/* ================= Fast Index Google design system ================= */
:root {
  --bg: #f4f6fb;
  --bg-soft: #eaeef8;
  --card: #ffffff;
  --card-2: #f8fafc;
  --border: #e2e8f2;
  --text: #0f172a;
  --muted: #5c6b8a;
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --accent-soft: #eef4ff;
  --green: #15803d;
  --green-soft: #ecfdf3;
  --red: #dc2626;
  --red-soft: #fef2f2;
  --amber: #b45309;
  --amber-soft: #fffbeb;
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 10px 30px rgba(15, 23, 42, .07);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .16);
  --radius: 16px;
  --radius-sm: 10px;
}
[data-theme="dark"] {
  --bg: #0a0f1f;
  --bg-soft: #0e1530;
  --card: #111836;
  --card-2: #0f1730;
  --border: #22305c;
  --text: #e7ecf7;
  --muted: #93a2c4;
  --accent: #5f8dff;
  --accent-2: #a78bfa;
  --accent-soft: #17224a;
  --green: #34d399;
  --green-soft: #0d2b22;
  --red: #f87171;
  --red-soft: #36161d;
  --amber: #fbbf24;
  --amber-soft: #33260a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { letter-spacing: -.02em; line-height: 1.25; }
h1 { font-size: 26px; margin: 0; }
h2 { font-size: 19px; margin: 0 0 14px; }
h3 { font-size: 15.5px; margin: 0 0 10px; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 22px 20px 70px; }

/* ================= nav ================= */
.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 12px 22px;
  background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 17px; color: var(--text);
}
.nav-brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-size: 17px; box-shadow: 0 4px 14px rgba(79, 70, 229, .35);
}
.nav-links { display: flex; gap: 4px; margin-left: 8px; flex-wrap: wrap; }
.nav-links a {
  color: var(--muted); font-weight: 600; font-size: 14px;
  padding: 7px 13px; border-radius: 9px; transition: all .15s ease;
}
.nav-links a:hover { color: var(--text); background: var(--bg-soft); text-decoration: none; }
.nav-links a.active { color: var(--accent); background: var(--accent-soft); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

/* ================= buttons ================= */
.btn {
  display: inline-flex; align-items: center; gap: 7px; justify-content: center;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: var(--radius-sm); padding: 10px 17px; font: 600 14px/1.2 inherit;
  cursor: pointer; transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  white-space: nowrap;
}
.btn:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 16px rgba(79, 70, 229, .35);
}
.btn.primary:hover { box-shadow: 0 8px 24px rgba(79, 70, 229, .45); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 11px; font-size: 13px; border-radius: 8px; }
.btn.danger { color: var(--red); border-color: color-mix(in srgb, var(--red) 35%, var(--border)); }
.btn.danger:hover { background: var(--red-soft); }
.btn:disabled { opacity: .55; cursor: default; transform: none; }
.btn.icon { padding: 8px 10px; }

/* ================= cards & layout ================= */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; margin-bottom: 18px; box-shadow: var(--shadow);
}
.page-head { margin: 6px 0 18px; }
.page-head p { color: var(--muted); margin: 6px 0 0; font-size: 14px; max-width: 780px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 18px; }
.stat {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 15px 17px; box-shadow: var(--shadow);
}
.stat .num { font-size: 27px; font-weight: 800; letter-spacing: -.03em; }
.stat .lbl { font-size: 12.5px; color: var(--muted); margin-top: 3px; font-weight: 500; }
.stat.accent .num { color: var(--accent); }
.stat.green .num { color: var(--green); }
.stat.red .num { color: var(--red); }

/* ================= chips / badges ================= */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font-size: 12.5px; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--card); color: var(--muted); white-space: nowrap; font-weight: 500;
}
.chip b { color: var(--text); font-weight: 700; }
.chip.ok { background: var(--green-soft); border-color: color-mix(in srgb, var(--green) 30%, transparent); color: var(--green); }
.chip.warn { background: var(--amber-soft); border-color: color-mix(in srgb, var(--amber) 30%, transparent); color: var(--amber); }

.badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600;
  padding: 4px 11px; border-radius: 999px; border: 1px solid transparent;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.gray { background: var(--bg-soft); color: var(--muted); }
.badge.blue { background: var(--accent-soft); color: var(--accent); }
.badge.green { background: var(--green-soft); color: var(--green); }
.badge.red { background: var(--red-soft); color: var(--red); }
.badge.amber { background: var(--amber-soft); color: var(--amber); }
.badge.blue .dot { animation: pulse 1.1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .2; } }

.tag {
  display: inline-block; font-size: 12px; padding: 3px 9px; border-radius: 7px;
  background: var(--bg-soft); color: var(--muted); margin: 0 6px 6px 0; font-weight: 500;
}

/* ================= forms ================= */
input[type="text"], input[type="search"], input[type="number"], input[type="password"], select, textarea {
  border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 11px 13px;
  font: 15px/1.4 inherit; outline: none; background: var(--card); color: var(--text);
  transition: border-color .15s ease, box-shadow .15s ease; width: 100%;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
textarea { resize: vertical; }
.field-label { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin: 0 0 6px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.hint { color: var(--muted); font-size: 12.5px; }
.hint b { color: var(--text); }

.submit-row { display: flex; gap: 10px; }
.submit-row.batch { margin-top: 10px; }
#url-input { flex: 1; min-width: 0; font-size: 15px; }
.submit-meta { display: flex; align-items: center; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.submit-meta .hint { flex: 1; min-width: 240px; }

/* switch */
.switch { display: flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.switch input { display: none; }
.switch .track {
  width: 40px; height: 22px; border-radius: 999px; background: var(--bg-soft);
  border: 1px solid var(--border); position: relative; transition: background .15s ease; flex: none;
}
.switch .track::after {
  content: ''; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--muted); transition: all .15s ease;
}
.switch input:checked + .track { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .track::after { left: 20px; background: #fff; }
.switch .sw-label { font-size: 13.5px; font-weight: 600; }

/* ================= tables ================= */
.table-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar-right { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.toolbar-right select, .toolbar-right input { width: auto; min-width: 130px; padding: 8px 11px; font-size: 13.5px; }
.table-scroll { overflow-x: auto; margin: 0 -6px; padding: 0 6px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); padding: 9px 10px; border-bottom: 1px solid var(--border);
  white-space: nowrap; font-weight: 700;
}
th.sortable { cursor: pointer; }
th.sortable:hover { color: var(--text); }
th .arrow { opacity: .5; font-size: 10px; }
td { padding: 11px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; white-space: nowrap; }
tbody tr { cursor: pointer; transition: background .1s ease; }
tbody tr:hover { background: var(--card-2); }
tbody tr:last-child td { border-bottom: none; }

.url-cell { display: flex; align-items: center; gap: 9px; max-width: 380px; }
.favicon {
  width: 22px; height: 22px; border-radius: 7px; flex: none; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-size: 11px; font-weight: 800;
}
.url-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.url-host { color: var(--muted); font-size: 11.5px; }

.empty { text-align: center; color: var(--muted); padding: 46px 0; font-size: 14px; }

/* skeleton */
.skeleton { animation: shimmer 1.3s linear infinite; background: var(--bg-soft); border-radius: 6px; height: 14px; }
@keyframes shimmer { 50% { opacity: .45; } }

/* bot matrix */
.bot-table { font-size: 13px; }
.bot-table th { font-size: 11px; padding: 7px 9px; }
.bot-table td { padding: 7px 9px; }

/* ================= progress / rings ================= */
.ring-wrap { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.ring-item { display: flex; flex-direction: column; align-items: center; gap: 7px; }
.ring {
  width: 82px; height: 82px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--rc, var(--accent)) calc(var(--rp, 0) * 1%), var(--bg-soft) 0);
}
.ring .inner {
  width: 62px; height: 62px; border-radius: 50%; background: var(--card);
  display: grid; place-items: center; font-weight: 800; font-size: 19px;
}
.ring-item .ring-label { font-size: 12px; color: var(--muted); font-weight: 600; text-align: center; max-width: 92px; }

.bar { height: 7px; border-radius: 99px; background: var(--bg-soft); overflow: hidden; min-width: 70px; }
.bar-fill { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }

/* ================= modal ================= */
.backdrop {
  position: fixed; inset: 0; background: rgba(10, 15, 31, .55); z-index: 60;
  display: flex; align-items: flex-start; justify-content: center; padding: 5vh 16px; overflow-y: auto;
  backdrop-filter: blur(3px);
}
.modal {
  background: var(--card); border: 1px solid var(--border); border-radius: 18px;
  width: 880px; max-width: 100%; box-shadow: var(--shadow-lg);
  animation: pop .18s cubic-bezier(.2, .9, .3, 1.2);
}
@keyframes pop { from { transform: translateY(10px) scale(.98); opacity: .5; } }
.modal-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 12px;
  padding: 18px 20px; border-bottom: 1px solid var(--border); position: sticky; top: 0;
  background: var(--card); border-radius: 18px 18px 0 0; z-index: 2;
}
.modal-title { font-weight: 800; font-size: 16.5px; word-break: break-all; }
.modal-sub { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
.modal-body { padding: 18px 20px 24px; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 760px) { .detail-grid { grid-template-columns: 1fr; } }
.detail-box { border: 1px solid var(--border); border-radius: 13px; padding: 13px 15px; background: var(--card-2); }
.detail-box h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.kv { display: grid; grid-template-columns: 132px 1fr; gap: 5px 10px; font-size: 13.5px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-word; }
.check-line { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px dashed var(--border); font-size: 13.5px; }
.check-line:last-child { border-bottom: none; }
.check-line > span:first-child { color: var(--muted); }
.check-line > span:last-child { font-weight: 600; text-align: right; }

.verdict {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  border-radius: 10px; padding: 11px 14px; margin-bottom: 14px; font-size: 14px;
}
.issue-list { margin: 6px 0 0; padding-left: 18px; font-size: 13.5px; }
.issue-list li { margin-bottom: 5px; }

details.raw { margin-top: 14px; }
details.raw summary { cursor: pointer; color: var(--muted); font-size: 12.5px; font-weight: 600; }
details.raw pre {
  background: #0f172a; color: #e2e8f0; padding: 13px; border-radius: 11px; overflow: auto;
  font-size: 11.5px; max-height: 340px; line-height: 1.5;
}

/* ================= checker ================= */
.tabs { display: flex; gap: 6px; background: var(--bg-soft); padding: 5px; border-radius: 12px; width: max-content; margin-bottom: 18px; }
.tab {
  border: none; background: transparent; color: var(--muted); font: 600 13.5px inherit;
  padding: 8px 16px; border-radius: 9px; cursor: pointer; transition: all .15s ease;
}
.tab.active { background: var(--card); color: var(--text); box-shadow: var(--shadow); }
.tab:hover:not(.active) { color: var(--text); }

.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 13px; margin-bottom: 16px; }
.result-tile {
  background: var(--card-2); border: 1px solid var(--border); border-radius: 13px; padding: 14px 16px;
}
.result-tile .v { font-size: 24px; font-weight: 800; letter-spacing: -.02em; }
.result-tile .k { font-size: 12px; color: var(--muted); font-weight: 600; margin-top: 2px; }

.check-row {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 11px; margin-bottom: 8px; background: var(--card-2);
}
.check-row .ic {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  font-size: 13px; font-weight: 800; flex: none;
}
.check-row.pass .ic { background: var(--green-soft); color: var(--green); }
.check-row.warn .ic { background: var(--amber-soft); color: var(--amber); }
.check-row.fail .ic { background: var(--red-soft); color: var(--red); }
.check-row .txt { flex: 1; min-width: 0; }
.check-row .name { font-weight: 700; font-size: 13.5px; }
.check-row .detail { color: var(--muted); font-size: 12.5px; }

.kw-row { display: grid; grid-template-columns: 140px 56px 1fr; gap: 10px; align-items: center; padding: 6px 0; font-size: 13.5px; }
.kw-row .w { font-weight: 600; overflow: hidden; text-overflow: ellipsis; }
.kw-row .c { color: var(--muted); font-size: 12.5px; text-align: right; }

/* ================= admin ================= */
.admin-grid { display: grid; grid-template-columns: 310px 1fr; gap: 16px; align-items: start; }
@media (max-width: 900px) { .admin-grid { grid-template-columns: 1fr; } }
.bot-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 11px; background: var(--card-2);
}
.bot-toggle .bt-name { font-weight: 700; font-size: 13.5px; }
.bot-toggle .bt-tag { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.log-line { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; padding: 6px 9px; border-radius: 8px; margin-bottom: 5px; background: var(--card-2); border: 1px solid var(--border); display: flex; gap: 10px; }
.log-line .lt { color: var(--muted); flex: none; }
.log-line .lv { font-weight: 700; flex: none; width: 52px; }
.log-line.error .lv { color: var(--red); }
.log-line.warn .lv { color: var(--amber); }
.log-line.info .lv { color: var(--accent); }
.log-line .lm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gate { max-width: 470px; margin: 12vh auto 0; }

/* ================= static pages ================= */
.hero {
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, var(--card)), var(--card));
  border: 1px solid var(--border); border-radius: 22px; padding: 44px 38px; margin-bottom: 22px;
  box-shadow: var(--shadow);
}
.hero h1 { font-size: 34px; max-width: 760px; }
.hero p.lead { color: var(--muted); font-size: 16px; max-width: 700px; margin: 14px 0 22px; }
.hero .cta { display: flex; gap: 10px; flex-wrap: wrap; }

.prose { font-size: 14.5px; }
.prose h2 { margin-top: 26px; }
.prose h3 { margin-top: 18px; }
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 20px; }
.prose code {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 6px;
  padding: 2px 6px; font-size: 12.5px; color: var(--text);
}
.prose pre {
  background: #0f172a; color: #e2e8f0; padding: 15px; border-radius: 12px; overflow: auto;
  font-size: 12.5px; line-height: 1.55;
}
.prose pre code { background: none; border: none; color: inherit; padding: 0; }
details.faq { border: 1px solid var(--border); border-radius: 12px; padding: 13px 16px; margin-bottom: 10px; background: var(--card); }
details.faq summary { cursor: pointer; font-weight: 700; font-size: 14.5px; }
details.faq p { margin: 10px 0 0; font-size: 13.5px; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.feature {
  border: 1px solid var(--border); border-radius: 15px; padding: 18px; background: var(--card);
  box-shadow: var(--shadow); transition: transform .15s ease;
}
.feature:hover { transform: translateY(-3px); }
.feature .fic {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: var(--accent-soft); font-size: 18px; margin-bottom: 11px;
}
.feature h3 { font-size: 15px; }
.feature p { color: var(--muted); font-size: 13.5px; margin: 0; }

/* ================= footer / toast ================= */
.foot {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  color: var(--muted); font-size: 12.5px; margin-top: 26px; padding-top: 16px;
  border-top: 1px solid var(--border);
}
#poll-state { color: var(--green); font-weight: 600; }

.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 100;
  background: #0f172a; color: #fff; padding: 11px 20px; border-radius: 12px; font-size: 13.5px;
  font-weight: 500; box-shadow: var(--shadow-lg); animation: pop .15s ease; max-width: 90vw;
}
.toast.error { background: var(--red); }
.toast.success { background: var(--green); }

/* ================= responsive ================= */
@media (max-width: 680px) {
  body { font-size: 14.5px; }
  .wrap { padding: 16px 13px 50px; }
  .nav { padding: 10px 14px; gap: 10px; }
  .nav-links a { padding: 6px 10px; font-size: 13px; }
  h1 { font-size: 22px; }
  .hero { padding: 28px 22px; }
  .hero h1 { font-size: 26px; }
  .submit-row { flex-direction: column; }
  .submit-row .btn { width: 100%; }
  .stat .num { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}