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

:root {
    --primary-color: #1e4d2b;
    --secondary-color: #4a7c59;
    --accent-color: #87ceeb;
    --background-color: #f5f5f5;
    --card-background: #ffffff;
    --text-color: #333333;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

h1 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

nav {
    display: flex;
    justify-content: space-around;
    gap: 0.5rem;
}

.nav-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    flex: 1;
}

.nav-btn.active,
.nav-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

main {
    padding: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.day-card, .hike-card, .packing-card {
    background: var(--card-background);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.day-card:hover, .hike-card:hover, .packing-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

h3 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

h4 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
}

ul {
    list-style-position: inside;
    margin-left: 0.5rem;
}

li {
    margin-bottom: 0.3rem;
}

.difficulty {
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.sun-times-bottom {
    font-size: 0.85rem;
    color: #666;
    font-weight: 400;
    margin: 0.75rem 0 0.5rem 0;
    text-align: center;
}

.weather-links {
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(0,0,0,0.08);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.weather-links a {
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    background: rgba(74, 124, 89, 0.1);
    transition: all 0.3s ease;
}

.weather-links a:hover {
    background: var(--secondary-color);
    color: white;
}

.location-card {
    background: var(--card-background);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.location-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

#mapContainer {
    height: 400px;
    width: 100%;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.location-buttons {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.map-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
    flex: 1;
    min-width: 120px;
}

.map-btn:hover {
    background: var(--secondary-color);
}

.focus-btn {
    background: var(--secondary-color);
}

.external-btn {
    background: var(--accent-color);
}

/* Mobile optimizations */
@media (max-width: 600px) {
    header {
        padding: 0.8rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .nav-btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    main {
        padding: 0.8rem;
    }
    
    .day-card, .hike-card, .packing-card, .location-card {
        padding: 1rem;
    }
    
    #mapContainer {
        height: 300px;
    }
    
    .location-buttons {
        flex-direction: column;
    }
    
    .map-btn {
        width: 100%;
    }
    
    
    .weather-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Landscape mode adjustments */
@media (orientation: landscape) and (max-height: 600px) {
    header {
        position: relative;
    }
    
    h1 {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --card-background: #2a2a2a;
        --text-color: #e0e0e0;
    }
    
    .nav-btn {
        background: rgba(255,255,255,0.1);
    }
    
    .nav-btn.active,
    .nav-btn:hover {
        background: rgba(255,255,255,0.2);
    }
}