/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.site-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.site-description {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Main Content */
.main {
    padding: 2rem 0;
}

/* Search Section */
.search-section {
    margin-bottom: 2rem;
}

.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: 0.5rem;
}

.search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
}

.search-btn {
    padding: 0.75rem 1.5rem;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-btn:hover {
    background: #5a67d8;
}

/* Filter Section */
.filter-section {
    margin-bottom: 2rem;
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.tag-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #e9ecef;
    background: white;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tag-btn:hover,
.tag-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* Sites Grid */
.sites-section {
    margin-bottom: 2rem;
}

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Site Card */
.site-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.site-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.site-header {
    margin-bottom: 1rem;
}

.site-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.site-name a {
    color: #2d3748;
    text-decoration: none;
    transition: color 0.3s ease;
}

.site-name a:hover {
    color: #667eea;
}

.site-name .disabled {
    color: #a0aec0;
}

.site-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.tag {
    background: #e2e8f0;
    color: #4a5568;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.site-desc {
    color: #718096;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.site-actions {
    display: flex;
    justify-content: flex-end;
}

.visit-btn {
    background: #667eea;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.visit-btn:hover {
    background: #5a67d8;
}

.disabled-btn {
    background: #e2e8f0;
    color: #a0aec0;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
}

.footer p {
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-title {
        font-size: 2rem;
    }
    
    .site-description {
        font-size: 1rem;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .search-btn {
        width: 100%;
    }
    
    .filter-tags {
        justify-content: flex-start;
    }
    
    .sites-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .container {
        padding: 0 12px;
    }
    
    .main {
        padding: 1.5rem 0;
    }
}

@media (max-width: 480px) {
    .site-title {
        font-size: 1.8rem;
    }
    
    .header {
        padding: 1.5rem 0;
    }
    
    .site-card {
        padding: 1rem;
    }
    
    .tag-btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.site-card {
    animation: fadeIn 0.5s ease-out;
}

/* Print Styles */
@media print {
    .search-section,
    .filter-section {
        display: none;
    }
    
    .site-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #e2e8f0;
    }
}