/* Infinite Logic Studio website: one stylesheet for every page.
   Colours are set once here; the dark-mode block swaps them when the visitor's device is in dark mode. */

:root {
  --navy: #1D3557;
  --blue: #2F6DB5;
  --sky: #A6C8F0;

  --bg: #FFFFFF;
  --bg-soft: #F5F7FA;
  --text: #1D3557;
  --text-soft: #52677F;
  --border: #E4E9F0;
  --accent: var(--blue);
  --on-accent: #FFFFFF;
  --mark-edge: var(--navy);
  --mark-line: var(--blue);
  --grid-line: #E6ECF3;

  --radius: 14px;
  --max: 1080px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F1A2B;
    --bg-soft: #16233A;
    --text: #EEF3F9;
    --text-soft: #A6B8CF;
    --border: #253754;
    --accent: #6FA3E0;
    --on-accent: #0F1A2B;
    --mark-edge: #EEF3F9;
    --mark-line: #6FA3E0;
    --grid-line: #1C2D48;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- The mark: an outlined square with three lines (top bar, footer, apps box) ---------- */

.mark { flex: none; }
.mark .tile { fill: none; stroke: var(--mark-edge); }
.mark .line { stroke: var(--mark-line); stroke-linecap: round; }

/* ---------- Top bar ---------- */

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
  font-size: 17px;
}
.wordmark:hover { text-decoration: none; }
.wordmark .mark { width: 26px; height: 26px; }

.nav { display: flex; gap: 28px; font-size: 15px; }
.nav a { color: var(--text-soft); }
.nav a:hover { color: var(--text); text-decoration: none; }

/* ---------- Hero: text on a faint grid that fades out at the bottom ---------- */

.hero {
  position: relative;
  padding: 104px 0 96px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(to bottom, #000 40%, transparent);
  mask-image: linear-gradient(to bottom, #000 40%, transparent);
  pointer-events: none;
}
.hero .wrap { position: relative; }

.eyebrow {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  max-width: 13em;
  font-size: clamp(38px, 5.6vw, 62px);
  line-height: 1.07;
  letter-spacing: -1.2px;
  font-weight: 700;
}

.lead { margin: 22px 0 34px; max-width: 32em; font-size: 19px; color: var(--text-soft); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 550;
}
.pill.solid { background: var(--accent); color: var(--on-accent); }
.pill.outline { border: 1px solid var(--border); color: var(--text); background: var(--bg); }
.pill.outline:hover { border-color: var(--text-soft); text-decoration: none; }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; opacity: 0.75; }

/* ---------- Sections ---------- */

section { padding: 80px 0; }

h2 { margin: 0 0 12px; font-size: clamp(26px, 3.4vw, 34px); line-height: 1.2; letter-spacing: -0.5px; }
.section-lead { margin: 0 0 40px; max-width: 36em; color: var(--text-soft); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 28px; border-radius: var(--radius); background: var(--bg-soft); }
.card h3 { margin: 18px 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--text-soft); font-size: 16px; }
.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
}
.card .icon svg { width: 22px; height: 22px; stroke: var(--accent); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.coming {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 30px;
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}
.coming p { margin: 0; color: var(--text-soft); }
.coming strong { display: block; color: var(--text); font-size: 19px; margin-bottom: 4px; }
.coming .mark { width: 48px; height: 48px; }

/* ---------- Plain text pages (privacy policy, page not found) ---------- */

.page { padding: 72px 0 88px; }
.page .wrap { max-width: 760px; }
.page h1 { font-size: clamp(32px, 4.4vw, 44px); }
.page h2 { margin-top: 44px; font-size: 24px; }
.page p, .page li { color: var(--text-soft); }
.page .updated { margin: 12px 0 0; font-size: 15px; }
.page .pill { margin-top: 24px; }
.page ul { padding-left: 22px; }
.page li { margin: 6px 0; }
.page h2 + p { margin-top: 0; }
.summary {
  margin: 36px 0 40px;
  padding: 24px 28px;
  border-radius: var(--radius);
  background: var(--bg-soft);
}
.summary h2 { margin: 0 0 8px; font-size: 19px; }
.summary ul { margin: 0; }
.summary li { color: var(--text); }
.nav a[aria-current="page"] { color: var(--text); }

/* ---------- Footer ---------- */

footer { border-top: 1px solid var(--border); padding: 28px 0; font-size: 15px; color: var(--text-soft); }
footer .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer .wordmark { font-size: 15px; font-weight: 500; color: var(--text-soft); }
footer .wordmark .mark { width: 20px; height: 20px; }
footer nav { display: flex; gap: 24px; }
footer nav a { color: var(--text-soft); }

/* ---------- Phones and small tablets ---------- */

@media (max-width: 820px) {
  .hero { padding: 64px 0 56px; }
  .cards { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
}

@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  .nav { gap: 18px; font-size: 14px; }
  .nav .optional { display: none; }
  .wordmark { font-size: 16px; }
  .coming { flex-direction: column; align-items: flex-start; padding: 24px; }
}