/* Akashic public site — Ring/Sigil brand (system/branding-concept-2026-06-13.md).
   Plain CSS, no framework, no build step, no third-party font/asset requests. */

:root {
  --void: #0A0B0D;
  --slate: #16181D;
  --vellum: #F4F1EA;
  --graphite: #1B1D22;
  --teal: #27C2B6;
  --amber: #F2A93B;
  --cyan: #33C9E8;
  --verdant: #3FBF7F;
  --ember: #E5544B;
  --ash: #6B7280;

  --font-display: Inter, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--void);
  color: #E7E9EC;
}

body {
  font-family: var(--font-display);
  line-height: 1.55;
}

a { color: var(--teal); }
a:hover { color: #6fe0d5; }

code { font-family: var(--font-mono); background: var(--slate); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.92em; }

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #21242b;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: #E7E9EC;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand img { width: 28px; height: 28px; display: block; }

nav.site-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.92rem;
}

nav.site-nav a {
  color: var(--ash);
  text-decoration: none;
}

nav.site-nav a:hover,
nav.site-nav a[aria-current="page"] {
  color: var(--teal);
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.hero {
  max-width: 920px;
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  text-align: center;
}

#ring-stage {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1 / 1;
  margin: 0 auto 1.5rem;
}

#ring-stage canvas,
#ring-stage img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: #F4F6F8;
}

.hero p.tagline {
  color: #C4C8CE;
  font-size: 1.05rem;
  max-width: 42em;
  margin: 0 auto;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}

.pillar {
  background: var(--slate);
  border: 1px solid #21242b;
  border-radius: 10px;
  padding: 1.25rem;
}

.pillar h2 {
  font-size: 0.95rem;
  color: var(--teal);
  margin: 0 0 0.4rem;
}

.pillar p { margin: 0; color: #C4C8CE; font-size: 0.95rem; }

.household {
  border-left: 2px solid var(--amber);
  padding: 0.5rem 0 0.5rem 1rem;
  color: #E7E9EC;
  font-style: italic;
  margin: 2rem 0;
}

.status-note {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ash);
  text-align: center;
  margin-top: 1.5rem;
}

h2 { color: #F4F6F8; font-size: 1.3rem; margin-top: 2.2rem; }
h3 { color: #dfe2e6; font-size: 1.05rem; margin-top: 1.6rem; }

p { color: #C4C8CE; }

ul { color: #C4C8CE; padding-left: 1.2rem; }
li { margin-bottom: 0.4rem; }

form.sign-in-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}

form.sign-in-form input[type="text"] {
  flex: 1;
  min-width: 200px;
  background: var(--slate);
  border: 1px solid #2a2e36;
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  color: #E7E9EC;
  font-family: var(--font-mono);
}

form.sign-in-form button {
  background: var(--teal);
  color: var(--void);
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.1rem;
  font-weight: 600;
  cursor: pointer;
}

form.sign-in-form button:hover { background: #4fd6ca; }

#sign-in-url {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ash);
  word-break: break-all;
}

footer.site-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--ash);
  font-size: 0.85rem;
}

.changelog-entry { margin-bottom: 1.8rem; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Invite landing call to action (join.html#to=…&c=…). */
a.button {
  display: inline-block;
  background: var(--teal);
  color: var(--void);
  border-radius: 8px;
  padding: 0.75rem 1.3rem;
  font-weight: 600;
  text-decoration: none;
  min-height: 44px;
}
a.button:hover { background: #4fd6ca; }