/* ============================================================
   Apple Liquid Glass Cart Theme v4 - Complete Redesign
   IDC 购物车 · 液态玻璃 · 极简风格 · 大改动
   ============================================================ */

/* ===== Design Tokens ===== */
:root {
  --glass-bg: rgba(255,255,255,0.72);
  --glass-border: rgba(255,255,255,0.35);
  --blur-lg: saturate(180%) blur(20px);
  --blur-md: saturate(150%) blur(12px);
  --blue: #007AFF;
  --blue-light: #5AC8FA;
  --green: #34C759;
  --orange: #FF9500;
  --red: #FF3B30;
  --purple: #AF52DE;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #a1a1a6;
  --bg: #f5f5f7;
  --card-bg: rgba(255,255,255,0.6);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Body ===== */
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 600px at 80% 20%, rgba(0,122,255,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 600px 500px at 20% 80%, rgba(90,200,250,0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ===== Cart Layout ===== */
.cart-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 32px;
}

.cart-header {
  margin-bottom: 40px;
}

.cart-header h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text-primary), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cart-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ===== Category Sidebar ===== */
.category-sidebar {
  position: sticky;
  top: 100px;
}

/* Right sidebar adjustments */
.col-sm-3 .category-card,
.col-sm-2 .category-card {
  margin-left: 8px;
}

.category-card {
  background: var(--card-bg);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 20px;
  transition: var(--transition);
}

.category-card:hover {
  box-shadow: var(--shadow-md);
}

.category-header {
  background: linear-gradient(135deg, rgba(0,122,255,0.08), rgba(90,200,250,0.04));
  padding: 24px;
  border-bottom: 1px solid var(--glass-border);
}

.category-header h5 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-header p {
  color: var(--text-secondary);
  font-size: 13px;
  margin: 0;
}

.category-body {
  padding: 20px;
}

/* Search box */
.search-box {
  position: relative;
  margin-top: 16px;
}

.search-box input {
  width: 100%;
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--glass-border);
  border-radius: 980px;
  padding: 10px 40px 10px 16px;
  font-size: 14px;
  color: var(--text-primary);
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  background: white;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(0,122,255,0.15);
}

.search-box input::placeholder {
  color: var(--text-tertiary);
}

.search-box .search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

/* Category list */
.category-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-list li {
  margin-bottom: 4px;
}

.category-list a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
}

.category-list a:hover {
  background: rgba(0,122,255,0.05);
  color: var(--blue);
}

.category-list li.active a {
  background: rgba(0,122,255,0.08);
  color: var(--blue);
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(0,122,255,0.15);
}

/* Subcategory */
.subcategory-list {
  list-style: none;
  padding-left: 12px;
  margin: 4px 0;
}

.subcategory-list li {
  margin-bottom: 2px;
}

.subcategory-list a {
  font-size: 13px;
  padding: 8px 14px;
}

/* ===== Product Cards ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--card-bg);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card .badge-new {
  position: absolute;
  top: 16px;
  right: 16px;
  background: linear-gradient(135deg, var(--orange), #FF6B35);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
}

.product-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.product-desc pre {
  background: transparent;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: 0;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--text-tertiary);
}

.product-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.product-price {
  margin-bottom: 20px;
}

.product-price .price {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.product-price .period {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  -webkit-text-fill-color: var(--text-secondary);
}

.product-price .original {
  font-size: 13px;
  color: var(--text-tertiary);
  text-decoration: line-through;
  margin-top: 4px;
}

.product-actions {
  display: flex;
  gap: 12px;
}

/* ===== Buttons ===== */
.btn {
  border-radius: 980px !important;
  font-weight: 600 !important;
  padding: 12px 28px !important;
  transition: var(--transition) !important;
  border: none !important;
  font-size: 14px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-light)) !important;
  box-shadow: 0 4px 16px rgba(0,122,255,0.3) !important;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0056CC, var(--blue)) !important;
  box-shadow: 0 6px 24px rgba(0,122,255,0.4) !important;
  transform: translateY(-2px) !important;
}

.btn-outline {
  background: transparent !important;
  border: 1.5px solid var(--glass-border) !important;
  color: var(--text-secondary) !important;
}

.btn-outline:hover {
  border-color: var(--blue) !important;
  color: var(--blue) !important;
  background: rgba(0,122,255,0.05) !important;
}

/* ===== Config Page ===== */
.config-container {
  background: var(--card-bg);
  backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.config-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--glass-border);
}

.config-header h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.config-header p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* Form controls */
.form-control {
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 15px;
  transition: var(--transition);
}

.form-control:focus {
  background: white;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(0,122,255,0.15);
  outline: none;
}

/* Select */
.bootstrap-select .dropdown-toggle {
  background: rgba(255,255,255,0.5) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-sm) !important;
  padding: 12px 16px !important;
  font-size: 15px !important;
}

.bootstrap-select .dropdown-toggle:focus {
  outline: none !important;
  box-shadow: 0 0 0 4px rgba(0,122,255,0.15) !important;
}

.bootstrap-select .dropdown-menu {
  background: var(--glass-bg) !important;
  backdrop-filter: var(--blur-lg) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-md) !important;
}

/* Range slider */
.irs--flat .irs-bar {
  background: linear-gradient(90deg, var(--blue), var(--blue-light)) !important;
  border-radius: 100px !important;
}

.irs--flat .irs-handle {
  background: white !important;
  border: 3px solid var(--blue) !important;
  box-shadow: 0 2px 12px rgba(0,122,255,0.3) !important;
  width: 22px !important;
  height: 22px !important;
  top: 17px !important;
}

.irs--flat .irs-line {
  background: rgba(0,0,0,0.05) !important;
  border-radius: 100px !important;
}

.irs--flat .irs-from,
.irs--flat .irs-to,
.irs--flat .irs-single {
  background: var(--blue) !important;
  border-radius: var(--radius-sm) !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  padding: 4px 10px !important;
}

/* ===== Order Summary ===== */
.order-summary {
  background: var(--card-bg);
  backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 100px;
}

.order-summary h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--glass-border);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  font-size: 15px;
}

.summary-row .label {
  color: var(--text-secondary);
}

.summary-row .value {
  font-weight: 600;
  color: var(--text-primary);
}

.summary-row.discount .value {
  color: var(--green);
}

.summary-total {
  display: flex;
  justify-content: space-between;
  padding: 20px 0 0;
  margin-top: 8px;
  border-top: 2px solid var(--glass-border);
}

.summary-total .label {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.summary-total .value {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== Wizard Steps ===== */
.wizard-steps {
  display: flex;
  gap: 0;
  margin-bottom: 40px;
  background: var(--card-bg);
  backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 8px;
  box-shadow: var(--shadow-sm);
}

.wizard-step {
  flex: 1;
  text-align: center;
  padding: 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  position: relative;
}

.wizard-step.active {
  background: rgba(0,122,255,0.08);
  color: var(--blue);
  font-weight: 600;
}

.wizard-step.completed {
  color: var(--green);
}

.wizard-step::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  right: 20%;
  height: 3px;
  background: var(--blue);
  border-radius: 100px;
  opacity: 0;
  transition: var(--transition);
}

.wizard-step.active::after {
  opacity: 1;
}

/* ===== Payment Methods ===== */
.payment-methods {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.payment-method {
  background: rgba(255,255,255,0.4);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 16px;
}

.payment-method:hover {
  border-color: rgba(0,122,255,0.3);
  background: rgba(255,255,255,0.6);
}

.payment-method.selected {
  border-color: var(--blue);
  background: rgba(0,122,255,0.05);
}

.payment-method .icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.payment-method .info h5 {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 4px;
}

.payment-method .info p {
  font-size: 13px;
  color: var(--text-secondary);
  margin: 0;
}

/* ===== Promo Code ===== */
.promo-code {
  display: flex;
  gap: 12px;
  margin: 24px 0;
}

.promo-code input {
  flex: 1;
}

/* ===== Animations ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.product-card { animation: fadeUp 0.5s ease-out; }
.config-container { animation: scaleIn 0.4s ease-out; }
.order-summary { animation: fadeUp 0.5s ease-out 0.2s both; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.15);
  border-radius: 100px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.25); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .cart-wrapper { padding: 20px 16px; }
  .cart-header h1 { font-size: 28px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card { padding: 24px; }
  .config-container { padding: 24px; }
  .wizard-steps { flex-direction: column; }
}


/* ===== Firstbox / Secondbox (Category Sidebar) ===== */
.firstbox,
.secondbox {
  min-height: 400px;
  max-height: 600px;
  overflow-y: auto;
}

.firstbox {
  border-right: 1px solid var(--glass-border);
  padding-right: 8px;
  min-height: 300px;
}

.firstbox .category-list li {
  margin-bottom: 2px;
}

.firstbox .category-list li a {
  font-size: 13px;
  padding: 8px 10px;
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.firstbox .category-list li a:hover {
  background: rgba(0,122,255,0.05);
  color: var(--blue);
}

.firstbox .category-list li.active a {
  background: rgba(0,122,255,0.08);
  color: var(--blue);
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(0,122,255,0.15);
}

.secondbox {
  padding-left: 8px;
}

.secondbox .category-list > li {
  margin-bottom: 4px;
}

.secondbox .subcategory-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.secondbox .subcategory-list li {
  margin-bottom: 2px;
}

.secondbox .subcategory-list li a {
  font-size: 13px;
  padding: 8px 10px;
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.secondbox .subcategory-list li a:hover {
  background: rgba(0,122,255,0.05);
  color: var(--blue);
}

.secondbox .subcategory-list li.active a {
  background: rgba(0,122,255,0.08);
  color: var(--blue);
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(0,122,255,0.15);
}

/* Scrollbar for firstbox/secondbox */
.firstbox::-webkit-scrollbar,
.secondbox::-webkit-scrollbar {
  width: 4px;
}

.firstbox::-webkit-scrollbar-thumb,
.secondbox::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.1);
  border-radius: 100px;
}

/* Prolist */
.prolist {
  width: 100%;
}

/* Fix row inside category-body */
.category-body .row {
  margin: 0;
}

.category-body .col-6 {
  padding: 0 4px;
}