:root {
  --bg: #f0f2f5;
  --bg-elevated: #ffffff;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.15);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --accent: #f97316;
  --accent-soft: rgba(249, 115, 22, 0.12);
  --accent-hover: #ea580c;
  --success: #10b981;
  --success-soft: rgba(16, 185, 129, 0.12);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12), 0 8px 24px rgba(0, 0, 0, 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

:root.dark {
  --bg: #0f172a;
  --bg-elevated: #1e293b;
  --border-subtle: rgba(148, 163, 184, 0.15);
  --border-strong: rgba(148, 163, 184, 0.3);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #fb923c;
  --accent-soft: rgba(251, 146, 60, 0.15);
  --accent-hover: #f97316;
  --success: #34d399;
  --success-soft: rgba(52, 211, 153, 0.15);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.35), 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* 切换主题时暂时禁用过渡，避免大量元素同时 transition 造成卡顿 */
.theme-switching *,
.theme-switching *::before,
.theme-switching *::after {
  transition: none !important;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: 
    radial-gradient(circle at 20% 10%, rgba(249, 115, 22, 0.08), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(59, 130, 246, 0.06), transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.05), transparent 40%),
    var(--bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(148, 163, 184, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.4);
  border-radius: 4px;
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.6);
}

:root.dark ::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.3);
}

:root.dark ::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
}

:root.dark ::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.5);
}

body {
  display: flex;
  flex-direction: column;
}

.app-header {
  backdrop-filter: blur(32px) saturate(180%);
  background: linear-gradient(
      120deg,
      rgba(251, 146, 60, 0.08),
      rgba(59, 130, 246, 0.05)
    ),
    rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  position: sticky;
  top: 0;
  z-index: 10;
  transition: all var(--transition-base);
}

:root.dark .app-header {
  background: linear-gradient(
      120deg,
      rgba(251, 146, 60, 0.1),
      rgba(56, 189, 248, 0.08)
    ),
    rgba(30, 41, 59, 0.95);
  border-bottom-color: rgba(148, 163, 184, 0.15);
}

.app-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 19px;
  background: linear-gradient(135deg, #f97316, #fb923c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

:root.dark .app-title {
  background: linear-gradient(135deg, #fb923c, #fdba74);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-pig {
  font-size: 24px;
  filter: drop-shadow(0 2px 8px rgba(249, 115, 22, 0.4));
  animation: float 3s ease-in-out infinite;
}

:root .logo-pig {
  background: linear-gradient(135deg, #f97316, #fb923c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

:root.dark .logo-pig {
  background: linear-gradient(135deg, #fb923c, #fdba74);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-steps {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 13px;
}

/* 步骤项 */
.step-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-lg);
  background: rgba(148, 163, 184, 0.06);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
  cursor: default;
}

.step-item:hover {
  background: rgba(148, 163, 184, 0.1);
  transform: translateY(-1px);
}

.step-item.active {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(251, 146, 60, 0.08));
  border-color: rgba(249, 115, 22, 0.4);
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.15);
}

/* 步骤编号 */
.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.2);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.step-item.active .step-number {
  background: linear-gradient(135deg, #f97316, #fb923c);
  color: #fff;
  box-shadow: 0 3px 10px rgba(249, 115, 22, 0.4);
}

/* 步骤内容 */
.step-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.step-title {
  font-weight: 600;
  color: var(--text-main);
  font-size: 13px;
  line-height: 1.3;
}

.step-item.active .step-title {
  color: var(--accent);
}

.step-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.2;
}

.step-item.active .step-desc {
  color: rgba(249, 115, 22, 0.8);
}

/* 步骤分隔线 */
.step-divider {
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--border-subtle), var(--border-strong), var(--border-subtle));
  margin: 0 4px;
  position: relative;
}

.step-divider::after {
  content: '';
  position: absolute;
  right: -4px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid var(--border-strong);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}

/* 暗色模式适配 */
:root.dark .step-item {
  background: rgba(30, 41, 59, 0.5);
  border-color: rgba(148, 163, 184, 0.15);
}

:root.dark .step-item:hover {
  background: rgba(30, 41, 59, 0.7);
}

:root.dark .step-item.active {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.2), rgba(251, 146, 60, 0.1));
  border-color: rgba(249, 115, 22, 0.5);
}

:root.dark .step-number {
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
}

:root.dark .step-title {
  color: #e2e8f0;
}

:root.dark .step-desc {
  color: #64748b;
}

:root.dark .step-item.active .step-desc {
  color: rgba(251, 146, 60, 0.9);
}

.app-actions {
  display: flex;
  gap: 10px;
}

.app-actions .btn {
  padding: 6px 12px;
  font-size: 12px;
}

.app-actions .theme-icon {
  font-size: 14px;
  margin-right: 4px;
}

.app-actions .theme-text {
  display: none;
}

:root.dark .app-actions .theme-icon:first-child {
  display: none;
}

:root.dark .app-actions .theme-text {
  display: inline;
}

.app-main {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1.6fr) minmax(
      260px,
      300px
    );
  gap: 16px;
  padding: 20px 20px 16px;
  flex: 1;
}

.left-panel,
.center-panel,
.right-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: 16px 16px 14px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.card h2 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card h2::before {
  content: '';
  width: 4px;
  height: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-radius: 2px;
}

.card h2 i {
  color: var(--accent);
}

.btn i {
  font-size: 14px;
}

.btn.primary i {
  color: rgba(255, 255, 255, 0.9);
}

.btn.secondary i {
  color: rgba(255, 255, 255, 0.9);
}

.btn.ghost i {
  color: var(--text-muted);
}

.btn:hover i {
  color: inherit;
}

.full-height {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.btn {
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  background:
    radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.9), transparent 55%),
    linear-gradient(to bottom, #f9fafb, #e5e7eb);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition-base);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6),
    0 8px 20px rgba(15, 23, 42, 0.12);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn.primary {
  background:
    radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.25), transparent 55%),
    linear-gradient(135deg, #f97316, #fb923c);
  border-color: rgba(249, 115, 22, 0.9);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4),
    0 10px 25px rgba(249, 115, 22, 0.4);
}

.btn.primary:hover {
  background:
    radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.3), transparent 55%),
    linear-gradient(135deg, #ea580c, #f97316);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4),
    0 14px 35px rgba(249, 115, 22, 0.5);
}

.btn.secondary {
  background:
    radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.26), transparent 55%),
    linear-gradient(135deg, #10b981, #34d399);
  border-color: rgba(16, 185, 129, 0.9);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4),
    0 10px 25px rgba(16, 185, 129, 0.4);
}

.btn.secondary:hover {
  background:
    radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.3), transparent 55%),
    linear-gradient(135deg, #059669, #10b981);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4),
    0 14px 35px rgba(16, 185, 129, 0.5);
}

.btn.ghost {
  background: rgba(148, 163, 184, 0.08);
  border-style: solid;
  box-shadow: none;
}

.btn.ghost:hover {
  background: rgba(148, 163, 184, 0.15);
  box-shadow: var(--shadow-sm);
}

.btn.tiny {
  padding: 4px 10px;
  font-size: 11px;
}

.btn.block {
  width: 100%;
  margin-top: 12px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none !important;
}

.btn:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 35px rgba(15, 23, 42, 0.2);
}

.btn:not(:disabled):active {
  transform: translateY(0);
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.15);
}

.btn:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px var(--bg-elevated),
    0 0 0 4px var(--accent),
    0 10px 25px rgba(15, 23, 42, 0.3);
}

.drop-zone {
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border-strong);
  padding: 24px 16px 20px;
  text-align: center;
  background: radial-gradient(
      circle at top left,
      rgba(249, 115, 22, 0.08),
      transparent 60%
    ),
    rgba(255, 255, 255, 0.5);
  position: relative;
  transition: all var(--transition-base);
}

.drop-zone:hover {
  border-color: var(--accent);
  background: radial-gradient(
      circle at top left,
      rgba(249, 115, 22, 0.1),
      transparent 60%
    ),
    rgba(255, 255, 255, 0.7);
}

.drop-zone.dragover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-soft), 0 14px 30px rgba(249, 115, 22, 0.2);
  background: radial-gradient(
      circle at top left,
      rgba(249, 115, 22, 0.15),
      transparent 60%
    ),
    rgba(255, 255, 255, 1);
  transform: scale(1.01);
}

.drop-zone p {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.hint {
  margin: 6px 0 0;
  font-size: 11px;
  color: var(--text-muted);
}

.hint i {
  color: var(--accent);
  margin-right: 6px;
}

.image-info {
  margin-top: 8px;
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 9px;
  background: rgba(15, 23, 42, 0.03);
  border: 1px dashed var(--border-subtle);
}

.image-info i {
  color: var(--accent);
  margin-right: 6px;
}

.hidden {
  display: none !important;
}

.field {
  margin-bottom: 10px;
}

.field label {
  display: block;
  margin-bottom: 2px;
  font-size: 12px;
}

.field label i {
  color: var(--accent);
  margin-right: 6px;
}

.field-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

input[type="range"] {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.2);
  appearance: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

input[type="range"]:hover {
  background: rgba(148, 163, 184, 0.35);
}

input[type="range"]:focus {
  outline: none;
  background: rgba(249, 115, 22, 0.15);
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f97316, #fb923c);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.4), 0 0 0 2px rgba(255, 255, 255, 0.3);
  transition: all var(--transition-fast);
  border: 2px solid #fff;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.5), 0 0 0 2px rgba(255, 255, 255, 0.5);
}

input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(1.05);
  box-shadow: 0 2px 6px rgba(249, 115, 22, 0.6), 0 0 0 3px rgba(249, 115, 22, 0.3);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f97316, #fb923c);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.4);
  transition: all var(--transition-fast);
}

input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.5);
}

input[type="number"] {
  width: 60px;
  padding: 6px 8px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  font-size: 12px;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* 颜色选择器样式 */
.color-field {
  margin-bottom: 12px;
}

.color-picker-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  background: rgba(148, 163, 184, 0.05);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.color-presets {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
}

.color-preset {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: relative;
}

.color-preset:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  border-color: var(--accent);
  z-index: 1;
}

.color-preset.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 4px 8px rgba(0, 0, 0, 0.2);
  transform: scale(1.1);
}

.color-input-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle);
}

input[type="color"] {
  width: 44px;
  height: 44px;
  padding: 3px;
  border-radius: 50%;
  border: 2px solid var(--border-subtle);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

input[type="color"]:hover {
  transform: scale(1.1);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

input[type="color"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.color-value {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
  user-select: all;
}

select {
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  font-size: 12px;
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
}

select:hover {
  border-color: var(--accent);
}

select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.preset-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.preset-row i {
  color: var(--accent);
}

/* 预设尺寸按钮样式 */
.preset-row .btn.tiny.preset {
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  min-width: 50px;
}

.preset-row .btn.tiny.preset:hover {
  background: rgba(249, 115, 22, 0.1);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(249, 115, 22, 0.2);
}

.preset-row .btn.tiny.preset:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(249, 115, 22, 0.15);
}

/* 暗色模式下的预设按钮 */
:root.dark .preset-row .btn.tiny.preset {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(148, 163, 184, 0.3);
  color: #e2e8f0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

:root.dark .preset-row .btn.tiny.preset:hover {
  background: rgba(249, 115, 22, 0.2);
  border-color: var(--accent);
  color: #fb923c;
  box-shadow: 0 3px 10px rgba(249, 115, 22, 0.25);
}

/* 网格尺寸区域样式 */
.grid-size-section {
  background: rgba(148, 163, 184, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px;
  margin-bottom: 14px;
  transition: all var(--transition-fast);
}

.grid-size-section:hover {
  background: rgba(148, 163, 184, 0.08);
  border-color: var(--border-strong);
}

.grid-size-section .field {
  margin-bottom: 10px;
}

.grid-size-section .field:last-of-type {
  margin-bottom: 0;
}

.grid-size-section .height-field {
  position: relative;
}

.grid-size-section .aspect-checkbox {
  margin-top: 8px;
  padding: 6px 10px;
  background: var(--accent-soft);
  border-radius: var(--radius-md);
  font-size: 11px;
}

.grid-size-section .aspect-checkbox i {
  color: var(--accent);
}

/* 输入框样式优化 */
input[type="number"] {
  width: 60px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  text-align: center;
  transition: all var(--transition-fast);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

input[type="number"]:hover {
  border-color: var(--border-strong);
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), inset 0 1px 2px rgba(0, 0, 0, 0.05);
  background: #fff;
}

input[type="number"]:disabled {
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* 选择框样式优化 */
.select-field {
  margin-bottom: 12px;
}

.select-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.select-wrapper select {
  width: 100%;
  padding: 10px 36px 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  font-size: 13px;
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.select-wrapper select:hover {
  border-color: var(--accent);
  background: #fff;
}

.select-wrapper select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: #fff;
}

.select-arrow {
  position: absolute;
  right: 12px;
  pointer-events: none;
  color: var(--accent);
  font-size: 12px;
  transition: transform var(--transition-fast);
}

.select-wrapper:hover .select-arrow {
  transform: translateY(1px);
}

/* 拼豆样式选择器 */
.bead-style {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.bead-style-label {
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
}

.bead-style-label i {
  color: var(--accent);
}

.bead-style-options {
  display: flex;
  gap: 6px;
}

.bead-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 50px;
}

.bead-option:hover {
  border-color: var(--accent);
  background: rgba(249, 115, 22, 0.05);
}

.bead-option.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.2);
}

.bead-option input[type="radio"] {
  display: none;
}

.bead-preview {
  width: 20px;
  height: 20px;
  border: 2px solid var(--text-muted);
  transition: all var(--transition-fast);
}

.bead-option.active .bead-preview {
  border-color: var(--accent);
}

.square-preview {
  border-radius: 2px;
}

.circle-preview {
  border-radius: 50%;
}

.ring-preview {
  border-radius: 50%;
  border-width: 3px;
  background: transparent;
}

.bead-name {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
}

.bead-option.active .bead-name {
  color: var(--accent);
}

.tabs {
  display: inline-flex;
  align-self: center;
  padding: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.1);
  margin-bottom: 12px;
  gap: 4px;
}

.tab {
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  background: transparent;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-base);
  position: relative;
}

.tab:hover {
  color: var(--text-main);
  background: rgba(148, 163, 184, 0.08);
}

.tab.active {
  background: var(--bg-elevated);
  color: var(--accent);
  box-shadow: 0 2px 8px rgba(148, 163, 184, 0.15);
}

.tab.active i {
  color: var(--accent);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
}

.tab-content {
  display: none;
  flex: 1;
}

.tab-content.active {
  display: flex;
  flex-direction: column;
}

.canvas-wrapper {
  flex: 1;
  min-height: 280px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: radial-gradient(circle at top, #e5e7eb, #f3f4f6);
  overflow: hidden;
  position: relative;
  transition: all var(--transition-base);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.04);
}

.canvas-wrapper:hover {
  box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.08), var(--shadow-sm);
}

:root.dark .canvas-wrapper {
  background: radial-gradient(circle at top, #1e293b, #0f172a);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.placeholder i {
  color: var(--accent);
  margin-right: 8px;
  font-size: 16px;
}

.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 12px;
}

.toolbar i {
  color: var(--accent);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-size: 13px;
  user-select: none;
}

.checkbox:hover {
  background: rgba(148, 163, 184, 0.12);
  color: var(--text-main);
}

.checkbox i {
  color: var(--accent);
  font-size: 14px;
}

.checkbox:hover i {
  color: var(--accent-hover);
}

.checkbox input[type="checkbox"] {
  cursor: pointer;
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  border-radius: 4px;
  border: 2px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.checkbox input[type="checkbox"]:hover {
  border-color: var(--accent);
}

.checkbox input[type="checkbox"]:checked {
  accent-color: var(--accent);
}

/* 色号字体调节 */
.code-font-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.code-font-label {
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
}

.code-font-label i {
  color: var(--accent);
}

.code-font-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.code-font-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.code-font-item span:first-child {
  white-space: nowrap;
}

.code-font-item input[type="range"] {
  width: 64px;
  height: 6px;
  accent-color: var(--accent);
}

.code-font-value {
  min-width: 36px;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}

.code-font-item .color-picker-wrapper.inline {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.code-font-item .color-picker-wrapper input[type="color"] {
  width: 28px;
  height: 24px;
  padding: 0;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  cursor: pointer;
}

.code-font-item select {
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  background: var(--bg-elevated);
  color: var(--text-main);
  cursor: pointer;
}

.bead-style {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.bead-style-label {
  color: var(--text-muted);
}

.bead-style-label i {
  color: var(--accent);
}

#beadStyle {
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  padding: 3px 8px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text-main);
}

#beadStyle i {
  margin-right: 4px;
}

.color-stats {
  margin-top: 8px;
  flex: 1;
  overflow: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: rgba(148, 163, 184, 0.05);
  padding: 10px 8px;
  transition: all var(--transition-fast);
}

.color-stats:hover {
  background: rgba(148, 163, 184, 0.08);
  border-color: var(--border-strong);
}

.color-stats.empty {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

.color-stats.empty i {
  color: var(--accent);
  margin-right: 8px;
  font-size: 16px;
}

.color-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  transition: all var(--transition-fast);
}

.color-row:hover {
  background: rgba(148, 163, 184, 0.1);
}

.color-row:nth-child(odd) {
  background: rgba(148, 163, 184, 0.04);
}

.color-row:nth-child(odd):hover {
  background: rgba(148, 163, 184, 0.12);
}

.color-chip {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8);
}

.color-main {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.color-name {
  font-weight: 500;
}

.color-meta {
  font-size: 11px;
  color: var(--text-muted);
}

/* 导出按钮区域 */
.export-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 10px;
}

.export-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 8px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all var(--transition-base);
  gap: 6px;
  min-height: 80px;
}

.export-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.export-btn i {
  font-size: 24px;
  margin-bottom: 4px;
}

.export-primary {
  background: linear-gradient(135deg, #f97316, #fb923c);
  border-color: rgba(249, 115, 22, 0.9);
  color: #fff;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.export-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #ea580c, #f97316);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.export-primary i {
  color: rgba(255, 255, 255, 0.95);
}

.export-secondary {
  background: var(--bg-elevated);
  border-color: var(--border-subtle);
}

.export-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(249, 115, 22, 0.05);
}

.export-secondary i {
  color: var(--accent);
}

.export-label {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
}

.export-desc {
  font-size: 10px;
  opacity: 0.8;
  font-weight: 400;
}

.export-secondary .export-desc {
  color: var(--text-muted);
}

.export-hint {
  text-align: center;
  margin: 0;
  padding: 8px;
  background: rgba(148, 163, 184, 0.05);
  border-radius: var(--radius-md);
}

/* 响应式：小屏幕下改为垂直布局 */
@media (max-width: 640px) {
  .export-buttons {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  
  .export-btn {
    flex-direction: row;
    justify-content: flex-start;
    padding: 12px 16px;
    min-height: auto;
    gap: 12px;
  }
  
  .export-btn i {
    font-size: 20px;
    margin-bottom: 0;
  }
  
  .export-label {
    font-size: 14px;
  }
  
  .export-desc {
    margin-left: auto;
    font-size: 11px;
  }
}

.app-footer {
  padding: 6px 14px 10px;
  font-size: 11px;
  text-align: center;
  color: var(--text-muted);
}

.brand-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.brand-option {
  border-radius: var(--radius-lg);
  padding: 10px 12px;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: stretch;
  gap: 10px;
  cursor: pointer;
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.06), transparent 55%);
  transition: all var(--transition-base);
}

.brand-option:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.08), transparent 55%);
}

.brand-option input[type="radio"] {
  margin-top: 4px;
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.brand-option.active {
  border-color: var(--accent);
  box-shadow: 0 4px 16px var(--accent-soft);
  background: radial-gradient(circle at top left, rgba(249, 115, 22, 0.08), transparent 55%);
}

.brand-option.active i {
  color: var(--accent);
}

.brand-content {
  flex: 1;
}

.brand-name {
  font-weight: 600;
  font-size: 14px;
}

.brand-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.brand-meta i {
  color: var(--success);
  margin-right: 4px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 10px;
  margin-top: 4px;
}

.badge i {
  margin-right: 4px;
}

@media (max-width: 1100px) {
  .app-main {
    grid-template-columns: minmax(260px, 320px) minmax(0, 1.5fr);
    grid-template-rows: auto auto;
  }

  .right-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  .app-header {
    padding: 8px 12px;
    flex-wrap: wrap;
    row-gap: 6px;
  }

  .app-title {
    flex: 1;
    font-size: 16px;
  }

  .app-steps {
    width: 100%;
    justify-content: center;
    font-size: 11px;
  }

  .app-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .app-main {
    grid-template-columns: minmax(0, 1fr);
    padding: 10px 10px 8px;
  }

  .left-panel,
  .center-panel,
  .right-panel {
    grid-column: 1 / -1;
  }

  .card {
    border-radius: 14px;
    padding: 10px 10px 8px;
  }

  .canvas-wrapper {
    min-height: 220px;
  }

  .toolbar {
    flex-wrap: wrap;
  }

  .btn {
    padding: 6px 12px;
  }
}