@layer reset, tokens, base, layout, components, utilities, overrides;

@import url("tokens.css") layer(tokens);

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; }
  body, h1, h2, h3, p, ul, figure { margin: 0; }
  ul { padding: 0; list-style: none; }
  img, svg { display: block; max-width: 100%; }
  button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
  a { color: inherit; }
}

@layer base {
  body {
    background: var(--bg-canvas);
    color: var(--text-base);
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.65;
  }
  h1, h2, h3 { color: var(--text); line-height: 1.2; font-weight: 600; }
  h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
  h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
  code, pre, .mono { font-family: var(--mono); font-size: 0.9em; }
  a { text-decoration-color: var(--accent); text-underline-offset: 3px; }
  a:hover { color: var(--accent); }
  ::selection { background: var(--thread-blue); color: var(--text); }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  }
}

@layer layout {
  .wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }
  section { padding: 72px 0; border-top: 1px solid var(--line-base); }
  section:first-of-type { border-top: 0; }
  .grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
  .grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
  @media (max-width: 767px) {
    section { padding: 48px 0; }
  }
}

@layer components {
  /* sticky nav */
  .nav {
    position: sticky; top: 0; z-index: 10;
    background: color-mix(in srgb, var(--bg-canvas) 88%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line-base);
  }
  .nav-inner { display: flex; align-items: center; gap: 20px; padding: 14px 0; }
  .nav .brand { font-family: var(--accent-mono); color: var(--text); text-decoration: none; font-size: 1.05rem; }
  .nav .links { margin-left: auto; display: flex; gap: 18px; }
  .nav .links a { text-decoration: none; color: var(--muted-base); font-size: 0.95rem; }
  .nav .links a:hover { color: var(--accent); }
  #theme-toggle { color: var(--muted-base); border: 1px solid var(--line-base); border-radius: 6px; padding: 2px 10px; }

  /* hero */
  .hero { padding: 96px 0 72px; }
  .hero .kicker { font-family: var(--accent-mono); color: var(--accent); letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.85rem; }
  .hero h1 { margin: 10px 0 14px; max-width: 16ch; }
  .hero p.lede { max-width: 54ch; color: var(--muted-base); font-size: 1.05rem; }
  .hero .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

  .btn {
    display: inline-block; text-decoration: none;
    font-family: var(--mono); font-size: 0.95rem;
    padding: 10px 18px; border-radius: 8px;
    border: 1px solid var(--line-base);
  }
  .btn-primary { background: var(--accent); color: var(--bg-deep); border-color: var(--accent); }
  .btn-primary:hover { filter: brightness(1.1); }

  /* hero provider tiles (▓░ bars echo the tray tooltip vocabulary) */
  .hero-tiles { margin-top: 40px; }
  .card .tile-pct { color: var(--text); font-family: var(--mono); font-size: 1.6rem; margin: 4px 0 2px; }
  .card .tile-bar { font-family: var(--mono); font-size: 0.85rem; letter-spacing: 1px; margin: 2px 0 8px; }
  .card .tile-bar .tile-fill { color: var(--accent); }
  .card .tile-bar .tile-empty { color: var(--muted-base); }
  .card .tile-sub { font-size: 0.85rem; }

  /* feature + provider cards */
  .card {
    background: var(--panel-base);
    border: 1px solid var(--line-base); border-radius: 12px;
    padding: 20px;
  }
  .card h3 { font-size: 1.05rem; margin-bottom: 8px; }
  .card p { color: var(--muted-base); font-size: 0.95rem; }
  .card .tag { font-family: var(--accent-mono); color: var(--accent); font-size: 0.78rem; letter-spacing: 0.06em; }

  /* terminal frame */
  .term {
    background: var(--terminal-bg); color: var(--terminal-fg);
    border-radius: 12px; border: 1px solid var(--line-base);
    padding: 18px 20px; font-family: var(--mono); font-size: 0.9rem;
    overflow-x: auto;
  }
  .term .prompt { color: var(--accent); }
  .tabs { display: flex; gap: 8px; margin-bottom: 0; flex-wrap: wrap; }
  .tabs button {
    font-family: var(--mono); font-size: 0.85rem;
    border: 1px solid var(--line-base); border-bottom: 0;
    border-radius: 8px 8px 0 0; padding: 8px 14px; color: var(--muted-base);
  }
  .tabs button[aria-selected="true"] { color: var(--terminal-fg); background: var(--terminal-bg); }
  .tab-panel { border-radius: 0 12px 12px 12px; }
  .tab-panel pre { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
  .copy-btn { color: var(--muted-base); border: 1px solid var(--line-base); border-radius: 6px; padding: 3px 10px; font-size: 0.78rem; white-space: nowrap; }
  .copy-btn:hover { color: var(--terminal-fg); }
  .tab-panel .copy-btn { display: block; margin: 0 0 12px auto; }
  .tab-panel .copy-btn[hidden] { display: none; } /* author display beats UA [hidden] — restore it */
  noscript .tab-panel pre { display: block; }

  .honesty li {
    border-left: 3px solid var(--accent-strong); /* decorative use only */
    padding: 6px 0 6px 14px; margin-bottom: 10px; color: var(--muted-base);
  }

  footer.site { padding: 40px 0 60px; border-top: 1px solid var(--line-base); color: var(--muted-base); font-size: 0.9rem; }
  footer.site .mono { color: var(--accent); }
}

@layer utilities {
  .muted { color: var(--muted-base); }
  .mono-accent { font-family: var(--accent-mono); color: var(--accent); }
  .visually-hidden {
    position: absolute; width: 1px; height: 1px; margin: -1px;
    clip: rect(0 0 0 0); clip-path: inset(50%); overflow: hidden; white-space: nowrap;
  }
}

@layer overrides {
  @media (max-width: 767px) {
    .nav .links a:not(.keep) { display: none; }
    .hero { padding: 64px 0 48px; }
  }
}