
  font-weight: 900;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease;
}

#viewClassroom .classroom-package-count:hover {
  transform: translateY(-1px);
  border-color: #8b5cf6;
  background: #f3f0ff;
  color: #6d28d9;
  box-shadow: 0 12px 24px rgba(124, 58, 237, 0.12);
}

#viewClassroom .classroom-package-count span {
  pointer-events: none;
}

#viewClassroom .classroom-word-preview-modal[hidden] {
  display: none !important;
}

#viewClassroom .classroom-word-preview-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 28px;
}

#viewClassroom .classroom-word-preview-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.42);
  backdrop-filter: blur(6px);
}

#viewClassroom .classroom-word-preview-panel {
  position: relative;
  z-index: 1;
  width: min(560px, 92vw);
  max-height: min(760px, 88vh);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  border-radius: 24px;
  border: 1px solid #dbeafe;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 30px 90px rgba(15, 23, 42, 0.22);
}

#viewClassroom .classroom-word-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e0e7ff;
}

#viewClassroom .classroom-word-preview-header h4 {
  margin: 0;
  color: #111827;
  font-size: 20px;
  font-weight: 950;
}

#viewClassroom .classroom-word-preview-header p {
  margin: 4px 0 0;
  color: #64748b;
  font-size: 13px;
  font-weight: 800;
}

#viewClassroom .classroom-preview-close {
  width: 38px;
  height: 38px;
  border: 1px solid #dbeafe;
  border-radius: 50%;
  background: #ffffff;
  color: #475569;
  font-size: 24px;
  line-height: 1;
  font-weight: 700;
  cursor: pointer;
}

#viewClassroom .classroom-word-item-btn {
  min-height: 58px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 2px solid #e5e7eb;
  background: #f8fafc;
  color: #111827;
  cursor: pointer;
  text-align: left;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease;
}

#viewClassroom .classroom-word-item-btn span {
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-weight: 950;
  font-size: 15px;
}

#viewClassroom .classroom-word-item-btn small {
  color: #64748b;
  font-size: 13px;
  font-weight: 800;
  text-align: right;
}

#viewClassroom .classroom-word-item-btn:hover {
  transform: translateY(-1px);
  background: #f3f0ff !important;
  border-color: #c4b5fd !important;
  box-shadow: 0 12px 26px rgba(124, 58, 237, 0.1);
}

#viewClassroom .classroom-word-item-btn.active {
  background: #ede9fe !important;
  border-color: #8b5cf6 !important;
  box-shadow: 0 14px 30px rgba(124, 58, 237, 0.14);
}

#viewClassroom .classroom-word-item-btn.known {
  border-color: #bbf7d0;
  background: #ecfdf5;
}

#viewClassroom .classroom-word-item-btn.known small {
  color: #16a34a;
}

#viewClassroom .classroom-word-item-btn.unknown {
  border-color: #fed7aa;
  background: #fff7ed;
}

#viewClassroom .classroom-word-item-btn.unknown small {
  color: #f97316;
}

#viewClassroom .word-interactive-stage {
  padding: 24px !important;
  gap: 18px !important;
}

#viewClassroom .word-interactive-stage > div:first-child {
  border-bottom: 1px solid #e0e7ff !important;
}

#viewClassroom .word-interactive-stage .login-tab {
  min-height: 44px !important;
  padding: 10px 18px !important;
  border-radius: 999px !important;
  background: #ffffff !important;
  border: 1px solid #e0e7ff !important;
  color: #475569 !important;
  font-size: 13px !important;
  font-weight: 950 !important;
}

#viewClassroom .word-interactive-stage .login-tab.active {
  background: #ede9fe !important;
  border-color: #8b5cf6 !important;
  color: #6d28d9 !important;
  box-shadow: 0 12px 24px rgba(124, 58, 237, 0.12);
}

#viewClassroom .class-word-showcase {
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 42px 24px !important;
  border-radius: 30px !important;
  border: 1px solid #e0e7ff !important;
  background:
    radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.08), transparent 44%),
    #ffffff !important;
  box-shadow: 0 24px 64px rgba(99, 102, 241, 0.12) !important;
}

#viewClassroom #classWordDisplay {
  color: #1f2937 !important;
  font-family: 'Outfit', sans-serif !important;
  font-weight: 950 !important;
  letter-spacing: 0 !important;
}

#viewClassroom #classWordDisplay {
  font-size: clamp(58px, 7vw, 104px) !important;
  line-height: 1.05 !important;
}

#viewClassroom .class-word-showcase div {
  color: #7c3aed !important;
  font-size: 22px !important;
  font-weight: 900 !important;
}

#viewClassroom .class-teach-word-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

#viewClassroom #classViewTeach .class-teach-training-section {
  display: none !important;
}

#viewClassroom #classViewTeach.class-teach-training-active .class-teach-screening-panel {
  display: none !important;
}

#viewClassroom .class-teach-screening-panel,
#viewClassroom .class-teach-training-panel,
#viewClassroom .class-teach-paperbox-panel,
#viewClassroom .class-teach-detail-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px !important;
}

#viewClassroom .class-teach-screening-header,
#viewClassroom .class-teach-training-header,
#viewClassroom .class-teach-paperbox-header,
#viewClassroom .class-teach-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

#viewClassroom .class-teach-screening-header h3,
#viewClassroom .class-teach-training-header h3,
#viewClassroom .class-teach-paperbox-header h3 {
  margin: 0;
  color: #111827;
  font-size: 28px;
  font-weight: 950;
}

#viewClassroom .class-teach-screening-header p,
#viewClassroom .class-teach-training-header p,
#viewClassroom .class-teach-paperbox-header p {
  margin: 6px 0 0;
  color: #64748b;
  font-size: 14px;
  font-weight: 800;
}

#viewClassroom .class-teach-screening-summary {
  display: grid;
  grid-template-columns: repeat(2, 110px);
  gap: 12px;
}

#viewClassroom .class-teach-screening-summary > div {
  min-height: 84px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 22px;
  border: 1px solid #e0e7ff;
  background: #f8fafc;
}

#viewClassroom .class-teach-screening-summary span {
  color: #64748b !important;
  font-size: 13px;
  font-weight: 900;
}

#viewClassroom .class-teach-screening-summary b {
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-size: 34px;
  line-height: 1;
}

#viewClassroom .class-teach-screening-summary > div:first-child {
  background: #ecfdf5;
  border-color: #bbf7d0;
}

#viewClassroom .class-teach-screening-summary > div:first-child b {
  color: #16a34a;
}

#viewClassroom .class-teach-screening-summary > div:last-child {
  background: #fff7ed;
  border-color: #fed7aa;
}

#viewClassroom .class-teach-screening-summary > div:last-child b {
  color: #f97316;
}

#viewClassroom .class-teach-screening-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

#viewClassroom .class-teach-training-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
}

#viewClassroom .class-teach-tool-btn,
#viewClassroom .class-teach-start-btn {
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid #dbe4ff;
  background: #ffffff;
  color: #475569;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 950;
  cursor: pointer;
}

#viewClassroom .class-teach-tool-btn.active,
#viewClassroom .class-teach-start-btn {
  background: #7c3aed;
  color: #ffffff;
  border-color: #7c3aed;
}

#viewClassroom .class-teach-start-btn:disabled,
#viewClassroom .class-teach-start-btn.disabled {
  background: #e5e7eb;
  color: #94a3b8;
  border-color: #cbd5e1;
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.85;
}

#viewClassroom .class-teach-start-btn {
  margin-left: auto;
  padding: 0 26px;
  box-shadow: 0 14px 28px rgba(124, 58, 237, 0.18);
}

#viewClassroom .class-teach-screening-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 620px;
  overflow: auto;
  padding-right: 8px;
}

#viewClassroom .class-teach-screening-row {
  min-height: 92px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  border: 2px solid #e5e7eb;
  border-radius: 24px;
  background: #f8fafc;
}

#viewClassroom .class-teach-screening-row.active {
  border-color: #93c5fd;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08);
}

#viewClassroom .class-teach-screening-row.known {
  border-color: #bbf7d0;
  background: #f0fdf4;
}

#viewClassroom .class-teach-screening-row.unknown {
  border-color: #fed7aa;
  background: #fff7ed;
}

#viewClassroom .class-teach-screening-word {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

#viewClassroom .class-teach-screening-word span {
  color: #111827 !important;
  font-family: 'Outfit', sans-serif;
  font-size: 36px;
  font-weight: 800;
}

#viewClassroom .class-teach-screening-word small {
  color: #94a3b8;
  font-size: 18px;
  font-weight: 800;
}

#viewClassroom .class-teach-screening-actions {
  display: grid;
  grid-template-columns: repeat(2, 130px);
  gap: 12px;
}

#viewClassroom .class-teach-yesno-btn {
  min-height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  background: #ffffff;
  color: #64748b;
  font-size: 18px;
  font-weight: 900;
  cursor: pointer;
}

#viewClassroom .class-teach-yesno-btn span {
  width: 22px;
  height: 22px;
  border: 2px solid #d1d5db;
  border-radius: 50%;
  background: #ffffff;
}

#viewClassroom .class-teach-yesno-btn.yes.selected {
  background: #dcfce7;
  border-color: #22c55e;
  color: #166534;
}

#viewClassroom .class-teach-yesno-btn.yes.selected span {
  background: #22c55e;
  border-color: #22c55e;
}

#viewClassroom .class-teach-yesno-btn.no.selected {
  background: #ffedd5;
  border-color: #f97316;
  color: #9a3412;
}

#viewClassroom .class-teach-yesno-btn.no.selected span {
  background: #f97316;
  border-color: #f97316;
}

#viewClassroom .class-teach-unknown-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#viewClassroom .class-teach-unknown-chip {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 2px solid #fed7aa;
  border-radius: 16px;
  background: #fff7ed;
  color: #111827;
  cursor: pointer;
}

#viewClassroom .class-teach-unknown-chip span {
  font-family: 'Outfit', sans-serif;
  font-size: 19px;
  font-weight: 950;
}

#viewClassroom .class-teach-unknown-chip small {
  color: #9a3412;
  font-size: 13px;
  font-weight: 800;
}

#viewClassroom .class-teach-unknown-chip.active {
  border-color: #7c3aed;
  background: #ede9fe;
}

#viewClassroom .class-teach-empty {
  width: 100%;
  padding: 22px;
  border: 1px dashed #c7d2fe;
  border-radius: 18px;
  color: #64748b;
  font-weight: 800;
  text-align: center;
}

#viewClassroom .class-teach-memory-row {
  min-height: 92px;
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(170px, 220px) auto;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 2px solid #e5e7eb;
  border-radius: 20px;
  background: #ffffff;
}

#viewClassroom .class-teach-memory-row.active {
  border-color: #7c3aed;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

#viewClassroom .class-teach-memory-row.guided {
  border-color: #c4b5fd;
  background: #faf5ff;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.08);
}

#viewClassroom .class-teach-memory-row.guided.active {
  border-color: #8b5cf6;
  box-shadow:
    0 0 0 4px rgba(124, 58, 237, 0.12),
    0 14px 30px rgba(124, 58, 237, 0.08);
}

#viewClassroom .class-teach-memory-row.completed {
  border-color: #22c55e;
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.1);
}

#viewClassroom .class-teach-memory-row.completed.active {
  border-color: #22c55e;
  box-shadow:
    0 0 0 4px rgba(34, 197, 94, 0.14),
    0 14px 30px rgba(34, 197, 94, 0.1);
}

#viewClassroom .class-teach-memory-word {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-align: left;
}

#viewClassroom .class-teach-memory-word-main {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

#viewClassroom .class-teach-memory-word-text {
  border: 0;
  background: transparent;
  padding: 0;
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-size: 30px;
  font-weight: 950;
  letter-spacing: 0;
  cursor: pointer;
}

#viewClassroom .class-teach-memory-audio-btn {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #dbe4ff;
  border-radius: 999px;
  background: #f8fafc;
  color: #6d28d9;
  font-size: 17px;
  cursor: pointer;
}

#viewClassroom .class-teach-memory-audio-btn:hover,
#viewClassroom .class-teach-memory-audio-btn:focus-visible {
  border-color: #a78bfa;
  background: #ede9fe;
  outline: none;
}

#viewClassroom .class-teach-memory-word small {
  color: #7c3aed;
  font-size: 14px;
  font-weight: 850;
}

#viewClassroom .class-teach-memory-meaning {
  min-height: 74px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid #bbf7d0;
  border-radius: 14px;
  background: #ecfdf5;
  color: #166534;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 900;
}

#viewClassroom .class-teach-memory-meaning.visible {
  border-color: #bbf7d0;
  background: #ecfdf5;
  color: #166534;
}

#viewClassroom .class-teach-memory-meaning.hidden {
  border-style: dashed;
  border-color: #c7d2fe;
  background: #f8fafc;
  color: #64748b;
}

#viewClassroom .class-teach-memory-meaning > span {
  display: block;
  text-align: center;
}

#viewClassroom .class-teach-meaning-toggle {
  width: 32px;
  height: 24px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #475569;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}

#viewClassroom .class-teach-memory-meaning.hidden .class-teach-meaning-toggle::after {
  content: "";
  width: 24px;
  height: 2px;
  position: absolute;
  top: 50%;
  left: 50%;
  background: #ef4444;
  border-radius: 999px;
  transform: translate(-50%, -50%) rotate(-28deg);
}

#viewClassroom .class-teach-memory-actions {
  display: grid;
  grid-template-columns: repeat(2, 88px);
  gap: 10px;
}

#viewClassroom .class-teach-memory-actions button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 0;
  border-radius: 14px;
  background: #ede9fe;
  color: #6d28d9;
  font-size: 14px;
  font-weight: 950;
  cursor: pointer;
}

#viewClassroom .class-teach-memory-actions button:last-child {
  background: #e0f2fe;
  color: #0369a1;
}

#viewClassroom .class-teach-memory-actions button.done {
  background: #dcfce7;
  color: #166534;
  box-shadow: inset 0 0 0 1px #86efac;
}

#viewClassroom .class-teach-step-check {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: #22c55e;
  color: #ffffff;
  font-size: 12px;
  font-weight: 950;
  line-height: 1;
}

#viewClassroom .class-teach-paperbox-summary {
  min-width: 118px;
  min-height: 84px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid #ddd6fe;
  border-radius: 22px;
  background: #f5f3ff;
}

#viewClassroom .class-teach-paperbox-summary span {
  color: #64748b !important;
  font-size: 13px;
  font-weight: 900;
}

#viewClassroom .class-teach-paperbox-summary b {
  color: #7c3aed;
  font-family: 'Outfit', sans-serif;
  font-size: 34px;
  line-height: 1;
}

#viewClassroom .class-teach-paperbox-list {
  display: block;
}

#viewClassroom .class-teach-paperbox-gameboard {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#viewClassroom .class-teach-paperbox-goal {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 260px);
  gap: 14px;
  align-items: center;
  border: 1px solid #dbeafe;
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(240, 253, 250, 0.94)),
    radial-gradient(circle at 100% 0%, rgba(20, 184, 166, 0.14), transparent 30%);
  padding: 14px 16px;
}

#viewClassroom .class-teach-paperbox-goal span,
#viewClassroom .class-teach-paperbox-mastered > span {
  display: block;
  color: #64748b !important;
  font-size: 12px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-goal strong {
  display: block;
  margin-top: 4px;
  color: #0f172a;
  font-size: 18px;
  line-height: 1.25;
}

#viewClassroom .class-teach-paperbox-progress {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: #e2e8f0;
}

#viewClassroom .class-teach-paperbox-progress i {
  display: block;
  width: var(--paperbox-progress, 0%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #14b8a6, #22c55e);
  box-shadow: 0 0 18px rgba(20, 184, 166, 0.3);
  transition: width 260ms ease;
}

#viewClassroom .class-teach-paperbox-workbench {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(360px, 1.1fr);
  gap: 16px;
  align-items: stretch;
}

#viewClassroom .class-teach-paperbox-bin,
#viewClassroom .class-teach-paperbox-focus,
#viewClassroom .class-teach-paperbox-mastered {
  border: 1px solid #e0e7ff;
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.08);
}

#viewClassroom .class-teach-paperbox-bin {
  position: relative;
  min-height: 320px;
  overflow: hidden;
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.96), rgba(239, 246, 255, 0.94)),
    radial-gradient(circle at 16% 10%, rgba(251, 191, 36, 0.12), transparent 24%);
}

#viewClassroom .class-teach-paperbox-bin::before {
  content: "";
  position: absolute;
  inset: auto 20px 0;
  height: 76px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-bottom: 0;
  border-radius: 26px 26px 0 0;
  background: linear-gradient(180deg, rgba(226, 232, 240, 0.66), rgba(203, 213, 225, 0.26));
  pointer-events: none;
}

#viewClassroom .class-teach-paperbox-bin-head {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

#viewClassroom .class-teach-paperbox-bin-head span {
  color: #334155 !important;
  font-size: 13px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-bin-head b {
  display: inline-grid;
  place-items: center;
  min-width: 38px;
  height: 34px;
  border-radius: 12px;
  background: #0f172a;
  color: #ffffff;
  font-family: 'Outfit', sans-serif;
  font-size: 20px;
}

#viewClassroom .class-teach-paperbox-strips {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

#viewClassroom .class-teach-paper-strip {
  position: relative;
  min-height: 74px;
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  border: 1px solid #dbe4ff;
  border-radius: 14px 14px 18px 12px;
  background: #fffdf7;
  color: #0f172a;
  padding: 11px 12px;
  text-align: left;
  cursor: pointer;
  box-shadow: 0 10px 18px rgba(15, 23, 42, 0.07);
  transform: rotate(-0.4deg);
}

#viewClassroom .class-teach-paper-strip:nth-child(2n) {
  transform: rotate(0.6deg);
  background: #f8fafc;
}

#viewClassroom .class-teach-paper-strip.active {
  border-color: #7c3aed;
  background: #f5f3ff;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.11), 0 14px 28px rgba(79, 70, 229, 0.13);
  transform: translateY(-2px);
}

#viewClassroom .class-teach-paper-strip.mastered {
  border-color: #86efac;
  background: #f0fdf4;
  transform: none;
}

#viewClassroom .class-teach-paper-strip-pin {
  width: 8px;
  height: 48px;
  border-radius: 999px;
  background: #f59e0b;
}

#viewClassroom .class-teach-paper-strip.active .class-teach-paper-strip-pin {
  background: #7c3aed;
}

#viewClassroom .class-teach-paper-strip.mastered .class-teach-paper-strip-pin {
  background: #22c55e;
}

#viewClassroom .class-teach-paper-strip-main {
  min-width: 0;
}

#viewClassroom .class-teach-paper-strip strong {
  display: block;
  color: #111827;
  font-size: 17px;
  line-height: 1.15;
}

#viewClassroom .class-teach-paper-strip small {
  display: block;
  margin-top: 5px;
  color: #64748b;
  font-size: 12px;
  font-weight: 850;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#viewClassroom .class-teach-paper-strip em {
  position: absolute;
  top: 8px;
  right: 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.07);
  color: #475569;
  padding: 2px 7px;
  font-size: 10px;
  font-style: normal;
  font-weight: 950;
}

#viewClassroom .class-teach-paper-strip.active em {
  background: #ede9fe;
  color: #6d28d9;
}

#viewClassroom .class-teach-paper-strip.mastered em {
  background: #dcfce7;
  color: #15803d;
}

#viewClassroom .class-teach-paperbox-focus {
  display: flex;
  align-items: center;
  padding: 18px;
  background:
    radial-gradient(circle at 90% 12%, rgba(124, 58, 237, 0.13), transparent 26%),
    #ffffff;
}

#viewClassroom .class-teach-paperbox-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 104px;
  align-items: stretch;
  gap: 14px;
  width: 100%;
}

#viewClassroom .class-teach-paperbox-card {
  min-height: 178px;
  display: grid;
  grid-template-columns: 1fr;
  align-content: center;
  gap: 16px;
  padding: 22px;
  border: 2px solid #e5e7eb;
  border-radius: 22px;
  background:
    linear-gradient(180deg, #ffffff, #f8fafc),
    radial-gradient(circle at 0 0, rgba(20, 184, 166, 0.1), transparent 30%);
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.09);
}

#viewClassroom .class-teach-paperbox-card-kicker {
  width: fit-content;
  border-radius: 999px;
  background: #eff6ff;
  color: #2563eb;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-row.active .class-teach-paperbox-card {
  border-color: #7c3aed;
  box-shadow:
    0 0 0 4px rgba(124, 58, 237, 0.1),
    0 14px 30px rgba(15, 23, 42, 0.08);
}

#viewClassroom .class-teach-paperbox-cut {
  min-width: 104px;
  min-height: 104px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  align-self: center;
  border: 0;
  border-radius: 22px;
  background: linear-gradient(135deg, #14b8a6, #22c55e);
  color: #ffffff;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 16px 30px rgba(20, 184, 166, 0.24);
}

#viewClassroom .class-teach-paperbox-cut span {
  font-size: 34px;
}

#viewClassroom .class-teach-paperbox-cut small {
  font-size: 14px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-cut:hover,
#viewClassroom .class-teach-paperbox-cut:focus-visible {
  background: linear-gradient(135deg, #0f766e, #16a34a);
  outline: none;
  transform: translateY(-1px);
}

#viewClassroom .class-teach-paperbox-row.cutting .class-teach-paperbox-card {
  animation: classPaperBoxCutCard 360ms ease forwards;
}

#viewClassroom .class-teach-paperbox-row.cutting .class-teach-paperbox-cut {
  animation: classPaperBoxScissorSnap 360ms ease forwards;
}

@keyframes classPaperBoxScissorSnap {
  0% {
    transform: rotate(0deg) scale(1);
  }

  35% {
    transform: rotate(-14deg) scale(1.08);
  }

  65% {
    transform: rotate(10deg) scale(0.96);
  }

  100% {
    transform: rotate(0deg) scale(1);
  }
}

@keyframes classPaperBoxCutCard {
  0% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }

  45% {
    opacity: 1;
    transform: translateX(8px) scale(0.99);
  }

  100% {
    opacity: 0;
    transform: translateX(42px) translateY(-8px) rotate(2deg) scale(0.95);
  }
}

#viewClassroom .class-teach-paperbox-mastered {
  padding: 14px;
}

#viewClassroom .class-teach-paperbox-mastered > div {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(136px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

#viewClassroom .class-teach-paperbox-complete {
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid #dbeafe;
  border-radius: 26px;
  background:
    radial-gradient(circle at 84% 14%, rgba(34, 197, 94, 0.14), transparent 24%),
    linear-gradient(180deg, #ffffff, #f0fdf4);
  color: #0f172a;
  text-align: center;
  padding: 28px;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
}

#viewClassroom .class-teach-paperbox-complete-badge {
  border-radius: 999px;
  background: #dcfce7;
  color: #15803d;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-complete b {
  color: #0f172a;
  font-size: 30px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-complete span {
  color: #64748b;
  font-size: 14px;
  font-weight: 850;
}

#viewClassroom .class-teach-paperbox-complete-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(90px, 1fr));
  gap: 10px;
  width: min(440px, 100%);
  margin-top: 8px;
}

#viewClassroom .class-teach-paperbox-complete-stats div {
  border: 1px solid #dbeafe;
  border-radius: 16px;
  background: #ffffff;
  padding: 12px;
}

#viewClassroom .class-teach-paperbox-complete-stats span {
  color: #64748b;
  font-size: 12px;
  font-weight: 950;
}

#viewClassroom .class-teach-paperbox-complete-stats strong {
  display: block;
  margin-top: 4px;
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-size: 28px;
  line-height: 1;
}

#viewClassroom .class-teach-paperbox-complete-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

#viewClassroom .class-teach-paperbox-complete-actions button {
  min-width: 128px;
  min-height: 44px;
  border: 0;
  border-radius: 12px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 950;
  cursor: pointer;
}

#viewClassroom .class-teach-paperbox-complete-actions button.retry {
  background: #f97316;
}

#viewClassroom .class-teach-paperbox-complete-actions button.next {
  background: #7c3aed;
}

#viewClassroom .class-teach-paperbox-complete-actions button.post-test {
  background: #0ea5e9;
}

#viewClassroom .class-teach-paperbox-complete-actions button:disabled {
  background: #cbd5e1;
  color: #64748b;
  cursor: not-allowed;
}

@media (max-width: 1100px) {
  #viewClassroom .class-teach-paperbox-workbench {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-teach-paperbox-bin {
    min-height: 240px;
  }
}

@media (max-width: 720px) {
  #viewClassroom .class-teach-paperbox-goal {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-teach-paperbox-row {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-teach-paperbox-cut {
    width: 100%;
    min-height: 56px;
    flex-direction: row;
  }

  #viewClassroom .class-teach-paperbox-complete-stats {
    grid-template-columns: 1fr;
  }
}

#viewClassroom .class-teach-detail-header {
  justify-content: flex-start;
}

#viewClassroom .class-teach-detail-header span {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border-radius: 999px;
  background: #ede9fe;
  color: #6d28d9;
  font-size: 14px;
  font-weight: 950;
}

#viewClassroom .class-teach-detail-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  border: 1px solid #e0e7ff;
  border-radius: 24px;
  background: #ffffff;
  padding: 28px;
  box-shadow: 0 24px 64px rgba(99, 102, 241, 0.12);
}

#viewClassroom .class-teach-detail-card.extension-card {
  gap: 14px;
  padding: 22px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
}

#viewClassroom .class-teach-detail-word {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

#viewClassroom .class-teach-detail-panel.extension-active .class-teach-detail-word {
  justify-content: flex-start;
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
}

#viewClassroom .class-teach-detail-word h2 {
  margin: 0;
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-size: 72px;
  line-height: 1;
  font-weight: 950;
  letter-spacing: 0;
}

#viewClassroom .class-teach-detail-panel.extension-active .class-teach-detail-word h2 {
  font-size: 52px;
}

#viewClassroom .class-teach-detail-panel.extension-active .class-teach-audio-btn {
  width: 56px;
  height: 56px;
  font-size: 24px;
}

#viewClassroom .class-teach-detail-phonetic {
  color: #7c3aed;
  text-align: center;
  font-size: 18px;
  font-weight: 900;
}

#viewClassroom .class-teach-detail-panel.extension-active .class-teach-detail-phonetic {
  max-width: 1120px;
  width: 100%;
  margin: -8px auto 4px;
  text-align: left;
  font-size: 17px;
}

#viewClassroom .class-teach-detail-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

#viewClassroom .class-teach-detail-body.pronunciation-layout {
  grid-template-columns: 1fr;
  max-width: 1040px;
  width: 100%;
  margin: 0 auto;
}

#viewClassroom .class-teach-detail-body.extension-layout {
  grid-template-columns: 1fr;
  max-width: 1120px;
  width: 100%;
  margin: 0 auto;
  gap: 16px;
}

#viewClassroom .class-teach-detail-section {
  min-height: 126px;
  border: 1px solid #e5e7eb;
  border-radius: 18px;
  background: #f8fafc;
  padding: 18px;
}

#viewClassroom .class-teach-detail-section h4 {
  margin: 0 0 10px;
  color: #111827;
  font-size: 15px;
  font-weight: 950;
}

#viewClassroom .class-teach-detail-section p,
#viewClassroom .class-teach-detail-section li {
  margin: 0;
  color: #1f2937;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 750;
}

#viewClassroom .class-teach-detail-section ul {
  margin: 0;
  padding-left: 20px;
}

#viewClassroom .class-teach-extension-hero {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  align-items: center;
  gap: 22px;
  padding: 18px;
  border: 0;
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(240, 253, 250, 0.95), rgba(239, 246, 255, 0.95));
}

#viewClassroom .class-teach-extension-hero h4,
#viewClassroom .class-teach-extension-example h4,
#viewClassroom .class-teach-extension-section h4 {
  margin: 0 0 14px;
  color: #111827;
  font-size: 18px;
  font-weight: 950;
}

#viewClassroom .class-teach-meaning-pill {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 20px;
  border: 2px solid #86efac;
  border-radius: 14px;
  background: #ecfdf5;
  color: #166534;
  font-size: 20px;
  font-weight: 950;
}

#viewClassroom .class-teach-extension-hero p {
  margin: 12px 0 0;
  color: #475569;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 800;
}

#viewClassroom .class-teach-word-visual {
  width: 148px;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 50% 34%, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.28) 48%, transparent 49%),
    linear-gradient(135deg, rgba(254, 240, 138, 0.95), rgba(254, 243, 199, 0.96));
  color: #7c3aed;
  box-shadow: 0 18px 40px rgba(245, 158, 11, 0.16);
}

#viewClassroom .class-teach-word-visual span {
  font-family: 'Outfit', sans-serif;
  font-size: 68px;
  line-height: 1;
  font-weight: 950;
}

#viewClassroom .class-teach-word-visual.semantic span {
  font-family: Apple Color Emoji, Segoe UI Emoji, Noto Color Emoji, sans-serif;
  font-size: 74px;
  font-weight: 400;
  filter: drop-shadow(0 10px 18px rgba(15, 23, 42, 0.12));
}

#viewClassroom .class-teach-word-visual.semantic span:has(+ small) {
  letter-spacing: 0;
}

#viewClassroom .class-teach-word-visual img {
  width: 82px;
  height: 82px;
  object-fit: contain;
  filter: drop-shadow(0 10px 18px rgba(15, 23, 42, 0.12));
}

#viewClassroom .class-teach-word-visual.fallback {
  background:
    linear-gradient(135deg, rgba(253, 230, 138, 0.92), rgba(254, 243, 199, 0.94));
}

#viewClassroom .class-teach-word-visual small {
  color: #92400e;
  font-size: 13px;
  font-weight: 950;
}

#viewClassroom .class-teach-extension-example,
#viewClassroom .class-teach-extension-section {
  padding: 18px 20px;
  border: 0;
  border-radius: 20px;
  background: #ffffff;
  box-shadow: inset 0 0 0 1px #e5e7eb;
}

#viewClassroom .class-teach-extension-example .en {
  margin: 0;
  color: #111827;
  font-size: 23px;
  line-height: 1.55;
  font-weight: 850;
}

#viewClassroom .class-teach-extension-example mark {
  background: transparent;
  color: #7c3aed;
  font-weight: 950;
}

#viewClassroom .class-teach-extension-example .zh {
  margin: 10px 0 0;
  color: #64748b;
  font-size: 18px;
  line-height: 1.6;
  font-weight: 800;
}

#viewClassroom .class-teach-memory-methods {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

#viewClassroom .class-teach-memory-method {
  min-height: 74px;
  padding: 14px 16px;
  border-radius: 16px;
}

#viewClassroom .class-teach-memory-method.method-1 {
  background: #ecfeff;
}

#viewClassroom .class-teach-memory-method.method-2 {
  background: #eff6ff;
}

#viewClassroom .class-teach-memory-method.method-3 {
  background: #fff7ed;
}

#viewClassroom .class-teach-memory-method b {
  display: inline-flex;
  margin-bottom: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: #0f172a;
  font-size: 15px;
  font-weight: 950;
}

#viewClassroom .class-teach-memory-method p {
  margin: 0;
  color: #475569;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 800;
}

#viewClassroom .class-teach-usage-tabs {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

#viewClassroom .class-teach-usage-group > span {
  display: inline-flex;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 3px solid #8b5cf6;
  color: #7c3aed;
  font-size: 16px;
  font-weight: 950;
}

#viewClassroom .class-teach-usage-group > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

#viewClassroom .class-teach-usage-group article {
  position: relative;
  min-height: 82px;
  padding: 14px 52px 14px 14px;
  border: 1px solid #e0e7ff;
  border-radius: 16px;
  background: #f8fafc;
}

#viewClassroom .class-teach-usage-group article.no-audio {
  padding-right: 14px;
}

#viewClassroom .class-teach-mini-audio {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #dbe4ff;
  border-radius: 999px;
  background: #ffffff;
  color: #7c3aed;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(124, 58, 237, 0.08);
}

#viewClassroom .class-teach-mini-audio:hover {
  transform: translateY(-1px);
  border-color: #a78bfa;
  background: #f5f3ff;
}

#viewClassroom .class-teach-usage-group strong {
  display: block;
  color: #111827;
  font-size: 17px;
  font-weight: 950;
}

#viewClassroom .class-teach-usage-group small {
  display: block;
  margin-top: 8px;
  color: #64748b;
  font-size: 14px;
  line-height: 1.45;
  font-weight: 800;
}

#viewClassroom .class-teach-usage-group.part-of-speech > div {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr);
  gap: 12px;
}

#viewClassroom .class-teach-usage-group.sentence > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

#viewClassroom .class-teach-usage-group.sentence article {
  min-height: 76px;
}

#viewClassroom .class-teach-pos-row > div {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid #e0e7ff;
  border-radius: 16px;
  background: #f8fafc;
}

#viewClassroom .class-teach-pos-row small {
  margin: 0;
  padding: 4px 8px;
  border-radius: 999px;
  background: #ede9fe;
  color: #6d28d9;
  font-size: 12px;
  line-height: 1;
  font-weight: 950;
}

#viewClassroom .class-teach-pos-row strong {
  display: inline;
  color: #111827;
  font-size: 18px;
  font-weight: 950;
}

#viewClassroom .class-teach-pos-row em {
  color: #64748b;
  font-size: 15px;
  line-height: 1.4;
  font-style: normal;
  font-weight: 850;
}

#viewClassroom .class-teach-placeholder {
  color: #94a3b8 !important;
}

#viewClassroom .class-teach-example-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#viewClassroom .class-teach-example-block small {
  color: #64748b;
  font-size: 14px;
  font-weight: 800;
}

#viewClassroom .class-teach-syllables {
  display: block;
  color: #6d28d9;
  font-family: 'Outfit', sans-serif;
  font-size: 34px;
  line-height: 1.25;
  font-weight: 950;
  letter-spacing: 0;
}

#viewClassroom .class-teach-pronunciation-steps {
  margin: 0;
  padding-left: 22px;
}

#viewClassroom .class-teach-pronunciation-steps li + li {
  margin-top: 8px;
}

#viewClassroom .class-teach-audio-btn {
  width: 72px;
  height: 72px;
  flex: 0 0 auto;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #ede9fe, #e0f2fe);
  color: #6d28d9;
  font-size: 30px;
  cursor: pointer;
  box-shadow: 0 14px 32px rgba(124, 58, 237, 0.16);
}

#viewClassroom .class-teach-mark-panel {
  display: grid !important;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: stretch;
  padding: 18px !important;
}

#viewClassroom .class-teach-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

#viewClassroom .class-teach-stat-card {
  min-height: 86px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 14px;
  border: 1px solid #e0e7ff;
  border-radius: 18px;
  background: #f8fafc;
  text-align: center;
}

#viewClassroom .class-teach-stat-card span {
  color: #64748b !important;
  font-size: 12px;
  font-weight: 900;
}

#viewClassroom .class-teach-stat-card b {
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-size: 28px;
  line-height: 1;
}

#viewClassroom .class-teach-stat-card.known {
  background: #ecfdf5;
  border-color: #bbf7d0;
}

#viewClassroom .class-teach-stat-card.known b {
  color: #16a34a;
}

#viewClassroom .class-teach-stat-card.unknown {
  background: #fff7ed;
  border-color: #fed7aa;
}

#viewClassroom .class-teach-stat-card.unknown b {
  color: #f97316;
}

#viewClassroom .class-teach-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

#viewClassroom .class-teach-mark-btn,
#viewClassroom .class-teach-strengthen-btn {
  min-height: 68px;
  border-radius: 20px;
  border: 2px solid #e5e7eb;
  background: #ffffff;
  color: #111827;
  font-size: 20px;
  font-weight: 950;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(99, 102, 241, 0.08);
}

#viewClassroom .class-teach-mark-btn.known {
  border-color: #bbf7d0;
  background: #ecfdf5;
  color: #166534;
}

#viewClassroom .class-teach-mark-btn.known.active {
  border-color: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.16);
}

#viewClassroom .class-teach-mark-btn.unknown {
  border-color: #fed7aa;
  background: #fff7ed;
  color: #9a3412;
}

#viewClassroom .class-teach-mark-btn.unknown.active {
  border-color: #f97316;
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.16);
}

#viewClassroom .class-teach-strengthen-btn {
  min-height: 56px;
  background: linear-gradient(135deg, #8b5cf6, #6366f1);
  border: 0;
  color: #ffffff;
}

#viewClassroom #classWordTranslation,
#viewClassroom #classWordExample {
  color: #111827 !important;
  font-size: 17px !important;
  font-weight: 800 !important;
}

#viewClassroom #classRecognitionAttemptsContainer {
  background: #f8fafc;
  border-radius: 16px;
  padding: 10px !important;
}

#viewClassroom .class-antiforget-config,
#viewClassroom .class-antiforget-summary,
#viewClassroom .class-antiforget-stage {
  color: #111827;
}

#viewClassroom .class-antiforget-config {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 360px);
  gap: 18px;
  align-items: flex-start;
  padding: 18px !important;
}

#viewClassroom .class-antiforget-kicker {
  display: inline-flex;
  margin-bottom: 8px;
  color: #7c3aed !important;
  font-size: 12px;
  font-weight: 950;
}

#viewClassroom .class-antiforget-config h3 {
  margin: 0;
  font-size: 20px;
  color: #111827;
}

#viewClassroom .class-antiforget-config p {
  margin: 6px 0 0;
  font-size: 12px;
  color: #64748b !important;
}

#viewClassroom .class-antiforget-controls {
  display: flex;
  flex-direction: column;
  gap: 7px;
  align-self: stretch;
  padding: 10px;
  border: 1px solid #e6ecff;
  border-radius: 14px;
  background: #f8faff;
}

#viewClassroom .class-antiforget-controls label {
  font-size: 12px;
  font-weight: 900;
  color: #475569;
}

#viewClassroom .class-antiforget-controls select {
  width: 100%;
  min-height: 38px;
  border: 1px solid #c7d2fe;
  border-radius: 10px;
  background: #ffffff;
  color: #111827;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 800;
  outline: none;
}

#viewClassroom .class-antiforget-plan-btn {
  width: 100%;
  min-height: 40px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: #ffffff;
  font-size: 13px;
  font-weight: 950;
  cursor: pointer;
}

#viewClassroom .class-antiforget-plan-btn:disabled {
  cursor: progress;
  opacity: 0.72;
}

#viewClassroom .class-antiforget-summary {
  display: grid;
  grid-template-columns: minmax(88px, 120px) 1fr;
  gap: 12px;
  align-items: center;
  padding: 16px !important;
}

#viewClassroom .class-antiforget-summary b {
  display: block;
  color: #111827;
  font-size: 32px;
  line-height: 1;
}

#viewClassroom .class-antiforget-summary p {
  margin: 4px 0 0;
  color: #64748b !important;
  font-size: 12px;
}

#viewClassroom .class-antiforget-stage {
  padding: 16px !important;
}

#viewClassroom .class-antiforget-card {
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  border-radius: 22px;
  border: 1px solid #e0e7ff;
  background: #ffffff;
}

#viewClassroom .class-antiforget-card h2 {
  margin: 8px 0;
  color: #111827;
  font-family: 'Outfit', sans-serif;
  font-size: clamp(48px, 6vw, 82px);
  line-height: 1;
}

#viewClassroom .class-antiforget-card p {
  max-width: 680px;
  margin: 0 0 8px;
  color: #94a3b8 !important;
  font-size: 13px;
  font-weight: 800;
}

#viewClassroom .class-antiforget-card p.is-visible {
  color: #475569 !important;
  font-size: 15px;
}

#viewClassroom .class-antiforget-translation-toggle {
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid #dbeafe;
  border-radius: 999px;
  background: #f8fafc;
  color: #475569;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
}

#viewClassroom .class-antiforget-translation-toggle:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

#viewClassroom .class-antiforget-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  margin: 14px auto 0;
  padding: 8px;
  border: 1px solid #e6ecff;
  border-radius: 16px;
  background: #f8faff;
}

#viewClassroom .class-antiforget-actions.is-hidden {
  display: none;
}

#viewClassroom .class-antiforget-choice,
#viewClassroom .class-antiforget-nav-btn {
  min-height: 42px;
  border-radius: 12px;
  border: 1px solid #d8e0ff;
  background: #ffffff;
  color: #111827;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 950;
  cursor: pointer;
}

#viewClassroom .class-antiforget-choice {
  position: relative;
  min-width: 112px;
  overflow: visible;
}

#viewClassroom .class-antiforget-choice span {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-right: 6px;
  border-radius: 7px;
  background: rgba(15, 23, 42, 0.08);
  font-size: 12px;
}

#viewClassroom .class-antiforget-choice.known {
  border-color: #86efac;
  background: #f0fdf4;
  color: #166534;
}

#viewClassroom .class-antiforget-choice.known.active {
  border-color: #15803d;
  background: linear-gradient(135deg, #16a34a, #22c55e);
  color: #ffffff;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.22), 0 14px 26px rgba(22, 101, 52, 0.24);
}

#viewClassroom .class-antiforget-choice.unknown {
  border-color: #fdba74;
  background: #fff7ed;
  color: #9a3412;
}

#viewClassroom .class-antiforget-choice.unknown.active {
  border-color: #c2410c;
  background: linear-gradient(135deg, #ea580c, #f97316);
  color: #ffffff;
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.22), 0 14px 26px rgba(154, 52, 18, 0.24);
}

#viewClassroom .class-antiforget-choice.active span {
  background: rgba(255, 255, 255, 0.92);
  color: #111827;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.12);
}

#viewClassroom .class-antiforget-choice.active::after {
  content: "✓ 已选";
  position: absolute;
  top: -12px;
  right: -10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: #111827;
  color: #ffffff;
  font-size: 11px;
  font-weight: 950;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.18);
}

#viewClassroom .class-antiforget-nav-btn {
  min-width: 84px;
  color: #334155;
}

#viewClassroom .class-antiforget-nav-btn:disabled {
  cursor: not-allowed;
  opacity: 0.46;
  background: #f1f5f9;
  color: #94a3b8;
}

#viewClassroom .class-antiforget-nav-btn.is-finish {
  border-color: #8b5cf6;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: #ffffff;
  box-shadow: 0 10px 22px rgba(79, 70, 229, 0.2);
}

#viewClassroom .class-antiforget-card.is-summary {
  align-items: stretch;
  min-height: 360px;
  padding: 0;
  text-align: left;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 16%, rgba(124, 58, 237, 0.13), transparent 26%),
    radial-gradient(circle at 24% 88%, rgba(20, 184, 166, 0.12), transparent 24%),
    #ffffff;
}

.class-antiforget-complete-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 18px;
  width: 100%;
  padding: 22px;
}

.class-antiforget-complete-main {
  min-width: 0;
}

.class-antiforget-complete-copy {
  margin-bottom: 14px;
}

.class-antiforget-complete-copy span {
  color: #7c3aed;
  font-size: 13px;
  font-weight: 950;
}

.class-antiforget-complete-copy h3 {
  margin: 4px 0 0;
  color: #0f172a;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.15;
}

.class-antiforget-complete-copy p {
  max-width: 560px;
  margin: 8px 0 0 !important;
  color: #64748b !important;
  font-size: 14px !important;
  line-height: 1.55;
}

.class-antiforget-complete-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 0;
}

.class-antiforget-complete-stats div {
  border: 1px solid #e7edff;
  border-radius: 14px;
  background: #f8faff;
  padding: 12px;
}

.class-antiforget-complete-stats span,
.class-antiforget-next-review span {
  display: block;
  color: #64748b;
  font-size: 12px;
  font-weight: 900;
}

.class-antiforget-complete-stats b {
  display: block;
  margin-top: 6px;
  color: #0f172a;
  font-size: 28px;
  line-height: 1;
}

.class-antiforget-complete-stats b.known {
  color: #16a34a;
}

.class-antiforget-complete-stats b.unknown {
  color: #ea580c;
}

.class-antiforget-next-review {
  margin: 14px 0 0;
  border: 1px solid #ddd6fe;
  border-radius: 16px;
  background: #f5f3ff;
  padding: 16px;
}

.class-antiforget-next-review strong {
  display: block;
  margin-top: 6px;
  color: #4c1d95;
  font-size: 20px;
  line-height: 1.25;
}

.class-antiforget-next-review p {
  margin: 8px 0 0;
  color: #475569;
  font-size: 13px;
  line-height: 1.5;
}

.class-antiforget-complete-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 0;
}

.class-antiforget-curve-card {
  position: relative;
  min-height: 280px;
  border: 1px solid #ddd6fe;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(248, 250, 255, 0.96), rgba(245, 243, 255, 0.9));
  padding: 18px;
  overflow: hidden;
}

.class-antiforget-curve-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.class-antiforget-curve-head span {
  color: #7c3aed;
  font-size: 12px;
  font-weight: 950;
}

.class-antiforget-curve-head strong {
  color: #334155;
  font-size: 13px;
}

.class-antiforget-curve-hero {
  position: absolute;
  top: 74px;
  left: 28px;
  z-index: 1;
}

.class-antiforget-curve-hero b {
  display: block;
  color: #111827;
  font-size: 42px;
  line-height: 1;
}

.class-antiforget-curve-hero span {
  display: block;
  margin-top: 4px;
  color: #64748b;
  font-size: 12px;
  font-weight: 900;
}

.class-antiforget-curve-svg {
  width: 100%;
  height: 190px;
  margin-top: 8px;
  overflow: visible;
}

.class-antiforget-curve-grid {
  fill: none;
  stroke: #e4e9ff;
  stroke-width: 1;
  stroke-dasharray: 5 8;
}

.class-antiforget-curve-forget {
  fill: none;
  stroke: #cbd5e1;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 8 8;
}

.class-antiforget-curve-fill {
  fill: url(#classAntiForgetCurveFill);
}

.class-antiforget-curve-review {
  fill: none;
  stroke: #7c3aed;
  stroke-width: 6;
  stroke-linecap: round;
  filter: drop-shadow(0 10px 12px rgba(124, 58, 237, 0.18));
}

.class-antiforget-curve-points circle {
  fill: #ffffff;
  stroke: #7c3aed;
  stroke-width: 4;
}

.class-antiforget-curve-rates text {
  fill: #4c1d95;
  font-size: 13px;
  font-weight: 950;
  text-anchor: middle;
}

.class-antiforget-curve-labels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 2px;
  color: #64748b;
  font-size: 11px;
  font-weight: 900;
  text-align: center;
}

.class-antiforget-curve-card p {
  max-width: none !important;
  margin: 12px 0 0 !important;
  color: #64748b !important;
  font-size: 12px !important;
  line-height: 1.45;
}

.class-antiforget-repeat-btn,
.class-antiforget-secondary-btn {
  min-height: 42px;
  border-radius: 12px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 950;
  cursor: pointer;
}

.class-antiforget-repeat-btn {
  border: 0;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(79, 70, 229, 0.2);
}

.class-antiforget-complete-done {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #bbf7d0;
  border-radius: 12px;
  background: #f0fdf4;
  color: #15803d;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 950;
}

.class-antiforget-secondary-btn {
  border: 1px solid #dbe4ff;
  background: #ffffff;
  color: #334155;
}

@media (max-width: 640px) {
  .class-antiforget-complete-panel {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .class-antiforget-complete-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .class-antiforget-complete-actions {
    flex-direction: column;
  }

  .class-antiforget-curve-card {
    min-height: 250px;
  }
}

@media (max-width: 980px) {
  #viewClassroom .class-antiforget-config {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-antiforget-actions {
    width: 100%;
  }
}

#viewClassroom #classViewVocabTest {
  background: rgba(255, 255, 255, 0.96) !important;
  padding: 22px !important;
}

#viewClassroom #classVocabStatsStrip,
#viewClassroom #classVocabQuestionHost,
#viewClassroom #classVocabResultCard,
#viewClassroom #classViewVocabTest > div {
  border-color: #e0e7ff !important;
  border-radius: 22px !important;
}

#viewClassroom #classVocabQuestionHost {
  box-shadow: 0 24px 64px rgba(99, 102, 241, 0.1) !important;
}

#viewClassroom .class-vocab-report-card {
  display: none;
  flex-direction: column;
  gap: 14px;
  padding: 18px;
  border: 1px solid #e0e7ff;
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 24px 64px rgba(99, 102, 241, 0.1);
}

#viewClassroom .class-vocab-report-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid #eef2ff;
}

#viewClassroom .class-vocab-report-header h4 {
  margin: 0;
  color: #111827;
  font-size: 20px;
  font-weight: 950;
}

#viewClassroom .class-vocab-report-header p {
  margin: 4px 0 0;
  color: #64748b;
  font-size: 12px;
  font-weight: 700;
}

#viewClassroom .class-vocab-report-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

#viewClassroom .class-vocab-report-actions button {
  height: 34px;
  padding: 0 14px;
  border: 1px solid #ddd6fe;
  border-radius: 8px;
  background: #7c3aed;
  color: #ffffff;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
}

#viewClassroom .class-vocab-report-printable {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

#viewClassroom .class-vocab-report-profile,
#viewClassroom .class-vocab-report-cover,
#viewClassroom .class-vocab-report-section {
  position: relative;
  overflow: hidden;
  border: 1px solid #eef2ff;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.08);
}

#viewClassroom .class-vocab-report-profile,
#viewClassroom .class-vocab-report-cover,
#viewClassroom .class-vocab-report-advice {
  grid-column: 1 / -1;
}

#viewClassroom .class-vocab-report-profile {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px;
  background: #f8f7ff;
}

#viewClassroom .class-vocab-report-avatar,
#viewClassroom .class-vocab-report-logo,
#viewClassroom .class-vocab-report-score-badge {
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #ffffff;
  font-weight: 950;
}

#viewClassroom .class-vocab-report-avatar {
  width: 66px;
  height: 66px;
  background: #e8d49b;
  font-size: 32px;
}

#viewClassroom .class-vocab-report-logo {
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, #8b5cf6, #6d28d9);
  font-family: 'Outfit', sans-serif;
  font-size: 18px;
}

#viewClassroom .class-vocab-report-cover {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  background: #f3edff;
}

#viewClassroom .class-vocab-report-section {
  padding: 18px;
}

#viewClassroom .class-vocab-report-profile h5,
#viewClassroom .class-vocab-report-cover h5,
#viewClassroom .class-vocab-report-section h5 {
  margin: 0;
  color: #1f2937;
  font-size: 17px;
  font-weight: 950;
}

#viewClassroom .class-vocab-report-profile p,
#viewClassroom .class-vocab-report-cover p,
#viewClassroom .class-vocab-report-section p {
  margin: 8px 0 0;
  color: #64748b;
  font-size: 13px;
  line-height: 1.65;
}

#viewClassroom .class-vocab-report-section::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 28px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #93c5fd;
}

#viewClassroom .class-vocab-report-levels::before { background: #fde68a; }
#viewClassroom .class-vocab-report-ability::before { background: #f0abfc; }
#viewClassroom .class-vocab-report-test::before { background: #6ee7b7; }
#viewClassroom .class-vocab-report-advice::before { background: #c084fc; }

#viewClassroom .class-vocab-report-score-card {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  margin-top: 14px;
  padding: 16px;
  border-radius: 14px;
  background: #ecffd8;
}

#viewClassroom .class-vocab-report-score-badge {
  width: 88px;
  height: 88px;
  background: #63c500;
}

#viewClassroom .class-vocab-report-score-badge strong {
  font-family: 'Outfit', sans-serif;
  font-size: 26px;
  line-height: 1;
}

#viewClassroom .class-vocab-report-score-badge span {
  margin-top: 6px;
  font-size: 12px;
}

#viewClassroom .class-vocab-report-score-card h6 {
  margin: 0;
  color: #0f172a;
  font-size: 19px;
  font-weight: 950;
}

#viewClassroom .class-vocab-report-metric-grid,
#viewClassroom .class-vocab-report-type-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

#viewClassroom .class-vocab-report-metric-grid div,
#viewClassroom .class-vocab-report-type-card {
  padding: 10px 8px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #f8fafc;
  text-align: center;
}

#viewClassroom .class-vocab-report-metric-grid span,
#viewClassroom .class-vocab-report-type-card span {
  display: block;
  color: #64748b;
  font-size: 11px;
  font-weight: 800;
}

#viewClassroom .class-vocab-report-metric-grid strong,
#viewClassroom .class-vocab-report-type-card strong {
  display: block;
  margin-top: 4px;
  color: #111827;
  font-size: 18px;
  font-weight: 950;
}

#viewClassroom .class-vocab-report-level-chart {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  align-items: end;
  min-height: 190px;
  margin-top: 18px;
  padding: 12px 4px 0;
  border-top: 1px solid #eef2ff;
}

#viewClassroom .class-vocab-report-level-bar {
  display: grid;
  gap: 8px;
  justify-items: center;
  align-items: end;
}

#viewClassroom .class-vocab-report-level-visual {
  width: 38px;
  min-height: 16px;
  border-radius: 10px 10px 4px 4px;
  background: #ddd6fe;
  position: relative;
  overflow: visible;
}

#viewClassroom .class-vocab-report-level-bar.current .class-vocab-report-level-visual {
  background: #8b5cf6;
}

#viewClassroom .class-vocab-report-level-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

#viewClassroom .class-vocab-report-level-marker {
  position: absolute;
  left: 50%;
  bottom: 100%;
  transform: translateX(-50%);
  margin-bottom: 4px;
  padding: 2px 7px;
  border-radius: 999px;
  background: #7c3aed;
  color: #ffffff;
  font-size: 11px;
  font-weight: 900;
  white-space: nowrap;
}

#viewClassroom .class-vocab-report-level-label {
  color: #334155;
  font-size: 12px;
  font-weight: 900;
  text-align: center;
}

#viewClassroom .class-vocab-report-level-range {
  color: #94a3b8;
  font-size: 10px;
  text-align: center;
  white-space: nowrap;
}

#viewClassroom .class-vocab-report-progress-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

#viewClassroom .class-vocab-report-progress-step {
  min-width: 0;
  padding: 12px;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  background: #f8fafc;
}

#viewClassroom .class-vocab-report-progress-step span,
#viewClassroom .class-vocab-report-progress-step strong {
  display: block;
}

#viewClassroom .class-vocab-report-progress-step span {
  color: #64748b;
  font-size: 12px;
  font-weight: 850;
}

#viewClassroom .class-vocab-report-progress-step strong {
  margin-top: 4px;
  color: #111827;
  font-size: 20px;
  font-weight: 950;
}

#viewClassroom .class-vocab-report-progress-track {
  height: 8px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #ede9fe;
}

#viewClassroom .class-vocab-report-progress-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #8b5cf6, #22c55e);
}

@media (max-width: 900px) {
  #viewClassroom .class-vocab-report-printable {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-vocab-report-progress-flow {
    grid-template-columns: 1fr;
  }
}

@media print {
  @page {
    size: A4;
    margin: 12mm;
  }

  html,
  body {
    width: auto !important;
    min-height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #ffffff !important;
    overflow: visible !important;
  }

  body.class-vocab-report-print-mode,
  body.class-vocab-report-print-mode #coachApp,
  body.class-vocab-report-print-mode #dashboardScreen,
  body.class-vocab-report-print-mode .workspace,
  body.class-vocab-report-print-mode .content-wrapper,
  body.class-vocab-report-print-mode .main-layout-container,
  body.class-vocab-report-print-mode .view-panel,
  body.class-vocab-report-print-mode #viewClassroom,
  body.class-vocab-report-print-mode #classroomActivePanel,
  body.class-vocab-report-print-mode .classroom-grid,
  body.class-vocab-report-print-mode .word-interactive-stage,
  body.class-vocab-report-print-mode #classViewVocabTest,
  body.class-vocab-report-print-mode #classVocabResultCard {
    display: block !important;
    position: static !important;
    width: auto !important;
    max-width: none !important;
    height: auto !important;
    max-height: none !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
  }

  body.class-vocab-report-print-mode #loginScreen,
  body.class-vocab-report-print-mode #dashboardScreen .sidebar,
  body.class-vocab-report-print-mode #dashboardScreen .header,
  body.class-vocab-report-print-mode .view-panel:not(#viewClassroom),
  body.class-vocab-report-print-mode #classroomSetupCard,
  body.class-vocab-report-print-mode #classroomActivePanel > .class-info-bar,
  body.class-vocab-report-print-mode .word-interactive-stage > :not(#classViewVocabTest),
  body.class-vocab-report-print-mode #classViewVocabTest > :not(#classVocabResultCard),
  body.class-vocab-report-print-mode #classVocabResultCard > .class-vocab-report-header,
  body.class-vocab-report-print-mode .coach-toast {
    display: none !important;
  }

  body.class-vocab-report-print-mode #classVocabReportPrintable {
    position: static !important;
    left: auto !important;
    top: auto !important;
    width: 100% !important;
    max-width: none !important;
    height: auto !important;
    max-height: none !important;
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
    grid-template-columns: 1fr !important;
    gap: 10mm !important;
    background: #ffffff !important;
  }

  body.class-vocab-report-print-mode .class-vocab-report-profile,
  body.class-vocab-report-print-mode .class-vocab-report-cover,
  body.class-vocab-report-print-mode .class-vocab-report-section {
    display: block !important;
    width: auto !important;
    margin: 0 0 10mm 0 !important;
    padding: 8mm !important;
    break-inside: avoid;
    page-break-inside: avoid;
    box-shadow: none !important;
    border: 1px solid #e5e7eb !important;
    background: #ffffff !important;
  }

  body.class-vocab-report-print-mode .class-vocab-report-profile,
  body.class-vocab-report-print-mode .class-vocab-report-cover {
    background: #f8f7ff !important;
  }

  body.class-vocab-report-print-mode .class-vocab-report-section::before {
    display: none !important;
  }

  body.class-vocab-report-print-mode .class-vocab-report-score-card {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  body.class-vocab-report-print-mode .class-vocab-report-level-chart,
  body.class-vocab-report-print-mode .class-vocab-report-type-grid,
  body.class-vocab-report-print-mode .class-vocab-report-metric-grid {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}

#viewClassroom .class-vocab-shared-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  color: #0b6ea8;
  font-size: 16px;
  font-weight: 950;
}

#viewClassroom .class-vocab-shared-meta .correct {
  color: #16a34a;
}

#viewClassroom .class-vocab-shared-meta .wrong {
  color: #dc2626;
}

#viewClassroom .class-vocab-shared-card {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-top: 16px;
  padding: 36px 24px;
  border: 1px solid #e0e7ff;
  border-radius: 34px;
  background:
    radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.08), transparent 42%),
    #ffffff;
  box-shadow: 0 24px 64px rgba(99, 102, 241, 0.1);
}

#viewClassroom .class-vocab-timer-ring {
  --progress: 1;
  width: 112px;
  height: 112px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background:
    conic-gradient(#8b5cf6 calc(var(--progress) * 360deg), #e5e7eb 0deg);
}

#viewClassroom .class-vocab-timer-ring.expired {
  background:
    conic-gradient(#ef4444 calc(var(--progress) * 360deg), #fee2e2 0deg);
}

#viewClassroom .class-vocab-timer-ring span {
  width: 86px;
  height: 86px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #ffffff;
  color: #5b21b6;
  font-size: 26px;
  font-weight: 950;
  font-family: 'Outfit', sans-serif;
}

#viewClassroom .class-vocab-timer-ring.expired span {
  color: #dc2626;
}

#viewClassroom .class-vocab-shared-word {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

#viewClassroom .class-vocab-shared-main {
  color: #1f2937;
  font-family: 'Outfit', sans-serif;
  font-size: clamp(70px, 8vw, 130px);
  font-weight: 950;
  line-height: 1;
  letter-spacing: 0;
}

#viewClassroom .class-vocab-audio-btn {
  width: 70px;
  height: 70px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #ede9fe, #e0f2fe);
  color: #6d28d9;
  font-size: 28px;
  cursor: pointer;
  box-shadow: 0 14px 32px rgba(124, 58, 237, 0.16);
}

#viewClassroom .class-vocab-shared-phonetics,
#viewClassroom .class-vocab-shared-phonetic {
  color: #7c3aed;
  font-size: 30px;
  font-weight: 950;
}

#viewClassroom .class-vocab-shared-phonetics span {
  color: #cbd5e1;
  margin: 0 12px;
}

#viewClassroom .class-vocab-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

#viewClassroom .class-vocab-choice-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

#viewClassroom .class-vocab-choice-btn {
  min-height: 84px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
  border: 2px solid #e5e7eb;
  border-radius: 24px;
  background: #f3f0ff;
  color: #111827;
  font-size: 26px;
  font-weight: 950;
  text-align: left;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(99, 102, 241, 0.08);
}

#viewClassroom .class-vocab-choice-btn > span:first-child {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #8b5cf6;
  color: #ffffff;
  font-family: 'Outfit', sans-serif;
  font-size: 24px;
}

#viewClassroom .class-vocab-choice-btn.unknown {
  grid-column: 1 / -1;
  width: min(720px, 100%);
  justify-self: center;
  border-color: #fed7aa;
  background: #fff7ed;
  color: #9a3412;
}

#viewClassroom .class-vocab-choice-btn.unknown > span:first-child {
  background: #f97316;
}

#viewClassroom .class-vocab-choice-btn.selected.correct,
#viewClassroom .class-vocab-choice-btn.revealed-correct,
#viewClassroom .class-vocab-choice-btn.correct-tone.selected {
  border-color: #22c55e;
  background: #dcfce7;
  color: #166534;
}

#viewClassroom .class-vocab-choice-btn.selected.wrong,
#viewClassroom .class-vocab-choice-btn.wrong-tone.selected {
  border-color: #ef4444;
  background: #fee2e2;
  color: #991b1b;
}

#viewClassroom .class-vocab-choice-btn.correct-tone {
  background: #ecfdf5;
  border-color: #bbf7d0;
  color: #166534;
}

#viewClassroom .class-vocab-choice-btn.correct-tone > span:first-child {
  background: #22c55e;
}

#viewClassroom .class-vocab-choice-btn.wrong-tone {
  background: #fff1f2;
  border-color: #fecaca;
  color: #991b1b;
}

#viewClassroom .class-vocab-choice-btn.wrong-tone > span:first-child {
  background: #ef4444;
}

#viewClassroom .class-vocab-shared-hint,
#viewClassroom .class-vocab-spelling-prompt {
  margin: 14px 0 0;
  color: #64748b;
  font-size: 15px;
  font-weight: 800;
  text-align: center;
}

#viewClassroom .class-vocab-spelling-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

#viewClassroom .class-vocab-spelling-row input {
  flex: 1;
  padding: 18px 20px !important;
  border: 2px solid #ddd6fe !important;
  border-radius: 18px !important;
  font-size: 22px;
  font-weight: 900;
}

#viewClassroom .class-vocab-spelling-row button {
  min-width: 136px;
  border: 0;
  border-radius: 18px;
  background: #7c3aed;
  color: #ffffff;
  font-size: 20px;
  font-weight: 950;
  cursor: pointer;
}

@media (max-width: 980px) {
  #viewClassroom .classroom-grid {
    grid-template-columns: 1fr !important;
  }

  #viewClassroom .classroom-words-list {
    max-height: 260px !important;
  }

  #viewClassroom .class-teach-mark-panel {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-teach-actions {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-teach-usage-group > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #viewClassroom .class-teach-usage-group.part-of-speech > div,
  #viewClassroom .class-teach-pos-row > div {
    grid-template-columns: 1fr;
  }

  #viewClassroom .class-vocab-choice-grid {
    grid-template-columns: 1fr;
  }
}