/* ==========================================================================
   base.css — design tokens, reset, typography, layout primitives, a11y
   Primary Directive · primarydirective site
   ========================================================================== */

/* ---- Design tokens ------------------------------------------------------ */

:root {
  color-scheme: dark;

  /* color */
  --bg:          #0a0a0b;
  --bg-raised:   #121214;
  --bg-stripe-a: #121214;
  --bg-stripe-b: #0d0d0f;

  --ink:         #edeae4;                    /* primary text            */
  --ink-soft:    rgba(237, 234, 228, 0.72);  /* body / secondary text   */
  --ink-dim:     rgba(237, 234, 228, 0.60);  /* meta text (large only)  */
  --line:        rgba(237, 234, 228, 0.14);  /* hairline borders        */
  --line-strong: rgba(237, 234, 228, 0.28);

  --accent:        #ef3b12;  /* brand red — large text, fills, borders   */
  --accent-bright: #ff6540;  /* brighter red — small text links          */

  --key-ink: #4e4033;        /* letter color on keycap art               */

  /* type */
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* spacing / layout */
  --wrap-max: 1180px;
  --pad-x: clamp(20px, 4vw, 40px);
  --section-y: clamp(44px, 7vw, 72px);
}

/* ---- Reset --------------------------------------------------------------- */

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1, h2, h3, p, ul, ol, figure {
  margin: 0;
}

ul[class],
ol[class] {
  padding: 0;
  list-style: none;
}

/* ---- Typography ---------------------------------------------------------- */

h1 {
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 600;
}

h3 {
  font-size: 17px;
  font-weight: 600;
}

.muted   { color: var(--ink-soft); }
.dim     { color: var(--ink-dim); }
.accent  { color: var(--accent); }

/* section label, e.g. “[ RELEASE_001 ]” */
.tag {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--accent-bright);
}

.tag--quiet {
  color: var(--ink-dim);
}

/* comment-style asides, e.g. “// one transmission at launch” */
.note {
  font-size: 13px;
  color: var(--ink-dim);
}

/* ---- Links ---------------------------------------------------------------- */

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

a:hover {
  color: var(--accent-bright);
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---- Layout primitives ----------------------------------------------------- */

.wrap {
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.section {
  padding-block: var(--section-y);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 28px;
}

/* two-column split that stacks on small screens */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 820px) {
  .split {
    grid-template-columns: 1fr;
  }
}

/* definition-style spec list: “stores: … / platforms: …” */
.spec {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 18px;
  font-size: 14px;
}

.spec dt {
  color: var(--ink-dim);
}

.spec dd {
  margin: 0;
}

/* ---- Accessibility helpers -------------------------------------------------- */

.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;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 100;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  font-size: 13px;
  transition: top 150ms ease;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
  text-decoration: none;
}