:root {
  --bg: #0d0d0d;
  --surface: #141414;
  --border: #222;
  --accent: #37de8a;
  --accent-dim: rgba(55,222,138,0.12);
  --text: #e8e8e8;
  --muted: #555;
  --card-bg: #111;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  min-height: 100vh;
  padding: 0 0 80px;
  overflow-x: hidden;
}

/* ── Header ── */
header {
  position: relative;
  padding: 72px 48px 56px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: -120px; left: -80px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(55,222,138,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 300;
  line-height: 1.1;
  color: #fff;
  max-width: 640px;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.meta {
  margin-top: 20px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.meta span::before {
  content: '// ';
  color: var(--border);
}

/* ── Grid ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 480px), 1fr));
  gap: 1px;
  background: var(--border);
  margin: 0;
}

/* ── Card ── */
.card {
  background: var(--card-bg);
  padding: 40px;
  position: relative;
  transition: background 0.2s;
}

.card:hover { background: #161616; }

.card-number {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 28px;
}

.card-title {
  font-family: 'Fraunces', serif;
  font-size: 1.35rem;
  font-weight: 300;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 8px;
}

.card-issuer {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 28px;
}

/* Skills */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 32px;
}

.skill-tag {
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 2px;
}

/* Credential ID block */
.credential-block {
  background: #0a0a0a;
  border: 1px solid var(--border);
  padding: 16px 18px;
  margin-bottom: 20px;
  border-radius: 4px;
}

.credential-label {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.credential-id {
  font-size: 13px;
  color: var(--accent);
  word-break: break-all;
  line-height: 1.5;
}

/* CTA */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid rgba(55,222,138,0.3);
  padding: 10px 20px;
  border-radius: 2px;
  transition: background 0.15s, border-color 0.15s;
}

.cta:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
}

.cta svg { flex-shrink: 0; }

/* Under construction card */
.card.wip { opacity: 0.6; }

.wip-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #f5a623;
  border: 1px solid rgba(245,166,35,0.3);
  padding: 6px 14px;
  border-radius: 2px;
  margin-bottom: 20px;
}

.wip-pulse {
  width: 6px; height: 6px;
  background: #f5a623;
  border-radius: 50%;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.wip-note {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}

/* Section header */
.section-header {
  padding: 24px 48px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
}

.grid + .section-header {
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* Back navigation */
.back-nav {
  padding: 16px 48px;
  border-bottom: 1px solid var(--border);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* Nav tiles (home page) */
.nav-tile {
  text-decoration: none;
  color: inherit;
  display: block;
  min-height: 280px;
}

.nav-tile-meta {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 32px;
}

.nav-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  transition: gap 0.2s ease;
}

.nav-tile:hover .nav-arrow { gap: 14px; }

/* Footer */
footer {
  margin-top: 40px;
  padding: 0 48px;
  font-size: 11px;
  color: var(--muted);
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

footer a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

footer a:hover { color: var(--accent); }

/* Stagger reveal */
.card {
  opacity: 0;
  transform: translateY(16px);
  animation: reveal 0.5s ease forwards;
}
.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.12s; }
.card:nth-child(3) { animation-delay: 0.19s; }
.card:nth-child(4) { animation-delay: 0.26s; }
.card:nth-child(5) { animation-delay: 0.33s; }

@keyframes reveal {
  to { opacity: 1; transform: translateY(0); }
}

.card.wip { animation-name: reveal-wip; }

@keyframes reveal-wip {
  to { opacity: 0.6; transform: translateY(0); }
}

@media (max-width: 600px) {
  header { padding: 48px 24px 36px; }
  .back-nav { padding: 14px 24px; }
  .section-header { padding: 20px 24px 16px; }
  .card { padding: 28px 24px; }
  footer { padding: 0 24px; }
}