/* ==========================================================================
   CurriculAI - Application Styles
   K-12 Homeschool Platform | Dark Theme
   ========================================================================== */

/* --- CSS Variables (Design System) --- */
:root {
  --bg-deep: #0a0e1a;
  --bg-card: #111827;
  --bg-surface: #1a2236;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --accent-warm: #f59e0b;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(148, 163, 184, 0.08);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.15);
  --success: #22c55e;
  --success-glow: rgba(34, 197, 94, 0.15);
  --purple: #a78bfa;
  --purple-glow: rgba(167, 139, 250, 0.15);
  --teal: #34d399;
  --sidebar-width: 260px;
  --topbar-height: 0px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #7dd3fc;
}

img {
  max-width: 100%;
  display: block;
}


/* ==========================================================================
   1. LOGIN / REGISTER PAGE
   ========================================================================== */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: linear-gradient(165deg, #0a0e1a 0%, #0f172a 40%, #1e1b3a 100%);
  position: relative;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: 20%;
  right: 15%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 3rem 2.5rem;
  width: 100%;
  max-width: 440px;
  position: relative;
  z-index: 1;
}

.auth-card .logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 0.5rem;
}

.auth-card .logo span {
  color: var(--accent);
}

.auth-card .auth-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.auth-card h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.oauth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition-base), background var(--transition-base);
  font-family: 'DM Sans', sans-serif;
}

.oauth-btn:hover {
  border-color: rgba(148, 163, 184, 0.2);
  background: #1f2b3f;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.role-selector {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.role-option {
  flex: 1;
  padding: 0.7rem 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: 'DM Sans', sans-serif;
}

.role-option:hover {
  border-color: rgba(148, 163, 184, 0.15);
}

.role-option.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.auth-footer a {
  font-weight: 500;
}


/* ==========================================================================
   2. APP LAYOUT - Sidebar + Main
   ========================================================================== */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: transform var(--transition-base);
}

.sidebar-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-header .logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
}

.sidebar-header .logo span {
  color: var(--accent);
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
}

.nav-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 1rem 0.75rem 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  margin-bottom: 2px;
}

.nav-item:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
}

.nav-item .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.sidebar-user-info {
  overflow: hidden;
}

.sidebar-user-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Main Content --- */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  padding: 2rem 2.5rem;
}

.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.page-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}


/* ==========================================================================
   3. DASHBOARD
   ========================================================================== */

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.stat-card:hover {
  border-color: rgba(56, 189, 248, 0.15);
  transform: translateY(-2px);
}

.stat-card-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.stat-card-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat-card-value.accent {
  color: var(--accent);
}

.stat-card-value.warm {
  color: var(--accent-warm);
}

.stat-card-change {
  font-size: 0.8rem;
  color: var(--success);
  font-weight: 500;
}

.stat-card-change.negative {
  color: var(--danger);
}

/* Recent items list */
.recent-list {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.recent-list-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.recent-list-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.recent-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-fast);
}

.recent-item:last-child {
  border-bottom: none;
}

.recent-item:hover {
  background: var(--bg-surface);
}

.recent-item-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.recent-item-title {
  font-weight: 500;
  font-size: 0.92rem;
}

.recent-item-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Quick actions */
.quick-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}


/* ==========================================================================
   4. FORMS & INPUTS
   ========================================================================== */

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.92rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.form-error {
  font-size: 0.78rem;
  color: var(--danger);
  margin-top: 0.3rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Checkboxes (for standards selector) */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.checkbox-label:hover {
  color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1px solid var(--text-muted);
  border-radius: 4px;
  background: var(--bg-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  position: relative;
}

.checkbox-label input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: solid var(--bg-deep);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-label input[type="checkbox"]:focus {
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Standards selector grid */
.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
  padding: 1rem 0;
}

.standard-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: border-color var(--transition-base);
}

.standard-item:hover {
  border-color: rgba(56, 189, 248, 0.2);
}

.standard-item.selected {
  border-color: var(--accent);
  background: var(--accent-glow);
}


/* ==========================================================================
   5. BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-deep);
}

.btn-primary:hover:not(:disabled) {
  background: #7dd3fc;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  border-color: rgba(148, 163, 184, 0.2);
  background: #1f2b3f;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
  box-shadow: 0 4px 20px var(--danger-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 0.9rem 2rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}


/* ==========================================================================
   6. CARDS (General)
   ========================================================================== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.card:hover {
  border-color: rgba(56, 189, 248, 0.12);
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
}

/* Card grid (for Classes, etc.) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.class-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color var(--transition-base), transform var(--transition-base);
  cursor: pointer;
}

.class-card:hover {
  border-color: rgba(56, 189, 248, 0.2);
  transform: translateY(-2px);
}

.class-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

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

.class-card-stats {
  display: flex;
  gap: 1.5rem;
}

.class-card-stat {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.class-card-stat strong {
  color: var(--text-primary);
  font-weight: 600;
}


/* ==========================================================================
   7. TABLES
   ========================================================================== */

.table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-toolbar {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.table-search {
  padding: 0.5rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  outline: none;
  min-width: 220px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.table-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 0.85rem 1.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 0.85rem 1.5rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tr:nth-child(even) {
  background: rgba(148, 163, 184, 0.02);
}

tr:hover {
  background: var(--bg-surface);
}

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

td.name-cell {
  color: var(--text-primary);
  font-weight: 500;
}


/* ==========================================================================
   8. BADGES & TAGS
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.badge-accent {
  background: var(--accent-glow);
  color: var(--accent);
}

.badge-warm {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-warm);
}

.badge-success {
  background: var(--success-glow);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-glow);
  color: var(--danger);
}

.badge-purple {
  background: var(--purple-glow);
  color: var(--purple);
}

.badge-muted {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-muted);
}

/* TEKS code tags */
.teks-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.teks-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Role badges */
.role-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.role-admin {
  background: var(--purple-glow);
  color: var(--purple);
}

.role-teacher {
  background: var(--accent-glow);
  color: var(--accent);
}

.role-parent {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-warm);
}


/* ==========================================================================
   9. LESSON GENERATOR
   ========================================================================== */

.generator-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.generator-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.generator-form h3 {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.generator-preview {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.generator-preview-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.generator-preview-empty .preview-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.4;
}


/* ==========================================================================
   10. LESSON VIEWER
   ========================================================================== */

.lesson-viewer {
  max-width: 860px;
  margin: 0 auto;
}

.lesson-header {
  margin-bottom: 2rem;
}

.lesson-header h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.lesson-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.lesson-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.lesson-section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.lesson-section-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.section-warmup .lesson-section-icon {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-warm);
}

.section-instruction .lesson-section-icon {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent);
}

.section-practice .lesson-section-icon {
  background: rgba(16, 185, 129, 0.1);
  color: var(--teal);
}

.section-assessment .lesson-section-icon {
  background: var(--purple-glow);
  color: var(--purple);
}

.lesson-section-title {
  font-size: 1rem;
  font-weight: 600;
}

.lesson-section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.lesson-content {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

.lesson-content p {
  margin-bottom: 0.75rem;
}

.lesson-content ul,
.lesson-content ol {
  margin: 0.5rem 0 0.75rem 1.5rem;
}

.lesson-content li {
  margin-bottom: 0.35rem;
}

.lesson-content strong {
  color: var(--text-primary);
}

.lesson-content h4 {
  color: var(--text-primary);
  font-size: 1rem;
  margin: 1.25rem 0 0.5rem;
}

/* TEKS alignment panel */
.teks-alignment {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.5rem;
}

.teks-alignment-header {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}


/* ==========================================================================
   11. SPED ACCOMMODATION CARDS
   ========================================================================== */

.accommodation-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.accommodation-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  border-left: 3px solid var(--accent-warm);
}

.accommodation-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.accommodation-card-type {
  font-size: 0.78rem;
  color: var(--accent-warm);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.accommodation-card-details {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}


/* ==========================================================================
   12. LOADING SPINNER
   ========================================================================== */

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

.spinner-lg {
  width: 36px;
  height: 36px;
  border-width: 3px;
}

.spinner-sm {
  width: 14px;
  height: 14px;
  border-width: 2px;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 26, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  z-index: 10;
}

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.btn .spinner {
  width: 16px;
  height: 16px;
  border-width: 2px;
  border-color: rgba(10, 14, 26, 0.3);
  border-top-color: var(--bg-deep);
}


/* ==========================================================================
   13. TOAST NOTIFICATIONS
   ========================================================================== */

.toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  min-width: 280px;
  max-width: 420px;
  pointer-events: auto;
  animation: toast-in 0.3s ease forwards;
}

.toast.toast-out {
  animation: toast-out 0.25s ease forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(30px);
  }
}

.toast-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  font-weight: 700;
}

.toast-success .toast-icon {
  background: var(--success-glow);
  color: var(--success);
}

.toast-error .toast-icon {
  background: var(--danger-glow);
  color: var(--danger);
}

.toast-message {
  font-size: 0.88rem;
  color: var(--text-primary);
  flex: 1;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0.25rem;
  line-height: 1;
  transition: color var(--transition-fast);
}

.toast-close:hover {
  color: var(--text-primary);
}


/* ==========================================================================
   14. EMPTY STATES
   ========================================================================== */

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.empty-state h3 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.empty-state p {
  font-size: 0.9rem;
  max-width: 360px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}


/* ==========================================================================
   15. MODAL / DIALOG
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: fade-in 0.2s ease;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  animation: modal-in 0.25s ease;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  padding: 1.5rem 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  font-size: 1.2rem;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 0 1.5rem 1.5rem;
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}


/* ==========================================================================
   16. UTILITY CLASSES
   ========================================================================== */

.text-accent { color: var(--accent); }
.text-warm { color: var(--accent-warm); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.flex-wrap { flex-wrap: wrap; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}


/* ==========================================================================
   17. RESPONSIVE - Mobile Sidebar Collapse
   ========================================================================== */

.sidebar-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 60;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.6);
  z-index: 40;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-toggle {
    display: flex;
  }

  .sidebar-overlay.visible {
    display: block;
  }

  .main-content {
    margin-left: 0;
    padding: 1.25rem;
    padding-top: 4rem;
  }

  .page-header h1 {
    font-size: 1.4rem;
  }

  .stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .generator-layout {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .table-wrapper {
    overflow-x: auto;
  }

  table {
    min-width: 600px;
  }

  .page-header-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .quick-actions {
    flex-direction: column;
  }

  .quick-actions .btn {
    width: 100%;
  }

  .lesson-section {
    padding: 1.25rem;
  }

  .auth-card {
    padding: 2rem 1.5rem;
  }

  .modal {
    margin: 1rem;
    max-height: 90vh;
  }

  .toast-container {
    top: auto;
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
  }

  .toast {
    min-width: auto;
    max-width: none;
  }

  .accommodation-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .stat-cards {
    grid-template-columns: 1fr;
  }

  .role-selector {
    flex-direction: column;
  }

  .standards-grid {
    grid-template-columns: 1fr;
  }
}