/* Oblongato website. Colours come from the app icon (Atomy): night sky, moon lavender, face ink. */
:root {
  --bg: #F6F4FB;
  --surface: #FFFFFF;
  --ink: #1A1142;
  --sub: #5E5880;
  --faint: #8D88A8;
  --line: rgba(26, 17, 66, 0.10);
  --accent: #6A52C2;
  --accent-soft: #ECE6FA;
  --sky-1: #2A1E66;
  --sky-2: #140F3C;
  --sky-3: #05061A;
  --moon: #DCCFF7;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B0A1C;
    --surface: #15132B;
    --ink: #F1EDFC;
    --sub: #B3ABD3;
    --faint: #7F799F;
    --line: rgba(220, 207, 247, 0.12);
    --accent: #B9A6F2;
    --accent-soft: #221D45;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { padding: 20px 0; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.site-header nav { display: flex; gap: 18px; font-size: 15px; }
.site-header nav a { color: var(--sub); }
.site-header nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

/* Landing hero */
.hero {
  background: radial-gradient(ellipse at 30% 0%, #4A36A0 0%, var(--sky-1) 35%, var(--sky-2) 70%, var(--sky-3) 100%);
  color: #F4EFFF;
  border-radius: 28px;
  margin: 8px 0 0;
  padding: 64px 28px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 28% 68%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 72% 18%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 86% 54%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 58% 82%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 92% 86%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 8% 80%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 42% 12%, #fff 50%, transparent 51%);
  opacity: 0.7;
  pointer-events: none;
}
.hero > * { position: relative; }
.hero img { width: 128px; height: 128px; border-radius: 29px; box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45); }
.hero h1 { font-size: clamp(36px, 7vw, 52px); line-height: 1.08; letter-spacing: -0.025em; margin: 26px 0 10px; }
.hero p.tagline { font-size: clamp(18px, 3.2vw, 21px); color: var(--moon); max-width: 30ch; margin: 0 auto; line-height: 1.45; }
.badge {
  display: inline-block;
  margin-top: 26px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(220, 207, 247, 0.14);
  border: 1px solid rgba(220, 207, 247, 0.28);
  font-size: 15px;
  font-weight: 600;
  color: #F4EFFF;
}

/* Highlights */
.highlights { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 40px 0 0; padding: 0; list-style: none; }
.highlights li { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 18px 18px 16px; }
.highlights h3 { margin: 0 0 4px; font-size: 17px; letter-spacing: -0.01em; }
.highlights p { margin: 0; color: var(--sub); font-size: 15px; line-height: 1.5; }
.lede { font-size: 19px; color: var(--sub); text-align: center; max-width: 34ch; margin: 44px auto 0; line-height: 1.5; }

/* Document pages */
.doc { padding-top: 24px; padding-bottom: 8px; }
.doc h1 { font-size: clamp(32px, 6vw, 42px); letter-spacing: -0.02em; line-height: 1.1; margin: 16px 0 6px; }
.doc .updated { color: var(--faint); font-size: 15px; margin: 0 0 28px; }
.doc h2 { font-size: 21px; letter-spacing: -0.01em; margin: 40px 0 8px; line-height: 1.3; }
.doc h3 { font-size: 17px; margin: 24px 0 4px; }
.doc p, .doc li { color: var(--ink); max-width: 68ch; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc .summary { background: var(--accent-soft); border-radius: 16px; padding: 16px 20px; margin: 0 0 8px; }
.doc .summary p { margin: 6px 0; }
.doc .summary ul { margin: 8px 0; }
.doc table { border-collapse: collapse; width: 100%; font-size: 15px; margin: 12px 0; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); }
.doc th { color: var(--sub); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
.table-scroll { overflow-x: auto; }

/* Support */
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 22px; margin: 8px 0 12px; }
.contact-card p { margin: 4px 0; }
.contact-card .email { font-size: 21px; font-weight: 600; }
details { border-bottom: 1px solid var(--line); padding: 14px 0; }
details summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; color: var(--faint); font-weight: 400; font-size: 20px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 8px 0 2px; color: var(--sub); }

/* Footer */
.site-footer { margin-top: 64px; padding: 28px 0 40px; border-top: 1px solid var(--line); color: var(--faint); font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.site-footer nav { display: flex; gap: 18px; }
.site-footer a { color: var(--sub); }

.todo { background: #FFE08A; color: #1A1142; padding: 0 4px; border-radius: 4px; }

@media (max-width: 520px) {
  .highlights { grid-template-columns: minmax(0, 1fr); }
  .site-header nav { gap: 14px; font-size: 14px; }
  .hero { padding: 48px 20px 44px; border-radius: 22px; }
  .hero img { width: 104px; height: 104px; border-radius: 24px; }
}