:root {
  --bg: #0e1012;
  --surface: #161a1e;
  --border: #252b30;
  --text: #c8d0d8;
  --muted: #6a7480;
  --accent: #4d8c72;
  --accent-dim: #1e3a2f;
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'Cascadia Code', 'Courier New', monospace;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* ── Header ── */

header {
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 0;
}

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

.site-id {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

nav a {
  font-size: 0.85rem;
  color: var(--muted);
  margin-left: 1.5rem;
}

nav a:hover {
  color: var(--text);
  text-decoration: none;
}

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

/* ── Main ── */

main {
  flex: 1;
  padding: 3rem 0 4rem;
}

/* ── Identity block ── */

.identity {
  margin-bottom: 3.5rem;
}

.identity h1 {
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 0.2rem;
  color: var(--text);
}

.role {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.bio {
  color: var(--muted);
  max-width: 460px;
  font-size: 0.9rem;
}

/* ── Section headers ── */

.section-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

section {
  margin-bottom: 3rem;
}

/* ── Home project list ── */

.project-list {
  list-style: none;
}

.project-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.project-list .project-name {
  font-size: 0.9rem;
}

.project-list .project-meta {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
}

.project-list .all-link {
  padding: 0.7rem 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.project-list .all-link a:hover {
  color: var(--text);
}

/* ── Contact ── */

.contact p {
  font-size: 0.9rem;
}

/* ── Projects page ── */

.page-title {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.page-desc {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
  max-width: 440px;
}

.project-card {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}

.project-card:first-of-type {
  border-top: 1px solid var(--border);
}

.project-card h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.project-card p {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.6rem;
  max-width: 500px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
}

/* ── Placeholder pages ── */

.placeholder-warning {
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  color: var(--text);
  margin-bottom: 2rem;
  line-height: 1.5;
}

.placeholder-warning strong {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.placeholder-body {
  font-size: 0.875rem;
  color: var(--muted);
}

/* ── Back link ── */

.back {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.back:hover {
  color: var(--text);
  text-decoration: none;
}

/* ── Footer ── */

footer {
  border-top: 1px solid var(--border);
  padding: 1.1rem 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

/* ── Responsive ── */

@media (max-width: 600px) {
  .project-list li {
    flex-direction: column;
    gap: 0.2rem;
  }
  .project-list .project-meta {
    text-align: left;
  }
}