.button-group {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* --- Button Core --- */
.btn {
  position: relative;
  padding: 12px 28px;
  border-radius: 28px;
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
  overflow: hidden;
  z-index: 0;
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
  transition:
    transform 220ms cubic-bezier(.2,.9,.2,1),
    box-shadow 320ms cubic-bezier(.2,.9,.2,1),
    opacity 200ms ease,
    background 300ms ease;
  opacity: 0;
  transform: scale(0.97);
  animation: buttonPop 0.9s ease-out 1.2s forwards;
  animation-fill-mode: forwards;
}

/* --- Light shimmer sweep --- */
.btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -150%;
  width: 300%;
  height: 100%;
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.22) 0%,
    rgba(255, 255, 255, 0.08) 45%,
    rgba(255, 255, 255, 0) 70%
  );
  transform: skewX(-20deg);
  transition: left 700ms cubic-bezier(.2,.9,.2,1);
  z-index: 0;
  pointer-events: none;
}

.btn:hover::after {
  left: -25%;
}

.btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.3),
    0 0 30px rgba(216,156,90,0.06);
  opacity: 1;
}

.btn:active {
  transform: translateY(1px) scale(0.96);
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.35) inset,
    0 2px 6px rgba(0, 0, 0, 0.25);
}

/* --- Glow layer --- */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  z-index: 1;
  transition: box-shadow 0.6s cubic-bezier(.2,.9,.2,1);
}

.btn:hover::before {
  box-shadow:
    0 10px 30px rgba(216,156,90,0.07),
    0 6px 18px rgba(0,0,0,0.18);
}

/* --- Color Variants --- */
.btn--wood { background: linear-gradient(135deg, var(--wood), #7a5642); }
.btn--leaf { background: linear-gradient(135deg, var(--leaf), #8fa98d); }
.btn--brick { background: linear-gradient(135deg, var(--brick), #e87a6b); }
.btn--navy { background: linear-gradient(135deg, var(--navy), #48688a); }
.btn--accent { background: linear-gradient(135deg, var(--accent), #f0b97a); }