/* ============================================
   PREMIUM TRAVEL WEBSITE THEME
   Modern, Professional, Enterprise-Level Design
   ============================================ */

/* ========== CSS VARIABLES ========== */
:root {
    /* Primary Brand Colors - Yellow/Orange Theme */
    --primary-color: #f39c12;
    --primary-dark: #e67e22;
    --primary-light: #f5af19;
    --secondary-color: #ff6b35;
    --secondary-dark: #e55a2b;
    
    /* Accent Colors */
    --accent-gold: #ffa726;
    --accent-green: #00c853;
    --accent-orange: #f12711;
    
    /* Neutral Colors */
    --dark-bg: #0f1419;
    --dark-card: #1a1f2e;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-light: #9e9e9e;
    
    /* Gradients - Yellow/Orange Theme */
    --gradient-primary: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    --gradient-sunset: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-ocean: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    --gradient-success: linear-gradient(135deg, #00c853 0%, #64dd17 100%);
    --gradient-dark: linear-gradient(135deg, #1a1f2e 0%, #2d3748 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 12px 40px rgba(0,0,0,0.15);
    --shadow-hover: 0 16px 48px rgba(0,0,0,0.2);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========== GLOBAL RESETS & BASE ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--light-bg);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

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

/* ========== MODERN BUTTONS ========== */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: -1;
}

.btn-premium:hover::before {
    transform: translateX(0);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary-premium {
    background: var(--gradient-ocean);
    color: var(--white);
}

.btn-secondary-premium {
    background: var(--gradient-sunset);
    color: var(--white);
}

.btn-success-premium {
    background: var(--gradient-success);
    color: var(--white);
}

.btn-outline-premium {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-premium:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* ========== PREMIUM CARDS ========== */
.card-premium {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(0,0,0,0.05);
}

.card-premium:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.card-premium-image {
    position: relative;
    overflow: hidden;
    height: 280px;
}

.card-premium-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card-premium:hover .card-premium-image img {
    transform: scale(1.1);
}

.card-premium-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-sunset);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.card-premium-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    padding: 2rem 1.5rem 1rem;
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.card-premium:hover .card-premium-overlay {
    transform: translateY(0);
}

.card-premium-body {
    padding: 1.5rem;
}

.card-premium-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.card-premium-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.card-premium-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.card-premium-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.card-premium-feature i {
    color: var(--primary-color);
    font-size: 1rem;
}

.card-premium-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(0,0,0,0.08);
}

.card-premium-price {
    display: flex;
    flex-direction: column;
}

.card-premium-price-amount {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.card-premium-price-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

.card-premium-price-old {
    font-size: 1rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: 0.5rem;
}

/* ========== HERO SECTIONS ========== */
.hero-premium {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: bottom;
}

.hero-premium-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: 2rem;
}

.hero-premium-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
    text-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.hero-premium-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    margin-bottom: 2rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.6;
}

.hero-premium-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== SEARCH BAR PREMIUM ========== */
.search-bar-premium {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    margin-top: -4rem;
    position: relative;
    z-index: 10;
}

.search-bar-premium .form-control {
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: var(--radius-md);
    padding: 0.875rem 1rem;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.search-bar-premium .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.1);
    outline: none;
}

.search-bar-premium .btn {
    padding: 0.875rem 2.5rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}

/* ========== SECTION HEADERS ========== */
.section-premium {
    padding: var(--spacing-2xl) 0;
}

.section-header-premium {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header-premium .badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-header-premium h2 {
    margin-bottom: 1rem;
}

.section-header-premium p {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* ========== STATS SECTION ========== */
.stats-premium {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    padding: 3rem 0;
}

.stat-item-premium {
    text-align: center;
}

.stat-item-premium .icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--gradient-ocean);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.stat-item-premium .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-item-premium .label {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ========== TESTIMONIALS ========== */
.testimonial-premium {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
}

.testimonial-premium::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 6rem;
    color: var(--primary-light);
    opacity: 0.2;
    font-family: Georgia, serif;
}

.testimonial-premium-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.testimonial-premium-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-premium-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-premium-info h5 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.testimonial-premium-info p {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
}

.testimonial-premium-rating {
    color: var(--accent-gold);
    margin-top: 0.5rem;
}

/* ========== FILTERS PREMIUM ========== */
.filters-premium {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.filter-group-premium {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.filter-group-premium label {
    font-weight: 600;
    color: var(--text-primary);
    margin-right: 0.5rem;
}

.filter-group-premium select,
.filter-group-premium input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem 1rem;
    border: 2px solid rgba(0,0,0,0.08);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

.filter-group-premium select:focus,
.filter-group-premium input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.1);
}

/* ========== BADGES & TAGS ========== */
.badge-premium {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
}

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

.badge-premium-warning {
    background: var(--gradient-sunset);
    color: var(--white);
}

.badge-premium-info {
    background: var(--gradient-ocean);
    color: var(--white);
}

/* ========== LOADING STATES ========== */
.skeleton-premium {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .hero-premium {
        min-height: 500px;
    }
    
    .search-bar-premium {
        padding: 1.5rem;
        margin-top: -3rem;
    }
    
    .section-premium {
        padding: var(--spacing-xl) 0;
    }
    
    .card-premium-image {
        height: 220px;
    }
    
    .stats-premium {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-premium {
        grid-template-columns: 1fr;
    }
    
    .hero-premium-actions {
        flex-direction: column;
    }
    
    .btn-premium {
        width: 100%;
    }
}