/* MDViewer website: one stylesheet for the landing page and the articles. */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.1);
  --accent: #0a84ff;
  --accent-text: #0066cc;
  --code-bg: #f2f2f5;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.08), 0 12px 40px rgba(0, 0, 0, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121214;
    --bg-soft: #1c1c1f;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: rgba(255, 255, 255, 0.12);
    --accent-text: #4da3ff;
    --code-bg: #232327;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 12px 40px rgba(0, 0, 0, 0.5);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.55;
}

a {
  color: var(--accent-text);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.12em 0.35em;
  border-radius: 5px;
}

pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

.narrow {
  max-width: 720px;
}

/* ── Header and footer ── */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text);
}

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

.top nav {
  display: flex;
  gap: 18px;
  font-size: 15px;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 80px;
  padding-top: 28px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 14px;
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

/* ── Landing page ── */

.hero {
  text-align: center;
  padding-top: 48px;
  padding-bottom: 24px;
}

.hero .icon {
  width: 112px;
  height: 112px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 16px 0 12px;
}

.hero p.lead {
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--muted);
  max-width: 680px;
  margin: 0 auto 28px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: white;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 999px;
}

.button:hover {
  text-decoration: none;
  filter: brightness(1.08);
}

.brew {
  display: inline-flex;
  max-width: 100%;
  white-space: normal;
  text-align: left;
  align-items: center;
  gap: 8px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  color: var(--text);
  cursor: pointer;
}

.brew:hover {
  border-color: var(--accent);
}

.small {
  font-size: 14px;
  color: var(--muted);
  margin-top: 14px;
}

.shot {
  display: block;
  margin: 40px auto 0;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

section {
  padding: 64px 0 0;
}

section h2 {
  font-size: clamp(26px, 3.6vw, 36px);
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0 0 12px;
}

section > .wrap > p.intro {
  color: var(--muted);
  font-size: 19px;
  max-width: 720px;
  margin: 0 0 28px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

@media (max-width: 760px) {
  .split {
    grid-template-columns: 1fr;
  }

  .top nav .hide-narrow {
    display: none;
  }
}

.split img {
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.articles a {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
}

.articles a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.articles span {
  display: block;
  color: var(--muted);
  font-size: 15px;
  margin-top: 4px;
}

/* ── Articles ── */

article {
  padding-top: 24px;
}

article h1 {
  font-size: clamp(30px, 4.6vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 12px 0 10px;
}

article .meta {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 32px;
}

article h2 {
  font-size: 24px;
  margin: 40px 0 8px;
  letter-spacing: -0.01em;
}

article table {
  border-collapse: collapse;
  width: 100%;
  font-size: 15px;
  margin: 16px 0;
}

article th,
article td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
}

article td.num,
article th.num {
  text-align: right;
}

article .note {
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 15.5px;
}