/**
 * WAVE-16 D16-6 — Global button design system (Club + Classifieds)
 * Shared gold/yellow tokens · shimmer edges · press/lift · focus rings
 * Load AFTER club.css / revold-club-yellow.css. prefers-reduced-motion safe.
 * Closeout: D16_6_BTN_SYSTEM.md
 */

:root {
  /* —— Shared gold family (Club primary CTA) —— */
  --rc-btn-gold: #e8b84a;
  --rc-btn-gold-deep: #d4a534;
  --rc-btn-gold-bright: #f0c85a;
  --rc-btn-gold-glow: rgba(232, 184, 74, 0.42);
  --rc-btn-ink: #0a0a0a;

  /* —— Shared chick yellow family (Classifieds primary / board) —— */
  --rc-btn-yellow: #f5c518;
  --rc-btn-yellow-bright: #ffd93d;
  --rc-btn-yellow-deep: #e0ac00;
  --rc-btn-yellow-soft: #fff4c2;
  --rc-btn-on-yellow: #1a1f2e;

  /* —— Shared motion + focus tokens —— */
  --rc-btn-radius: 999px;
  --rc-btn-min-h: 44px;
  --rc-btn-lift: -3px;
  --rc-btn-press-y: -1px;
  --rc-btn-press-scale: 0.985;
  --rc-btn-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --rc-btn-shadow-idle: 0 0 0 1px rgba(232, 184, 74, 0.32);
  --rc-btn-shadow-hover: 0 14px 32px var(--rc-btn-gold-glow);
  --rc-btn-shadow-press: 0 4px 14px rgba(232, 184, 74, 0.28);
  --rc-btn-focus-ink: #1a1f2e;
  --rc-btn-focus-ring: 0 0 0 3px rgba(245, 197, 24, 0.45);
  --rc-btn-focus-ring-on-gold: 0 0 0 3px rgba(26, 31, 46, 0.35), 0 0 0 3px rgba(245, 197, 24, 0.45);
  --rc-btn-shimmer-hi: rgba(255, 248, 220, 0.55);
  --rc-btn-shimmer-mid: rgba(255, 255, 255, 0.22);

  /* Aliases so Classifieds rcy-* surfaces read the same SoT */
  --rcy-btn-gold: var(--rc-btn-gold);
  --rcy-btn-gold-deep: var(--rc-btn-gold-deep);
  --rcy-btn-gold-glow: var(--rc-btn-gold-glow);
  --rcy-btn-ink: var(--rc-btn-ink);
  --rcy-btn-lift: var(--rc-btn-lift);
  --rcy-btn-press-scale: var(--rc-btn-press-scale);
  --rcy-btn-focus-ring: var(--rc-btn-focus-ring);
}

/* -------------------------------------------------------------------------- */
/* Keyframes                                                                   */
/* -------------------------------------------------------------------------- */

@keyframes rc-btn-shimmer {
  from {
    background-position: 130% 0;
  }
  to {
    background-position: -30% 0;
  }
}

/* -------------------------------------------------------------------------- */
/* Shared shimmer edge layer (Club + Classifieds primaries)                    */
/* -------------------------------------------------------------------------- */

.btn-primary,
.btn-yellow,
.btn-cta-yellow,
.rcy-btn--primary,
a.rcy-btn--primary,
button.rcy-btn--primary {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.btn-primary::before,
.btn-yellow::before,
.btn-cta-yellow::before,
.rcy-btn--primary::before,
a.rcy-btn--primary::before,
button.rcy-btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    105deg,
    transparent 0%,
    transparent 38%,
    var(--rc-btn-shimmer-mid) 46%,
    var(--rc-btn-shimmer-hi) 50%,
    var(--rc-btn-shimmer-mid) 54%,
    transparent 62%,
    transparent 100%
  );
  background-size: 220% 100%;
  background-position: 130% 0;
  pointer-events: none;
  opacity: 0;
  z-index: 1;
}

.btn-primary > *,
.btn-yellow > *,
.btn-cta-yellow > *,
.rcy-btn--primary > *,
a.rcy-btn--primary > *,
button.rcy-btn--primary > * {
  position: relative;
  z-index: 2;
}

/* -------------------------------------------------------------------------- */
/* Club — gold primary polish (site-wide, not home-only)                       */
/* -------------------------------------------------------------------------- */

.btn-primary,
.btn-yellow {
  background: var(--rc-btn-gold);
  color: var(--rc-btn-ink);
  box-shadow: var(--rc-btn-shadow-idle);
  min-height: var(--rc-btn-min-h);
  border-radius: var(--rc-btn-radius);
  transition:
    transform 0.18s var(--rc-btn-ease),
    box-shadow 0.18s var(--rc-btn-ease),
    background 0.18s var(--rc-btn-ease),
    color 0.18s var(--rc-btn-ease);
}

.btn-cta-yellow {
  background: var(--rc-btn-yellow);
  color: var(--rc-btn-on-yellow);
  box-shadow: 0 0 0 1px rgba(245, 197, 24, 0.35);
  min-height: var(--rc-btn-min-h);
  border-radius: var(--rc-btn-radius);
  transition:
    transform 0.18s var(--rc-btn-ease),
    box-shadow 0.18s var(--rc-btn-ease),
    background 0.18s var(--rc-btn-ease);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .btn-primary:hover,
  .btn-yellow:hover {
    background: var(--rc-btn-gold-deep);
    color: var(--rc-btn-ink);
    transform: translateY(var(--rc-btn-lift));
    box-shadow: var(--rc-btn-shadow-hover);
  }

  .btn-cta-yellow:hover {
    background: var(--rc-btn-yellow-bright);
    color: var(--rc-btn-on-yellow);
    transform: translateY(var(--rc-btn-lift));
    box-shadow: 0 14px 32px rgba(245, 197, 24, 0.28);
  }

  .btn-primary:hover::before,
  .btn-yellow:hover::before,
  .btn-cta-yellow:hover::before {
    opacity: 1;
    animation: rc-btn-shimmer 0.75s ease-out;
  }

  .btn-primary:active,
  .btn-yellow:active,
  .btn-cta-yellow:active {
    transform: translateY(var(--rc-btn-press-y)) scale(var(--rc-btn-press-scale));
    box-shadow: var(--rc-btn-shadow-press);
  }
}

/* -------------------------------------------------------------------------- */
/* Classifieds — yellow primary + shared motion                                */
/* -------------------------------------------------------------------------- */

.rcy-btn,
a.rcy-btn,
button.rcy-btn {
  min-height: var(--rc-btn-min-h);
  border-radius: var(--rc-btn-radius);
  transition:
    background 160ms var(--rc-btn-ease),
    border-color 160ms var(--rc-btn-ease),
    box-shadow 180ms var(--rc-btn-ease),
    transform 140ms var(--rc-btn-ease),
    color 160ms var(--rc-btn-ease);
}

.rcy-btn--primary,
a.rcy-btn--primary,
button.rcy-btn--primary {
  background: var(--rc-btn-yellow);
  color: var(--rc-btn-on-yellow);
  box-shadow: 0 2px 8px rgba(26, 31, 46, 0.06);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  body.rcy-body .rcy-btn--primary:hover,
  body.rcy-body a.rcy-btn--primary:hover,
  body.rcy-body button.rcy-btn--primary:hover,
  .rcy-btn--primary:hover,
  a.rcy-btn--primary:hover,
  button.rcy-btn--primary:hover {
    background: var(--rc-btn-yellow-bright);
    color: var(--rc-btn-on-yellow);
    transform: translateY(var(--rc-btn-lift));
    box-shadow: 0 14px 40px rgba(245, 197, 24, 0.22);
  }

  body.rcy-body .rcy-btn--primary:hover::before,
  body.rcy-body a.rcy-btn--primary:hover::before,
  body.rcy-body button.rcy-btn--primary:hover::before,
  .rcy-btn--primary:hover::before,
  a.rcy-btn--primary:hover::before,
  button.rcy-btn--primary:hover::before {
    opacity: 1;
    animation: rc-btn-shimmer 0.75s ease-out;
  }

  body.rcy-body .rcy-btn:active,
  body.rcy-body a.rcy-btn:active,
  body.rcy-body button.rcy-btn:active,
  .rcy-btn:active,
  a.rcy-btn:active,
  button.rcy-btn:active {
    transform: translateY(var(--rc-btn-press-y)) scale(var(--rc-btn-press-scale));
  }
}

/* Optional gold primary for Classifieds (opt-in class) */
.rcy-btn--gold,
a.rcy-btn--gold,
button.rcy-btn--gold {
  background: var(--rc-btn-gold);
  color: var(--rc-btn-ink);
  box-shadow: var(--rc-btn-shadow-idle);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.rcy-btn--gold::before,
a.rcy-btn--gold::before,
button.rcy-btn--gold::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    105deg,
    transparent 0%,
    transparent 38%,
    var(--rc-btn-shimmer-mid) 46%,
    var(--rc-btn-shimmer-hi) 50%,
    var(--rc-btn-shimmer-mid) 54%,
    transparent 62%,
    transparent 100%
  );
  background-size: 220% 100%;
  background-position: 130% 0;
  pointer-events: none;
  opacity: 0;
  z-index: 1;
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .rcy-btn--gold:hover,
  a.rcy-btn--gold:hover,
  button.rcy-btn--gold:hover {
    background: var(--rc-btn-gold-deep);
    color: var(--rc-btn-ink);
    transform: translateY(var(--rc-btn-lift));
    box-shadow: var(--rc-btn-shadow-hover);
  }

  .rcy-btn--gold:hover::before,
  a.rcy-btn--gold:hover::before,
  button.rcy-btn--gold:hover::before {
    opacity: 1;
    animation: rc-btn-shimmer 0.75s ease-out;
  }
}

/* -------------------------------------------------------------------------- */
/* Focus rings (keyboard) — Club + Classifieds                                 */
/* -------------------------------------------------------------------------- */

.btn:focus-visible,
.btn-primary:focus-visible,
.btn-yellow:focus-visible,
.btn-ghost:focus-visible,
.btn-cta-yellow:focus-visible,
.rcy-btn:focus-visible,
a.rcy-btn:focus-visible,
button.rcy-btn:focus-visible {
  outline: 3px solid var(--rc-btn-focus-ink);
  outline-offset: 2px;
  box-shadow: var(--rc-btn-focus-ring);
}

.btn-primary:focus-visible,
.btn-yellow:focus-visible,
.rcy-btn--primary:focus-visible,
a.rcy-btn--primary:focus-visible,
button.rcy-btn--primary:focus-visible,
.rcy-btn--gold:focus-visible,
a.rcy-btn--gold:focus-visible,
button.rcy-btn--gold:focus-visible {
  outline-color: var(--rc-btn-focus-ink);
  box-shadow: var(--rc-btn-focus-ring-on-gold);
}

/* -------------------------------------------------------------------------- */
/* Reduced motion — kill shimmer / lift / press                                */
/* -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .btn-primary,
  .btn-yellow,
  .btn-cta-yellow,
  .btn,
  .rcy-btn,
  a.rcy-btn,
  button.rcy-btn,
  .rcy-btn--gold {
    transition: none !important;
  }

  .btn-primary:hover,
  .btn-yellow:hover,
  .btn-cta-yellow:hover,
  .btn-primary:active,
  .btn-yellow:active,
  .btn-cta-yellow:active,
  .rcy-btn:hover,
  .rcy-btn:active,
  a.rcy-btn:hover,
  a.rcy-btn:active,
  button.rcy-btn:hover,
  button.rcy-btn:active,
  .rcy-btn--gold:hover,
  .rcy-btn--gold:active {
    transform: none !important;
  }

  .btn-primary::before,
  .btn-yellow::before,
  .btn-cta-yellow::before,
  .rcy-btn--primary::before,
  a.rcy-btn--primary::before,
  button.rcy-btn--primary::before,
  .rcy-btn--gold::before,
  a.rcy-btn--gold::before,
  button.rcy-btn--gold::before {
    animation: none !important;
    opacity: 0 !important;
  }
}