/* --- 1. 全局设计系统变量与主题定义 --- */
:root {
  /* 字体与排版 */
  --font-title: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  /* 全局基础圆角及过渡 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --transition-fast: 0.18s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);

  /* 主题独立颜色 */
  --white: #ffffff;
  --slate-900: #0f172a;
}

/* Django form compatibility: template-rendered fields do not carry prototype classes. */
.form-group input,
.form-group select,
.form-group textarea,
.auth-form input[type="text"],
.auth-form input[type="password"],
.auth-form input[type="email"],
.auth-form input[type="number"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--bg-surface-solid);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.auth-form input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.14);
}

.errorlist {
  margin: 6px 0 0;
  padding-left: 18px;
  color: var(--color-error);
  font-size: 0.8rem;
}

/* 暗黑模式变量 */
html[data-theme="dark"] {
  --bg-app: #060913;
  --bg-surface: rgba(13, 17, 30, 0.7);
  --bg-surface-solid: #0d111e;
  --bg-header: rgba(6, 9, 19, 0.75);
  
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.08);
  
  --color-primary: #06b6d4;
  --color-primary-dark: #0891b2;
  --primary-gradient: linear-gradient(135deg, #06b6d4, #0d9488);
  
  --color-success: #34d399;
  --color-success-bg: rgba(52, 211, 153, 0.1);
  --color-warning: #fbbf24;
  --color-warning-bg: rgba(251, 191, 36, 0.1);
  --color-error: #f87171;
  --color-error-bg: rgba(248, 113, 113, 0.1);
  
  --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  --blur-glass: blur(20px);
  --card-glow: 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
  
  --glow-bubble-1: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(6, 182, 212, 0) 70%);
  --glow-bubble-2: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, rgba(139, 92, 246, 0) 70%);
}

/* 明亮模式变量 */
html[data-theme="light"] {
  --bg-app: #f4f7fa;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-solid: #ffffff;
  --bg-header: rgba(244, 247, 250, 0.8);
  
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --primary-gradient: linear-gradient(135deg, #0d9488, #0f766e);
  
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.08);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.08);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.08);
  
  --shadow-card: 0 10px 30px -5px rgba(15, 23, 42, 0.06), 0 8px 12px -6px rgba(15, 23, 42, 0.04);
  --blur-glass: blur(16px);
  --card-glow: 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  
  --glow-bubble-1: radial-gradient(circle, rgba(13, 148, 136, 0.08) 0%, rgba(13, 148, 136, 0) 70%);
  --glow-bubble-2: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0) 70%);
}

/* --- 2. 基础重置与呼吸背景 --- */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background-color: var(--bg-app);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  position: relative;
}

/* 背景呼吸感流光 */
body::before, body::after {
  content: "";
  position: absolute;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  z-index: -10;
  pointer-events: none;
  filter: blur(80px);
  animation: floatBubbles 12s ease-in-out infinite alternate;
}
body::before {
  top: -250px;
  right: -150px;
  background: var(--glow-bubble-1);
}
body::after {
  bottom: -250px;
  left: -250px;
  background: var(--glow-bubble-2);
  animation-delay: -6s;
}

@keyframes floatBubbles {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 30px) scale(1.1); }
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-primary-dark);
}

/* --- 3. 布局结构与头部导航栏 --- */
#root {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-header);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.site-header .nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  position: relative; /* 必须：提供绝对定位基准 */
  min-height: 72px;   /* 确保固定高度 */
}

.site-header .logo {
  font-family: var(--font-title);
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: 36px;   /* 靠左微调 */
  margin-right: 360px; /* 重要：为右侧绝对定位卡片留出足够空间 */
}

.site-header nav a {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 1.02rem;
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition-fast);
}

.site-header nav a:hover,
.site-header nav a.active {
  color: var(--color-text);
}

.site-header nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width var(--transition-fast) ease, left var(--transition-fast) ease;
}

.site-header nav a.active::after {
  width: 100%;
  left: 0;
}

/* --- 右上角强绝对定位控制卡片 (Control Card) --- */
.header-control-card {
  position: absolute; /* 绝对定位：确保其永远在最右侧 */
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--card-glow);
  transition: all var(--transition-normal);
}

/* 卡片式双色模式切换器 (Theme Card Toggle) */
.theme-card-toggle {
  display: inline-flex;
  background-color: rgba(0, 0, 0, 0.06);
  padding: 2px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--color-border);
  position: relative;
  cursor: pointer;
  user-select: none;
}
html[data-theme="dark"] .theme-card-toggle {
  background-color: rgba(255, 255, 255, 0.04);
}

.theme-option {
  padding: 4px 10px;
  font-size: 0.76rem;
  font-weight: 700;
  border-radius: calc(var(--radius-xs) - 2px);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
}

.theme-option.active {
  color: var(--white);
  background: var(--primary-gradient);
  box-shadow: 0 2px 8px rgba(13, 148, 136, 0.2);
}
html[data-theme="light"] .theme-option.active {
  color: var(--slate-900);
  background: var(--white);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
}

.theme-option svg {
  width: 13px;
  height: 13px;
}

/* --- 4. 按钮系统 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  outline: none;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--primary-gradient);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.35);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background-color: var(--color-text);
  color: var(--bg-surface-solid);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  background-color: var(--color-border);
  border-color: var(--color-primary);
}

.btn:disabled {
  background: #cbd5e1 !important;
  color: #94a3b8 !important;
  cursor: not-allowed !important;
  box-shadow: none !important;
  transform: none !important;
}
html[data-theme="dark"] .btn:disabled {
  background: #242b3d !important;
  color: #4b5563 !important;
}

/* --- 5. 标题与模块 UI 优化 --- */
.app-container {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* 流光炫彩文字与发光 (Aurora Glow Text) */
.gradient-title {
  font-family: var(--font-title);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 10px rgba(6, 182, 212, 0.15));
}
html[data-theme="dark"] .gradient-title {
  text-shadow: 0 0 40px rgba(6, 182, 212, 0.25);
}

.section-header-centered {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-header-centered h2 {
  font-family: var(--font-title);
  font-size: 2.25rem;
  font-weight: 800;
  margin-top: 0;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-header-centered p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin: 0;
}

/* --- 6. 卡片网格与流光卡片 --- */
.grid-2, .grid-3, .grid-4 {
  display: grid;
  gap: 28px;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-card);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--shadow-card);
  box-shadow: var(--card-glow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card-hover:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: var(--shadow-card), 0 12px 36px -10px rgba(6, 182, 212, 0.25);
}

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

/* 热门套餐的特殊流光动效 (Animated Border) */
.glowing-package-card {
  border: 1.5px solid transparent;
  background: linear-gradient(var(--bg-surface-solid), var(--bg-surface-solid)) padding-box,
              var(--primary-gradient) border-box;
  box-shadow: var(--shadow-card), 0 10px 30px -5px rgba(6, 182, 212, 0.2);
}

.glowing-package-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(6, 182, 212, 0.15), transparent);
  transform: rotate(45deg);
  animation: shine 5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes shine {
  0% { transform: translate(-100%, -100%) rotate(45deg); }
  100% { transform: translate(100%, 100%) rotate(45deg); }
}

/* --- 7. 特色与步骤 UI --- */
.hero-section {
  text-align: center;
  padding: 68px 0 54px;
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.hero-section h1 {
  font-size: clamp(2.5rem, 6vw, 3.85rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-section p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 680px;
  margin: 0 auto 38px;
}

/* 页脚与其它组件 */
.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--bg-surface-solid);
  padding: 54px 24px 36px;
  margin-top: auto;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* 动效进度条 */
.stock-progress-bar {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  animation: pulseBar 2s infinite alternate;
}

@keyframes pulseBar {
  0% { opacity: 0.88; }
  100% { opacity: 1; filter: brightness(1.1) drop-shadow(0 0 2px var(--color-primary)); }
}

/* 移动端/平板 媒体查询绝对定位修正 */
@media (max-width: 992px) {
  .site-header .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    min-height: auto;
  }
  .site-header nav {
    margin-left: 0;
    margin-top: 12px;
    margin-right: 0; /* 清理 */
    gap: 20px;
  }
  /* 在小屏幕下，强制使用绝对定位将其固定在右侧，大小自适应，不折行占据 100% */
  .header-control-card {
    position: absolute;
    right: 24px;
    top: 20px; /* 与左侧 Logo 平行高度 */
    transform: none;
    width: auto;
  }
}
@media (max-width: 576px) {
  .site-header nav {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 12px;
  }
}

/* --- 8. 表单与交互控件 UI 优化 (Forms & Controls) --- */
.hidden {
  display: none !important;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.form-group label {
  display: block;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  text-align: left;
  letter-spacing: 0.02em;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  font-size: 0.9rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  outline: none;
}
html[data-theme="light"] .form-control {
  background-color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.form-control:focus {
  border-color: var(--color-primary);
  background-color: rgba(0, 0, 0, 0.25);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}
html[data-theme="light"] .form-control:focus {
  background-color: var(--white);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.form-control::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

/* 选项卡头部与按钮 (Tabs Header & Tab Buttons) */
.tabs-header {
  display: flex;
  background-color: rgba(0, 0, 0, 0.15);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  width: fit-content;
  margin: 0 auto;
}
html[data-theme="light"] .tabs-header {
  background-color: rgba(0, 0, 0, 0.04);
}

.tab-btn {
  background: transparent;
  border: none;
  padding: 8px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
  outline: none;
}

.tab-btn:hover {
  color: var(--color-text);
}

.tab-btn.active {
  color: var(--white) !important;
  background: var(--primary-gradient);
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.25);
}
html[data-theme="light"] .tab-btn.active {
  color: var(--white) !important;
  background: var(--primary-gradient);
  box-shadow: 0 2px 8px rgba(13, 148, 136, 0.2);
}

/* 表单内复选框 (Checkbox Styling) */
.form-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-checkbox span {
  line-height: 1;
}

/* 提示信息框 */
.notice-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.86rem;
  line-height: 1.5;
}

.notice-box.warning {
  background-color: var(--color-warning-bg);
  border: 1px solid rgba(251, 191, 36, 0.25);
  color: var(--color-warning);
}

.notice-box svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* --- 9. 套餐卡片、库存指示与收银台支付 UI 优化 --- */
.package-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.package-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  color: var(--white);
  letter-spacing: 0.05em;
}

.package-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.package-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--color-text);
}

.package-features li svg {
  width: 14px;
  height: 14px;
  color: var(--color-success);
  flex-shrink: 0;
}

/* 库存横幅 (Stock Banner) */
.stock-banner {
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--card-glow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
html[data-theme="light"] .stock-banner {
  background-color: var(--white);
}

.stock-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}

.stock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 10px var(--color-success);
  display: inline-block;
  animation: pulseDot 2s infinite alternate;
}

.stock-dot.low {
  background-color: var(--color-error);
  box-shadow: 0 0 10px var(--color-error);
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.1); opacity: 1; }
}

.stock-indicator {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 480px;
  justify-content: flex-end;
}

.stock-progress {
  flex: 1;
  background-color: rgba(0, 0, 0, 0.1) !important;
  position: relative;
  overflow: hidden;
}
html[data-theme="dark"] .stock-progress {
  background-color: rgba(255, 255, 255, 0.08) !important;
}

/* 收银台结算 (Checkout) Styles */
.checkout-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.checkout-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.92rem;
}

.checkout-row span.muted {
  color: var(--color-text-muted);
}

.checkout-row.total {
  border-bottom: none;
  padding-bottom: 0;
  padding-top: 8px;
  font-size: 1.1rem;
  font-weight: 700;
}

/* 支付渠道列表 (Pay Methods Grid) */
.pay-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.pay-method-card {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background-color: rgba(0, 0, 0, 0.05);
  cursor: pointer;
  transition: all var(--transition-fast);
  gap: 16px;
  position: relative;
}
html[data-theme="light"] .pay-method-card {
  background-color: rgba(255, 255, 255, 0.5);
}

.pay-method-card:hover {
  border-color: rgba(6, 182, 212, 0.4);
  background-color: rgba(6, 182, 212, 0.03);
}

.pay-method-card.selected {
  border-color: var(--color-primary);
  background-color: rgba(6, 182, 212, 0.08);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.05);
}
html[data-theme="light"] .pay-method-card.selected {
  background-color: rgba(13, 148, 136, 0.05);
}

.pay-method-radio {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.pay-method-card.selected .pay-method-radio {
  border-color: var(--color-primary);
}

.pay-method-card.selected .pay-method-radio::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
  display: block;
}

.pay-method-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pay-method-icon svg {
  width: 28px;
  height: 28px;
}

.pay-method-info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.pay-method-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
}

.pay-method-desc {
  font-size: 0.825rem;
  color: var(--color-text-muted);
}

/* --- 10. 时间线与状态徽章 UI 优化 (Timeline & Badges) --- */
.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 20px;
  margin: 10px 0;
  text-align: left;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 31px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
  z-index: 1;
}

.timeline-item {
  display: flex;
  gap: 20px;
  position: relative;
  margin-bottom: 28px;
  z-index: 2;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--bg-surface-solid);
  border: 2px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  box-shadow: var(--card-glow);
  flex-shrink: 0;
}

.timeline-item.active .timeline-dot {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--white);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.35);
}

.timeline-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.timeline-item.active .timeline-title {
  color: var(--color-primary);
}

.timeline-desc {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-xs);
  background-color: var(--color-border);
  color: var(--color-text-muted);
  width: fit-content;
}

.status-badge.active {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(52, 211, 153, 0.15);
}

.product-card-centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 24px;
  width: 280px; /* 使卡片做小一点 */
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--card-glow);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.product-card-centered:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: var(--shadow-card), 0 12px 36px -10px rgba(6, 182, 212, 0.25);
}

.hot-fire-badge {
  position: absolute;
  top: 0;
  right: 0;
  width: 44px;
  height: 44px;
  background-color: #ffe3e3;
  border-radius: 0 var(--radius-md) 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  z-index: 5;
}
html[data-theme="dark"] .hot-fire-badge {
  background-color: rgba(239, 68, 68, 0.2);
}

.product-logo-container {
  position: relative;
  margin-bottom: 24px;
}

.product-logo-box {
  width: 76px;
  height: 76px;
  border-radius: 18px;
  background-color: #f1f3f5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.05);
}
html[data-theme="dark"] .product-logo-box {
  background-color: #161e31;
  border-color: rgba(255, 255, 255, 0.05);
  box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.3);
}

.logo-text-primary {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 800;
  color: #1e293b;
  line-height: 1.2;
}
html[data-theme="dark"] .logo-text-primary {
  color: #f1f5f9;
}

.logo-text-secondary {
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  color: #64748b;
}
html[data-theme="dark"] .logo-text-secondary {
  color: var(--color-primary);
}

.product-logo-sub-badge {
  position: absolute;
  bottom: -4px;
  right: -4px;
  background-color: #f97316;
  color: var(--white);
  font-size: 0.6rem;
  font-weight: 900;
  padding: 2px 4px;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  box-shadow: 0 2px 4px rgba(249, 115, 22, 0.3);
}

.product-card-title {
  font-family: var(--font-title);
  font-size: 1.55rem;
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.product-sales-count {
  font-size: 0.84rem;
  color: #f43f5e;
  font-weight: 700;
  margin-bottom: 20px;
}
html[data-theme="dark"] .product-sales-count {
  color: #fb7185;
}

.product-card-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 24px;
  min-height: 48px;
  max-width: 240px;
}

.product-buyer-tip {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  font-weight: 500;
  background-color: rgba(0, 0, 0, 0.04);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}
html[data-theme="dark"] .product-buyer-tip {
  background-color: rgba(255, 255, 255, 0.02);
}

.product-card-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 28px;
  color: #f43f5e;
}
html[data-theme="dark"] .product-card-price {
  color: #fb7185;
}

.price-currency {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 800;
  margin-right: 2px;
}

.price-val {
  font-family: var(--font-title);
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1;
}

.price-period {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-left: 4px;
}

/* --- 12. 用户下拉菜单 UI 优化 (Header Dropdown) --- */
.user-dropdown-container {
  position: relative;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}

.user-name-trigger {
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--color-primary);
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background-color: rgba(6, 182, 212, 0.05);
  border: 1px solid rgba(6, 182, 212, 0.15);
  transition: all var(--transition-fast);
}
html[data-theme="light"] .user-name-trigger {
  background-color: rgba(13, 148, 136, 0.05);
  border-color: rgba(13, 148, 136, 0.15);
}

.user-dropdown-container:hover .user-name-trigger {
  background: var(--primary-gradient);
  color: var(--white);
  border-color: transparent;
  box-shadow: 0 4px 10px rgba(6, 182, 212, 0.2);
}

.user-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background-color: var(--bg-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-width: 140px;
  box-shadow: var(--shadow-card);
  padding: 6px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.user-dropdown-container:hover .user-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--color-text);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  text-align: left;
  display: block;
}

.dropdown-item:hover {
  background-color: rgba(6, 182, 212, 0.1);
  color: var(--color-primary);
}
html[data-theme="light"] .dropdown-item:hover {
  background-color: rgba(13, 148, 136, 0.08);
}

.dropdown-item.logout-item:hover {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

/* --- 13. 辅助条款文档布局 UI 优化 (Docs Layout) --- */
.docs-layout {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  margin-top: 16px;
  text-align: left;
}

.docs-sidebar {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 220px;
  flex-shrink: 0;
  background-color: var(--bg-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px;
  box-shadow: var(--shadow-card);
}

.docs-menu-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.docs-menu-btn:hover {
  background-color: rgba(6, 182, 212, 0.08);
  color: var(--color-primary);
}
html[data-theme="light"] .docs-menu-btn:hover {
  background-color: rgba(13, 148, 136, 0.06);
}

.docs-menu-btn.active {
  background: var(--primary-gradient);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
}

.docs-content {
  flex-grow: 1;
  background-color: var(--bg-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-card);
  min-height: 480px;
}

/* 移动端与平板响应式自适应 */
@media (max-width: 860px) {
  .docs-layout {
    flex-direction: column;
    gap: 20px;
  }
  .docs-sidebar {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px;
  }
  .docs-menu-btn {
    width: auto;
    flex-grow: 1;
    text-align: center;
    padding: 8px 12px;
    font-size: 0.82rem;
  }
  .docs-content {
    padding: 24px;
    min-height: auto;
  }
}