:root {
    --primary-blue: #0066CC;
    --primary-orange: #FF6B35;
    --warning-yellow: #FFC107;
    --dark: #1A1A2E;
    --gray-700: #495057;
    --gray-400: #ADB5BD;
    --gray-100: #F8F9FA;
    --white: #FFFFFF;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
    --border-radius: 12px;
    --border-radius-lg: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Header */
.navbar-main {
    z-index: 1030;
}

.navbar-main .navbar-brand .logo-icon {
    font-size: 2rem;
    color: var(--primary-blue);
}

.navbar-main .nav-link {
    color: var(--dark) !important;
    padding: 0.75rem 1rem !important;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-main .nav-link:hover {
    color: var(--primary-blue) !important;
}

.navbar-main .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.navbar-main .nav-link:hover::after {
    width: 80%;
}

.dropdown-menu {
    border: none;
    border-radius: var(--border-radius);
    padding: 0.5rem 0;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--gray-100);
    padding-left: 2rem;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1436491865332-7a61a109cc05?w=1200') center/cover;
    opacity: 0.2;
    z-index: 0;
}

.hero-section .container {
    z-index: 1;
}

.min-vh-70 {
    min-height: 70vh;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
}

.hero-search-widget {
    animation: fadeInUp 0.8s ease-out;
}

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

/* Travel Alert */
.travel-alert {
    padding: 1rem 0;
    border-radius: 0;
    border: none;
}

.travel-alert.alert-warning {
    background: linear-gradient(135deg, #FFC107 0%, #FF9800 100%);
    color: #1A1A2E;
}

.travel-alert.alert-danger {
    background: linear-gradient(135deg, #DC3545 0%, #C82333 100%);
    color: white;
}

.travel-alert.alert-info {
    background: linear-gradient(135deg, #17A2B8 0%, #138496 100%);
    color: white;
}

.alert-icon {
    font-size: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.alert-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.alert-text {
    font-size: 0.95rem;
    opacity: 0.95;
}

/* Promo Cards */
.promo-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(0,0,0,0.05);
}

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

.promo-image-wrapper {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.promo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.promo-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-orange));
}

.promo-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 2;
}

.promo-content {
    padding: 1.5rem;
}

.promo-title {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.promo-description {
    color: var(--gray-700);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.promo-discount {
    margin-bottom: 1rem;
}

.discount-badge {
    font-weight: 700;
    font-size: 0.875rem;
    display: inline-block;
}

.promo-footer {
    border-top: 1px solid var(--gray-100);
    padding-top: 1rem;
}

/* Flight Results */
.flight-result-card {
    transition: all 0.3s ease;
}

.flight-result-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md) !important;
}

.route-line-visual {
    height: 3px;
    background: linear-gradient(to right, var(--primary-blue), var(--primary-orange));
    position: relative;
    margin: 10px 0;
}

.route-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-blue);
    border: 3px solid white;
    box-shadow: 0 0 0 2px var(--primary-blue);
    top: 50%;
    transform: translateY(-50%);
}

.route-dot-start {
    left: 0;
}

.route-dot-end {
    right: 0;
    background: var(--primary-orange);
    box-shadow: 0 0 0 2px var(--primary-orange);
}

.route-icon {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 5px;
    color: var(--primary-blue);
    font-size: 1.2rem;
}

.flight-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-100);
}

.detail-item {
    display: flex;
    align-items: center;
}

.filter-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.filter-section {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-100);
}

.filter-section:last-child {
    border-bottom: none;
}

/* Search Page Hero */
.search-page-hero {
    background: linear-gradient(135deg, #FFC107 0%, #FF9800 100%);
    padding: 60px 0;
    margin-bottom: 40px;
}

/* Footer */
.footer-main {
    background: linear-gradient(180deg, #1A1A2E 0%, #0F0F1E 100%);
}

.footer-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-link:hover {
    color: var(--primary-orange);
    padding-left: 5px;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-3px);
}

/* Destination Cards */
.destination-card {
    transition: all 0.3s ease;
}

.destination-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .min-vh-70 {
        min-height: 50vh;
    }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Button animations */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}