/* ============================================
   日期导航条 + 购物车样式
   ============================================ */

/* --- 日期导航条 --- */
.date-nav {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
}

.date-nav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.date-nav-arrow {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-primary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.date-nav-arrow:hover {
  background: var(--color-bg-light);
  border-color: var(--color-primary-light);
}

.date-nav-dates {
  display: flex;
  flex: 1;
  gap: 2px;
  overflow: hidden;
}

.date-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem 0.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  min-width: 0;
}

.date-nav-item:hover {
  background: var(--color-bg-light);
  border-color: var(--color-primary-light);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.date-nav-item.active {
  background: var(--color-primary-dark);
  color: #fff;
  border-color: var(--color-primary-dark);
}

.date-nav-item.active .date-nav-month,
.date-nav-item.active .date-nav-day {
  color: #fff;
}

.date-nav-item.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
  background: var(--color-bg);
  border-color: var(--color-border);
}

.date-nav-month {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.date-nav-day {
  font-size: 0.72rem;
  color: var(--color-text-light);
  margin-top: 1px;
}

/* --- 购物车图标按钮 --- */
.route-summary-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.cart-icon-btn {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-accent);
  padding: 0.5rem;
  border-radius: var(--radius);
  transition: background 0.15s;
}

.cart-icon-btn:hover {
  background: var(--color-bg-light);
}

.cart-badge {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* --- Add to Cart 按钮 --- */
.btn-add-cart {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.btn-add-cart:hover {
  background: var(--color-accent-hover);
}

/* --- 购物车抽屉 --- */
.cart-drawer {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
}

.cart-drawer.open {
  pointer-events: auto;
}

.cart-drawer-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.3s;
}

.cart-drawer.open .cart-drawer-overlay {
  opacity: 1;
}

.cart-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 380px;
  max-width: 90vw;
  background: var(--color-bg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.cart-drawer.open .cart-drawer-panel {
  transform: translateX(0);
}

.cart-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.cart-drawer-header h2 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin: 0;
  color: var(--color-primary-dark);
}

.cart-drawer-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--color-text-light);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius);
}

.cart-drawer-close:hover {
  background: var(--color-bg-light);
  color: var(--color-text);
}

.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md) var(--space-lg);
}

/* 空状态 */
.cart-empty {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--color-text-light);
}

.cart-empty-hint {
  font-size: 0.88rem;
  margin-top: var(--space-sm);
}

/* 购物车条目 */
.cart-item {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
}

.cart-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xs);
}

.cart-item-route {
  font-weight: 600;
  color: var(--color-primary-dark);
  font-size: 0.95rem;
}

.cart-item-remove {
  background: none;
  border: none;
  color: var(--color-text-light);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 6px;
  border-radius: 3px;
}

.cart-item-remove:hover {
  background: #fdecea;
  color: var(--color-error);
}

.cart-item-details {
  display: flex;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.cart-item-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-item-seat {
  font-size: 0.85rem;
  color: var(--color-text);
}

.cart-item-price {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 1rem;
}

/* 底部 */
.cart-drawer-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
  color: var(--color-text);
}

.cart-total strong {
  font-size: 1.2rem;
  color: var(--color-primary-dark);
}

.btn-checkout {
  width: 100%;
  padding: 0.75rem;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-checkout:hover {
  background: var(--color-accent-hover);
}

/* --- Toast 提示 --- */
.cart-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 1100;
  white-space: nowrap;
}

.cart-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.cart-toast-warn {
  background: #e67e22;
}

/* --- 响应式 --- */
@media (max-width: 640px) {
  .date-nav-dates {
    gap: 1px;
  }

  .date-nav-item {
    padding: 0.4rem 0.15rem;
  }

  .date-nav-month {
    font-size: 0.72rem;
  }

  .date-nav-day {
    font-size: 0.65rem;
  }

  .route-summary-right {
    gap: var(--space-sm);
  }

  .cart-drawer-panel {
    width: 100%;
    max-width: 100vw;
  }

  .btn-add-cart {
    padding: 0.4rem 0.7rem;
    font-size: 0.78rem;
  }
}