.iap {
  padding: 16px;
  padding-bottom: 90px;
  max-width: 480px;
  margin: 0 auto;
}

.iap__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  margin-bottom: 20px;
  background: var(--primary-400);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--border-radius-lg);
}

.iap__title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.iap__balance {
  display: flex;
  align-items: center;
  gap: 6px;
}

.iap__balance-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}

.iap__balance-value {
  font-size: 16px;
  font-weight: 800;
  color: var(--special-100);
}

.iap__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.iap__grid-skeleton {
  height: 220px;
}

.iap__grid--loading {
  opacity: 0.6;
  pointer-events: none;
}

.iap__card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 14px 14px;
  background: var(--primary-400);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-fast);
}

.iap__card:active {
  transform: scale(0.98);
}

.iap__card--popular {
  border-color: var(--special-200);
  box-shadow: 0 0 20px rgba(244, 220, 0, 0.15);
}

.iap__card--best {
  border-color: var(--purchase-200);
  box-shadow: 0 0 20px rgba(37, 183, 85, 0.15);
}

.iap__badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
}

.iap__badge--popular {
  background: var(--special-200);
  color: var(--primary-500);
}

.iap__badge--best {
  background: var(--purchase-200);
  color: #fff;
}

.iap__card-icon {
  width: 76px;
  height: 76px;
  margin-bottom: 12px;
}

.iap__card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.iap__card-info {
  margin-bottom: 12px;
}

.iap__card-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.iap__card-desc {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.4;
  min-height: 30px;
}

.iap__card-amount {
  margin-bottom: 12px;
}

.iap__coins {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: var(--special-100);
  line-height: 1.2;
}

.iap__bonus {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 8px;
  background: var(--purchase-200);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  border-radius: 4px;
}

.iap__buy-btn {
  width: 100%;
  padding: 12px;
  font-size: 14px;
}

.iap__footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: var(--primary-500);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.iap__footer .iap__restore-btn {
  width: 100%;
  max-width: 448px;
  margin: 0 auto;
  display: block;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-md);
  background: transparent;
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  font-weight: 600;
  transition: background var(--transition-fast);
}

.iap__footer .iap__restore-btn:active {
  background: rgba(255, 255, 255, 0.08);
}

.iap__empty {
  grid-column: 1 / -1;
  padding: 48px 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}

/* 成功彈窗 */
.iap__success-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--purchase-200);
  border-radius: 50%;
  font-size: 28px;
  color: #fff;
  animation: pulse 0.4s ease;
}

.iap__success-title {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.iap__success-coins {
  font-size: 26px;
  font-weight: 800;
  color: var(--special-100);
  margin-bottom: 20px;
}

.iap__success-close {
  width: 100%;
}

/* 載入遮罩 */
.iap__loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.7);
  animation: fade-in 0.2s ease;
}

.iap__loading-overlay p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

/* Toast */
.iap__toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1300;
  max-width: 80%;
  padding: 10px 18px;
  background: var(--primary-400);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--border-radius-md);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: slide-up 0.25s ease;
}