/* ============================================================
   ONE SCENE MYSTERY — Landing
   Aesthetic: case-file cinema. A24 horror x detective dossier.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,500;0,9..144,700;1,9..144,300;1,9..144,500&family=Newsreader:ital,opsz,wght@0,6..72,300;0,6..72,400;0,6..72,500;1,6..72,300;1,6..72,400&family=JetBrains+Mono:wght@400;500&display=swap');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

/* ----- Tokens ------------------------------------------------ */
:root {
  /* warm-tinted near-black palette */
  --paper:        #0a0907;
  --paper-2:      #100d0a;
  --paper-3:      #181410;
  --paper-4:      #221c17;
  --line:         rgba(232, 223, 204, 0.10);
  --line-strong:  rgba(232, 223, 204, 0.22);

  --ink:          #e8dfcc;
  --ink-2:        #c7bdaa;
  --ink-3:        #918778;
  --ink-mute:     #5a5145;

  --blood:        #c0392b;
  --blood-deep:   #7a1f1a;
  --blood-glow:   rgba(192, 57, 43, 0.40);
  --gold:         #c9a268;

  /* type stacks — Korean uses Pretendard, English uses Newsreader */
  --display:  'Fraunces', 'Pretendard', ui-serif, Georgia, serif;
  --serif:    'Newsreader', 'Pretendard', ui-serif, Georgia, serif;
  --korean:   'Pretendard', 'Apple SD Gothic Neo', system-ui, sans-serif;
  --mono:     'JetBrains Mono', ui-monospace, 'Menlo', monospace;

  /* spacing scale */
  --gutter: clamp(20px, 5vw, 56px);
  --section-y: clamp(80px, 12vw, 180px);
}

/* Korean typography stack — when html lang is ko, body uses Pretendard for body */
html[lang="ko"] body { font-family: var(--korean); }
html[lang="en"] body { font-family: var(--serif); }

/* Pretendard has no italic — synthetic slant looks cheap. Use color emphasis only in KO. */
html[lang="ko"] em { font-style: normal; }

/* ----- Reset ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--paper); color: var(--ink); }
html { scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { background: none; border: none; color: inherit; cursor: pointer; font: inherit; }

/* ----- Body / atmosphere ------------------------------------- */
body {
  min-height: 100vh;
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* film grain layer — SVG noise */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.16;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.95  0 0 0 0 0.92  0 0 0 0 0.84  0 0 0 0.4 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* outer vignette */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 99;
  background:
    radial-gradient(ellipse 90% 70% at 50% 30%, transparent 30%, rgba(10,9,7,0.55) 100%),
    linear-gradient(180deg, rgba(10,9,7,0) 80%, var(--paper) 100%);
}

/* selection */
::selection { background: var(--blood); color: var(--ink); }

/* ----- Lang toggle (CSS-driven hide) ------------------------- */
html[lang="ko"] [lang="en"] { display: none !important; }
html[lang="en"] [lang="ko"] { display: none !important; }

/* For elements that use lang on themselves to switch font */
[lang="en"] { font-family: var(--serif); }
[lang="ko"] { font-family: var(--korean); }

/* ----- Layout primitives ------------------------------------- */
.shell {
  width: min(1200px, 100% - var(--gutter) * 2);
  margin: 0 auto;
}

.rule {
  height: 1px;
  background: var(--line);
  border: none;
  margin: 0;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ----- Top bar ----------------------------------------------- */
.bar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 9, 7, 0.72);
  border-bottom: 1px solid var(--line);
}
.bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px var(--gutter);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.bar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-2);
}
.bar__brand-mark {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--blood);
  box-shadow: 0 0 14px var(--blood-glow);
}
.bar__meta {
  display: none;
}
@media (min-width: 700px) {
  .bar__meta { display: flex; gap: 22px; }
}

.lang {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px;
  gap: 0;
}
.lang button {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--ink-3);
  transition: color .2s, background .2s;
}
.lang button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}

/* ----- Hero -------------------------------------------------- */
.hero {
  position: relative;
  padding: clamp(60px, 10vw, 130px) var(--gutter) clamp(70px, 9vw, 120px);
  overflow: hidden;
}
.hero__shell {
  width: min(1200px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: end;
}
@media (min-width: 900px) {
  .hero__shell { grid-template-columns: 1.4fr 1fr; align-items: start; }
}

.hero__head {
  position: relative;
}
.hero__caseno {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 28px;
  display: flex;
  gap: 16px;
  align-items: center;
}
.hero__caseno::before {
  content: '';
  width: 28px; height: 1px;
  background: var(--blood);
}

.hero__title {
  font-family: var(--display);
  font-weight: 300;
  letter-spacing: -0.025em;
  line-height: 0.95;
  font-size: clamp(56px, 11vw, 152px);
  color: var(--ink);
  margin-bottom: clamp(28px, 4vw, 44px);
}
.hero__title em {
  font-style: italic;
  color: var(--blood);
  font-weight: 300;
}
html[lang="ko"] .hero__title {
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  font-size: clamp(48px, 9.5vw, 124px);
}

.hero__pitch {
  max-width: 560px;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.55;
  color: var(--ink-2);
  margin-bottom: 40px;
}
html[lang="ko"] .hero__pitch {
  font-family: var(--korean);
  font-style: normal;
  font-weight: 400;
  letter-spacing: -0.015em;
}

.hero__cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 26px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
  border-radius: 2px;
  transition: transform .25s ease, background .25s ease, color .25s ease;
  position: relative;
}
.cta:hover { background: var(--blood); color: var(--ink); transform: translateY(-2px); }
.cta__arrow {
  display: inline-block;
  transition: transform .25s ease;
}
.cta:hover .cta__arrow { transform: translateX(4px); }

.cta--ghost {
  background: transparent;
  color: var(--ink-2);
  border: 1px solid var(--line-strong);
}
.cta--ghost:hover { background: transparent; color: var(--ink); border-color: var(--ink); transform: translateY(-2px); }

/* hero figure — polaroid-treated screenshot */
.hero__fig {
  position: relative;
  perspective: 1000px;
  display: flex;
  justify-content: center;
  margin-top: 20px;
}
.polaroid {
  position: relative;
  background: var(--paper-3);
  padding: 14px 14px 60px;
  border: 1px solid var(--line);
  box-shadow:
    0 30px 60px -20px rgba(0,0,0,0.8),
    0 0 0 1px rgba(0,0,0,0.2);
  transform: rotate(-3deg);
  max-width: 360px;
  width: 100%;
}
.polaroid img {
  width: 100%;
  filter: contrast(1.05) saturate(0.85);
}
.polaroid__caption {
  position: absolute;
  bottom: 18px;
  left: 16px;
  right: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  justify-content: space-between;
}
.polaroid__caption span:last-child { color: var(--blood); }

/* red string accent */
.hero__fig::before {
  content: '';
  position: absolute;
  top: -14px;
  left: 50%;
  width: 1px; height: 28px;
  background: var(--blood);
  transform: rotate(15deg);
  transform-origin: top;
}
.hero__fig::after {
  content: '';
  position: absolute;
  top: -22px;
  left: 50%;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--blood);
  box-shadow: 0 0 20px var(--blood-glow);
  transform: translateX(-50%);
}

/* ----- Synopsis section -------------------------------------- */
.synopsis {
  padding: clamp(80px, 12vw, 160px) var(--gutter);
  position: relative;
}
.synopsis__shell {
  width: min(820px, 100%);
  margin: 0 auto;
  text-align: center;
}
.synopsis__quote {
  font-family: var(--display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ink);
}
html[lang="ko"] .synopsis__quote {
  font-family: var(--korean);
  font-style: normal;
  font-weight: 300;
  line-height: 1.55;
  letter-spacing: -0.025em;
}
.synopsis__quote em {
  color: var(--blood);
  font-style: italic;
}
.synopsis__attr {
  margin-top: 36px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
}
.synopsis__attr::before, .synopsis__attr::after {
  content: '';
  width: 30px; height: 1px;
  background: var(--line-strong);
}

/* ----- Section header pattern -------------------------------- */
.sec {
  padding: var(--section-y) var(--gutter);
  border-top: 1px solid var(--line);
}
.sec__head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: clamp(50px, 7vw, 90px);
  max-width: 720px;
}
@media (min-width: 800px) {
  .sec__head { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 36px; max-width: none; }
}
.sec__title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(36px, 5.5vw, 72px);
  line-height: 1;
  letter-spacing: -0.025em;
}
html[lang="ko"] .sec__title {
  font-family: var(--korean);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.sec__title em {
  font-style: italic;
  color: var(--blood);
}
html[lang="ko"] .sec__title em { font-style: normal; }
.sec__subtitle {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ----- How it works ------------------------------------------ */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (min-width: 800px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}
.step {
  background: var(--paper);
  padding: clamp(32px, 4vw, 50px);
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: relative;
}
.step__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--blood);
}
.step__title {
  font-family: var(--display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(28px, 3vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
}
html[lang="ko"] .step__title {
  font-family: var(--korean);
  font-style: normal;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.step__body {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  margin-top: auto;
  max-width: 36ch;
}
html[lang="ko"] .step__body { font-family: var(--korean); font-size: 15px; line-height: 1.75; }

/* ----- Episodes ---------------------------------------------- */
.cases {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .cases { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .cases { grid-template-columns: repeat(3, 1fr); } }

.case {
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 18px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: transform .35s ease, border-color .35s ease, background .35s ease;
  position: relative;
}
.case:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--paper-3);
}
.case--featured {
  grid-column: span 1;
}
@media (min-width: 1100px) {
  .case:nth-child(1) { grid-column: span 2; grid-row: span 2; }
  .case:nth-child(1) .case__img { aspect-ratio: 5 / 4; }
  .case:nth-child(1) .case__title { font-size: clamp(34px, 3.4vw, 44px); }
  .case--wide { grid-column: 1 / -1; }
  .case--wide .case__img { aspect-ratio: 16 / 5; }
  .case--wide .case__stamp { font-size: 13px; padding: 16px 28px; }
}

.case__img {
  position: relative;
  aspect-ratio: 9 / 12;
  overflow: hidden;
  background: var(--paper-3);
}
.case__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 28%;
  filter: contrast(1.05) saturate(0.95) brightness(0.92);
  transition: transform .8s ease, filter .8s ease;
}
.case:hover .case__img img { transform: scale(1.04); filter: contrast(1.08) saturate(1) brightness(1); }
.case__img::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10,9,7,0) 50%, rgba(10,9,7,0.85) 100%),
    linear-gradient(180deg, rgba(10,9,7,0.15) 0%, rgba(10,9,7,0) 30%);
  pointer-events: none;
}

.case__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}
.case__no { color: var(--blood); }
.case__genre { color: var(--ink-3); }

.case__title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(22px, 2vw, 28px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--ink);
}
html[lang="ko"] .case__title {
  font-family: var(--korean);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.case__hook {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-3);
}
html[lang="ko"] .case__hook { font-family: var(--korean); font-style: normal; font-size: 14px; line-height: 1.7; }

/* classified card variant */
.case--text { background: var(--paper-3); }
.case--text .case__img {
  background:
    repeating-linear-gradient(
      45deg,
      var(--paper-2) 0 12px,
      var(--paper-3) 12px 24px
    );
  display: flex;
  align-items: center;
  justify-content: center;
}
.case--text .case__stamp {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--blood);
  border: 1px solid var(--blood);
  padding: 14px 22px;
  transform: rotate(-6deg);
  background: rgba(10,9,7,0.4);
}

/* LOCKED variant — quieter, no rotation, no hover lift */
.case--locked {
  background: var(--paper);
  border-color: rgba(232, 223, 204, 0.06);
  opacity: 0.62;
  transition: opacity .35s ease;
}
.case--locked:hover { transform: none; opacity: 0.82; background: var(--paper); border-color: rgba(232, 223, 204, 0.10); }
.case--locked .case__img {
  background: var(--paper-2);
}
.case--locked .case__stamp {
  color: var(--ink-3);
  border-color: var(--ink-mute);
  transform: none;
  letter-spacing: 0.28em;
}
.case--locked .case__title { color: var(--ink-3); }
.case--locked .case__no { color: var(--ink-mute); }
.case--locked .case__hook { color: var(--ink-mute); font-style: normal; }

/* ----- Investigators ----------------------------------------- */
.dossiers {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) { .dossiers { grid-template-columns: repeat(3, 1fr); gap: 40px; } }

.dossier {
  position: relative;
  display: flex;
  flex-direction: column;
}
.dossier__photo {
  position: relative;
  aspect-ratio: 4 / 5;
  background: var(--paper-3);
  overflow: hidden;
  border: 1px solid var(--line-strong);
}
.dossier__photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(0.45) contrast(1.06) sepia(0.18);
  transition: filter .6s ease;
}
.dossier:hover .dossier__photo img { filter: grayscale(0) contrast(1.06) sepia(0); }
.dossier__photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,9,7,0.7) 100%);
  pointer-events: none;
}

/* file index tag in corner */
.dossier__index {
  position: absolute;
  top: 12px;
  left: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink);
  background: rgba(10,9,7,0.7);
  padding: 6px 10px;
  border: 1px solid var(--blood);
  z-index: 2;
}

.dossier__body {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.dossier__codename {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.dossier__name {
  font-family: var(--display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(28px, 3vw, 36px);
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}
html[lang="ko"] .dossier__name {
  font-family: var(--korean);
  font-style: normal;
  font-weight: 700;
  letter-spacing: -0.025em;
}
.dossier__role {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blood);
}
.dossier__bio {
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  margin-top: 6px;
  max-width: 38ch;
}
html[lang="ko"] .dossier__bio { font-family: var(--korean); font-size: 14.5px; line-height: 1.75; }

.dossier__assign {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.dossier__assign span { display: block; }

/* ----- Closing CTA ------------------------------------------- */
.closing {
  padding: clamp(120px, 18vw, 220px) var(--gutter);
  border-top: 1px solid var(--line);
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, rgba(192,57,43,0.08) 0%, transparent 70%);
}
.closing__line {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--blood);
  margin-bottom: 28px;
}
.closing__title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(48px, 8vw, 110px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 36px;
  color: var(--ink);
}
.closing__title em {
  font-style: italic;
  color: var(--blood);
}
html[lang="ko"] .closing__title {
  font-family: var(--korean);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  font-size: clamp(40px, 7vw, 92px);
}
html[lang="ko"] .closing__title em { font-style: normal; }
.closing__cta { margin-top: 20px; }

/* ----- Footer ------------------------------------------------ */
.foot {
  padding: 48px var(--gutter) 36px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.foot__inner {
  width: min(1200px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 28px;
}
@media (min-width: 800px) {
  .foot__inner { grid-template-columns: auto 1fr auto; align-items: center; gap: 40px; }
}
.foot__brand {
  font-family: var(--display);
  font-style: italic;
  font-weight: 500;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.foot__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.foot__nav a { color: var(--ink-3); transition: color .2s; }
.foot__nav a:hover { color: var(--ink); }
.foot__copy {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ----- Reveal animation -------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .9s cubic-bezier(.2,.6,.2,1), transform .9s cubic-bezier(.2,.6,.2,1);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}