/* IGAH microsite + sandbox.
   Layout: a single reading column for the site, a two-pane workbench for the sandbox,
   laid over a faint 2:1 tile grid, the one thing every page here is about. */
:root {
  --bg: #eef1f5;
  --surface: #ffffff;
  --sunken: #e3e8ef;
  --ink: #1b2130;
  --muted: #586276;
  --line: #d3d9e3;
  --accent: #b84238;   /* brick red from the IGAH-32 palette */
  --accent-ink: #ffffff;
  --grass: #3f7a30;
  --brass: #9a7a1c;
  --ok: #2f7a3a;
  --bad: #b3261e;
  --grid: rgba(27, 33, 48, 0.045);
  --checker: #c9d1dc;

  --font-display: "Silkscreen", ui-monospace, "Courier New", monospace;
  --font-body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.625rem;
  --step-3: 2.25rem;
  --radius: 6px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161f; --surface: #1a1f2c; --sunken: #0e1219; --ink: #e5e9f1; --muted: #9aa4b8;
    --line: #2a3142; --accent: #e06a4a; --accent-ink: #12161f; --grass: #7fb547; --brass: #f0d060;
    --ok: #6cc47a; --bad: #ff8a80; --grid: rgba(229, 233, 241, 0.04); --checker: #232a39;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12161f; --surface: #1a1f2c; --sunken: #0e1219; --ink: #e5e9f1; --muted: #9aa4b8;
  --line: #2a3142; --accent: #e06a4a; --accent-ink: #12161f; --grass: #7fb547; --brass: #f0d060;
  --ok: #6cc47a; --bad: #ff8a80; --grid: rgba(229, 233, 241, 0.04); --checker: #232a39;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(26.565deg, var(--grid) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(-26.565deg, var(--grid) 0 1px, transparent 1px 32px);
  color: var(--ink);
  font: var(--step-0) / 1.55 var(--font-body);
}
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
h1, h2, h3 { text-wrap: balance; line-height: 1.2; margin: 0; }
code, pre, .mono { font-family: var(--font-mono); font-size: 0.875em; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.pixel { image-rendering: pixelated; image-rendering: crisp-edges; }

.wrap {
  max-width: 68rem;
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* Top bar */
.bar { border-bottom: 1px solid var(--line); background: var(--surface); }
.bar .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.5rem; padding-block: 0.75rem; }
.logo { font-family: var(--font-display); font-size: var(--step-1); color: var(--ink); text-decoration: none; letter-spacing: 0.02em; display: flex; align-items: center; gap: 0.5rem; }
.logo svg { width: 28px; height: 14px; }
.nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; font-size: var(--step--1); }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }

.eyebrow { font-family: var(--font-display); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }

.chip {
  display: inline-flex; align-items: center; gap: 0.35em;
  font: 600 0.75rem / 1 var(--font-body); letter-spacing: 0.02em;
  padding: 0.3em 0.55em; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); background: var(--surface);
  white-space: nowrap;
}
.chip.done { color: var(--ok); border-color: currentColor; }
.chip.now { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }
.chip.next { color: var(--brass); border-color: currentColor; }
.chip.pass { color: var(--ok); }
.chip.fail { color: var(--bad); border-color: currentColor; }

.meter { height: 8px; background: var(--sunken); border-radius: 999px; overflow: hidden; }
.meter > span { display: block; height: 100%; background: var(--grass); }

button, .button, select, input[type="file"]::file-selector-button {
  font: 600 var(--step--1) / 1 var(--font-body);
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); padding: 0.55em 0.8em; cursor: pointer;
}
.button.primary, button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); text-decoration: none; }
button:disabled { opacity: 0.5; cursor: default; }

@media (prefers-reduced-motion: no-preference) {
  .meter > span { transition: width 400ms ease-out; }
}