/*  MVM static site theme — ported from the mvm docs (Astro Starlight) design
 *  system: gomicrovm.com / mvm/public/tailwind.css + src/styles/custom.css.
 *
 *  Two layers:
 *    1. Base palette tokens — the only tokens that differ per scheme.
 *       Dark (GitHub-dark heritage) is the default on :root;
 *       [data-theme="light"] and the prefers-color-scheme fallback override
 *       them with GitHub Primer light values.
 *    2. Role tokens — semantic, scheme-invariant, resolved via var() chains.
 *
 *  Components only consume role tokens. No hardcoded hex below the palette
 *  blocks (exception: the macOS terminal-dot colors, which are product
 *  affordances, not theme colors).
 */

:root {
  /* ── Base palette (dark, default) ── */
  --color-page: #010409;
  --color-surface: #0d1117;
  --color-surface-2: #161b22;
  --color-border: #30363d;
  --color-heading: #e6edf3;
  --color-muted: #8b949e;
  --color-accent: #58a6ff;
  --color-accent-hover: #79c0ff;
  --color-accent-low: #0c2d6b;
  --color-accent-high: #c8e1ff;
  --color-accent-2: #39c5cf;
  --color-accent-3: #a371f7;
  --color-green: #3fb950;
  --color-amber: #d29922;
  --color-tooltip: #1c2128;
  --color-dim: #484f58;
  --glow-strength: 22%;

  /* ── Fonts (scheme-invariant) ──
     JetBrains Mono carries every heading — the single biggest lever in
     reading as technical rather than generic-SaaS. Inter carries body
     copy, because mono hurts readability at paragraph length. */
  --font-display: "JetBrains Mono", ui-monospace, monospace;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;

  /* ── Role tokens ── */
  --color-title: var(--color-heading);
  --color-body: var(--color-muted);
  --color-label: var(--color-muted);
  --color-link: var(--color-accent);
  --color-action: var(--color-accent);
  --color-action-hover: var(--color-accent-hover);
  --color-canvas: var(--color-page);
  --color-raised: var(--color-surface);
  --color-raised-2: var(--color-surface-2);
  --color-edge: var(--color-border);
  --color-glass-border: color-mix(in oklab, var(--color-border) 70%, var(--color-heading));
  --color-glow-1: color-mix(in oklab, var(--color-accent) var(--glow-strength), transparent);
  --color-glow-2: color-mix(in oklab, var(--color-accent-2) var(--glow-strength), transparent);
  --color-glow-3: color-mix(in oklab, var(--color-accent-3) var(--glow-strength), transparent);

  color-scheme: light dark;
}

/* ── Light palette (GitHub Primer light) ── */
[data-theme="light"] {
  --color-page: #ffffff;
  --color-surface: #f6f8fa;
  --color-surface-2: #eaeef2;
  --color-border: #d0d7de;
  --color-heading: #1f2328;
  --color-muted: #656d76;
  --color-accent: #0969da;
  --color-accent-hover: #0550ae;
  --color-accent-low: #ddf4ff;
  --color-accent-high: #0a3069;
  --color-accent-2: #1b7c83;
  --color-accent-3: #8250df;
  --color-green: #1a7f37;
  --color-amber: #9a6700;
  --color-tooltip: #f6f8fa;
  --color-dim: #afb8c1;
  --glow-strength: 7%;
}

/* Auto mode + OS prefers light → light palette. The :not([data-theme="dark"])
   guard keeps an explicit Dark choice winning regardless of OS preference. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --color-page: #ffffff;
    --color-surface: #f6f8fa;
    --color-surface-2: #eaeef2;
    --color-border: #d0d7de;
    --color-heading: #1f2328;
    --color-muted: #656d76;
    --color-accent: #0969da;
    --color-accent-hover: #0550ae;
    --color-accent-low: #ddf4ff;
    --color-accent-high: #0a3069;
    --color-accent-2: #1b7c83;
    --color-accent-3: #8250df;
    --color-green: #1a7f37;
    --color-amber: #9a6700;
    --color-tooltip: #f6f8fa;
    --color-dim: #afb8c1;
    --glow-strength: 7%;
  }
}

[data-theme="light"] { color-scheme: light; }
[data-theme="dark"] { color-scheme: dark; }

/* ── Base ── */
* { box-sizing: border-box; }
html { font-size: 17px; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  background: var(--color-canvas);
  color: var(--color-body);
  min-height: 100vh;
}
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: -0.015em;
  color: var(--color-title);
}
a { color: inherit; }

.container { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }
@media (min-width: 640px) { .container { padding: 0 2rem; } }

/* Eyebrow — small mono caps, same treatment as the docs sidebar group
   labels and homepage eyebrows. */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-label);
}
.eyebrow .n { color: var(--color-accent); }

/* ── Header — glass bar ── */
.hdr {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in oklab, var(--color-page) 80%, transparent);
  border-bottom: 1px solid var(--color-glass-border);
}
.hdr-row {
  max-width: 72rem; margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
@media (min-width: 640px) { .hdr-row { padding-inline: 2rem; } }

.brand { display: flex; align-items: baseline; gap: 0.6rem; text-decoration: none; }
.brand .name {
  font-family: var(--font-mono);
  font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand .rev {
  font-family: var(--font-mono);
  font-size: 0.65rem; letter-spacing: 0.1em; color: var(--color-dim);
}

.hdr-actions { display: flex; align-items: center; gap: 0.25rem; }
.hdr-actions .hdr-link {
  padding: 0.4rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-body);
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}
.hdr-actions .hdr-link:hover { color: var(--color-title); background: var(--color-raised); }
.hdr-actions .hdr-link.active { color: var(--color-accent); }

.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem;
  border: none; border-radius: 0.375rem;
  background: transparent; color: var(--color-body); cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.theme-toggle:hover { color: var(--color-title); background: var(--color-raised); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="dark"]) .theme-toggle .icon-moon { display: none; }
}

/* ── Buttons ── */
.btn-primary, .btn-outline, .btn-hdr {
  display: inline-block;
  border-radius: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem; font-weight: 600;
  text-decoration: none; cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn-primary {
  padding: 0.7rem 1.3rem;
  background: var(--color-action); color: var(--color-canvas); border: none;
}
.btn-primary:hover { background: var(--color-action-hover); color: var(--color-canvas); }
.btn-outline {
  padding: calc(0.7rem - 1px) calc(1.3rem - 1px);
  border: 1px solid var(--color-glass-border);
  color: var(--color-title); background: transparent;
}
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); background: var(--color-raised); }
.btn-hdr {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  background: var(--color-action); color: var(--color-canvas); border: none;
}
.btn-hdr:hover { background: var(--color-action-hover); }

/* ── Cards — glass hairline + 0.75rem radius, same surface family as the
   docs GlowCard / tables. ── */
.card {
  border: 1px solid var(--color-glass-border);
  border-radius: 0.75rem;
  background: var(--color-raised);
  transition: border-color 0.2s;
}

/* ── Sections ── */
section.std { border-top: 1px solid var(--color-edge); padding: 3.25rem 0; }
.sec-head { display: flex; flex-direction: column; gap: 0.8rem; margin-bottom: 1.9rem; }
.sec-head h2 { font-size: 1.6rem; font-weight: 600; }

/* ── FAQ ── */
.faq-list { border-top: 1px solid var(--color-edge); }
.faq-item { border-bottom: 1px solid var(--color-edge); }
.faq-item > button {
  width: 100%; text-align: left; padding: 1.15rem 0;
  background: transparent; border: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 1.4rem;
  color: inherit;
}
.faq-q {
  font-family: var(--font-body);
  font-size: 1rem; font-weight: 600; letter-spacing: -0.01em;
  color: var(--color-title);
}
.faq-toggle {
  font-family: var(--font-mono); color: var(--color-accent);
  font-size: 0.8rem; flex-shrink: 0;
}
.faq-toggle .open-mark { display: none; }
.faq-toggle .closed-mark { display: inline; }
.faq-item.open .faq-toggle .open-mark { display: inline; }
.faq-item.open .faq-toggle .closed-mark { display: none; }
.faq-a {
  font-size: 0.9rem; line-height: 1.8; color: var(--color-body);
  padding: 0 0 1.5rem; max-width: 46rem; display: none;
}
.faq-item.open .faq-a { display: block; }

/* ── Forms ── */
.form-card { padding: 1.5rem; }
.form-head {
  font-family: var(--font-mono); font-size: 0.66rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-label); margin-bottom: 1.1rem;
}
.field-label {
  display: block;
  font-family: var(--font-mono); font-size: 0.66rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-label); margin-bottom: 0.45rem;
}
input[type="email"] {
  width: 100%;
  background: var(--color-canvas);
  border: 1px solid var(--color-edge);
  border-radius: 0.5rem;
  color: var(--color-title);
  padding: 0.6rem 0.8rem; margin-bottom: 1.2rem;
  outline: none;
  font-family: var(--font-mono); font-size: 0.82rem;
}
input[type="email"]::placeholder { color: var(--color-dim); }
input[type="email"]:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-accent) 25%, transparent);
}
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0.2rem 0 1.4rem; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; pointer-events: none; }
.chip span {
  display: block; padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-edge); border-radius: 999px;
  font-size: 0.78rem; font-weight: 500;
  color: var(--color-body); cursor: pointer; user-select: none;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.chip span:hover { border-color: var(--color-glass-border); color: var(--color-title); }
.chip input:checked + span {
  background: var(--color-accent); border-color: var(--color-accent);
  color: var(--color-canvas); font-weight: 600;
}
.chip input:focus-visible + span { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.form-foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.form-foot .submit {
  padding: 0.65rem 1.15rem;
  background: var(--color-action); color: var(--color-canvas);
  border: none; border-radius: 0.5rem; cursor: pointer;
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 600;
  transition: background 0.15s;
}
.form-foot .submit:hover { background: var(--color-action-hover); }
.form-foot .note {
  font-family: var(--font-mono); font-size: 0.62rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-dim);
}

/* ── Footer ── */
.ftr { border-top: 1px solid var(--color-edge); }
.ftr-row {
  max-width: 72rem; margin: 0 auto; padding: 1.1rem 1.5rem;
  display: flex; justify-content: space-between; gap: 0.7rem; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.09em; color: var(--color-dim);
}
@media (min-width: 640px) { .ftr-row { padding-inline: 2rem; } }

/* ── Modal ── */
.modal {
  position: fixed; inset: 0; z-index: 200;
  background: color-mix(in oklab, var(--color-page) 75%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: grid; place-items: center; padding: 1.25rem;
}
.modal[hidden] { display: none; }
.modal-card {
  background: var(--color-raised);
  border: 1px solid var(--color-glass-border);
  border-radius: 0.75rem;
  padding: 2rem;
  max-width: 30rem; width: 100%; position: relative;
  box-shadow: 0 24px 60px color-mix(in oklab, var(--color-page) 60%, transparent);
}
.modal-close {
  position: absolute; top: 0.7rem; right: 0.8rem;
  background: transparent; border: none; color: var(--color-body);
  font-family: var(--font-mono); font-size: 0.85rem; cursor: pointer;
  padding: 0.25rem; border-radius: 0.375rem;
}
.modal-close:hover { color: var(--color-accent); }
.modal-card h3 { font-size: 1.3rem; font-weight: 600; margin: 0 0 0.4rem; line-height: 1.2; }
.modal-card .intro, .modal-card .intro-line {
  font-size: 0.85rem; line-height: 1.6; color: var(--color-body); margin: 0 0 1.3rem;
}

/* ── Background blooms — decorative glow, drifting slowly. Held still
   under reduced motion: the tint is fine, the movement is what triggers
   discomfort. ── */
.site-bloom {
  position: absolute; border-radius: 999px; pointer-events: none;
  filter: blur(60px);
  animation: site-bloom-drift 28s ease-in-out infinite alternate;
}
@keyframes site-bloom-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(4rem, -2rem, 0) scale(1.12); }
}
@media (prefers-reduced-motion: reduce) {
  .site-bloom { animation: none; }
}