/* ============================================================
   components.css — reusable UI atoms & molecules
   ============================================================ */

/* ---- Buttons ---------------------------------------------- */
.btn {
  --btn-bg: var(--gold);
  --btn-fg: var(--text-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  cursor: pointer;
  position: relative;
  isolation: isolate;
  transition: transform var(--dur-fast) var(--ease-spring),
              box-shadow var(--dur) var(--ease-out-expo),
              filter var(--dur-fast) ease;
}
.btn::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  background: radial-gradient(120% 180% at 50% -40%, oklch(100% 0 0 / 0.35), transparent 60%);
  opacity: 0; transition: opacity var(--dur) ease; z-index: -1;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn:hover::after { opacity: 1; }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled {
  opacity: 0.4;
  filter: grayscale(0.5);
  cursor: not-allowed;
  pointer-events: none;
}

.btn--primary { --btn-bg: var(--grad-gold); }
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  border-color: var(--hairline-2);
  backdrop-filter: blur(var(--blur));
}
.btn--ghost:hover { border-color: var(--gold); box-shadow: none; }
.btn--lg { padding: 1.15rem 2rem; font-size: var(--text-base); }
.btn .arrow { transition: transform var(--dur) var(--ease-out-expo); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---- Chips ------------------------------------------------ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.95rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline-2);
  background: var(--glass);
  color: var(--text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out-expo),
              border-color var(--dur-fast) var(--ease-out-expo),
              background var(--dur-fast) var(--ease-out-expo),
              transform var(--dur-fast) var(--ease-out-expo);
  backdrop-filter: blur(var(--blur));
}
.chip:hover { color: var(--text); border-color: var(--gold-deep); transform: translateY(-1px); }
.chip[aria-pressed="true"], .chip.is-active {
  color: var(--text-ink);
  background: var(--grad-gold);
  border-color: transparent;
  font-weight: 600;
}

/* ---- Badges (the honesty system) -------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.32rem 0.7rem;
  border-radius: var(--r-pill);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border: 1px solid transparent;
}
.badge::before {
  content: "";
  width: 7px; height: 7px; border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}
.badge--verified {
  color: var(--verified);
  background: oklch(82% 0.11 197 / 0.1);
  border-color: oklch(82% 0.11 197 / 0.32);
}
.badge--future {
  color: var(--violet);
  background: oklch(66% 0.19 300 / 0.1);
  border-color: oklch(66% 0.19 300 / 0.32);
}

/* ---- Cards ------------------------------------------------ */
.card {
  --accent: var(--gold);
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--hairline);
  /* layered glass: a cool highlight up top fading to deep surface — not flat */
  background:
    linear-gradient(160deg, oklch(30% 0.05 285 / 0.30) 0%, oklch(17% 0.03 275 / 0.55) 55%),
    var(--glass);
  backdrop-filter: blur(var(--blur));
  padding: var(--space-3);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out-expo),
              border-color var(--dur) ease,
              box-shadow var(--dur) ease;
}
/* Iridescent edge that lights on hover, tinted by each card's --accent */
.card::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
     color-mix(in oklch, var(--accent), transparent 30%) 0%,
     transparent 42%,
     color-mix(in oklch, var(--iris), transparent 55%) 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0.35;
  transition: opacity var(--dur) ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: var(--shadow-deep),
              0 0 60px -18px color-mix(in oklch, var(--accent), transparent 45%);
}
.card:hover::before { opacity: 1; }

/* Interactive spotlight follows cursor (set via JS --mx/--my) */
.card--spot::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 0%),
              color-mix(in oklch, var(--accent), transparent 84%), transparent 62%);
  opacity: 0; transition: opacity var(--dur) ease; pointer-events: none;
}
.card--spot:hover::after { opacity: 1; }

/* ---- Header / nav ----------------------------------------- */
.masthead {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  transition: background var(--dur) ease, border-color var(--dur) ease;
  border-bottom: 1px solid transparent;
}
.masthead.is-stuck {
  background: oklch(12% 0.028 275 / 0.72);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom-color: var(--hairline);
  padding-block: 0.75rem;
}
.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: 0.02em;
}
.wordmark b { font-weight: 600; }
.wordmark .x {
  color: var(--gold);
  font-style: italic;
}
.wordmark small {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-faint);
}
.masthead nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}
.masthead nav a {
  font-size: var(--text-sm);
  color: var(--text-muted);
  position: relative;
  transition: color var(--dur-fast) ease;
}
.masthead nav a::after {
  content: ""; position: absolute; left: 0; bottom: -4px;
  width: 100%; height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur) var(--ease-out-expo);
}
.masthead nav a:hover { color: var(--text); }
.masthead nav a:hover::after { transform: scaleX(1); }
.masthead .nav-links { display: none; }
@media (min-width: 900px) { .masthead .nav-links { display: flex; } }

/* ---- Persistent controls (motion + sound) ----------------- */
.controls {
  position: fixed;
  bottom: 1.4rem; right: 1.4rem;
  z-index: 810;
  display: flex;
  gap: 0.6rem;
}
.ctrl {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline-2);
  background: var(--glass-2);
  backdrop-filter: blur(var(--blur));
  color: var(--text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.ctrl:hover { color: var(--text); border-color: var(--gold-deep); }
.ctrl .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-faint);
  transition: background var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.ctrl[aria-pressed="true"] .dot {
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold);
}

/* ---- Section headers -------------------------------------- */
.section-head { margin-bottom: var(--space-4); max-width: 42ch; }
.section-head .eyebrow { display: block; margin-bottom: 1rem; }
.section-head h2 { font-size: var(--text-2xl); }
.section-head p { color: var(--text-muted); margin-top: 1rem; font-size: var(--text-lg); }

/* ---- Divider rule with a signal node ---------------------- */
.rule {
  display: flex; align-items: center; gap: 1rem;
  color: var(--text-faint);
}
.rule::before, .rule::after {
  content: ""; height: 1px; flex: 1;
  background: linear-gradient(90deg, transparent, var(--hairline-2), transparent);
}