/* TruthLock marketing site — shared stylesheet */

:root {
  --paper: #f6f7f9;
  --paper-2: #eef0f4;
  --ink: #141821;
  --ink-2: #3a4150;
  --ink-3: #6b7383;
  --rule: #c9cfda;
  --rule-soft: #e2e6ee;
  --accent: #2e3d8f;
  --accent-ink: #ffffff;
  --accent-soft: #e4e8f7;
  --verified: #1e7a4c;
  --supported: #2a6c8a;
  --unconfirmed: #a86d12;
  --contradicted: #ae382b;
  --neutral: #6b7383;
  --code-bg: #eceff5;
  --shadow: 0 1px 2px rgba(20, 24, 33, 0.06), 0 8px 24px rgba(20, 24, 33, 0.06);

  --display: "Newsreader", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.375rem;
  --step-3: 1.75rem;
  --step-4: 2.25rem;
  --step-5: 3.25rem;

  --max: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #12151c;
    --paper-2: #181c25;
    --ink: #e8eaf0;
    --ink-2: #b8bdc9;
    --ink-3: #848b9a;
    --rule: #333a48;
    --rule-soft: #242a36;
    --accent: #8f9de6;
    --accent-ink: #12151c;
    --accent-soft: #232a45;
    --verified: #4fb37f;
    --supported: #5fa6c6;
    --unconfirmed: #d59a3c;
    --contradicted: #e0655a;
    --neutral: #9aa1b0;
    --code-bg: #1c212c;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}
:root[data-theme="dark"] {
  --paper: #12151c;
  --paper-2: #181c25;
  --ink: #e8eaf0;
  --ink-2: #b8bdc9;
  --ink-3: #848b9a;
  --rule: #333a48;
  --rule-soft: #242a36;
  --accent: #8f9de6;
  --accent-ink: #12151c;
  --accent-soft: #232a45;
  --verified: #4fb37f;
  --supported: #5fa6c6;
  --unconfirmed: #d59a3c;
  --contradicted: #e0655a;
  --neutral: #9aa1b0;
  --code-bg: #1c212c;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: var(--step-0);
  line-height: 1.6;
  padding-inline: var(--gutter);
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.012em;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); font-family: var(--body); font-weight: 600; letter-spacing: 0; }
p { margin: 0; }
p + p { margin-top: 1em; }
.lede { font-size: var(--step-1); color: var(--ink-2); max-width: 62ch; }
.measure { max-width: 65ch; }
.eyebrow {
  font-family: var(--body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.mono { font-family: var(--mono); font-size: 0.875em; }
code, pre, kbd {
  font-family: var(--mono);
  font-size: 0.875em;
}
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 3px; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--rule-soft);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.5;
  margin: 0;
}
pre code { background: none; padding: 0; font-size: 0.8125rem; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 0; }

.wrap { max-width: var(--max); margin-inline: auto; }

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--rule);
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 22px; height: 22px;
  display: inline-block;
}
.nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.9375rem;
}
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-color: var(--accent); }
.nav-cta { display: flex; gap: 0.6rem; align-items: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.05rem;
  border-radius: 4px;
  font-family: var(--body);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  cursor: pointer;
  line-height: 1.2;
}
.btn:hover { background: var(--accent-soft); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent); filter: brightness(1.08); }
.btn-quiet { border-color: transparent; color: var(--ink-2); }
.btn-quiet:hover { background: var(--paper-2); }

/* Sections */
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section + .section { border-top: 1px solid var(--rule-soft); }
.section-head { display: grid; gap: 0.75rem; margin-bottom: 2.25rem; max-width: 62ch; }
.section-head .eyebrow { margin-bottom: 0.25rem; }
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.three-col {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem 2.5rem;
}
.four-col {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem 2rem;
}
@media (max-width: 900px) {
  .two-col, .three-col, .four-col { grid-template-columns: 1fr; }
  .four-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .four-col { grid-template-columns: 1fr; }
  h1 { font-size: 2.375rem; }
  h2 { font-size: 1.875rem; }
}

/* Hero */
.hero {
  padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4rem);
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (max-width: 960px) { .hero { grid-template-columns: 1fr; } }
.hero h1 { max-width: 14ch; }
.hero .lede { margin-top: 1.25rem; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 2rem; }
.hero-note { margin-top: 1rem; font-size: var(--step--1); color: var(--ink-3); }

/* Standing record specimen */
.record {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: var(--shadow);
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.5;
  overflow: hidden;
}
.record-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-3);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-wrap: wrap;
}
.record-body { padding: 0.9rem 1rem; display: grid; gap: 0.9rem; }
.record-response {
  color: var(--ink-2);
  font-family: var(--body);
  font-size: 0.9rem;
  border-left: 2px solid var(--rule);
  padding-left: 0.75rem;
}
.claim {
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  gap: 0.5rem 0.6rem;
  align-items: baseline;
}
.claim .n { color: var(--ink-3); }
.claim .text { color: var(--ink); font-family: var(--body); font-size: 0.9rem; }
.claim .verdict {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  align-items: baseline;
}
.grade {
  display: inline-block;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  border: 1px solid currentColor;
  font-size: 0.75rem;
}
.grade-verified { color: var(--verified); }
.grade-supported { color: var(--supported); }
.grade-unconfirmed { color: var(--unconfirmed); }
.grade-contradicted { color: var(--contradicted); }
.grade-na, .grade-refused { color: var(--neutral); }
.reason { color: var(--ink-2); }
.src { color: var(--ink-3); }
.record-foot {
  border-top: 1px solid var(--rule);
  padding: 0.7rem 1rem;
  display: grid;
  gap: 0.25rem;
  color: var(--ink-3);
  font-size: 0.75rem;
}
.record-foot b { color: var(--ink-2); font-weight: 500; }
.record-foot .hash { word-break: break-all; }

/* Reliance strip */
.reliance {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--rule);
  font-size: 0.75rem;
}
.reliance > div { padding: 0.55rem 0.75rem; border-right: 1px solid var(--rule-soft); }
.reliance > div:last-child { border-right: 0; }
.reliance .op { color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.6875rem; display: block; }
.allow { color: var(--verified); font-weight: 600; }
.deny { color: var(--contradicted); font-weight: 600; }
.review { color: var(--unconfirmed); font-weight: 600; }

/* Feature list */
.features { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.feature {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: 1rem 3rem;
  padding-block: 1.75rem;
  border-bottom: 1px solid var(--rule-soft);
}
@media (max-width: 760px) { .feature { grid-template-columns: 1fr; } }
.feature h3 { font-size: var(--step-2); }
.feature p { color: var(--ink-2); max-width: 60ch; }
.feature .tag { display: block; margin-top: 0.35rem; }

/* Pipeline */
.pipeline {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper-2);
}
@media (max-width: 960px) { .pipeline { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 600px) { .pipeline { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.stage {
  padding: 1rem 1rem 1.1rem;
  border-right: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  display: grid;
  gap: 0.35rem;
  align-content: start;
}
.stage .num { font-family: var(--mono); color: var(--ink-3); font-size: 0.75rem; }
.stage .name { font-weight: 600; }
.stage p { font-size: 0.875rem; color: var(--ink-2); }
.stage.new .name::after { content: " ·"; color: var(--accent); }

/* Tables */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--rule-soft);
}
th { font-weight: 600; font-size: 0.8125rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-3); border-bottom: 1px solid var(--rule); }
td:first-child { font-weight: 500; }
tbody tr:last-child td { border-bottom: 1px solid var(--rule); }
.yes { color: var(--verified); font-weight: 600; }
.no { color: var(--ink-3); }
.partial { color: var(--unconfirmed); font-weight: 600; }

/* Cards (used sparingly) */
.plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem; align-items: stretch; }
@media (max-width: 1000px) { .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .plans { grid-template-columns: 1fr; } }
.plan {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.5rem 1.4rem;
  display: grid;
  gap: 1rem;
  align-content: start;
  background: var(--paper);
}
.plan.featured { border-color: var(--accent); box-shadow: var(--shadow); }
.plan h3 { font-size: var(--step-2); }
.price { font-family: var(--display); font-size: 2rem; line-height: 1; }
.price small { font-family: var(--body); font-size: 0.875rem; color: var(--ink-3); }
.plan ul { margin: 0; padding-left: 1.1rem; color: var(--ink-2); font-size: 0.9375rem; display: grid; gap: 0.35rem; }
.plan .btn { justify-self: start; margin-top: auto; }

/* Callout */
.callout {
  border-left: 3px solid var(--accent);
  padding: 0.25rem 0 0.25rem 1.25rem;
  color: var(--ink-2);
  max-width: 62ch;
}

/* Definition list */
.dl { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 0.6rem 1.5rem; font-size: 0.9375rem; }
.dl dt { color: var(--ink-3); font-family: var(--mono); font-size: 0.8125rem; padding-top: 0.15rem; }
.dl dd { margin: 0; color: var(--ink-2); }
@media (max-width: 560px) { .dl { grid-template-columns: 1fr; gap: 0.2rem 0; } .dl dd { margin-bottom: 0.6rem; } }

/* Prose blocks */
.prose { max-width: 65ch; color: var(--ink-2); }
.prose h2, .prose h3 { color: var(--ink); margin-top: 2.25rem; margin-bottom: 0.75rem; }
.prose h2:first-child, .prose h3:first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.25rem; margin: 0.75rem 0; display: grid; gap: 0.35rem; }
.prose strong { color: var(--ink); font-weight: 600; }

/* Forms */
form.contact { display: grid; gap: 1rem; max-width: 36rem; }
.field { display: grid; gap: 0.35rem; }
.field label { font-weight: 600; font-size: 0.9375rem; }
.field input, .field textarea, .field select {
  font: inherit;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
}
.field textarea { min-height: 7rem; resize: vertical; }
.field .hint { font-size: 0.8125rem; color: var(--ink-3); }
.radio-row { display: flex; gap: 1.25rem; flex-wrap: wrap; font-size: 0.9375rem; }
.radio-row label { display: inline-flex; gap: 0.4rem; align-items: center; }

/* CTA band */
.cta-band {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding-block: 3rem;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 2rem;
  align-items: center;
}
@media (max-width: 800px) { .cta-band { grid-template-columns: 1fr; } }
.cta-band h2 { font-size: var(--step-3); }
.cta-band .actions { display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 800px) { .cta-band .actions { justify-content: flex-start; } }

/* Footer */
.site-footer {
  padding-block: 2.5rem 3rem;
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  gap: 2rem;
  font-size: 0.875rem;
  color: var(--ink-3);
}
@media (max-width: 760px) { .site-footer { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.site-footer h4 { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.6rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; }
.site-footer a { color: var(--ink-2); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .colophon { max-width: 36ch; }

/* Page title block */
.page-title { padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 4vw, 2.5rem); display: grid; gap: 1rem; max-width: 70ch; }
.page-title h1 { font-size: var(--step-4); }
@media (min-width: 900px) { .page-title h1 { font-size: 2.75rem; } }

/* Grade legend */
.legend { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.legend-row {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 0.5rem 1.5rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--rule-soft);
  align-items: start;
}
@media (max-width: 600px) { .legend-row { grid-template-columns: 1fr; } }
.legend-row p { color: var(--ink-2); max-width: 60ch; }
.legend-row .codes { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.4rem; }
.legend-row .codes code { font-size: 0.75rem; }

/* Grid of quiet items */
.grid-quiet { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem 2.5rem; }
@media (max-width: 900px) { .grid-quiet { grid-template-columns: 1fr; } }
.grid-quiet h3 { font-size: var(--step-1); font-family: var(--body); font-weight: 600; margin-bottom: 0.4rem; }
.grid-quiet p { color: var(--ink-2); font-size: 0.9375rem; }

@media (prefers-reduced-motion: no-preference) {
  .btn { transition: background-color 120ms ease; }
}