:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f3efe5;
  background: #080a0e;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

button,
select {
  color: inherit;
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 50% -20%, rgba(108, 127, 160, 0.18), transparent 45%),
    #080a0e;
}

.topbar {
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(227, 215, 181, 0.16);
  background: rgba(11, 14, 20, 0.92);
  backdrop-filter: blur(18px);
}

.title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.controls-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.controls-toggle-icon {
  width: 12px;
  color: #d6b860;
  font-size: 16px;
  line-height: 1;
}

.eyebrow {
  margin: 0 0 3px;
  color: #b8a979;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(20px, 2.2vw, 30px);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.toolbar {
  display: flex;
  flex: 1 1 720px;
  flex-wrap: wrap;
  min-width: 0;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 8px;
}

.toolbar label {
  display: grid;
  flex: 1 1 110px;
  min-width: 100px;
  gap: 4px;
  color: #9da3ad;
  font-size: 11px;
  letter-spacing: 0.04em;
}

select,
button {
  height: 34px;
  border: 1px solid rgba(227, 215, 181, 0.2);
  border-radius: 7px;
  background: #171b23;
  outline: none;
}

select {
  width: 100%;
  min-width: 0;
  padding: 0 28px 0 10px;
}

button {
  padding: 0 13px;
  cursor: pointer;
}

button:hover,
select:hover {
  border-color: rgba(218, 186, 102, 0.62);
  background: #202630;
}

button:focus-visible,
select:focus-visible {
  outline: 2px solid #d6b860;
  outline-offset: 2px;
}

.viewport-shell {
  position: relative;
  min-height: 0;
}

#scene {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#scene:active {
  cursor: grabbing;
}

#scene.camera-target {
  cursor: move;
}

.status-panel,
.hint,
.loading {
  position: absolute;
  pointer-events: none;
  border: 1px solid rgba(227, 215, 181, 0.14);
  background: rgba(10, 13, 18, 0.76);
  backdrop-filter: blur(12px);
}

.status-panel {
  top: 16px;
  left: 16px;
  display: grid;
  gap: 4px;
  max-width: calc(100% - 32px);
  padding: 9px 12px;
  border-radius: 8px;
  color: #d8d2c2;
  font-size: 12px;
}

#performance {
  color: #89909b;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
}

.hint {
  bottom: 16px;
  left: 50%;
  padding: 8px 12px;
  border-radius: 999px;
  color: #aeb4bc;
  font-size: 12px;
  transform: translateX(-50%);
  white-space: nowrap;
}

.loading {
  z-index: 4;
  top: 50%;
  left: 50%;
  padding: 12px 16px;
  border-radius: 9px;
  transform: translate(-50%, -50%);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 16px;
  border-top: 1px solid rgba(227, 215, 181, 0.12);
  color: #777f8a;
  background: #0b0e14;
  font-size: 11px;
}

footer a {
  color: #bba96e;
}

.lil-gui.root {
  --background-color: rgba(16, 20, 27, 0.94);
  --widget-color: #252c37;
  --hover-color: #303946;
  --focus-color: #3b4655;
  --text-color: #ede8dc;
  --number-color: #e1c56e;
  top: 98px;
  right: 16px;
}

.pack-controls[hidden] {
  display: none;
}

.pack-controls {
  position: absolute;
  bottom: max(12px, env(safe-area-inset-bottom));
  left: 50%;
  display: grid;
  gap: 8px;
  width: min(440px, calc(100% - 24px));
  padding: 10px 12px;
  border: 1px solid rgba(227, 215, 181, 0.22);
  border-radius: 12px;
  background: rgba(10, 13, 18, 0.9);
  backdrop-filter: blur(12px);
  transform: translateX(-50%);
  text-align: center;
}

#pack-status {
  color: #d8d2c2;
  font-size: 12px;
}

#pack-tear {
  appearance: none;
  width: 100%;
  height: 3px;
  border: 0;
  border-radius: 2px;
  overflow: hidden;
  background: #293039;
  accent-color: #bba36a;
}

#pack-tear::-webkit-progress-bar {
  background: #293039;
}

#pack-tear::-webkit-progress-value {
  background: #bba36a;
}

#pack-tear::-moz-progress-bar {
  background: #bba36a;
}

.pack-actions {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 8px;
}

.pack-actions button {
  min-height: 44px;
  height: auto;
  padding: 8px 12px;
}

#pack-primary {
  border-color: #9b8750;
  background: #393222;
  color: #f5e5b4;
  font-weight: 600;
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

.pack-mode .toolbar > :not(:first-child) {
  display: none;
}

.pack-mode .toolbar {
  flex: 0 1 180px;
}

.pack-mode .hint {
  bottom: 118px;
  max-width: calc(100% - 24px);
  text-align: center;
  white-space: normal;
}

.pack-mode .status-panel {
  max-width: min(440px, calc(100% - 32px));
}

@media (max-width: 1120px) {
  .topbar {
    align-items: flex-start;
  }

  .toolbar {
    flex-basis: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 880px) {
  .topbar {
    gap: 10px;
    padding: 10px 12px;
  }

  .title-row {
    width: 100%;
  }

  .controls-toggle {
    display: inline-flex;
  }

  .toolbar {
    width: 100%;
    justify-content: flex-start;
  }

  .topbar.controls-collapsed {
    min-height: 0;
  }

  .topbar.controls-collapsed .toolbar {
    display: none;
  }

  .toolbar label {
    flex-basis: calc(33.333% - 6px);
  }

  .toolbar button {
    flex: 1 1 120px;
  }

  .hint {
    bottom: 10px;
    max-width: calc(100% - 24px);
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .lil-gui.root {
    top: 210px;
  }

  .compact-controls .lil-gui.root {
    top: 74px;
  }
}

@media (max-width: 560px) {
  .topbar {
    gap: 8px;
  }

  .toolbar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .toolbar label {
    width: 100%;
    min-width: 0;
  }

  .toolbar button {
    width: 100%;
    min-width: 0;
    padding-inline: 8px;
  }

  .lil-gui.root {
    top: 288px;
  }

  .pack-mode .toolbar {
    display: flex;
  }

  .pack-mode .status-panel {
    top: 8px;
    left: 12px;
    padding: 6px 9px;
    font-size: 10px;
  }

  .pack-mode #performance {
    font-size: 9px;
  }

  .pack-mode .hint {
    bottom: 114px;
    padding: 5px 9px;
    font-size: 10px;
  }

  .pack-controls {
    gap: 6px;
    padding: 8px;
  }

  #pack-status {
    font-size: 11px;
  }

  .pack-actions {
    gap: 6px;
  }

  .pack-actions button {
    padding-inline: 10px;
    font-size: 12px;
  }
}

@media (max-height: 540px) and (min-aspect-ratio: 4/3) {
  .pack-controls {
    right: 12px;
    left: auto;
    width: min(280px, 32vw);
    padding: 8px;
    transform: none;
  }

  .pack-actions {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .pack-actions button {
    padding-inline: 8px;
    font-size: 12px;
  }

  #pack-primary {
    grid-row: 1;
    grid-column: 1 / -1;
  }

  #pack-status {
    font-size: 11px;
  }

  .pack-mode .hint {
    right: 12px;
    bottom: 170px;
    left: auto;
    width: min(280px, 32vw);
    font-size: 10px;
    transform: none;
  }

  .pack-mode .status-panel {
    max-width: 28vw;
    font-size: 10px;
  }
}