/* anti-hall site theme. One accent (verified teal) on a slate base; light mode mirrors it. */
:root {
  --ah-radius: 12px;
  --ah-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 6px 18px rgba(0, 0, 0, 0.1);
  --ah-glow: 0 0 0 1px var(--ah-accent), 0 0 22px var(--ah-accent-soft);
}

[data-md-color-scheme="slate"] {
  --ah-accent: #2dd4bf;
  --ah-accent-soft: rgba(45, 212, 191, 0.22);
  --md-hue: 0;
  --md-default-bg-color: #121212;
  --md-default-fg-color: #ededed;
  --md-default-fg-color--light: #a1a1a1;
  --md-code-bg-color: #181818;
  --md-primary-fg-color: #121212;
  --md-primary-bg-color: #ededed;
  --md-accent-fg-color: #2dd4bf;
  --md-accent-fg-color--transparent: rgba(45, 212, 191, 0.12);
  --md-typeset-a-color: #2dd4bf;
  --ah-card-bg: #171717;
  --ah-card-border: #262626;
}

[data-md-color-scheme="default"] {
  --ah-accent: #0f766e;
  --ah-accent-soft: rgba(15, 118, 110, 0.18);
  --md-primary-fg-color: #f7f9fb;
  --md-primary-bg-color: #17212b;
  --md-accent-fg-color: #0f766e;
  --md-accent-fg-color--transparent: rgba(15, 118, 110, 0.1);
  --md-typeset-a-color: #0f766e;
  --ah-card-bg: #ffffff;
  --ah-card-border: #dbe3ea;
}

/* Header blends into the page; the accent lives in links, icons and focus only. */
.md-header, .md-tabs { box-shadow: none; border-bottom: 1px solid var(--ah-card-border); }
.md-typeset { line-height: 1.7; }
.md-typeset h1, .md-typeset h2 { letter-spacing: -0.01em; }
.md-typeset h2 { margin-top: 2.4em; }

/* Home hero */
.ah-hero { text-align: center; padding: 2.5rem 0 1rem; }
.ah-hero img { width: 84px; height: 84px; }
.ah-hero .ah-tagline { font-size: 1.2rem; margin: 0.5rem auto 1.5rem; max-width: 38rem; }
.ah-hero .md-button { margin: 0.25rem; border-radius: var(--ah-radius); }
.ah-hero .md-button--primary {
  background: var(--ah-accent);
  border-color: var(--ah-accent);
  color: #06201c;
}

/* Feature cards (grid cards from Material, restyled) */
.md-typeset .grid.cards > ul > li,
.md-typeset .grid > .card {
  background: var(--ah-card-bg);
  border: 1px solid var(--ah-card-border);
  border-radius: var(--ah-radius);
  box-shadow: var(--ah-shadow);
  padding: 1.1rem 1.2rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid > .card:hover {
  border-color: var(--ah-accent);
  box-shadow: var(--ah-shadow), var(--ah-glow);
  transform: translateY(-2px);
}
.md-typeset .grid.cards .twemoji,
.md-typeset .grid.cards .lg { color: var(--ah-accent); }
.md-typeset .grid.cards hr { margin: 0.6rem 0; }

/* Admonitions, tabs, code: same radius */
.md-typeset .admonition, .md-typeset details {
  border-radius: var(--ah-radius);
  box-shadow: var(--ah-shadow);
  border-width: 0 0 0 4px;
}
.md-typeset .tabbed-set { border-radius: var(--ah-radius); }
.md-typeset pre > code { border-radius: var(--ah-radius); }
.md-typeset table:not([class]) { border-radius: var(--ah-radius); box-shadow: var(--ah-shadow); }
.md-typeset__table { max-width: 100%; }
.md-typeset table:not([class]) td code { word-break: break-word; }

/* Hook messages: look like real terminal output. Wrap in <div class="ah-term" markdown>. */
.md-typeset .ah-term, .md-typeset .ah-msg { margin: 1.2em 0; }
.md-typeset .ah-term pre, .md-typeset .ah-msg pre { margin: 0; }
.md-typeset .ah-term pre > code, .md-typeset .ah-msg pre > code {
  background: #0c0c0c;
  color: #dcdcdc;
  border: 1px solid #262626;
  border-top: 26px solid #1c1c1c;
  border-radius: var(--ah-radius);
  box-shadow: var(--ah-shadow);
  padding: 0.9rem 1.1rem;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
  position: relative;
}

/* Motion off when asked */
@media (prefers-reduced-motion: reduce) {
  .md-typeset .grid.cards > ul > li, .md-typeset .grid > .card { transition: none; }
  .md-typeset .grid.cards > ul > li:hover, .md-typeset .grid > .card:hover { transform: none; }
}

/* Buttons and headings: the header colour is dark slate, so set these explicitly. */
.md-typeset .md-button { color: var(--ah-accent); border-color: var(--ah-accent); border-radius: var(--ah-radius); }
.md-typeset .md-button:hover { background: var(--ah-accent-soft); color: var(--ah-accent); border-color: var(--ah-accent); }
.md-typeset .md-button--primary, .md-typeset .md-button--primary:hover { background: var(--ah-accent); color: #06201c; }
.md-typeset h1 { color: var(--md-default-fg-color); font-weight: 700; }
.md-typeset h2, .md-typeset h3 { font-weight: 600; }

/* Dark home: a faint teal glow and grid behind the hero, fading into the neutral base. */
.ah-hero { position: relative; }
[data-md-color-scheme="slate"] .ah-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -3rem;
  left: 50%;
  width: min(100vw, 1100px);
  height: 460px;
  transform: translateX(-50%);
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 70% at 50% 0, rgba(45, 212, 191, 0.14), transparent 75%),
    linear-gradient(rgba(45, 212, 191, 0.05) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, rgba(45, 212, 191, 0.05) 1px, transparent 1px) 0 0 / 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 60% 100% at 50% 0, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 100% at 50% 0, #000 30%, transparent 75%);
}