/* Teacher Dashboard & TV Exhibition Mode Styles */

.teacher-dashboard {
  max-width: 1180px;
  margin: 1.5rem auto 4rem;
}

/* Dashboard Top Stats Bar */
.teacher-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.teacher-title-area h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.teacher-class-select {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  background: #FFFFFF;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--text-primary);
  cursor: pointer;
}

.teacher-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.stat-card.blue::before { background: var(--color-blue); }
.stat-card.emerald::before { background: var(--color-emerald); }
.stat-card.amber::before { background: var(--color-amber); }
.stat-card.purple::before { background: var(--color-purple); }

.stat-card-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}

.stat-card-number {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.1;
}

.stat-card-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ============================================================
   Teacher Etiquette Proposal & 70% Sympathy Approval Card
============================================================ */
.teacher-proposal-panel {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2.5rem;
}

.proposal-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.proposal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.proposal-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-fast);
}

.proposal-card:hover {
  background: #FFFFFF;
  box-shadow: var(--shadow-xs);
  border-color: #94A3B8;
}

.proposal-vote-bar {
  width: 100%;
  height: 8px;
  background: #E2E8F0;
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0.75rem 0 0.5rem;
}

.proposal-vote-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

/* Management Table Card */
.table-container-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-light);
  flex-wrap: wrap;
  gap: 1rem;
}

.table-filter-pills {
  display: flex;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 0.25rem;
  border-radius: var(--radius-full);
}

.table-filter-btn {
  padding: 0.35rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.table-filter-btn.active {
  background: var(--brand-black);
  color: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.table-search-input {
  padding: 0.45rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  width: 220px;
  background: #FFFFFF;
}

.table-search-input:focus {
  outline: none;
  border-color: var(--brand-black);
}

.student-data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.student-data-table th {
  background: #F9FAFB;
  padding: 0.85rem 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-light);
}

.student-data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.student-data-table tr:hover {
  background: #F8FAFC;
}

.student-name-col {
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.student-num-badge {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid var(--border-light);
}

/* TV Exhibition Presentation View (Fullscreen Overlay) */
.exhibition-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: radial-gradient(circle at center, #1E1F2B 0%, #0F1015 100%);
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 3rem 4rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.exhibition-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.exhibition-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.exhibition-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.exhibition-badge {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.exhibition-btn-close {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.exhibition-stage {
  max-width: 920px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

.exhibition-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  padding: 3.5rem 3rem;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
  animation: slideFadeIn 0.5s ease;
}

@keyframes slideFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.exhibition-student-info {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.exhibition-quote {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 2.5rem;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}

.exhibition-metrics {
  display: flex;
  justify-content: center;
  gap: 3rem;
}

.ex-metric-val {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #60A5FA;
}

.ex-metric-lbl {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 600;
  margin-top: 0.25rem;
}

.exhibition-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

.exhibition-dots {
  display: flex;
  gap: 0.5rem;
}

.ex-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.ex-dot.active {
  background: #3B82F6;
  width: 24px;
  border-radius: 5px;
}

@media (max-width: 900px) {
  .teacher-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}