/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

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

/* Header */
header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo h1 {
    font-size: 1.8rem;
    color: #2563eb;
}

nav {
    display: flex;
    gap: 2rem;
    margin-left: auto;
}

nav a {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover {
    color: #2563eb;
}

/* Hero section */
.hero {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    margin: 2rem 0;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

#searchInput {
    flex: 1;
    padding: 15px 20px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#searchBtn {
    padding: 15px 30px;
    background: #10b981;
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

#searchBtn:hover {
    background: #059669;
}

/* Filters */
.filters {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.filter-group {
    flex: 1;
}

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #4b5563;
}

.filter-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.stat-card h3 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: #6b7280;
    font-size: 0.9rem;
}

/* Expos grid */
.expos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.expo-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.expo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.expo-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.expo-header h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.expo-location {
    font-size: 0.9rem;
    opacity: 0.9;
}

.expo-body {
    padding: 1.5rem;
}

.expo-dates {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.expo-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.expo-stat {
    text-align: center;
}

.expo-stat .number {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2563eb;
}

.expo-stat .label {
    font-size: 0.8rem;
    color: #6b7280;
}

.expo-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.category-tag {
    background: #e0f2fe;
    color: #0369a1;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.expo-footer {
    padding: 1rem 1.5rem;
    background: #f9fafb;
    border-top: 1px solid #e5e7eb;
}

.view-btn {
    display: block;
    width: 100%;
    padding: 0.8rem;
    background: #10b981;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    text-align: center;
    text-decoration: none;
}

.view-btn:hover {
    background: #059669;
}

/* Loading state */
.loading {
    text-align: center;
    padding: 3rem;
    grid-column: 1 / -1;
    color: #6b7280;
    font-size: 1.1rem;
}

/* Footer */
footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
}

footer p {
    text-align: center;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .filters {
        flex-direction: column;
        gap: 1rem;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    #searchInput, #searchBtn {
        width: 100%;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    nav {
        margin-top: 1rem;
        justify-content: center;
    }
}