/* ============================================
   CODEZEN · AI CINEMA EDITORIAL
   Dark cinematic magazine style
   ============================================ */

:root {
  --bg: #0a0a0c;
  --bg-elevated: #121216;
  --bg-card: #16161a;
  --text: #e8e6e3;
  --text-muted: #9a9690;
  --text-dim: #6b6762;
  --accent: #c4a77d;
  --accent-soft: rgba(196, 167, 125, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --neon: #7eb8c9;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  --max: 1120px;
  --toc-w: 200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: #d4b98d; }

img { max-width: 100%; height: auto; display: block; }

/* Reading Progress */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--accent);
  width: 0%;
  z-index: 1000;
  transition: width 0.05s linear;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: calc(var(--max) + var(--toc-w) + 80px);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--text);
}
.logo:hover { color: var(--accent); }

.main-nav {
  display: flex;
  gap: 20px;
}
.main-nav a {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.main-nav a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text);
  position: absolute;
  left: 0;
  transition: 0.25s;
}
.nav-toggle span:first-child { top: 4px; }
.nav-toggle span:last-child { bottom: 4px; }

/* Layout */
.layout {
  display: grid;
  grid-template-columns: var(--toc-w) 1fr;
  max-width: calc(var(--max) + var(--toc-w) + 80px);
  margin: 0 auto;
  gap: 40px;
  padding: 0 24px;
}

/* TOC */
.toc {
  position: sticky;
  top: 80px;
  align-self: start;
  padding: 24px 0;
  font-size: 0.75rem;
}
.toc-label {
  letter-spacing: 0.15em;
  color: var(--text-dim);
  margin-bottom: 16px;
  font-size: 0.65rem;
}
.toc ol {
  list-style: none;
}
.toc li { margin-bottom: 8px; }
.toc a {
  display: flex;
  gap: 10px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.toc a:hover,
.toc a.active { color: var(--accent); }
.toc a span {
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  min-width: 18px;
}

/* Main */
.main-content {
  max-width: var(--max);
  padding-bottom: 80px;
}

/* Hero */
.hero {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.hero-meta {
  display: flex;
  gap: 10px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 32px;
  text-transform: uppercase;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: end;
}
.hero-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 16px;
}
h1 {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.h1-line { display: block; }
.h1-line.accent { color: var(--accent); }
.hero-vertical {
  writing-mode: vertical-rl;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  position: absolute;
  right: -30px;
  top: 0;
  height: 140px;
  display: none;
}
.hero-text { position: relative; }
.hero-lead {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 420px;
  margin-bottom: 28px;
  line-height: 1.75;
}
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 10px 22px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  background: var(--accent);
  color: #0a0a0c;
  border: 1px solid var(--accent);
  transition: 0.2s;
}
.btn:hover {
  background: transparent;
  color: var(--accent);
}
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border-strong);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-visual {
  display: flex;
  justify-content: flex-end;
}
.hero-poster {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 3/4;
  background: linear-gradient(145deg, #1a1a22 0%, #0d0d12 50%, #151520 100%);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.poster-frame {
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(196, 167, 125, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}
.poster-inner {
  text-align: center;
}
.poster-tag {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--neon);
  margin-bottom: 12px;
}
.poster-title {
  display: block;
  font-size: 1.8rem;
  letter-spacing: 0.15em;
  color: var(--text);
  font-weight: 300;
}
.poster-sub {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-top: 8px;
}
.hero-bottom {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
  flex-wrap: wrap;
}

/* Age Notice */
.age-notice {
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 12px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

/* Sections */
.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}
.section-num {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.section-label {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
}
h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  line-height: 1.3;
}
.section-intro {
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 640px;
}
.prose {
  max-width: 680px;
}
.prose p {
  margin-bottom: 18px;
  color: var(--text-muted);
}
.prose p:last-child { margin-bottom: 0; }

/* Term Cards */
.term-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.term-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 20px;
}
.term-card h3 {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}
.term-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Drama Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.drama-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.2s;
}
.drama-card:hover { border-color: var(--border-strong); }
.card-visual {
  aspect-ratio: 16/10;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 12px;
}
.card-visual.v1 { background: linear-gradient(160deg, #1a1520 0%, #2a1f35 40%, #0d0d12 100%); }
.card-visual.v2 { background: linear-gradient(160deg, #0f1a22 0%, #1a2a35 40%, #0d0d12 100%); }
.card-visual.v3 { background: linear-gradient(160deg, #1a1810 0%, #2a2518 40%, #0d0d12 100%); }
.card-visual.v4 { background: linear-gradient(160deg, #151820 0%, #1f2530 40%, #0d0d12 100%); }
.card-visual.v5 { background: linear-gradient(160deg, #1a1218 0%, #2a1a25 40%, #0d0d12 100%); }
.card-visual.v6 { background: linear-gradient(160deg, #101820 0%, #1a2530 40%, #0d0d12 100%); }
.card-tag {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: rgba(0,0,0,0.4);
  padding: 4px 8px;
}
.card-body { padding: 20px; }
.card-body h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 4px;
}
.card-genre {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}
.card-body p:last-child {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Genres */
.genre-list {
  display: grid;
  gap: 28px;
}
.genre-item h3 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}
.genre-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 680px;
}

/* Pipeline */
.pipeline {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 40px;
  margin-top: 32px;
}
.pipeline-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  position: sticky;
  top: 100px;
  align-self: start;
}
.pipe-step {
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  width: 100%;
  text-align: center;
}
.pipe-arrow { color: var(--accent); font-size: 0.8rem; }
.pipeline-steps { display: grid; gap: 28px; }
.step h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.step h3 span {
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.step p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 580px;
}

/* Table */
.table-wrap {
  overflow-x: auto;
  margin: 24px 0 16px;
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
td { color: var(--text-muted); }
td:first-child {
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
}
.table-note {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Manju Grid */
.manju-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 32px;
}
.manju-card {
  aspect-ratio: 3/4;
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  padding: 12px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.manju-card.m1 { background: linear-gradient(180deg, #1a1525 0%, #0d0d12 100%); }
.manju-card.m2 { background: linear-gradient(180deg, #152025 0%, #0d0d12 100%); }
.manju-card.m3 { background: linear-gradient(180deg, #1a1812 0%, #0d0d12 100%); }
.manju-card.m4 { background: linear-gradient(180deg, #181520 0%, #0d0d12 100%); }

/* Glossary */
.glossary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.gloss-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 18px;
}
.gloss-en {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 8px;
}
.gloss-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Identify Box */
.identify-box {
  margin-top: 28px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
}
.id-tag {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--neon);
  border: 1px solid rgba(126, 184, 201, 0.3);
  padding: 3px 8px;
  margin-right: 8px;
  margin-bottom: 10px;
}
.identify-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-list { margin-top: 16px; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item summary {
  padding: 16px 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.1rem;
  color: var(--text-dim);
  transition: transform 0.2s;
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-item p {
  padding: 0 0 18px;
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 640px;
}

/* Footer */
.site-footer {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: grid;
  gap: 20px;
}
.footer-brand .logo {
  display: block;
  margin-bottom: 6px;
}
.footer-brand p {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
}
.footer-nav a {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-nav a:hover { color: var(--accent); }
.footer-note {
  font-size: 0.75rem;
  color: var(--text-dim);
}
.footer-update {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .toc {
    display: none;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-visual {
    justify-content: flex-start;
  }
  .hero-poster {
    max-width: 280px;
  }
  .pipeline {
    grid-template-columns: 1fr;
  }
  .pipeline-visual {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    position: static;
    gap: 6px;
  }
  .pipe-arrow { display: none; }
  .pipe-step { width: auto; }
  .manju-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    gap: 12px;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  h1 { font-size: 2.4rem; }
  .hero-bottom { gap: 16px; }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .term-cards {
    grid-template-columns: 1fr 1fr;
  }
  .glossary {
    grid-template-columns: 1fr;
  }
  th, td { padding: 10px 12px; font-size: 0.8rem; }
}

@media (max-width: 430px) {
  .term-cards {
    grid-template-columns: 1fr;
  }
  .manju-grid {
    grid-template-columns: 1fr 1fr;
  }
  .header-inner { padding: 0 16px; }
  .layout { padding: 0 16px; }
}