/* ============================================================
   계엄령.com — Cinematic Documentary Stylesheet
   Palette: Earth-tones (soil, parchment, clay, olive)
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --dark-soil:      #3d2e1e;
  --aged-paper:     #d4c4a8;
  --clay-red:       #a0522d;
  --olive-branch:   #6b7a4a;
  --charcoal-ink:   #2a2218;
  --parchment-cream:#f0e8d8;
  --marble-vein:    #b8a898;

  --font-display:   'Noto Serif KR', serif;
  --font-body:      'Noto Sans KR', sans-serif;
  --font-reference: 'Libre Baskerville', Georgia, serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--charcoal-ink);
  background: var(--parchment-cream);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================================
   HERO — Split Screen
   ============================================================ */

#hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-top {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 50%;
  background: var(--dark-soil);
  z-index: 1;
}

.hero-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 50%;
  background: var(--aged-paper);
  z-index: 1;
}

.hero-zoom-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(160,82,45,0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 20%, rgba(107,122,74,0.10) 0%, transparent 55%);
  animation: heroZoom 8s ease-in-out forwards;
  transform-origin: center center;
}

@keyframes heroZoom {
  from { transform: scale(1); }
  to   { transform: scale(1.05); }
}

.hero-content {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-title-wrap {
  text-align: center;
  position: relative;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;

  /* Split text colour using clip-path */
  position: relative;
  color: transparent;
}

/* Top half of title — light on dark */
.hero-title::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: var(--parchment-cream);
  clip-path: inset(0 0 50% 0);
}

/* Bottom half of title — dark on light */
.hero-title::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: var(--charcoal-ink);
  clip-path: inset(50% 0 0 0);
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 1.5rem;
  /* Half above divider = light, half below = dark — simplified here */
  color: var(--marble-vein);
}

.hero-divider-line {
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 1px;
  background: var(--marble-vein);
  opacity: 0.6;
  z-index: 3;
}

/* ============================================================
   INTRO SECTION
   ============================================================ */

.intro-section {
  background: var(--parchment-cream);
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--marble-vein);
}

.intro-text {
  font-family: var(--font-body);
  font-size: 1.15rem;
  line-height: 1.9;
  color: var(--charcoal-ink);
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

/* ============================================================
   CHAPTER GRID
   ============================================================ */

.chapters-section {
  padding: 5rem 0;
  background: var(--parchment-cream);
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  color: var(--dark-soil);
  margin-bottom: 2.5rem;
  letter-spacing: 0.03em;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* --- Base card styles (non-flip) --- */
.chapter-card {
  position: relative;
  background:
    linear-gradient(135deg, var(--parchment-cream) 20%, var(--aged-paper) 50%, var(--parchment-cream) 80%),
    radial-gradient(ellipse at 30% 50%, rgba(184,168,152,0.3) 0%, transparent 50%);
  padding: 2rem;
  border: 1px solid var(--marble-vein);
  border-radius: 4px;
  overflow: hidden;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.chapter-card:not(.flip-card):hover {
  box-shadow: 0 8px 32px rgba(61,46,30,0.13);
  transform: translateY(-2px);
}

.chapter-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: var(--dark-soil);
  opacity: 0.12;
  position: absolute;
  top: 0.4rem;
  left: 1rem;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark-soil);
  margin-top: 2.2rem;
}

.card-excerpt {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--charcoal-ink);
  flex: 1;
}

.card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: auto;
}

.tag {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--olive-branch);
  color: var(--olive-branch);
  border-radius: 2px;
  background: transparent;
}

/* Data accent — tech motif */
.data-accent {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: auto;
}

.node {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--olive-branch);
  opacity: 0.5;
  position: relative;
}

.node::after {
  content: '';
  position: absolute;
  top: 50%; left: 100%;
  width: 40px;
  height: 1px;
  background: var(--olive-branch);
  opacity: 0.4;
  transform: translateY(-50%);
}

.data-label {
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--olive-branch);
  opacity: 0.6;
  text-transform: uppercase;
}

/* ============================================================
   CARD FLIP
   ============================================================ */

.flip-card {
  perspective: 1000px;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
}

.flip-card .card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 260px;
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
}

.flip-card.flipped .card-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  padding: 2rem;
  border-radius: 4px;
  border: 1px solid var(--marble-vein);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card-front {
  background:
    linear-gradient(135deg, var(--parchment-cream) 20%, var(--aged-paper) 50%, var(--parchment-cream) 80%),
    radial-gradient(ellipse at 30% 50%, rgba(184,168,152,0.3) 0%, transparent 50%);
  color: var(--charcoal-ink);
}

.card-back {
  background: var(--dark-soil);
  color: var(--aged-paper);
  transform: rotateY(180deg);
}

.card-back .chapter-num {
  color: var(--aged-paper);
  opacity: 0.1;
}

.card-back .card-title {
  color: var(--aged-paper);
}

.card-back .card-excerpt {
  color: var(--marble-vein);
}

.flip-hint {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--clay-red);
  margin-top: auto;
  opacity: 0.8;
}

/* ============================================================
   TESTIMONY SECTION
   ============================================================ */

.testimony-section {
  padding: 7rem 0;
  background: var(--aged-paper);
}

.testimony-container {
  max-width: 700px;
}

.testimony-rule {
  width: 100%;
  height: 1px;
  background: var(--marble-vein);
  margin: 2.5rem 0;
}

.testimony-quote {
  text-align: center;
  padding: 0 1rem;
}

.testimony-quote p {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.4rem);
  font-style: italic;
  line-height: 1.9;
  color: var(--dark-soil);
}

.testimony-cite {
  display: block;
  font-family: var(--font-reference);
  font-size: 0.85rem;
  color: var(--clay-red);
  margin-top: 1rem;
  letter-spacing: 0.05em;
  font-style: normal;
}

.testimony-quote--second p.testimony-en {
  font-family: var(--font-reference);
  font-style: italic;
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--charcoal-ink);
}

/* ============================================================
   TIMELINE SECTION
   ============================================================ */

.timeline-section {
  padding: 6rem 0;
  background: var(--parchment-cream);
  border-top: 1px solid var(--marble-vein);
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--marble-vein) 0%, var(--clay-red) 50%, var(--olive-branch) 100%);
  opacity: 0.6;
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(184,168,152,0.3);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.25rem;
  top: 1.85rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--clay-red);
  background: var(--parchment-cream);
}

.timeline-year {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clay-red);
  min-width: 72px;
  line-height: 1.4;
}

.timeline-content h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark-soil);
  margin-bottom: 0.3rem;
}

.timeline-content p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--charcoal-ink);
  line-height: 1.7;
}

/* ============================================================
   ARCHIVE FOOTER
   ============================================================ */

.archive-footer {
  background: var(--dark-soil);
  color: var(--aged-paper);
  padding: 5rem 0 3rem;
}

.archive-header {
  margin-bottom: 3rem;
  border-bottom: 1px solid rgba(184,168,152,0.25);
  padding-bottom: 1.5rem;
}

.archive-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--olive-branch);
  display: block;
  margin-bottom: 0.5rem;
}

.archive-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--aged-paper);
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.archive-col-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clay-red);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(184,168,152,0.2);
}

.archive-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.archive-list li {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--marble-vein);
  line-height: 1.5;
  padding-left: 0.75rem;
  position: relative;
}

.archive-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--olive-branch);
  opacity: 0.5;
}

.archive-footer-bottom {
  border-top: 1px solid rgba(184,168,152,0.2);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.archive-note {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--marble-vein);
  max-width: 600px;
}

.archive-copy {
  font-family: var(--font-reference);
  font-size: 0.8rem;
  color: var(--olive-branch);
  opacity: 0.7;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  .hero-subtitle {
    font-size: 0.8rem;
    letter-spacing: 0.08em;
  }

  .chapter-grid {
    grid-template-columns: 1fr;
  }

  .timeline {
    padding-left: 1.5rem;
  }

  .timeline-item {
    flex-direction: column;
    gap: 0.5rem;
  }

  .archive-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .intro-text {
    font-size: 1rem;
  }

  .testimony-quote p {
    font-size: 1.05rem;
  }
}