:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --panel: rgba(27, 29, 28, 0.94);
  --panel-border: rgba(255, 255, 255, 0.13);
  --text: #f3f1ec;
  --muted: #b8bbb6;
  --accent: #d6b56c;
  --accent-dark: #302919;
  --button: rgba(40, 43, 41, 0.9);
  --button-hover: rgba(57, 61, 58, 0.96);
  --focus: #f0c971;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #171817;
}

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

button,
select,
input {
  font: inherit;
}

button,
.button,
select,
input[type="range"] {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
.button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.app {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  min-height: 320px;
  overflow: hidden;
  isolation: isolate;
  background: #272a28;
}

.viewer,
.view-layer {
  position: absolute;
  inset: 0;
}

.viewer {
  --view-zoom: 1;
  transform: scale(var(--view-zoom));
  transform-origin: center;
  transition: transform 120ms ease;
}

.view-layer {
  overflow: hidden;
}

.model-view {
  z-index: 1;
  background: radial-gradient(circle at 50% 44%, #555a56 0, #343734 48%, #202220 100%);
}

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

#model-canvas:active {
  cursor: grabbing;
}

.photo-view {
  z-index: 0;
  display: none;
  background: #171817;
  touch-action: none;
  cursor: grab;
}

.photo-view:active {
  cursor: grabbing;
}

.app[data-mode="overlay"] .model-view {
  display: block;
  background: transparent;
}

.app[data-mode="overlay"] .photo-view,
.app[data-mode="photo"] .photo-view {
  display: block;
}

.app[data-mode="overlay"] .photo-view .empty-state {
  display: none;
}

.app[data-mode="photo"] .model-view {
  display: none;
}

.app[data-mode="model"] .photo-view {
  display: none;
}

.photo-view img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  pointer-events: none;
  will-change: transform;
}

.empty-state {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(88vw, 390px);
  padding: 24px;
  transform: translate(-50%, -50%);
  text-align: center;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  background: rgba(25, 27, 26, 0.86);
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.28);
}

.empty-state p:first-child {
  margin: 0 0 16px;
  font-size: 1.05rem;
}

.privacy-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.photo-reload-reminder {
  margin: -6px 0 13px !important;
  color: var(--accent);
  font-size: 0.82rem !important;
  overflow-wrap: anywhere;
}

.photo-reload-reminder[hidden] {
  display: none;
}

.grid-overlay {
  --grid-cell: 20%;
  --grid-opacity: 0.35;
  position: absolute;
  z-index: 5;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.82) 0, rgba(255, 255, 255, 0.82) 1px, rgba(0, 0, 0, 0.68) 1px, rgba(0, 0, 0, 0.68) 2px, transparent 2px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.82) 0, rgba(255, 255, 255, 0.82) 1px, rgba(0, 0, 0, 0.68) 1px, rgba(0, 0, 0, 0.68) 2px, transparent 2px);
  background-size: var(--grid-cell) var(--grid-cell);
  transition: opacity 120ms ease;
}

.grid-overlay.is-visible {
  opacity: var(--grid-opacity);
}

.photo-source-control {
  position: absolute;
  z-index: 19;
  top: calc(64px + var(--safe-top));
  left: 50%;
  display: none;
  width: min(430px, calc(100vw - 20px - var(--safe-left) - var(--safe-right)));
  align-items: center;
  gap: 6px;
  padding: 6px;
  transform: translateX(-50%);
  border: 1px solid var(--panel-border);
  border-radius: 11px;
  background: var(--panel);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
}

.app[data-mode="overlay"] .photo-source-control,
.app[data-mode="photo"] .photo-source-control {
  display: flex;
}

.photo-source-switch {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--panel-border);
  border-radius: 9px;
  background: rgba(17, 18, 17, 0.48);
}

.photo-source-button {
  flex: 1 1 0;
  min-width: 0;
  min-height: 38px;
  padding: 0 8px;
  overflow: hidden;
  border: 0;
  border-radius: 7px;
  color: var(--muted);
  background: transparent;
  font-size: 0.72rem;
  font-weight: 750;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.photo-source-button.is-active {
  color: #181816;
  background: var(--accent);
}

.photo-source-button:not(.is-available):not(.is-active) {
  color: #858983;
}

.compact-photo-action {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 0 9px;
  font-size: 0.7rem;
}

.overlay-photo-empty {
  position: absolute;
  z-index: 9;
  top: 50%;
  left: 50%;
  display: none;
  width: min(86vw, 370px);
  padding: 18px;
  transform: translate(-50%, -50%);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  text-align: center;
  background: rgba(24, 26, 25, 0.88);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.app[data-mode="overlay"] .overlay-photo-empty:not([hidden]) {
  display: block;
}

.overlay-photo-empty p {
  margin: 0 0 14px;
  color: #e7e6e0;
  font-size: 0.9rem;
  line-height: 1.4;
}

.top-bar,
.bottom-bar {
  position: absolute;
  z-index: 20;
  display: flex;
  gap: 8px;
  pointer-events: none;
}

.top-bar > *,
.bottom-bar > * {
  pointer-events: auto;
}

.top-bar {
  top: calc(10px + var(--safe-top));
  right: calc(10px + var(--safe-right));
  left: calc(10px + var(--safe-left));
  align-items: center;
  justify-content: space-between;
}

.top-actions {
  display: flex;
  gap: 6px;
}

.show-ui-button {
  position: absolute;
  z-index: 40;
  top: calc(8px + var(--safe-top));
  right: calc(8px + var(--safe-right));
  display: none;
  width: 46px;
  min-height: 46px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.25rem;
  background: rgba(27, 29, 28, 0.72);
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.25);
}

.app.ui-hidden .show-ui-button {
  display: block;
}

.app.ui-hidden .top-bar,
.app.ui-hidden .bottom-bar,
.app.ui-hidden .overlay-opacity-control,
.app.ui-hidden .photo-transform-control,
.app.ui-hidden .settings-panel,
.app.ui-hidden .first-use-hint,
.app.ui-hidden .overlay-photo-empty,
.app.ui-hidden .empty-state {
  display: none !important;
}

.bottom-bar {
  right: calc(10px + var(--safe-right));
  bottom: calc(10px + var(--safe-bottom));
  left: calc(10px + var(--safe-left));
  align-items: center;
  justify-content: center;
}

.button,
button {
  min-height: 44px;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: var(--text);
  background: var(--button);
  cursor: pointer;
  text-decoration: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  font-weight: 650;
}

button:hover,
.button:hover {
  background: var(--button-hover);
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

.button-primary {
  border-color: rgba(214, 181, 108, 0.7);
  color: #fff7e5;
  background: #655328;
}

.mode-switch,
.segmented-control {
  display: flex;
  padding: 3px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
}

.mode-button,
.appearance-button {
  min-height: 42px;
  padding: 0 15px;
  border: 0;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  font-weight: 700;
}

.mode-button.is-active,
.appearance-button.is-active {
  color: #181816;
  background: var(--accent);
}

.compact-button {
  padding: 0 13px;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
}

.action-button {
  flex: 0 1 auto;
  padding: 0 14px;
  font-size: 0.89rem;
  font-weight: 650;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
}

.tilt-controls {
  display: none;
  gap: 6px;
}

.app:not([data-mode="photo"])[data-transform-mode="tilt"] .tilt-controls {
  display: flex;
}

.overlay-opacity-control {
  position: absolute;
  z-index: 19;
  right: calc(10px + var(--safe-right));
  bottom: calc(64px + var(--safe-bottom));
  left: 50%;
  display: none;
  width: min(420px, calc(100vw - 20px - var(--safe-left) - var(--safe-right)));
  padding: 8px;
  transform: translateX(-50%);
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--panel-border);
  border-radius: 11px;
  background: var(--panel);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
}

.app[data-mode="overlay"] .overlay-opacity-control,
.app[data-mode="model"] .overlay-opacity-control {
  display: flex;
}

.overlay-transform-switch,
.overlay-opacity-row,
.overlay-depth-row,
.overlay-action-row,
.model-lock-row,
.model-scale-row,
.photo-rotation-row {
  display: flex;
  width: 100%;
  align-items: center;
}

.model-scale-row {
  justify-content: space-between;
  gap: 8px;
  padding: 0 3px;
  color: #e7e6e0;
  font-size: 0.76rem;
  font-weight: 700;
}

.model-scale-row output {
  min-width: 3.2em;
  text-align: center;
  color: var(--accent);
  font-size: 0.82rem;
}

.model-scale-row .fine-adjust-button {
  min-height: 34px;
  padding: 0 8px;
}

.model-scale-hint {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 500;
}

.model-lock-row {
  gap: 3px;
}

.model-lock-row > span {
  flex: 0 0 auto;
  margin-right: 2px;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 750;
  text-transform: uppercase;
}

.model-aspect-lock {
  flex: 1 1 0;
  min-width: 0;
  min-height: 34px;
  padding: 0 4px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 700;
}

.model-aspect-lock.is-locked {
  border-color: var(--accent);
  color: #181816;
  background: var(--accent);
}

.overlay-transform-switch {
  gap: 4px;
}

.overlay-transform-button {
  flex: 1;
  min-height: 42px;
  padding: 0 8px;
  border: 0;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  font-size: 0.8rem;
  font-weight: 750;
}

.overlay-transform-button.is-active {
  color: #181816;
  background: var(--accent);
}

.overlay-transform-help {
  width: 100%;
  min-height: 15px;
  margin: 0;
  color: var(--muted);
  text-align: center;
  font-size: 0.7rem;
  line-height: 1.3;
}

.overlay-opacity-row {
  gap: 9px;
}

.overlay-depth-row {
  display: none;
  gap: 9px;
}

.app[data-mode="overlay"][data-transform-mode="depth"] .overlay-depth-row {
  display: flex;
}

.overlay-opacity-row label,
.overlay-depth-row label,
.photo-rotation-row label {
  flex: 0 0 auto;
  color: #e7e6e0;
  font-size: 0.76rem;
  font-weight: 700;
}

.overlay-opacity-row input[type="range"],
.overlay-depth-row input[type="range"],
.photo-rotation-row input[type="range"] {
  flex: 1 1 auto;
  width: auto;
  min-width: 70px;
  margin: 0;
}

.overlay-opacity-row output,
.overlay-depth-row output,
.photo-rotation-row output {
  flex: 0 0 34px;
  font-size: 0.78rem;
}

.overlay-action-row {
  gap: 6px;
}

.overlay-action-row .button {
  flex: 1;
  min-height: 40px;
  padding: 0 10px;
  font-size: 0.78rem;
}

.overlay-action-row .button[aria-checked="true"],
.photo-transform-control .button[aria-checked="true"] {
  border-color: var(--accent);
  color: #181816;
  background: var(--accent);
}

.app:not([data-mode="photo"])[data-transform-mode="move"] #model-canvas {
  cursor: move;
}

.app[data-mode="overlay"][data-transform-mode="depth"] #model-canvas {
  cursor: ns-resize;
}

.app:not([data-mode="photo"])[data-transform-mode="tilt"] #model-canvas {
  cursor: ew-resize;
}

.photo-transform-control {
  position: absolute;
  z-index: 19;
  bottom: calc(64px + var(--safe-bottom));
  left: 50%;
  display: none;
  width: min(560px, calc(100vw - 20px - var(--safe-left) - var(--safe-right)));
  padding: 8px;
  transform: translateX(-50%);
  border: 1px solid var(--panel-border);
  border-radius: 11px;
  background: var(--panel);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.24);
  flex-wrap: wrap;
}

.app[data-mode="photo"] .photo-transform-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.photo-rotation-row {
  flex: 1;
  gap: 7px;
}

.fine-adjust-button {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 0 7px;
  border-radius: 7px;
  color: #e7e6e0;
  font-size: 0.68rem;
  font-weight: 700;
}

.photo-transform-control .button {
  flex: 0 0 auto;
  padding: 0 10px;
  font-size: 0.76rem;
}

.settings-panel {
  position: absolute;
  z-index: 30;
  right: calc(10px + var(--safe-right));
  bottom: calc(66px + var(--safe-bottom));
  width: min(410px, calc(100vw - 20px - var(--safe-left) - var(--safe-right)));
  max-height: min(70vh, calc(100dvh - 136px));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px;
  border: 1px solid var(--panel-border);
  border-radius: 15px;
  background: var(--panel);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.42);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 120ms ease, transform 120ms ease, visibility 120ms;
}

.settings-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.settings-header,
.control-row,
.select-row,
.range-row,
.button-row {
  display: flex;
  align-items: center;
}

.settings-header {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 2px;
}

.settings-header h2,
.settings-section h3 {
  margin: 0;
}

.settings-header h2 {
  font-size: 1.08rem;
}

.settings-section h3 {
  font-size: 0.92rem;
}

.settings-section {
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}

.settings-section:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.settings-section > h3 {
  margin-bottom: 10px;
}

.icon-button {
  width: 44px;
  padding: 0;
  border: 0;
  color: var(--muted);
  background: transparent;
  font-size: 1.6rem;
  line-height: 1;
}

.segmented-control {
  width: 100%;
  margin-bottom: 14px;
  box-shadow: none;
}

.appearance-button {
  flex: 1;
  padding: 0 8px;
  font-size: 0.85rem;
}

.control-row,
.select-row,
.range-row {
  justify-content: space-between;
  gap: 16px;
}

.control-row p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.lock-row {
  margin-top: 12px;
  color: #e4e4df;
  font-size: 0.84rem;
}

.select-row,
.range-row {
  margin-top: 14px;
  color: #e4e4df;
  font-size: 0.86rem;
}

select {
  min-width: 112px;
  min-height: 42px;
  padding: 0 34px 0 12px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  color: var(--text);
  background: #292c2a;
}

input[type="range"] {
  width: 100%;
  min-height: 36px;
  margin: 2px 0 0;
  accent-color: var(--accent);
}

output {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.switch-button {
  min-width: 62px;
  padding: 0 12px;
  font-weight: 750;
}

.switch-button[aria-checked="true"] {
  border-color: var(--accent);
  color: #181816;
  background: var(--accent);
}

.button-row {
  flex-wrap: wrap;
  gap: 8px;
}

.settings-photo-source-switch {
  margin-bottom: 10px;
}

.settings-photo-source-switch .photo-source-button {
  min-height: 40px;
}

.button-row .button {
  flex: 1 1 140px;
  padding: 0 10px;
  font-size: 0.82rem;
}

.saved-photo-name {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.workspace-actions {
  margin-top: 12px;
}

.workspace-actions .button {
  flex-basis: 100px;
}

.toast {
  position: absolute;
  z-index: 60;
  top: calc(72px + var(--safe-top));
  left: 50%;
  max-width: calc(100vw - 24px);
  padding: 10px 14px;
  transform: translate(-50%, -8px);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: var(--text);
  background: rgba(21, 23, 22, 0.94);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  font-size: 0.82rem;
  text-align: center;
  transition: opacity 120ms ease, transform 120ms ease, visibility 120ms;
}

.toast.is-visible {
  transform: translate(-50%, 0);
  opacity: 1;
  visibility: visible;
}

.app.ui-hidden .toast {
  top: calc(12px + var(--safe-top));
}

.first-use-hint {
  position: absolute;
  z-index: 15;
  top: calc(70px + var(--safe-top));
  left: 50%;
  display: flex;
  align-items: center;
  gap: 9px;
  max-width: calc(100vw - 24px);
  padding: 9px 8px 9px 13px;
  transform: translateX(-50%);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  color: #e9e8e2;
  background: rgba(21, 23, 22, 0.84);
  box-shadow: 0 7px 25px rgba(0, 0, 0, 0.22);
  font-size: 0.76rem;
  white-space: nowrap;
  transition: opacity 180ms ease, transform 180ms ease;
}

.first-use-hint.is-hidden {
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -6px);
}

.hint-close {
  min-width: 34px;
  min-height: 34px;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 1.3rem;
}

.status-card,
.error-card {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  width: min(86vw, 360px);
  padding: 15px 18px;
  transform: translate(-50%, -50%);
  border: 1px solid var(--panel-border);
  border-radius: 13px;
  text-align: center;
  background: rgba(22, 24, 23, 0.9);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.3);
}

.status-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
}

.status-card[hidden],
.error-card[hidden] {
  display: none;
}

.error-card strong,
.error-card span {
  display: block;
}

.error-card span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.4;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 899px) {
  .app.settings-open .overlay-opacity-control,
  .app.settings-open .photo-transform-control {
    display: none;
  }
}

@media (min-width: 900px) {
  .overlay-opacity-control {
    right: auto;
    left: calc(10px + var(--safe-left));
    transform: none;
  }

  .settings-panel {
    top: calc(70px + var(--safe-top));
    bottom: calc(66px + var(--safe-bottom));
    max-height: none;
  }
}

@media (max-width: 560px) {
  .compact-button {
    padding: 0 6px;
    font-size: 0.68rem;
  }

  .bottom-bar {
    gap: 6px;
  }

  .action-button {
    padding: 0 10px;
    font-size: 0.8rem;
  }

  .tilt-controls .action-button {
    padding: 0 9px;
    font-size: 0.75rem;
  }

  .photo-transform-control {
    align-items: stretch !important;
  }

  .photo-rotation-row {
    flex: 1 1 100%;
  }

  .photo-transform-control > .button {
    flex: 1 1 100%;
  }
}

@media (max-width: 380px) {
  .mode-button {
    padding: 0 10px;
    font-size: 0.78rem;
  }

  .compact-button {
    padding: 0 9px;
  }

  .bottom-bar {
    right: calc(6px + var(--safe-right));
    left: calc(6px + var(--safe-left));
  }

  .action-button,
  .tilt-controls .action-button {
    padding: 0 7px;
    font-size: 0.72rem;
  }

  .first-use-hint {
    white-space: normal;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  .top-bar {
    top: calc(6px + var(--safe-top));
  }

  .bottom-bar {
    bottom: calc(6px + var(--safe-bottom));
  }

  .first-use-hint {
    top: calc(58px + var(--safe-top));
  }

  .settings-panel {
    top: calc(58px + var(--safe-top));
    bottom: calc(58px + var(--safe-bottom));
    max-height: none;
  }
}

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