/* Northlab field-ledger theme. shadcn semantic tokens first, then world-specific aliases. */
:root {
  --background: 150 14% 91%;
  --foreground: 152 28% 11%;
  --card: 90 18% 96%;
  --card-foreground: 152 28% 11%;
  --popover: 90 18% 96%;
  --popover-foreground: 152 28% 11%;
  --primary: 16 71% 41%;
  --primary-foreground: 90 18% 96%;
  --secondary: 152 28% 16%;
  --secondary-foreground: 90 18% 96%;
  --muted: 150 10% 88%;
  --muted-foreground: 152 8% 39%;
  --accent: 150 10% 88%;
  --accent-foreground: 152 28% 11%;
  --destructive: 0 62% 39%;
  --destructive-foreground: 90 18% 96%;
  --border: 150 8% 78%;
  --input: 150 8% 78%;
  --ring: 16 73% 35%;
  --radius: 0.5rem;

  --bg: #e7ece6;
  --paper: #f4f6f1;
  --ink: #14241c;
  --mute: #5c6b62;
  --pine: #1f5c48;
  --copper: #9a3f18;
  --copper-fill: #b44a1f;
  --line: #c2cbc4;
  --ok: #1b6b45;
  --bad: #a32626;
  --warn: #8a5a12;
  --shadow: 0 10px 24px rgba(20, 36, 28, 0.08), 0 1px 0 rgba(20, 36, 28, 0.04);

  --font-sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-serif: "IBM Plex Serif", "Iowan Old Style", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: light; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.55 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: #e4c4b0; color: var(--ink); }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }
input { caret-color: var(--copper); }
a { color: var(--copper); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
code, kbd {
  font-family: var(--font-mono);
  font-size: 0.9em;
  font-weight: 500;
  background: #e4e9e2;
  padding: 0.05em 0.35em;
  border-radius: 0.2rem;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 20;
  background: var(--ink);
  color: var(--paper);
  padding: 0.45rem 0.7rem;
  text-decoration: none;
}

.wrap { width: min(100% - 2.5rem, 68rem); margin-inline: auto; }
.measure { max-width: 68ch; }

/* Header */
.bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 0 1.05rem;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.brand small {
  display: block;
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--mute);
  letter-spacing: 0;
}
.mark {
  display: block;
  width: 1.7rem;
  height: 1.7rem;
  flex-shrink: 0;
}
.nav { display: flex; gap: 1.15rem; flex-wrap: wrap; }
.nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}
.nav a:hover { color: var(--copper); text-decoration: underline; }

/* Hero */
.hero {
  display: grid;
  gap: 2.4rem;
  padding: clamp(2.2rem, 6vw, 4.4rem) 0 clamp(1.8rem, 4vw, 3rem);
}
@media (min-width: 860px) {
  .hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(20rem, 0.9fr);
    align-items: start;
    gap: 3.5rem;
  }
}
h1, h2, h3 { font-family: var(--font-serif); letter-spacing: -0.03em; font-weight: 600; }
h1 {
  font-size: clamp(2.05rem, 5.4vw, 3.35rem);
  line-height: 1.08;
  margin: 0 0 1.15rem;
  text-wrap: balance;
  max-width: 16ch;
}
.lede {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.12rem, 2.1vw, 1.32rem);
  line-height: 1.45;
  margin: 0;
  max-width: 38em;
  color: var(--ink);
}

/* Form / shadcn-like Field + Button */
.sheet {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.15rem;
  box-shadow: var(--shadow);
}
.sheet h2 {
  font-size: 1.35rem;
  margin: 0 0 0.85rem;
}
.field { display: flex; flex-direction: column; gap: 0.45rem; }
.field-label {
  font-size: 0.88rem;
  font-weight: 500;
}
.field-row { display: flex; flex-direction: column; gap: 0.55rem; }
@media (min-width: 560px) {
  .field-row { flex-direction: row; align-items: stretch; }
  .field-row .input { flex: 1; }
}
.input {
  width: 100%;
  font: 500 1rem/1.2 var(--font-mono);
  padding: 0.85rem 0.9rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) - 2px);
}
.input::placeholder { color: #5c6b62; }
.input:focus { outline: 2px solid var(--copper); outline-offset: 1px; border-color: var(--copper); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font: 600 1rem/1 var(--font-sans);
  letter-spacing: -0.01em;
  padding: 0.9rem 1.15rem;
  background: var(--copper-fill);
  color: var(--paper);
  border: 0;
  border-radius: calc(var(--radius) - 2px);
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 1px 0 rgba(20, 36, 28, 0.18), 0 8px 16px rgba(180, 74, 31, 0.18);
  transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}
.btn:hover { background: #9a3f18; color: var(--paper); }
.btn:active { transform: translateY(1px); box-shadow: 0 1px 0 rgba(20, 36, 28, 0.18); }
.btn:disabled { opacity: 0.65; cursor: wait; transform: none; }
.fine {
  margin: 0.85rem 0 0;
  font-size: 0.84rem;
  line-height: 1.5;
  color: var(--mute);
}
.fine a { color: var(--copper); }
.notice {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--ink);
  padding: 0.7rem 0 0;
  border-top: 1px solid var(--line);
}

/* Report */
.report-slot { padding: 0 0 clamp(2.2rem, 5vw, 3.5rem); }
.report {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
@media (prefers-reduced-motion: no-preference) {
  .report.enter {
    animation: settle 0.45s cubic-bezier(0.16, 1, 0.3, 1) both;
  }
}
@keyframes settle {
  from { opacity: 0; transform: translateY(8px); box-shadow: 0 0 0 transparent; }
  to { opacity: 1; transform: none; box-shadow: var(--shadow); }
}
.report-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: baseline;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--line);
  background: #eef2ec;
}
.report-head strong {
  font: 500 0.95rem/1.4 var(--font-mono);
  word-break: break-all;
}
.report-head time, .report-head .when {
  font-size: 0.88rem;
  color: var(--mute);
}
.report-grid {
  display: grid;
  gap: 0;
}
@media (min-width: 720px) {
  .report-grid { grid-template-columns: 11.5rem 1fr; }
}
.score-cell {
  padding: 1.2rem 1.2rem 1.1rem;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 720px) {
  .score-cell { border-bottom: 0; border-right: 1px solid var(--line); }
}
.score-cell .lbl { font-size: 0.8rem; color: var(--mute); margin: 0 0 0.2rem; }
.score {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 3.4rem;
  line-height: 0.95;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  margin: 0;
}
.score span { font-size: 1.15rem; color: var(--mute); letter-spacing: 0; }
.score.ok { color: var(--ok); }
.score.mid { color: var(--warn); }
.score.low { color: var(--bad); }
.bots { padding: 0.4rem 0; }
.bots p { margin: 0.75rem 1.2rem; }
.bots .k {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.pills { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.pill {
  display: inline-flex;
  align-items: center;
  font: 500 0.8rem/1.2 var(--font-mono);
  padding: 0.22rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}
.pill.bad { background: #f8eceb; border-color: #e3c0bd; color: var(--bad); }
.pill.ok { background: #e7f2eb; border-color: #b9d6c3; color: var(--ok); }
.issues {
  margin: 0;
  padding: 1.1rem 1.2rem 1.3rem 1.2rem;
  border-top: 1px solid var(--line);
}
.issues h3 { font-size: 1.2rem; margin: 0 0 0.7rem; }
.issues ul { margin: 0; padding: 0; list-style: none; }
.issues li { margin: 0 0 0.65rem; padding-left: 0; }
.sev { font-weight: 600; font-size: 0.82rem; letter-spacing: 0.01em; }
.sev-critical, .sev-high { color: var(--bad); }
.sev-medium, .sev-warning { color: var(--warn); }
.sev-low, .sev-info { color: var(--mute); }
.err { color: var(--bad); padding: 1.1rem 1.2rem; margin: 0; }
.pending { padding: 1.1rem 1.2rem; margin: 0; color: var(--mute); }

/* Method */
.method {
  padding: clamp(2.8rem, 6vw, 4.4rem) 0;
  border-top: 1px solid var(--line);
}
.method h2, .faq h2, .article h1 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  line-height: 1.15;
  margin: 0 0 0.5rem;
}
.method-lead { margin: 0 0 1.6rem; color: var(--mute); max-width: 60ch; }
.looks { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.looks li {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}
@media (max-width: 639px) {
  .looks li { grid-template-columns: 1fr; gap: 0.25rem; }
}
.looks li:last-child { border-bottom: 1px solid var(--line); }
.looks h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0;
}
.looks p { margin: 0; max-width: 62ch; }

/* FAQ */
.faq { padding: 0 0 clamp(3rem, 6vw, 4.5rem); }
.faq h2 { margin-bottom: 1.1rem; }
.faq details {
  border-top: 1px solid var(--line);
  max-width: 68ch;
}
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 2.2rem 1rem 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 0.1rem;
  top: 1.25rem;
  width: 0.7rem;
  height: 0.7rem;
  border-right: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: rotate(45deg);
  transition: transform 0.15s ease;
}
.faq details[open] summary::after { transform: rotate(-135deg); top: 1.45rem; }
.faq details p { margin: 0 0 1.05rem; }

/* Article / terms */
.article { padding: clamp(2rem, 5vw, 3.2rem) 0 clamp(3rem, 6vw, 4.5rem); }
.article h1 { max-width: 22ch; margin-bottom: 1.1rem; }
.article h2 {
  font-size: 1.45rem;
  margin: 2.1rem 0 0.6rem;
}
.article h3 {
  font-family: var(--font-sans);
  font-size: 1.02rem;
  letter-spacing: 0;
  margin: 1.4rem 0 0.4rem;
}
.article p, .article li { max-width: 68ch; }
.article p { margin: 0 0 1rem; }
.crumbs { margin: 0 0 1.4rem; font-size: 0.92rem; }
.crumbs a { color: var(--copper); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.model {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 0.8rem 0 1.1rem;
  max-width: 68ch;
}
.cta { margin: 1.6rem 0; }

/* Footer */
footer {
  background: var(--ink);
  color: #d5ddd7;
  padding: 2.2rem 0 2.6rem;
  font-size: 0.92rem;
}
footer a { color: #f0d2c2; }
footer a:hover { color: #fff; }
footer .name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--paper);
  margin: 0 0 0.55rem;
  letter-spacing: -0.02em;
}
footer p { margin: 0 0 0.75rem; max-width: 70ch; }
footer .legal { color: #a8b8ae; font-size: 0.84rem; line-height: 1.5; }

@media (max-width: 700px) {
  .wrap { width: min(100% - 1.75rem, 68rem); }
  h1 { max-width: none; }
}