/* ============ ToolKit 全局样式（明 / 暗双主题） ============ */
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e4e7ec;
  --text: #14181f;
  --muted: #687385;
  --primary: #4f46e5;
  --primary-soft: #eef0fe;
  --privacy: #10b981;
  --privacy-soft: #e7f7f0;
  --warn: #f59e0b;
  --danger: #ef4444;
  --ad: #f1f3f7;
  --ad-border: #d9deea;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 4px 16px rgba(16,24,40,.06);
  --radius: 14px;
  --radius-sm: 10px;
  --max: 1200px;
}
html[data-theme="dark"] {
  --bg: #0e1117;
  --surface: #171b22;
  --surface-2: #1f2530;
  --border: #2a313c;
  --text: #e7eaef;
  --muted: #9aa6b5;
  --primary: #7c83ff;
  --primary-soft: #20243a;
  --privacy: #34d399;
  --privacy-soft: #122a23;
  --warn: #fbbf24;
  --danger: #f87171;
  --ad: #1b2129;
  --ad-border: #2c343f;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: color-mix(in srgb, var(--primary) 28%, transparent); }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--max); margin: 0 auto;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; white-space: nowrap; }
.brand .logo {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  display: grid; place-items: center; color: #fff;
}
.brand small { display: block; font-weight: 500; font-size: 11px; color: var(--muted); }
.search {
  flex: 1; display: flex; align-items: center; gap: 8px; position: relative; min-width: 0;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 16px; max-width: 520px;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.search:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); }
.search:focus-within {
  border-color: var(--primary); background: var(--surface);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 16%, transparent);
}
.search input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--text); font-size: 14px; outline: none; }
.search > svg { flex: none; color: var(--muted); transition: color .15s; }
.search:focus-within > svg { color: var(--primary); }
.search-clear {
  flex: none; display: grid; place-items: center; width: 20px; height: 20px; padding: 0;
  border: 1px solid var(--border); border-radius: 50%;
  background: var(--surface); color: var(--muted); transition: .15s;
}
.search-clear:hover { color: var(--primary); border-color: var(--primary); }
.search-clear[hidden] { display: none; }
.top-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.pill-btn {
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); border-radius: 999px; padding: 7px 12px;
  font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 6px;
  transition: .15s;
}
.pill-btn:hover { border-color: var(--primary); color: var(--primary); }
.privacy-pill {
  display: flex; align-items: center; gap: 6px;
  background: var(--privacy-soft); color: var(--privacy);
  border: 1px solid color-mix(in srgb, var(--privacy) 35%, transparent);
  border-radius: 999px; padding: 7px 12px; font-size: 12.5px; font-weight: 700; white-space: nowrap;
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .topbar-inner { flex-wrap: wrap; gap: 10px; padding: 10px 14px; }
  .search { order: 3; flex-basis: 100%; max-width: none; }
  .search input { font-size: 16px; }
  .top-actions { gap: 6px; }
  main { padding: 16px 14px 60px; }
  .section-title { margin: 28px 0 14px; }
  #view-home .section-title:first-of-type { margin-top: 2px; }
}
@media (max-width: 420px) {
  .brand small { display: none; }
  .brand { font-size: 16px; }
  .privacy-pill { padding: 7px 10px; font-size: 12px; }
}

/* ---------- Layout ---------- */
main { max-width: var(--max); margin: 0 auto; padding: 24px 20px 80px; }
.view { display: none; }
.view.active { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- Section ---------- */
.section-title { display: flex; align-items: baseline; gap: 10px; margin: 36px 0 16px; flex-wrap: wrap; }
#view-home .section-title:first-of-type { margin-top: 4px; }
.section-title h2, .section-title h1 { font-size: 19px; margin: 0; }
.section-title span { color: var(--muted); font-size: 13px; }

/* ---------- Buttons ---------- */
.btn-primary {
  background: var(--primary); color: #fff; border: 0; border-radius: 10px;
  padding: 10px 16px; font-weight: 700; font-size: 14px; transition: .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary:hover { filter: brightness(1.07); transform: translateY(-1px); }
.btn-primary:disabled { opacity: .5; pointer-events: none; }
.btn-ghost {
  background: var(--surface); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 16px; font-weight: 600; font-size: 14px; transition: .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
@media (max-width: 900px) { .cat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
.cat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 14px; text-align: center; transition: .15s; box-shadow: var(--shadow);
  display: block;
}
.cat-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.cat-card .ic {
  width: 46px; height: 46px; border-radius: 12px; margin: 0 auto 10px;
  display: grid; place-items: center; background: var(--primary-soft); color: var(--primary);
}
.cat-card .nm { font-weight: 700; font-size: 14.5px; }
.cat-card .ct { color: var(--muted); font-size: 12px; margin-top: 2px; }

/* ---------- Tool grid ---------- */
.tool-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 1000px) { .tool-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px) { .tool-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .tool-grid { grid-template-columns: 1fr; } }
.tool-card {
  position: relative;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; transition: .15s; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 8px;
}
.tool-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.tool-card .row { display: flex; align-items: center; gap: 10px; }
.tool-card .ic {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  display: grid; place-items: center; background: var(--surface-2); color: var(--primary);
}
.tool-card .nm { font-weight: 700; font-size: 14.5px; }
.tool-card .ds { color: var(--muted); font-size: 12.5px; }
.tool-card .tag {
  align-self: flex-start; font-size: 11px; font-weight: 700; color: var(--muted);
  background: var(--surface-2); border-radius: 6px; padding: 2px 8px;
}
/* 热榜名次徽章（近 7 天使用排行，由 /api/hot.json 注入前 3 名） */
.tool-card .rank {
  flex: none; width: 20px; height: 20px; border-radius: 6px;
  display: grid; place-items: center;
  font-size: 11.5px; font-weight: 800; line-height: 1;
  background: var(--surface-2); color: var(--muted);
}
.tool-card .rank[data-rank="1"] { background: #f59e0b; color: #fff; }
.tool-card .rank[data-rank="2"] { background: #94a3b8; color: #fff; }
.tool-card .rank[data-rank="3"] { background: #b45309; color: #fff; }
.search-empty { text-align: center; color: var(--muted); padding: 40px 0; font-size: 14px; }

/* ---------- Breadcrumb ---------- */
.crumb { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; margin-bottom: 8px; flex-wrap: wrap; }
.crumb a:hover { color: var(--primary); }

/* ---------- Tool page layout ---------- */
.tool-layout { display: grid; grid-template-columns: 1fr 300px; gap: 20px; align-items: start; }
@media (max-width: 860px) { .tool-layout { grid-template-columns: 1fr; } }
.tool-panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.tool-head { padding: 18px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 12px; }
.tool-head .ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); flex: none; }
.tool-head h1, .tool-head h2 { margin: 0; font-size: 18px; }
.tool-head .sub { color: var(--muted); font-size: 13px; }
.privacy-note {
  margin: 14px 20px 0; display: flex; align-items: center; gap: 8px;
  background: var(--privacy-soft); color: var(--privacy);
  border: 1px solid color-mix(in srgb, var(--privacy) 30%, transparent);
  border-radius: var(--radius-sm); padding: 10px 14px; font-size: 13px; font-weight: 600;
}
.privacy-note svg { flex: none; }
/* 工具界面由 JS 生成：min-height 用实测值预留（tools/measure-heights.js），
 * 首绘即最终高度，避免面板从 40px 撑开把下面内容顶走。 */
.tool-body { padding: 18px 20px 22px; position: relative; min-height: var(--h1, 320px); }
@media (max-width: 860px) { .tool-body { min-height: var(--h2, var(--h1, 320px)); } }
@media (max-width: 480px) { .tool-body { min-height: var(--h3, var(--h2, var(--h1, 320px))); } }
/* 骨架屏：绝对定位填满预留区，不参与文档流，替换内容时零位移 */
.t-skel { position: absolute; inset: 18px 20px 22px; display: flex; flex-direction: column; gap: 12px; pointer-events: none; }
.t-skel i { display: block; border-radius: 8px; border: 1px solid var(--border); background: var(--surface-2); }
.t-skel .b1 { width: 88px; height: 13px; border: 0; background: var(--border); }
.t-skel .b2 { flex: 1 1 auto; min-height: 90px; }
.t-skel .b3 { width: 160px; height: 36px; }
.t-skel .b4 { width: 55%; height: 13px; border: 0; background: var(--border); }
@media (prefers-reduced-motion: no-preference) {
  .t-skel i { animation: tk-pulse 1.5s ease-in-out infinite; }
  .t-skel .b2 { animation-delay: .08s; }
  .t-skel .b3 { animation-delay: .16s; }
}
@keyframes tk-pulse { 0%, 100% { opacity: .5; } 50% { opacity: .95; } }
.tool-seo {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; margin-top: 20px; box-shadow: var(--shadow);
}
.tool-seo h2 { font-size: 16px; margin: 0 0 8px; }
.tool-seo p { margin: 0; color: var(--muted); font-size: 13.5px; }

/* ---------- 工具页通用控件 ---------- */
.field-label { font-size: 13px; font-weight: 700; margin: 4px 0 8px; color: var(--muted); }
.field-label .sub { font-weight: 500; opacity: .8; }
textarea, input[type="text"], input[type="number"], select {
  width: 100%; border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text); border-radius: var(--radius-sm); padding: 12px; font-size: 13.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; outline: none; resize: vertical;
  transition: border-color .15s, box-shadow .15s;
}
textarea:focus, input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 14%, transparent);
}
select { font-family: inherit; cursor: pointer; }
input[type="range"] { width: 100%; accent-color: var(--primary); }
.btn-row { display: flex; gap: 10px; margin: 14px 0; flex-wrap: wrap; align-items: center; }
.check-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.check-row label { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); cursor: pointer; user-select: none; }
.check-row input { accent-color: var(--primary); width: 15px; height: 15px; }
.out {
  min-height: 120px; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px; font-size: 13px; white-space: pre-wrap; word-break: break-all;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--text);
}
.out.ok { border-color: color-mix(in srgb, var(--privacy) 40%, transparent); }
.out.err { border-color: color-mix(in srgb, var(--danger) 45%, transparent); color: var(--danger); }
.out-tall { min-height: 220px; }
.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }
.hint.err { color: var(--danger); }
.hint.ok { color: var(--privacy); }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 12px 0; }
.kv .item { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; }
.kv .item .k { font-size: 11.5px; color: var(--muted); font-weight: 700; }
.kv .item .v { font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.tabs button {
  border: 1px solid var(--border); background: var(--surface-2); color: var(--muted);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; font-weight: 700; transition: .15s;
}
.tabs button.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.drop {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 28px 16px;
  text-align: center; color: var(--muted); font-size: 13.5px; cursor: pointer; transition: .15s;
  background: var(--surface-2);
}
.drop:hover, .drop.over { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.drop .big { font-size: 15px; font-weight: 700; display: block; margin-bottom: 4px; }
.preview-img { max-width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--border); display: block; margin: 10px auto; }
.strength { height: 8px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); overflow: hidden; margin-top: 10px; }
.strength > i { display: block; height: 100%; width: 0; background: var(--danger); transition: width .2s, background .2s; }
.strength-label { font-size: 12px; font-weight: 700; margin-top: 6px; color: var(--muted); }
.md-preview { min-height: 300px; }
.md-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
@media (max-width: 760px) { .md-layout { grid-template-columns: 1fr; } }
.md-preview h1, .md-preview h2, .md-preview h3 { line-height: 1.3; }
.md-preview pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px; overflow: auto; font-size: 13px; }
.md-preview code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--surface-2); border-radius: 5px; padding: 1px 5px; }
.md-preview pre code { background: none; padding: 0; }
.md-preview blockquote { border-left: 3px solid var(--primary); margin: 10px 0; padding: 2px 12px; color: var(--muted); }
.md-preview table { border-collapse: collapse; }
.md-preview th, .md-preview td { border: 1px solid var(--border); padding: 6px 10px; font-size: 13.5px; }
.regex-out mark { background: color-mix(in srgb, var(--warn) 45%, transparent); color: inherit; border-radius: 3px; padding: 0 1px; }
.regex-out .g0 { background: color-mix(in srgb, var(--primary) 30%, transparent); }
.qr-canvas { image-rendering: pixelated; border-radius: var(--radius-sm); border: 1px solid var(--border); background: #fff; }

/* ---------- Ad slot ---------- */
.ad-slot {
  background: var(--ad); border: 1px dashed var(--ad-border); border-radius: var(--radius);
  padding: 14px; text-align: center; color: var(--muted); font-size: 12px;
}
.ad-slot .label { font-size: 10.5px; letter-spacing: 1px; text-transform: uppercase; font-weight: 700; opacity: .7; margin-bottom: 8px; }
.ad-box { min-height: 220px; border-radius: var(--radius-sm); display: grid; place-items: center; background: var(--surface); border: 1px solid var(--border); color: var(--muted); font-size: 13px; padding: 10px; }
.ad-bottom { margin-top: 22px; }
.ad-bottom .ad-box { min-height: 90px; }
.ad-side { position: sticky; top: 84px; }
@media (max-width: 860px) { .ad-side { position: static; } }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--border); margin-top: 40px; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 22px 20px; color: var(--muted); font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast {
  background: var(--text); color: var(--bg); font-size: 13px; font-weight: 600;
  border-radius: 999px; padding: 9px 18px; box-shadow: var(--shadow);
  animation: toast-in .2s ease; max-width: 80vw;
}
.toast.ok { background: var(--privacy); color: #fff; }
.toast.err { background: var(--danger); color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- 收藏星标（core.js 运行时注入） ---------- */
.fav-star {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  width: 28px; height: 28px; padding: 0; border: 0; border-radius: 8px;
  background: transparent; color: var(--muted); opacity: .5;
  display: grid; place-items: center; transition: .15s;
}
.fav-star:hover { opacity: 1; color: var(--warn); background: var(--surface-2); }
.fav-star.on { opacity: 1; color: var(--warn); }

/* ---------- 通用布局补充 ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
@media (max-width: 760px) { .grid-2 { grid-template-columns: 1fr; } }
.media-video { width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--border); background: #000; display: block; }
.barcode-svg { background: #fff; border-radius: var(--radius-sm); border: 1px solid var(--border); max-width: 100%; display: block; margin: 0 auto; }
.big-display { font-size: 44px; font-weight: 800; text-align: center; padding: 16px 0 8px; font-variant-numeric: tabular-nums; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; word-break: break-all; }
.big-display.warn { color: var(--danger); }

/* ---------- Diff 对比 ---------- */
.diff-box {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px;
  border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: auto;
  max-height: 540px; background: var(--surface-2);
}
.diff-line { display: flex; gap: 10px; padding: 1px 10px; white-space: pre-wrap; word-break: break-all; }
.diff-line .no { color: var(--muted); user-select: none; min-width: 44px; text-align: right; font-size: 11px; padding-top: 2px; flex: none; }
.diff-add { background: color-mix(in srgb, var(--privacy) 14%, transparent); }
.diff-del { background: color-mix(in srgb, var(--danger) 13%, transparent); }
.diff-same { color: var(--muted); }
.diff-stat { font-size: 12.5px; font-weight: 700; margin: 8px 2px; }
.diff-stat .add { color: var(--privacy); }
.diff-stat .del { color: var(--danger); }

/* ---------- 计时器 ---------- */
.timer-display {
  font-size: 52px; font-weight: 800; text-align: center; padding: 20px 0 10px;
  font-variant-numeric: tabular-nums; letter-spacing: 2px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.timer-display.warn { color: var(--danger); }
.timer-laps { max-height: 180px; overflow: auto; font-size: 12.5px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.timer-laps .row { display: flex; justify-content: space-between; padding: 4px 10px; border-bottom: 1px dashed var(--border); }

/* ---------- 表格（EXIF / 金融等） ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th, .data-table td { border: 1px solid var(--border); padding: 7px 10px; text-align: left; }
.data-table th { background: var(--surface-2); font-size: 12px; color: var(--muted); font-weight: 700; white-space: nowrap; }
.data-table td { word-break: break-all; }
.data-table td.num { font-variant-numeric: tabular-nums; text-align: right; font-family: ui-monospace, Menlo, Consolas, monospace; }
.table-wrap { overflow: auto; border-radius: var(--radius-sm); }