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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem 0;
    text-align: center;
    color: white;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.title i {
    margin-right: 0.5rem;
    color: #ffd700;
}

.subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    backdrop-filter: blur(5px);
}

/* Navigation */
.navigation {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.nav-link:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-1px);
}

.nav-link i {
    font-size: 1.1rem;
}

/* Main content */
.main {
    padding: 2rem 0;
    flex: 1;
}



/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn:hover {
    background: #e9ecef;
    transform: translateY(-1px);
}

.tab-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-controls label {
    font-weight: 500;
    color: #666;
}

#sort-select {
    padding: 0.5rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    background: white;
    font-size: 0.9rem;
    cursor: pointer;
}

/* Search box */
.search-box {
    position: relative;
    margin-bottom: 2rem;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

#search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1rem;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: border-color 0.3s ease;
}

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

/* Items grid */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.item-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.item-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.item-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.item-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.25rem;
    word-break: break-word;
}

.item-type {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    white-space: nowrap;
}

.item-type.github {
    background: #f6f8fa;
    color: #24292f;
}

.item-type.huggingface {
    background: #fff3cd;
    color: #856404;
}

.item-description {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: #666;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.item-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: #666;
}

.item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background: #f1f3f4;
    color: #5f6368;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.item-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border: 2px solid #667eea;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.item-link:hover {
    background: #667eea;
    color: white;
    transform: translateY(-1px);
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem 0;
    text-align: center;
    color: white;
    margin-top: 3rem;
}

.footer a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
    transition: opacity 0.3s ease;
}

.footer a:hover {
    opacity: 0.8;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header {
        padding: 1.5rem 0;
    }
    
    .title {
        font-size: 1.8rem;
        margin-bottom: 0.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .stats {
        gap: 0.75rem;
        flex-direction: column;
        align-items: center;
    }
    
    .stat {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }
    
    .nav-links {
        gap: 1rem;
        justify-content: center;
    }
    
    .nav-link {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        gap: 1rem;
    }
    
    .filter-tabs {
        justify-content: center;
        gap: 0.25rem;
    }
    
    .tab-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        flex: 1;
        min-width: 0;
    }
    
    .sort-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .items-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .item-card {
        padding: 1.25rem;
    }
    
    .item-title {
        font-size: 1.1rem;
    }
    
    .item-meta {
        gap: 0.5rem;
        font-size: 0.8rem;
    }
    
    .item-stats {
        gap: 0.5rem;
        font-size: 0.8rem;
    }
    
    .footer {
        padding: 1.5rem 0;
    }
    
    .footer a {
        margin: 0 0.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.6rem;
    }
    
    .subtitle {
        font-size: 0.95rem;
    }
    
    .nav-links {
        gap: 0.5rem;
        flex-direction: column;
        align-items: center;
    }
    
    .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
        width: 200px;
        justify-content: center;
    }
    
    .controls {
        padding: 0.75rem;
    }
    
    .tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .item-card {
        padding: 1rem;
    }
    
    .item-title {
        font-size: 1rem;
    }
    
    #search-input {
        font-size: 0.95rem;
        padding: 0.9rem 0.9rem 0.9rem 2.75rem;
    }
}

/* Loading and empty states */
.loading {
    text-align: center;
    padding: 3rem;
    color: white;
    font-size: 1.1rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: white;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}

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

.item-card {
    animation: fadeIn 0.5s ease forwards;
}