/* ─────────────────────────────────────────────────────────────
   Components — the shared primitives.
   Every animated property is transform/opacity/filter only,
   so everything stays on the GPU compositor.
   ───────────────────────────────────────────────────────────── */

/* Glass panel — the signature surface ──────────────────────── */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  position: relative;
  isolation: isolate;
}
.glass::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--glass-edge), transparent 40%, transparent 60%, var(--glass-edge));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}
.glass-hi { background: var(--glass-bg-hi); }

@supports not (backdrop-filter: blur(1px)) {
  .glass { background: var(--ink-2); }
}

/* Button system ───────────────────────────────────────────── */
.btn {
  --btn-bg: var(--ink-3);
  --btn-fg: var(--fg-strong);
  --btn-br: var(--glass-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: var(--r-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-br);
  font-size: var(--text-sm);
  font-weight: 560;
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
  transform: translateZ(0);           /* layer-promote */
  transition:
    transform var(--d-fast) var(--ease-spring),
    background var(--d-base) var(--ease-smooth),
    box-shadow var(--d-base) var(--ease-smooth),
    border-color var(--d-base) var(--ease-smooth);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.btn::after {                           /* specular sweep on hover */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, #ffffff14 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform var(--d-slower) var(--ease-out-expo);
  pointer-events: none;
}
.btn:hover  { transform: translateY(-1px) translateZ(0); box-shadow: var(--sh-2); }
.btn:hover::after { transform: translateX(120%); }
.btn:active { transform: translateY(0) scale(0.97) translateZ(0); transition-duration: var(--d-instant); }

.btn-primary {
  --btn-bg: linear-gradient(180deg, var(--flame-400), var(--flame-600));
  --btn-fg: #111;
  --btn-br: #ff8a1f;
  box-shadow: var(--sh-glow-soft);
  font-weight: 620;
}
.btn-primary:hover { box-shadow: var(--sh-glow); }

.btn-ghost {
  --btn-bg: transparent;
  --btn-br: transparent;
}
.btn-ghost:hover { --btn-bg: var(--ink-hair); }

.btn-lg { height: 56px; padding: 0 28px; font-size: var(--text-md); }
.btn-sm { height: 34px; padding: 0 14px; font-size: var(--text-xs); }
.btn-icon { width: 40px; padding: 0; }

/* Chip ────────────────────────────────────────────────────── */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 28px; padding: 0 12px;
  border-radius: var(--r-pill);
  background: var(--ink-hair);
  border: 1px solid var(--ink-hair-strong);
  font-size: var(--text-xs); color: var(--fg-muted);
  transition: transform var(--d-fast) var(--ease-spring), background var(--d-base);
}
.chip:hover { transform: translateY(-1px); background: var(--ink-hair-strong); color: var(--fg); }
.chip-accent { color: var(--flame-300); background: var(--flame-glow-soft); border-color: var(--flame-glow); }

/* Card ────────────────────────────────────────────────────── */
.card {
  padding: 28px;
  border-radius: var(--r-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: transform var(--d-base) var(--ease-spring), border-color var(--d-base), box-shadow var(--d-base);
  position: relative;
  overflow: hidden;
}
.card:hover { transform: translateY(-3px); border-color: var(--glass-edge); box-shadow: var(--sh-2); }
.card-accent { background: linear-gradient(160deg, var(--flame-glow-soft), transparent 60%), var(--glass-bg); }

/* Input ───────────────────────────────────────────────────── */
.input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: var(--ink-2);
  border: 1px solid var(--ink-hair-strong);
  border-radius: var(--r-md);
  color: var(--fg-strong);
  font-size: var(--text-base);
  transition: border-color var(--d-base), background var(--d-base), box-shadow var(--d-base);
}
.input:focus { outline: none; border-color: var(--flame-400); box-shadow: 0 0 0 4px var(--flame-glow-soft); }
.input::placeholder { color: var(--fg-faint); }

/* Section rhythm */
.section { padding: clamp(72px, 10vw, 140px) 0; position: relative; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: 0.24em; color: var(--flame-300);
  font-weight: 560;
}
.eyebrow::before {
  content: ""; width: 28px; height: 1px; background: var(--flame-400);
}

/* Dot divider */
.dotrow {
  display: inline-flex; gap: 6px; align-items: center;
  color: var(--fg-faint); font-size: var(--text-xs);
}
.dotrow > span { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: .4; }

/* Reveal — driven by IntersectionObserver in motion.js */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--d-slower) var(--ease-out-expo),
    transform var(--d-slower) var(--ease-out-expo);
  will-change: transform, opacity;
}
[data-reveal].in { opacity: 1; transform: translateY(0); }
[data-reveal].in.settled { will-change: auto; }  /* release after anim */

/* Magnetic button — follows cursor within a small radius */
.magnet {
  transform: translate3d(var(--tx, 0), var(--ty, 0), 0);
  transition: transform var(--d-base) var(--ease-spring);
}

/* Tooltip */
.tip { position: relative; }
.tip[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px); left: 50%;
  transform: translate(-50%, 4px);
  background: var(--ink-4);
  color: var(--fg);
  font-size: var(--text-xs);
  padding: 6px 10px;
  border-radius: var(--r-sm);
  white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity var(--d-fast), transform var(--d-fast) var(--ease-spring);
  border: 1px solid var(--ink-hair-strong);
}
.tip:hover::after { opacity: 1; transform: translate(-50%, 0); }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #ffffff14; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #ffffff22; }
::-webkit-scrollbar-track { background: transparent; }

/* Loading shimmer */
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, #ffffff05 0%, #ffffff12 50%, #ffffff05 100%);
  background-size: 200% 100%;
  animation: shimmer 1.8s linear infinite;
  border-radius: var(--r-sm);
}

/* Orange glow bead — the brand punctuation */
.bead {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--flame-500);
  box-shadow: 0 0 0 4px var(--flame-glow-soft), 0 0 16px var(--flame-500);
  animation: beadPulse 2.4s var(--ease-smooth) infinite;
}
@keyframes beadPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.15); opacity: 0.7; }
}