/* ============================================
   Campus Circle - Dark Theme
   ============================================ */

/* --- CSS Custom Properties (Dark Overrides) --- */
[data-theme="dark"],
body.dark {
  /* Brand Colors */
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-light: rgba(99, 102, 241, 0.15);
  --primary-rgb: 99, 102, 241;

  /* Backgrounds */
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #1e293b;
  --bg-elevated: #253349;
  --hover-bg: #334155;
  --active-bg: #475569;

  /* Text */
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* Borders & Shadows */
  --border: #334155;
  --border-light: #1e293b;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3), 0 4px 6px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.35), 0 10px 10px rgba(0, 0, 0, 0.25);

  /* Status Colors */
  --success: #34d399;
  --success-light: rgba(52, 211, 153, 0.15);
  --warning: #fbbf24;
  --warning-light: rgba(251, 191, 36, 0.15);
  --danger: #f87171;
  --danger-light: rgba(248, 113, 113, 0.15);
  --info: #60a5fa;
  --info-light: rgba(96, 165, 250, 0.15);

  /* Header & Sidebar (Admin) */
  --header-bg: #1e293b;
  --header-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --sidebar-bg: #1e293b;
}

/* --- Reset & Base (Dark Overrides) --- */
[data-theme="dark"] body,
body.dark {
  background-color: var(--bg);
  color: var(--text);
}

[data-theme="dark"] ::selection,
body.dark ::selection {
  background-color: var(--primary);
  color: var(--text-inverse);
}

[data-theme="dark"] a,
body.dark a {
  color: var(--primary);
}

[data-theme="dark"] a:hover,
body.dark a:hover {
  color: var(--primary-hover);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6,
body.dark h1,
body.dark h2,
body.dark h3,
body.dark h4,
body.dark h5,
body.dark h6 {
  color: var(--text);
}

[data-theme="dark"] hr,
body.dark hr {
  border-top-color: var(--border);
}

/* --- Layout (Dark Overrides) --- */
[data-theme="dark"] .header,
body.dark .header {
  background-color: var(--header-bg);
  box-shadow: var(--header-shadow);
}

[data-theme="dark"] .header-logo,
body.dark .header-logo {
  color: var(--primary);
}

[data-theme="dark"] .header-nav a,
body.dark .header-nav a {
  color: var(--text-secondary);
}

[data-theme="dark"] .header-nav a:hover,
[data-theme="dark"] .header-nav a.active,
body.dark .header-nav a:hover,
body.dark .header-nav a.active {
  color: var(--primary);
  background-color: var(--primary-light);
}

[data-theme="dark"] .card,
body.dark .card {
  background-color: var(--bg-card);
  border-color: var(--border);
  box-shadow: var(--shadow);
}

[data-theme="dark"] .card:hover,
body.dark .card:hover {
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .card-lift:hover,
body.dark .card-lift:hover {
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .card-header,
[data-theme="dark"] .card-footer,
body.dark .card-header,
body.dark .card-footer {
  border-color: var(--border);
}

/* --- Buttons (Dark Overrides) --- */
[data-theme="dark"] .btn-secondary,
body.dark .btn-secondary {
  background-color: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border);
}

[data-theme="dark"] .btn-secondary:hover,
body.dark .btn-secondary:hover {
  background-color: var(--hover-bg);
  border-color: var(--text-muted);
}

[data-theme="dark"] .btn-ghost,
body.dark .btn-ghost {
  color: var(--text-secondary);
}

[data-theme="dark"] .btn-ghost:hover,
body.dark .btn-ghost:hover {
  background-color: var(--hover-bg);
  color: var(--text);
}

[data-theme="dark"] .btn-outline,
body.dark .btn-outline {
  color: var(--primary);
  border-color: var(--primary);
}

[data-theme="dark"] .btn-outline:hover,
body.dark .btn-outline:hover {
  background-color: var(--primary);
  color: var(--text-inverse);
}

[data-theme="dark"] .btn-primary:hover,
body.dark .btn-primary:hover {
  box-shadow: 0 2px 8px rgba(var(--primary-rgb), 0.4);
}

[data-theme="dark"] .btn-danger:hover,
body.dark .btn-danger:hover {
  box-shadow: 0 2px 8px rgba(248, 113, 113, 0.3);
}

/* --- Forms (Dark Overrides) --- */
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="url"],
[data-theme="dark"] input[type="search"],
[data-theme="dark"] input[type="tel"],
[data-theme="dark"] input[type="date"],
[data-theme="dark"] textarea,
[data-theme="dark"] select,
body.dark input[type="text"],
body.dark input[type="email"],
body.dark input[type="password"],
body.dark input[type="number"],
body.dark input[type="url"],
body.dark input[type="search"],
body.dark input[type="tel"],
body.dark input[type="date"],
body.dark textarea,
body.dark select {
  background-color: var(--bg-input);
  border-color: var(--border);
  color: var(--text);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus,
body.dark input:focus,
body.dark textarea:focus,
body.dark select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
  background-color: var(--bg-elevated);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder,
body.dark input::placeholder,
body.dark textarea::placeholder {
  color: var(--text-muted);
}

[data-theme="dark"] input:disabled,
[data-theme="dark"] textarea:disabled,
[data-theme="dark"] select:disabled,
body.dark input:disabled,
body.dark textarea:disabled,
body.dark select:disabled {
  background-color: var(--hover-bg);
  opacity: 0.5;
}

[data-theme="dark"] input.error,
[data-theme="dark"] textarea.error,
[data-theme="dark"] select.error,
body.dark input.error,
body.dark textarea.error,
body.dark select.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.2);
}

[data-theme="dark"] select,
body.dark select {
  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");
}

/* --- Badge (Dark Overrides) --- */
[data-theme="dark"] .badge-primary,
body.dark .badge-primary {
  background-color: var(--primary-light);
  color: var(--primary);
}

[data-theme="dark"] .badge-success,
body.dark .badge-success {
  background-color: var(--success-light);
  color: var(--success);
}

[data-theme="dark"] .badge-warning,
body.dark .badge-warning {
  background-color: var(--warning-light);
  color: var(--warning);
}

[data-theme="dark"] .badge-danger,
body.dark .badge-danger {
  background-color: var(--danger-light);
  color: var(--danger);
}

[data-theme="dark"] .badge-info,
body.dark .badge-info {
  background-color: var(--info-light);
  color: var(--info);
}

[data-theme="dark"] .badge-gray,
body.dark .badge-gray {
  background-color: var(--hover-bg);
  color: var(--text-secondary);
}

/* --- Avatar (Dark Overrides) --- */
[data-theme="dark"] .avatar,
body.dark .avatar {
  background-color: var(--primary-light);
  color: var(--primary);
}

[data-theme="dark"] .avatar-group .avatar,
body.dark .avatar-group .avatar {
  border-color: var(--bg-card);
}

/* --- Modal (Dark Overrides) --- */
[data-theme="dark"] .modal-overlay,
body.dark .modal-overlay {
  background-color: rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .modal,
body.dark .modal {
  background-color: var(--bg-card);
  box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer,
body.dark .modal-header,
body.dark .modal-footer {
  border-color: var(--border);
}

[data-theme="dark"] .modal-close,
body.dark .modal-close {
  color: var(--text-muted);
}

[data-theme="dark"] .modal-close:hover,
body.dark .modal-close:hover {
  background-color: var(--hover-bg);
  color: var(--text);
}

/* --- Toast (Dark Overrides) --- */
[data-theme="dark"] .toast,
body.dark .toast {
  background-color: var(--bg-card);
  box-shadow: var(--shadow-lg);
}

/* --- Dropdown (Dark Overrides) --- */
[data-theme="dark"] .dropdown-menu,
body.dark .dropdown-menu {
  background-color: var(--bg-card);
  border-color: var(--border);
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .dropdown-item:hover,
body.dark .dropdown-item:hover {
  background-color: var(--hover-bg);
}

[data-theme="dark"] .dropdown-item.danger:hover,
body.dark .dropdown-item.danger:hover {
  background-color: var(--danger-light);
}

[data-theme="dark"] .dropdown-divider,
body.dark .dropdown-divider {
  background-color: var(--border);
}

/* --- Tabs (Dark Overrides) --- */
[data-theme="dark"] .tabs,
body.dark .tabs {
  border-bottom-color: var(--border);
}

[data-theme="dark"] .tab,
body.dark .tab {
  color: var(--text-secondary);
}

[data-theme="dark"] .tab:hover,
body.dark .tab:hover {
  color: var(--primary);
}

[data-theme="dark"] .tab.active,
body.dark .tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* --- Pagination (Dark Overrides) --- */
[data-theme="dark"] .pagination-item:hover,
body.dark .pagination-item:hover {
  background-color: var(--hover-bg);
  color: var(--primary);
}

[data-theme="dark"] .pagination-item.active,
body.dark .pagination-item.active {
  background-color: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

/* --- Search Bar (Dark Overrides) --- */
[data-theme="dark"] .search-bar input,
body.dark .search-bar input {
  background-color: var(--hover-bg);
  border-color: transparent;
  color: var(--text);
}

[data-theme="dark"] .search-bar input:focus,
body.dark .search-bar input:focus {
  background-color: var(--bg-input);
  border-color: var(--primary);
}

/* --- Carousel (Dark Overrides) --- */
[data-theme="dark"] .carousel-dot,
body.dark .carousel-dot {
  background-color: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .carousel-dot.active,
body.dark .carousel-dot.active {
  background-color: #ffffff;
}

[data-theme="dark"] .carousel-btn,
body.dark .carousel-btn {
  background-color: rgba(30, 41, 59, 0.9);
  color: var(--text);
}

[data-theme="dark"] .carousel-btn:hover,
body.dark .carousel-btn:hover {
  background-color: var(--bg-card);
}

/* --- Comment Thread (Dark Overrides) --- */
[data-theme="dark"] .comment-item:hover,
body.dark .comment-item:hover {
  background-color: var(--hover-bg);
}

[data-theme="dark"] .comment-author,
body.dark .comment-author {
  color: var(--text);
}

[data-theme="dark"] .comment-replies,
body.dark .comment-replies {
  border-left-color: var(--border);
}

/* --- Notification Item (Dark Overrides) --- */
[data-theme="dark"] .notification-item:hover,
body.dark .notification-item:hover {
  background-color: var(--hover-bg);
}

[data-theme="dark"] .notification-item.unread,
body.dark .notification-item.unread {
  background-color: var(--primary-light);
}

[data-theme="dark"] .notification-item.unread:hover,
body.dark .notification-item.unread:hover {
  background-color: rgba(99, 102, 241, 0.25);
}

[data-theme="dark"] .notification-icon.like,
body.dark .notification-icon.like {
  background-color: var(--danger-light);
  color: var(--danger);
}

[data-theme="dark"] .notification-icon.comment,
body.dark .notification-icon.comment {
  background-color: var(--info-light);
  color: var(--info);
}

[data-theme="dark"] .notification-icon.follow,
body.dark .notification-icon.follow {
  background-color: var(--success-light);
  color: var(--success);
}

[data-theme="dark"] .notification-icon.system,
body.dark .notification-icon.system {
  background-color: var(--warning-light);
  color: var(--warning);
}

/* --- Stat Card (Dark Overrides) --- */
[data-theme="dark"] .stat-card,
body.dark .stat-card {
  background-color: var(--bg-card);
  border-color: var(--border);
  box-shadow: var(--shadow);
}

[data-theme="dark"] .stat-card:hover,
body.dark .stat-card:hover {
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .stat-icon.primary,
body.dark .stat-icon.primary {
  background-color: var(--primary-light);
  color: var(--primary);
}

[data-theme="dark"] .stat-icon.success,
body.dark .stat-icon.success {
  background-color: var(--success-light);
  color: var(--success);
}

[data-theme="dark"] .stat-icon.warning,
body.dark .stat-icon.warning {
  background-color: var(--warning-light);
  color: var(--warning);
}

[data-theme="dark"] .stat-icon.danger,
body.dark .stat-icon.danger {
  background-color: var(--danger-light);
  color: var(--danger);
}

[data-theme="dark"] .stat-icon.info,
body.dark .stat-icon.info {
  background-color: var(--info-light);
  color: var(--info);
}

/* --- Empty State (Dark Overrides) --- */
[data-theme="dark"] .empty-state-icon,
body.dark .empty-state-icon {
  color: var(--text-muted);
}

/* --- Skeleton Loading (Dark Overrides) --- */
[data-theme="dark"] .skeleton,
body.dark .skeleton {
  background: linear-gradient(90deg, var(--hover-bg) 25%, var(--border) 50%, var(--hover-bg) 75%);
  background-size: 200% 100%;
}

/* --- Homepage (Dark Overrides) --- */
[data-theme="dark"] .home-hero,
body.dark .home-hero {
  background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
}

[data-theme="dark"] .circle-card,
body.dark .circle-card {
  background-color: var(--bg-card);
  border-color: var(--border);
  box-shadow: var(--shadow);
}

[data-theme="dark"] .circle-card:hover,
body.dark .circle-card:hover {
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .circle-card-cover,
body.dark .circle-card-cover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(109, 40, 217, 0.3) 100%);
}

[data-theme="dark"] .circle-card-avatar,
body.dark .circle-card-avatar {
  border-color: var(--bg-card);
  background-color: var(--bg-card);
}

[data-theme="dark"] .circle-card-footer,
body.dark .circle-card-footer {
  border-top-color: var(--border);
}

[data-theme="dark"] .feed-item:hover,
body.dark .feed-item:hover {
  background-color: var(--hover-bg);
}

[data-theme="dark"] .feed-item,
body.dark .feed-item {
  border-bottom-color: var(--border);
}

[data-theme="dark"] .feed-item-circle,
body.dark .feed-item-circle {
  color: var(--primary);
}

/* --- Circle Page (Dark Overrides) --- */
[data-theme="dark"] .circle-banner,
body.dark .circle-banner {
  background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
}

[data-theme="dark"] .circle-banner-avatar,
body.dark .circle-banner-avatar {
  border-color: var(--bg-card);
  background-color: var(--bg-card);
}

[data-theme="dark"] .member-item,
body.dark .member-item {
  background-color: var(--hover-bg);
}

[data-theme="dark"] .member-item:hover,
body.dark .member-item:hover {
  background-color: var(--active-bg);
}

[data-theme="dark"] .post-item,
body.dark .post-item {
  border-bottom-color: var(--border);
}

[data-theme="dark"] .post-item:hover,
body.dark .post-item:hover {
  background-color: var(--hover-bg);
}

[data-theme="dark"] .post-item-title a,
body.dark .post-item-title a {
  color: var(--text);
}

[data-theme="dark"] .post-item-title a:hover,
body.dark .post-item-title a:hover {
  color: var(--primary);
}

/* --- Post Page (Dark Overrides) --- */
[data-theme="dark"] .post-body blockquote,
body.dark .post-body blockquote {
  background-color: var(--primary-light);
  border-left-color: var(--primary);
  color: var(--text-secondary);
}

[data-theme="dark"] .post-body code,
body.dark .post-body code {
  background-color: var(--hover-bg);
  color: var(--text);
}

[data-theme="dark"] .post-body pre,
body.dark .post-body pre {
  background-color: #0f172a;
  border: 1px solid var(--border);
}

[data-theme="dark"] .post-actions-bar,
body.dark .post-actions-bar {
  border-top-color: var(--border);
  border-bottom-color: var(--border);
}

/* --- Profile Page (Dark Overrides) --- */
[data-theme="dark"] .profile-avatar,
body.dark .profile-avatar {
  border-color: var(--primary-light);
}

[data-theme="dark"] .profile-info-item,
body.dark .profile-info-item {
  background-color: var(--hover-bg);
}

/* --- Admin Layout (Dark Overrides) --- */
[data-theme="dark"] .admin-sidebar,
body.dark .admin-sidebar {
  background-color: var(--sidebar-bg);
  border-right-color: var(--border);
}

[data-theme="dark"] .sidebar-header,
body.dark .sidebar-header {
  border-bottom-color: var(--border);
}

[data-theme="dark"] .sidebar-brand,
body.dark .sidebar-brand {
  color: var(--primary);
}

[data-theme="dark"] .sidebar-section-title,
body.dark .sidebar-section-title {
  color: var(--text-muted);
}

[data-theme="dark"] .sidebar-link,
body.dark .sidebar-link {
  color: var(--text-secondary);
}

[data-theme="dark"] .sidebar-link:hover,
body.dark .sidebar-link:hover {
  background-color: var(--hover-bg);
  color: var(--text);
}

[data-theme="dark"] .sidebar-link.active,
body.dark .sidebar-link.active {
  background-color: var(--primary-light);
  color: var(--primary);
}

[data-theme="dark"] .sidebar-footer,
body.dark .sidebar-footer {
  border-top-color: var(--border);
}

[data-theme="dark"] .admin-header,
body.dark .admin-header {
  background-color: var(--header-bg);
  border-bottom-color: var(--border);
}

/* --- Data Tables (Dark Overrides) --- */
[data-theme="dark"] .data-table-wrapper,
body.dark .data-table-wrapper {
  background-color: var(--bg-card);
  border-color: var(--border);
}

[data-theme="dark"] .data-table th,
body.dark .data-table th {
  background-color: var(--hover-bg);
  color: var(--text-secondary);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .data-table td,
body.dark .data-table td {
  border-bottom-color: var(--border);
  color: var(--text);
}

[data-theme="dark"] .data-table tr:hover td,
body.dark .data-table tr:hover td {
  background-color: var(--hover-bg);
}

/* --- Utility Overrides (Dark) --- */
[data-theme="dark"] .bg-primary-light,
body.dark .bg-primary-light {
  background-color: var(--primary-light);
}

[data-theme="dark"] .bg-success-light,
body.dark .bg-success-light {
  background-color: var(--success-light);
}

[data-theme="dark"] .bg-warning-light,
body.dark .bg-warning-light {
  background-color: var(--warning-light);
}

[data-theme="dark"] .bg-danger-light,
body.dark .bg-danger-light {
  background-color: var(--danger-light);
}

/* --- Scrollbar (Dark Overrides) --- */
[data-theme="dark"] ::-webkit-scrollbar-track,
body.dark ::-webkit-scrollbar-track {
  background: transparent;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb,
body.dark ::-webkit-scrollbar-thumb {
  background-color: var(--border);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover,
body.dark ::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

/* --- Mobile Nav (Dark Overrides) --- */
[data-theme="dark"] .header-nav.mobile-open,
body.dark .header-nav.mobile-open {
  background-color: var(--header-bg);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .hamburger span,
body.dark .hamburger span {
  background-color: var(--text);
}

/* --- Sidebar Overlay (Dark Overrides) --- */
[data-theme="dark"] .sidebar-overlay,
body.dark .sidebar-overlay {
  background-color: rgba(0, 0, 0, 0.7);
}

/* --- Print (Dark Overrides) --- */
@media print {
  [data-theme="dark"] body,
  body.dark {
    background: white;
    color: black;
  }

  [data-theme="dark"] .card,
  body.dark .card {
    background: white;
    border-color: #ddd;
  }
}