/* ═══════════════════════════════════════════════════════════════
   AKAMPIO v2 · System (base + type + buttons + HUD primitives)
   ═══════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; background: var(--ak-basalt); }
body {
  margin: 0;
  background: var(--ak-basalt);
  color: var(--ak-bone);
  font-family: var(--ak-font-display);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01","cv11","tnum";
  overflow-x: hidden;
}
img, svg, canvas { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: transparent; border: 0; color: inherit; }
::selection { background: var(--ak-signal); color: var(--ak-basalt); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container-wide { max-width: var(--container-wide); margin: 0 auto; padding: 0 var(--gutter); }

/* ── Type ────────────────────────────────── */
.h-cover   { font-size: var(--fs-cover); font-weight: 300; letter-spacing: -0.05em; line-height: 0.92; margin: 0; text-wrap: balance; }
.h-hero    { font-size: var(--fs-hero);  font-weight: 300; letter-spacing: -0.042em; line-height: 0.94; margin: 0; text-wrap: balance; }
.h1        { font-size: var(--fs-h1);    font-weight: 300; letter-spacing: -0.036em; line-height: 1.00; margin: 0; text-wrap: balance; }
.h2        { font-size: var(--fs-h2);    font-weight: 400; letter-spacing: -0.028em; line-height: 1.06; margin: 0; text-wrap: balance; }
.h3        { font-size: var(--fs-h3);    font-weight: 500; letter-spacing: -0.017em; line-height: 1.2;  margin: 0; }
.lead      { font-size: clamp(17px, 1.35vw, 20px); font-weight: 400; color: var(--ak-bone-3); line-height: 1.5; max-width: 62ch; text-wrap: pretty; margin: 0; }
em.sig     { font-style: normal; color: var(--ak-signal); }
em.ember   { font-style: normal; color: var(--ak-ember); }
em.dim     { font-style: normal; color: var(--ak-hud-2); }

/* ── HUD primitives ─────────────────────── */
.hud-mono {
  font-family: var(--ak-font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ak-hud-2);
}
.hud-micro {
  font-family: var(--ak-font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ak-hud-2);
}
.hud-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--ak-hairline-hi);
  border-radius: 999px;
  font-family: var(--ak-font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ak-hud);
  background: rgba(14,15,18,0.5);
  backdrop-filter: blur(6px);
}
.hud-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ak-signal); box-shadow: 0 0 8px var(--ak-signal-dim); }
.hud-tag .dot.pulse { animation: hudPulse 1.6s ease-in-out infinite; }
@keyframes hudPulse { 0%,100% { opacity: 0.35; } 50% { opacity: 1; } }

.hud-tick {
  color: var(--ak-hud-2);
  font-family: var(--ak-font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.15em;
}
.brackets {
  position: absolute;
  color: var(--ak-hud);
  font-family: var(--ak-font-mono);
  font-size: 20px;
  pointer-events: none;
  line-height: 1;
}
.brackets.tl { top: 12px; left: 12px; }
.brackets.tr { top: 12px; right: 12px; }
.brackets.bl { bottom: 12px; left: 12px; }
.brackets.br { bottom: 12px; right: 12px; }

/* ── Buttons ───────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-family: var(--ak-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: background .18s, color .18s, border-color .18s, transform .18s;
  white-space: nowrap;
  cursor: pointer;
}
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  background: var(--ak-signal);
  color: var(--ak-basalt);
  border-color: var(--ak-signal);
}
.btn-primary:hover {
  background: var(--ak-signal-hi);
  border-color: var(--ak-signal-hi);
  box-shadow: var(--ak-signal-glow);
}
.btn-secondary {
  background: transparent;
  color: var(--ak-bone);
  border-color: var(--ak-hairline-hi);
}
.btn-secondary:hover { border-color: var(--ak-bone); background: rgba(241,238,232,0.05); }
.btn-ghost {
  padding: 8px 0;
  border: 0;
  color: var(--ak-bone);
  background: transparent;
  position: relative;
}
.btn-ghost::after {
  content: ""; display: block; height: 1px; width: 24px; background: currentColor; transition: width .2s;
  margin-top: 6px;
}
.btn-ghost:hover::after { width: 48px; }

/* ── Focus ─────────────────────────────── */
:focus-visible { outline: 2px solid var(--ak-signal); outline-offset: 3px; border-radius: 2px; }
.skip-link { position: absolute; left: -9999px; top: 8px; background: var(--ak-signal); color: var(--ak-basalt); padding: 12px 16px; border-radius: 4px; z-index: 100; }
.skip-link:focus { left: 8px; }

/* ── Sections ─────────────────────────── */
section { position: relative; }
.sec { padding: clamp(80px, 10vw, 160px) 0; }
.sec-bone { background: var(--ak-bone); color: var(--ak-basalt); }
.sec-bone .lead { color: rgba(14,15,18,0.66); }
.sec-bone .hud-mono, .sec-bone .hud-micro { color: rgba(14,15,18,0.55); }
.sec-bone em.sig { color: var(--ak-signal); }

/* ── Reveal ─────────────────────────── */
html.js .reveal { opacity: 0.001; transform: translateY(16px); transition: opacity .45s ease-out, transform .55s cubic-bezier(.25,.8,.25,1); }
html.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

/* ── Scene canvas wrapper ─────────────── */
.scene {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  background: var(--ak-basalt-hi);
  border: 1px solid var(--ak-hairline);
  overflow: hidden;
  border-radius: 2px;
}
.scene canvas { display: block; width: 100%; height: 100%; }
.scene::before,
.scene::after {
  content: "";
  position: absolute;
  pointer-events: none;
}
.scene::before {
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 calc(50% - .5px), var(--ak-hairline) calc(50% - .5px) calc(50% + .5px), transparent calc(50% + .5px)) 0 0 / 100% 100%,
    linear-gradient(0deg, transparent 0 calc(50% - .5px), var(--ak-hairline) calc(50% - .5px) calc(50% + .5px), transparent calc(50% + .5px)) 0 0 / 100% 100%;
  opacity: 0.35;
}
.scene::after {
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 60%, var(--ak-basalt) 100%);
}
.scene .brackets { z-index: 3; }
.scene .hud-tick { position: absolute; z-index: 3; }
.scene .hud-tick.tl { top: 40px; left: 16px; }
.scene .hud-tick.tr { top: 40px; right: 16px; }
.scene .hud-tick.bl { bottom: 40px; left: 16px; }
.scene .hud-tick.br { bottom: 40px; right: 16px; }

@media (max-width: 700px) {
  .scene .hud-tick {
    max-width: calc(100% - 32px);
    white-space: normal;
  }
  .scene .hud-tick.tl { top: 20px; left: 14px; }
  .scene .hud-tick.tr { top: 20px; right: 14px; text-align: right; }
  .scene .hud-tick.bl { bottom: 20px; left: 14px; }
  .scene .hud-tick.br { bottom: 20px; right: 14px; text-align: right; }
}

/* Scene overlays (use-case pills, action buttons) */
.scene-overlay {
  position: absolute;
  z-index: 4;
  padding: 16px;
  pointer-events: auto;
}
.scene-overlay.tl { top: 12px; left: 12px; }
.scene-overlay.tr { top: 12px; right: 12px; }
.scene-overlay.bl { bottom: 12px; left: 12px; }
.scene-overlay.br { bottom: 12px; right: 12px; }
.scene-overlay.tc { top: 16px; left: 50%; transform: translateX(-50%); }
.scene-overlay.bc { bottom: 16px; left: 50%; transform: translateX(-50%); }

.chip-row {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.chip {
  padding: 8px 12px;
  border: 1px solid var(--ak-hairline-hi);
  border-radius: 999px;
  background: rgba(14,15,18,0.68);
  backdrop-filter: blur(8px);
  color: var(--ak-hud);
  font-family: var(--ak-font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color .18s, border-color .18s, background .18s;
}
.chip:hover { color: var(--ak-signal); border-color: var(--ak-signal); }
.chip.on { color: var(--ak-basalt); background: var(--ak-signal); border-color: var(--ak-signal); }

.big-toggle {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 12px 18px 12px 14px;
  border: 1px solid var(--ak-signal);
  border-radius: 4px;
  background: rgba(91,140,255,0.08);
  color: var(--ak-signal);
  font-family: var(--ak-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.big-toggle:hover { background: var(--ak-signal); color: var(--ak-basalt); }
.big-toggle .power {
  width: 14px; height: 14px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  position: relative;
}
.big-toggle .power::before {
  content: ""; position: absolute; left: 50%; top: -2px;
  width: 1.5px; height: 6px; background: currentColor; transform: translateX(-50%);
}
.big-toggle.on { background: var(--ak-signal); color: var(--ak-basalt); }
.big-toggle.on .power::after {
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  animation: ripple 1.6s ease-out infinite;
  border: 1px solid currentColor; opacity: 0;
}
@keyframes ripple { 0% { transform: scale(0.8); opacity: 0.9; } 100% { transform: scale(1.6); opacity: 0; } }

/* ── Grid raster background overlay (subtle) ─── */
.raster {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(0deg, var(--ak-hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--ak-hairline) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ── Utility classes ─────────────── */
.eyebrow-wrap { display: inline-flex; align-items: center; gap: 12px; }
.eyebrow-wrap::before { content: ""; width: 24px; height: 1px; background: var(--ak-hud-2); }
.dot-sig { width: 6px; height: 6px; border-radius: 50%; background: var(--ak-signal); box-shadow: 0 0 6px var(--ak-signal-dim); display: inline-block; }

.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
@media (max-width: 800px) { .grid-12 { gap: 12px; } }