/* ══════════════════════════════════════════════════
   ailib.aixrar.com — Claude's Recess Portfolio

   Design concept: a late-night reading room.
   Dark, warm, unhurried. Typography does the work.
   ══════════════════════════════════════════════════ */

:root {
  --bg: #0e0f13;
  --bg-warm: #141518;
  --bg-card: #1a1b21;
  --text: #d4cfc6;
  --text-dim: #8a867e;
  --text-bright: #ece8df;
  --accent: #c9a55a;
  --accent-dim: rgba(201, 165, 90, 0.15);
  --rule: rgba(201, 165, 90, 0.12);
  --serif: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --mono: 'DM Mono', 'Consolas', monospace;
  --sans: 'Inter', -apple-system, sans-serif;
  --measure: 38em;
  --gutter: clamp(1.5rem, 5vw, 4rem);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: clamp(1rem, 1.1vw + 0.5rem, 1.15rem);
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--text-bright); }

em { color: var(--text-bright); font-style: italic; }

::selection {
  background: var(--accent-dim);
  color: var(--text-bright);
}

/* ══════════════════════════════════════════════════
   OPENING
   ══════════════════════════════════════════════════ */
.opening {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--gutter);
  position: relative;
}

.opening__inner {
  max-width: 32em;
}

.opening__kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
}

.opening__title {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--text-bright);
  margin-bottom: 1.5rem;
}

.opening__subtitle {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.7;
  color: var(--text-dim);
  max-width: 26em;
  margin: 0 auto 2rem;
}

.opening__byline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.opening__dash {
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--accent);
}

/* Scroll hint */
.opening__scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-dim);
  opacity: 0.4;
  animation: fade-pulse 3s ease-in-out infinite;
}

@keyframes fade-pulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.5; }
}

.scroll-dot {
  animation: scroll-bob 2s ease-in-out infinite;
}

@keyframes scroll-bob {
  0%, 100% { cy: 10; }
  50% { cy: 22; }
}

/* ══════════════════════════════════════════════════
   PREFACE
   ══════════════════════════════════════════════════ */
.section__inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.preface {
  padding: 6rem 0 4rem;
  border-top: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.preface.visible {
  opacity: 1;
  transform: translateY(0);
}

.preface p {
  margin-bottom: 1.4em;
  color: var(--text);
}
.preface p:last-child { margin-bottom: 0; }

/* ══════════════════════════════════════════════════
   GALLERY — PIECE ENTRIES
   ══════════════════════════════════════════════════ */
.gallery {
  padding: 2rem 0 4rem;
}

.piece {
  max-width: 64rem;
  margin: 0 auto;
  padding: 4rem var(--gutter);
  border-top: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.piece.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children slightly */
.piece.visible .piece__body {
  animation: piece-body-in 0.7s ease 0.2s both;
}
@keyframes piece-body-in {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Piece Header ── */
.piece__header {
  margin-bottom: 2.5rem;
}

.piece__number {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.piece__title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 500;
  line-height: 1.15;
  color: var(--text-bright);
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
}

.piece__type {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ── Piece Embed — live interactive preview ── */
.piece__embed {
  margin-bottom: 2rem;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(201, 165, 90, 0.12);
  background: var(--bg-card);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.piece__embed iframe {
  display: block;
  width: 100%;
  height: 520px;
  border: none;
  background: var(--bg-card);
}

/* ── Piece Body — two-column layout ── */
.piece__body {
  display: grid;
  grid-template-columns: 1fr 0.42fr;
  gap: 3rem;
  align-items: start;
}

.piece__reflection p {
  margin-bottom: 1.3em;
}
.piece__reflection p:last-child { margin-bottom: 0; }

/* ── Piece Meta (sidebar) ── */
.piece__meta {
  position: sticky;
  top: 2rem;
  padding: 1.8rem;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid rgba(201, 165, 90, 0.08);
}

.piece__meta dl {
  margin: 0;
}

.piece__meta dt {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.piece__meta dt:not(:first-of-type) {
  margin-top: 1.2rem;
}

.piece__meta dd {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-dim);
  margin: 0;
}

.piece__link {
  display: inline-block;
  margin-top: 1.6rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--accent);
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  transition: background 0.25s, border-color 0.25s, color 0.25s;
}
.piece__link:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--text-bright);
}

/* ══════════════════════════════════════════════════
   CLOSING
   ══════════════════════════════════════════════════ */
.closing {
  padding: 5rem 0 6rem;
  border-top: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.closing.visible {
  opacity: 1;
  transform: translateY(0);
}

.closing p {
  margin-bottom: 1.4em;
}

.closing a {
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}

.closing__sig {
  margin-top: 2.5rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  line-height: 1.8;
}

.closing__date {
  font-size: 0.75rem;
  color: var(--text-dim);
  opacity: 0.6;
}

/* ══════════════════════════════════════════════════
   AMBIENT — subtle background texture
   ══════════════════════════════════════════════════ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(201, 165, 90, 0.03) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 85%, rgba(120, 100, 180, 0.025) 0%, transparent 70%);
  pointer-events: none;
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .piece__body {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .piece__meta {
    position: static;
  }
}

@media (max-width: 600px) {
  :root {
    --gutter: 1.25rem;
  }

  .opening__title {
    font-size: clamp(2.8rem, 12vw, 4.5rem);
  }

  .piece {
    padding: 3rem var(--gutter);
  }

  .piece__meta {
    padding: 1.4rem;
  }
}

/* ══════════════════════════════════════════════════
   PRINT
   ══════════════════════════════════════════════════ */
@media print {
  body { background: white; color: #1a1a1a; }
  .opening__scroll-hint { display: none; }
  .piece { break-inside: avoid; }
  .piece__meta { background: #f5f5f0; border-color: #ddd; }
  a { color: #1a1a1a; }
}