/* Dark is the default palette; light overrides it via prefers-color-scheme,
   and an explicit data-theme on <html> beats both. */
:root {
  --bg: #0b0d10;
  --panel: #12161b;
  --panel-2: #171c23;
  --line: #232a33;
  --ink: #e7ecf2;
  --ink-soft: #cdd6e0;
  --dim: #8d99a8;
  --accent: #b8ff4f;
  --accent-ink: #0b0d10;
  --accent-glow: rgba(184, 255, 79, .5);
  --accent-wash: rgba(184, 255, 79, .10);
  --accent-ring: rgba(184, 255, 79, .12);
  --pass: #4fd48a;
  --warn: #f0b429;
  --fail: #ff6b5e;
  --fail-ink: #ffb3ab;
  --shadow: none;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #eef1f5;
  --line: #dfe4ea;
  --ink: #10151b;
  --ink-soft: #3c4653;
  --dim: #5f6b7a;
  --accent: #3d7d1f;
  --accent-ink: #ffffff;
  --accent-glow: rgba(61, 125, 31, .35);
  --accent-wash: rgba(61, 125, 31, .07);
  --accent-ring: rgba(61, 125, 31, .16);
  --pass: #17864c;
  --warn: #a76a00;
  --fail: #c62f22;
  --fail-ink: #8d1e14;
  --shadow: 0 1px 2px rgba(16, 21, 27, .05), 0 6px 20px rgba(16, 21, 27, .05);
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --panel-2: #eef1f5;
    --line: #dfe4ea;
    --ink: #10151b;
    --ink-soft: #3c4653;
    --dim: #5f6b7a;
    --accent: #3d7d1f;
    --accent-ink: #ffffff;
    --accent-glow: rgba(61, 125, 31, .35);
    --accent-wash: rgba(61, 125, 31, .07);
    --accent-ring: rgba(61, 125, 31, .16);
    --pass: #17864c;
    --warn: #a76a00;
    --fail: #c62f22;
    --fail-ink: #8d1e14;
    --shadow: 0 1px 2px rgba(16, 21, 27, .05), 0 6px 20px rgba(16, 21, 27, .05);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 ui-sans-serif, system-ui, "Segoe UI", -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background .18s ease, color .18s ease;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.top {
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 320px at 15% -30%, var(--accent-wash), transparent 70%),
    var(--panel);
  padding: 40px 0;
}
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 650; font-size: 19px; letter-spacing: -.01em;
}
.mark {
  width: 13px; height: 13px; border-radius: 3px;
  background: var(--accent);
  box-shadow: 0 0 22px var(--accent-glow);
}
.tagline {
  max-width: 62ch; margin: 16px 0 28px;
  color: var(--dim); font-size: 16px;
}

/* theme toggle */
#theme {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--panel-2); color: var(--dim);
  border: 1px solid var(--line); border-radius: 100px;
  padding: 7px 14px 7px 11px;
  font: 12px var(--mono); cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
#theme:hover { color: var(--ink); border-color: var(--accent); }
#theme svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.7; }
#theme .sun { display: none; }
:root[data-theme="light"] #theme .sun { display: block; }
:root[data-theme="light"] #theme .moon { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) #theme .sun { display: block; }
  :root:not([data-theme="dark"]) #theme .moon { display: none; }
}

#scan-form { display: flex; gap: 10px; max-width: 640px; }
#url {
  flex: 1; min-width: 0;
  padding: 13px 16px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  font: 15px/1 var(--mono);
}
#url::placeholder { color: var(--dim); }
#url:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
#go {
  padding: 13px 26px;
  background: var(--accent); color: var(--accent-ink);
  border: 0; border-radius: 9px;
  font-weight: 650; font-size: 15px; cursor: pointer;
}
#go:hover { filter: brightness(1.08); }
#go:disabled { opacity: .45; cursor: progress; }

.samples { margin-top: 14px; color: var(--dim); font-size: 13px; }
.chip {
  background: transparent; border: 1px solid var(--line); color: var(--dim);
  border-radius: 100px; padding: 4px 12px; margin-right: 6px;
  font: 12px var(--mono); cursor: pointer;
}
.chip:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- status ---------- */
.status {
  margin: 32px 0; padding: 16px 18px;
  border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 8px; background: var(--panel); color: var(--dim);
  font: 14px var(--mono); box-shadow: var(--shadow);
}
.status.error { border-left-color: var(--fail); color: var(--fail-ink); }

/* ---------- intro ---------- */
.intro { padding: 56px 0 20px; }
.intro h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .12em; color: var(--dim); font-weight: 600; }
.grid-3 { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); margin-top: 20px; }
.grid-3 article { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px; box-shadow: var(--shadow); }
.grid-3 h3 { margin: 0 0 8px; font-size: 15px; }
.grid-3 p { margin: 0; color: var(--dim); font-size: 14px; }
code { font: .92em var(--mono); background: var(--panel-2); padding: 1px 5px; border-radius: 4px; color: var(--accent); }

/* ---------- result ---------- */
#result { padding: 40px 0 20px; }

.scorecard {
  display: grid; grid-template-columns: 190px 1fr; gap: 32px; align-items: center;
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 28px;
  box-shadow: var(--shadow);
}
@media (max-width: 700px) { .scorecard { grid-template-columns: 1fr; } }

.dial { position: relative; width: 170px; height: 170px; }
.dial svg { transform: rotate(-90deg); }
.dial .val { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.dial .num { font: 700 42px/1 var(--mono); letter-spacing: -.03em; }
.dial .grade { font: 600 13px var(--mono); color: var(--dim); margin-top: 6px; letter-spacing: .1em; }

.headline h2 { margin: 0 0 4px; font-size: 22px; letter-spacing: -.02em; word-break: break-all; }
.headline .sub { color: var(--dim); font: 13px var(--mono); margin-bottom: 18px; }
.verdict { font-size: 15px; color: var(--ink); max-width: 60ch; }

.cats { display: grid; gap: 12px; margin-top: 20px; }
.cat { display: grid; grid-template-columns: 190px 1fr 44px; gap: 14px; align-items: center; font-size: 14px; }
.cat .bar { height: 7px; background: var(--panel-2); border-radius: 100px; overflow: hidden; }
.cat .bar i { display: block; height: 100%; border-radius: 100px; }
.cat .pct { font: 600 13px var(--mono); text-align: right; }
.cat .name { color: var(--dim); }
@media (max-width: 700px) { .cat { grid-template-columns: 1fr 44px; } .cat .bar { grid-column: 1 / -1; } }

h3.section {
  margin: 44px 0 16px; font-size: 13px; text-transform: uppercase;
  letter-spacing: .12em; color: var(--dim); font-weight: 600;
}

/* priority fixes */
.fixes { display: grid; gap: 10px; }
.fix {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; display: grid; grid-template-columns: 26px 1fr; gap: 12px;
  box-shadow: var(--shadow);
}
.fix .rank { font: 600 13px var(--mono); color: var(--dim); }
.fix h4 { margin: 0 0 4px; font-size: 15px; }
.fix .detail { color: var(--dim); font: 13px var(--mono); margin-bottom: 8px; word-break: break-word; }
.fix .how { margin: 0; font-size: 14px; color: var(--ink-soft); }

/* checks */
.checks { display: grid; gap: 6px; }
.check {
  display: grid; grid-template-columns: 10px 1fr auto; gap: 12px; align-items: baseline;
  padding: 12px 16px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
}
.dot { width: 9px; height: 9px; border-radius: 50%; align-self: center; }
.dot.pass { background: var(--pass); }
.dot.warn { background: var(--warn); }
.dot.fail { background: var(--fail); }
.check .label { font-size: 14px; }
.check .detail { color: var(--dim); font: 12.5px var(--mono); margin-top: 3px; word-break: break-word; }
.check .w { color: var(--dim); font: 11px var(--mono); white-space: nowrap; }

/* crawlers */
.bots { display: grid; gap: 6px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.bot {
  display: grid; grid-template-columns: 10px 1fr auto; gap: 10px; align-items: center;
  padding: 10px 14px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
}
.bot .ua { font: 13px var(--mono); }
.bot .why { color: var(--dim); font-size: 12px; }
.bot .verdict-tag { font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.bot .verdict-tag.ok { color: var(--pass); }
.bot .verdict-tag.no { color: var(--fail); }

.facts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.facts span {
  font: 12px var(--mono); color: var(--dim);
  border: 1px solid var(--line); border-radius: 100px; padding: 4px 12px;
}

/* ---------- closing plan ---------- */
.plan { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.tier {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px; box-shadow: var(--shadow);
}
.tier header { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 4px; }
.tier h4 { margin: 0; font-size: 16px; letter-spacing: -.01em; }
.tier .gain {
  font: 600 12px var(--mono); color: var(--accent);
  border: 1px solid var(--line); border-radius: 100px; padding: 2px 9px; white-space: nowrap;
}
.tier .blurb { color: var(--dim); font-size: 13px; margin: 0 0 14px; }
.tier ol { margin: 0; padding-left: 18px; display: grid; gap: 12px; }
.tier li::marker { color: var(--dim); font: 12px var(--mono); }
.tier li b { display: block; font-size: 14px; font-weight: 600; }
.tier li span { display: block; color: var(--dim); font-size: 13px; margin-top: 2px; }

.notes {
  margin-top: 16px; background: var(--panel); border: 1px solid var(--line);
  border-left: 3px solid var(--accent); border-radius: 12px; padding: 18px 20px;
  box-shadow: var(--shadow);
}
.notes p { margin: 0 0 10px; font-size: 14px; color: var(--ink-soft); }
.notes p:last-child { margin-bottom: 0; }
.notes .keep { color: var(--dim); font: 12.5px var(--mono); }

.foot { padding: 48px 0 64px; color: var(--dim); font-size: 13px; }