/* ----------------------------------------------------
   Hemanth's Personal Command Center (2026–2028)
   Theme: Premium Sapphire Blue & Indigo (Light & Dark Modes)
   Design: Ultra-clean, Multi-tier Task Planner, Anti-Glare
   ---------------------------------------------------- */

/* --- Dark Theme Variables (Default - Deep Sapphire Blue & Indigo) --- */
body.dark-theme {
  --bg-canvas: #090d16;
  --bg-surface: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --bg-elevated: #334155;

  --border-subtle: #1e293b;
  --border-strong: #334155;
  --border-focus: #38bdf8;

  --text-primary: #f1f5f9;     /* Soft slate-100 (Warm & Anti-Glare) */
  --text-secondary: #94a3b8;   /* Soft slate-400 */
  --text-tertiary: #64748b;    /* Muted slate-500 */

  --accent-cyan: #38bdf8;      /* Sky / Cyan blue */
  --accent-indigo: #818cf8;    /* Indigo blue */
  --accent-blue: #60a5fa;      /* Vibrant blue */
  --accent-emerald: #34d399;   /* Emerald green */
  --accent-amber: #fbbf24;     /* Warm amber */
  --accent-rose: #f87171;      /* Soft rose */

  --btn-primary-bg: #38bdf8;
  --btn-primary-text: #0f172a;
  --btn-primary-hover: #7dd3fc;

  --badge-bg: rgba(56, 189, 248, 0.15);
  --badge-text: #38bdf8;
  --badge-border: rgba(56, 189, 248, 0.3);

  --shadow-main: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 8px 30px rgba(15, 23, 42, 0.7);
  --glow-accent: 0 0 15px rgba(56, 189, 248, 0.2);
}

/* --- Light Theme Variables (Clean Sapphire Light) --- */
body.light-theme {
  --bg-canvas: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --bg-elevated: #e2e8f0;

  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-focus: #0284c7;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;

  --accent-cyan: #0284c7;
  --accent-indigo: #4f46e5;
  --accent-blue: #2563eb;
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-rose: #dc2626;

  --btn-primary-bg: #0284c7;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #0369a1;

  --badge-bg: rgba(2, 132, 199, 0.1);
  --badge-text: #0284c7;
  --badge-border: rgba(2, 132, 199, 0.25);

  --shadow-main: 0 2px 12px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.08);
  --glow-accent: 0 0 12px rgba(2, 132, 199, 0.15);
}

:root {
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-med: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Glassmorphism & Card Utility */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-main);
  transition: var(--transition-med);
}

.glass-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}

/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: 0 2px 10px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
  background: var(--btn-primary-hover);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background: var(--bg-hover);
  border-color: var(--border-focus);
}

.glow-btn {
  border: 1px solid var(--accent-cyan);
  box-shadow: var(--glow-accent);
}

.btn-mini {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.btn-danger {
  background: rgba(248, 113, 113, 0.15);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--accent-rose);
}

.btn-danger:hover {
  background: var(--accent-rose);
  color: #ffffff;
}

/* Navigation Header */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: var(--transition-med);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 1.1rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.sub-badge {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.live-clock-card {
  text-align: center;
  background: var(--bg-canvas);
  padding: 5px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.clock-time {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.clock-date {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Dashboard Outer Layout */
.dashboard-container {
  display: flex;
  min-height: calc(100vh - 69px);
}

/* Sidebar Navigation */
.sidebar {
  width: 270px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-med);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-close-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.user-card {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo));
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.user-info h3 {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-primary);
}

.user-info p {
  font-size: 0.73rem;
  color: var(--text-secondary);
}

.status-online {
  font-size: 0.7rem;
  color: var(--accent-emerald);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.side-menu {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  border: none;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}

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

.nav-item.active {
  background: linear-gradient(90deg, rgba(56, 189, 248, 0.15), rgba(129, 140, 248, 0.1));
  color: var(--accent-cyan);
  border-left: 3px solid var(--accent-cyan);
  font-weight: 700;
}

.sidebar-footer .quote-box {
  background: var(--bg-canvas);
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.quote-box i {
  color: var(--accent-amber);
  margin-bottom: 6px;
}

/* Main Content Area */
.main-content {
  flex: 1;
  padding: 28px;
  max-width: 1350px;
  margin: 0 auto;
  width: 100%;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Banner */
.hero-banner {
  background: linear-gradient(135deg, var(--bg-surface), var(--bg-card));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-main);
  gap: 20px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.hero-content h2 {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.hero-content p {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.hero-stats {
  display: flex;
  gap: 16px;
}

.hero-stat-item {
  text-align: center;
  background: var(--bg-canvas);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  min-width: 100px;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent-cyan);
  display: block;
}

.stat-lbl {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.kpi-card {
  padding: 20px;
}

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.kpi-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: var(--badge-bg);
  color: var(--accent-cyan);
  border: 1px solid var(--badge-border);
}

.kpi-badge {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 700;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
}

.kpi-card h3 {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 600;
}

.big-metric {
  font-size: 1.7rem;
  font-weight: 800;
  font-family: var(--font-mono);
  margin-bottom: 10px;
  color: var(--text-primary);
}

.big-metric small {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.progress-bar-bg {
  height: 7px;
  background: var(--bg-canvas);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 12px;
  border: 1px solid var(--border-subtle);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-indigo), var(--accent-cyan));
  border-radius: 4px;
  transition: width 0.5s ease-in-out;
}

.kpi-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  color: var(--text-secondary);
}

.mini-btn-group {
  display: flex;
  gap: 6px;
}

.metric-counter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.counter-btn {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

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

.pill-tags {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.tag {
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  font-weight: 600;
}

/* 2-Column Grid Layout */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.card {
  padding: 20px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-header h3 {
  font-size: 1.05rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: underline;
}

.badge-tag {
  font-size: 0.72rem;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  padding: 3px 10px;
  border-radius: 12px;
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Today Timeline */
.timeline-today {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.time-slot-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.time-slot-card:hover {
  border-color: var(--border-strong);
}

.time-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-cyan);
  min-width: 95px;
}

.subject-info h4 {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-primary);
}

.subject-info p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Milestones List */
.milestone-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.milestone-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--bg-canvas);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.m-icon {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: var(--badge-bg);
  color: var(--accent-cyan);
  border: 1px solid var(--badge-border);
}

.m-details h4 {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-primary);
}

.m-details p {
  font-size: 0.73rem;
  color: var(--text-secondary);
}

.m-timer {
  text-align: right;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  padding: 5px 12px;
  border-radius: 6px;
}

.timer-number {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-amber);
  display: block;
}

.timer-label {
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* Section Header */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-header h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.section-header p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Filter Buttons */
.filter-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  overflow-x: auto;
  max-width: 100%;
}

.filter-btn {
  padding: 6px 12px;
  font-size: 0.78rem;
  font-weight: 700;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
}

.filter-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

/* Task Management System - 4 Tier Agenda */
.task-planner-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.task-view-switcher {
  display: flex;
  gap: 6px;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.task-view-btn {
  padding: 7px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.task-view-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

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

.task-item-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  gap: 16px;
  transition: var(--transition-fast);
}

.task-item-card:hover {
  border-color: var(--border-strong);
}

.task-item-card.completed {
  opacity: 0.65;
  text-decoration: line-through;
}

.task-left-section {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
}

.task-checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.task-details h4 {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.task-details p {
  font-size: 0.76rem;
  color: var(--text-secondary);
}

.task-badges-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}

.importance-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.task-actions-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Postpone Dropdown Menu */
.postpone-dropdown {
  position: relative;
  display: inline-block;
}

.postpone-menu {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  z-index: 50;
  min-width: 140px;
  padding: 6px 0;
}

.postpone-dropdown:hover .postpone-menu {
  display: block;
}

.postpone-item {
  display: block;
  width: 100%;
  padding: 6px 14px;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
}

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

/* Subject Syllabus Tracker Accordion */
.syllabus-subject-card {
  margin-bottom: 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
}

.syllabus-header {
  padding: 16px 20px;
  background: var(--bg-surface);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.syllabus-header h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.syllabus-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.unit-block h4 {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.unit-topics-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 8px;
}

/* Custom Table Responsive */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 700px;
}

.custom-table th, .custom-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.82rem;
}

.custom-table th {
  background: var(--bg-canvas);
  color: var(--text-secondary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.custom-table tr:hover td {
  background: var(--bg-hover);
}

.subject-cell {
  padding: 6px 10px;
  border-radius: 6px;
  font-weight: 700;
  display: block;
  background: var(--bg-canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}

.sub-lab {
  background: var(--badge-bg);
  color: var(--accent-cyan);
  border: 1px solid var(--badge-border);
}

/* Academic Calendar Event List */
.calendar-event-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calendar-event-list li {
  display: flex;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.ev-date {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-cyan);
  min-width: 140px;
}

.ev-info strong {
  font-size: 0.88rem;
  display: block;
  color: var(--text-primary);
}

.ev-info p {
  font-size: 0.76rem;
  color: var(--text-secondary);
}

/* 3 Track System */
.track-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.track-card {
  padding: 20px;
}

.track-badge {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 12px;
  display: inline-block;
  margin-bottom: 10px;
  background: var(--badge-bg);
  color: var(--accent-cyan);
  border: 1px solid var(--badge-border);
}

.track-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.track-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.task-checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  padding: 9px 12px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.check-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

/* Daily Routine Timeline */
.routine-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.routine-block {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.routine-block .time-stamp {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  min-width: 140px;
  color: var(--accent-cyan);
}

.block-content h4 {
  font-size: 0.9rem;
  margin-bottom: 2px;
  font-weight: 800;
  color: var(--text-primary);
}

.block-content p {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* GATE Roadmap */
.overlap-group {
  margin-bottom: 18px;
}

.overlap-group h4 {
  font-size: 0.92rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  font-weight: 800;
}

.overlap-group ul {
  list-style: none;
  padding-left: 18px;
}

.overlap-group li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 5px;
  position: relative;
}

.overlap-group li::before {
  content: "•";
  color: var(--accent-cyan);
  font-weight: bold;
  display: inline-block;
  width: 1em;
  margin-left: -1em;
}

.milestone-timeline-item {
  padding-left: 16px;
  border-left: 2px solid var(--accent-cyan);
  margin-bottom: 18px;
  position: relative;
}

.milestone-timeline-item::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  position: absolute;
  left: -5px;
  top: 4px;
}

.m-sem {
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 800;
  display: block;
  margin-bottom: 2px;
}

/* Vault Search & Grid */
.vault-search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.vault-search-bar input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  width: 100%;
}

.vault-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.vault-card {
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.vault-card h4 {
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--text-primary);
  font-weight: 800;
}

.vault-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 12px;
}

.vault-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Faculty Directory Cards */
.faculty-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faculty-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px;
  background: var(--bg-canvas);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.fac-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-cyan));
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

.fac-details h4 {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 800;
}

.fac-details p {
  font-size: 0.76rem;
  color: var(--text-secondary);
  margin-bottom: 3px;
}

.mentor-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mentor-list li {
  padding: 12px;
  background: var(--bg-canvas);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.mentor-list strong {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-cyan);
}

.mentor-list p {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Modal Overlay */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  width: 90%;
  max-width: 520px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-primary);
  cursor: pointer;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--border-focus);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

/* Sidebar Overlay Backdrop on Mobile */
.sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  z-index: 140;
}

.sidebar-backdrop.active {
  display: block;
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 1024px) {
  .top-nav { padding: 12px 18px; }
  .mobile-menu-btn { display: block; }
  .nav-center { display: none; }
  .dashboard-container { flex-direction: column; }

  .sidebar {
    position: fixed;
    top: 0;
    left: -290px;
    width: 280px;
    height: 100vh;
    z-index: 150;
    box-shadow: var(--shadow-hover);
    transition: left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .sidebar.open { left: 0; }
  .sidebar-close-btn { display: block; }
  .main-content { padding: 20px 16px; }
  .grid-2col { grid-template-columns: 1fr; }

  .hero-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-stats {
    width: 100%;
    justify-content: space-between;
  }

  .hero-stat-item { flex: 1; }
}

@media (max-width: 640px) {
  .hide-on-mobile { display: none !important; }
  .brand-text h1 { font-size: 1rem; }
  .sub-badge { display: none; }
  .kpi-grid { grid-template-columns: 1fr; }

  .hero-stats {
    flex-wrap: wrap;
    gap: 10px;
  }

  .hero-stat-item { min-width: 45%; }
  .section-header h2 { font-size: 1.15rem; }

  .routine-block {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .routine-block .time-stamp { min-width: auto; }

  .calendar-event-list li {
    flex-direction: column;
    gap: 4px;
  }

  .ev-date { min-width: auto; }

  .task-item-card {
    flex-direction: column;
    align-items: flex-start;
  }
}