:root {
    --primary: #4A90E2;
    --secondary: #2C3E50;
    --accent: #E74C3C;
    --bg: #F5F7FA;
    --text: #333;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

header {
    background-color: var(--secondary);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container, .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 2px;
}

.logo span {
    color: var(--primary);
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: var(--primary);
}

.hero {
    background: linear-gradient(135deg, var(--secondary), #1a252f);
    color: white;
    text-align: center;
    padding: 100px 20px;
}

.hero h1 { font-size: 3rem; margin-bottom: 20px; }
.hero p { font-size: 1.2rem; margin-bottom: 30px; opacity: 0.8; }

.btn {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s, transform 0.1s;
}

.btn:hover { background-color: #357ABD; }
.btn:active { transform: scale(0.98); }

/* Destinations Grid */
.filter-bar {
    margin: 30px 0;
    display: flex;
    gap: 10px;
}

.filter-btn {
    background: white;
    border: 1px solid #ddd;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 20px;
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.tag {
    display: inline-block;
    background: var(--bg);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-bottom: 10px;
    color: var(--secondary);
}

/* Booking Form */
.booking-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

input[type="text"], input[type="email"], select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.radio-group label, .form-group label:has(input[type="checkbox"]) {
    font-weight: normal;
    display: block;
    margin-bottom: 5px;
}

.booking-summary {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.summary-row.total {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
}

.newsletter {
    text-align: center;
    padding: 60px 20px;
    background: white;
}

.hidden { display: none; }