/* Runtrue — site styles. Tokens mirror the app exactly. */

:root {
  --bg:        #14171C;
  --card:      #1E232B;
  --line:      #2A313B;
  --fg:        #ECEFF4;
  --muted:     #ADB6C4;
  --brand:     #6178FF;
  --playhead:  #F5F7FF;

  --tc:      #2DD4BF;
  --conform: #F0A93B;
  --storage: #A78BFA;
  --aspect:  #F2748C;
  --specs:   #6FDC9B;

  --mono: "Azeret Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, sans-serif;

  --measure: 62ch;
  --gutter: clamp(20px, 5vw, 48px);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:    #F3F4F7;
    --card:  #FFFFFF;
    --line:  #E1E5EC;
    --fg:    #14171C;
    --muted: #4A5462;
    --brand: #3D51E3;
    --playhead: #1A1D23;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 2px; }

.wrap { max-width: 900px; margin: 0 auto; padding: 0 var(--gutter); }

/* ---- masthead ---- */
.masthead {
  display: flex; align-items: baseline; gap: 14px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.masthead .name {
  font-family: var(--mono); font-weight: 600; font-size: 14px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg); text-decoration: none;
}
.masthead nav { margin-left: auto; display: flex; gap: 22px; }
.masthead nav a {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em;
  color: var(--muted); text-decoration: none;
}
.masthead nav a:hover { color: var(--fg); }

/* ---- hero ---- */
.hero {
  padding: clamp(48px, 10vw, 96px) 0 clamp(40px, 7vw, 72px);
  display: grid; gap: 34px;
  grid-template-columns: minmax(0,1fr);
  align-items: center;
}
@media (min-width: 720px) {
  .hero { grid-template-columns: 190px minmax(0,1fr); gap: 48px; }
}
.hero .mark { display: block; width: 168px; }
.hero .mark img { width: 100%; height: auto; display: block; }

h1 {
  font-family: var(--sans);
  font-size: clamp(34px, 6vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 16px;
}
.lede { color: var(--muted); font-size: clamp(17px, 2.2vw, 20px); margin: 0; max-width: 44ch; }

/* ---- sections ---- */
section { padding: clamp(40px, 7vw, 72px) 0; border-top: 1px solid var(--line); }
.eyebrow {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 20px;
}
h2 {
  font-size: clamp(23px, 3.4vw, 30px); line-height: 1.2; font-weight: 600;
  letter-spacing: -0.01em; margin: 0 0 18px;
}
h3 { font-size: 18px; font-weight: 600; margin: 32px 0 8px; }
p { max-width: var(--measure); }
p + p { margin-top: 1em; }

/* ---- tool list ---- */
.tools { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.tools li {
  display: grid; grid-template-columns: 26px minmax(0,1fr);
  gap: 16px; align-items: start;
  padding: 18px 0; border-bottom: 1px solid var(--line);
}
.tools li:first-child { border-top: 1px solid var(--line); }
.tools svg { width: 22px; height: 22px; margin-top: 2px; }
.tools b { display: block; font-weight: 600; }
.tools span { color: var(--muted); font-size: 15.5px; }

/* ---- verified note ---- */
.badge {
  display: inline-block; font-family: var(--mono); font-size: 12.5px;
  padding: 3px 11px; border-radius: 999px;
  border: 1px solid var(--specs); color: var(--specs);
  vertical-align: 2px;
}

/* ---- prose pages ---- */
.prose { padding: clamp(40px, 7vw, 72px) 0; }
.prose h1 { font-size: clamp(28px, 4.6vw, 40px); margin-bottom: 10px; }
.prose .updated {
  font-family: var(--mono); font-size: 13px; color: var(--muted);
  margin: 0 0 40px;
}
.prose ul { max-width: var(--measure); padding-left: 1.1em; }
.prose li { margin: 0.45em 0; }

/* ---- footer ---- */
footer {
  border-top: 1px solid var(--line);
  padding: 34px 0 56px;
  display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: baseline;
  font-family: var(--mono); font-size: 13px; color: var(--muted);
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--fg); }
footer .copy { margin-left: auto; }

@media (prefers-reduced-motion: no-preference) {
  .hero .mark { animation: settle 0.5s ease-out both; }
  @keyframes settle {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}