/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0a0a0b;
    --bg-card: #141416;
    --text: #e4e4e7;
    --text-muted: #a1a1aa;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --border: #27272a;
    --radius: 8px;
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { line-height: 1.2; }
a { color: var(--accent); text-decoration: none; }

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}
.btn-nav {
    padding: 8px 20px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius);
}
.btn-nav:hover { background: var(--accent-hover); }

/* ===== Nav ===== */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.nav-logo span { color: var(--accent); }
.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}
.nav-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: 0.2s;
}

/* ===== Hero ===== */
.hero {
    padding: 140px 0 60px;
    text-align: center;
}
.hero-tag {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
}
.hero-sub {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto;
}

/* ===== Projects ===== */
.projects { padding: 60px 0 100px; }
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.project-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
    color: var(--text);
    text-decoration: none;
}
.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}
.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}
.project-info { padding: 24px; }
.project-info h3 { margin-bottom: 8px; font-size: 1.1rem; }
.project-info p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.project-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.project-tags span {
    background: var(--bg);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-content p { color: var(--text-muted); font-size: 0.85rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-muted); font-size: 0.85rem; }
.footer-links a:hover { color: var(--text); }

/* ===== Mobile ===== */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 24px;
        gap: 20px;
    }
    .nav-toggle { display: flex; }
    .hero { padding: 100px 0 40px; }
    .hero h1 { font-size: 1.8rem; }
    .projects-grid { grid-template-columns: 1fr; }
    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}