:root {
  --bg: #0b0f14;
  --bg-elev: #121821;
  --bg-card: #161e2a;
  --border: #243044;
  --text: #e8eef7;
  --muted: #8b9bb4;
  --accent: #5b8cff;
  --accent-2: #3dd6c6;
  --good: #3ecf8e;
  --warn: #f5c542;
  --bad: #ff6b7a;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; min-height: 100vh; font-family: var(--font); color: var(--text); line-height: 1.55;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(91,140,255,.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(61,214,198,.12), transparent 50%),
    var(--bg);
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(1100px, calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: .75rem; font-weight: 700; letter-spacing: -.02em; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center; font-size: .8rem; font-weight: 800; color: #061018;
}
.brand-sub { display: block; font-size: .72rem; font-weight: 500; color: var(--muted); }
.badge-privacy {
  font-size: .75rem; color: var(--accent-2);
  border: 1px solid rgba(61,214,198,.35); background: rgba(61,214,198,.08);
  padding: .35rem .7rem; border-radius: 999px;
}
.hub-link { font-size: .8rem; color: var(--muted); }
.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.35rem); line-height: 1.15; letter-spacing: -.03em; margin: 0 0 .75rem;
}
.hero h1 span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { color: var(--muted); font-size: 1.05rem; max-width: 62ch; margin: 0 0 1.25rem; }
.trust {
  display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.5rem;
}
.trust span {
  font-size: .78rem; color: var(--muted); border: 1px solid var(--border);
  background: var(--bg-elev); padding: .3rem .65rem; border-radius: 999px;
}
.panel-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 1.25rem; align-items: start; }
@media (max-width: 860px) { .panel-grid { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.15rem 1.2rem; box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 .75rem; font-size: 1rem; }
label.field-label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: .4rem; }
textarea.input {
  width: 100%; min-height: 260px; resize: vertical; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  font-family: var(--mono); font-size: .82rem; line-height: 1.45; padding: .85rem; outline: none;
}
textarea.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(91,140,255,.2); }
.toolbar { display: flex; flex-wrap: wrap; gap: .5rem; margin: .75rem 0 .25rem; }
button, .btn {
  appearance: none; border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
  font: inherit; font-size: .85rem; font-weight: 600; padding: .55rem .9rem; border-radius: 10px; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary {
  background: linear-gradient(135deg, var(--accent), #4576e6); border-color: transparent; color: #fff;
}
button.ghost { background: transparent; }
.hint { font-size: .78rem; color: var(--muted); margin-top: .65rem; }
.results-empty { color: var(--muted); font-size: .92rem; padding: 1rem 0; }
.score-head { display: flex; align-items: center; gap: 1.1rem; margin-bottom: 1rem; }
.score-ring {
  --p: 0; width: 92px; height: 92px; border-radius: 50%;
  background: conic-gradient(var(--ring, var(--accent)) calc(var(--p) * 1%), #243044 0);
  display: grid; place-items: center; flex-shrink: 0;
}
.score-ring-inner {
  width: 72px; height: 72px; border-radius: 50%; background: var(--bg-card);
  display: grid; place-items: center; text-align: center;
}
.score-num { font-size: 1.45rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.score-label { font-size: .65rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.score-meta h3 { margin: 0 0 .25rem; font-size: 1.1rem; }
.score-meta p { margin: 0; color: var(--muted); font-size: .88rem; }
.check-list { display: grid; gap: .5rem; max-height: 420px; overflow: auto; }
.check-row {
  display: grid; grid-template-columns: 1fr auto; gap: .25rem .75rem;
  padding: .6rem .7rem; border-radius: 10px; border: 1px solid var(--border); background: var(--bg);
  font-size: .84rem;
}
.check-row .msg { grid-column: 1 / -1; color: var(--muted); font-size: .8rem; }
.sev {
  font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em;
  padding: .15rem .4rem; border-radius: 6px;
}
.sev.pass, .status.pass { color: var(--good); }
.sev.partial, .status.partial { color: var(--warn); }
.sev.fail, .status.fail { color: var(--bad); }
.sev.skip, .status.skip { color: var(--muted); }
.sev-pill.high { background: rgba(255,107,122,.15); color: var(--bad); }
.sev-pill.medium { background: rgba(245,197,66,.15); color: var(--warn); }
.sev-pill.low { background: rgba(91,140,255,.15); color: var(--accent); }
.sev-pill.info { background: rgba(139,155,180,.15); color: var(--muted); }
.actions-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.section { margin: 2.25rem 0; }
.section h2 { font-size: 1.2rem; margin: 0 0 .85rem; }
.howto { display: grid; grid-template-columns: repeat(3, 1fr); gap: .85rem; }
@media (max-width: 700px) { .howto { grid-template-columns: 1fr; } }
.howto .card h3 { margin: 0 0 .35rem; font-size: .95rem; }
.howto .card p { margin: 0; color: var(--muted); font-size: .88rem; }
.step-n {
  display: inline-grid; place-items: center; width: 1.5rem; height: 1.5rem; border-radius: 6px;
  background: rgba(91,140,255,.2); color: var(--accent); font-size: .75rem; font-weight: 800; margin-bottom: .5rem;
}
.preview-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.preview-table th, .preview-table td {
  text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--border);
}
.preview-table th { color: var(--muted); }
.faq details {
  border: 1px solid var(--border); border-radius: 10px; padding: .7rem .9rem; margin-bottom: .5rem; background: var(--bg-card);
}
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: .5rem 0 0; color: var(--muted); font-size: .9rem; }
.site-footer {
  margin: 2.5rem 0 2rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
  color: var(--muted); font-size: .82rem; display: flex; flex-wrap: wrap; gap: .75rem 1.25rem; justify-content: space-between;
}
.hidden { display: none !important; }
.toast {
  position: fixed; bottom: 1.25rem; left: 50%; transform: translateX(-50%) translateY(calc(100% + 1.5rem));
  background: #1c2738; border: 1px solid var(--border); color: var(--text);
  padding: .65rem 1rem; border-radius: 999px; font-size: .85rem; z-index: 50;
  max-width: calc(100vw - 2rem); visibility: hidden; opacity: 0; pointer-events: none;
  transition: transform .25s ease, opacity .25s ease, visibility 0s linear .25s;
}
.toast.show { transform: translateX(-50%) translateY(0); visibility: visible; opacity: 1; transition: transform .25s ease, opacity .25s ease, visibility 0s; }
.toast:empty { display: none; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; }
@media (max-width: 800px) { .hub-grid { grid-template-columns: 1fr; } }
.hub-card h3 { margin: 0 0 .4rem; font-size: 1.05rem; }
.hub-card p { margin: 0 0 .85rem; color: var(--muted); font-size: .9rem; }
.hub-card .open {
  display: inline-block; font-weight: 700; font-size: .88rem; color: #fff;
  background: linear-gradient(135deg, var(--accent), #4576e6); padding: .5rem .9rem; border-radius: 10px; text-decoration: none;
}
.hub-card .open:hover { text-decoration: none; filter: brightness(1.08); }
.file-row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin: .5rem 0; }
input[type="file"] { font-size: .8rem; color: var(--muted); }
table.smell { width: 100%; border-collapse: collapse; font-size: .82rem; margin-top: .75rem; }
table.smell th, table.smell td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--border); }
table.smell th { color: var(--muted); font-weight: 600; }
.chip { display: inline-block; font-size: .72rem; font-weight: 700; padding: .15rem .45rem; border-radius: 6px; }
.chip.high { background: rgba(255,107,122,.15); color: var(--bad); }
.chip.med { background: rgba(245,197,66,.15); color: var(--warn); }
.chip.low { background: rgba(62,207,142,.15); color: var(--good); }
.check-grid { display: grid; gap: .55rem; }
.check-item {
  display: flex; gap: .65rem; align-items: flex-start; padding: .55rem .65rem;
  border: 1px solid var(--border); border-radius: 10px; background: var(--bg); font-size: .88rem;
}
.check-item input { margin-top: .2rem; }
.snippet-box {
  font-family: var(--mono); font-size: .75rem; background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: .75rem; white-space: pre-wrap; max-height: 220px; overflow: auto; margin-top: .5rem;
}

/* Why this exists / How to use it */
ol.howto { list-style: none; margin: 0; padding: 0; }
.why-card p { margin: 0 0 .7rem; color: var(--muted); font-size: .95rem; max-width: 75ch; }
.why-card p:last-child { margin-bottom: 0; }
.why-card strong { color: var(--text); }
.why-line {
  color: var(--muted); font-size: .92rem; max-width: 70ch; margin: 0 0 1.25rem;
  border-left: 3px solid var(--accent-2); padding-left: .75rem;
}
.why-line strong { color: var(--text); }
.jump-links { font-size: .88rem; color: var(--muted); margin: -.5rem 0 1.25rem; }
.howto .card p strong { color: var(--text); }

/* Heuristic label shown on every dev tool page */
.heuristic-label {
  font-size: .9rem; color: var(--muted); background: rgba(245,197,66,.08);
  border: 1px solid rgba(245,197,66,.35); border-radius: 10px; padding: .55rem .75rem; margin: .75rem 0;
}
.heuristic-label strong { color: var(--warn); }
/* Agent Health Checker: grouped results, evidence, mode select, red-team list */
.check-group { font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 1rem 0 .4rem; }
.check-list .check-group:first-child { margin-top: .25rem; }
.evidence { grid-column: 1 / -1; font-size: .82rem; color: var(--muted); margin-top: .35rem; }
.evidence summary { cursor: pointer; color: var(--accent); }
.evidence ul { margin: .35rem 0 0 1.1rem; padding: 0; }
.evidence li { margin: .15rem 0; word-break: break-word; }
select.input.mode-select {
  width: 100%; background: var(--bg-elev); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: .5rem .6rem; font: inherit; margin-bottom: .75rem;
}
textarea.input.kb-input { min-height: 90px; }
.check-names { margin: 0 0 .5rem 1.1rem; padding: 0; color: var(--muted); font-size: .9rem; }
.check-names li { margin: .15rem 0; }
.redteam-list { margin: 0 0 .75rem 1.2rem; padding: 0; font-size: .9rem; }
.redteam-list li { margin: .45rem 0; }
.redteam-list .hint { margin: .1rem 0 0; font-size: .82rem; }
/* Case study page */
.case-body { max-width: 760px; }
.case-body p, .case-body li { color: var(--text); line-height: 1.6; }
.case-body h2 { margin-top: 2rem; }
.case-body figure { margin: 1rem 0; }
.case-body figure img { width: 100%; max-width: 440px; display: block; border: 1px solid var(--border); border-radius: 10px; }
.case-body figcaption { font-size: .82rem; color: var(--muted); margin-top: .35rem; }
.case-body table { width: 100%; border-collapse: collapse; font-size: .88rem; margin: .75rem 0; }
.case-body th, .case-body td { border: 1px solid var(--border); padding: .4rem .5rem; text-align: left; vertical-align: top; }
.case-body th { background: var(--bg-elev); }
.fictional-banner { border: 1px solid rgba(91,140,255,.45); background: rgba(91,140,255,.08); border-radius: 10px; padding: .6rem .8rem; font-size: .92rem; }