/* arbiterq.dev — single viewport, no scroll. */

:root {
  --bg: #0f1320;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --faint: #64748b;
  --teal: #22d3ee;
  --teal-dim: #0891b2;

  --display: 'Electrolize', ui-sans-serif, system-ui, sans-serif;
  --prose: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 70% 18%, rgba(34, 211, 238, 0.09), transparent 58%);
  color: var(--text);
  font-family: var(--prose);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 3vh clamp(1.25rem, 5vw, 3rem) 0;
}

.mark {
  width: clamp(84px, 13vh, 124px);
  height: auto;
  filter: drop-shadow(0 0 18px rgba(34, 211, 238, 0.30));
  margin-bottom: clamp(1rem, 3vh, 2rem);
}

h1 {
  margin: 0 0 clamp(0.7rem, 2vh, 1.2rem);
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.9rem, 5.2vw, 3.1rem);
  /* text-indent offsets the trailing space letter-spacing adds, so the
     wordmark stays optically centred. */
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--teal);
  text-shadow: 0 0 22px rgba(34, 211, 238, 0.28);
}

.thesis {
  margin: 0 0 clamp(0.9rem, 2.4vh, 1.5rem);
  font-family: var(--display);
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  line-height: 1.25;
  color: var(--text);
}

.lede {
  margin: 0 0 clamp(1.4rem, 4vh, 2.4rem);
  max-width: 46ch;
  font-size: clamp(0.94rem, 1.5vw, 1.05rem);
  line-height: 1.6;
  color: var(--muted);
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.links a {
  display: inline-block;
  padding: 0.66rem 1.3rem;
  border: 1px solid #2b3a55;
  font-family: var(--mono);
  font-size: 0.84rem;
  letter-spacing: 0.03em;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.links a:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.links .primary {
  border-color: var(--teal-dim);
  background: rgba(8, 145, 178, 0.16);
  color: var(--teal);
}

.links .primary:hover { background: rgba(34, 211, 238, 0.18); }

footer {
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  padding: clamp(1rem, 3vh, 2rem) clamp(1.25rem, 5vw, 3rem);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--faint);
}

footer a { color: var(--faint); text-decoration: none; }
footer a:hover { color: var(--teal); }

/* Short viewports. */
@media (max-height: 560px) {
  .mark { width: clamp(60px, 11vh, 84px); margin-bottom: 0.8rem; }
  .lede { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}