:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --card: #1c2330;
  --border: #2d3748;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #4f8cff;
  --accent2: #2ea043;
  --danger: #f85149;
  --code: #0b0f14;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.brand { color: var(--text); text-decoration: none; font-weight: 700; font-size: 17px; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.top nav a:hover { color: var(--text); }

main { max-width: 960px; margin: 0 auto; padding: 24px 16px 64px; }

.hero { text-align: center; padding: 28px 0 20px; }
.hero h1 { margin: 0 0 6px; font-size: 28px; }
.hero p { margin: 0 0 18px; color: var(--muted); }

.search { max-width: 520px; margin: 0 auto; }

.cat { margin-top: 28px; }
.cat h2 { font-size: 16px; color: var(--muted); margin: 0 0 12px; font-weight: 600; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }

.tile {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 14px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.12s, border-color 0.12s;
}
.tile:hover { transform: translateY(-2px); border-color: var(--accent); }
.tile-icon { font-size: 26px; margin-bottom: 8px; }
.tile-name { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.tile-desc { font-size: 12px; color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 16px;
}

label { display: block; font-size: 13px; color: var(--muted); margin: 0 0 6px; }

input, select, textarea {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 90px; }

.row { display: flex; gap: 10px; align-items: center; }
.row > * { flex: 1; }
.row select { flex: 0 0 auto; width: auto; }

.btn-row { display: flex; gap: 10px; margin: 12px 0; flex-wrap: wrap; }

.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { filter: brightness(1.1); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); }
.btn.small { padding: 5px 12px; font-size: 12px; }

.hint { font-size: 12px; color: var(--muted); margin-top: 8px; }
.hint.ok { color: var(--accent2); }
.hint.err { color: var(--danger); }

pre {
  background: var(--code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  overflow: auto;
  font-family: "Cascadia Code", Consolas, "Courier New", monospace;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
  min-height: 20px;
}

.cmd { margin-bottom: 14px; }
.cmd-head { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 13px; margin-bottom: 6px; }

.params { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-top: 14px; }

.back { display: inline-block; color: var(--muted); text-decoration: none; font-size: 14px; margin-bottom: 14px; }
.back:hover { color: var(--text); }

.tool-head { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.tool-icon { font-size: 34px; }
.tool-head h1 { margin: 0; font-size: 22px; }
.tool-head p { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
.star {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 18px;
  padding: 6px 12px;
  cursor: pointer;
}
.star.on { color: #f0b429; border-color: #f0b429; }

.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th, .tbl td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
.tbl th { color: var(--muted); font-weight: 600; }
.tbl tr:hover td { background: var(--bg2); }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; }
.b1xx { background: #1f6feb33; color: #79b8ff; }
.b2xx { background: #2ea04333; color: #56d364; }
.b3xx { background: #d2992233; color: #e3b341; }
.b4xx { background: #f8514933; color: #ff7b72; }
.b5xx { background: #a371f733; color: #d2a8ff; }

.ts-now { display: grid; gap: 10px; }
.ts-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.ts-row > span { color: var(--muted); font-size: 13px; flex: 0 0 auto; }
.ts-val { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: flex-end; }
.ts-val code { font-family: "Cascadia Code", Consolas, monospace; font-size: 13px; }

.checks { display: flex; gap: 16px; flex-wrap: wrap; margin: 12px 0; }
.chk { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text); }
.chk input { width: auto; }

.pw-list, .uuid-list { display: grid; gap: 8px; margin-top: 12px; }
.pw-row, .uuid-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; }
.pw-row code, .uuid-row code { font-family: "Cascadia Code", Consolas, monospace; font-size: 13px; word-break: break-all; }

.empty { text-align: center; color: var(--muted); padding: 40px 0; }

.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 24px 0 40px; }

@media (max-width: 600px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .hero h1 { font-size: 22px; }
  .tool-head { flex-wrap: wrap; }
}