/* ================================
   Drone360Web - Modern Glassmorphism UI
   ================================ */

:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --accent-primary: #00d4ff;
  --accent-secondary: #7c3aed;
  --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-primary: #ffffff;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border: #1f1f2e;
  --border-light: #2a2a3a;
  
  /* Effects */
  --glass-bg: rgba(18, 18, 26, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --glow: 0 0 20px rgba(0, 212, 255, 0.3);
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  padding-top: 70px; /* Navbar height */
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ================================
   Buttons
   ================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-primary);
  box-shadow: var(--glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

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

.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-full {
  width: 100%;
}

/* ================================
   Navigation
   ================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
}

.logo-icon {
  font-size: 1.75rem;
}

.logo .accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-primary);
}

.nav-auth, .nav-user {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Theme Switcher */
.theme-switcher {
  display: flex;
  gap: 6px;
  padding: 4px 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.theme-btn {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-btn:hover {
  transform: scale(1.15);
  border-color: var(--text-secondary);
}

.theme-btn[data-theme="cyan"] {
  background: linear-gradient(135deg, #00d4ff, #7c3aed);
}

.theme-btn[data-theme="green"] {
  background: linear-gradient(135deg, #10b981, #059669);
}

.theme-btn[data-theme="orange"] {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.theme-btn[data-theme="pink"] {
  background: linear-gradient(135deg, #ec4899, #be185d);
}

.user-name {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: 0.3s;
}

/* ================================
   Hero Section
   ================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 80%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease-out;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stats {
  display: flex;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  min-width: 140px;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-heading);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

/* ================================
   Gallery
   ================================ */
.gallery-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: var(--space-2xl) 0 var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.gallery-header h2 {
  font-size: 2rem;
}

.gallery-filters {
  display: flex;
  gap: var(--space-md);
}

.gallery-filters select {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  cursor: pointer;
  min-width: 160px;
}

.gallery-filters select:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
  padding-bottom: var(--space-2xl);
}

.photo-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
  animation: fadeInUp 0.5s ease-out both;
}

.photo-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 212, 255, 0.15);
}

.photo-card-image {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.photo-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.photo-card:hover .photo-card-image img {
  transform: scale(1.05);
}

.photo-card-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

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

.badge-member {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.photo-card-360 {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
}

.photo-card-premium {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--warning);
  color: #000;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.photo-card-quality {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.badge-premium {
  background: var(--warning);
  color: #000;
}

.photo-card-body {
  padding: var(--space-lg);
}

.photo-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.photo-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.photo-card-category {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.category-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-2xl);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
}

.empty-state h3 {
  margin-bottom: var(--space-sm);
}

/* ================================
   Admin Panel
   ================================ */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: var(--space-lg);
  position: fixed;
  top: 70px;
  bottom: 0;
  left: 0;
  overflow-y: auto;
  z-index: 999;
}

.admin-menu li {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-secondary);
  transition: all 0.3s ease;
  margin-bottom: var(--space-xs);
}

.admin-menu li:hover,
.admin-menu li.active {
  background: var(--bg-tertiary);
  color: var(--accent-primary);
}

.admin-content {
  flex: 1;
  margin-left: 260px;
  padding: var(--space-xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.stat-card-large {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.stat-icon {
  font-size: 2.5rem;
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-heading);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-title {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
}

/* Tables */
.admin-table {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.admin-table th,
.admin-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
}

.admin-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.admin-table tr {
  border-bottom: 1px solid var(--border);
}

.admin-table tr:last-child {
  border-bottom: none;
}

.admin-table tr:hover {
  background: var(--bg-tertiary);
}

/* Categories Grid */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.category-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.category-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.category-color {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.category-name {
  font-weight: 600;
}

.category-count {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.category-actions {
  display: flex;
  gap: var(--space-sm);
}

/* ================================
   Modals
   ================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  padding: var(--space-lg);
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modalIn 0.3s ease;
}

.modal-large {
  max-width: 640px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.3s;
}

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

.modal h2 {
  margin-bottom: var(--space-xl);
}

/* Fullscreen Viewer Modal */
.fullscreen-modal {
  padding: 0;
}

.viewer-container {
  width: 100%;
  height: 100%;
  display: flex;
  background: var(--bg-primary);
}

.viewer-main {
  flex: 1;
  position: relative;
}

#panorama {
  width: 100%;
  height: 100%;
}

.viewer-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 10;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  width: 44px;
  height: 44px;
  font-size: 1.5rem;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-sidebar {
  width: 380px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  padding: var(--space-xl);
  overflow-y: auto;
}

.viewer-sidebar h3 {
  margin-bottom: var(--space-md);
}

.viewer-meta {
  display: flex;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.badge {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-category {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.member-only-info {
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
}

.member-only-info h4 {
  margin: var(--space-lg) 0 var(--space-sm);
  color: var(--accent-primary);
}

.viewer-map {
  height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.meta-grid {
  display: grid;
  gap: var(--space-sm);
}

.meta-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.meta-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.meta-value {
  font-weight: 500;
}

/* ================================
   Forms
   ================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  color: var(--text-primary);
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.checkbox-label input {
  width: auto;
}

.form-help {
  display: block;
  margin-top: var(--space-xs);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  margin-bottom: var(--space-lg);
  position: relative;
}

.upload-area:hover {
  border-color: var(--accent-primary);
  background: rgba(0, 212, 255, 0.05);
}

.upload-area input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-placeholder {
  pointer-events: none;
}

.upload-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-md);
}

.upload-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.upload-preview img {
  max-height: 200px;
  border-radius: var(--radius-md);
}

/* Progress Bar */
.progress-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-md);
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  transition: width 0.3s;
}

.progress-text {
  position: absolute;
  right: 0;
  top: -20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ================================
   Toast Notifications
   ================================ */
#toastContainer {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  min-width: 280px;
}

.toast.success {
  border-color: var(--success);
}

.toast.error {
  border-color: var(--danger);
}

.toast-icon {
  font-size: 1.25rem;
}

.toast-message {
  flex: 1;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ================================
   Footer
   ================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0;
  text-align: center;
  color: var(--text-secondary);
  margin-top: auto;
}

/* ================================
   Responsive
   ================================ */
@media (max-width: 1024px) {
  .viewer-sidebar {
    width: 320px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-stats {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .gallery-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .gallery-filters {
    width: 100%;
  }
  
  .gallery-filters select {
    flex: 1;
  }
  
  .admin-layout {
    flex-direction: column;
  }
  
  .admin-sidebar {
    position: relative;
    top: 0;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  
  .admin-content {
    margin-left: 0;
  }
  
  .viewer-container {
    flex-direction: column;
  }
  
  .viewer-sidebar {
    width: 100%;
    max-height: 40vh;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .photo-grid {
    grid-template-columns: 1fr;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}

/* Utility Classes */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.mt-md { margin-top: var(--space-md); }
.mb-md { margin-bottom: var(--space-md); }