/* TravelAtlas Advanced UI - Slate/Emerald/Teal Palette */

/* ── CSS Variable Definitions ──────────────────────────────────────────────── */

:root {
    /* Light Mode Palette */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;

    --primary: #059669;
    --primary-hover: #047857;
    --primary-light: #d1fae5;
    --secondary: #0d9488;
    --secondary-hover: #0f766e;
    --accent: #14b8a6;

    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --success: #10b981;
    --success-light: #d1fae5;
    --info: #0ea5e9;
    --info-light: #e0f2fe;

    --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(226, 232, 240, 0.8);

    --font-sans: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-primary: #090d16;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #334155;

    --primary: #10b981;
    --primary-hover: #34d399;
    --primary-light: #064e3b;
    --secondary: #14b8a6;
    --secondary-hover: #2dd4bf;
    --accent: #2dd4bf;

    --card-shadow: 0 4px 20px -2px rgb(0 0 0 / 0.5);
    --glass-bg: rgba(15, 23, 42, 0.75);
    --glass-border: rgba(51, 65, 85, 0.7);
}

/* ── Theme Transition ─────────────────────────────────────────────────────── */

*,
*::before,
*::after {
    transition: background-color 0.25s ease, color 0.25s ease,
                border-color 0.25s ease, box-shadow 0.25s ease;
}

/* ── Global Reset ─────────────────────────────────────────────────────────── */

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.text-muted-custom { color: var(--text-muted) !important; }
.text-secondary-custom { color: var(--text-secondary) !important; }
.text-teal { color: var(--primary) !important; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.btn-primary-custom {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff !important;
    font-weight: 600;
    transition: var(--transition-smooth);
}
.btn-primary-custom:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}
.btn-primary-custom:active { transform: translateY(0); }

.btn-secondary-custom {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary) !important;
    font-weight: 600;
    transition: var(--transition-smooth);
}
.btn-secondary-custom:hover {
    background-color: var(--border-color);
    transform: translateY(-2px);
}
.btn-secondary-custom:active { transform: translateY(0); }

.btn-teal {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: #ffffff !important;
    font-weight: 600;
    transition: var(--transition-smooth);
}
.btn-teal:hover {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(20, 184, 166, 0.3);
}
.btn-teal:active { transform: translateY(0); }

.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}
.btn-loading::after {
    content: '';
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 0.5rem;
    vertical-align: middle;
}

/* ── Accessibility: Focus States ──────────────────────────────────────────── */

*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 0.25rem;
}
.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 0.125rem;
}
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* ── Navigation ────────────────────────────────────────────────────────────── */

.navbar-custom {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.nav-link-custom {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
}
.nav-link-custom::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 1px;
}
.nav-link-custom:hover::after,
.nav-link-custom.active::after {
    width: 80%;
}
.nav-link-custom:hover, .nav-link-custom.active {
    color: var(--primary);
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        background: var(--glass-bg);
        backdrop-filter: blur(16px);
        border-radius: 1rem;
        padding: 1rem;
        margin-top: 0.5rem;
        box-shadow: var(--card-shadow);
    }
    .nav-link-custom {
        padding: 0.75rem 1rem;
        border-radius: 0.5rem;
    }
    .nav-link-custom:hover {
        background: var(--primary-light);
    }
}

/* ── Glass Card ────────────────────────────────────────────────────────────── */

.glass-card {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
}
.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px -5px rgb(0 0 0 / 0.15);
    border-color: var(--primary);
}

/* ── Skeleton Loading States ───────────────────────────────────────────────── */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--border-color) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: 0.5rem;
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.skeleton-card { height: 350px; border-radius: 1rem; }
.skeleton-text { height: 1rem; margin-bottom: 0.5rem; width: 80%; }
.skeleton-text-sm { height: 0.75rem; width: 50%; }
.skeleton-text-xs { height: 0.5rem; width: 30%; }
.skeleton-image { height: 160px; width: 100%; border-radius: 1rem 1rem 0 0; }

/* ── Toast Notifications ───────────────────────────────────────────────────── */

.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}
.toast {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 1rem 1.25rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    max-width: 450px;
    transform: translateX(120%);
    animation: toast-in 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards,
               toast-out 0.3s ease-in 3.5s forwards;
    pointer-events: auto;
}
.toast-success { border-left: 4px solid var(--primary); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-info { border-left: 4px solid var(--info); }
.toast-warning { border-left: 4px solid var(--warning); }

@keyframes toast-in {
    to { transform: translateX(0); }
}
@keyframes toast-out {
    to { transform: translateX(120%); opacity: 0; }
}

/* ── Form Validation ───────────────────────────────────────────────────────── */

.form-control.is-valid {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}
.form-control.is-invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}
.invalid-feedback {
    display: none;
    color: var(--danger);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}
.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

/* ── HTMX Loading Indicators ───────────────────────────────────────────────── */

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
    opacity: 1;
}
.htmx-indicator {
    opacity: 0;
    transition: opacity 0.2s ease;
}
.spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.spinner-sm { width: 1rem; height: 1rem; border-width: 1.5px; }

/* ── Reading Progress Bar ──────────────────────────────────────────────────── */

.progress-bar-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 9998;
    background: transparent;
}
.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.1s linear;
}

/* ── Image Aspect Ratio Containers ─────────────────────────────────────────── */

.img-container {
    position: relative;
    overflow: hidden;
    background: var(--bg-tertiary);
}
.img-container img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.img-container::before {
    content: '';
    display: block;
    padding-bottom: 56.25%;
}
.img-container.portrait::before { padding-bottom: 75%; }
.img-container.square::before { padding-bottom: 100%; }

/* ── Scroll-triggered Animations ───────────────────────────────────────────── */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}
.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Stat Cards & Micro-interactions ────────────────────────────────────────── */

.stat-card {
    transition: var(--transition-smooth);
    cursor: default;
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.12);
    border-color: var(--primary);
}
.category-badge {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 2rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}
.category-badge:hover {
    background-color: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}
.category-badge:active {
    transform: scale(0.95);
}

/* ── Search Input ──────────────────────────────────────────────────────────── */

.search-input-custom {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 2rem;
    padding: 0.75rem 1.5rem 0.75rem 3rem;
    transition: var(--transition-smooth);
}
.search-input-custom:focus {
    background-color: var(--bg-secondary);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

/* ── Pagination ────────────────────────────────────────────────────────────── */

.pagination-info {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.75rem;
}

/* ── Sticky Sidebar ────────────────────────────────────────────────────────── */

.sidebar-sticky {
    position: sticky;
    top: 6rem;
}

/* ── Hero Section ──────────────────────────────────────────────────────────── */

.hero-gradient {
    position: relative;
    background: linear-gradient(135deg, #020617 0%, #0f172a 100%);
    overflow: hidden;
    padding: 6rem 0;
}
.hero-gradient::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
    z-index: 1;
}
.hero-gradient::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.15) 0%, transparent 70%);
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 2;
}

/* ── Footer ────────────────────────────────────────────────────────────────── */

.footer-custom {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}
.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}
.footer-link:hover {
    color: var(--primary);
    padding-left: 4px;
}

/* ── Scrollbar ─────────────────────────────────────────────────────────────── */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) var(--bg-primary);
}

/* ── Scroll-to-Top Button ──────────────────────────────────────────────────── */

#scroll-top-btn {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
    transform: translateY(10px);
}
#scroll-top-btn.show {
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: translateY(0);
}

/* ── Image Styles ──────────────────────────────────────────────────────────── */

.ta-lazy-img {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}
.ta-lazy-img.ta-img-visible {
    opacity: 1;
}
.ta-placeholder-img {
    opacity: 0.7;
    object-fit: contain !important;
    background: var(--bg-secondary);
    padding: 20px;
}
.ta-img-wrapper {
    position: relative;
    overflow: hidden;
    background: var(--bg-tertiary);
}
.ta-img-wrapper .ta-img-loading {
    opacity: 0;
}

/* ── Animated Elements ──────────────────────────────────────────────────────── */

.pulse-emerald {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    animation: pulse-emerald 2s infinite;
}
@keyframes pulse-emerald {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* ── Reduced Motion ────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .fade-in,
    .fade-in-left,
    .fade-in-up {
        opacity: 1;
        transform: none;
    }
    .skeleton {
        animation: none;
        background: var(--bg-tertiary);
    }
    .toast {
        animation: none;
        transform: translateX(0);
        opacity: 1;
    }
}

/* ── Print Styles ──────────────────────────────────────────────────────────── */

@media print {
    .navbar,
    .footer-custom,
    #scroll-top-btn,
    .btn,
    .toast-container,
    .progress-bar-container {
        display: none !important;
    }
    .glass-card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background: #fff !important;
    }
    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
    a {
        color: #000 !important;
        text-decoration: underline;
    }
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
    .container {
        max-width: 100% !important;
    }
    .hero-gradient {
        padding: 2rem 0;
        background: #f8fafc !important;
        color: #000 !important;
    }
    .hero-gradient h1,
    .hero-gradient p {
        color: #000 !important;
    }
}

/* ── Extra Utilities ───────────────────────────────────────────────────────── */

.hover-teal:hover { color: var(--primary) !important; }
.hover-scale:hover { transform: scale(1.02); }
.leading-relaxed { line-height: 1.7; }
.leading-loose { line-height: 1.9; }
.letter-spacing-1 { letter-spacing: 0.025em; }
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 32rem; }
.max-w-lg { max-width: 48rem; }
.max-w-2xl { max-width: 42rem; }
.cursor-pointer { cursor: pointer; }