/* ============================================================================
   daitoua.com – Sealed Archive Design System
   ============================================================================ */

:root {
  /* Color Palette */
  --color-sealed-archive: #3B0A1E;
  --color-inner-chamber: #1A0D12;
  --color-vault-black: #0A0407;
  --color-vermillion-seal: #B8342A;
  --color-tarnished-gold: #8B7A3E;
  --color-brushed-gold: #C9A84C;
  --color-aged-parchment: #D8C8A8;
  --color-foxed-paper: #A89878;
  --color-sumi-ink: #1C1714;
  --color-indigo-tint: #2E3A5C;
  --color-warm-brown: #2A1610;

  /* Typography */
  --font-display: 'Playfair Display', 'Cormorant Garamond', serif;
  --font-body: 'Cormorant Garamond', 'Playfair Display', serif;
  --font-annotation: 'IM Fell English', 'Cormorant Garamond', serif;
  --font-mono: 'Space Mono', monospace;

  /* Scroll Progress */
  --scroll-progress: 0%;
  --bg-shift: var(--color-sealed-archive);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-sealed-archive);
  color: var(--color-aged-parchment);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.85;
  overflow-x: hidden;
  position: relative;
  transition: background-color 1.2s ease;
}

/* Paper texture overlay (mulberry grain) */
.paper-texture {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.05;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="240" height="240"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.85" numOctaves="3"/></filter><rect width="240" height="240" filter="url(%23n)" fill="%23D8C8A8"/></svg>');
  z-index: 50;
  mix-blend-mode: overlay;
}

/* ============================================================================
   Scroll Progress Indicator (paper roll)
   ============================================================================ */

.scroll-progress {
  position: fixed;
  right: 0;
  top: 0;
  width: 8px;
  height: 100vh;
  background: linear-gradient(to bottom,
    var(--color-aged-parchment) 0%,
    var(--color-aged-parchment) var(--scroll-progress),
    var(--color-tarnished-gold) var(--scroll-progress),
    var(--color-sealed-archive) calc(var(--scroll-progress) + 1%),
    var(--color-sealed-archive) 100%
  );
  z-index: 100;
  pointer-events: none;
  box-shadow: -2px 0 8px rgba(0,0,0,0.4);
}

/* ============================================================================
   SECTION I: Hero
   ============================================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at center, rgba(139,122,62,0.08) 0%, transparent 60%),
    linear-gradient(180deg,
      var(--color-sealed-archive) 0%,
      var(--color-sealed-archive) 65%,
      var(--color-warm-brown) 100%);
  overflow: hidden;
}

.hero-content {
  position: relative;
  text-align: center;
  z-index: 2;
  padding: 4rem 2rem;
}

.hero-mon {
  position: absolute;
  width: 320px;
  height: 320px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  z-index: 1;
  animation: mon-fade-in 3s ease-out 0.4s forwards;
}

@keyframes mon-fade-in {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.92); }
  60% { opacity: 0.18; }
  100% { opacity: 0.15; transform: translate(-50%, -50%) scale(1); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--color-brushed-gold);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  position: relative;
  z-index: 2;
  line-height: 1;
  padding: 1.5rem 1rem;
  text-shadow: 0 0 30px rgba(201,168,76,0.3);
  opacity: 0;
  filter: blur(12px);
  animation: blur-focus-in 1.6s ease-out 0.2s forwards;
  display: inline-block;
}

@keyframes blur-focus-in {
  0% { opacity: 0; filter: blur(12px); }
  100% { opacity: 1; filter: blur(0); }
}

.hero-subtitle {
  font-family: var(--font-annotation);
  font-style: italic;
  color: var(--color-foxed-paper);
  font-size: clamp(0.8rem, 1.2vw, 0.95rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 3rem;
  opacity: 0;
  animation: blur-focus-in 1.4s ease-out 1.6s forwards;
  position: relative;
  z-index: 2;
}

/* ============================================================================
   SECTION II: Archive Table
   ============================================================================ */

.archive-table {
  min-height: 100vh;
  background:
    linear-gradient(180deg, var(--color-warm-brown) 0%, var(--color-inner-chamber) 100%);
  display: grid;
  grid-template-columns: 60% 40%;
  align-items: stretch;
  gap: 0;
}

.archive-image-container {
  position: relative;
  overflow: hidden;
  filter: blur(12px);
  opacity: 0.3;
  transition: filter 0.8s ease-out, opacity 0.8s ease-out;
}

.archive-image-container.in-view {
  filter: blur(0);
  opacity: 1;
}

.archive-image {
  width: 100%;
  height: 100%;
  min-height: 100vh;
  position: relative;
  background:
    radial-gradient(circle at 30% 30%, rgba(216,200,168,0.18) 0%, transparent 35%),
    linear-gradient(135deg, var(--color-indigo-tint) 0%, var(--color-warm-brown) 50%, var(--color-inner-chamber) 100%);
  overflow: hidden;
}

.archive-image-overlay {
  position: absolute;
  inset: 0;
  background-color: var(--color-sealed-archive);
  mix-blend-mode: multiply;
  opacity: 0.35;
  pointer-events: none;
}

.archive-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.archive-text-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 3rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease-out 0.2s, transform 0.8s ease-out 0.2s;
}

.archive-text-container.in-view {
  opacity: 1;
  transform: translateY(0);
}

.archive-text {
  max-width: 28rem;
}

.archive-text p {
  margin-bottom: 1.5em;
  color: var(--color-aged-parchment);
}

.archive-text p:last-child { margin-bottom: 0; }

.section-heading {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  letter-spacing: 0.04em;
  color: var(--color-brushed-gold);
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

/* ============================================================================
   SECTION III: Map Room
   ============================================================================ */

.map-room {
  position: relative;
  height: 300vh;
}

.map-room-scroll-container {
  position: sticky;
  top: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(ellipse at center, rgba(46,58,92,0.4) 0%, transparent 70%),
    linear-gradient(135deg, var(--color-inner-chamber) 0%, var(--color-warm-brown) 60%, var(--color-sumi-ink) 100%);
}

.map-room-scroll-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(139,122,62,0.05) 0%, transparent 25%),
    radial-gradient(circle at 80% 70%, rgba(139,122,62,0.05) 0%, transparent 25%);
  opacity: 0.5;
  pointer-events: none;
}

.map-room-inner {
  display: flex;
  width: 300vw;
  height: 100vh;
  transform: translateX(0);
  will-change: transform;
}

.map-panel {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  position: relative;
  flex-shrink: 0;
}

.map-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: radial-gradient(circle, var(--color-tarnished-gold) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.map-heading {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  color: var(--color-brushed-gold);
  letter-spacing: 0.06em;
  margin-bottom: 2rem;
  text-align: center;
}

.cartographic-element {
  max-width: 100%;
  max-height: 60vh;
  filter: drop-shadow(0 0 25px rgba(0,0,0,0.5));
  margin-bottom: 2rem;
}

.map-annotation {
  font-family: var(--font-annotation);
  font-size: clamp(0.85rem, 1.3vw, 1rem);
  color: var(--color-tarnished-gold);
  letter-spacing: 0.06em;
  opacity: 0.85;
  text-align: center;
  font-style: italic;
}

/* ============================================================================
   SECTION IV: Reading Alcove
   ============================================================================ */

.reading-alcove {
  min-height: 100vh;
  background:
    linear-gradient(180deg, var(--color-sumi-ink) 0%, var(--color-inner-chamber) 30%, var(--color-inner-chamber) 100%);
  padding: 8rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reading-column {
  max-width: 38rem;
  margin: 0 auto;
  position: relative;
  opacity: 0;
  filter: blur(10px);
  transition: opacity 1s ease-out, filter 1s ease-out;
}

.reading-alcove.in-view .reading-column {
  opacity: 1;
  filter: blur(0);
}

.scholarly-essay {
  position: relative;
}

.scholarly-essay p {
  margin-bottom: 1.5em;
  color: var(--color-aged-parchment);
}

.scholarly-essay p:last-of-type { margin-bottom: 0; }

.pull-quote {
  position: absolute;
  left: -16rem;
  top: 8rem;
  width: 13rem;
  margin: 0;
  padding: 0;
}

.pull-quote p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--color-aged-parchment);
  line-height: 1.5;
  margin: 0;
  padding-left: 1.5rem;
  border-left: 3px solid var(--color-vermillion-seal);
}

.pull-quote-attribution {
  display: block;
  font-family: var(--font-annotation);
  font-style: italic;
  color: var(--color-foxed-paper);
  font-size: 0.8rem;
  margin-top: 0.8rem;
  padding-left: 1.5rem;
  letter-spacing: 0.04em;
}

@media (max-width: 1280px) {
  .pull-quote {
    position: relative;
    left: 0;
    top: 0;
    width: 100%;
    margin: 2.5rem 0;
  }
  .pull-quote p {
    padding-left: 1.5rem;
  }
}

/* ============================================================================
   SECTION V: Colophon
   ============================================================================ */

.colophon {
  min-height: 100vh;
  background:
    radial-gradient(ellipse at center, rgba(58,10,30,0.25) 0%, transparent 60%),
    linear-gradient(180deg, var(--color-inner-chamber) 0%, var(--color-vault-black) 50%, var(--color-vault-black) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
}

.colophon-content {
  text-align: center;
  position: relative;
  opacity: 0;
  filter: blur(10px);
  transition: opacity 1.2s ease-out, filter 1.2s ease-out;
}

.colophon.in-view .colophon-content {
  opacity: 1;
  filter: blur(0);
}

.mon-colophon {
  margin: 0 auto 2rem;
  display: block;
  opacity: 0.6;
}

.colophon-rule {
  width: 40vw;
  max-width: 240px;
  height: 1px;
  background-color: var(--color-tarnished-gold);
  opacity: 0.4;
  margin: 1.5rem auto 2.5rem;
}

.colophon-text {
  font-family: var(--font-annotation);
  font-size: clamp(0.8rem, 1.3vw, 0.95rem);
  letter-spacing: 0.18em;
  color: var(--color-aged-parchment);
  text-transform: uppercase;
}

.colophon-line {
  margin: 0.7rem 0;
  font-style: italic;
  opacity: 0.85;
}

.colophon-domain {
  color: var(--color-brushed-gold);
  letter-spacing: 0.22em;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  margin-bottom: 1.4rem;
}

.colophon-seal {
  margin-top: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: var(--color-vermillion-seal);
  color: var(--color-aged-parchment);
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 900;
  transform: rotate(-4deg);
  box-shadow: 0 4px 20px rgba(184,52,42,0.35);
  letter-spacing: 0;
  border: 2px solid rgba(216,200,168,0.25);
}

/* ============================================================================
   SVG Path-Draw Animations
   ============================================================================ */

.mon-path,
.mon-path-colophon {
  stroke-dasharray: 800;
  stroke-dashoffset: 800;
  animation: path-draw 2.5s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.map-path,
.map-path-2,
.map-path-3 {
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
}

.map-panel.draw-active .map-path,
.map-panel.draw-active .map-path-2,
.map-panel.draw-active .map-path-3 {
  animation: path-draw 2.5s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

@keyframes path-draw {
  to { stroke-dashoffset: 0; }
}

/* ============================================================================
   Reveal Section Generic
   ============================================================================ */

.reveal-section {
  position: relative;
}

/* ============================================================================
   Responsive
   ============================================================================ */

@media (max-width: 1024px) {
  .archive-table {
    grid-template-columns: 1fr;
    grid-template-rows: 60vh auto;
  }
  .archive-image, .archive-image-container {
    min-height: 60vh;
  }
  .archive-text-container {
    padding: 3rem 2rem;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: clamp(2.2rem, 12vw, 4.5rem);
    letter-spacing: 0.12em;
  }
  .hero-mon {
    width: 220px;
    height: 220px;
  }
  .map-room {
    height: auto;
    min-height: 100vh;
  }
  .map-room-scroll-container {
    position: relative;
    height: auto;
    min-height: 100vh;
  }
  .map-room-inner {
    width: 100%;
    height: auto;
    flex-direction: column;
    transform: none !important;
  }
  .map-panel {
    width: 100%;
    min-height: 100vh;
  }
  .reading-column {
    max-width: 92%;
  }
  .scroll-progress {
    width: 4px;
  }
  .colophon-rule {
    width: 60vw;
  }
  .mon-colophon {
    width: 60px;
    height: 60px;
  }
}