/* ============================================================
   base.css — reset, typography, layout utilities
   Sterling Crest · Dense Terminal Data Desk
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}

/* Scanline overlay — very subtle */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0.18) 3px
  );
  mix-blend-mode: multiply;
  opacity: 0.5;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
img { background: var(--surface-2); }

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

button { font: inherit; color: inherit; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: var(--track-tight);
  color: var(--ink);
  margin: 0 0 var(--s-4);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin: 0 0 var(--s-4); }
ul, ol { margin: 0 0 var(--s-4); padding-left: 1.25em; }
small { font-size: var(--fs-sm); }

:focus-visible {
  outline: var(--focus);
  outline-offset: var(--focus-offset);
  border-radius: 2px;
}

/* ---------- Layout utilities ---------- */
.single-column { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--s-4); }
.container { max-width: var(--maxw-wide); margin-inline: auto; padding-inline: var(--s-4); }
.container-narrow { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--s-4); }

.section { padding-block: var(--s-8); position: relative; z-index: 2; }
.section + .section { border-top: 1px solid var(--rule); }
.section--tight { padding-block: var(--s-7); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--on-accent);
  padding: var(--s-2) var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--track-cap);
  text-transform: uppercase;
  z-index: 1000;
}
.skip-link:focus { left: var(--s-3); top: var(--s-3); }

/* Mono labels / kickers */
.mono, .label, .kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--track-cap);
  text-transform: uppercase;
  color: var(--text-muted);
}
.kicker { color: var(--accent-ink); }
.kicker::before { content: "> "; opacity: 0.7; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: var(--track-cap);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--s-3);
}
.eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  display: inline-block;
}

.lead { font-size: 1.15rem; color: var(--text); line-height: 1.55; }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.ink { color: var(--ink); }

.text-center { text-align: center; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Status blip */
.blip {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-dim);
  animation: blip 2.4s var(--ease) infinite;
  vertical-align: middle;
}
@keyframes blip {
  0% { box-shadow: 0 0 0 0 var(--accent-dim); }
  70% { box-shadow: 0 0 0 8px rgba(124,255,178,0); }
  100% { box-shadow: 0 0 0 0 rgba(124,255,178,0); }
}
@media (prefers-reduced-motion: reduce) { .blip { animation: none; } }