:root {
  --bg: #f7f3ec;
  --paper: #fffaf1;
  --ink: #262422;
  --muted: #7b7067;
  --line: #e1d6c8;
  --coral: #e96b4c;
  --coral-dark: #b84832;
  --teal: #1f8b91;
  --blue: #4f86c7;
  --moss: #526b3f;
  --clay: #bdb4aa;
  --shadow: 0 22px 54px rgba(64, 44, 28, 0.17);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(255, 255, 255, 0.92), transparent 34rem),
    linear-gradient(180deg, #efe8dd, var(--bg));
  color: var(--ink);
}

button {
  font: inherit;
}

.phone-shell {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 8px;
}

.app-screen {
  width: min(100%, 430px);
  height: min(820px, calc(100svh - 16px));
  min-height: 0;
  overflow: hidden;
  position: relative;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto auto;
  gap: 8px;
  padding: max(14px, env(safe-area-inset-top)) 14px max(12px, env(safe-area-inset-bottom));
  border: 1px solid rgba(94, 77, 58, 0.2);
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.96), rgba(246, 239, 229, 0.97)),
    var(--bg);
  box-shadow: var(--shadow);
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  margin: 0 0 4px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  max-width: 292px;
  margin: 0;
  font-size: clamp(20px, 6vw, 27px);
  line-height: 1.08;
  letter-spacing: 0;
}

.icon-button {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.icon-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.1;
}

.status-strip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 9px;
  padding: 8px 11px;
  border: 1px solid rgba(225, 214, 200, 0.88);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.67);
}

.status-strip span:first-child {
  color: var(--coral-dark);
  font-size: 12px;
  font-weight: 800;
}

.status-strip strong {
  overflow: hidden;
  font-size: 14px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#statusCount {
  min-width: 42px;
  padding: 5px 8px;
  border-radius: 999px;
  background: #23211f;
  color: #fffaf1;
  font-size: 12px;
  font-weight: 900;
  text-align: center;
}

.stage {
  position: relative;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, auto);
  align-content: center;
  gap: 8px;
}

.artwork-card,
.space-stage,
.model-stage,
.archive-card {
  grid-area: 1 / 1 / 3 / 2;
  transition: opacity 320ms ease, transform 320ms ease;
}

.artwork-card {
  grid-area: 1 / 1;
  position: relative;
  display: grid;
  place-items: center;
  padding: 9px;
  border: 1px solid rgba(225, 214, 200, 0.9);
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(255, 250, 241, 0.9));
  box-shadow: 0 14px 32px rgba(66, 48, 31, 0.1);
}

.artwork {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-height: min(35svh, 340px);
  border-radius: 20px;
  object-fit: cover;
  filter: drop-shadow(0 8px 18px rgba(88, 58, 31, 0.12));
}

.structure-overlay {
  position: absolute;
  inset: 9px;
  pointer-events: none;
}

.layer-outline {
  position: absolute;
  border: 2px solid rgba(255, 250, 241, 0.92);
  opacity: 0;
  filter: drop-shadow(0 8px 12px rgba(26, 38, 30, 0.22));
  transition: opacity 240ms ease, transform 320ms ease;
}

.layer-outline.selected {
  opacity: 0.75;
}

.layer-outline.active {
  opacity: 1;
  border-width: 3px;
}

.outline-trees {
  left: 8%;
  top: 3%;
  width: 82%;
  height: 49%;
  border-color: rgba(197, 220, 154, 0.95);
  border-radius: 42% 48% 28% 32%;
  background: rgba(82, 107, 63, 0.18);
}

.outline-house {
  left: 34%;
  top: 33%;
  width: 37%;
  height: 19%;
  border-color: rgba(255, 252, 238, 0.95);
  border-radius: 12px;
  background: rgba(255, 250, 241, 0.22);
}

.outline-water {
  left: 2%;
  top: 73%;
  width: 96%;
  height: 23%;
  border-color: rgba(103, 154, 167, 0.95);
  border-radius: 22% 22% 18px 18px;
  background: rgba(31, 139, 145, 0.2);
}

.structure-point {
  position: absolute;
  z-index: 3;
  width: 68px;
  min-height: 48px;
  display: grid;
  place-items: center;
  gap: 3px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
  transform: translate(-50%, -50%);
}

.layer-panel {
  grid-area: 2 / 1;
  min-height: 82px;
  display: grid;
  grid-template-columns: 78px 1fr;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border: 1px solid rgba(225, 214, 200, 0.9);
  border-radius: 20px;
  background: rgba(255, 250, 241, 0.86);
  box-shadow: 0 12px 24px rgba(66, 48, 31, 0.09);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 240ms ease, transform 240ms ease;
}

.app-screen[data-phase="select"] .layer-panel.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.layer-panel img {
  width: 78px;
  height: 68px;
  border-radius: 14px;
  object-fit: contain;
  background: #f4ede4;
}

.layer-panel p {
  margin: 0 0 4px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
}

.layer-panel strong {
  display: block;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.35;
}

.space-stage {
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
  padding: 12px;
  border: 1px solid rgba(225, 214, 200, 0.9);
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(255, 250, 241, 0.92));
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px) scale(0.98);
}

.space-copy {
  display: grid;
  gap: 4px;
}

.space-copy strong {
  font-size: 15px;
  line-height: 1.25;
}

.space-copy span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.space-stack {
  min-height: 0;
  display: grid;
  grid-template-rows: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.space-layer {
  min-height: 0;
  display: grid;
  grid-template-columns: 88px 1fr;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  text-align: left;
  box-shadow: 0 8px 20px rgba(66, 48, 31, 0.08);
}

.space-layer img {
  width: 88px;
  height: 72px;
  border-radius: 14px;
  object-fit: contain;
  background: #f4ede4;
}

.space-layer span {
  font-size: 14px;
  font-weight: 900;
  line-height: 1.25;
}

.space-layer.selected {
  border-color: var(--coral);
  background: rgba(233, 107, 76, 0.12);
}

.structure-point span {
  width: 30px;
  height: 30px;
  border: 3px solid rgba(255, 250, 241, 0.95);
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 0 rgba(233, 107, 76, 0.4), 0 8px 18px rgba(44, 62, 35, 0.28);
  animation: pulse 1.6s infinite;
}

.structure-point b {
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(255, 250, 241, 0.9);
  font-size: 11px;
  line-height: 1;
}

.structure-point.selected span {
  background: var(--moss);
  animation: none;
}

.structure-point.selected b {
  color: var(--moss);
}

.point-sky { left: 73%; top: 23%; }
.point-subject { left: 53%; top: 44%; }
.point-base { left: 30%; top: 82%; }

.model-stage {
  min-height: 420px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(225, 214, 200, 0.9);
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.54), rgba(230, 224, 216, 0.18)),
    radial-gradient(circle at 50% 48%, rgba(82, 107, 63, 0.18), transparent 11rem);
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px) scale(0.98);
}

.model-hint {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(255, 250, 241, 0.86);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.glb-viewer {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 390px;
  height: 48svh;
  max-height: 500px;
  --poster-color: transparent;
}

.model-fallback {
  display: none;
  position: absolute;
  inset: 48px 12px 12px;
  width: 100%;
  height: calc(100% - 60px);
  border-radius: 24px;
  object-fit: cover;
}

.model-stage.model-failed .glb-viewer {
  display: none;
}

.model-stage.model-failed .model-fallback {
  display: block;
}

.archive-card {
  max-height: 100%;
  overflow-y: auto;
  align-self: center;
  padding: 22px;
  border: 1px solid rgba(225, 214, 200, 0.92);
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(255, 250, 241, 0.98), rgba(248, 242, 232, 0.98));
  box-shadow: 0 18px 42px rgba(66, 48, 31, 0.13);
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px) scale(0.98);
}

.archive-code {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
}

.archive-card h2 {
  margin: 0 0 16px;
  font-size: 28px;
  line-height: 1;
}

.archive-card dl {
  display: grid;
  gap: 8px;
  margin: 0;
}

.archive-card div {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
}

.archive-card dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.archive-card dd {
  margin: 0;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.45;
}

.archive-media {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.archive-media::-webkit-scrollbar {
  display: none;
}

.archive-media img {
  flex: 0 0 46%;
  width: 46%;
  aspect-ratio: 1 / 0.78;
  border: 1px solid var(--line);
  border-radius: 14px;
  object-fit: cover;
}

.product-styles {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.product-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 9px;
}

.product-heading strong {
  font-size: 15px;
  font-weight: 900;
}

.product-heading span {
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
}

#packPreview {
  display: block;
  width: 100%;
  aspect-ratio: 1.34 / 1;
  border: 1px solid var(--line);
  border-radius: 16px;
  object-fit: contain;
  background: #eee6da;
}

.pack-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-top: 9px;
}

.pack-tab {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.pack-tab.active {
  border-color: var(--coral);
  background: rgba(233, 107, 76, 0.12);
  color: var(--coral-dark);
}

.app-screen[data-phase="layers"] .artwork-card,
.app-screen[data-phase="layers"] .layer-panel,
.app-screen[data-phase="model"] .artwork-card,
.app-screen[data-phase="model"] .layer-panel,
.app-screen[data-phase="archive"] .artwork-card {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-16px) scale(0.96);
}

.app-screen[data-phase="layers"] .space-stage,
.app-screen[data-phase="model"] .model-stage {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.app-screen[data-phase="archive"] .archive-card {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.step {
  min-width: 0;
  display: grid;
  justify-items: center;
  gap: 5px;
  padding: 8px 4px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
}

.step span {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(38, 36, 34, 0.08);
}

.step.active {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.58);
}

.step.active span,
.step.done span {
  background: var(--coral);
  color: white;
}

.actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px;
}

.primary-action,
.secondary-action,
.tertiary-action {
  width: 100%;
  border: 0;
  border-radius: 17px;
  font-weight: 900;
}

.primary-action {
  grid-column: 1 / -1;
  min-height: 54px;
  background: var(--ink);
  color: white;
  box-shadow: 0 14px 24px rgba(38, 36, 34, 0.18);
}

.secondary-action,
.tertiary-action {
  min-height: 34px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--teal);
  font-size: 13px;
}

.tertiary-action[hidden] {
  display: none;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(233, 107, 76, 0.34), 0 8px 18px rgba(129, 59, 42, 0.24); }
  70% { box-shadow: 0 0 0 13px rgba(233, 107, 76, 0), 0 8px 18px rgba(129, 59, 42, 0.24); }
  100% { box-shadow: 0 0 0 0 rgba(233, 107, 76, 0), 0 8px 18px rgba(129, 59, 42, 0.24); }
}

@media (max-height: 720px) {
  .app-screen {
    gap: 8px;
    padding-top: 12px;
    padding-bottom: 10px;
    border-radius: 22px;
  }

  h1 {
    font-size: 20px;
  }

  .artwork {
    max-height: 31svh;
  }

  .layer-panel {
    min-height: 70px;
    grid-template-columns: 66px 1fr;
  }

  .layer-panel img {
    width: 66px;
    height: 58px;
  }

  .space-layer {
    grid-template-columns: 74px 1fr;
  }

  .space-layer img {
    width: 74px;
    height: 60px;
  }

  .model-stage {
    min-height: 338px;
  }

  .glb-viewer {
    min-height: 320px;
    height: 42svh;
  }

  .archive-card {
    padding: 16px;
  }

  .archive-card h2 {
    font-size: 24px;
    margin-bottom: 10px;
  }
}

@media (min-width: 620px) {
  .app-screen {
    height: min(820px, calc(100svh - 16px));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}