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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #16213e;
    --bg-card: rgba(22, 33, 62, 0.8);
    --bg-card-hover: rgba(26, 31, 77, 0.9);
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --accent: #00f5ff;
    --accent-hover: #00b4ff;
    --accent-gradient: linear-gradient(135deg, #00f5ff 0%, #00b4ff 100%);
    --border-gradient: linear-gradient(135deg, #00f5ff 0%, transparent 100%);
    --border: rgba(0, 245, 255, 0.1);
    --border-hover: rgba(0, 245, 255, 0.3);
    --success: #4ecdc4;
    --warning: #f1c40f;
    --error: #e74c3c;
    --glass-bg: rgba(22, 33, 62, 0.6);
    --glass-border: rgba(0, 245, 255, 0.15);
    --glow-normal: 0 0 30px rgba(0, 245, 255, 0.1);
    --glow-hover: 0 0 40px rgba(0, 245, 255, 0.3);
    
    --category-development: #00f5ff;
    --category-ai-exploration: #7c4dff;
    --category-hardware: #ff75ff;
    --category-frontend: #5ee7ff;
    --category-backend: #47b883;
    --category-fullstack: #00f5d4;
    --category-showcase: #10ac84;
    --category-learning: #00cec9;
    --category-other: #9aa0a6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    background: radial-gradient(ellipse at top, #0a0e27 0%, #16213e 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 20px 0;
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--glow-normal);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    text-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
    letter-spacing: 1px;
}

nav {
    display: flex;
    gap: 20px;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
}

nav a:hover {
    color: var(--accent);
    background: rgba(0, 245, 255, 0.1);
}

nav a.active {
    color: var(--accent);
    background: rgba(0, 245, 255, 0.15);
    box-shadow: var(--glow-normal);
}

.btn {
    padding: 10px 24px;
    border: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #0a0e27;
    box-shadow: var(--glow-hover);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(0, 245, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
    box-shadow: var(--glow-normal);
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(231, 76, 60, 0.3);
}

.btn-sm {
    padding: 6px 16px;
    font-size: 12px;
}

main {
    padding: 60px 0;
}

.page-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 0 30px rgba(0, 245, 255, 0.2);
}

.page-description {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 40px;
}

.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
    padding: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.category-btn {
    padding: 8px 20px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--glass-bg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
}

.category-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: var(--glow-normal);
}

.category-btn.active {
    background: var(--accent-gradient);
    color: #0a0e27;
    border-color: transparent;
    box-shadow: var(--glow-hover);
    transform: scale(1.05);
}

.category-btn[data-category="development"].active { background: var(--category-development); }
.category-btn[data-category="ai-exploration"].active { background: var(--category-ai-exploration); }
.category-btn[data-category="hardware"].active { background: var(--category-hardware); }
.category-btn[data-category="frontend"].active { background: var(--category-frontend); }
.category-btn[data-category="backend"].active { background: var(--category-backend); }
.category-btn[data-category="fullstack"].active { background: var(--category-fullstack); }
.category-btn[data-category="showcase"].active { background: var(--category-showcase); }
.category-btn[data-category="learning"].active { background: var(--category-learning); }
.category-btn[data-category="other"].active { background: var(--category-other); }

.category-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 13px;
}

.stat-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    box-shadow: 0 0 10px currentColor;
}

.stat-dot.development { background: var(--category-development); color: var(--category-development); }
.stat-dot.ai-exploration { background: var(--category-ai-exploration); color: var(--category-ai-exploration); }
.stat-dot.hardware { background: var(--category-hardware); color: var(--category-hardware); }
.stat-dot.frontend { background: var(--category-frontend); color: var(--category-frontend); }
.stat-dot.backend { background: var(--category-backend); color: var(--category-backend); }
.stat-dot.fullstack { background: var(--category-fullstack); color: var(--category-fullstack); }
.stat-dot.showcase { background: var(--category-showcase); color: var(--category-showcase); }
.stat-dot.learning { background: var(--category-learning); color: var(--category-learning); }
.stat-dot.other { background: var(--category-other); color: var(--category-other); }

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus, 
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--glow-normal);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300f5ff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 24px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glow-normal);
}

.websites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.website-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: var(--glow-normal);
}

.website-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--glow-hover);
    border-color: var(--accent-hover);
}

.website-thumbnail {
    width: 100%;
    height: 200px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
    overflow: hidden;
    position: relative;
}

.website-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.website-info {
    padding: 20px;
}

.website-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.website-description {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.website-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.category-tag {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    color: #0a0e27;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-development { background: var(--category-development); }
.category-ai-exploration { background: var(--category-ai-exploration); }
.category-hardware { background: var(--category-hardware); }
.category-frontend { background: var(--category-frontend); }
.category-backend { background: var(--category-backend); }
.category-fullstack { background: var(--category-fullstack); }
.category-showcase { background: var(--category-showcase); }
.category-learning { background: var(--category-learning); }
.category-other { background: var(--category-other); }

.website-date {
    color: var(--text-secondary);
    font-size: 12px;
}

.website-actions {
    margin-top: 16px;
    display: flex;
    gap: 8px;
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    box-shadow: var(--glow-normal);
}

.upload-area.drag-over {
    border-color: var(--accent);
    background: rgba(0, 245, 255, 0.1);
    box-shadow: var(--glow-hover);
}

.upload-area input[type="file"] {
    display: none;
}

.upload-icon {
    font-size: 48px;
    color: var(--accent);
    margin-bottom: 16px;
    filter: drop-shadow(0 0 10px var(--accent));
}

.upload-text {
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 18px;
    font-weight: 500;
}

.upload-hint {
    color: var(--text-secondary);
    font-size: 14px;
    opacity: 0.7;
}

.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 20px;
    color: var(--accent);
    filter: drop-shadow(0 0 20px var(--accent));
}

.empty-state-text {
    color: var(--text-secondary);
    font-size: 18px;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.alert-success {
    background: rgba(78, 205, 196, 0.15);
    color: var(--success);
    border: 1px solid rgba(78, 205, 196, 0.3);
}

.alert-error {
    background: rgba(231, 76, 60, 0.15);
    color: var(--error);
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading-pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

footer {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 40px 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 60px;
}

@media (max-width: 1024px) {
    .websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 32px;
    }
    
    .page-description {
        font-size: 16px;
    }
    
    .websites-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    header .container {
        flex-direction: column;
        gap: 16px;
    }
    
    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    
    nav a {
        padding: 6px 12px;
        font-size: 14px;
    }
    
    .category-filter {
        padding: 16px;
    }
    
    .category-btn {
        padding: 6px 14px;
        font-size: 13px;
    }
    
    .category-stats {
        gap: 16px;
    }
    
    main {
        padding: 40px 0;
    }
    
    .upload-area {
        padding: 40px 20px;
    }
    
    .card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .btn {
        padding: 8px 20px;
        font-size: 13px;
    }
    
    .website-thumbnail {
        height: 160px;
    }
}