/* ============================================
   V3 视觉(从设计稿移植)
   ============================================ */
:root {
  --v3-bg: #ffffff;
  --v3-fg: #1d1d1f;
  --v3-muted: #f2f2f7;
  --v3-muted-fg: #6e6e73;
  --v3-border: #e5e5ea;
  --v3-card: #ffffff;
  --v3-primary: #007aff;
  --v3-primary-fg: #ffffff;
  --v3-success: #34c759;
  --v3-destructive: #ff3b30;
  --v3-radius: 14px;
  --v3-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* #28 暗色模式变量覆盖 */
html.dark {
  --v3-bg: #1c1c1e;
  --v3-fg: #f2f2f7;
  --v3-muted: #2c2c2e;
  --v3-muted-fg: #98989f;
  --v3-border: #38383a;
  --v3-card: #2c2c2e;
  --v3-primary: #0a84ff;
  --v3-primary-fg: #ffffff;
  --v3-success: #30d158;
  --v3-destructive: #ff453a;
}
/* 暗色切换图标:light 显示太阳,dark 显示月亮 */
.v3-theme-moon { display: none; }
html.dark .v3-theme-sun { display: none; }
html.dark .v3-theme-moon { display: inline; }
/* 暗色下广告位斜纹底色适配 */
html.dark .v3-ad { background: repeating-linear-gradient(45deg, #2c2c2e 0 10px, #242426 10px 20px); }
html.dark .v3-lang-btn { background: var(--v3-card); }

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

body.v3 {
  margin: 0;
  background: var(--v3-bg);
  color: var(--v3-fg);
  font-family: var(--v3-font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.v3-page { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶栏 ===== */
.v3-topbar {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in oklab, var(--v3-card) 92%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--v3-border);
}
.v3-topbar-inner { height: 56px; display: flex; align-items: center; gap: 16px; }
.v3-logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; text-decoration: none; color: var(--v3-fg); }
.v3-logo-mark { width: 28px; height: 28px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Crect width='32' height='32' rx='8' fill='%23007aff'/%3E%3Crect x='6' y='6' width='14' height='14' rx='3.5' fill='%23fff' opacity='0.35'/%3E%3Crect x='9' y='9' width='14' height='14' rx='3.5' fill='%23fff' opacity='0.65'/%3E%3Crect x='12' y='12' width='14' height='14' rx='3.5' fill='%23fff'/%3E%3C/svg%3E") center/contain no-repeat; color: transparent; display: inline-flex; align-items: center; justify-content: center; font-size: 0; }
.v3-nav { display: flex; gap: 4px; margin-left: 16px; }
.v3-nav a { padding: 6px 12px; border-radius: 8px; color: var(--v3-muted-fg); text-decoration: none; font-size: 14px; font-weight: 500; }
.v3-nav a:hover { background: var(--v3-muted); color: var(--v3-fg); }
.v3-spacer { flex: 1; }
.v3-icon-btn { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 10px; border: 1px solid color-mix(in oklab, var(--v3-border) 60%, var(--v3-fg) 40%); border-radius: 8px; background: var(--v3-muted); color: var(--v3-fg); font-size: 13px; font-weight: 500; cursor: pointer; text-decoration: none; transition: background .12s, border-color .12s, color .12s; }
.v3-icon-btn:hover { background: color-mix(in oklab, var(--v3-muted) 60%, var(--v3-fg) 8%); border-color: color-mix(in oklab, var(--v3-border) 30%, var(--v3-fg) 70%); }
.v3-icon-btn:active { background: color-mix(in oklab, var(--v3-muted) 50%, var(--v3-fg) 12%); }
.v3-lang-btn { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border: 1px solid var(--v3-border); border-radius: 8px; background: #fff; color: var(--v3-fg); font-size: 13px; font-weight: 500; cursor: pointer; }

/* ===== Hero ===== */
.v3-hero { padding: 32px 0 12px; text-align: center; }
.v3-hero h1 { font-size: 30px; line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 6px; }
.v3-hero p { font-size: 14px; color: var(--v3-muted-fg); margin: 0; }

/* ===== 广告 ===== */
.v3-ad-wrap { padding: 6px 0 4px; }
.v3-ad { max-width: 1200px; margin: 0 auto; height: 70px; border: 1px dashed var(--v3-border); border-radius: 12px; background: repeating-linear-gradient(45deg, #f7f7fa 0 10px, #f2f2f7 10px 20px); display: flex; align-items: center; justify-content: center; color: var(--v3-muted-fg); font-size: 12px; font-weight: 600; letter-spacing: 0.18em; }

/* ===== 工具网格(MVP:只放压缩) ===== */
.v3-tools-wrap { padding: 12px 0 8px; }
.v3-tools-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.v3-tools-head h2 { font-size: 13px; font-weight: 600; color: var(--v3-muted-fg); margin: 0; text-transform: uppercase; letter-spacing: 0.06em; }
.v3-tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; }
.v3-tool-card { display: flex; align-items: center; gap: 10px; padding: 12px 14px; background: var(--v3-card); border: 1px solid var(--v3-border); border-radius: 12px; text-decoration: none; color: var(--v3-fg); cursor: pointer; transition: border-color .15s, transform .12s, box-shadow .15s; }
.v3-tool-card:hover { border-color: var(--v3-primary); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,0.05); }
.v3-tool-card.active { border-color: var(--v3-primary); background: color-mix(in oklab, var(--v3-primary) 4%, var(--v3-card)); }
.v3-tool-icon { width: 32px; height: 32px; border-radius: 8px; background: var(--v3-muted); color: var(--v3-fg); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 16px; }
.v3-tool-name { font-size: 13px; font-weight: 600; }
.v3-tool-desc { font-size: 11px; color: var(--v3-muted-fg); margin-top: 1px; }

/* ===== 上传卡 + 隐私 ===== */
.v3-bottom-row { padding: 8px 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 8px; max-width: 760px; margin: 0 auto; }
.v3-upload-preview { border: 1px dashed var(--v3-border); border-radius: 12px; background: var(--v3-card); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; padding: 10px 14px 8px; }
.v3-upload-thumb { width: 100%; max-width: 200px; aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; display: flex; align-items: center; justify-content: center; background-color: #fff; background-image: conic-gradient(#c7c7cc 0 25%, #ffffff 0 50%, #c7c7cc 0 75%, #ffffff 0); background-size: 14px 14px; }
.v3-upload-label { font-size: 13px; font-weight: 700; color: var(--v3-primary); letter-spacing: 0.02em; }
.v3-upload-sub { font-size: 11px; color: var(--v3-muted-fg); text-align: center; }
.v3-privacy { border: 1px solid var(--v3-border); border-radius: 12px; background: var(--v3-card); display: flex; align-items: center; padding: 12px 14px; }
.v3-privacy-text .t1 { font-size: 12px; font-weight: 600; line-height: 1.5; }
.v3-privacy-text .t2 { font-size: 11px; color: var(--v3-muted-fg); margin-top: 4px; line-height: 1.5; }

/* ===== 工作区(MVP:压缩) ===== */
.v3-workspace { padding: 8px 0 0; background: var(--v3-muted); }
.v3-ws-inner { max-width: 1200px; margin: 0 auto; padding: 12px 24px; }
.v3-filebar { padding: 6px 0; display: flex; align-items: center; gap: 10px; background: var(--v3-card); border: 1px solid var(--v3-border); border-radius: 10px; padding: 8px 12px; }
.v3-file-icon { width: 32px; height: 32px; border-radius: 8px; background: var(--v3-muted); color: var(--v3-primary); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.v3-file-text { min-width: 0; flex: 1; }
.v3-file-name { font-size: 13px; font-weight: 600; }
.v3-file-meta { font-size: 11px; color: var(--v3-muted-fg); }

.v3-progress { display: flex; align-items: center; gap: 8px; padding: 6px 0; }
.v3-progress-track { flex: 1; height: 6px; border-radius: 3px; background: #d1d1d6; overflow: hidden; }
.v3-progress-bar { height: 100%; background: var(--v3-primary); border-radius: 3px; transition: width .2s; width: 0; }
.v3-progress-pct { font-size: 12px; font-weight: 600; color: var(--v3-primary); min-width: 36px; text-align: right; }

.v3-ws-grid { display: grid; grid-template-columns: minmax(0, 1fr) clamp(260px, 30vw, 340px) minmax(0, 1fr); gap: 8px; padding-bottom: 8px; align-items: stretch; }
.v3-ws-card { background: var(--v3-card); border: 1px solid var(--v3-border); border-radius: 12px; overflow: hidden; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.v3-ws-card .v3-ws-canvas { flex: 1 1 auto; min-height: 240px; }
.v3-ws-card-head { display: flex; align-items: center; justify-content: space-between; padding: 7px 10px; border-bottom: 1px solid var(--v3-border); background: color-mix(in oklab, var(--v3-muted) 50%, var(--v3-card)); font-size: 12px; min-height: 32px; line-height: 1; }
.v3-ws-canvas { flex: 1; aspect-ratio: 4 / 3; background: repeating-conic-gradient(color-mix(in oklab, var(--v3-fg) 4%, transparent) 0 25%, transparent 0 50%) 50% / 16px 16px, var(--v3-muted); display: flex; align-items: center; justify-content: center; padding: 8px; overflow: hidden; }
.v3-ws-canvas img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); display: block; cursor: grab; transition: transform .05s linear; transform-origin: 0 0; }
.v3-ws-canvas img.dragging { cursor: grabbing; }

/* 缩放控件(右上角) */
.v3-zoom-controls { position: absolute; top: 6px; right: 6px; display: flex; gap: 2px; padding: 2px; background: color-mix(in oklab, var(--v3-card) 86%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid var(--v3-border); border-radius: 8px; z-index: 5; opacity: 0; pointer-events: none; transition: opacity .15s; }
.v3-ws-canvas:hover .v3-zoom-controls,
#v3-original-canvas:hover .v3-zoom-controls,
#v3-result-canvas:hover .v3-zoom-controls { opacity: 1; pointer-events: auto; }
.v3-zoom-btn { width: 26px; height: 26px; border: 0; background: transparent; color: var(--v3-muted-fg); font-size: 14px; font-weight: 600; border-radius: 5px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
.v3-zoom-btn:hover { background: var(--v3-muted); color: var(--v3-fg); }
.v3-zoom-info { font-size: 10px; padding: 0 6px; min-width: 38px; text-align: center; color: var(--v3-muted-fg); font-weight: 600; align-self: center; }

/* #22 换一张按钮:尺寸增大,对比度提升,手机端友好 */
.v3-change-btn { flex-shrink: 0; height: 30px; padding: 0 14px; font-size: 13px; font-weight: 600; border: 1px solid color-mix(in oklab, var(--v3-border) 50%, var(--v3-fg) 30%); border-radius: 8px; background: var(--v3-muted); color: var(--v3-fg); cursor: pointer; transition: background .12s, border-color .12s, transform .12s; }
.v3-change-btn:hover { background: color-mix(in oklab, var(--v3-muted) 60%, var(--v3-fg) 10%); border-color: color-mix(in oklab, var(--v3-border) 20%, var(--v3-fg) 70%); }
.v3-change-btn:active { transform: scale(0.96); }

/* #29 处理完后引导:换一张按钮 pulse 高亮 2 秒 */
@keyframes v3-pulse-highlight {
  0% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--v3-accent, #0066ff) 60%, transparent); }
  50% { box-shadow: 0 0 0 6px color-mix(in oklab, var(--v3-accent, #0066ff) 20%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--v3-accent, #0066ff) 0%, transparent); }
}
.v3-change-btn.pulse { animation: v3-pulse-highlight 1s ease-out 2; border-color: var(--v3-accent, #0066ff); }

/* #20 手机端缩放按钮长显(不依赖 hover) */
@media (max-width: 768px) {
  .v3-zoom-controls { opacity: 1; pointer-events: auto; }
}

/* #19 前后对比条 */
.v3-compare-bar { display: flex; align-items: center; gap: 10px; padding: 8px 12px; margin: 0 0 8px; background: color-mix(in oklab, var(--v3-muted) 60%, transparent); border: 1px solid var(--v3-border); border-radius: 8px; font-size: 13px; font-weight: 600; }
.v3-compare-before { color: var(--v3-muted-fg); }
.v3-compare-arrow { color: var(--v3-muted-fg); }
.v3-compare-after { color: var(--v3-fg); }
.v3-compare-save { margin-left: auto; padding: 2px 8px; border-radius: 6px; font-size: 12px; font-weight: 700; }
.v3-compare-save.saved { background: color-mix(in oklab, #22c55e 20%, transparent); color: #16a34a; }
.v3-compare-save.bigger { background: color-mix(in oklab, #ef4444 20%, transparent); color: #dc2626; }

/* 裁剪工具下隐藏缩放控件(避免视觉冲突) */
body.v3-crop-mode #v3-original-zoom { display: none !important; }
body.v3-crop-mode #v3-result-zoom { display: none !important; }

/* 批处理:缩略图列表 */
.v3-thumb-strip {
  display: flex; gap: 6px; padding: 8px 6px;
  overflow-x: auto; overflow-y: hidden;
  border-top: 1px solid var(--v3-border);
  background: color-mix(in oklab, var(--v3-muted) 30%, var(--v3-card));
  scroll-behavior: smooth;
  scrollbar-width: thin;
}
.v3-thumb-strip::-webkit-scrollbar { height: 6px; }
.v3-thumb-strip::-webkit-scrollbar-thumb { background: var(--v3-border); border-radius: 3px; }
.v3-thumb { flex: 0 0 auto; width: 70px; height: 70px; border-radius: 6px; border: 2px solid transparent; background: var(--v3-muted); cursor: pointer; overflow: hidden; position: relative; transition: border-color .12s; }
.v3-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.v3-thumb.active { border-color: var(--v3-primary); box-shadow: 0 0 0 2px color-mix(in oklab, var(--v3-primary) 30%, transparent); }
.v3-thumb-num { position: absolute; bottom: 2px; right: 2px; background: rgba(0,0,0,0.7); color: #fff; font-size: 9px; padding: 1px 4px; border-radius: 3px; font-weight: 600; }

/* 批处理:工具按钮组 */
.v3-batch-tools {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px;
  padding: 4px;
  background: var(--v3-muted);
  border-radius: 8px;
  margin-bottom: 12px;
  min-height: 40px;
}
.v3-batch-tools button {
  height: 32px; border: 1px solid transparent; background: transparent; border-radius: 5px;
  font-size: 11px; color: var(--v3-muted-fg); font-weight: 500;
  cursor: pointer; transition: background .12s, color .12s;
}
.v3-batch-tools button:hover { background: var(--v3-card); box-shadow: 0 1px 2px rgba(0,0,0,0.06); }
.v3-batch-tools button.active { background: var(--v3-primary); color: #fff; font-weight: 600; border-color: var(--v3-primary); box-shadow: 0 1px 3px color-mix(in oklab, var(--v3-primary) 30%, transparent); }

/* 批处理结果面板 */
.v3-batch-result { padding: 10px 12px; background: color-mix(in oklab, var(--v3-success) 8%, var(--v3-card)); border: 1px solid var(--v3-success); border-radius: 8px; margin-top: 8px; }
.v3-batch-result-btn { display: block; width: 100%; padding: 8px; background: var(--v3-success); color: #fff; border: 0; border-radius: 6px; font-size: 13px; font-weight: 600; cursor: pointer; text-align: center; text-decoration: none; }
.v3-batch-result-btn:hover { opacity: 0.92; }

/* 裁剪框 */
#v3-original-canvas,
#v3-result-canvas { position: relative; }
#v3-crop-overlay { position: absolute; left: 0; top: 0; width: 100%; height: 100%; pointer-events: none; }
.v3-ws-canvas { position: relative; }
#v3-crop-mask-t, #v3-crop-mask-r, #v3-crop-mask-b, #v3-crop-mask-l {
  position: absolute; background: rgba(0,0,0,0.7); pointer-events: auto; cursor: default;
}
#v3-crop-box {
  position: absolute; border: 2px solid var(--v3-primary);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.6);
  cursor: move; pointer-events: auto;
}
.v3-crop-handle {
  position: absolute; width: 14px; height: 14px; background: #fff;
  border: 2px solid var(--v3-primary); border-radius: 50%;
  pointer-events: auto;
}
.v3-crop-handle[data-handle="tl"] { top: -7px; left: -7px; cursor: nwse-resize; }
.v3-crop-handle[data-handle="tr"] { top: -7px; right: -7px; cursor: nesw-resize; }
.v3-crop-handle[data-handle="bl"] { bottom: -7px; left: -7px; cursor: nesw-resize; }
.v3-crop-handle[data-handle="br"] { bottom: -7px; right: -7px; cursor: nwse-resize; }
.v3-ws-canvas-empty { color: var(--v3-muted-fg); text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; min-height: 80px; width: 100%; }
.v3-ws-canvas-empty #v3-original-empty-text { font-size: 13px; color: var(--v3-muted-fg); }
.v3-batch-upload-btn { display: none; padding: 6px 14px; border: 1.5px solid var(--v3-primary); border-radius: 8px; background: var(--v3-card); color: var(--v3-primary); font-size: 13px; font-weight: 600; cursor: pointer; pointer-events: auto !important; }
.v3-batch-upload-btn:hover { background: var(--v3-primary); color: #fff; }
body.v3-batch-mode .v3-batch-upload-btn { display: inline-flex !important; }
.v3-ws-card-foot { display: flex; align-items: center; justify-content: space-between; padding: 6px 10px; border-top: 1px solid var(--v3-border); font-size: 11px; color: var(--v3-muted-fg); min-height: 28px; }

/* 参数区 */
.v3-params { padding: 12px; display: flex; flex-direction: column; gap: 12px; justify-content: center; flex: 1; min-height: 440px; }
.v3-field { display: flex; flex-direction: column; gap: 6px; }
.v3-field-label { display: grid; grid-template-columns: auto 1fr; align-items: center; justify-content: space-between; font-size: 12px; color: var(--v3-muted-fg); min-height: 22px; line-height: 1.2; gap: 8px; }
.v3-field-value { font-weight: 600; color: var(--v3-fg); font-variant-numeric: tabular-nums; }
.v3-field-hint { font-size: 11px; color: var(--v3-muted-fg); line-height: 1.5; padding: 0 2px; }
#v3-params-mount, #v3-meta-panel { display: flex; flex-direction: column; gap: 12px; }
.v3-slider { -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 3px; background: #d1d1d6; outline: none; cursor: pointer; }
.v3-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--v3-primary); border: 3px solid var(--v3-card); box-shadow: 0 2px 4px rgba(0,0,0,0.25); cursor: pointer; }
.v3-slider::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--v3-primary); border: 3px solid var(--v3-card); box-shadow: 0 2px 4px rgba(0,0,0,0.25); cursor: pointer; }
.v3-seg { display: flex; gap: 0; border: 1px solid var(--v3-border); border-radius: 8px; padding: 2px; background: var(--v3-muted); min-width: 0; overflow: hidden; }
.v3-seg button { flex: 1 1 0; min-width: 0; height: 32px; border: 0; background: transparent; border-radius: 6px; font-size: 13px; color: var(--v3-muted-fg); font-weight: 500; cursor: pointer; padding: 0 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: background .12s, color .12s; }
.v3-seg button:hover { background: var(--v3-card); box-shadow: 0 1px 2px rgba(0,0,0,0.06); }
.v3-seg button.active { background: var(--v3-primary); color: #fff; font-weight: 600; box-shadow: 0 1px 3px color-mix(in oklab, var(--v3-primary) 30%, transparent); }

/* 裁剪比例 segmented - 苹果风 3列2行(专用 class + ID 选择器,不改 HTML/JS) */
.v3-seg-ratio,
#v3-crop-ratio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  padding: 3px;
  background: var(--v3-muted);
  border: 1px solid var(--v3-border);
  border-radius: 8px;
  overflow: visible;
  min-width: 0;
}
.v3-seg-ratio button,
#v3-crop-ratio button {
  border: 1px solid transparent;
  background: transparent;
  padding: 6px 4px;
  height: auto;
  min-width: 0;
  font-size: 12px;
  color: var(--v3-muted-fg);
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.v3-seg-ratio button:hover,
#v3-crop-ratio button:hover {
  background: var(--v3-card);
  border-color: var(--v3-border);
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}
.v3-seg-ratio button.active,
#v3-crop-ratio button.active {
  background: var(--v3-primary);
  color: #fff;
  font-weight: 600;
  border-color: var(--v3-primary);
  box-shadow: 0 1px 3px color-mix(in oklab, var(--v3-primary) 30%, transparent);
}

/* 滤镜预设按钮组 - 4列2行,避免 6+ 按钮挤一行被截断(UI-6) */
#v3-filter-preset.v3-seg {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3px;
  padding: 3px;
}
#v3-filter-preset.v3-seg button {
  font-size: 12px;
  padding: 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 文本输入框 - 统一边框 + focus 态(UI-10) */
.v3-field input[type="text"],
.v3-field input[type="text"]:focus {
  outline: none;
}
.v3-field input[type="text"] {
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--v3-border);
  border-radius: 8px;
  background: var(--v3-card);
  font-size: 13px;
  color: var(--v3-fg);
  transition: border-color .12s, box-shadow .12s;
}
.v3-field input[type="text"]:focus {
  border-color: var(--v3-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--v3-primary) 18%, transparent);
}
.v3-field input[type="text"]::placeholder { color: var(--v3-muted-fg); }

/* ===== 浮动操作栏 ===== */
.v3-action-floating {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; padding: 6px 10px;
  margin: 12px auto 18px;
  width: fit-content;
  border: 1px solid var(--v3-border);
  border-radius: 14px;
  background: color-mix(in oklab, var(--v3-card) 86%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 8px 24px -8px rgba(0,0,0,0.18), 0 2px 4px -2px rgba(0,0,0,0.08);
}
.v3-action-cluster { display: flex; align-items: center; gap: 4px; }
.v3-action-icon { width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--v3-muted-fg); cursor: pointer; font-size: 16px; }
.v3-action-icon:hover:not(:disabled) { background: var(--v3-muted); color: var(--v3-fg); border-color: var(--v3-border); }
.v3-action-icon:disabled { opacity: 0.4; cursor: not-allowed; }
.v3-action-danger:hover:not(:disabled) { color: var(--v3-destructive); }
.v3-action-sep { width: 1px; height: 18px; background: var(--v3-border); margin: 0 2px; }
.v3-action-secondary { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border: 1px solid var(--v3-border); border-radius: 8px; background: transparent; color: var(--v3-fg); font-size: 13px; font-weight: 600; cursor: pointer; }
.v3-action-primary { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 14px; border: 1px solid var(--v3-primary); border-radius: 8px; background: var(--v3-primary); color: var(--v3-primary-fg); font-size: 13px; font-weight: 600; cursor: pointer; }
.v3-action-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 12px color-mix(in oklab, var(--v3-primary) 34%, transparent); }

/* ===== FAQ ===== */
.v3-faq-wrap { padding: 16px 0; }
.v3-faq-head h2 { font-size: 13px; font-weight: 600; color: var(--v3-muted-fg); margin: 0 0 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.v3-faq-list { display: flex; flex-direction: column; gap: 6px; }
.v3-faq-item { border: 1px solid var(--v3-border); border-radius: 10px; background: var(--v3-card); padding: 10px 14px; }
.v3-faq-q { font-size: 13px; font-weight: 600; }
.v3-faq-a { font-size: 11px; color: var(--v3-muted-fg); margin-top: 3px; line-height: 1.5; }

/* ===== 友链 + 打赏 ===== */
.v3-friends-support { padding: 16px 0; display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 10px; }
.v3-friends-card, .v3-support-card { border: 1px solid var(--v3-border); border-radius: 12px; background: var(--v3-card); padding: 14px; }
.v3-friends-head h2, .v3-support-head h2 { font-size: 13px; font-weight: 600; color: var(--v3-muted-fg); margin: 0 0 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.v3-friends-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
.v3-friend-link { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid var(--v3-border); border-radius: 8px; background: var(--v3-bg); text-decoration: none; color: var(--v3-fg); font-size: 11px; font-weight: 500; }
.v3-friend-link:hover { border-color: var(--v3-primary); color: var(--v3-primary); }
.v3-friend-icon { width: 22px; height: 22px; border-radius: 5px; background: var(--v3-muted); color: var(--v3-muted-fg); display: inline-flex; align-items: center; justify-content: center; font-size: 11px; flex-shrink: 0; }
.v3-support-body { display: flex; flex-direction: column; gap: 10px; }
.v3-support-text .t1 { font-size: 12px; font-weight: 600; }
.v3-support-text .t2 { font-size: 11px; color: var(--v3-muted-fg); margin-top: 4px; line-height: 1.5; }
.v3-support-btn { display: inline-flex; align-items: center; justify-content: center; height: 32px; padding: 0 14px; border: 1px solid var(--v3-primary); border-radius: 8px; background: var(--v3-primary); color: var(--v3-primary-fg); font-size: 12px; font-weight: 600; text-decoration: none; align-self: flex-start; }

.v3-footer { border-top: 1px solid var(--v3-border); padding: 16px 0; color: var(--v3-muted-fg); font-size: 12px; text-align: center; }
.v3-footer a { color: var(--v3-primary); text-decoration: none; }

/* SEO 工具导航 */
.v3-seo-nav { padding: 24px 0; }
.v3-seo-nav h2 { font: 700 15px/1.4 -apple-system,system-ui,sans-serif; color: var(--v3-text); margin: 0 0 12px; }
.v3-seo-nav-grid { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.v3-seo-nav-grid a { font: 400 13px/1.4 -apple-system,system-ui,sans-serif; color: var(--v3-text-2); text-decoration: none; padding: 4px 10px; border: 1px solid var(--v3-border); border-radius: 6px; transition: color .15s, border-color .15s; }
.v3-seo-nav-grid a:hover { color: var(--v3-primary); border-color: var(--v3-primary); }

/* 工作区初始隐藏(点了工具才显示) */
.v3-ws-hidden { display: none; }

/* Toast */
.v3-toast { position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%); background: rgba(0,0,0,0.85); color: #fff; font-size: 13px; padding: 8px 14px; border-radius: 8px; z-index: 100; opacity: 0; pointer-events: none; transition: opacity .2s; }
.v3-toast.show { opacity: 1; }

/* ===== 响应式 ===== */
/* #24 中等屏(1000~1200px):两图并排,参数栏放下面 */
@media (max-width: 1200px) and (min-width: 1025px) {
  .v3-ws-grid { grid-template-columns: 1fr 1fr; }
  .v3-ws-grid > article:nth-child(1) { grid-column: 1; grid-row: 1; }
  .v3-ws-grid > article:nth-child(3) { grid-column: 2; grid-row: 1; }
  .v3-ws-grid > article:nth-child(2) { grid-column: 1 / -1; grid-row: 2; }
}
@media (max-width: 1024px) {
  .v3-ws-grid { grid-template-columns: 1fr; }
  .v3-ws-canvas { aspect-ratio: 16 / 10; max-height: 400px; }
  .v3-tools-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .v3-friends-support { grid-template-columns: 1fr; }
  .v3-friends-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .v3-page { padding: 0 12px; }
  .v3-topbar { height: 48px; }
  .v3-topbar-inner { gap: 8px; height: 48px; }
  .v3-nav { display: none; }
  .v3-hero { padding: 10px 0 6px; }
  .v3-hero h1 { font-size: 20px; }
  .v3-hero p { font-size: 12px; }
  .v3-tools-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
  /* 手机桌面APP式卡片:图标在上、文字在下,紧凑简洁 */
  .v3-tool-card { flex-direction: column; align-items: center; gap: 6px; padding: 10px 4px 8px; border-radius: 14px; text-align: center; }
  .v3-tool-icon { width: 40px; height: 40px; border-radius: 10px; }
  .v3-tool-icon svg { width: 20px; height: 20px; }
  .v3-tool-name { font-size: 11px; font-weight: 600; line-height: 1.2; }
  .v3-tool-desc { display: none; }
  .v3-friends-grid { grid-template-columns: 1fr; }
  .v3-bottom-row { grid-template-columns: 1fr; }
  /* 工作区重排:原图(1) → 结果(2) → 参数(3) */
  .v3-ws-grid { display: flex; flex-direction: column; }
  .v3-ws-grid > article:nth-child(1) { order: 1; }
  .v3-ws-grid > article:nth-child(2) { order: 3; }
  .v3-ws-grid > article:nth-child(3) { order: 2; }
  /* 操作栏固定底部,始终可见下载按钮 */
  .v3-action-floating {
    position: sticky;
    bottom: 0;
    gap: 12px;
    padding: 8px 12px;
    flex-wrap: wrap;
    justify-content: center;
    background: color-mix(in srgb, var(--v3-card) 92%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--v3-border);
    z-index: 20;
  }
  .v3-action-cluster { gap: 8px; }
  .v3-action-icon { width: 40px; height: 40px; font-size: 18px; }
  .v3-action-primary, .v3-action-secondary { height: 40px; font-size: 14px; padding: 0 16px; }
  .v3-seg button { height: 38px; font-size: 14px; padding: 0 10px; }
  .v3-ws-canvas { aspect-ratio: 4 / 3; max-height: 240px; }
  .v3-ws-card-head { font-size: 11px; padding: 6px 8px; }
  .v3-ws-card-foot { font-size: 10px; padding: 5px 8px; }
  /* #移动端App化:参数区贴顶、高度随内容自适应、不垂直居中不撑满,消除留白 */
  .v3-params { justify-content: flex-start; min-height: 0; flex: 0 0 auto; padding: 10px 12px; gap: 10px; }
  .v3-ws-grid { padding-bottom: 4px; }
  /* 参数卡跟随内容高度,不强制等高 */
  .v3-ws-grid > article:nth-child(2) { min-height: 0; }
  /* 操作栏始终固定视口底部,参数区内容多时可滚到操作栏上方 */
  .v3-action-floating { position: fixed; left: 0; right: 0; bottom: 0; border-radius: 0; }
  body.v3 { padding-bottom: 124px; }
}

/* 水印九宫格位置选择器 */
.v3-wm-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  width: 120px;
  margin: 4px auto;
  justify-self: center;
}
.v3-wm-grid button {
  width: 100%;
  height: 32px;
  border: 1px solid var(--v3-border);
  background: var(--v3-card-bg);
  color: var(--v3-muted-fg);
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  min-width: 32px;
  min-height: 32px;
}
.v3-wm-grid button:hover {
  border-color: var(--v3-primary);
  color: var(--v3-primary);
}
.v3-wm-grid button.active {
  background: var(--v3-primary);
  color: #fff;
  border-color: var(--v3-primary);
}

/* 间距修复(UI-8 批量处理按钮 / UI-9 AI 按钮:与上方滑块拉开距离) */
#v3-batch-run { margin-top: 12px; }
#v3-ai-process { margin-top: 12px; }
#v3-ai-select, #v3-ai-clear { margin-top: 8px; }