/*
 * Frisian Orchard — Buttons
 * Classes: .fo-shimmer-btn | .fo-solid-gold-btn | .fo-ghost-btn
 * Adjust shimmer speed: --fo-shimmer-duration in variables.css
 */

.fo-shimmer-btn,
.fo-solid-gold-btn,
.fo-ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: var(--fo-btn-padding);
  font-family: var(--fo-font-sans);
  font-size: clamp(0.75rem, 1.5vw, 0.8125rem);
  font-weight: var(--fo-font-sans-weight);
  letter-spacing: var(--fo-btn-letter-spacing);
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--fo-btn-radius);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--fo-transition), box-shadow var(--fo-transition);
  white-space: nowrap;
}

.fo-shimmer-btn:active,
.fo-solid-gold-btn:active,
.fo-ghost-btn:active {
  transform: scale(0.98);
}

/* ── Ghost / Glass Shimmer (outlined) ── */
.fo-shimmer-btn {
  background:
    var(--fo-shimmer-gradient) -120% 0 / 200% 100% no-repeat,
    var(--fo-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--fo-btn-border-width) solid var(--fo-glass-border);
  color: var(--fo-text-white);
  transition:
    background-position var(--fo-shimmer-duration) var(--fo-ease-luxury),
    border-color var(--fo-transition),
    box-shadow var(--fo-transition),
    transform var(--fo-transition);
}

.fo-shimmer-btn::before {
  content: none;
}

.fo-solid-gold-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--fo-shimmer-gradient);
  transform: translateX(-120%);
  transition: transform var(--fo-shimmer-duration) var(--fo-ease-luxury);
  z-index: 1;
  pointer-events: none;
  mix-blend-mode: soft-light;
  opacity: 0.75;
}

.fo-shimmer-btn:hover,
.fo-shimmer-btn:focus-visible {
  background-position: 120% 0, 0 0;
  border-color: rgba(var(--fo-gold-rgb), 0.55);
  box-shadow: 0 0 24px rgba(var(--fo-gold-rgb), 0.12);
}

/* ── Solid Gold ── */
.fo-solid-gold-btn {
  background: var(--fo-gold-gradient);
  border: none;
  color: var(--fo-bg-obsidian);
}

.fo-solid-gold-btn:hover::before,
.fo-solid-gold-btn:focus-visible::before {
  transform: translateX(120%);
}

.fo-solid-gold-btn:hover,
.fo-solid-gold-btn:focus-visible {
  filter: brightness(1.08);
  box-shadow: 0 4px 24px rgba(var(--fo-gold-rgb), 0.3);
}

.fo-solid-gold-btn--lg {
  padding: 1.25rem 3rem;
  font-size: clamp(0.8125rem, 1.5vw, 0.875rem);
}

/* ── Ghost (border only) ── */
.fo-ghost-btn {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: var(--fo-btn-border-width) solid var(--fo-gold-champagne);
  color: var(--fo-text-white);
}

.fo-ghost-btn:hover,
.fo-ghost-btn:focus-visible {
  background: rgba(var(--fo-gold-rgb), 0.08);
  box-shadow: 0 0 20px rgba(var(--fo-gold-rgb), 0.1);
}

.fo-ghost-btn--light {
  color: var(--fo-text-dark);
  border-color: rgba(var(--fo-gold-rgb), 0.35);
}

.fo-ghost-btn--light:hover,
.fo-ghost-btn--light:focus-visible {
  border-color: var(--fo-gold-champagne);
  background: rgba(var(--fo-gold-rgb), 0.06);
}

/* ── Button group ── */
.fo-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.fo-btn-group--hero {
  align-items: flex-start;
}