/**
 * 拼豆应用 · 可爱风格主题（与 Figma 导出 / docs 设计说明一致）
 * 供 index.html 引用，全站使用 CSS 变量便于后续换肤
 */
:root {
  --color-primary: #e87b9a;
  --color-primary-light: #ffe4ec;
  --color-bg-page: #fff9fb;
  --color-bg-card: #ffffff;
  --color-bg-muted: #f5f0f2;
  --color-border: #e8dee2;
  --color-border-focus: #e87b9a;
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --color-text-hint: #999999;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100dvh;
}

body {
  font-family: system-ui, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0.75rem;
  padding-bottom: env(safe-area-inset-bottom);
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  background-color: var(--color-bg-page);
  color: var(--color-text-primary);
}

.page-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  flex-shrink: 0;
  margin-bottom: 1rem;
}

.page-header-text {
  flex: 1;
  min-width: 0;
}

.page-header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  min-width: 0;
}

.page-header-top h1 {
  min-width: 0;
}

.lang-switch {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
  padding: 2px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-muted);
}

.lang-btn {
  margin: 0;
  padding: 0.2rem 0.45rem;
  font-size: 0.72rem;
  line-height: 1.2;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-secondary);
  font-family: inherit;
}

.lang-btn:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-card);
}

.lang-btn.active {
  color: var(--color-text-primary);
  background: var(--color-bg-card);
  font-weight: 600;
  box-shadow: 0 0 0 1px var(--color-border);
}

.page-header .tagline {
  margin: 0.28rem 0 0 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  font-weight: 400;
}

.app-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.app-logo svg {
  display: block;
}

h1 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
  flex-shrink: 0;
  color: var(--color-text-primary);
  line-height: 1.3;
}

@media (min-width: 400px) {
  h1 {
    font-size: 1.35rem;
  }
}

.intro {
  margin: 0.35rem 0 0.5rem 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.upload {
  position: relative;
  border: 2px dashed var(--color-border);
  padding: 1rem;
  text-align: center;
  margin: 0 0 0.5rem 0;
  cursor: pointer;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.upload-hint {
  position: relative;
  z-index: 0;
  pointer-events: none;
}

/**
 * 铺满上传区、透明，由浏览器原生处理点击选文件（比隐藏 input + JS .click() 兼容性好）
 */
.upload-file-input {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  /* 极少数环境 opacity:0 会导致选文件后不触发 change，用近透明代替 */
  opacity: 0.02;
  cursor: pointer;
  font-size: 1rem;
}

.process-status {
  min-height: 1.25em;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 0 0 0.35rem 0;
}

.upload.dragover {
  border-color: var(--color-border-focus);
  background: var(--color-primary-light);
}

.controls {
  display: flex;
  gap: 0.5rem 1rem;
  flex-wrap: wrap;
  align-items: center;
  margin: 0 0 0.5rem 0;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.controls label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.controls-postprocess {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: flex-start;
}

.controls-postprocess .controls-hint {
  width: 100%;
  margin: 0;
  padding: 0.4rem 0.5rem;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--color-text-hint);
  background: var(--color-bg-muted);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.controls-postprocess .controls-hint-row {
  margin: 0;
}

.controls input[type="range"] {
  max-width: 120px;
  accent-color: var(--color-primary);
}

.controls input[type="number"] {
  width: 4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.35rem;
}

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.presets span {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-right: 0.25rem;
}

.presets select {
  padding: 0.35rem 0.5rem;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  min-width: 10rem;
  background: var(--color-bg-card);
}

.preview-wrap {
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0.5rem 0;
  /** 预览正方形边长上限：随视口放大，桌面不超过 880px */
  --preview-max-side: min(96vmin, 880px);
}

.preview {
  width: min(100%, var(--preview-max-side));
  max-width: 100%;
  min-width: 0;
  aspect-ratio: 1;
  flex: 0 0 auto;
  min-height: 0;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-muted);
  cursor: grab;
  user-select: none;
  touch-action: none;
}

@media (max-width: 768px) {
  body {
    padding: 0.5rem;
  }
}

.preview:active {
  cursor: grabbing;
}

.preview-inner {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 0 0;
  will-change: transform;
  pointer-events: auto;
}

.preview-inner canvas {
  display: block;
  background: var(--color-bg-muted);
  /* 显示尺寸由 JS 设置 width/height，与位图分辨率解耦 */
  max-width: none;
}

.preview-zoom {
  width: min(100%, var(--preview-max-side));
  margin-top: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.preview-zoom button {
  width: 32px;
  height: 32px;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
}

.preview-zoom button:hover {
  border-color: var(--color-border-focus);
  background: var(--color-primary-light);
}

.edit-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.35rem;
}

.edit-toolbar label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.edit-toolbar input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 1rem;
  height: 1rem;
}

.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 72px;
  overflow-y: auto;
  align-items: flex-end;
}

.color-swatches .swatch-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.color-swatches .swatch {
  width: 24px;
  height: 24px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.color-swatches .swatch-wrap:hover .swatch {
  border-color: var(--color-text-secondary);
}

.color-swatches .swatch-wrap.selected .swatch {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.color-swatches .swatch-id {
  font-size: 0.65rem;
  color: var(--color-text-secondary);
  line-height: 1;
}

.current-color-display {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  min-width: 5rem;
}

.current-color-display .cur-swatch {
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.current-color-display .cur-id {
  font-weight: 500;
  color: var(--color-text-primary);
}

.eyedropper-hint {
  font-size: 0.8rem;
  color: var(--color-text-hint);
  margin-left: 0.25rem;
}

.edit-toolbar .btn-eyedropper,
.edit-toolbar .btn-undo {
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
}

.edit-toolbar .btn-eyedropper:hover,
.edit-toolbar .btn-undo:hover:not(:disabled) {
  border-color: var(--color-border-focus);
  background: var(--color-primary-light);
}

.edit-toolbar .btn-eyedropper.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.edit-toolbar .btn-undo:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.counts {
  margin-top: 0.75rem;
  flex-shrink: 0;
}

.counts h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--color-text-primary);
}

.counts li code {
  font-size: 0.75em;
  background: var(--color-bg-muted);
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.counts ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.25rem;
}

.counts li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.counts .swatch {
  width: 14px;
  height: 14px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
}

.btns {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  flex-shrink: 0;
  padding-bottom: 0.5rem;
}

.btns button {
  padding: 0.5rem 1rem;
  cursor: pointer;
  border-radius: var(--radius-md);
  border: none;
  background: var(--color-primary);
  color: #fff;
  font-weight: 500;
  font-size: 0.9rem;
  transition: filter 0.15s ease, transform 0.1s ease;
}

.btns button:hover {
  filter: brightness(1.05);
}

.btns button:active {
  transform: scale(0.98);
}