/* Headline Intelligence — styles
   Design tokens mirror the Connecting Dots design system (design.md):
   OKLCH colour, Raleway + Geist Mono, one accent per view, evidence colours
   reserved for evidence UI only. Light is default; dark inverts ink/paper. */

:root {
  --paper: oklch(0.985 0.003 90);
  --ink: oklch(0.22 0.02 260);
  --dot: oklch(0.55 0.18 262);
  --dot-soft: oklch(0.94 0.04 262);
  --muted: oklch(0.55 0.01 260);
  --line: oklch(0.9 0.005 260);
  --strong: oklch(0.55 0.15 150);
  --mixed: oklch(0.72 0.14 85);
  --weak: oklch(0.55 0.19 25);
  --panel: oklch(1 0 0);

  --font-sans: Raleway, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: oklch(0.16 0.01 260);
    --ink: oklch(0.93 0.01 260);
    --dot: oklch(0.65 0.15 262);
    --dot-soft: oklch(0.28 0.06 262);
    --muted: oklch(0.7 0.01 260);
    --line: oklch(0.3 0.005 260);
    --panel: oklch(0.19 0.01 260);
  }
}

/* 112.5% = 18px base, matching the design system */
html { font-size: 112.5%; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* numerals must align in tables and stats */
.mono, table td.num, .score-value, .stat {
  font-family: var(--font-mono);
  font-feature-settings: "lnum" 1, "tnum" 1;
}

a { color: var(--dot); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--dot);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip {
  position: absolute; left: -9999px;
}
.skip:focus {
  left: 0.5rem; top: 0.5rem; z-index: 60;
  background: var(--dot); color: #fff;
  padding: 0.5rem 0.75rem; border-radius: 6px;
}

/* ---------------------------------------------------------------- layout */
.wrap { max-width: 68rem; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 768px) { .wrap { padding: 0 1.5rem; } }

header.site {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid var(--line);
  background: color-mix(in oklch, var(--paper) 85%, transparent);
  backdrop-filter: blur(12px);
}
header.site nav {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 3.5rem; gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: 0.5rem;
  font-weight: 600; letter-spacing: -0.01em; color: inherit; text-decoration: none;
  white-space: nowrap;
}
.dot {
  display: inline-block; width: 0.625rem; height: 0.625rem;
  border-radius: 999px; background: var(--dot); flex: none;
}

/* Nav stays reachable on phones: a scrollable row rather than a hidden menu.
   Hiding links behind a hamburger would need JS, and the design system's rule
   is that navigation never gates content. */
.navlinks {
  display: flex; gap: 1rem; font-size: 0.85rem; align-items: center;
  overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch;
  margin-left: auto;
}
.navlinks::-webkit-scrollbar { display: none; }
.navlinks a {
  color: inherit; text-decoration: none; opacity: 0.8; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 0.35rem;
  min-height: 2.75rem;                       /* 44px tap target */
}
.navlinks a:hover { opacity: 1; }
@media (min-width: 768px) { .navlinks { gap: 1.25rem; } }
/* the shortest labels only matter on a phone */
.nav-short { display: inline; }
.nav-long { display: none; }
@media (min-width: 560px) {
  .nav-short { display: none; }
  .nav-long { display: inline; }
}

.gh-icon { width: 1.05rem; height: 1.05rem; fill: currentColor; flex: none; }

/* ---------------------------------------------------------------- hero */
.hero { padding: 3rem 0 2rem; }
h1 {
  font-size: clamp(2rem, 4.5vw, 2.6rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.015em;
  margin: 0 0 1rem;
}
/* the design system's TL;DR anchor: dot-soft panel, left rule in dot */
.lede {
  max-width: 62ch; margin: 0;
  font-size: 1.05rem; line-height: 1.7;
  padding: 0.85rem 1rem; border-left: 3px solid var(--dot);
  background: var(--dot-soft); border-radius: 0 8px 8px 0;
}
.hero-stats { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 1.5rem; }
.hero-stats div { font-size: 0.8rem; color: var(--muted); }
.hero-stats b { display: block; font-size: 1.35rem; color: var(--ink); font-weight: 600; }

/* ---------------------------------------------------------------- cards */
section { padding: 1.5rem 0; }
h2 {
  font-size: 1.5rem; font-weight: 650; letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
}
h3 { font-size: 1.1rem; font-weight: 600; margin: 0 0 0.5rem; }

.grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; }
@media (min-width: 900px) { .grid { grid-template-columns: 23rem 1fr; align-items: start; } }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.card > h3:first-child { margin-top: 0; }
.card-label {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); font-weight: 600; margin: 0 0 0.75rem;
}

/* ---------------------------------------------------------------- forms */
label { display: block; font-size: 0.78rem; color: var(--muted); margin: 0.85rem 0 0.35rem; }
input, textarea, select {
  width: 100%; font: inherit; font-size: 0.92rem;
  color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 0.55rem 0.7rem;
}
textarea { min-height: 4.5rem; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--dot); outline-offset: 1px; border-color: var(--dot); }

button {
  font: inherit; font-weight: 600; cursor: pointer;
  border: 0; border-radius: 999px;
  background: var(--dot); color: #fff;
  padding: 0.6rem 1.1rem;
  transition: transform 0.15s ease-out;
}
button:active { transform: scale(0.985); }
button.block { width: 100%; margin-top: 1rem; }
button.ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--line); font-weight: 500;
  padding: 0.4rem 0.85rem; font-size: 0.82rem;
}
/* 44px minimum tap target on touch devices (design.md accessibility rule) */
@media (pointer: coarse) {
  button, .navlinks a { min-height: 2.75rem; }
  button.ghost { padding-inline: 1rem; }
}
button.ghost[aria-pressed="true"] { background: var(--dot-soft); color: var(--dot); border-color: var(--dot); }

/* ---------------------------------------------------------------- score */
.score-head { display: flex; align-items: baseline; gap: 0.6rem; }
.score-value { font-size: 3rem; line-height: 1; font-weight: 600; }
.score-band {
  font-size: 0.72rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 0.15rem 0.55rem; border-radius: 999px;
}
.band-strong { background: color-mix(in oklch, var(--strong) 15%, transparent); color: var(--strong); }
.band-mixed  { background: color-mix(in oklch, var(--mixed) 20%, transparent); color: oklch(0.5 0.12 85); }
.band-weak   { background: color-mix(in oklch, var(--weak) 14%, transparent); color: var(--weak); }

.bar { height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; margin: 0.5rem 0; }
.bar > i { display: block; height: 100%; background: var(--dot); border-radius: 999px; }

.axis { margin-bottom: 0.7rem; }
.axis-top { display: flex; justify-content: space-between; font-size: 0.78rem; }
.axis-top span { color: var(--muted); }
.axis .bar > i.pos { background: var(--strong); }
.axis .bar > i.neg { background: var(--weak); }

.note { font-size: 0.78rem; color: var(--muted); line-height: 1.55; }

/* ---------------------------------------------------------------- flags */
.flag {
  font-size: 0.85rem; padding: 0.55rem 0.75rem; border-radius: 8px;
  border-left: 3px solid var(--line); background: var(--paper);
  margin-bottom: 0.45rem;
}
.flag.good { border-left-color: var(--strong); }
.flag.warn { border-left-color: var(--mixed); }
.flag.bad  { border-left-color: var(--weak); }
.flag b { font-family: var(--font-mono); font-feature-settings: "lnum" 1; }

/* ---------------------------------------------------------------- lists */
.item {
  border: 1px solid var(--line); border-radius: 10px;
  padding: 0.75rem 0.9rem; margin-bottom: 0.6rem; background: var(--paper);
}
.item-title { font-size: 0.98rem; margin-bottom: 0.35rem; }
.item-meta { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; font-size: 0.76rem; color: var(--muted); }

.chip {
  display: inline-block; font-size: 0.72rem; padding: 0.1rem 0.55rem;
  border-radius: 999px; background: var(--dot-soft); color: var(--dot);
  margin: 0.15rem 0.25rem 0.15rem 0;
}
.chip.good { background: color-mix(in oklch, var(--strong) 15%, transparent); color: var(--strong); }
.chip.bad { background: color-mix(in oklch, var(--weak) 14%, transparent); color: var(--weak); }

.tabs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.9rem; }

/* ---------------------------------------------------------------- tables */
/* narrow screens scroll the table rather than the whole page */
.tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 0.5rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 18rem; }
th {
  text-align: left; font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--muted); font-weight: 600;
  padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--line);
}
td { padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--line); }
td.num { text-align: right; }
.pos { color: var(--strong); }
.neg { color: var(--weak); }

pre {
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 0.85rem; font-family: var(--font-mono); font-size: 0.75rem;
  white-space: pre-wrap; max-height: 22rem; overflow: auto; color: var(--ink);
}

/* ---------------------------------------------------------------- prose */
.prose { max-width: 68ch; }
.prose p { margin: 0 0 0.9rem; }
.prose ul { margin: 0 0 0.9rem; padding-left: 1.1rem; }
.prose li { margin-bottom: 0.35rem; }
.prose li::marker { color: var(--dot); }

footer.site {
  border-top: 1px solid var(--line); margin-top: 3rem;
  padding: 2rem 0; font-size: 0.82rem; color: var(--muted);
}
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; }
footer.site a { color: inherit; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}