:root {
  color-scheme: dark;
  --bg: #0e1513;
  --panel: rgba(18, 29, 25, 0.78);
  --panel-border: rgba(190, 222, 207, 0.16);
  --text: #edf5f0;
  --muted: #a7bab1;
  --accent: #e4b96d;
  --accent-soft: rgba(228, 185, 109, 0.16);
  --green: #8ed4b2;
  --danger: #ffb2a5;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
}

body {
  color: var(--text);
  overscroll-behavior: none;
}

button,
input {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

.app-shell {
  position: relative;
  width: 100vw;
  height: 100dvh;
  min-height: 560px;
  isolation: isolate;
  overflow: hidden;
}

#scene {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
  outline: none;
}

#scene.is-dragging {
  cursor: grabbing;
}

.ambient-noise {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.12;
  mix-blend-mode: soft-light;
  background-image:
    radial-gradient(circle at 20% 15%, rgba(255, 255, 255, 0.18) 0 0.6px, transparent 0.9px),
    radial-gradient(circle at 75% 70%, rgba(255, 255, 255, 0.12) 0 0.5px, transparent 0.8px);
  background-size: 5px 5px, 7px 7px;
}

.site-head {
  position: absolute;
  z-index: 3;
  top: max(22px, env(safe-area-inset-top));
  left: max(24px, env(safe-area-inset-left));
  max-width: min(430px, calc(100vw - 48px));
  pointer-events: none;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.38);
}

.eyebrow,
.panel-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.16em;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 7px;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.lead {
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(0.82rem, 1.4vw, 0.98rem);
  line-height: 1.65;
}

.status-strip {
  position: absolute;
  z-index: 3;
  top: max(24px, env(safe-area-inset-top));
  right: max(24px, env(safe-area-inset-right));
  display: grid;
  grid-template-columns: repeat(4, minmax(70px, auto));
  overflow: hidden;
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  background: rgba(11, 20, 17, 0.62);
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(16px);
}

.status-item {
  display: grid;
  gap: 3px;
  min-width: 78px;
  padding: 10px 13px;
  border-left: 1px solid var(--panel-border);
}

.status-item:first-child {
  border-left: 0;
}

.status-item span {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.status-item strong {
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}

#motion-value[data-state="flow"] {
  color: var(--accent);
}

#motion-value[data-state="rest"] {
  color: var(--green);
}

#motion-value[data-state="pause"] {
  color: var(--muted);
}

.drag-hint {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  color: rgba(238, 246, 241, 0.88);
  background: rgba(10, 18, 15, 0.54);
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.2);
  font-size: 0.74rem;
  transform: translateX(-50%);
  pointer-events: none;
  transition: opacity 240ms ease, transform 240ms ease;
  backdrop-filter: blur(12px);
}

.drag-hint span {
  color: var(--accent);
  font-size: 1rem;
}

.drag-hint.is-hidden {
  opacity: 0;
  transform: translate(-50%, 8px);
}

.control-panel {
  position: absolute;
  z-index: 4;
  right: max(24px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  width: min(330px, calc(100vw - 48px));
  padding: 17px;
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(20px) saturate(1.1);
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 17px;
}

.panel-kicker {
  margin-bottom: 4px;
}

.panel-head h2 {
  margin-bottom: 0;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.range-control {
  margin-bottom: 15px;
}

.range-control label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.72rem;
}

.range-control output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  height: 18px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 2px;
}

.button {
  min-height: 39px;
  padding: 8px 11px;
  border: 1px solid rgba(220, 238, 229, 0.15);
  border-radius: 11px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
  font-size: 0.72rem;
  font-weight: 680;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.button:hover {
  border-color: rgba(228, 185, 109, 0.42);
  background: rgba(228, 185, 109, 0.1);
}

.button:active {
  transform: translateY(1px);
}

.button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.button-primary {
  width: 100%;
  margin-top: 9px;
  border-color: rgba(228, 185, 109, 0.38);
  color: #1a1710;
  background: linear-gradient(135deg, #efce8a, #dba755);
  box-shadow: 0 10px 26px rgba(217, 161, 75, 0.12);
}

.button-primary:hover {
  border-color: rgba(255, 238, 197, 0.8);
  background: linear-gradient(135deg, #f4d99e, #e2b365);
}

.button-primary.is-active {
  color: #102019;
  background: linear-gradient(135deg, #a7e1c5, #73bd99);
}

.button-quiet {
  min-height: 32px;
  padding: 6px 9px;
  white-space: nowrap;
  font-size: 0.66rem;
}

.key-help {
  margin: 12px 1px 0;
  color: rgba(173, 192, 182, 0.72);
  font-size: 0.61rem;
  line-height: 1.55;
}

.error-box {
  position: absolute;
  z-index: 8;
  left: 50%;
  top: 50%;
  width: min(480px, calc(100vw - 40px));
  margin: 0;
  padding: 16px 18px;
  border: 1px solid rgba(255, 178, 165, 0.4);
  border-radius: 14px;
  color: var(--danger);
  background: rgba(50, 17, 15, 0.92);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  transform: translate(-50%, -50%);
}

@media (max-width: 880px) {
  .status-strip {
    top: auto;
    right: auto;
    left: max(16px, env(safe-area-inset-left));
    bottom: max(214px, calc(env(safe-area-inset-bottom) + 198px));
    grid-template-columns: repeat(4, 1fr);
    width: min(420px, calc(100vw - 32px));
  }

  .status-item {
    min-width: 0;
    padding: 8px 9px;
  }

  .control-panel {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    left: max(12px, env(safe-area-inset-left));
    width: auto;
    padding: 13px;
    border-radius: 17px;
  }

  .panel-head {
    margin-bottom: 10px;
  }

  .range-control {
    display: grid;
    grid-template-columns: 110px 1fr;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
  }

  .range-control label {
    display: grid;
    grid-template-columns: 1fr auto;
    margin: 0;
  }

  .button-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .button {
    min-height: 36px;
    padding: 7px 6px;
  }

  .button-primary {
    margin-top: 7px;
  }

  .key-help {
    display: none;
  }

  .drag-hint {
    bottom: 282px;
  }
}

@media (max-width: 580px) {
  .app-shell {
    min-height: 520px;
  }

  .site-head {
    top: max(14px, env(safe-area-inset-top));
    left: max(16px, env(safe-area-inset-left));
  }

  .eyebrow {
    font-size: 0.57rem;
  }

  h1 {
    font-size: 1.42rem;
  }

  .lead {
    max-width: 260px;
    font-size: 0.72rem;
  }

  .status-strip {
    bottom: max(225px, calc(env(safe-area-inset-bottom) + 209px));
  }

  .status-item:nth-child(3) {
    display: none;
  }

  .status-strip {
    grid-template-columns: repeat(3, 1fr);
  }

  .range-control {
    grid-template-columns: 104px 1fr;
  }

  .button-grid {
    grid-template-columns: 1fr 1fr;
  }

  .drag-hint {
    bottom: 315px;
    max-width: calc(100vw - 30px);
    white-space: nowrap;
  }
}

@media (max-height: 680px) and (min-width: 881px) {
  .control-panel {
    bottom: 14px;
    padding: 13px;
  }

  .panel-head {
    margin-bottom: 9px;
  }

  .range-control {
    margin-bottom: 9px;
  }

  .key-help {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .drag-hint,
  .button {
    transition: none;
  }
}

/* haijinlab prototype wrapper additions */
.info-drawer {
  position: absolute;
  z-index: 4;
  top: 132px;
  left: max(24px, env(safe-area-inset-left));
  width: min(320px, calc(100vw - 48px));
  overflow: hidden;
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  color: var(--text);
  background: rgba(11, 20, 17, 0.66);
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(16px);
}

.info-drawer summary {
  padding: 9px 12px;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  cursor: pointer;
  list-style: none;
}

.info-drawer summary::-webkit-details-marker {
  display: none;
}

.info-drawer summary::after {
  content: "+";
  float: right;
  color: var(--muted);
  font-size: 0.85rem;
}

.info-drawer[open] summary::after {
  content: "−";
}

.info-drawer-body {
  padding: 10px 12px 12px;
  border-top: 1px solid var(--panel-border);
}

.info-drawer-body p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.55;
}

.info-drawer-body p.model-note {
  color: var(--text);
}

.info-drawer-body a {
  color: var(--accent);
  font-size: 0.67rem;
  text-decoration: none;
}

.info-drawer-body a:hover {
  text-decoration: underline;
}

@media (max-width: 580px) {
  .info-drawer {
    top: 94px;
    left: max(16px, env(safe-area-inset-left));
    width: min(292px, calc(100vw - 32px));
  }

  .info-drawer summary {
    padding: 7px 10px;
    font-size: 0.64rem;
  }

  .info-drawer-body {
    padding: 9px 10px 10px;
  }

  .info-drawer-body p,
  .info-drawer-body a {
    font-size: 0.62rem;
  }
}
@media (max-width: 580px) {
  .status-strip {
    bottom: max(286px, calc(env(safe-area-inset-bottom) + 270px));
  }

  .drag-hint {
    bottom: max(340px, calc(env(safe-area-inset-bottom) + 324px));
  }
}

/* Common haijinlab shell additions: keep the immersive canvas intact. */
.site-brandbar {
  position: absolute;
  z-index: 5;
  top: max(16px, env(safe-area-inset-top));
  left: max(24px, env(safe-area-inset-left));
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  pointer-events: auto;
}

.site-brandbar .brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  text-decoration: none;
}

.site-brandbar .brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--green);
  color: var(--green);
  background: rgba(8, 14, 12, 0.72);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 800;
}

.site-brandbar .brand strong,
.site-brandbar .brand small {
  display: block;
}

.site-brandbar .brand strong {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.site-brandbar .brand small {
  color: var(--muted);
  font-size: 0.57rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.site-nav a {
  padding: 5px 8px;
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  color: var(--muted);
  background: rgba(8, 14, 12, 0.52);
  font-size: 0.59rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

.site-head {
  top: max(84px, calc(env(safe-area-inset-top) + 68px));
}

.info-drawer {
  top: 194px;
}

.site-footer {
  position: absolute;
  z-index: 4;
  left: max(24px, env(safe-area-inset-left));
  bottom: max(24px, env(safe-area-inset-bottom));
  display: grid;
  gap: 5px;
  width: min(430px, calc(100vw - 48px));
  padding: 8px 11px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  color: rgba(238, 246, 241, 0.66);
  background: rgba(11, 20, 17, 0.58);
  box-shadow: 0 14px 42px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(14px);
  font-size: 0.58rem;
  line-height: 1.35;
  pointer-events: auto;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

@media (max-width: 880px) {
  .site-brandbar {
    left: max(16px, env(safe-area-inset-left));
  }

  .site-head {
    top: max(82px, calc(env(safe-area-inset-top) + 66px));
  }

  .info-drawer {
    top: 190px;
  }

  .site-footer {
    left: max(16px, env(safe-area-inset-left));
    bottom: max(438px, calc(env(safe-area-inset-bottom) + 422px));
    width: min(430px, calc(100vw - 32px));
  }
}

@media (max-width: 580px) {
  .site-brandbar {
    top: max(11px, env(safe-area-inset-top));
    right: max(16px, env(safe-area-inset-right));
    gap: 6px 10px;
  }

  .site-brandbar .brand-mark {
    width: 30px;
    height: 30px;
  }

  .site-brandbar .brand strong {
    font-size: 0.65rem;
  }

  .site-brandbar .brand small {
    font-size: 0.51rem;
  }

  .site-nav {
    gap: 5px;
  }

  .site-nav a {
    padding: 4px 7px;
    font-size: 0.54rem;
  }

  .site-head {
    top: max(78px, calc(env(safe-area-inset-top) + 64px));
  }

  .info-drawer {
    top: 176px;
  }

  .site-footer {
    right: max(16px, env(safe-area-inset-right));
    bottom: max(438px, calc(env(safe-area-inset-bottom) + 422px));
    width: auto;
    padding: 7px 9px;
    font-size: 0.55rem;
  }
}

@media (max-height: 680px) and (max-width: 580px) {
  .site-footer {
    bottom: max(330px, calc(env(safe-area-inset-bottom) + 314px));
  }

  .site-footer > span {
    display: none;
  }
}


@media (min-width: 881px) and (max-width: 1100px) {
  .site-footer {
    bottom: max(80px, calc(env(safe-area-inset-bottom) + 64px));
  }
}

@media (min-height: 681px) and (max-height: 830px) and (max-width: 580px) {
  .site-footer {
    bottom: max(420px, calc(env(safe-area-inset-bottom) + 404px));
  }
}