:root {
    --primary-blue: #005aab;
    --primary-dark: #003d75;
    --gold: #f7e180;
    --gold-dark: #d4b85a;
    --text-dark: #333;
    --text-light: #666;
    --bg-light: #f5f5f5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--primary-blue);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.navbar {
    padding: 0;
}

.navbar-brand img {
    filter: brightness(1.1);
}

.navbar-toggler {
    border-color: rgba(255,255,255,0.5);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.nav-link {
    color: white !important;
    font-weight: 500;
    padding: 1rem 1.2rem !important;
    transition: background 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(0,90,171,0.85) 0%, rgba(0,61,117,0.9) 100%),
                url('images/hero-plane.jpg') center/cover no-repeat;
    padding: 4rem 0;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.booking-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.booking-card h2 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

#bookingTabs {
    border-bottom: 2px solid #eee;
}

#bookingTabs .nav-link {
    color: var(--text-light) !important;
    border: none;
    padding: 0.75rem 1.5rem !important;
    font-weight: 600;
}

#bookingTabs .nav-link.active {
    color: var(--primary-blue) !important;
    border-bottom: 3px solid var(--primary-blue);
    background: none;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.3rem;
}

.form-control, .form-select {
    border: 2px solid #ddd;
    padding: 0.75rem;
    border-radius: 8px;
    transition: border-color 0.3s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0,90,171,0.1);
}

.btn-primary {
    background: var(--primary-blue);
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 8px;
    transition: background 0.3s, transform 0.2s;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline-primary {
    color: var(--primary-blue);
    border-color: var(--primary-blue);
    font-weight: 600;
}

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

/* Offers Section */
.offers {
    background: white;
}

.section-title {
    text-align: center;
    color: var(--primary-blue);
    font-weight: 700;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.offer-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.offer-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.offer-image {
    height: 180px;
    position: relative;
    overflow: hidden;
    background: var(--primary-blue);
}

.offer-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.offer-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--gold);
    color: var(--primary-dark);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.offer-content {
    padding: 1.5rem;
}

.offer-content h3 {
    color: var(--primary-blue);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.offer-route {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.offer-price {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.offer-price strong {
    color: var(--primary-blue);
    font-size: 1.5rem;
}

/* Info Section */
.info-section {
    background: var(--bg-light);
}

.info-box {
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.info-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.info-box h4 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.info-box p {
    color: var(--text-light);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: var(--gold);
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--gold);
}

.footer hr {
    border-color: rgba(255,255,255,0.2);
    margin: 2rem 0 1rem;
}

.footer p {
    margin: 0;
    color: rgba(255,255,255,0.7);
}

/* Page Header for Inner Pages */
.page-header {
    background: linear-gradient(135deg, rgba(0,90,171,0.9) 0%, rgba(0,61,117,0.95) 100%),
                url('images/hero-plane.jpg') center/cover no-repeat;
    padding: 4rem 0;
    color: white;
    text-align: center;
}

.page-header h1 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-content {
    padding: 3rem 0;
}

/* Simple Cards for Inner Pages */
.simple-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
}

.simple-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* Success/Confirmation Page */
.confirmation {
    text-align: center;
    padding: 4rem 0;
}

.confirmation-icon {
    font-size: 5rem;
    color: #28a745;
    margin-bottom: 1rem;
}

.confirmation h2 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

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

    .booking-card {
        padding: 1.5rem;
    }

    .offer-card {
        margin-bottom: 1rem;
    }
}