:root {
  /* Intersection Observer at 20% threshold for scroll-triggered reveals */
  --linen: #f4f1ec;
  --birch: #e8e4dd;
  --frost: #ffffffb3;
  --charcoal: #4a4a4a;
  --warm-grey: #5c5c5c;
  --body: #636363;
  --stone: #8a8a8a;
  --indigo: #6b7b9e;
  --clay: #b8a089;
  --border: #d4d0ca;
  --dust: #c4bfb6;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1.0);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--linen);
  color: var(--body);
  font-family: "Karla", sans-serif;
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  line-height: 1.72;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.18;
  background-image:
    radial-gradient(circle at 18% 24%, rgba(74, 74, 74, 0.07) 0 1px, transparent 1.4px),
    radial-gradient(circle at 72% 64%, rgba(196, 191, 182, 0.18) 0 1px, transparent 1.5px),
    radial-gradient(circle at 42% 82%, rgba(138, 138, 138, 0.09) 0 0.8px, transparent 1.2px);
  background-size: 200px 200px, 164px 164px, 128px 128px;
}

a {
  color: inherit;
  text-decoration: none;
}

#particle-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

main,
.minimal-nav {
  position: relative;
  z-index: 2;
}

.minimal-nav {
  position: fixed;
  top: 24px;
  left: 32px;
  right: 32px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border: 1px solid rgba(212, 208, 202, 0.72);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.42);
  backdrop-filter: blur(16px) saturate(110%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.035);
  opacity: 0;
  transform: translateY(-12px);
  pointer-events: none;
  transition: opacity 600ms var(--ease), transform 600ms var(--ease), border-color 600ms var(--ease);
}

.minimal-nav.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-wordmark,
.quiet-menu a,
.menu-toggle {
  font-family: "Bebas Neue", sans-serif;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--warm-grey);
}

.nav-wordmark {
  font-size: 1.4rem;
}

.menu-toggle {
  width: 36px;
  height: 28px;
  border: 0;
  background: transparent;
  display: grid;
  align-content: center;
  gap: 7px;
  padding: 0;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 1px;
  background: var(--warm-grey);
  transition: transform 400ms var(--ease), background 400ms var(--ease);
}

.minimal-nav.menu-open .menu-toggle span:first-child {
  transform: translateY(4px) rotate(18deg);
  background: var(--indigo);
}

.minimal-nav.menu-open .menu-toggle span:last-child {
  transform: translateY(-4px) rotate(-18deg);
  background: var(--indigo);
}

.quiet-menu {
  position: absolute;
  top: 60px;
  right: 0;
  display: grid;
  gap: 8px;
  min-width: 184px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.58);
  backdrop-filter: blur(16px) saturate(110%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 400ms var(--ease), transform 400ms var(--ease), border-color 400ms var(--ease);
}

.minimal-nav.menu-open .quiet-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  border-color: var(--indigo);
}

.quiet-menu a {
  font-size: 1.1rem;
  transition: color 300ms var(--ease);
}

.quiet-menu a:hover {
  color: var(--clay);
}

.hero-section,
.closing-field,
.narrative-strip {
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
}

.hero-section {
  background: transparent;
  position: relative;
}

.hero-wordmark,
.closing-wordmark {
  margin: 0;
  font-family: "Bebas Neue", sans-serif;
  font-weight: 400;
  color: var(--charcoal);
  letter-spacing: 0.18em;
  line-height: 0.9;
}

.hero-wordmark {
  font-size: clamp(4rem, 12vw, 10rem);
  animation: wordmarkIn 1200ms var(--ease) both;
}

.hero-line {
  position: absolute;
  top: calc(50% + clamp(3.4rem, 8vw, 7rem));
  left: 50%;
  width: 80px;
  height: 1px;
  background: var(--border);
  transform: translateX(-50%);
  animation: lineIn 700ms var(--ease) 400ms both;
}

.exploration-section,
.detail-section {
  padding: 112px max(24px, 6vw);
}

.exploration-section {
  background: rgba(232, 228, 221, 0.32);
}

.section-label {
  margin: 0 auto 32px;
  max-width: 1180px;
  font-family: "Karla", sans-serif;
  font-size: clamp(0.75rem, 0.9vw, 0.85rem);
  color: var(--stone);
  letter-spacing: 0.04em;
}

.modular-grid,
.detail-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 32px 24px;
}

.glass-card {
  position: relative;
  min-height: 240px;
  padding: 32px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(16px) saturate(110%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.glass-card::before,
.narrative-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(from 0deg, var(--indigo) 0deg, var(--indigo) var(--draw, 0deg), var(--border) var(--draw, 0deg), var(--border) 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: --draw 800ms var(--ease), opacity 400ms var(--ease);
}

.glass-card.is-visible::before,
.narrative-strip.is-visible::before {
  --draw: 360deg;
}

.glass-card > *,
.strip-content {
  position: relative;
  z-index: 1;
}

.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }

.tall-card {
  min-height: 512px;
}

.wide-card {
  min-height: 248px;
}

.compact-card {
  min-height: 240px;
}

.line-icon {
  width: 24px;
  height: 24px;
  margin-bottom: 40px;
  fill: none;
  stroke: var(--stone);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.meta {
  margin: 0 0 12px;
  font-size: clamp(0.75rem, 0.9vw, 0.85rem);
  color: var(--stone);
  letter-spacing: 0.04em;
}

.glass-card h2,
.narrative-strip h2 {
  margin: 0 0 16px;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm-grey);
}

.glass-card p:last-child,
.closing-field p,
.narrative-strip p {
  margin: 0;
}

.narrative-strip {
  position: relative;
  margin: 72px max(24px, 6vw);
  min-height: calc(100vh - 144px);
  border-radius: 6px;
  background: transparent;
}

.narrative-strip::before {
  transition-duration: 1600ms;
}

.strip-content {
  opacity: 0;
  transition: opacity 900ms var(--ease) 300ms;
}

.narrative-strip.is-visible .strip-content {
  opacity: 1;
}

.narrative-strip h2 {
  margin-bottom: 24px;
  font-size: clamp(3rem, 9vw, 7.5rem);
  color: var(--charcoal);
}

.detail-section {
  background: rgba(232, 228, 221, 0.5);
}

.detail-card {
  min-height: 320px;
}

.closing-field {
  min-height: 60vh;
  padding: 80px 24px;
}

.closing-wordmark {
  font-size: clamp(2.4rem, 7.2vw, 6rem);
  margin-bottom: 28px;
}

.closing-field p {
  max-width: 520px;
  color: var(--body);
}

@property --draw {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@keyframes wordmarkIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes lineIn {
  from { opacity: 0; transform: translate(-50%, 8px) scaleX(0.6); }
  to { opacity: 1; transform: translate(-50%, 0) scaleX(1); }
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-card {
    opacity: 0.96;
    transition: border-color 800ms var(--ease), opacity 800ms var(--ease);
  }

  .reveal-card.is-visible {
    opacity: 1;
  }
}

@media (max-width: 1024px) {
  .modular-grid,
  .detail-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .span-2,
  .span-3 { grid-column: span 3; }
  .span-4,
  .span-6,
  .span-8 { grid-column: span 6; }
}

@media (max-width: 640px) {
  .minimal-nav {
    top: 16px;
    left: 16px;
    right: 16px;
  }

  .exploration-section,
  .detail-section {
    padding: 80px 20px;
  }

  .modular-grid,
  .detail-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .span-2,
  .span-3,
  .span-4,
  .span-6,
  .span-8 {
    grid-column: 1 / -1;
  }

  .glass-card {
    min-height: auto;
    padding: 20px;
  }

  .tall-card,
  .wide-card,
  .compact-card,
  .detail-card {
    min-height: 240px;
  }

  .narrative-strip {
    margin: 56px 20px;
    min-height: calc(100vh - 112px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    transition-duration: 1ms !important;
  }

  .glass-card::before,
  .narrative-strip::before {
    --draw: 360deg;
  }
}