:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-orange: #f0883e;
    --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", monospace;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-heading);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 60px;
}

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.labs-badge {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.1);
    padding: 2px 8px;
    border-radius: 12px;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent-blue);
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 16px;
    background: linear-gradient(180deg, #fff, #8b949e);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Background Pattern */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: radial-gradient(#30363d 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
    z-index: -1;
    mask-image: radial-gradient(circle at center, black 0%, transparent 70%);
    animation: drift 60s linear infinite;
}

@keyframes drift {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Projects Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 100px;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border-color: var(--accent-blue);
}

.card-image {
    aspect-ratio: 1 / 1;
    width: 100%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.project-card:hover .card-image img {
    opacity: 1;
    object-fit: contain;
}

.card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-header {
    margin-bottom: 12px;
}

.card-header h2 {
    font-size: 1.5rem;
    margin-top: 12px;
}

.badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-rnd {
    background: rgba(240, 136, 62, 0.15);
    color: var(--accent-orange);
    border: 1px solid rgba(240, 136, 62, 0.3);
}

.badge-free {
    background: rgba(63, 185, 80, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(63, 185, 80, 0.3);
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    flex: 1;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.status-live {
    color: var(--accent-green);
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    color: var(--accent-blue);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn:hover {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.site-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px dotted var(--text-secondary);
}

.site-footer a:hover {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
}