/* ============================================
   BUTTONS (PREMIUM HIGH-END)
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 28px;
  font-weight: 800;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  white-space: nowrap;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.75rem;
}

/* Primary Button */
.btn-primary {
  background: var(--color-orange);
  color: #000;
  box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
  background: var(--color-orange-dark);
  transform: translateY(-3px);
  box-shadow: 0 15px 30px -10px var(--color-orange-glow);
}

/* Secondary Button */
.btn-secondary {
  background: var(--color-text);
  color: var(--color-bg-base);
}

.btn-secondary:hover {
  background: var(--color-orange);
  color: #000;
  transform: translateY(-3px);
  box-shadow: var(--shadow-orange);
}

/* Glass Button */
.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  color: var(--color-text);
}

.btn-glass:hover {
  background: var(--color-bg-card);
  border-color: var(--color-orange);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* Success Button */
.btn-success {
  background: var(--color-success);
  color: #000;
  box-shadow: 0 8px 24px -8px var(--color-success);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px var(--color-success);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Icon Support */
.btn i {
  font-size: 1.25rem;
}

/* Pulse Animation for Add to Cart */
@keyframes btnPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.btn-anim-pulse {
  animation: btnPulse 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
/* Loading State */
.btn.loading {
  color: transparent !important;
  pointer-events: none;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin: -10px 0 0 -10px;
  border: 3px solid rgba(0,0,0,0.1);
  border-radius: 50%;
  border-top-color: currentColor;
  animation: btn-spin 0.6s linear infinite;
}

.btn-secondary.loading::after {
  border-top-color: #fff;
}

@keyframes btn-spin {
  to { transform: rotate(360deg); }
}