/* ── Museum Index ─────────────────────────────────────────── */

:root {
  color-scheme: dark;
  --bg: #0e0e0e;
  --surface: #1a1a1a;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.14);
  --text: #e0e0e0;
  --text-muted: #777;
  --accent: #ffffff;
  --day01: #ff3d00;
  --day02: #c9a96e;
  --day03: #d4a853;
  --day04: #39ff14;
  --day05: #d4b483;
  --day09: #8b5cf6;
  --day13: #00d4ff;
}

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

body {
  font-family: "DM Sans", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ── Shell ───────────────────────────────────────────────── */
.site-shell {
  min-height: 100vh;
  max-width: 68rem;
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 5rem) clamp(1.5rem, 4vw, 3rem);
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  margin-bottom: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(1.5rem, 3vw, 2rem);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-family: "Instrument Serif", Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--accent);
  max-width: 18ch;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.link-primary,
.link-secondary {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 1.4rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid var(--border-hover);
  transition: background 0.2s, border-color 0.2s;
}

.link-primary {
  background: rgba(255, 255, 255, 0.06);
}

.link-secondary {
  background: transparent;
}

.link-primary:hover,
.link-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.24);
}

/* ── Project Grid ────────────────────────────────────────── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: clamp(1.6rem, 3vw, 2.4rem);
  background: var(--bg);
  border-left: 3px solid transparent;
  transition: background 0.25s, border-color 0.35s;
}

.project-card:hover {
  background: #161616;
}

.project-card[data-day="01"]:hover { border-left-color: var(--day01); }
.project-card[data-day="02"]:hover { border-left-color: var(--day02); }
.project-card[data-day="03"]:hover { border-left-color: var(--day03); }
.project-card[data-day="04"]:hover { border-left-color: var(--day04); }
.project-card[data-day="05"]:hover { border-left-color: var(--day05); }
.project-card[data-day="09"]:hover { border-left-color: var(--day09); }
.project-card[data-day="13"]:hover { border-left-color: var(--day13); }

.card-num {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.project-card h2 {
  font-family: "Instrument Serif", Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.8rem;
}

.card-tech {
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 0.02em;
}

.card-link {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 760px) {
  .project-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 br { display: none; }
}