/* ===============================================================
   代码汪汪 CodeWW —— 全站样式
   浅色为主，跟随系统深色模式；所有工具页共用
   =============================================================== */

:root {
  --bg: #fff8f0;
  --bg-soft: #fdf0e0;
  --surface: #ffffff;
  --surface-2: #fffaf4;
  --border: #f0dfca;
  --border-strong: #e3c9ab;
  --text: #2b2118;
  --text-soft: #6b5949;
  --muted: #9c8871;
  --primary: #f0863a;
  --primary-strong: #d3651a;
  --primary-soft: #ffe9d6;
  --ok: #2f9e6f;
  --ok-soft: #e2f6ec;
  --err: #d94b3f;
  --err-soft: #fde7e4;
  --warn: #b8801a;
  --shadow: 0 1px 2px rgba(90, 60, 20, .04), 0 10px 30px -18px rgba(120, 80, 40, .35);
  --r: 14px;
  --r-sm: 9px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Cascadia Mono", "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17120e;
    --bg-soft: #1d1712;
    --surface: #211a14;
    --surface-2: #1b1511;
    --border: #35291f;
    --border-strong: #4a3a2b;
    --text: #f4ebdf;
    --text-soft: #cbb9a6;
    --muted: #98846f;
    --primary: #ffa45b;
    --primary-strong: #ffbe8c;
    --primary-soft: #3a2718;
    --ok: #4cc38a;
    --ok-soft: #1c3328;
    --err: #ff6b5e;
    --err-soft: #3a1f1c;
    --warn: #e0b050;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px -18px rgba(0, 0, 0, .8);
  }
}

html[data-theme="light"] { color-scheme: light; }
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #17120e; --bg-soft: #1d1712; --surface: #211a14; --surface-2: #1b1511;
  --border: #35291f; --border-strong: #4a3a2b; --text: #f4ebdf; --text-soft: #cbb9a6;
  --muted: #98846f; --primary: #ffa45b; --primary-strong: #ffbe8c; --primary-soft: #3a2718;
  --ok: #4cc38a; --ok-soft: #1c3328; --err: #ff6b5e; --err-soft: #3a1f1c; --warn: #e0b050;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.3; margin: 0 0 .4em; }
h1 { font-size: 1.7rem; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 .8em; }

code, kbd, pre, .mono { font-family: var(--font-mono); font-size: .92em; }

kbd {
  display: inline-block; padding: 1px 6px; border-radius: 6px;
  border: 1px solid var(--border-strong); background: var(--surface-2);
  font-size: .8rem; color: var(--text-soft);
}

mark { background: var(--primary-soft); color: inherit; border-radius: 3px; padding: 0 2px; }
mark.hl-hit { background: var(--primary); color: #fff; }

::selection { background: var(--primary-soft); }

/* ---------- 布局 ---------- */
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 780px; }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex; align-items: center; gap: 14px; height: 60px;
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--text); font-size: 1.02rem; }
.brand:hover { text-decoration: none; }
.brand .mascot { width: 30px; height: 30px; flex: none; }
.brand small { color: var(--muted); font-weight: 500; font-size: .78rem; letter-spacing: .04em; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.site-nav a {
  padding: 6px 11px; border-radius: var(--r-pill, 999px); color: var(--text-soft);
  font-size: .92rem; font-weight: 500;
}
.site-nav a:hover { background: var(--surface); color: var(--text); text-decoration: none; }
.site-nav a[aria-current="page"] { background: var(--primary-soft); color: var(--primary-strong); }
.icon-btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--text-soft);
  width: 34px; height: 34px; border-radius: 10px; cursor: pointer; font-size: 15px;
  display: grid; place-items: center; transition: .15s;
}
.icon-btn:hover { border-color: var(--border-strong); color: var(--text); }

/* ---------- 首页 hero ---------- */
.hero { padding: 44px 0 10px; }
.hero-inner { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.hero .mascot { width: 108px; height: 108px; flex: none; }
.hero-copy { flex: 1 1 320px; }
.hero h1 { font-size: 2.1rem; margin-bottom: .25em; }
.hero p.lead { color: var(--text-soft); font-size: 1.02rem; margin-bottom: .9em; max-width: 46em; }
.hero-badges { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- 搜索 ---------- */
.search-field { position: relative; max-width: 420px; margin: 14px 0 0; }
.search-field .input { padding-left: 34px; }
.search-field::before {
  content: "🐾"; position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  font-size: 13px; opacity: .7;
}

/* ---------- 工具卡片 ---------- */
.cat-section { margin: 34px 0; scroll-margin-top: 76px; }
.cat-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.cat-head h2 { margin: 0; font-size: 1.14rem; }
.cat-head .hint { margin: 0; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(238px, 1fr)); gap: 12px; }
.tool-card {
  display: block; padding: 15px 16px; border: 1px solid var(--border); border-radius: var(--r);
  background: var(--surface); color: var(--text); transition: .16s ease; box-shadow: var(--shadow);
}
.tool-card:hover {
  text-decoration: none; transform: translateY(-2px);
  border-color: var(--primary); box-shadow: 0 12px 28px -16px rgba(217, 101, 26, .5);
}
.tool-card .tc-top { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; }
.tool-card .tc-icon { font-size: 1.1rem; }
.tool-card .tc-title { font-weight: 650; font-size: 1rem; }
.tool-card .tc-desc { color: var(--text-soft); font-size: .87rem; line-height: 1.6; margin: 0; }
.tool-card[hidden] { display: none; }
.empty-state { color: var(--muted); padding: 30px 0; text-align: center; }

/* ---------- 工具页 ---------- */
.crumb { color: var(--muted); font-size: .85rem; padding: 18px 0 0; }
.crumb a { color: var(--muted); }
.tool-head { padding: 6px 0 20px; border-bottom: 1px solid var(--border); margin-bottom: 22px; }
.tool-head h1 { margin-bottom: .28em; }
.tool-head .lead { color: var(--text-soft); margin-bottom: .7em; max-width: 52em; }
.tool { display: block; }
.related { margin: 40px 0 10px; padding-top: 22px; border-top: 1px solid var(--border); }
.related h2 { font-size: 1rem; color: var(--text-soft); margin-bottom: 10px; }
.related-list { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- 通用块 ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 760px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row-between { display: flex; gap: 10px; align-items: baseline; justify-content: space-between; flex-wrap: wrap; }
.stack > * + * { margin-top: 12px; }
.divider { height: 1px; background: var(--border); border: 0; margin: 18px 0; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 16px; box-shadow: var(--shadow);
}
.card-title { font-size: 1rem; font-weight: 650; margin: 0 0 10px; display: flex; align-items: center; gap: 7px; }

.field { margin-bottom: 12px; }
.field:last-child { margin-bottom: 0; }
.label { display: block; font-size: .84rem; font-weight: 600; color: var(--text-soft); margin-bottom: 5px; }
.hint { color: var(--muted); font-size: .84rem; line-height: 1.6; margin: 0; }
.empty { color: var(--muted); padding: 18px; text-align: center; font-size: .9rem; }
.notice {
  background: var(--primary-soft); border: 1px solid var(--border-strong);
  border-radius: var(--r-sm); padding: 10px 12px; font-size: .86rem; color: var(--text-soft);
}
.notice strong { color: var(--text); }

/* ---------- 表单控件 ---------- */
.input, .textarea, .select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border-strong);
  border-radius: var(--r-sm); background: var(--surface-2); color: var(--text);
  font-family: inherit; font-size: .93rem; transition: .15s;
}
.textarea { font-family: var(--font-mono); font-size: .88rem; line-height: 1.6; resize: vertical; min-height: 90px; }
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: var(--primary); background: var(--surface);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.select { appearance: none; padding-right: 28px; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 15px) 50%, calc(100% - 10px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: .89rem; color: var(--text-soft); cursor: pointer; user-select: none; }
.check input { accent-color: var(--primary); width: 15px; height: 15px; }
.range { width: 100%; accent-color: var(--primary); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 15px;
  border: 1px solid var(--border-strong); border-radius: var(--r-sm);
  background: var(--surface); color: var(--text); font-family: inherit;
  font-size: .9rem; font-weight: 550; cursor: pointer; transition: .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary-strong); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-strong); border-color: var(--primary-strong); color: #fff; }
.btn.ghost { background: transparent; border-color: var(--border); color: var(--text-soft); }
.btn.ghost:hover { background: var(--surface); color: var(--text); }
.btn.danger { color: var(--err); border-color: var(--err); }
.btn.danger:hover { background: var(--err-soft); color: var(--err); }
.btn.sm { padding: 4px 10px; font-size: .82rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

/* ---------- 输出块 ---------- */
.out {
  font-family: var(--font-mono); font-size: .86rem; line-height: 1.65;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--r-sm);
  padding: 11px 12px; min-height: 70px; max-height: 460px; overflow: auto;
  white-space: pre-wrap; word-break: break-word; color: var(--text);
}
.out-error { border-color: var(--err); background: var(--err-soft); color: var(--err); }
.out-ok { border-color: var(--ok); }

/* ---------- 标签与统计 ---------- */
.tag {
  display: inline-block; padding: 2px 9px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary-strong);
  font-size: .8rem; font-weight: 550; border: 1px solid transparent;
}
a.tag:hover, button.tag:hover { border-color: var(--primary); text-decoration: none; }
button.tag { cursor: pointer; font-family: inherit; }
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.stats { display: flex; flex-wrap: wrap; gap: 16px; padding: 10px 0; }
.stat { display: flex; flex-direction: column; min-width: 68px; }
.stat-label { font-size: .76rem; color: var(--muted); }
.stat-value { font-size: 1.02rem; font-weight: 650; font-family: var(--font-mono); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-sm); }
.table { width: 100%; border-collapse: collapse; font-size: .87rem; }
.table th, .table td { padding: 7px 11px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table th { background: var(--surface-2); font-weight: 600; color: var(--text-soft); font-size: .82rem; }
.table tr:last-child td { border-bottom: 0; }
.table td.mono, .table .mono { font-family: var(--font-mono); white-space: pre-wrap; word-break: break-all; }

/* ---------- 选项卡 ---------- */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--border); margin-bottom: 14px; }
.tab {
  padding: 7px 13px; border: 0; background: none; color: var(--text-soft);
  font-family: inherit; font-size: .9rem; font-weight: 550; cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary-strong); border-bottom-color: var(--primary); }

/* ---------- 颜色 ---------- */
.swatch-row { display: flex; flex-wrap: wrap; gap: 8px; }
.swatch {
  width: 62px; height: 52px; border-radius: var(--r-sm); border: 1px solid var(--border-strong);
  cursor: pointer; position: relative; padding: 0; overflow: hidden;
}
.swatch span {
  position: absolute; bottom: 0; left: 0; right: 0; font-size: .66rem; text-align: center;
  background: rgba(0, 0, 0, .55); color: #fff; padding: 1px 0; font-family: var(--font-mono);
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 56px; padding: 26px 0 40px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: .86rem; background: var(--bg-soft);
}
.site-footer .f-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.site-footer a { color: var(--text-soft); }
.site-footer .f-dog { margin-bottom: 8px; }

/* ---------- toast ---------- */
.toast-wrap { position: fixed; right: 18px; bottom: 18px; z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: flex-end; }
.toast {
  background: var(--text); color: var(--bg); padding: 9px 14px; border-radius: 10px;
  font-size: .88rem; box-shadow: 0 10px 26px -10px rgba(0, 0, 0, .5);
  animation: toast-in .18s ease-out; max-width: 76vw;
}
.toast.ok { background: var(--ok); color: #fff; }
.toast.err { background: var(--err); color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- 工具类 ---------- */
.w-auto { width: auto !important; }
.grow { flex: 1 1 220px; }
.break-all { word-break: break-all; }
.col-72 { width: 72px; }
.col-110 { width: 110px; }
.col-190 { width: 190px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mb-0 { margin-bottom: 0 !important; }
.inline-label { margin: 0; }
.btn-row.tight { margin-top: 0; }

/* ---------- 其它 ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.footer-note { margin-top: 10px; }
@media print { .site-header, .site-footer, .toast-wrap { display: none; } }