/* ========== USER TYPE SELECTION ========== */
.user-type-container {
  min-height: calc(100dvh - var(--header-height, 96px));
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-page-bg);
  padding: 20px;
}

.user-type-box {
  background: var(--color-surface);
  border-radius: 16px;
  padding: 40px;
  max-width: 600px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.5s ease;
}

.user-type-header {
  text-align: center;
  margin-bottom: 40px;
}

.user-type-title {
  font-family: 'Cinzel', serif;
  font-size: 32px;
  margin-bottom: 10px;
  color: var(--color-text);
}

.user-type-subtitle {
  color: var(--color-text-secondary);
  font-size: 14px;
}

.user-type-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.user-type-card {
  background: var(--color-background-alt);
  border: 2px solid var(--color-input-border);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.user-type-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px rgba(124, 115, 255, 0.2);
  transform: translateY(-5px);
}

.user-type-icon {
  font-size: 48px;
  color: var(--color-primary);
}

.user-type-name {
  font-weight: 600;
  color: var(--color-text);
}

.user-type-desc {
  font-size: 12px;
  color: var(--color-text-light);
}

/* ========== DASHBOARD ========== */
.dashboard-container {
  padding: 40px 20px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.welcome-card {
  background: var(--color-surface);
  border-radius: 12px;
  padding: 30px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.welcome-card h1 {
  color: var(--color-primary);
  margin-bottom: 10px;
}

/* Teacher Dashboard */
#app.teacher-dashboard-view {
  position: relative;
  isolation: isolate;
  min-height: calc(100dvh - var(--header-height, 96px));
}

.teacher-dashboard-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0.55;
  pointer-events: none;
}

.teacher-dashboard-backdrop::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(124, 115, 255, 0.18) 0%,
    var(--color-page-bg) 45%,
    var(--color-page-bg) 100%
  );
  opacity: 0.92;
}

#app.teacher-dashboard-view > *:not(.teacher-dashboard-backdrop) {
  position: relative;
  z-index: 1;
}

.teacher-dashboard-page {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  width: 100%;
  min-height: calc(100dvh - var(--header-height, 96px));
}

.teacher-dashboard {
  flex: 1 1 auto;
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 32px;
  width: 100%;
}

/* App footer bar */
.app-footer-bar {
  flex-shrink: 0;
  margin-top: auto;
  padding: 20px 20px 28px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 -8px 32px rgba(15, 23, 42, 0.06);
}

.app-footer-bar__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}

.app-footer-bar__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.app-footer-bar__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.app-footer-bar__link:hover {
  color: var(--color-primary);
}

.app-footer-bar__sep {
  color: var(--color-text-light);
  font-size: 0.88rem;
  user-select: none;
}

.app-footer-bar__social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.app-footer-bar__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-background-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.app-footer-bar__social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.app-footer-bar__copyright {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-text-light);
}

html[data-theme="dark"] .app-footer-bar {
  background: rgba(17, 24, 39, 0.9);
  border-top-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.28);
}

html[data-theme="dark"] .app-footer-bar__social-link {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .app-footer-bar {
    background: rgba(17, 24, 39, 0.9);
    border-top-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.28);
  }

  :root:not([data-theme="light"]) .app-footer-bar__social-link {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
  }
}

@media (max-width: 768px) {
  .app-footer-bar {
    padding: 18px 16px 24px;
  }

  .app-footer-bar__inner {
    gap: 12px;
  }
}

/* Hero */
.td-hero {
  margin-bottom: 24px;
  padding: 28px 32px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.1);
}

.td-hero__eyebrow {
  margin: 0 0 6px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.td-hero__title {
  margin: 0 0 8px;
  font-family: 'Cinzel', serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.15;
  color: var(--color-text);
}

.td-hero__subtitle {
  margin: 0 0 14px;
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 36rem;
}

.td-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(124, 115, 255, 0.12);
  color: var(--color-primary);
  border: 1px solid rgba(124, 115, 255, 0.22);
}

.td-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border: none;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.td-btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  box-shadow: 0 8px 24px rgba(124, 115, 255, 0.35);
}

.td-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(124, 115, 255, 0.45);
}

.td-btn--primary:active {
  transform: translateY(0);
}

/* Quick tools dock */
.td-dock {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
  padding: 10px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
}

.td-dock__item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 160px;
  min-width: 0;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.td-dock__item:hover {
  border-color: var(--color-primary);
  background: rgba(124, 115, 255, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 115, 255, 0.12);
}

.td-dock__item:active {
  transform: translateY(0);
}

.td-dock__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(124, 115, 255, 0.12);
  color: var(--color-primary);
  font-size: 1rem;
  flex-shrink: 0;
  transition: background 0.2s ease, color 0.2s ease;
}

.td-dock__item:hover .td-dock__icon {
  background: var(--color-primary);
  color: white;
}

.td-dock__item--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-color: transparent;
  color: white;
  box-shadow: 0 6px 20px rgba(124, 115, 255, 0.3);
}

.td-dock__item--primary .td-dock__icon {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.td-dock__item--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  border-color: transparent;
  color: white;
  box-shadow: 0 8px 28px rgba(124, 115, 255, 0.4);
}

.td-dock__item--primary:hover .td-dock__icon {
  background: rgba(255, 255, 255, 0.28);
  color: white;
}

.td-dock__label {
  text-align: left;
}

/* Section */
.td-section-title {
  margin: 0 0 20px;
  font-family: 'Cinzel', serif;
  font-size: 1.35rem;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

/* Empty state */
.td-empty {
  text-align: center;
  padding: 32px 20px;
  margin-bottom: 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px dashed rgba(124, 115, 255, 0.35);
}

.td-empty__icon {
  font-size: 2.5rem;
  color: var(--color-primary);
  opacity: 0.7;
  margin-bottom: 12px;
}

.td-empty__text {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

/* Classroom grid */
.td-classrooms__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.td-classroom-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.45s ease, transform 0.45s ease;
  transition-delay: var(--stagger, 0ms);
}

.td-classroom-card[data-animate-card]:not(.td-animate-in) {
  opacity: 0;
  transform: translateY(16px);
}

.td-classroom-card.td-animate-in {
  opacity: 1;
  transform: translateY(0);
}

.td-classroom-card__glow {
  position: absolute;
  inset: -1px;
  border-radius: 17px;
  background: linear-gradient(
    135deg,
    hsl(var(--card-hue, 262) 72% 62%) 0%,
    hsl(calc(var(--card-hue, 262) + 30) 65% 55%) 100%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.td-classroom-card:hover .td-classroom-card__glow {
  opacity: 1;
}

.td-classroom-card__body {
  position: relative;
  z-index: 1;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.td-classroom-card:hover .td-classroom-card__body {
  border-color: transparent;
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.td-classroom-card__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  padding: 18px 20px 12px;
  border-bottom: 1px solid var(--color-border);
}

.td-classroom-card__drag-handle {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-muted, var(--color-text-secondary));
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.td-classroom-card__drag-handle:hover,
.td-classroom-card__drag-handle:focus-visible {
  color: var(--color-text);
  background: var(--color-surface-hover, rgba(0, 0, 0, 0.06));
  outline: none;
}

.td-classroom-card__drag-handle:active {
  cursor: grabbing;
}

.td-classrooms__grid--reordering {
  user-select: none;
  -webkit-user-select: none;
  cursor: grabbing;
}

.td-classrooms__grid--reordering .td-classroom-card:not(.td-classroom-card--dragging) {
  transition: transform 0.18s ease;
}

body.td-classroom-dragging {
  cursor: grabbing;
  user-select: none;
  -webkit-user-select: none;
}

body.td-classroom-dragging * {
  cursor: grabbing !important;
}

.td-classroom-card-placeholder {
  border-radius: 16px;
  border: 2px dashed hsl(var(--card-hue, 262) 55% 58%);
  background:
    linear-gradient(
      135deg,
      hsla(var(--card-hue, 262), 72%, 62%, 0.12) 0%,
      hsla(calc(var(--card-hue, 262) + 30), 65%, 55%, 0.08) 100%
    );
  box-sizing: border-box;
  min-height: 160px;
  pointer-events: none;
}

.td-classroom-card--dragging {
  opacity: 1;
  z-index: 1200;
  box-shadow:
    0 18px 40px rgba(15, 23, 42, 0.22),
    0 0 0 1px hsla(var(--card-hue, 262), 55%, 55%, 0.35);
  transform: scale(1.04) rotate(1.25deg);
  transition: none;
  cursor: grabbing;
  will-change: left, top;
}

.td-classroom-card--dragging .td-classroom-card__glow {
  opacity: 1;
}

.td-classroom-card--dragging .td-classroom-card__body {
  border-color: hsla(var(--card-hue, 262), 55%, 55%, 0.45);
}

.td-classroom-card__locked-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #b45309;
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.td-classroom-card--locked .td-classroom-card__body {
  border-color: rgba(245, 158, 11, 0.35);
}

.td-classroom-card__main {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
  padding: 16px 20px 18px;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease;
  outline: none;
}

.td-classroom-card__main:hover {
  background: rgba(124, 115, 255, 0.03);
}

.td-classroom-card__main:focus-visible {
  background: rgba(124, 115, 255, 0.05);
  box-shadow: inset 0 0 0 2px rgba(124, 115, 255, 0.35);
}

.td-classroom-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.td-classroom-card__name {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  font-family: 'Audiowide', sans-serif;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--color-text);
  word-break: break-word;
}

.td-classroom-card__code-wrap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  min-height: 32px;
}

.td-classroom-card__copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: hsl(var(--card-hue, 262) 55% 48%);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.td-classroom-card__copy:hover {
  background: rgba(124, 115, 255, 0.12);
  border-color: rgba(124, 115, 255, 0.25);
  color: var(--color-primary);
  transform: scale(1.05);
}

.td-classroom-card__code {
  flex-shrink: 0;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  background: hsl(var(--card-hue, 262) 70% 95%);
  color: hsl(var(--card-hue, 262) 55% 42%);
}

.td-classroom-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.td-classroom-card__stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-background-alt);
}

.td-classroom-card__stat i {
  color: hsl(var(--card-hue, 262) 55% 50%);
  font-size: 0.78rem;
}

.td-classroom-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  font-size: 0.9rem;
  font-weight: 700;
  color: hsl(var(--card-hue, 262) 55% 48%);
  transition: gap 0.2s ease;
}

.td-classroom-card:hover .td-classroom-card__cta {
  gap: 12px;
}

.td-classroom-card__cta i {
  transition: transform 0.2s ease;
}

.td-classroom-card:hover .td-classroom-card__cta i {
  transform: translateX(3px);
}

.td-classroom-card__toolbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0 16px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  border-top: 1px solid transparent;
  transition:
    max-height 0.28s ease,
    opacity 0.22s ease,
    padding 0.28s ease,
    border-color 0.22s ease;
}

.td-classroom-card:hover .td-classroom-card__toolbar,
.td-classroom-card:focus-within .td-classroom-card__toolbar {
  max-height: 72px;
  opacity: 1;
  padding: 12px 16px 14px;
  border-top-color: var(--color-border);
}

.td-classroom-card__tool {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
}

.td-classroom-card__tool--icon {
  min-height: 40px;
  padding: 0;
  font-size: 0.95rem;
  position: relative;
}

.td-classroom-card__tool--icon i {
  pointer-events: none;
}

.td-classroom-card__tool:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(124, 115, 255, 0.08);
}

.td-classroom-card__tool--danger:hover {
  border-color: var(--color-danger);
  color: var(--color-danger);
  background: rgba(239, 68, 68, 0.08);
}

.td-classroom-card__tool--active {
  color: #b45309;
  border-color: rgba(245, 158, 11, 0.45);
  background: rgba(245, 158, 11, 0.12);
}

.td-classroom-card__tool--active:hover {
  color: #92400e;
  border-color: rgba(245, 158, 11, 0.55);
  background: rgba(245, 158, 11, 0.18);
}

.td-rich-tooltip {
  position: fixed;
  z-index: calc(var(--z-tooltip, 1070) + 6);
  width: min(280px, calc(100vw - 24px));
  padding: 11px 13px;
  background: linear-gradient(145deg, #1e1b4b 0%, #312e81 100%);
  color: #f8fafc;
  border-radius: 12px;
  border: 1px solid rgba(167, 139, 250, 0.35);
  box-shadow:
    0 12px 32px rgba(15, 23, 42, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px) scale(0.98);
  transition: opacity 0.08s ease, transform 0.08s ease;
}

.td-rich-tooltip::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -6px;
  transform: translateX(-50%);
  border-width: 6px 6px 0 6px;
  border-style: solid;
  border-color: #312e81 transparent transparent transparent;
}

.td-rich-tooltip--below::after {
  bottom: auto;
  top: -6px;
  border-width: 0 6px 6px 6px;
  border-color: transparent transparent #312e81 transparent;
}

.td-rich-tooltip--visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.td-rich-tooltip__title {
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1.3;
  color: #fde68a;
  margin-bottom: 4px;
}

.td-rich-tooltip__body {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.45;
  color: #e2e8f0;
}

.td-rich-tooltip__body[hidden] {
  display: none;
}

/* Dark mode */
html[data-theme="dark"] .td-hero,
html[data-theme="dark"] .td-dock {
  background: rgba(17, 24, 39, 0.85);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

html[data-theme="dark"] .td-dock__item {
  background: rgba(31, 41, 55, 0.9);
  border-color: rgba(255, 255, 255, 0.08);
}

html[data-theme="dark"] .td-empty {
  background: rgba(17, 24, 39, 0.6);
}

html[data-theme="dark"] .td-classroom-card__body {
  background: rgba(17, 24, 39, 0.92);
  border-color: rgba(255, 255, 255, 0.1);
}

html[data-theme="dark"] .td-classroom-card__header {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

html[data-theme="dark"] .td-classroom-card__main:hover {
  background: rgba(124, 115, 255, 0.08);
}

html[data-theme="dark"] .td-dock__item--primary {
  box-shadow: 0 6px 20px rgba(124, 115, 255, 0.25);
}

html[data-theme="dark"] .td-classroom-card__code {
  background: hsl(var(--card-hue, 262) 40% 18%);
  color: hsl(var(--card-hue, 262) 70% 78%);
}

html[data-theme="dark"] .td-classroom-card__stat {
  background: rgba(255, 255, 255, 0.06);
}

html[data-theme="dark"] .td-classroom-card__tool {
  background: rgba(31, 41, 55, 0.95);
  border-color: rgba(255, 255, 255, 0.08);
}

html[data-theme="dark"] .td-classroom-card__drag-handle:hover,
html[data-theme="dark"] .td-classroom-card__drag-handle:focus-visible {
  background: rgba(255, 255, 255, 0.08);
}

html[data-theme="dark"] .td-classroom-card:hover .td-classroom-card__toolbar,
html[data-theme="dark"] .td-classroom-card:focus-within .td-classroom-card__toolbar {
  border-top-color: rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .td-hero,
  :root:not([data-theme="light"]) .td-dock {
    background: rgba(17, 24, 39, 0.85);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  }

  :root:not([data-theme="light"]) .td-dock__item {
    background: rgba(31, 41, 55, 0.9);
    border-color: rgba(255, 255, 255, 0.08);
  }

  :root:not([data-theme="light"]) .td-empty {
    background: rgba(17, 24, 39, 0.6);
  }

  :root:not([data-theme="light"]) .td-classroom-card__body {
    background: rgba(17, 24, 39, 0.92);
    border-color: rgba(255, 255, 255, 0.1);
  }

  :root:not([data-theme="light"]) .td-classroom-card__main:hover {
    background: rgba(124, 115, 255, 0.08);
  }

  :root:not([data-theme="light"]) .td-classroom-card__code {
    background: hsl(var(--card-hue, 262) 40% 18%);
    color: hsl(var(--card-hue, 262) 70% 78%);
  }

  :root:not([data-theme="light"]) .td-classroom-card__stat {
    background: rgba(255, 255, 255, 0.06);
  }

  :root:not([data-theme="light"]) .td-classroom-card__tool {
    background: rgba(31, 41, 55, 0.95);
    border-color: rgba(255, 255, 255, 0.08);
  }

  :root:not([data-theme="light"]) .td-classroom-card:hover .td-classroom-card__toolbar,
  :root:not([data-theme="light"]) .td-classroom-card:focus-within .td-classroom-card__toolbar {
    border-top-color: rgba(255, 255, 255, 0.1);
  }
}

@media (max-width: 768px) {
  .td-hero {
    padding: 22px 20px;
  }

  .td-classroom-card__toolbar {
    max-height: none;
    opacity: 1;
    padding: 14px 16px 16px;
    border-top-color: var(--color-border);
  }

  .td-classroom-card__tool {
    font-size: 0.74rem;
    padding: 8px 6px;
  }

  .td-classrooms__grid {
    grid-template-columns: 1fr;
  }

  .user-type-options {
    grid-template-columns: 1fr;
  }
}

/* Legacy dashboard classes (settings, etc.) */
.dashboard-container {
  display: flex;
  gap: 30px;
  align-items: flex-start;
  margin-bottom: 30px;
}

.profile-preview {
  flex-shrink: 0;
  width: 150px;
  height: 150px;
  border-radius: 12px;
  overflow: hidden;
  border: 4px solid #7C73FF;
  box-shadow: 0 8px 24px rgba(124, 115, 255, 0.2);
}

.profile-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.profile-carousel {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 15px;
  align-items: center;
  background: var(--color-background-alt);
  padding: 15px;
  border-radius: 12px;
  overflow: hidden;
}

.carousel-btn {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border: none;
  background: #7C73FF;
  color: white;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  font-size: 16px;
}

.carousel-btn:hover {
  background: #6B62E8;
  transform: scale(1.1);
}

.carousel-btn:active {
  transform: scale(0.95);
}

.profile-carousel-grid {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 5px 0;
}

.profile-carousel-grid::-webkit-scrollbar {
  height: 6px;
}

.profile-carousel-grid::-webkit-scrollbar-track {
  background: #e0e0e0;
  border-radius: 3px;
}

.profile-carousel-grid::-webkit-scrollbar-thumb {
  background: #7C73FF;
  border-radius: 3px;
}

.carousel-item {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  border: 3px solid #e0e0e0;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.carousel-item:hover {
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.carousel-item.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(124, 115, 255, 0.3);
}

.carousel-item.active::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(124, 115, 255, 0.9);
  color: white;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

@media (max-width: 768px) {
  .profile-selector-container {
    flex-direction: column;
    gap: 20px;
  }
  
  .profile-preview {
    width: 120px;
    height: 120px;
    margin: 0 auto;
  }
  
  .carousel-item {
    width: 70px;
    height: 70px;
  }
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0 14px;
  color: var(--color-text-muted, #64748b);
  font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(124, 115, 255, 0.2);
}

.google-signin-mount {
  display: flex;
  justify-content: center;
  min-height: 44px;
  min-width: 280px;
  width: 100%;
}

.google-signin-mount--blocked {
  opacity: 0.45;
  pointer-events: none;
  filter: grayscale(0.35);
}

.google-register-codes-hint {
  margin: 0 0 12px;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--color-text-secondary);
  text-align: center;
}

.register-student-codes__lead {
  margin: 0 0 16px;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
  text-align: center;
}

.auth-divider--compact {
  margin: 8px 0 20px;
}

.google-signin-unavailable {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--color-text-secondary);
  text-align: center;
}

.google-native-bridge-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  max-width: 400px;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid rgba(60, 64, 67, 0.35);
  border-radius: 4px;
  background: #fff;
  color: #3c4043;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.google-native-bridge-btn:hover {
  background: #f8f9fa;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.google-native-bridge-btn:focus-visible {
  outline: 2px solid #4285f4;
  outline-offset: 2px;
}

.google-native-bridge-btn__icon {
  display: inline-flex;
  flex-shrink: 0;
}

.mkt-nav--app-shell .mkt-nav__links,
.mkt-nav--app-shell .mkt-nav__toggle,
.mkt-nav--app-shell .mkt-nav__social {
  display: none;
}

.mkt-site--app-shell .mkt-nav--app-shell .mkt-nav__inner {
  justify-content: space-between;
}

.gc-import-panel {
  margin: 0 0 16px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid rgba(124, 115, 255, 0.2);
  background: rgba(124, 115, 255, 0.05);
}

.gc-import-status {
  margin-bottom: 10px;
  font-size: 0.92rem;
  color: var(--color-text-muted, #64748b);
}

.gc-import-flow .btn,
.gc-import-actions .btn {
  margin-top: 10px;
}

.google-link-modal {
  width: min(420px, calc(100vw - 32px));
}

.analytics-teacher-impersonation-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: linear-gradient(90deg, #0f766e 0%, #0d9488 100%);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  z-index: 40;
  position: relative;
}

.analytics-teacher-impersonation-banner__content {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1;
}

.analytics-teacher-impersonation-banner__content i {
  flex-shrink: 0;
}

.analytics-teacher-impersonation-exit {
  flex-shrink: 0;
  white-space: nowrap;
}