/* ==========================================================================
   PULSE V2.1 — compatibility.css · "ION ATMOSPHERE"
   Hardware spec-sheet page: GPU support as a status-chip vendor grid with
   animated capability bars (the dense mono table is gone), CPU feature
   spec, system requirements, companion-app cards, anti-cheat chips, HRDP
   experimental-research block, closing CTA under an aurora band.
   Requires tokens.css + base.css loaded first; viz.js drives the bars +
   hero trace. No inline styles anywhere — CSP style-src 'self'.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Hero — calm TRACE echo (§6.3) under a drifting top aurora
   -------------------------------------------------------------------------- */
.compat-hero h1 { max-width: 15ch; }
.compat-hero .section-sub { max-width: 54ch; }
.compat-hero .trust-strip { margin-top: var(--sp-5); }

.hero-trace { margin-top: var(--sp-8); }
.hero-trace .motif-svg { width: min(100%, 40rem); }
.compat-hero .trace-caption { margin-top: var(--sp-3); }

/* --------------------------------------------------------------------------
   Status chips come from base.css (sentence case, caps diet).
   Page-only variant: experimental research is dashed.
   -------------------------------------------------------------------------- */
.chip-experimental { border-style: dashed; }

/* --------------------------------------------------------------------------
   01 · GPU support — full-bleed telemetry band (the page's one band).
   background-color (not the shorthand) so .hud-corners / textures survive.
   -------------------------------------------------------------------------- */
.matrix-band {
  background-color: var(--surface-1);
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
}

.matrix-panel {
  background-color: var(--surface-2);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  transition: border-color var(--dur-2) ease;
}
.matrix-panel:hover { border-color: var(--line-2); }

.matrix-head {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line-1);
}

/* Vendor grid — chips carry state, bars carry support level, every fact
   stays as real text (the accessible summary lives in the labels). */
.vendor-grid {
  display: grid;
  gap: var(--sp-4);
  padding-block: var(--sp-5);
}
@media (min-width: 56em) {
  .vendor-grid { grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
}

.vendor-card {
  display: flex;
  flex-direction: column;
  background-color: var(--surface-1);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-md);
  padding: var(--sp-5);
  transition: border-color var(--dur-2) ease;
}
.vendor-card:hover { border-color: var(--line-2); }

.vendor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}
.vendor-name { font-size: var(--fs-h4); }
.vendor-range {
  margin-top: var(--sp-1);
  color: var(--text-3);
  font-size: var(--fs-body-sm);
}

.vendor-card .bar-row {
  display: grid;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}
.bar-label {
  font-size: var(--fs-body-sm);
  color: var(--text-2);
}

/* No-JS truth: each bar renders its REAL value without viz.js
   (viz.js re-asserts the same value from data-bar, then animates). */
.bar-val-full { --bar-value: 1; }
.bar-val-half { --bar-value: 0.5; }
.bar-val-none { --bar-value: 0; }

.vendor-api {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-3);
  margin-top: auto;
  padding-top: var(--sp-5);
}
.vendor-api .num {
  color: var(--text-2);
  font-size: var(--fs-body-sm);
}

.matrix-foot {
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line-1);
  color: var(--text-3);
  font-size: var(--fs-body-sm);
  max-width: 78ch;
}

/* --------------------------------------------------------------------------
   Spec cards — shared instrument ledger (CPU, sysreq, anti-cheat, HRDP).
   v2.1 caps diet: rows read in sentence case; mono is reserved for the
   .mono-label head and .num values.
   -------------------------------------------------------------------------- */
.spec-card {
  background-color: var(--surface-1);
  border: 1px solid var(--line-1);
  border-radius: var(--radius-lg);
  padding: var(--sp-5) var(--sp-6);
  transition: border-color var(--dur-2) ease;
}
.spec-card:hover { border-color: var(--line-2); }

.spec-head {
  display: block;
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line-1);
}
.spec-rows { margin: 0; }
.spec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-block: var(--sp-3);
  border-top: 1px solid var(--line-0);
}
.spec-row:first-of-type { border-top: 0; }
.spec-row dt,
.spec-row dd { margin: 0; }
.spec-row dt {
  font-size: var(--fs-body-sm);
  color: var(--text-3);
}
.spec-row dd {
  font-size: var(--fs-body-sm);
  font-weight: 600;
  color: var(--text-1);
  text-align: right;
}
.spec-row dd a { color: var(--text-1); }

.spec-foot {
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line-1);
  color: var(--text-3);
  font-size: var(--fs-body-sm);
}

/* Split sections: the grid gap owns the spacing, not the head margin */
.split .section-head { margin-bottom: 0; }

/* Secondary note under a section sub */
.head-note {
  margin-top: var(--sp-4);
  color: var(--text-3);
  font-size: var(--fs-body-sm);
  max-width: 52ch;
}

/* --------------------------------------------------------------------------
   03 · System requirements — card sits left, head right (DOM stays
   head-first for reading order; grid repositions on wide screens)
   -------------------------------------------------------------------------- */
@media (min-width: 56em) {
  .sysreq-grid .section-head { grid-column: 2; grid-row: 1; }
  .sysreq-grid .sysreq-card  { grid-column: 1; grid-row: 1; }
}

/* --------------------------------------------------------------------------
   04 · Companion apps — two honest integration cards
   -------------------------------------------------------------------------- */
.integration-grid {
  display: grid;
  gap: var(--sp-5);
}
@media (min-width: 56em) {
  .integration-grid { grid-template-columns: 1fr 1fr; }
}
.integration-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  margin-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line-1);
}
.integration-head h3 { font-size: var(--fs-h4); }
.integration-card > p {
  color: var(--text-2);
  font-size: var(--fs-body-sm);
  max-width: 52ch;
}
/* Sentence-case mono meta (caps diet) */
.integration-tag {
  display: block;
  margin-top: var(--sp-4);
  font: 400 var(--fs-micro) / 1.5 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--text-3);
}

/* --------------------------------------------------------------------------
   06 · HRDP — experimental research, dashed and clearly labeled
   -------------------------------------------------------------------------- */
.hrdp-grid { align-items: start; }

.hrdp-disclaimer { border-style: dashed; border-color: var(--line-2); }
.hrdp-disclaimer:hover { border-color: var(--line-3); }
.hrdp-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  margin-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line-1);
}
.hrdp-disclaimer > p + p { margin-top: var(--sp-4); }
.hrdp-disclaimer strong { color: var(--text-1); }

/* Legend rows carry sentences — readable, never bold-right-aligned walls */
.hrdp-legend .spec-row { align-items: center; }
.hrdp-legend .spec-row dd {
  font-weight: 400;
  color: var(--text-2);
  max-width: 26ch;
}

.hrdp-request {
  margin-top: var(--sp-5);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line-1);
}
.hrdp-request h3 { font-size: var(--fs-h4); }
.hrdp-request p {
  margin-top: var(--sp-3);
  color: var(--text-3);
  font-size: var(--fs-body-sm);
  max-width: 44ch;
}
.hrdp-request .btn { margin-top: var(--sp-4); }
.hrdp-hint {
  display: block;
  margin-top: var(--sp-3);
  font: 400 var(--fs-micro) / 1.5 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--text-3);
}

/* --------------------------------------------------------------------------
   Closing — quiet resolution + CTA on the page's one aurora band
   -------------------------------------------------------------------------- */
.closing .container { padding-top: var(--sp-8); }
.closing-line {
  margin-top: var(--sp-4);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: var(--track-tight);
  color: var(--text-1);
  max-width: 26ch;
  text-wrap: balance;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-6);
}
.closing-meta {
  display: block;
  margin-top: var(--sp-5);
}
.closing-links {
  margin-top: var(--sp-4);
  font: 400 var(--fs-body-sm) / 1.8 var(--font-mono);
  letter-spacing: 0.02em;
}
.closing-links a {
  color: var(--text-3);
  text-decoration-color: var(--line-2);
}
.closing-links a:hover { color: var(--text-1); }