/* Aryolab — static site. Madar's dark cosmic palette. No external requests. */

@font-face {
  font-family: "Plex Arabic";
  src: url("fonts/IBMPlexSansArabic-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Plex Arabic";
  src: url("fonts/IBMPlexSansArabic-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --space: #010204;
  --bg: #0b1020;
  --fg: #f4f7ff;
  --soft: #c0c8e0;
  --muted: #8290b5;
  --card: #131a33;
  --card-2: #1a2342;
  --border: #2a355a;
  --cyan: #4de1ff;
  --teal: #38d8c8;
  --gold: #d8b24a;
  --violet: #7a52ff;
  --radius: 18px;
  --gutter: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  background-image:
    radial-gradient(1200px 600px at 85% -10%, rgba(122, 82, 255, 0.22), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(77, 225, 255, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--space) 100%);
  background-attachment: fixed;
  color: var(--fg);
  font-family: "Plex Arabic", system-ui, "Segoe UI", Tahoma, "Noto Sans Arabic", sans-serif;
  font-size: 17px;
  line-height: 1.85;
}

/* A sparse star field, CSS only. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(244, 247, 255, 0.7), transparent 60%),
    radial-gradient(1px 1px at 72% 12%, rgba(244, 247, 255, 0.5), transparent 60%),
    radial-gradient(1.5px 1.5px at 40% 66%, rgba(244, 247, 255, 0.45), transparent 60%),
    radial-gradient(1px 1px at 88% 52%, rgba(244, 247, 255, 0.6), transparent 60%),
    radial-gradient(1px 1px at 22% 84%, rgba(244, 247, 255, 0.4), transparent 60%),
    radial-gradient(1.5px 1.5px at 58% 34%, rgba(216, 178, 74, 0.5), transparent 60%);
  background-size: 420px 420px;
  opacity: 0.8;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--gutter) 48px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0;
}

.brand {
  color: var(--fg);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  font-size: 18px;
}

.brand span { color: var(--cyan); }

.lang-jump {
  color: var(--soft);
  font-size: 15px;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 14px;
  background: rgba(19, 26, 51, 0.6);
}

.lang-jump:hover, .lang-jump:focus-visible { color: var(--fg); border-color: var(--cyan); }

h1 {
  font-size: clamp(28px, 7vw, 40px);
  line-height: 1.35;
  margin: 24px 0 6px;
}

h2 {
  font-size: 21px;
  line-height: 1.5;
  margin: 36px 0 10px;
  color: var(--fg);
}

h2::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  margin-inline-end: 10px;
  vertical-align: middle;
}

p, li { color: var(--soft); }

strong { color: var(--fg); }

a { color: var(--cyan); text-underline-offset: 3px; }

a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

ul, ol { padding-inline-start: 1.3em; margin: 8px 0 12px; }

/* Arabic text uses Eastern-Arabic numerals, list markers included. */
ol:lang(ar) { list-style-type: arabic-indic; }

li { margin: 6px 0; }

.updated { color: var(--muted); font-size: 15px; margin: 0 0 8px; }

.lead { font-size: 19px; color: var(--soft); }

.card {
  background: linear-gradient(180deg, rgba(26, 35, 66, 0.75), rgba(19, 26, 51, 0.75));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 18px 0;
}

.card.note { border-color: rgba(216, 178, 74, 0.45); }

.card.note strong:first-child { color: var(--gold); }

.links {
  display: grid;
  gap: 12px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.links a {
  display: block;
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(19, 26, 51, 0.75);
  color: var(--fg);
  text-decoration: none;
  font-weight: 700;
}

.links a small { display: block; font-weight: 400; color: var(--muted); font-size: 14px; }

.links a:hover, .links a:focus-visible { border-color: var(--cyan); }

.mail { direction: ltr; unicode-bidi: isolate; white-space: nowrap; }

.divider {
  border: 0;
  height: 1px;
  margin: 56px 0 8px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.en { font-family: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; line-height: 1.7; }

.en h1 { font-size: clamp(26px, 6vw, 34px); }

.foot {
  margin-top: 56px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

.foot a { color: var(--soft); }

code { direction: ltr; unicode-bidi: isolate; font-size: 0.92em; color: var(--fg); }

@media (min-width: 720px) {
  body { font-size: 18px; }
  .links { grid-template-columns: 1fr 1fr; }
}