:root {
  color-scheme: dark;
  --bg: #04070f;
  --bg-soft: rgba(10, 16, 30, 0.76);
  --panel: rgba(13, 21, 37, 0.82);
  --panel-strong: rgba(18, 28, 48, 0.92);
  --border: rgba(188, 212, 255, 0.18);
  --border-strong: rgba(220, 232, 255, 0.34);
  --text: #eef4ff;
  --muted: #93a7c7;
  --accent: #86d7ff;
  --accent-strong: #ffd36f;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.38);
  --touch-button-size: 68px;
  --touch-button-radius: 22px;
  --touch-look-pad-size: 120px;
  --touch-look-thumb-size: 42px;
  --touch-controls-bottom-offset: 188px;
  --touch-look-bottom-offset: 168px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(circle at top, rgba(37, 58, 96, 0.28), transparent 34%),
    linear-gradient(180deg, #0a1020 0%, #050912 55%, #02040a 100%);
  color: var(--text);
  font-family: Bahnschrift, "Trebuchet MS", "Segoe UI", sans-serif;
}

body.is-looking #viewport,
body.is-looking #viewport canvas {
  cursor: grabbing;
}

body.is-dialog-open {
  overflow: hidden;
}

body.is-looking .instruction-chip {
  opacity: 0.68;
}

.app-shell {
  position: relative;
  width: 100%;
  height: 100%;
}

#viewport {
  position: absolute;
  inset: 0;
  cursor: default;
  touch-action: none;
}

#viewport canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: inherit;
}

#viewport::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 12px;
  height: 12px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 999px;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 16px rgba(134, 215, 255, 0.4);
  pointer-events: none;
}

.hud {
  position: absolute;
  top: 22px;
  left: 22px;
  right: 22px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  pointer-events: none;
}

.hud-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  pointer-events: auto;
}

.title-block,
.scene-status,
.file-toolbar,
.instruction-chip,
.picker-shell {
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.title-block {
  max-width: min(420px, 60vw);
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(16, 24, 42, 0.88), rgba(8, 14, 26, 0.72));
  box-shadow: var(--shadow);
  pointer-events: auto;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.title-block h1 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.title-block h1 {
  font-size: clamp(1.4rem, 2vw, 2rem);
}

.scene-status {
  min-width: 240px;
  max-width: min(320px, 50vw);
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(8, 14, 26, 0.74);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
  box-shadow: var(--shadow);
  text-align: right;
}

.file-toolbar {
  display: inline-flex;
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(8, 14, 26, 0.74);
  box-shadow: var(--shadow);
}

.file-action {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(19, 31, 53, 0.72);
  color: var(--text);
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    opacity 180ms ease;
}

.file-action:hover,
.file-action:focus-visible {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: rgba(28, 42, 70, 0.9);
}

.file-action:disabled {
  opacity: 0.46;
  cursor: wait;
}

.file-action svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.file-action .icon-exit {
  display: none;
}

.file-action.is-active .icon-enter {
  display: none;
}

.file-action.is-active .icon-exit {
  display: block;
}

.mobile-selection-toolbar {
  display: none;
}

.instruction-chip-touch {
  display: none;
}

.mobile-selection-action {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(11, 18, 31, 0.78);
  color: var(--text);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    opacity 180ms ease;
}

.mobile-selection-action:hover,
.mobile-selection-action:focus-visible {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: rgba(24, 39, 64, 0.92);
}

.mobile-selection-action:disabled {
  opacity: 0.38;
}

.mobile-selection-action.is-delete {
  border-color: rgba(255, 162, 162, 0.36);
}

.mobile-selection-action svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.scene-confirm {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 24px;
}

.scene-confirm[hidden] {
  display: none;
}

.scene-confirm-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 5, 12, 0.68);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.scene-confirm-panel {
  position: relative;
  width: min(460px, calc(100vw - 32px));
  padding: 22px;
  border: 1px solid var(--border-strong);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(17, 25, 41, 0.96), rgba(8, 14, 26, 0.94)),
    radial-gradient(circle at top left, rgba(134, 215, 255, 0.1), transparent 42%);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.46);
}

.scene-confirm-panel h2 {
  margin: 0 0 10px;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  letter-spacing: 0.02em;
}

.scene-confirm-panel .eyebrow {
  margin-bottom: 8px;
}

.scene-confirm-panel p:last-of-type {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.scene-confirm-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.scene-confirm-button {
  min-width: 112px;
  padding: 11px 15px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(19, 31, 53, 0.72);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.scene-confirm-button:hover,
.scene-confirm-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: rgba(28, 42, 70, 0.9);
}

.scene-confirm-button.is-primary {
  border-color: rgba(255, 211, 111, 0.42);
  background: linear-gradient(180deg, rgba(107, 78, 23, 0.88), rgba(72, 51, 14, 0.92));
}

.scene-confirm-button.is-primary:hover,
.scene-confirm-button.is-primary:focus-visible {
  border-color: rgba(255, 223, 151, 0.72);
  background: linear-gradient(180deg, rgba(132, 94, 27, 0.95), rgba(87, 62, 16, 0.96));
}

.instruction-chip {
  position: absolute;
  top: 122px;
  left: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(8, 14, 26, 0.62);
  box-shadow: var(--shadow);
  transition: opacity 180ms ease;
}

.instruction-chip span {
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.instruction-chip span + span::before {
  content: "/";
  margin-right: 10px;
  color: rgba(255, 255, 255, 0.28);
}

.picker-shell {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(15, 22, 37, 0.9), rgba(7, 12, 21, 0.82)),
    radial-gradient(circle at top left, rgba(134, 215, 255, 0.08), transparent 40%);
  box-shadow: var(--shadow);
}

.picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 12px;
}

.picker-header .eyebrow {
  margin-bottom: 0;
}

.picker-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: right;
}

.picker-frame {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
}

.scroll-control {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(19, 31, 53, 0.72);
  color: var(--text);
  font: inherit;
  font-size: 1.35rem;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.scroll-control:hover,
.scroll-control:focus-visible {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: rgba(28, 42, 70, 0.9);
}

.model-strip {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 4px 2px 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(160, 194, 255, 0.44) transparent;
  scroll-behavior: smooth;
}

.model-strip::-webkit-scrollbar {
  height: 10px;
}

.model-strip::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(160, 194, 255, 0.34);
}

.model-strip::-webkit-scrollbar-track {
  background: transparent;
}

.picker-card {
  flex: 0 0 min(220px, 42vw);
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(17, 25, 41, 0.94), rgba(11, 18, 31, 0.92)),
    radial-gradient(circle at top, rgba(134, 215, 255, 0.16), transparent 40%);
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.picker-card:hover,
.picker-card:focus-visible,
.picker-card.is-selected {
  transform: translateY(-3px);
  border-color: rgba(134, 215, 255, 0.56);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.26);
}

.picker-card.is-selected {
  box-shadow: 0 18px 46px rgba(134, 215, 255, 0.16);
}

.preview-shell {
  position: relative;
  height: 132px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background:
    radial-gradient(circle at top, rgba(134, 215, 255, 0.18), transparent 40%),
    linear-gradient(180deg, rgba(14, 21, 36, 0.92), rgba(7, 11, 19, 0.9));
}

.preview-shell::after {
  content: "";
  position: absolute;
  inset: auto 12px 10px;
  height: 22px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255, 211, 111, 0.3), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}

.preview-shell canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.preview-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.card-meta {
  display: block;
}

.card-name {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.mobile-controls {
  display: none;
}

.mobile-joystick-pad {
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.mobile-controls {
  position: absolute;
  inset: 0;
  z-index: 16;
  pointer-events: none;
}

.mobile-move-controls,
.mobile-look-controls {
  position: absolute;
  pointer-events: auto;
}

.mobile-move-controls {
  left: max(12px, env(safe-area-inset-left));
  bottom: calc(env(safe-area-inset-bottom) + var(--touch-controls-bottom-offset));
}

.mobile-look-controls {
  right: max(12px, env(safe-area-inset-right));
  bottom: calc(env(safe-area-inset-bottom) + var(--touch-look-bottom-offset));
}

.mobile-joystick-pad {
  position: relative;
  width: var(--touch-look-pad-size);
  height: var(--touch-look-pad-size);
  border: 1px solid rgba(188, 212, 255, 0.28);
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 30%, rgba(134, 215, 255, 0.16), transparent 48%),
    linear-gradient(180deg, rgba(16, 24, 42, 0.86), rgba(7, 12, 21, 0.8));
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.mobile-joystick-pad.is-active {
  border-color: rgba(134, 215, 255, 0.58);
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.38);
}

.mobile-joystick-ring {
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  pointer-events: none;
}

.mobile-joystick-thumb {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--touch-look-thumb-size);
  height: var(--touch-look-thumb-size);
  margin-left: calc(var(--touch-look-thumb-size) * -0.5);
  margin-top: calc(var(--touch-look-thumb-size) * -0.5);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.26), transparent 52%),
    linear-gradient(180deg, rgba(133, 185, 255, 0.5), rgba(64, 92, 140, 0.62));
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.24);
  pointer-events: none;
  transition: transform 80ms ease-out;
}

noscript {
  position: absolute;
  inset: 24px auto auto 24px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(64, 20, 20, 0.92);
  color: #ffe5e5;
}

@media (max-width: 900px) {
  .hud {
    flex-direction: column;
  }

  .hud-side {
    align-items: flex-start;
  }

  .scene-status {
    min-width: unset;
    max-width: min(100%, 520px);
    text-align: left;
  }

  .picker-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .picker-note {
    text-align: left;
  }

}

@media (max-width: 700px) {
  .instruction-chip {
    top: auto;
    bottom: 266px;
    left: 18px;
    right: 18px;
    border-radius: 22px;
  }

  .picker-shell {
    padding: 14px;
    border-radius: 24px;
  }

  .picker-frame {
    grid-template-columns: 1fr;
  }

  .scroll-control {
    display: none;
  }

  .picker-card {
    flex-basis: min(200px, 68vw);
  }

  .scene-confirm {
    padding: 16px;
  }

  .scene-confirm-panel {
    padding: 18px;
    border-radius: 20px;
  }

  .scene-confirm-actions {
    flex-direction: column;
  }

  .scene-confirm-button {
    width: 100%;
  }

}

@media (pointer: coarse) {
  .mobile-controls {
    display: block;
  }

  .mobile-selection-toolbar {
    position: fixed;
    top: max(14px, env(safe-area-inset-top));
    left: 0;
    right: 0;
    width: max-content;
    display: inline-flex;
    gap: 8px;
    margin: 0 auto;
    flex-wrap: nowrap;
    justify-content: center;
    pointer-events: auto;
    z-index: 18;
  }

  .instruction-chip-desktop {
    display: none;
  }

  .instruction-chip-touch {
    display: flex;
  }
}

@media (pointer: coarse) and (min-width: 901px) {
  :root {
    --touch-button-size: 76px;
    --touch-button-radius: 24px;
    --touch-look-pad-size: 138px;
    --touch-look-thumb-size: 46px;
    --touch-controls-bottom-offset: 208px;
    --touch-look-bottom-offset: 188px;
  }
}

@media (pointer: coarse) and (max-width: 900px) {
  .title-block {
    max-width: none;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .title-block h1,
  .instruction-chip,
  .scene-status,
  .picker-header {
    display: none;
  }

  .title-block .eyebrow {
    margin: 0;
    font-size: 0.72rem;
    letter-spacing: 0.16em;
  }

  .hud {
    top: 10px;
    left: 12px;
    right: 12px;
    gap: 10px;
    align-items: flex-start;
  }

  .hud-side {
    position: fixed;
    top: max(10px, env(safe-area-inset-top));
    right: max(12px, env(safe-area-inset-right));
    margin-left: auto;
    gap: 0;
    align-items: flex-end;
  }

  .file-toolbar {
    gap: 6px;
    padding: 6px;
    border-radius: 14px;
  }

  .file-action {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .file-action svg {
    width: 16px;
    height: 16px;
  }

  .picker-shell {
    left: 8px;
    right: 8px;
    bottom: 8px;
    padding: 8px;
    border-radius: 16px;
  }

  .picker-frame {
    gap: 8px;
  }

  .model-strip {
    gap: 8px;
    padding: 1px 0 4px;
  }

  .picker-card {
    gap: 4px;
    padding: 6px;
    border-radius: 14px;
  }

  .preview-shell {
    height: 62px;
    border-radius: 10px;
  }

  .preview-shell::after {
    inset: auto 8px 6px;
    height: 14px;
  }

  .card-name {
    font-size: 0.8rem;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  .hud {
    top: 12px;
    left: 12px;
    right: 12px;
    gap: 12px;
    align-items: flex-start;
  }

  .title-block {
    max-width: min(220px, 34vw);
    padding: 0;
    border-radius: 0;
  }

  .title-block h1 {
    font-size: clamp(1rem, 2.4vw, 1.25rem);
  }

  .eyebrow {
    font-size: 0.62rem;
    letter-spacing: 0.14em;
  }

  .mobile-selection-toolbar {
    top: max(12px, env(safe-area-inset-top));
    gap: 4px;
  }

  .mobile-selection-action {
    width: 32px;
    height: 32px;
    border-radius: 10px;
  }

  .mobile-selection-action svg {
    width: 14px;
    height: 14px;
  }

  .hud-side {
    top: max(12px, env(safe-area-inset-top));
    right: max(12px, env(safe-area-inset-right));
    gap: 8px;
  }

  .file-toolbar {
    gap: 6px;
    padding: 6px;
    border-radius: 14px;
  }

  .file-action {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  .file-action svg {
    width: 16px;
    height: 16px;
  }

  .scene-status {
    display: none;
  }

  .instruction-chip {
    display: none;
  }

  .picker-shell {
    left: 10px;
    right: 10px;
    bottom: 10px;
    padding: 6px 8px;
    border-radius: 14px;
  }

  .picker-frame {
    gap: 6px;
  }

  .scroll-control {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    font-size: 0.92rem;
  }

  .model-strip {
    gap: 6px;
    padding: 1px 0 3px;
  }

  .model-strip::-webkit-scrollbar {
    height: 4px;
  }

  .picker-card {
    flex-basis: min(126px, 24vw);
    gap: 3px;
    padding: 5px;
    border-radius: 12px;
  }

  .preview-shell {
    height: 48px;
    border-radius: 9px;
  }

  .preview-shell::after {
    inset: auto 6px 4px;
    height: 10px;
  }

  .card-name {
    font-size: 0.72rem;
  }
}

@media (pointer: coarse) and (orientation: landscape) and (max-height: 520px) {
  :root {
    --touch-button-size: 56px;
    --touch-button-radius: 18px;
    --touch-look-pad-size: 94px;
    --touch-look-thumb-size: 34px;
    --touch-controls-bottom-offset: 106px;
    --touch-look-bottom-offset: 92px;
  }

  .mobile-move-controls {
    left: max(10px, env(safe-area-inset-left));
  }

  .mobile-look-controls {
    right: max(10px, env(safe-area-inset-right));
  }

  .mobile-joystick-ring {
    inset: 10px;
  }
}