:root {
  color-scheme: dark;
  --bg: #0b0a13;
  --panel: rgba(21, 19, 33, 0.88);
  --ink: #f4f1ff;
  --muted: #aaa6c2;
  --line: rgba(221, 207, 255, 0.18);
  --accent: #8d7aff;
  --mint: #b9ffd4;
  --warning: #ffd28b;
  --danger: #ff9eaa;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Avenir Next", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background:
    radial-gradient(circle at 85% 8%, rgba(141, 122, 255, 0.2), transparent 30rem),
    radial-gradient(circle at 8% 92%, rgba(185, 255, 212, 0.08), transparent 24rem),
    var(--bg);
}

a { color: inherit; }

#canvas-ui-demo-root {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.static-page-heading {
  margin: 0;
  padding: 54px 0 34px;
  border-bottom: 1px solid var(--line);
  font-size: clamp(3.2rem, 9vw, 7.8rem);
  letter-spacing: -0.08em;
  line-height: 0.88;
}

.demo-topbar,
.demo-header,
.demo-footer { border-bottom: 1px solid var(--line); }

.demo-topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
}

.eyebrow,
.back,
.module-kind,
.status-label,
.demo-footer,
code {
  font-family: "SFMono-Regular", Consolas, monospace;
}

.eyebrow,
.status-label { color: var(--mint); letter-spacing: 0.1em; }

.eyebrow { margin: 0; font-size: 0.7rem; }

.back { color: var(--muted); font-size: 0.75rem; text-decoration: none; }

.back:hover { color: var(--ink); }

.demo-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 54px 0 34px;
}

.demo-header h1 {
  margin: 0;
  font-size: clamp(3.2rem, 9vw, 7.8rem);
  letter-spacing: -0.08em;
  line-height: 0.88;
}

.demo-header p { max-width: 650px; }

.demo-description {
  margin: 20px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.module-kind { margin: 0 0 8px; color: var(--warning); font-size: 0.72rem; }

.demo-layout {
  display: grid;
  grid-template-columns: minmax(190px, 0.32fr) minmax(0, 1fr);
  gap: 14px;
  padding-top: 14px;
}

.demo-panel,
.demo-stage-shell {
  border: 1px solid var(--line);
  background: var(--panel);
}

.demo-panel { padding: 20px; }

.status-label { display: block; font-size: 0.66rem; }

.factory-name {
  display: block;
  margin: 10px 0 24px;
  color: var(--ink);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.interaction-note,
.status {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

.status {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.status[data-state="ready"] { color: var(--mint); }
.status[data-state="error"] { color: var(--danger); }

.demo-diagnostic {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 210, 139, 0.34);
}

.demo-diagnostic .status-label { color: var(--warning); }

.demo-diagnostic p {
  margin: 12px 0 0;
  color: var(--warning);
  font-size: 0.78rem;
  line-height: 1.75;
}

.demo-diagnostic code {
  color: var(--ink);
  font-size: 0.92em;
}

.parameter-controls {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.parameter-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.parameter-reset,
.parameter-apply {
  border: 1px solid rgba(185, 255, 212, 0.45);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--mint);
  background: transparent;
  font: inherit;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.parameter-reset:hover,
.parameter-apply:hover { background: rgba(185, 255, 212, 0.1); }

.parameter-help {
  margin: 12px 0 16px;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.65;
}

.parameter-grid { display: grid; gap: 12px; }

.parameter-field,
.parameter-toggle {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.parameter-field > span {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.parameter-field output { color: var(--mint); }

.parameter-field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.parameter-field select,
.advanced-parameters textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  color: var(--ink);
  background: rgba(11, 10, 19, 0.72);
  font: inherit;
  font-size: 0.72rem;
}

.parameter-toggle {
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px;
}

.parameter-toggle input { accent-color: var(--accent); }

.advanced-parameters { margin-top: 18px; }

.advanced-parameters summary {
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  cursor: pointer;
}

.advanced-parameters textarea {
  min-height: 76px;
  margin: 12px 0 8px;
  resize: vertical;
}

.parameter-feedback {
  min-height: 1.4em;
  margin: 12px 0 0;
  color: var(--mint);
  font-size: 0.72rem;
  line-height: 1.5;
}

.parameter-feedback[data-state="error"] { color: var(--danger); }

.demo-stage-shell { padding: 10px; }

.demo-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 14px;
  border: 1px solid var(--line);
  background: var(--line);
}

.demo-copy-item {
  min-height: 136px;
  padding: 20px;
  background: var(--panel);
}

.demo-copy-item p {
  max-width: 620px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.demo-stage {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  isolation: isolate;
  background: #151322;
}

.demo-stage::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  content: "";
}

.source-canvas,
.effect-canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.source-canvas { z-index: 0; }
.effect-canvas { z-index: 3; pointer-events: none; }

.captured-content,
.fallback-content,
.under-content {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: clamp(20px, 6vw, 72px);
}

.captured-content {
  z-index: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.source-canvas > .captured-content {
  position: relative;
  inset: auto;
  display: block;
  place-items: initial;
  width: 100%;
  height: 100%;
  overflow: auto;
}
.under-content { z-index: 0; }
.fallback-content { z-index: 1; pointer-events: none; }
.input-texture { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.bend-content-stack {
  display: grid;
  gap: 24px;
  width: min(100%, 620px);
  padding: 72px 0;
}

.bend-content-stack .specimen { width: 100%; }

.bend-content-hero { min-height: 420px; }

.bend-content-panel { min-height: 300px; }

.bend-scroll-hint {
  margin: 28px 0 0;
  color: var(--mint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.bend-content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 28px;
}

.bend-content-grid span {
  padding: 14px 8px;
  border: 1px solid rgba(185, 255, 212, 0.35);
  color: var(--mint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  text-align: center;
}

.bend-content-end { margin-bottom: 72px; }

.particle-scroll-stack {
  display: grid;
  gap: 24px;
  width: min(100%, 620px);
  padding: 72px 0;
}

.particle-scroll-stack .specimen { width: 100%; }

.particle-scroll-panel { min-height: 300px; }

.particle-scroll-hint {
  margin: 28px 0 0;
  color: var(--mint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.particle-scroll-end { margin-bottom: 72px; }

.specimen {
  width: min(100%, 620px);
  padding: clamp(28px, 6vw, 76px) clamp(22px, 6vw, 66px);
  border: 1px solid rgba(185, 255, 212, 0.5);
  background: linear-gradient(135deg, rgba(44, 38, 83, 0.95), rgba(19, 42, 42, 0.92));
  box-shadow: 20px 20px 0 rgba(0, 0, 0, 0.18);
  text-align: center;
}

.specimen-mark {
  margin: 0 0 24px;
  color: var(--mint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
}

.specimen h2 {
  margin: 0;
  font-size: clamp(2.2rem, 8vw, 5.6rem);
  letter-spacing: -0.08em;
  line-height: 0.9;
}

.specimen p:last-child { margin: 24px 0 0; color: var(--muted); line-height: 1.7; }

.demo-scroll-space {
  min-height: 380px;
  padding: 90px 0 0;
  color: var(--muted);
  text-align: center;
  line-height: 1.8;
}

.demo-footer {
  margin-top: 18px;
  padding: 18px 0 0;
  border-bottom: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

code { color: var(--mint); font-size: 0.9em; }

@media (max-width: 760px) {
  #canvas-ui-demo-root { width: min(100% - 24px, 1180px); padding-top: 14px; }
  .demo-header { display: block; padding-top: 46px; }
  .module-kind { margin-top: 22px; }
  .demo-layout { grid-template-columns: 1fr; }
  .demo-copy { grid-template-columns: 1fr; }
  .demo-panel { padding: 16px; }
  .demo-stage { min-height: 430px; }
}