:root {
    --primary-color: #2c3e50;
    --accent-color: #e67e22;
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-color: #333;
    --nav-height: 60px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding-bottom: calc(var(--nav-height) + 20px);
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.container {
    padding: 15px;
    max-width: 600px;
    margin: 0 auto;
}

.tour-card {
    background: var(--card-bg);
    border-radius: 12px;
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    position: relative;
    transition: transform 0.2s;
}

.tour-card.sponsored {
    border: 2px solid var(--accent-color);
}

.sponsored-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent-color);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: bold;
    text-transform: uppercase;
}

.tour-image {
    width: 100%;
    height: 180px;
    background: #ddd;
    object-fit: cover;
}

.tour-content {
    padding: 15px;
}

.tour-operator {
    font-size: 0.8rem;
    color: #7f8c8d;
    margin-bottom: 5px;
}

.tour-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.tour-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tour-price {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 800;
}

.compare-btn {
    background: #eee;
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
}

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

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-item {
    text-decoration: none;
    color: #7f8c8d;
    font-size: 0.75rem;
    text-align: center;
    flex: 1;
}

.nav-item.active {
    color: var(--primary-color);
    font-weight: bold;
}

.nav-icon {
    display: block;
    font-size: 1.4rem;
    margin-bottom: 2px;
}