:root {
    --bg: #0a0a0a;
    --surface: #141414;
    --border: #242424;
    --text: #e4e4e4;
    --text-dim: #888;
    --accent: #64ffda;
    --max-width: 720px;
    --spacing: 2rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

nav {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
}

.nav-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-tabs {
    display: flex;
    gap: 2rem;
}

.nav-tab {
    color: var(--text-dim);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    position: relative;
}

.nav-tab:hover {
    color: var(--text);
}

.nav-tab.active {
    color: var(--text);
}

.nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2rem;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--accent);
}

.hero {
    padding: 6rem 0 4rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.hero h1 span {
    color: var(--accent);
}

.about-content {
    font-size: 1.25rem;
    color: var(--text-dim);
    max-width: 600px;
    line-height: 1.8;
}

.about-content p {
    margin-bottom: 1rem;
}

.projects {
    padding: 4rem 0 6rem;
}

.projects h2 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: border-color 0.2s ease;
}

.project-card:hover {
    border-color: var(--accent);
}

.project-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    color: var(--text);
}

.project-content {
    color: var(--text-dim);
    line-height: 1.7;
}

.project-content p {
    margin-bottom: 0.75rem;
}

footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.875rem;
}

.loading {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 0;
}

.loading-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 1.4s ease-in-out infinite both;
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }
.loading-dot:nth-child(3) { animation-delay: 0s; }

@keyframes pulse {
    0%, 80%, 100% {
        opacity: 0.2;
        transform: scale(0.8);
    }
    40% {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero {
        padding: 4rem 0 3rem;
    }
    
    .projects {
        padding: 3rem 0 4rem;
    }
    
    .bento-grid {
        grid-template-columns: 1fr;
    }
}