/* ============================================================
   THE HEART IS A DEVICE — instrument layer
   Built on Aleks Filmore "Ink + Paper" tokens (af-tokens.css)
   The heart treated as an instrument: thresholds, alarms,
   settings you learn to read. No therapy. No healing. No fixing.
   ============================================================ */

:root {
  /* Swappable accent — red = danger/live, teal = recovery/quiet.
     Driven by the Tweaks "Accent mode" control. Direct hex (no nested var). */
  --dev-accent:       #FD0009;
  --dev-accent-rgb:   253, 0, 9;
  --dev-accent-soft:  rgba(253, 0, 9, 0.12);
  --dev-accent-line:  rgba(253, 0, 9, 0.55);
  --dev-glow:         0 0 60px rgba(253, 0, 9, 0.18), 0 0 120px rgba(253, 0, 9, 0.10);

  --dev-panel:        rgba(240, 232, 201, 0.025);
  --dev-panel-line:   rgba(240, 232, 201, 0.10);
  --dev-panel-line-2: rgba(240, 232, 201, 0.18);
}

body[data-accent="teal"] {
  --dev-accent:       #2AA87E;
  --dev-accent-rgb:   42, 168, 126;
  --dev-accent-soft:  rgba(42, 168, 126, 0.12);
  --dev-accent-line:  rgba(42, 168, 126, 0.50);
  --dev-glow:         0 0 60px rgba(42, 168, 126, 0.16), 0 0 120px rgba(42, 168, 126, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
html, body {
  margin: 0; padding: 0;
  background: var(--af-black);
  color: var(--af-cream);
  font-family: var(--af-font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
::selection { background: rgba(var(--dev-accent-rgb), 0.30); color: var(--af-cream); }

a { color: inherit; }

/* ── shared layout ───────────────────────────────────────── */
.dev-container { max-width: 1320px; margin: 0 auto; padding: 0 32px; width: 100%; }
.dev-section   { position: relative; padding: 120px 0; }

/* ── eyebrow (mono tracked label) ────────────────────────── */
.dev-eyebrow {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--af-font-mono); font-size: 12px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--dev-accent); margin: 0;
}
.dev-eyebrow .dash { width: 40px; height: 1px; background: var(--dev-accent); display: inline-block; }
.dev-mono {
  font-family: var(--af-font-mono); text-transform: uppercase;
  letter-spacing: 0.14em; font-size: 11px;
}

/* ── grain + scanlines (instrument screen feel) ──────────── */
.dev-grain {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.05; z-index: 1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='300' height='300'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='3'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.dev-scanlines {
  position: absolute; inset: 0; pointer-events: none; z-index: 1; opacity: 0.5;
  background: repeating-linear-gradient(
    to bottom,
    rgba(240,232,201,0.00) 0px,
    rgba(240,232,201,0.00) 2px,
    rgba(0,0,0,0.18) 3px,
    rgba(0,0,0,0.00) 4px
  );
  mix-blend-mode: multiply;
}

/* ── orb blurs ───────────────────────────────────────────── */
.dev-orb {
  position: absolute; border-radius: 50%; filter: blur(70px);
  pointer-events: none; z-index: 0;
}

/* ── instrument panel (the recurring chrome) ─────────────── */
.dev-panel {
  position: relative;
  background: var(--dev-panel);
  border: 1px solid var(--dev-panel-line);
  border-radius: 2px;
}
.dev-panel .corner {
  position: absolute; width: 9px; height: 9px; opacity: 0.6;
  border-color: var(--dev-panel-line-2);
}
.dev-panel .corner.tl { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.dev-panel .corner.tr { top: -1px; right: -1px; border-top: 1px solid; border-right: 1px solid; }
.dev-panel .corner.bl { bottom: -1px; left: -1px; border-bottom: 1px solid; border-left: 1px solid; }
.dev-panel .corner.br { bottom: -1px; right: -1px; border-bottom: 1px solid; border-right: 1px solid; }

/* ── buttons ─────────────────────────────────────────────── */
.dev-btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--af-font-mono); font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase;
  padding: 16px 26px; text-decoration: none; cursor: pointer;
  border: 0; border-radius: 0; appearance: none; -webkit-appearance: none;
  transition: box-shadow .35s var(--af-ease), transform .35s var(--af-ease), background-color .25s, color .25s;
}
.dev-btn--primary { background-color: var(--dev-accent); color: var(--af-black); font-weight: 700; }
.dev-btn--primary:hover { box-shadow: 0 0 36px rgba(var(--dev-accent-rgb), 0.55); transform: translateY(-1px); }
.dev-btn--ghost { background: transparent; color: var(--af-cream); border: 1px solid var(--af-cream-35); }
.dev-btn--ghost:hover { border-color: var(--dev-accent); color: var(--dev-accent); }

/* ── link underline grow ─────────────────────────────────── */
.dev-link {
  position: relative; text-decoration: none; color: var(--af-cream);
  transition: color .25s;
}
.dev-link::after {
  content: ''; position: absolute; left: 0; bottom: -3px; height: 1px; width: 100%;
  background: var(--dev-accent); transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--af-ease-out);
}
.dev-link:hover { color: var(--dev-accent); }
.dev-link:hover::after { transform: scaleX(1); }

/* ── EKG ─────────────────────────────────────────────────── */
.ekg-trace {
  fill: none; stroke: var(--dev-accent); stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round;
  filter: drop-shadow(0 0 6px rgba(var(--dev-accent-rgb), 0.7));
}
.ekg-trace--ghost { stroke: var(--af-cream-10); stroke-width: 1; filter: none; }
.ekg-sweep {
  fill: none; stroke: var(--dev-accent); stroke-width: 2.5; stroke-linecap: round;
  filter: drop-shadow(0 0 10px rgba(var(--dev-accent-rgb), 0.9));
}

/* travelling pulse dot */
@keyframes ekg-travel { to { offset-distance: 100%; } }

/* node */
.ekg-node-ring { animation: node-breathe 3s ease-in-out infinite; trans-origin: center; }
@keyframes node-breathe {
  0%, 100% { opacity: 0.55; r: var(--r0, 18); }
  50%      { opacity: 0.15; r: var(--r1, 30); }
}

/* ── entry animations ────────────────────────────────────── */
@keyframes dev-fade-up { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
@keyframes dev-fade    { from { opacity: 0; } to { opacity: 1; } }
@keyframes dev-pulse   { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.65; transform: scale(1.12); } }
@keyframes dev-flicker { 0%,19%,21%,100% { opacity: 1; } 20% { opacity: 0.4; } 22% { opacity: 0.85; } }
@keyframes dev-scan-y  { from { transform: translateY(-100%); } to { transform: translateY(800%); } }

.reveal { opacity: 0; transform: translateY(26px);
  transition: opacity .7s var(--af-ease-out), transform .7s var(--af-ease-out); }
.reveal.in { opacity: 1; transform: none; }

/* live dot */
.dev-livedot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--dev-accent);
  box-shadow: 0 0 14px rgba(var(--dev-accent-rgb), 0.8);
  animation: dev-pulse 2.4s ease-in-out infinite;
}

/* ── motion off ──────────────────────────────────────────── */
body[data-motion="off"] * { animation: none !important; transition: none !important; }
body[data-motion="off"] .reveal { opacity: 1 !important; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; animation: none !important; }
}

/* ── book cover frame ────────────────────────────────────── */
.dev-cover {
  display: block; width: 100%; aspect-ratio: 2/3; object-fit: cover;
  background: #0b0b0c;
  box-shadow: -16px 24px 60px rgba(0,0,0,0.7), 0 0 40px rgba(var(--dev-accent-rgb), 0.14);
}
.dev-cover--placeholder {
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 22px; position: relative; overflow: hidden;
  background: linear-gradient(155deg, #2a0001 0%, #050505 72%);
}

/* ============================================================
   HERO
   ============================================================ */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden;
  background: radial-gradient(circle at 50% 22%, #16181c 0%, #010300 68%); }
.hero__inner { position: relative; z-index: 2; padding: 100px 32px 64px; }

.hero__status { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 40px; }
.hero__online { display: inline-flex; align-items: center; gap: 10px; font-family: var(--af-font-mono);
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--af-cream-55); }

.hero-h1 { font-family: var(--af-font-display); font-weight: 500; letter-spacing: -0.04em;
  font-size: clamp(2.8rem, 6vw, 5rem); line-height: 0.94; color: var(--af-cream); margin: 0; }
.hero-h1 em { font-style: italic; color: var(--dev-accent); text-shadow: 0 0 50px rgba(var(--dev-accent-rgb), 0.35); }
.hero-sub { font-family: var(--af-font-display); font-style: italic; font-weight: 400;
  font-size: clamp(1.2rem, 2.4vw, 1.7rem); color: var(--af-cream-70); margin: 22px 0 0; max-width: 34ch; }
.hero-sub em { font-style: italic; color: var(--af-cream); }
.hero-triad { font-family: var(--af-font-mono); font-size: 13px; letter-spacing: 0.06em; line-height: 2;
  margin: 30px 0 0; color: var(--af-cream); }
.hero-triad span span, .hero-triad .text-muted { letter-spacing: 0.06em; }

.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 38px; }

/* — horizon layout — */
.hero--horizon .hero__head { max-width: 760px; margin-bottom: 6px; }
.hero__ekg { margin: 4px 0 18px; }
.hero-legend--row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  border-top: 1px solid var(--dev-panel-line); }
.hero-legend--row .node-card { border-left: 1px solid var(--dev-panel-line); }
.hero-legend--row .node-card:first-child { border-left: 0; }

/* node cards (shared) */
.node-card { display: flex; align-items: flex-start; gap: 16px; text-align: left;
  background: transparent; border: 0; cursor: pointer; color: var(--af-cream);
  padding: 22px 22px; transition: background .3s var(--af-ease); width: 100%; font-family: var(--af-font-body); }
.node-card:hover, .node-card.is-active { background: var(--dev-accent-soft); }
.node-card__num { font-family: var(--af-font-display); font-size: 30px; line-height: 1; font-weight: 500;
  color: transparent; -webkit-text-stroke: 1px var(--af-cream-35); flex-shrink: 0; transition: -webkit-text-stroke-color .3s; }
.node-card:hover .node-card__num, .node-card.is-active .node-card__num { -webkit-text-stroke-color: var(--dev-accent); }
.node-card__body { display: flex; flex-direction: column; gap: 5px; }
.node-card__verb { font-family: var(--af-font-display); font-size: 19px; font-weight: 500; letter-spacing: -0.01em; color: var(--af-cream); }
.node-card__kicker { font-family: var(--af-font-mono); font-size: 9.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--dev-accent); }
.node-card__line { font-size: 13px; line-height: 1.5; color: var(--af-cream-55); max-width: 32ch; margin-top: 2px; }
.node-card__arrow { margin-left: auto; color: var(--af-cream-35); font-size: 16px; transition: color .3s, transform .3s; align-self: center; }
.node-card:hover .node-card__arrow, .node-card.is-active .node-card__arrow { color: var(--dev-accent); transform: translateX(4px); }

/* — monitor layout — */
.hero__monitor-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.hero__monitor-left .hero-h1 { font-size: clamp(3rem, 6vw, 5.2rem); }
.hero__screen { padding: 22px 22px 14px; background: linear-gradient(180deg, rgba(240,232,201,0.035), rgba(0,0,0,0.2)); box-shadow: var(--dev-glow); }
.hero__screen-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.hero-legend--stack { display: flex; flex-direction: column; border-top: 1px solid var(--dev-panel-line); margin-top: 10px; }
.hero-legend--stack .node-card { border-bottom: 1px solid var(--dev-panel-line); padding: 16px 8px; }
.hero-legend--stack .node-card:last-child { border-bottom: 0; }
.hero-legend--stack .node-card__num { font-size: 24px; }
.hero-legend--stack .node-card__verb { font-size: 16px; }
.hero-legend--stack .node-card__line { display: none; }

/* — stack layout — */
.hero__head--center { text-align: center; margin: 0 auto; }
.hero__head--center .hero-sub { margin-left: auto; margin-right: auto; }
.hero__ekg--thin { margin: 10px 0 24px; }
.hero-legend--cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.hero-legend--cards .node-card { flex-direction: column; gap: 14px; border: 1px solid var(--dev-panel-line);
  padding: 28px 24px; min-height: 180px; }
.hero-legend--cards .node-card:hover, .hero-legend--cards .node-card.is-active { border-color: var(--dev-accent-line); }
.hero-legend--cards .node-card__num { font-size: 44px; }
.hero-legend--cards .node-card__arrow { margin-left: 0; align-self: flex-start; }

@media (max-width: 860px) {
  .hero__monitor-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-legend--row { grid-template-columns: 1fr; }
  .hero-legend--row .node-card { border-left: 0; border-top: 1px solid var(--dev-panel-line); }
  .hero-legend--row .node-card:first-child { border-top: 0; }
  .hero-legend--cards { grid-template-columns: 1fr; }
}

/* utility */
.dev-rule { height: 1px; background: var(--dev-panel-line); border: 0; margin: 0; }
.text-accent { color: var(--dev-accent); }
.text-muted  { color: var(--af-cream-55); }
.text-dim    { color: var(--af-cream-35); }