:root {
  --bg:           #0f172a;
  --surface:      #1e293b;
  --border:       #334155;
  --text:         #f1f5f9;
  --muted:        #94a3b8;
  --accent:       #818cf8;
  --accent-deep:  #6366f1;
  --accent-hover: #4f46e5;
  --glow:         0 0 0 3px rgba(129, 140, 248, 0.25);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding: 0 1.5rem 4rem;
}

/* ── Layout ── */
.container {
  max-width: 860px;
  margin: 0 auto;
}

/* ── Header ── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
  margin-bottom: 4rem;
}

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

.logo {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-decoration: none;
}

.header-links {
  display: flex;
  gap: 1.5rem;
}

.header-links a {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.header-links a:hover { color: var(--text); }

/* ── Hero ── */
.hero {
  margin-bottom: 4rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  background: linear-gradient(90deg, #c4b5fd 0%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
}

.hero .tagline {
  color: var(--muted);
  font-size: 1rem;
  max-width: 540px;
}

.hero .tagline a {
  color: var(--accent);
  text-decoration: none;
}

.hero .tagline a:hover { text-decoration: underline; }

/* ── Section ── */
.section-label {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* ── Project cards ── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.6rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.project-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.project-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.project-tag {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.68rem;
  color: var(--accent);
  background: rgba(129, 140, 248, 0.1);
  border: 1px solid rgba(129, 140, 248, 0.25);
  border-radius: 4px;
  padding: 0.15em 0.5em;
  letter-spacing: 0.04em;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.project-link {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.78rem;
  color: var(--accent-deep);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

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

/* ── Footer ── */
.site-footer {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.site-footer p {
  font-family: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.75rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover { text-decoration: underline; }

/* ── Responsive ── */
@media (max-width: 480px) {
  .project-grid { grid-template-columns: 1fr; }
  .header-links { display: none; }
}