/* Veritell launch page.
   Paper and ink like a case file; the highlighter only ever marks a tell. */

:root {
  --paper: #e9edf1;
  --sheet: #f7f9fb;
  --ink: #15202b;
  --ink-soft: #4a5866;
  --rule: #c9d2db;
  --marker: #f5cf3a;
  --marker-ink: #15202b;
  --holds: #2e6b5e;
  --button-ink: #f7f9fb;
  --code-bg: #15202b;
  --code-ink: #dfe6ec;
  --code-dim: #8fa1b2;

  --serif: Charter, "Iowan Old Style", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --gutter: 16px;
  --measure: 66ch;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #121a22;
    --sheet: #18222c;
    --ink: #e6ecf1;
    --ink-soft: #9fb0bf;
    --rule: #2b3946;
    --marker: #e8c22f;
    --marker-ink: #121a22;
    --holds: #7cc2ae;
    --button-ink: #121a22;
    --code-bg: #0d141a;
    --code-ink: #dfe6ec;
    --code-dim: #7d8f9f;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
}

a { color: inherit; text-underline-offset: 3px; }
a:focus-visible, .button:focus-visible {
  outline: 3px solid var(--marker);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute; left: -9999px; top: 8px;
  background: var(--ink); color: var(--paper); padding: 8px 12px; border-radius: 6px;
}
.skip:focus { left: 8px; }

.top, main, .bottom {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
@media (min-width: 720px) { :root { --gutter: 32px; } }

/* ---- header ---- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-top: 20px; padding-bottom: 20px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none;
  font: 600 22px/1 var(--serif);
  letter-spacing: -0.01em;
}
.brand img { display: block; }
.top nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.top nav a { text-decoration: none; color: var(--ink-soft); }
.top nav a:hover { color: var(--ink); }
.nav-source {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--ink) !important;
  border: 1px solid var(--rule); border-radius: 999px; padding: 5px 12px;
}
.nav-source:hover { border-color: var(--ink-soft); }

/* ---- hero ---- */
.hero {
  display: grid; gap: 40px;
  padding: 40px 0 72px;
}
@media (min-width: 940px) {
  .hero { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: center; gap: 56px; padding-top: 64px; }
}
h1, h2, h3 { font-family: var(--serif); font-weight: 700; letter-spacing: -0.015em; }
h1 {
  font-size: clamp(38px, 5.4vw, 60px);
  line-height: 1.04;
  margin: 0 0 24px;
  max-width: 16ch;
}
.lede { font-size: 19px; color: var(--ink-soft); max-width: 54ch; margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 16px;
  padding: 12px 18px; border-radius: 8px;
  border: 1.5px solid var(--ink); color: var(--ink);
}
.button:hover { background: var(--sheet); }
.button.primary { background: var(--ink); color: var(--button-ink); }
.button.primary:hover { filter: brightness(1.15); }
.license { margin: 22px 0 0; font-size: 14px; color: var(--ink-soft); }

/* The exhibit: one request, cross-examined. */
.exhibit {
  margin: 0;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 22px 22px 18px;
  box-shadow: 0 1px 0 var(--rule), 0 18px 40px -28px rgba(21, 32, 43, 0.45);
}
.exhibit figcaption {
  font: italic 15px/1.4 var(--serif);
  color: var(--ink-soft);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}
.testimony { list-style: none; margin: 0; padding: 0; }
.testimony li {
  display: grid; grid-template-columns: 9.5em 1fr; column-gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--rule);
  font-family: var(--mono); font-size: 14px; line-height: 1.5;
}
.testimony .who { color: var(--ink-soft); }
.testimony .says { color: var(--ink); }
.testimony .why {
  grid-column: 2;
  font: italic 14px/1.45 var(--serif);
  color: var(--ink-soft);
  margin-top: 4px;
}
.testimony mark {
  color: var(--marker-ink);
  background: linear-gradient(100deg, transparent 0 2px, var(--marker) 2px calc(100% - 3px), transparent calc(100% - 3px));
  padding: 1px 4px;
  margin: 0 -4px;
  border-radius: 2px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.testimony .claim .says::after {
  content: "the claim";
  margin-left: 10px;
  font: italic 13px var(--serif);
  color: var(--ink-soft);
}
.verdict { margin: 14px 0 0; font-size: 15px; line-height: 1.5; }
@media (max-width: 520px) {
  .testimony li { grid-template-columns: 1fr; }
  .testimony .why { grid-column: 1; }
  .exhibit { padding: 18px 16px 14px; }
}

/* One moment of motion: the tells are marked in turn on load. */
@media (prefers-reduced-motion: no-preference) {
  .testimony mark {
    background-size: 0% 100%;
    background-repeat: no-repeat;
    animation: mark 0.5s ease-out forwards;
  }
  .testimony li:nth-child(2) mark { animation-delay: 0.5s; }
  .testimony li:nth-child(3) mark { animation-delay: 0.95s; }
  .testimony li:nth-child(4) mark { animation-delay: 1.4s; }
  @keyframes mark { to { background-size: 100% 100%; } }
}

/* ---- sections ---- */
section + section { border-top: 1px solid var(--rule); }
.how, .features, .install, .open, .partners { padding: 64px 0; }
h2 { font-size: clamp(28px, 3.4vw, 38px); line-height: 1.12; margin: 0 0 22px; max-width: 22ch; }
h3 { font-size: 20px; line-height: 1.25; margin: 0 0 10px; }

.how-grid { display: grid; gap: 32px; }
@media (min-width: 900px) { .how-grid { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 56px; } }
.how-lede { margin: 0; font-size: 18px; color: var(--ink-soft); max-width: 46ch; }
.witnesses { margin: 0; display: grid; gap: 22px; }
@media (min-width: 640px) { .witnesses { grid-template-columns: 1fr 1fr; gap: 26px 32px; } }
.witnesses dt { font: 700 18px/1.3 var(--serif); margin-bottom: 4px; }
.witnesses dd { margin: 0; color: var(--ink-soft); font-size: 16px; }

.feature-groups { display: grid; gap: 36px; margin-top: 8px; }
@media (min-width: 760px) { .feature-groups { grid-template-columns: 1fr 1fr; gap: 40px 56px; } }
.group h3 { padding-bottom: 8px; border-bottom: 2px solid var(--ink); display: inline-block; }
.group ul { margin: 6px 0 0; padding: 0; list-style: none; }
.group li {
  position: relative;
  padding: 8px 0 8px 22px;
  border-bottom: 1px solid var(--rule);
  font-size: 16px;
}
.group li::before {
  content: "";
  position: absolute; left: 2px; top: 17px;
  width: 9px; height: 5px;
  border-left: 2px solid var(--holds); border-bottom: 2px solid var(--holds);
  transform: rotate(-45deg);
}
.privacy {
  margin: 40px 0 0; max-width: var(--measure);
  padding: 18px 20px; border-left: 4px solid var(--holds);
  background: var(--sheet); border-radius: 0 6px 6px 0;
}

.install { display: grid; gap: 32px; align-items: start; }
@media (min-width: 900px) { .install { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; } }
.install-copy p { margin: 0 0 18px; color: var(--ink-soft); max-width: 52ch; }
.steps { margin: 0; padding-left: 1.4em; }
.steps li { padding: 4px 0; }
.steps li::marker { font: 700 16px var(--serif); }
code { font-family: var(--mono); font-size: 0.9em; }
.steps code { background: var(--sheet); border: 1px solid var(--rule); padding: 1px 5px; border-radius: 4px; }
.terminal {
  margin: 0; overflow-x: auto;
  background: var(--code-bg); color: var(--code-ink);
  border-radius: 8px; padding: 20px 22px;
  font: 14px/1.7 var(--mono);
}
.terminal code { font-size: inherit; }
.terminal .c { color: var(--code-dim); }

.open-grid { display: grid; gap: 28px; }
@media (min-width: 760px) { .open-grid { grid-template-columns: 1fr 1fr; gap: 56px; } }
.open-grid p { margin: 0; color: var(--ink-soft); max-width: 48ch; }

.partners p { max-width: var(--measure); color: var(--ink-soft); margin: 0 0 26px; }

/* ---- footer ---- */
.bottom {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px;
  padding-top: 28px; padding-bottom: 40px;
  border-top: 1px solid var(--rule);
  font-size: 14px; color: var(--ink-soft);
}
.bottom .brand { font-size: 18px; color: var(--ink); }
.bottom p { margin: 0; flex: 1 1 260px; }
.bottom nav { display: flex; gap: 20px; }

@media (max-width: 600px) {
  .top nav a:not(.nav-source) { display: none; }
  .hero { padding-top: 24px; }
  .how, .features, .install, .open, .partners { padding: 48px 0; }
}