/* sscholler.de — landing
   Pure CSS, no build, no JS, no external fonts.
   - Dark, calm, system fonts only.
   - Flex/grid for layout, fully responsive.
   - Honors prefers-reduced-motion and prefers-color-scheme: light.
*/

:root {
  --bg: #0a0a0a;
  --fg: #f2f2f2;
  --muted: #8a8a8a;
  --hairline: #1f1f1f;
  --card: #111;
  --card-hover: #161616;
  --accent: #f2f2f2;
  --radius: 16px;
  --maxw: 980px;
  --pad: clamp(20px, 4vw, 48px);
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

.stage {
  min-height: 100svh;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(48px, 8vh, 96px) var(--pad) 64px;
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 8vh, 80px);
}

/* ---------- Hero ---------- */
.hero { text-align: center; }

.eyebrow {
  margin: 0 0 18px;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 600;
}

.lede {
  margin: 0 auto;
  max-width: 52ch;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 19px);
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 24px;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  transition: background 200ms var(--ease),
              border-color 200ms var(--ease),
              transform 200ms var(--ease);
  will-change: transform;
}

.card:hover,
.card:focus-visible {
  background: var(--card-hover);
  border-color: #2a2a2a;
  transform: translateY(-2px);
  outline: none;
}

.card .icon {
  font-size: 28px;
  line-height: 1;
  color: var(--fg);
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--hairline);
  border-radius: 12px;
  background: #0c0c0c;
}

.card h2 {
  margin: 4px 0 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
}

.cta {
  margin-top: 8px;
  font-size: 13px;
  color: var(--fg);
  opacity: 0.7;
  transition: opacity 200ms var(--ease);
}

.card:hover .cta,
.card:focus-visible .cta { opacity: 1; }

/* ---------- Footer ---------- */
.foot {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: auto;
  padding-top: 32px;
  border-top: 1px solid var(--hairline);
}

.foot p { margin: 4px 0; }
.foot a { color: inherit; border-bottom: 1px solid #2a2a2a; }
.foot a:hover { color: var(--fg); }

.muted { color: var(--muted); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .card,
  .cta { transition: none; }
  .card:hover,
  .card:focus-visible { transform: none; }
}

/* ---------- Optional light scheme ---------- */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --fg: #0a0a0a;
    --muted: #6a6a6a;
    --hairline: #e5e5e5;
    --card: #ffffff;
    --card-hover: #f5f5f5;
  }
  .card .icon { background: #f5f5f5; }
  .foot a { border-color: #d0d0d0; }
}