/* Modern Premium Theme for World Hotels */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Brand Colors */
    --primary-color: #0f172a;
    /* Slate 900 */
    --primary-light: #1e293b;
    /* Slate 800 */
    --secondary-color: #f59e0b;
    /* Amber 500 */
    --secondary-hover: #d97706;
    /* Amber 600 */
    --accent-color: #3b82f6;
    /* Blue 500 */

    /* Backgrounds */
    --bg-body: #f8fafc;
    /* Slate 50 */
    --bg-surface: #ffffff;
    --bg-card: #ffffff;

    /* Text */
    --text-main: #0f172a;
    --text-secondary: #64748b;
    /* Slate 500 */
    --text-inverse: #ffffff;

    /* UI Elements */
    --border-radius-sm: 0.5rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- Navigation --- */
.navbar {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-inverse) !important;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.navbar-brand i {
    color: var(--secondary-color);
    font-size: 1.75rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.7) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-inverse) !important;
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-custom {
    padding: 0.6rem 1.25rem;
    font-weight: 600;
    border-radius: 50px;
    /* Pillow shape for modern feel */
    transition: var(--transition-normal);
}

.btn-outline-light.btn-custom:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

/* --- Hero & Sections --- */
main {
    min-height: calc(100vh - 300px);
}

.hero {
    position: relative;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.8)),
        url('https://images.unsplash.com/photo-1542314833-86dd32578002?w=1600&q=80') center/cover fixed;
    color: white;
    padding: 8rem 0 6rem;
    margin-bottom: 4rem;
    border-radius: 0 0 3rem 3rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(245, 158, 11, 0.2), transparent 40%);
    pointer-events: none;
}

.hero h1 {
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
    font-size: 3.5rem;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Cards & Containers --- */
.card {
    background: var(--bg-card);
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-xl);
    transition: var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(245, 158, 11, 0.2);
}

.card-header {
    background: var(--bg-surface);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 700;
    padding: 1.25rem 1.5rem;
}

/* --- Feature Cards --- */
.feature-card {
    background: var(--bg-surface);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius-xl);
    text-align: center;
    border: 1px solid transparent;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    height: 100%;
}

.feature-card:hover {
    background: white;
    border-color: rgba(245, 158, 11, 0.3);
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    border-radius: 50%;
    background: rgba(245, 158, 11, 0.1);
    color: var(--secondary-color);
    font-size: 2rem;
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--secondary-color);
    color: white;
    transform: scale(1.1) rotate(5deg);
}

/* --- Quick Search --- */
.quick-search {
    background: var(--bg-surface);
    padding: 3rem;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-hover);
    margin-top: -5rem;
    /* Overlap hero */
    position: relative;
    z-index: 10;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.form-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-control,
.form-select {
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
}

/* --- Buttons --- */
.btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--primary-color);
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 6px -1px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(245, 158, 11, 0.4);
}

/* --- City Cards --- */
.city-card {
    position: relative;
    overflow: hidden;
    height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    color: white;
    transition: var(--transition-normal);
    background-size: cover;
    background-position: center;
}

/* Dynamic Gradients for variation but sticking to theme */
.city-card {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.city-card:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.city-card h4 {
    font-weight: 700;
    margin: 0;
    z-index: 2;
}

.city-card p {
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    z-index: 2;
}

/* --- Footer --- */
.footer {
    background-color: var(--primary-color);
    color: var(--text-inverse);
    padding: 5rem 0 2rem;
    margin-top: auto;
    border-top-left-radius: 3rem;
    border-top-right-radius: 3rem;
}

.footer h5 {
    color: var(--secondary-color);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 1.5rem;
}

.footer a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

/* --- Utilities --- */
.text-primary {
    color: var(--secondary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.section-title {
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 6rem 0 4rem;
        border-radius: 0 0 2rem 2rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .quick-search {
        margin-top: -2rem;
        padding: 1.5rem;
    }
}