:root {
  /* Intersection Observer each without competing. (Google */
  --fired-terracotta: #c4714a;
  --dark-umber: #3d2b1f;
  --warm-parchment: #f5e6d3;
  --oxidized-copper: #7a9e7e;
  --warm-stone: #6b5a4e;
  --kiln-cream: #ede0ce;
  --deep-clay: #5c3a28;
  --raw-sienna: #d4956b;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--warm-parchment);
}

body {
  margin: 0;
  font-family: "DM Sans", sans-serif;
  color: var(--dark-umber);
  background: var(--warm-parchment);
  overflow-x: hidden;
}

.organic-story {
  width: 100%;
  overflow: hidden;
}

.flow-zone {
  position: relative;
  min-height: 100vh;
}

.workshop-zone {
  height: 100vh;
  overflow: hidden;
}

.workshop-bg {
  background-color: var(--warm-parchment);
  background-image:
    radial-gradient(ellipse 80% 60% at 25% 30%, #d4956b66, transparent 62%),
    radial-gradient(ellipse 60% 80% at 70% 65%, #c4714a4d, transparent 64%),
    radial-gradient(ellipse 68% 52% at 45% 82%, #7a9e7e24, transparent 62%),
    radial-gradient(ellipse 90% 70% at 50% 50%, #ede0ce55, transparent 70%),
    radial-gradient(ellipse 42% 36% at 83% 18%, #f5e6d366, transparent 65%);
  background-size: 145% 145%, 138% 138%, 125% 125%, 150% 150%, 120% 120%;
  animation: workshopMesh 120s ease-in-out infinite alternate;
}

@keyframes workshopMesh {
  0% { background-position: 0% 0%, 100% 100%, 50% 100%, 45% 45%, 100% 0%; filter: hue-rotate(var(--hour-warmth, 0deg)); }
  50% { background-position: 18% 9%, 80% 88%, 57% 84%, 55% 38%, 88% 16%; filter: hue-rotate(calc(var(--hour-warmth, 0deg) - 3deg)); }
  100% { background-position: 7% 18%, 90% 78%, 46% 92%, 50% 52%, 94% 11%; filter: hue-rotate(calc(var(--hour-warmth, 0deg) + 2deg)); }
}

.hero-mark {
  position: absolute;
  left: 38%;
  top: 42%;
  transform: translate(-38%, -42%);
}

.hero-mark h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(3rem, 8vw, 7rem);
  line-height: 0.92;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dark-umber);
}

.hero-mark p {
  margin: 24px 0 0 0.35em;
  font-family: "DM Sans", sans-serif;
  font-size: clamp(0.72rem, 1.1vw, 0.95rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(61, 43, 31, 0.72);
}

.zone-indicator {
  position: fixed;
  z-index: 30;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.indicator-dot {
  width: 8px;
  height: 8px;
  border: 1px solid var(--fired-terracotta);
  border-radius: 999px;
  background: transparent;
  transition: background-color 300ms ease, border-color 300ms ease, transform 300ms ease;
}

.indicator-dot.active {
  background: var(--fired-terracotta);
  transform: scale(1.12);
}

.arch-boundary {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 150px;
  pointer-events: none;
}

.arch-boundary > path { fill: var(--kiln-cream); }
.arch-lines path, .signal-arches path {
  fill: none;
  stroke: rgba(92, 58, 40, 0.85);
  stroke-width: 2;
}

.craft-zone {
  min-height: 150vh;
  background-color: var(--kiln-cream);
  background-image:
    linear-gradient(rgba(196, 113, 74, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 113, 74, 0.15) 1px, transparent 1px);
  background-size: 48px 48px;
  padding: clamp(5rem, 8vw, 8rem) 0 clamp(7rem, 12vw, 12rem);
}

.zone-label {
  position: absolute;
  top: clamp(2rem, 5vw, 4rem);
  left: clamp(1.5rem, 8vw, 8rem);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  letter-spacing: 0.05em;
  color: var(--fired-terracotta);
}

.craft-field {
  position: relative;
  min-height: 128vh;
  width: min(1180px, calc(100vw - 48px));
  margin: 0 auto;
}

.project-card {
  position: absolute;
  perspective: 1200px;
  cursor: pointer;
  outline: none;
}

.card-large { width: 300px; height: 400px; }
.card-medium { width: 240px; height: 320px; }
.card-small { width: 180px; height: 240px; }

.card-a { left: 43%; top: 9%; transform: rotate(-3deg); }
.card-b { left: 18%; top: 27%; transform: rotate(5deg); }
.card-c { left: 67%; top: 38%; transform: rotate(-7deg); }
.card-d { left: 47%; top: 62%; transform: rotate(4deg); }
.card-e { left: 28%; top: 76%; transform: rotate(-5deg); }

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .card-inner,
.project-card:focus .card-inner,
.project-card.flipped .card-inner {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 28px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: 0 26px 60px rgba(61, 43, 31, 0.14);
}

.card-front {
  background: linear-gradient(145deg, var(--kiln-cream), var(--warm-parchment));
  border: 1px solid rgba(196, 113, 74, 0.18);
}

.card-front span {
  margin-top: 22px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(196, 113, 74, 0.72);
}

.project-icon {
  width: 46%;
  height: auto;
  fill: none;
  stroke: var(--oxidized-copper);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-back {
  transform: rotateY(180deg);
  align-items: flex-start;
  justify-content: flex-end;
  padding: 28px;
  overflow: hidden;
  background-color: var(--dark-umber);
  background-image: radial-gradient(circle, rgba(196, 113, 74, 0.22) 1.5px, transparent 2px);
  background-size: 18px 18px;
  color: var(--warm-parchment);
  border: 1px solid rgba(212, 149, 107, 0.28);
}

.card-back h2 {
  position: relative;
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  line-height: 1;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--raw-sienna);
}

.card-back p {
  position: relative;
  margin: 0;
  font-size: clamp(0.8rem, 1.1vw, 0.95rem);
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: rgba(245, 230, 211, 0.78);
}

.mini-composition {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 42%;
  height: 35%;
  opacity: 0.8;
}

.mini-composition i { position: absolute; display: block; border: 1.5px solid var(--oxidized-copper); }
.mini-composition i:nth-child(1) { inset: 16% 0 0 16%; border-radius: 50% 50% 0 0; border-bottom: 0; }
.mini-composition i:nth-child(2) { inset: 36% 18% 10% 0; }
.mini-composition i:nth-child(3) { width: 38%; height: 38%; left: 6%; top: 2%; border-radius: 50%; }
.grid-mark i { border-radius: 0; }
.orbit-mark i { border-radius: 50%; }
.trace-mark i:nth-child(2) { transform: rotate(-18deg); }

.craft-arch > path { fill: var(--warm-parchment); }

.method-zone {
  min-height: 130vh;
  background: var(--warm-parchment);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12vh clamp(1.5rem, 6vw, 6rem);
}

.method-wrap {
  position: relative;
  width: min(760px, 100%);
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.method-copy {
  max-width: 52ch;
  margin-left: clamp(2.5rem, 8vw, 5rem);
}

.method-copy p {
  margin: 0 0 1.7em;
  font-size: clamp(1.18rem, 2.2vw, 1.72rem);
  line-height: 1.72;
  letter-spacing: 0.01em;
  color: rgba(61, 43, 31, 0.85);
}

.method-copy p:last-child { margin-bottom: 0; }
.method-copy em {
  font-style: normal;
  font-weight: 500;
  color: var(--fired-terracotta);
}

.method-bracket {
  position: absolute;
  left: 0;
  top: 50%;
  width: 80px;
  height: 620px;
  transform: translateY(-50%);
  overflow: visible;
}

.method-bracket path {
  fill: none;
  stroke: var(--oxidized-copper);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
}

.method-bracket.draw path {
  animation: drawBracket 2s ease-out forwards;
}

@keyframes drawBracket { to { stroke-dashoffset: 0; } }

.signal-zone {
  min-height: 70vh;
  background: var(--deep-clay);
  color: var(--warm-parchment);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12vh 1.5rem;
}

.signal-arches {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 120px;
  pointer-events: none;
}

.signal-arches path {
  stroke: rgba(196, 113, 74, 0.4);
  stroke-width: 1.5;
}

.signal-content { text-align: center; }
.signal-content h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.4rem, 6vw, 5.2rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--warm-parchment);
}

.signal-line {
  width: min(200px, 42vw);
  height: 1px;
  margin: 28px auto;
  background: rgba(196, 113, 74, 0.4);
}

.signal-content p {
  margin: 0;
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  line-height: 1.72;
  letter-spacing: 0.08em;
  color: rgba(245, 230, 211, 0.7);
}

@media (max-width: 840px) {
  .hero-mark { left: 36%; top: 41%; }
  .craft-zone { min-height: 190vh; }
  .craft-field { min-height: 166vh; }
  .card-large { width: 250px; height: 334px; }
  .card-medium { width: 210px; height: 280px; }
  .card-small { width: 164px; height: 218px; }
  .card-a { left: 28%; top: 8%; }
  .card-b { left: 4%; top: 31%; }
  .card-c { left: 54%; top: 42%; }
  .card-d { left: 30%; top: 61%; }
  .card-e { left: 8%; top: 82%; }
  .method-copy { margin-left: 3.3rem; }
  .method-bracket { left: -12px; }
}

@media (max-width: 560px) {
  .zone-indicator { right: 14px; }
  .hero-mark { left: 12vw; top: 42%; transform: translateY(-42%); }
  .hero-mark h1 { font-size: clamp(3rem, 18vw, 5rem); }
  .craft-field { width: calc(100vw - 28px); }
  .project-card { transform: none; }
  .card-a { left: 12%; top: 7%; }
  .card-b { left: 2%; top: 29%; }
  .card-c { left: 47%; top: 45%; }
  .card-d { left: 18%; top: 63%; }
  .card-e { left: 7%; top: 84%; }
  .method-wrap { min-height: 720px; }
  .method-copy { margin-left: 2.4rem; }
  .method-copy p { font-size: clamp(1.05rem, 5.2vw, 1.35rem); }
  .method-bracket { width: 54px; height: 700px; left: -16px; }
}