/* ═══════════════════════════════════════════════════════════════
   Al Tower Tours — Dark Mode
   Uses html.dark-mode for instant application before body renders,
   and body.dark-mode as a fallback for component-level selectors.
   ═══════════════════════════════════════════════════════════════ */

/* Core dark variables — applied on html for instant theme swap */
html.dark-mode,
body.dark-mode {
    --bg-body: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-2: #1a2234;
    --bg-surface-3: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;
    --border-color: #334155;
    --border-primary: rgba(56,189,248,0.25);
    --glass-bg: rgba(15,23,42,0.8);
    --glass-border: rgba(51,65,85,0.5);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.5);
    --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
    --gradient-card: linear-gradient(135deg, rgba(30,41,59,0.9), rgba(30,41,59,0.7));
}

/* Component-level overrides */
.dark-mode .header.scrolled {
    background: rgba(15,23,42,0.9);
    border-bottom-color: rgba(51,65,85,0.5);
}

.dark-mode .menu-toggle span {
    background: #e2e8f0;
}

.dark-mode .hero {
    background: linear-gradient(135deg, #0c4a6e 0%, #082f49 50%, #0f172a 100%);
}

.dark-mode .stat-card .stat-icon {
    background: rgba(14,165,233,0.15);
}

.dark-mode .feature-card {
    background: var(--bg-surface);
}

.dark-mode .testimonial-content::before {
    color: rgba(56,189,248,0.1);
}

.dark-mode .footer {
    background: #0a0f1a;
    border-top: 1px solid rgba(51,65,85,0.3);
}

.dark-mode .page-header::after {
    background: var(--bg-body);
}

.dark-mode .alert-success {
    background: rgba(34,197,94,0.1);
    color: #86efac;
    border-color: rgba(34,197,94,0.2);
}

.dark-mode .alert-error {
    background: rgba(239,68,68,0.1);
    color: #fca5a5;
    border-color: rgba(239,68,68,0.2);
}

.dark-mode .form-control {
    background: var(--bg-surface-2);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.dark-mode .form-control:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 4px rgba(14,165,233,0.15);
}

.dark-mode .gallery-filter-btn {
    background: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.dark-mode .gallery-filter-btn:hover,
.dark-mode .gallery-filter-btn.active {
    background: var(--gradient-primary);
    color: #fff;
}

.dark-mode .contact-info-card .icon {
    background: rgba(14,165,233,0.15);
}

.dark-mode .section-badge {
    background: rgba(14,165,233,0.1);
    border-color: rgba(14,165,233,0.2);
}

.dark-mode .pagination a,
.dark-mode .pagination span {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.dark-mode .map-section iframe {
    filter: grayscale(30%) invert(92%) hue-rotate(180deg);
}

/* Toggle button visual state */
.theme-toggle {
    width: 56px;
    height: 30px;
    background: var(--bg-surface-3);
    border-radius: 9999px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s ease;
    border: 2px solid var(--border-color);
    flex-shrink: 0;
}

.theme-toggle::before {
    content: '☀️';
    position: absolute;
    top: 50%;
    left: 3px;
    transform: translateY(-50%);
    width: 22px;
    height: 22px;
    background: var(--bg-surface);
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.dark-mode .theme-toggle {
    background: var(--primary-700);
    border-color: var(--primary-600);
}

.dark-mode .theme-toggle::before {
    content: '🌙';
    left: calc(100% - 25px);
    background: var(--primary-800);
}

/* Nav link colors in dark mode */
.dark-mode .nav a {
    color: var(--text-secondary);
}

.dark-mode .nav a:hover,
.dark-mode .nav a.active {
    color: var(--primary-400);
    background: rgba(14,165,233,0.1);
}

.dark-mode .logo-text .brand-tagline {
    color: var(--text-tertiary);
}

/* Tour card dark adjustments */
.dark-mode .tour-card-title {
    color: var(--text-primary);
}

.dark-mode .tour-card:hover .tour-card-title {
    color: var(--primary-400);
}

/* Vehicle tag badge in dark */
.dark-mode .vehicle-tags .vehicle-tag {
    background: rgba(14,165,233,0.12);
    color: var(--primary-300);
    border-color: rgba(14,165,233,0.2);
}

/* Smooth transition for theme change */
body, body * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Exclude elements that need instant transitions */
.tour-card-image img, .gallery-item img, .about-image img,
.hero, .cta-section, .page-header, canvas, .btn, a {
    transition: transform 0.3s ease, opacity 0.3s ease, box-shadow 0.3s ease !important;
}