/* Modern Dark Glassmorphism Stylesheet for Teacher Dashboard */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  --panel-bg: rgba(30, 41, 59, 0.75);
  --panel-border: rgba(255, 255, 255, 0.1);
  --primary: #2dd4bf;
  --primary-hover: #14b8a6;
  --primary-glow: rgba(45, 212, 191, 0.25);
  --accent: #fbbf24;
  --accent-purple: #a855f7;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --card-bg: rgba(15, 23, 42, 0.6);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
header {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--panel-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-badge {
  background: linear-gradient(135deg, var(--primary), var(--accent-purple));
  color: #0f172a;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.logo-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.nav-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
  color: #0f172a;
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

/* Layout Main Container */
main {
  flex: 1;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Cards Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.stat-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
}

.stat-icon {
  font-size: 1.5rem;
}

.stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.progress-bar-bg {
  background: rgba(255, 255, 255, 0.1);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0%;
  transition: width 0.4s ease;
}

/* Sections & Headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
}

/* Class Grid */
.classes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.25rem;
}

.class-card {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.class-card:hover {
  transform: translateY(-3px);
  border-color: rgba(45, 212, 191, 0.4);
}

.class-card.completed {
  border-color: rgba(34, 197, 94, 0.5);
  background: rgba(20, 83, 45, 0.25);
}

.class-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.class-tag {
  background: rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  color: var(--accent);
  font-weight: 600;
}

.check-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.check-input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-green);
  cursor: pointer;
}

.class-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.class-card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.btn-action {
  background: rgba(45, 212, 191, 0.15);
  color: var(--primary);
  border: 1px solid rgba(45, 212, 191, 0.3);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  width: 100%;
  text-align: center;
  transition: all 0.2s ease;
}

.btn-action:hover {
  background: var(--primary);
  color: #0f172a;
}

/* Detail Modal / Lesson Plan Viewer */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  z-index: 200;
  display: none;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-container {
  background: #1e293b;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  max-width: 850px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  padding: 1.5rem;
  box-shadow: var(--glass-shadow);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.4);
  color: #fff;
}

.modal-header {
  margin-bottom: 1.25rem;
}

/* Activity Card & Structured Steps UI */
.activity-card {
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.activity-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.time-badge {
  background: rgba(45, 212, 191, 0.15);
  color: var(--primary);
  border: 1px solid rgba(45, 212, 191, 0.3);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
}

.duration-tag {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
}

.activity-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 0.5rem;
}

/* Sense Pills Container */
.sense-pills-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}

.sense-pill {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
}

.sense-pill.visual { background: rgba(56, 189, 248, 0.18); color: #7dd3fc; border-color: rgba(56, 189, 248, 0.3); }
.sense-pill.auditory { background: rgba(168, 85, 247, 0.18); color: #c084fc; border-color: rgba(168, 85, 247, 0.3); }
.sense-pill.tactile { background: rgba(34, 197, 94, 0.18); color: #86efac; border-color: rgba(34, 197, 94, 0.3); }
.sense-pill.oral { background: rgba(251, 191, 36, 0.18); color: #fde047; border-color: rgba(251, 191, 36, 0.3); }

/* Roles Grid (Teacher vs Student) */
.roles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

@media (max-width: 640px) {
  .roles-grid {
    grid-template-columns: 1fr;
  }
}

.role-box {
  padding: 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.45;
}

.role-box.teacher {
  background: rgba(45, 212, 191, 0.08);
  border-left: 3px solid var(--primary);
}

.role-box.student {
  background: rgba(168, 85, 247, 0.08);
  border-left: 3px solid var(--accent-purple);
}

.role-header {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.role-box.teacher .role-header { color: var(--primary); }
.role-box.student .role-header { color: var(--accent-purple); }

/* Timeline Steps */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  font-size: 0.88rem;
  color: #e2e8f0;
}

.step-num {
  background: var(--primary);
  color: #0f172a;
  font-size: 0.75rem;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* Word Tracker Table */
.word-search-bar {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.word-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.word-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.word-card.learned {
  border-color: rgba(34, 197, 94, 0.4);
  background: rgba(20, 83, 45, 0.3);
}

.word-text {
  font-weight: 700;
  font-size: 0.95rem;
}

.word-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.badge-learned {
  background: rgba(34, 197, 94, 0.2);
  color: #4ade80;
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-weight: 700;
}

/* Toolkit Tools */
.tool-box {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.timer-display {
  font-family: 'Outfit', sans-serif;
  font-size: 3.5rem;
  font-weight: 800;
  text-align: center;
  color: var(--accent);
  margin: 1rem 0;
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--primary);
  color: #0f172a;
  border: none;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: pointer;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  border: 1px solid var(--panel-border);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: pointer;
}

.tpr-card {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(45, 212, 191, 0.2));
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1rem;
}

.tpr-command {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  margin: 0.75rem 0;
}

/* Responsiveness */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  .stat-value {
    font-size: 1.75rem;
  }
  .timer-display {
    font-size: 2.5rem;
  }
}