:root {
  color-scheme: light;
  --bg: #f6f1ff;
  --panel: #fffefd;
  --panel-cool: #edfaff;
  --panel-warm: #fff1f6;
  --panel-lilac: #f1ecff;
  --ink: #2b2540;
  --muted: #695f82;
  --soft: #958aac;
  --line: #342d4a;
  --shadow: #b7a7d9;
  --mint: #50d8bf;
  --mint-deep: #159a8f;
  --pink: #ff76a6;
  --pink-deep: #d94f82;
  --sky: #78aaff;
  --amber: #ffd36f;
  --lime: #a8df6a;
  --red: #d84863;
  --hard-shadow: 5px 5px 0 var(--shadow);
  font-family:
    "Noto Sans TC", "Microsoft JhengHei", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(52, 45, 74, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(52, 45, 74, 0.08) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px;
  color: var(--ink);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
}

.app {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 16px;
  min-height: 100vh;
  padding: 16px;
}

.stage,
.controls {
  border: 2px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  box-shadow: var(--hard-shadow);
}

.stage {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-width: 0;
  padding: 16px;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 2px 14px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 5px;
  color: var(--pink-deep);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  color: var(--ink);
  font-size: clamp(1.7rem, 2vw, 2.25rem);
  line-height: 1.05;
  text-shadow: 3px 3px 0 #ffe0ed;
}

h2 {
  font-size: 1rem;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  min-height: 0;
}

.preview-panel {
  display: grid;
  grid-template-rows: auto minmax(320px, 1fr);
  min-width: 0;
  border: 2px solid var(--line);
  border-radius: 7px;
  background: var(--panel-lilac);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 66px;
  padding: 12px 14px;
  border-bottom: 2px solid var(--line);
  background: var(--panel-cool);
}

.preview-output .panel-head {
  background: var(--panel-warm);
}

.badge {
  flex: 0 0 auto;
  border: 2px solid var(--line);
  border-radius: 5px;
  padding: 6px 9px;
  color: var(--muted);
  background: #ffffff;
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.badge-accent {
  color: #ffffff;
  background: var(--mint-deep);
}

.canvas-shell {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 0;
  padding: 18px;
  overflow: hidden;
  background-color: #fbf8ff;
  background-image:
    linear-gradient(45deg, rgba(52, 45, 74, 0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(52, 45, 74, 0.08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(52, 45, 74, 0.08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(52, 45, 74, 0.08) 75%);
  background-position:
    0 0,
    0 10px,
    10px -10px,
    -10px 0;
  background-size: 20px 20px;
}

#dropZone,
#pixelDropZone {
  display: block;
  overflow: hidden;
  padding: 0;
  text-align: left;
  cursor: grab;
}

.source-viewport,
.pixel-viewport {
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  margin: 0;
  transform-origin: 0 0;
  will-change: transform;
}

#dropZone.is-panning,
#pixelDropZone.is-panning {
  cursor: grabbing;
}

.canvas-shell.is-dragover {
  outline: 3px solid var(--pink);
  outline-offset: -10px;
}

.canvas-shell.is-selecting {
  outline: 3px solid var(--pink);
  outline-offset: -10px;
}

.canvas-shell.is-erasing {
  outline: 3px solid var(--mint-deep);
  outline-offset: -10px;
}

.canvas-shell.is-wanding {
  outline: 3px solid var(--pink);
  outline-offset: -10px;
}

canvas {
  display: block;
  max-width: 100%;
  border: 2px solid rgba(52, 45, 74, 0.24);
  background: transparent;
}

#sourceCanvas {
  width: auto;
  height: auto;
  max-width: none;
  max-height: none;
  box-sizing: border-box;
  object-fit: contain;
  transform-origin: 0 0;
}

#sourceCanvas.is-selection-mode {
  cursor: crosshair;
  touch-action: none;
}

#sourceCanvas.is-eraser-mode {
  cursor: cell;
  touch-action: none;
}

#pixelCanvas {
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  box-sizing: border-box;
}

.empty-state {
  position: absolute;
  inset: 18px;
  display: grid;
  place-content: center;
  gap: 7px;
  border: 2px dashed var(--pink);
  border-radius: 6px;
  color: var(--muted);
  text-align: center;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.62);
}

.empty-state strong {
  color: var(--ink);
  font-size: 1.05rem;
}

.empty-state span {
  font-size: 0.82rem;
}

.empty-state.is-hidden {
  display: none;
}

.status {
  min-height: 24px;
  margin: 12px 2px 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.status.is-error,
.mini-status.is-error {
  color: var(--red);
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: calc(100vh - 32px);
  padding: 12px;
  overflow: auto;
}

.control-group {
  display: grid;
  gap: 12px;
  padding: 12px;
  border: 2px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.control-hero {
  background: var(--panel-cool);
}

.ai-group {
  background: var(--panel-warm);
}

.ai-group-locked {
  background: #fff7fb;
}

.locked-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 0 10px;
  border: 2px solid var(--line);
  background: #ffffff;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.control-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 900;
}

.control-title span:last-child {
  color: var(--soft);
}

.control-subtitle {
  margin-top: 2px;
  font-size: 0.82rem;
}

.topbar-actions,
.control-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-actions {
  justify-content: stretch;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 13px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 900;
  letter-spacing: 0;
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease,
    opacity 0.12s ease;
}

.button:hover:not(:disabled) {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--shadow);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.button-primary {
  border: 2px solid var(--line);
  background: var(--pink);
  color: #ffffff;
}

.button-secondary {
  border: 2px solid var(--line);
  background: #ffffff;
  color: var(--ink);
}

.button.is-active {
  border-color: var(--line);
  background: var(--mint-deep);
  color: #ffffff;
}

.selection-actions .button:last-child.is-active {
  background: var(--pink);
}

.control-actions .button {
  flex: 1;
  min-width: 96px;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.chip,
.segmented span {
  min-height: 39px;
  border-radius: 6px;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 900;
  letter-spacing: 0;
}

.chip {
  border: 2px solid var(--line);
  background: #ffffff;
  cursor: pointer;
}

.chip:hover {
  background: #fff4ce;
}

.chip:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.chip.is-active,
.segmented input:checked + span {
  color: #ffffff;
  background: var(--mint-deep);
}

.size-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.size-fields label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 900;
}

.size-fields input,
.select-input,
.textarea-input {
  width: 100%;
  min-width: 0;
  border: 2px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 900;
}

.size-fields input,
.select-input {
  height: 40px;
  padding: 0 10px;
}

.textarea-input {
  resize: vertical;
  min-height: 86px;
  padding: 10px;
  line-height: 1.45;
}

.size-fields input:focus,
.select-input:focus,
.textarea-input:focus,
.range:focus {
  border-color: var(--pink);
  outline: 3px solid rgba(255, 118, 166, 0.2);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 900;
}

.toggle-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--pink);
}

#sourceCanvas.is-wand-mode {
  cursor: crosshair;
  touch-action: none;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.segmented-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.segmented label {
  min-width: 0;
}

.segmented input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented span {
  display: grid;
  place-items: center;
  width: 100%;
  border: 2px solid var(--line);
  background: #ffffff;
  cursor: pointer;
  text-align: center;
}

.range {
  width: 100%;
  accent-color: var(--pink);
}

.mini-status {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1.45;
}

.file-meta {
  display: grid;
  gap: 4px;
  min-height: 48px;
  padding: 10px;
  border: 2px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  overflow: hidden;
}

.file-meta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta span:first-child {
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 900;
}

.file-meta span:last-child {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

@media (max-width: 1180px) {
  .app {
    grid-template-columns: 1fr;
  }

  .controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-height: none;
  }
}

@media (max-width: 760px) {
  .app {
    padding: 10px;
  }

  .preview-grid,
  .controls {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    grid-template-rows: auto minmax(260px, 52vh);
  }

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

@media (max-width: 430px) {
  .stage,
  .controls {
    box-shadow: none;
  }

  .preset-grid,
  .size-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .button {
    padding: 0 10px;
  }
}