.status-badge{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--card-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-light);
}
.status-queued{ color: #946200; background: rgba(245, 158, 11, .12); border-color: rgba(245, 158, 11, .35); }
.status-delivered{ color: #0f766e; background: rgba(16, 185, 129, .12); border-color: rgba(16, 185, 129, .35); }
.status-failed{ color: #b91c1c; background: rgba(239, 68, 68, .12); border-color: rgba(239, 68, 68, .35); }
.status-processing{ color: #1d4ed8; background: rgba(59, 130, 246, .12); border-color: rgba(59, 130, 246, .35); }
:root{
  /* 背景和表面 */
  --surface: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 20%, #f1f5f9 100%);
  --surface-overlay: linear-gradient(135deg, rgba(248, 250, 252, 0.8) 0%, rgba(241, 245, 249, 0.9) 100%);
  --surface-pattern: radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.02) 0%, transparent 50%);
  
  /* 卡片和容器 */
  --card: rgba(255, 255, 255, 0.85);
  --card-hover: rgba(255, 255, 255, 0.95);
  --card-glass: rgba(255, 255, 255, 0.6);
  --card-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(248, 250, 252, 0.9) 100%);
  
  /* 主色系 */
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: rgba(59, 130, 246, 0.1);
  --primary-glass: rgba(59, 130, 246, 0.05);
  --primary-rgb: 59, 130, 246;
  --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  
  /* 状态颜色 */
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.1);
  --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.1);
  --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: rgba(239, 68, 68, 0.1);
  --danger-gradient: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  
  --info: #3b82f6;
  --info-light: rgba(59, 130, 246, 0.1);
  --info-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  
  /* 文字颜色 */
  --text: #1e293b;
  --text-light: #475569;
  --text-muted: #64748b;
  --text-secondary: #94a3b8;
  
  /* 边框 */
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --border-glass: rgba(255, 255, 255, 0.2);
  --border-focus: rgba(59, 130, 246, 0.3);
  
  /* 圆角 */
  --radius: 16px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  
  /* 阴影 */
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.15);
  --shadow-colored: 0 8px 25px rgba(59, 130, 246, 0.15);
  
  /* 动画 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --spring: cubic-bezier(0.16, 1, 0.3, 1);
}
*{
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* 允许选择文本的重要元素 */
input,
textarea,
select,
.email-text,
.email-display,
#modal-content,
.table td,
.table th,
pre,
code,
.selectable,
.custom-input,
.field-input,
.field-textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

/* 移动端触摸优化 - 防止长按选择 */
@media (max-width: 768px) {
  button,
  .btn,
  .sidebar-toggle-btn,
  .close,
  .nav-actions > *,
  .mailbox-actions > * {
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
  }
}

body{
  margin: 0;
  min-height: 100vh;
  background: var(--surface), var(--surface-pattern);
  background-attachment: fixed;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

.demo-banner{
  background: linear-gradient(90deg, #fde68a, #fca5a5);
  color: #1f2937;
  text-align: center;
  padding: 10px 14px;
  font-size: 14px;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

body::before{
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 40% 60%, rgba(16, 185, 129, 0.06) 0%, transparent 40%);
  animation: backgroundFloat 20s ease-in-out infinite;
  z-index: -1;
}

@keyframes backgroundFloat {
  0%, 100% { 
    transform: translateX(-20px) translateY(-10px) rotate(0deg); 
  }
  33% { 
    transform: translateX(20px) translateY(10px) rotate(1deg); 
  }
  66% { 
    transform: translateX(-10px) translateY(20px) rotate(-1deg); 
  }
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--card-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  max-width: 1200px; /* 头部基准宽度 */
  margin: 0 auto;
  padding: 16px 32px;
  gap: 20px;
  transition: var(--transition);
  box-shadow: var(--shadow-glass);
}

.brand{
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.025em;
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--text);
  text-decoration: none;
}

.brand span{
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.brand-icon{
  font-size: 24px;
  animation: iconPulse 2s ease-in-out infinite;
}

/* 角色徽章 */
.role-badge{ margin-left: 12px; padding: 6px 12px; border-radius: 999px; font-weight: 700; font-size: 14px; letter-spacing: .5px; }
.role-user{ color:#1e293b; background: linear-gradient(135deg,#e2e8f0,#f8fafc); border:1px solid rgba(148,163,184,.5); box-shadow: inset 0 0 0 1px rgba(255,255,255,.6); }
.role-admin{ color:#0f766e; background: linear-gradient(135deg, rgba(16,185,129,.15), rgba(6,182,212,.15)); border:1px solid rgba(16,185,129,.35); box-shadow: 0 4px 12px rgba(16,185,129,.25); }
.role-super{ color:#fff; background: linear-gradient(135deg,#6366f1,#8b5cf6); box-shadow: 0 6px 16px rgba(99,102,241,.4), inset 0 0 12px rgba(255,255,255,.2); text-shadow: 0 1px 1px rgba(0,0,0,.15); }

@keyframes iconPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}
.tagline{
  display: none;
}

.nav-actions{
  display: flex;
  gap: 12px;
  margin-left: auto;
}

.btn-ghost{
  background: transparent;
  color: var(--text-light);
  border: 1px dashed rgba(226, 232, 240, 0.6);
  box-shadow: none;
}

.btn-ghost:hover{
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0.04) 100%);
  border: 1px solid var(--primary);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.15);
  transform: translateY(-2px) scale(1.01);
}

.container{
  max-width: 1200px; /* 与头部对齐 */
  margin: 0 auto;
  padding: 24px 24px 32px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  align-items: start;
  min-height: calc(100vh - 100px);
}

.sidebar{
  position: sticky;
  top: 120px;
  background: var(--card-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-glass);
  padding: 24px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  width: auto;
  min-width: 280px;
  /* 让历史邮箱成为独立滚动容器，避免滚动串联到右侧/页面 */
  max-height: calc(100vh - 140px);
  overflow: auto;
  overscroll-behavior: contain;
  /* 更细、更柔和的滚动条（Firefox） */
  scrollbar-width: thin;
  scrollbar-color: rgba(100,116,139,.45) transparent;
  /* 防止滚动条出现/消失引发布局抖动 */
  scrollbar-gutter: stable both-edges;
}

/* 历史邮箱搜索框样式 */
.sidebar-search{ margin: 6px 0 10px; }
.sidebar-search-input{
  width: 100%;
  height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  background: var(--card-glass);
  box-shadow: var(--shadow-glass);
}
.sidebar-search-input::placeholder{ color: var(--muted2); }
.sidebar-search-input:focus{ outline:none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,.15); background: #fff; }

/* 更细、更透明的滚动条（Chromium/WebKit） */
.sidebar::-webkit-scrollbar{ width: 8px; height: 8px; }
.sidebar::-webkit-scrollbar-button{ display: none; width: 0; height: 0; }
.sidebar::-webkit-scrollbar-track{ background: transparent; }
.sidebar::-webkit-scrollbar-thumb{
  background: rgba(100,116,139,.35);
  border-radius: 999px;
  border: 2px solid rgba(255,255,255,.5);
}
.sidebar:hover::-webkit-scrollbar-thumb{ background: linear-gradient(180deg, rgba(59,130,246,.6), rgba(139,92,246,.6)); }
.sidebar::-webkit-scrollbar-thumb:hover{ background: linear-gradient(180deg, rgba(59,130,246,.8), rgba(139,92,246,.8)); }

.sidebar:hover{
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* 侧板头部布局 */
.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  position: relative;
}

.sidebar h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.sidebar-title {
  transition: var(--transition);
}

.sidebar-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.quota-display {
  font-size: 12px;
  color: var(--muted);
  background: var(--card-glass);
}

/* 超级管理员邮箱数量显示样式 */
.quota-display.admin-quota {
  color: var(--primary);
  font-weight: 600;
  border: 1px solid var(--primary);
  border-radius: 12px;
  padding: 4px 8px;
  background: rgba(var(--primary-rgb), 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  min-width: 50px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.quota-display.admin-quota::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
  opacity: 0;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* 新增：精美的加载状态动画 */
.loading-enhanced {
  position: relative;
  overflow: hidden;
}

.loading-enhanced::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* 增强的焦点状态 */
.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light), 0 4px 14px rgba(59, 130, 246, 0.15);
  transform: scale(1.01);
}

/* 微动画效果 */
.card {
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(59, 130, 246, 0.05);
}

/* 按钮图标动画 */
.btn-icon {
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn:hover .btn-icon {
  transform: scale(1.1) rotate(5deg);
}

.btn-danger:hover .btn-icon {
  transform: scale(1.1) rotate(-5deg);
}

/* 邮箱项目的hover增强 */
.mailbox-item {
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.mailbox-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.05), transparent);
  transition: var(--transition);
}

.mailbox-item:hover::before {
  left: 0;
}

.mailbox-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

/* 状态徽章增强 */
.status-badge {
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.status-badge::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition);
  transform: scale(0);
}

.status-badge:hover::before {
  opacity: 1;
  transform: scale(1);
  animation: ripple 0.6s ease-out;
}

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

.sidebar-icon {
  font-size: 20px;
  animation: iconFloat 3s ease-in-out infinite;
  transition: var(--transition);
}

@keyframes iconFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-2px); }
}

/* 侧板收起/展开按钮样式 */
.sidebar-toggle-btn {
  background: linear-gradient(135deg, var(--card) 0%, rgba(255,255,255,0.9) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  position: relative;
  overflow: hidden;
}

.sidebar-toggle-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.6s ease;
}

.sidebar-toggle-btn:hover {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  border-color: var(--primary);
  color: white;
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.sidebar-toggle-btn:hover::before {
  left: 100%;
}

.sidebar-toggle-btn:active {
  transform: scale(0.95);
}

.sidebar-toggle-btn span {
  font-size: 14px;
  font-weight: bold;
  transition: var(--transition);
  color: var(--text);
}

.sidebar-toggle-btn:hover span {
  color: white;
}

/* 侧板收起状态 */
.sidebar.collapsed {
  width: 60px;
  padding: 16px 8px;
  overflow: hidden;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
              padding 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.3s ease,
              box-shadow 0.3s ease;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, var(--card-glass) 50%, rgba(139, 92, 246, 0.05) 100%);
  border: 1px solid rgba(59, 130, 246, 0.15);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.15), 
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
  animation: sidebarPulse 4s ease-in-out infinite;
}

.sidebar.collapsed:hover {
  animation: sidebarPulse 2s ease-in-out infinite;
  transform: translateY(-1px);
}

.sidebar.collapsed .sidebar-header {
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.sidebar.collapsed h3 {
  writing-mode: horizontal-tb;
  text-orientation: initial;
  height: auto;
  margin: 0;
  justify-content: center;
  font-size: 14px;
  white-space: nowrap;
  flex: none;
}

.sidebar.collapsed .sidebar-title {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar.collapsed .sidebar-icon {
  margin: 0;
  transform: none;
  font-size: 16px;
  animation: iconGlow 3s ease-in-out infinite;
  transition: all 0.3s ease;
}

.sidebar.collapsed:hover .sidebar-icon {
  animation: iconGlow 1s ease-in-out infinite;
  transform: scale(1.1);
}

.sidebar.collapsed .sidebar-header-actions {
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.sidebar.collapsed .quota-display {
  writing-mode: horizontal-tb;
  text-orientation: initial;
  height: auto;
  width: auto;
  padding: 4px 6px;
  font-size: 10px;
  min-width: auto;
}

.sidebar.collapsed .sidebar-toggle-btn {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  box-shadow: 0 3px 15px rgba(59, 130, 246, 0.2);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(255,255,255,0.9) 100%);
  border-color: rgba(59, 130, 246, 0.3);
}

.sidebar.collapsed .sidebar-toggle-btn:hover {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  transform: scale(1.15) translateY(-3px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

.sidebar.collapsed .sidebar-toggle-btn span {
  font-size: 12px;
  font-weight: 800;
}

.sidebar.collapsed #mb-list,
.sidebar.collapsed #mb-loading {
  display: none;
}

/* 收起状态下的加载更多按钮样式 */
.sidebar.collapsed #mb-more-wrap {
  margin-top: 12px;
  text-align: center;
  padding: 0 4px;
}

.sidebar.collapsed #mb-more {
  width: 100%;
  min-height: 32px;
  padding: 6px 4px;
  font-size: 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(255,255,255,0.8) 100%);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--primary);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
}

.sidebar.collapsed #mb-more:hover {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.sidebar.collapsed #mb-more-text {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

/* 收起状态下显示简化文本 */
.sidebar.collapsed #mb-more-text::before {
  content: "更多";
  font-weight: 700;
}

.sidebar.collapsed #mb-more-text {
  font-size: 0; /* 隐藏原文本 */
}

.sidebar.collapsed #mb-more-text::before {
  font-size: 10px; /* 显示简化文本 */
  color: inherit;
}

/* 确保在任何状态下"加载更多"按钮都可见 */
.sidebar.collapsed.list-collapsed #mb-more-wrap {
  display: block !important;
  margin-top: 8px;
  padding: 0 4px;
}

.sidebar.collapsed.list-collapsed #mb-more {
  width: 100%;
  min-height: 30px;
  padding: 5px 4px;
  font-size: 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(255,255,255,0.8) 100%);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--primary);
}

/* 容器布局调整 */
.container.sidebar-collapsed .sidebar {
  width: 60px;
  min-width: 60px;
}

/* 侧板收起时的布局优化 */
.container.sidebar-collapsed .main {
  transform: translateX(-200px);
  width: calc(100% + 200px); /* 向左位移同等宽度，消除右侧空白 */
  max-width: none;
  padding-right: 200px; /* 右侧留出等同位移的内边距 */
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 确保主内容区域有平滑过渡 */
.main {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.container.sidebar-collapsed .mailbox-layout {
  grid-template-columns: 1fr 1.1fr;
  gap: 32px;
  max-width: 1400px; /* 收起后容纳左移扩展后的主列 */
  margin: 0 auto;
  padding: 0 20px;
}

.container.sidebar-collapsed .mailbox-display-section {
  min-width: 340px;
  max-width: 440px;
}

.container.sidebar-collapsed .mailbox-config-section {
  min-width: 360px;
  max-width: 420px;
}

/* 侧板收起时的邮箱显示区域优化 */
.container.sidebar-collapsed .mailbox-display-content {
  padding: 28px;
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(240,253,250,0.9) 100%);
  border-radius: var(--radius);
  border: 1px solid rgba(16, 185, 129, 0.08);
  box-shadow: 0 8px 32px rgba(16, 185, 129, 0.1);
}

.container.sidebar-collapsed .email-display {
  min-height: 80px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(248,250,252,0.6) 100%);
  border: 2px solid rgba(16, 185, 129, 0.15);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.container.sidebar-collapsed .email-display:hover {
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.15);
}

.container.sidebar-collapsed .mailbox-actions {
  gap: 10px;
  margin-top: 20px;
}

.container.sidebar-collapsed .mailbox-actions .btn {
  padding: 12px 18px;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.container.sidebar-collapsed .mailbox-actions .btn:hover {
  transform: translateY(-2px);
}

/* 侧板收起时的配置项优化 */
.container.sidebar-collapsed .config-form {
  padding: 24px;
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.8) 100%);
  border-radius: var(--radius);
  border: 1px solid rgba(59, 130, 246, 0.08);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.1);
}

.container.sidebar-collapsed .generate-action {
  margin-top: 24px;
  gap: 12px;
}

.container.sidebar-collapsed .btn-generate {
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  transform: translateY(0);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.container.sidebar-collapsed .btn-generate:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
}

/* 侧板收起时的卡片样式优化 */
.container.sidebar-collapsed .generate-card {
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(59, 130, 246, 0.1);
  background: linear-gradient(135deg, var(--card) 0%, rgba(248, 250, 252, 0.95) 100%);
}

.container.sidebar-collapsed .inbox-card {
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(16, 185, 129, 0.1);
  background: linear-gradient(135deg, var(--card) 0%, rgba(240, 253, 250, 0.95) 100%);
  transform: translateY(0);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.container.sidebar-collapsed .inbox-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(16, 185, 129, 0.15);
}

/* 侧板收起时的整体容器动画 */
.container.sidebar-collapsed {
  animation: expandLayout 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes expandLayout {
  0% {
    filter: blur(2px);
    opacity: 0.7;
    transform: scale(0.98);
  }
  50% {
    filter: blur(1px);
    opacity: 0.85;
  }
  100% {
    filter: blur(0);
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes sidebarPulse {
  0%, 100% {
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
  }
  50% {
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.25),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
  }
}

@keyframes iconGlow {
  0%, 100% {
    text-shadow: none;
  }
  50% {
    text-shadow: 0 0 8px rgba(59, 130, 246, 0.6);
  }
}

/* 侧板收起时的内容淡入效果 */
.container.sidebar-collapsed .mailbox-layout > * {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 移动端响应式调整 */
@media (max-width: 768px) {
  .sidebar {
    min-width: 260px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .sidebar.collapsed {
    width: 50px;
    padding: 12px 4px;
    animation: sidebarPulse 5s ease-in-out infinite;
  }
  
  .sidebar.collapsed:hover {
    animation: sidebarPulse 2.5s ease-in-out infinite;
  }
  
  .sidebar.collapsed h3 {
    font-size: 12px;
    height: 80px;
  }
  
  .sidebar.collapsed .quota-display {
    height: 30px;
    width: 18px;
  }
  
  .sidebar.collapsed .sidebar-toggle-btn {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(255,255,255,0.9) 100%);
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.3);
  }
  
  .sidebar.collapsed .sidebar-toggle-btn:hover {
    transform: scale(1.2) translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
  }
  
  .sidebar.collapsed .sidebar-toggle-btn span {
    font-size: 10px;
    font-weight: 800;
  }
  
  /* 移动端收起状态下的加载更多按钮 */
  .sidebar.collapsed #mb-more-wrap {
    margin-top: 8px;
    padding: 0 2px;
  }
  
  .sidebar.collapsed #mb-more {
    min-height: 28px;
    padding: 4px 2px;
    font-size: 9px;
    border-radius: 4px;
  }
  
  .sidebar.collapsed #mb-more-text {
    font-size: 0; /* 隐藏原文本 */
    line-height: 1.1;
  }
  
  .sidebar.collapsed #mb-more-text::before {
    font-size: 8px; /* 移动端显示更小的简化文本 */
    content: "+";
    font-weight: 900;
  }
  
  .container.sidebar-collapsed .sidebar {
    width: 50px;
    min-width: 50px;
  }
  
  .container.sidebar-collapsed .main {
    transform: none;
    width: 100%;
    padding-right: 0;
    margin-left: 0;
  }
  
  /* 移动端侧板收起时的布局调整 */
  .container.sidebar-collapsed .mailbox-layout {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: none;
    margin: 0;
  }
  
  .container.sidebar-collapsed .mailbox-display-section,
  .container.sidebar-collapsed .mailbox-config-section {
    min-width: auto;
    max-width: none;
  }
  
  .container.sidebar-collapsed .generate-card,
  .container.sidebar-collapsed .inbox-card {
    background: var(--card);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-glass);
  }
  
  /* 移动端：保留用于折叠/展开的小按钮（用于历史邮箱/配置区） */
  #sidebar-toggle{ display:none; } /* 仅隐藏主侧栏的开关 */
  #config-toggle{ display:inline-flex; width:28px; height:28px; }
  #mb-toggle{ display:inline-flex; }
}

/* 桌面端隐藏手机专用开关 */
@media (min-width: 769px) {
  #mb-toggle{ display:none; }
  #config-toggle{ display:none; }
}

.card-icon{
  font-size: 24px;
  margin-right: 8px;
  animation: iconSpin 4s linear infinite;
}

@keyframes iconSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.generate-card{
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
}

.inbox-card{
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(6, 182, 212, 0.05));
}
.listcard-header{
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}
.listcard-title{ 
  margin: 0; display:flex; align-items:center; gap:8px; justify-self: start;
}
.view-switch{ 
  justify-self: center; display: inline-flex; background: var(--card-glass); border:1px solid var(--border-glass); border-radius: 999px; overflow:hidden; box-shadow: var(--shadow-glass);
}
.seg-btn{
  background: transparent; border:none; padding: 8px 16px; font-weight:600; color: var(--text-light); cursor:pointer; transition: var(--transition);
}
.seg-btn[aria-pressed="true"]{
  background: var(--primary-light);
  color: var(--primary);
}
.seg-btn:hover{ background: rgba(59,130,246,0.08); color: var(--primary); }

.loading-indicator{ display:none; align-items:center; gap:8px; justify-self:end; color: var(--text-light); }
.loading-indicator.show{ display:inline-flex; }
.spinner{
  width:16px; height:16px; border:2px solid rgba(59,130,246,0.2); border-top-color: var(--primary); border-radius:50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg);} }

.placeholder-text{
  color: var(--muted2);
  font-style: italic;
}
.mailbox-item{
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  padding-left: 22px; /* 所有项目都预留图标空间 */
  margin-bottom: 6px;
  cursor: pointer;
  background: var(--card-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
  position: relative;
}

.mailbox-item.pinned{
  position: relative;
  background: linear-gradient(135deg, 
    rgba(255, 251, 235, 0.8) 0%, 
    rgba(254, 243, 199, 0.6) 100%);
  border-left: 3px solid #f59e0b;
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 
    0 2px 8px rgba(245, 158, 11, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.mailbox-item.pinned:hover{
  background: linear-gradient(135deg, 
    rgba(255, 248, 220, 0.9) 0%, 
    rgba(254, 240, 180, 0.8) 100%);
  border-left-color: #d97706;
  box-shadow: 
    0 4px 12px rgba(245, 158, 11, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transform: translateY(-1px);
}

.mailbox-item.pinned::after{
  content: '📌';
  position: absolute;
  top: 4px;
  left: 4px;
  font-size: 10px;
  color: #f59e0b;
  opacity: 0.9;
  transition: all 0.2s ease;
  text-shadow: 0 1px 2px rgba(245, 158, 11, 0.2);
  z-index: 1;
}

.mailbox-item.pinned:hover::after{
  opacity: 1;
  transform: scale(1.15);
}

.mailbox-content{
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  gap: 1px;
  margin-right: 8px;
}

.mailbox-item .mailbox-actions{
  display: flex;
  gap: 4px;
  align-items: center;
  opacity: 0;
  transition: var(--transition);
  flex-shrink: 0;
  pointer-events: none;
}

.mailbox-item:hover .mailbox-actions{
  opacity: 1 !important;
  pointer-events: auto;
}

.mailbox-item:hover .mailbox-actions .pin,
.mailbox-item:hover .mailbox-actions .del{
  pointer-events: auto;
}

.mailbox-item .mailbox-actions .pin{
  color: var(--primary);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  height: 24px;
  width: 24px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  border-radius: 6px;
  min-width: 24px;
  min-height: 24px;
  pointer-events: none;
}

.mailbox-item .mailbox-actions .pin:hover{
  background: rgba(59, 130, 246, 0.2);
  transform: scale(1.05);
}

.mailbox-item .mailbox-actions .del:hover{
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  transform: scale(1.05);
}

.mailbox-item:hover{
  background: var(--card-hover);
  border-color: var(--primary);
  transform: translateX(4px);
  box-shadow: var(--shadow);
}

.mailbox-item.selected{
  background: var(--primary-light);
  border-color: var(--primary);
}

.mailbox-item .address{
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 1px;
  font-size: 13px;
}

.mailbox-item .time{
  color: var(--muted2);
  font-size: 10px;
  opacity: 0.8;
}

.mailbox-item .mailbox-actions .del{
  opacity: 0;
  transition: var(--transition);
  height: 24px;
  width: 24px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 6px;
  min-width: 24px;
  min-height: 24px;
  pointer-events: none;
}

.mailbox-item:hover .mailbox-actions .del{
  opacity: 1 !important;
  pointer-events: auto;
}

.main{
  grid-column: 2;
  display: flex;
  flex-direction: column;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  gap: 24px;
}

.header{
  display: none;
}
.card{
  background: var(--card-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: var(--radius);
  box-shadow: var(--shadow-glass);
  padding: 24px;
  border: 1px solid var(--border-glass);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #8b5cf6, #ec4899);
}

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

.card h2{
  margin: 0 0 24px 0;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 邮箱卡片布局 */
.mailbox-layout{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mailbox-display-section{
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: space-between;
  min-height: 280px;
}

.mailbox-display-content{
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mailbox-config-section{
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 280px;
}

.section-header{
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.section-icon{
  font-size: 18px;
  opacity: 0.8;
}

.section-title{
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.email-display{
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.custom-overlay{ position:absolute; inset:0; display:flex; align-items:center; justify-content:center; gap:12px; background: rgba(255,255,255,0.75); backdrop-filter: blur(2px); padding:12px; }
.custom-input{ min-width:280px; height:44px; padding:10px 14px; border:1px solid var(--border-glass); border-radius: var(--radius-sm); background: var(--card-glass); box-shadow: var(--shadow-glass); font-size:14px; }
.custom-input::placeholder{ color: var(--muted2); }
.custom-input:focus{ outline:none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); background:#fff; }
/* 覆盖层内"创建"按钮：强制水平/垂直居中 */
.custom-overlay .btn{ height:44px; padding:0 16px; justify-content:center; align-items:center; }

/* 让切换自定义按钮与随机按钮同样大小 */
.generate-action{ display:flex; gap:12px; align-items:center; flex-wrap:wrap; }
.generate-action .btn{ height:52px; padding:0 20px; font-size:16px; border-radius: var(--radius-sm); flex:1 1 220px; justify-content:center; text-align:center; }

.email-display.has-email{
  border-style: solid;
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
  animation: emailGenerated 0.6s ease-out;
}

@keyframes emailGenerated {
  0% { 
    transform: scale(0.95);
    opacity: 0;
  }
  50% { 
    transform: scale(1.05);
    border-color: var(--success);
  }
  100% { 
    transform: scale(1);
    opacity: 1;
  }
}

.mailbox-actions{
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 12px;
  justify-content: center;
  align-items: stretch;
  margin-top: 0;
  opacity: 1;
  transition: var(--transition);
}

.mailbox-actions .btn{
  width: 100%;
  min-width: auto;
  height: 52px;
  font-size: 14px;
  font-weight: 600;
  justify-content: center;
  white-space: nowrap;
}

.mailbox-actions .btn-secondary{
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--primary);
  color: var(--primary);
}

/* keep selectors grouped for specificity, no extra rules here */

.mailbox-actions .btn-secondary:hover{
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.mailbox-actions .btn-danger{
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: var(--danger);
}

.mailbox-actions .btn-danger:hover{
  background: var(--danger);
  color: white;
  transform: translateY(-2px);
}

.mailbox-actions .btn-ghost{
  background: rgba(71, 85, 105, 0.1);
  color: var(--text-light);
  border-color: var(--muted);
}

.mailbox-actions .btn-ghost:hover{
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.config-form{
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}

.config-item[style*="display: none"] + .config-item { margin-top: 0; }

.config-item{
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-label{
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-light);
  font-size: 14px;
}

.label-icon{
  font-size: 16px;
  opacity: 0.8;
}

.config-select{
  width: 100%;
}

/* 访客模式禁用下拉时的样式 */
select:disabled{
  opacity: .7;
  cursor: not-allowed;
}

.range-container{
  display: flex;
  align-items: center;
  gap: 16px;
}

.range{
  flex: 1;
}

.range-display{
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 60px;
  background: var(--primary-light);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.len-value{
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
}

.len-unit{
  color: var(--primary);
  font-size: 12px;
  opacity: 0.8;
}

.generate-action{
  margin-top: auto;
}

.btn-generate{
  width: 100%;
  height: 52px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(241, 245, 249, 0.9) 100%);
  border: 1px solid rgba(203, 213, 225, 0.7);
  font-size: 16px;
  font-weight: 700;
  padding: 0 24px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  justify-content: center;
  color: var(--text);
}

.btn-generate:hover{
  transform: translateY(-2px);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(241, 245, 249, 0.95) 100%);
  border-color: rgba(148, 163, 184, 0.6);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.btn-generate:disabled{
  opacity: 0.7;
  transform: none;
  cursor: not-allowed;
}

.email-display::before{
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(59, 130, 246, 0.05), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.btn{
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.8) 100%);
  color: var(--text);
  border: 1px solid rgba(226, 232, 240, 0.6);
  border-radius: 12px;
  padding: 14px 24px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn::before{
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: all 0.6s ease;
}

.btn::after{
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%, rgba(255, 255, 255, 0.05) 100%);
  border-radius: inherit;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.btn:hover{
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  border-color: rgba(226, 232, 240, 0.8);
  transform: translateY(-3px) scale(1.02);
}

.btn:hover::before{
  left: 100%;
}

.btn:active{
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.btn-danger{
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-danger:hover{
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* 主要按钮样式 - 保持浅灰但增加微妙区别 */
.btn-primary{
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(241, 245, 249, 0.9) 100%);
  border: 1px solid rgba(203, 213, 225, 0.7);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.btn-primary:hover{
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(241, 245, 249, 0.95) 100%);
  border-color: rgba(148, 163, 184, 0.6);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}
.btn-secondary{
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(248, 250, 252, 0.9) 100%);
  color: var(--text);
  border: 1px solid rgba(226, 232, 240, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  -webkit-backdrop-filter: blur(16px);
}

.btn-secondary:hover{
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.98) 100%);
  border-color: rgba(59, 130, 246, 0.3);
  color: var(--primary);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transform: translateY(-2px) scale(1.01);
}

.btn-sm{
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  height: 32px;
  gap: 4px;
}

.btn-group{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.list{
  display: flex;
  flex-direction: column;
  gap: 6px;
  /* 防止内部卡片溢出重叠 */
  overflow: visible;
}

.pager{
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.pager .btn{ min-width: 90px; }
.pager .muted{ color: var(--muted); font-size: 13px; }

.email-item{
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 10px 12px;
  background: var(--card-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-glass);
  transition: var(--transition);
  position: relative;
  z-index: 0;
  overflow: hidden;
}
.email-item{ display:grid; grid-template-columns: 1fr auto; gap: 8px 10px; }
.email-item .email-actions{ grid-column: 2; align-self: center; }
.email-item .email-content{ grid-column: 1 / span 1; }

.email-item::before{
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), #8b5cf6);
  opacity: 0;
  transition: var(--transition);
}

.email-item:hover::before{
  opacity: 1;
}

.email-item:hover{
  /* 去除向上位移，避免与上一条重叠 */
  transform: none;
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
  z-index: 2;
}

.email-item.clickable{
  cursor: pointer;
}

.email-meta{  
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
}
.email-meta{ /* 统一左对齐布局：发件人标签/发件人内容/时间 */
  display: grid; 
  grid-template-columns: 1fr auto; /* 左侧内容自适应，右侧时间固定自动宽度 */
  gap: 10px;
  align-items: center;
}
.email-meta .meta-from{ 
  display: flex; 
  align-items: center; 
  gap: 6px; 
  min-width: 0; /* 允许收缩 */
  overflow: hidden; /* 防止内容溢出 */
}
.email-meta .meta-label{ 
  font-size: 12px; 
  color: var(--text-light); 
  background: var(--card-glass); 
  border: 1px solid var(--border-glass); 
  border-radius: 999px; 
  padding: 2px 8px;
  white-space: nowrap;
  flex-shrink: 0; /* 标签不收缩 */
}
.email-meta .meta-from-text{ 
  color: var(--text); 
  font-weight: 600; 
  white-space: nowrap; 
  overflow: hidden; 
  text-overflow: ellipsis;
  min-width: 0; /* 允许收缩 */
}
.email-time{
  color: var(--muted2);
  font-size: 0.85em;
  font-weight: 500;
  justify-self: end; /* 时间右对齐 */
  text-align: right;
  white-space: nowrap; /* 防止时间换行 */
}

.email-actions{
  display: flex;
  gap: 8px;
  opacity: 0;
  transition: var(--transition);
}

.email-item:hover .email-actions{ opacity: 1; }

.email-sender{
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.sender-icon, .time-icon, .subject-icon{
  font-size: 14px;
  opacity: 0.8;
}

.sender-name{
  color: var(--text);
  font-size: 14px;
}

.email-content{
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 8px;
}

.email-main{
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.email-subject{
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.email-preview{
  color: var(--text-light);
  font-size: 13px;
  line-height: 1.4;
  display: block; /* 配合左对齐布局，避免高度不一导致错位 */
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* 列表三行布局：发件人/主题/内容 - 与meta区域对齐 */
.email-line{ 
  display: grid; 
  grid-template-columns: 52px 1fr; /* 与email-meta的第一列和第二列宽度对应 */
  align-items: center; 
  gap: 8px; 
  margin: 1px 0; 
  min-width: 0; 
}
.label-chip{ 
  width: 52px; 
  justify-self: start; 
  text-align: center; 
  padding: 1px 6px; 
  font-size: 11px; 
  color: var(--text-light); 
  background: var(--card-glass); 
  border: 1px solid var(--border-glass); 
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}
.value-text{ 
  min-width: 0; 
  overflow: hidden; 
  text-overflow: ellipsis;
  word-break: break-word; /* 允许长单词换行 */
}
.value-text.from{ color: var(--text); font-weight: 600; }
.value-text.subject{ 
  color: var(--text); 
  font-weight: 700; 
  white-space: nowrap; /* 主题保持单行 */
}
/* 内容预览允许多行显示 */
.email-preview.value-text{
  white-space: normal;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2; /* 最多显示2行 */
  -webkit-box-orient: vertical;
  overflow: hidden;
}


/* Modal */
.modal{
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: modalFadeIn 0.3s ease-out;
}

.modal.show{
  display: flex;
}

.modal-card{
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  width: min(90vw, 900px);
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transform: scale(0.9);
  animation: modalSlideIn 0.3s ease-out forwards;
}

.modal-header{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-light);
  font-weight: 700;
  font-size: 18px;
  background: linear-gradient(135deg, rgba(59,130,246,.14), rgba(139,92,246,.14));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text);
}

.modal-body{
  padding: 32px;
  overflow-y: auto;
  max-height: calc(85vh - 80px);
}

/* 发件表单 */
.compose-form{
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field-group{
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label{
  font-weight: 600;
  color: var(--text-light);
  font-size: 14px;
}

.field-input,
.field-textarea{
  width: 100%;
  background: var(--card-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text);
  box-shadow: var(--shadow-glass);
}

.field-input::placeholder,
.field-textarea::placeholder{
  color: var(--muted2);
}

.field-input:focus,
.field-textarea:focus{
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.field-textarea{
  min-height: 160px;
  resize: vertical;
}

.field-hint{
  font-size: 12px;
  color: var(--muted2);
}

.compose-actions{
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.close{
  cursor: pointer;
  font-size: 24px;
  border: none;
  background: transparent;
  color: var(--text);
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.close:hover{
  background: rgba(0, 0, 0, 0.06);
  transform: scale(1.1);
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalSlideIn {
  from { transform: scale(0.9) translateY(20px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

/* 邮件详情优化样式 */
.email-detail-container{
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 100%;
}

.email-meta-card{
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.meta-item{
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  padding: 8px 0;
}

.meta-icon{
  font-size: 18px;
  width: 24px;
  text-align: center;
  opacity: 0.8;
}

.meta-label{
  font-weight: 600;
  color: var(--text-light);
  min-width: 60px;
  font-size: 13px;
}

.meta-value{
  color: var(--text);
  font-weight: 500;
  flex: 1;
  word-break: break-all;
  background: rgba(255, 255, 255, 0.5);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.email-actions-bar{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 16px;
  background: var(--card-glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius);
  border: 1px solid var(--border-glass);
}

/* 轻量信息条：与全站玻璃/圆角风格一致 */
.email-meta-inline{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 10px;
  padding: 10px 12px;
  margin: 6px 0 12px 0;
  background: var(--card-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-glass);
}
.email-meta-inline span{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--border-light);
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
}

.email-actions-bar .btn{
  min-width: 120px;
  height: 40px;
}

.email-content-area{
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  position: relative;
}

.email-content-area::before{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #8b5cf6, #ec4899);
}

.email-content-text{
  padding: 24px;
  line-height: 1.7;
  font-size: 15px;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.code-highlight{
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(6, 182, 212, 0.1));
  border: 2px solid var(--success);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 0 0 20px 0;
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  color: var(--success);
  position: relative;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.code-highlight::before{
  content: '🔐 验证码';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--success);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.email-content-text h1,
.email-content-text h2,
.email-content-text h3{
  margin: 24px 0 16px 0;
  color: var(--text);
  font-weight: 700;
}

.email-content-text p{
  margin: 12px 0;
}

.email-content-text a{
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 130, 246, 0.3);
  transition: var(--transition);
}

.email-content-text a:hover{
  border-bottom-color: var(--primary);
  background: var(--primary-light);
}

.email-content-text code{
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  font-family: 'SF Mono', Monaco, monospace;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.email-content-text pre{
  background: var(--card-glass);
  padding: 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  border: 1px solid var(--border);
  margin: 20px 0;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.email-content-text blockquote{
  border-left: 4px solid var(--primary);
  padding-left: 20px;
  margin: 20px 0;
  font-style: italic;
  color: var(--text-light);
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.email-no-content{
  text-align: center;
  color: var(--muted2);
  font-style: italic;
  padding: 60px 20px;
  font-size: 16px;
  background: var(--card-glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius);
  margin: 20px;
}

/* 确认对话框样式 */
.confirm-card{
  max-width: 480px;
  width: 90vw;
}

.confirm-header{
  background: linear-gradient(135deg, var(--danger), #dc2626);
  color: white;
}

.confirm-body{
  text-align: center;
  padding: 32px 24px;
}

.confirm-message{
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 32px;
  padding: 16px;
  background: var(--card-glass);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.confirm-actions{
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.confirm-actions .btn{
  min-width: 120px;
  justify-content: center;
}

/* footer */
.footer{
  position: static; /* 避免覆盖内容，改为正常文档流 */
  margin: 24px auto 12px;
  padding: 6px 12px;
  color: var(--muted2);
  font-size: 14px;
  text-align: center;
  pointer-events: none;
  font-weight: 500;
  opacity: 0.8;
}

/* controls */
.control-row{
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
  margin-top: 20px;
  padding: 20px;
  background: var(--card-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.control-row label{
  font-weight: 600;
  color: var(--text-light);
  font-size: 14px;
  white-space: nowrap;
}

.control-group{
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.control-group label{
  margin: 0;
}

.len-display{
  color: var(--primary);
  font-weight: 700;
  background: var(--primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
}

.btn-icon{
  font-size: 16px;
  transition: var(--transition);
}

.btn:hover .btn-icon{
  transform: scale(1.2);
}

.mailbox-actions .btn-icon{
  font-size: 18px;
}

.mailbox-actions .btn:hover .btn-icon{
  transform: scale(1.3) rotate(5deg);
}

.modal-icon{
  font-size: 20px;
  margin-right: 8px;
}

.select{
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: var(--card-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  height: 44px;
  line-height: 20px;
  color: var(--text);
  min-width: 200px;
  box-shadow: var(--shadow-glass);
  transition: var(--transition);
  font-weight: 500;
}

.select:focus{
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  transform: translateY(-1px);
}

/* 更显眼的用户名长度滑块 */
.range{
  width: 100%;
  height: 10px;
  appearance: none;
  -webkit-appearance: none;
  background: linear-gradient(to right, var(--primary) 0%, var(--border-light) 0%);
  border-radius: 9999px;
  outline: none;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.06);
  transition: background 0.2s ease;
}

/* WebKit 轨道（透明以便使用 input 本身的背景渐变）*/
.range::-webkit-slider-runnable-track{
  height: 10px;
  background: transparent;
  border-radius: 9999px;
}

.range::-webkit-slider-thumb{
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(59,130,246,0.35), 0 0 0 3px #fff;
  border: 1px solid rgba(59,130,246,0.4);
  transition: transform .15s ease;
  /* 垂直居中：拇指比轨道高 (22-10)/2 = 6px */
  margin-top: -6px;
}

.range::-webkit-slider-thumb:hover{
  transform: scale(1.06);
}

.range::-moz-range-thumb{
  width: 22px;
  height: 22px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: 1px solid rgba(59,130,246,0.4);
  box-shadow: 0 4px 10px rgba(59,130,246,0.35), 0 0 0 3px #fff;
}

/* Firefox 轨道对齐 */
.range::-moz-range-track{
  height: 10px;
  background: transparent;
  border: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container{
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 12px 12px 20px;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
  }
  
  .sidebar{
    position: relative;
    top: auto;
    max-height: none;
    overflow: visible;
    overscroll-behavior: auto;
  }
  
  .topbar{
    padding: 12px 20px;
  }
  /* 顶栏：移动端仅显示图标 */
  .brand-text{ display:none; }
  .nav-actions .btn .btn-text{ display:none; }
  .nav-actions .btn{ padding-left: 10px; padding-right: 10px; }
  
  .card{ padding: 16px; }
  
  /* 邮箱布局响应式 */
  .mailbox-layout{
    grid-template-columns: 1fr;
    gap: 24px;
  }
  /* 主区域在移动端占据第一列，避免残留第二列引起的水平滚动 */
  .main{ grid-column: 1; }

  /* 配置区默认折叠，点击标题展开 */
  .mailbox-config-section.collapsed .config-form{ display:none; }
  .mailbox-config-section .section-header{ cursor: pointer; }

  /* 历史邮箱列表默认折叠（侧栏未完全收起时） */
  .sidebar.list-collapsed #mb-list,
  .sidebar.list-collapsed #mb-loading { display:none; }
  
  /* 移动端列表折叠时仍显示加载更多按钮 */
  .sidebar.list-collapsed #mb-more-wrap { 
    display: block !important;
    margin-top: 8px;
    text-align: center;
  }
  
  .sidebar.list-collapsed #mb-more {
    width: 100%;
    padding: 8px 12px;
    font-size: 12px;
    border-radius: 8px;
    background: var(--primary-light);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--primary);
  }
  .sidebar .sidebar-header{ cursor: pointer; }
  
  .mailbox-display-section,
  .mailbox-config-section{
    min-height: auto;
  }
  
  .mailbox-actions{
    display: grid !important;
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 8px;
  }
  
  .range-container{
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .range-display{
    justify-content: center;
    min-width: auto;
  }
  
  .control-row{
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .btn-group{
    flex-direction: column;
  }
  /* 移动端常显列表操作按钮，避免悬停触发不便 */
  .email-item .email-actions{ opacity: 1; }
  
  /* Toast 响应式规则已随模板迁移 */
  
  .modal{
    padding: 12px;
  }
  
  .modal-header{
    padding: 16px 20px;
  }
  
  .modal-body{
    padding: 20px;
  }
  
  /* 邮件详情响应式 */
  .email-meta-card{
    padding: 16px;
    gap: 12px;
  }
  
  .meta-item{
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 6px 0;
  }
  
  .meta-label{
    font-size: 12px;
    min-width: auto;
  }
  
  .meta-value{
    width: 100%;
    padding: 8px 12px;
  }
  
  .email-actions-bar{
    flex-direction: column;
    gap: 8px;
  }
  
  .email-actions-bar .btn{
    width: 100%;
    min-width: auto;
    justify-content: center;
  }
  
  .email-content-text{
    padding: 16px;
  }
  
  .code-highlight{
    font-size: 18px;
    padding: 12px 16px;
  }
  
  /* 移动端置顶功能优化 */
  .mailbox-item.pinned{
    border-left-width: 2px; /* 移动端减小边框宽度 */
  }
  
  .mailbox-item.pinned::after{
    top: 3px;
    left: 3px;
    font-size: 9px;
  }
  
  .mailbox-actions{
    gap: 4px;
  }
  
  .mailbox-item .mailbox-actions .pin,
  .mailbox-item .mailbox-actions .del{
    height: 24px;
    width: 24px;
    font-size: 11px;
  }
  
  .mailbox-item{
    padding: 8px 12px;
    padding-left: 20px; /* 移动端所有项目统一左边距 */
    margin-bottom: 6px;
  }
  
  .mailbox-item .address{
    font-size: 13px;
    margin-bottom: 1px;
  }
  
  .mailbox-item .time{
    font-size: 10px;
  }
}

/* 横屏优化：当设备较矮（≤480px 高）并且较窄（≤900px 宽）时应用 */
@media (max-width: 900px) and (max-height: 480px) and (orientation: landscape) {
  .topbar{ padding: 8px 12px; }
  .container{
    grid-template-columns: 60px 1fr; /* 保留窄侧栏使历史邮箱横向出现 */
    gap: 12px;
    padding: 8px 10px 12px;
  }
  .sidebar{ display: block; width: 60px; min-width: 60px; }
  .container.sidebar-collapsed .sidebar{ width: 60px; min-width: 60px; }
  .sidebar.collapsed{ width: 60px; }
  .main{ grid-column: 2; }
  .card{ padding: 12px; }
  .mailbox-layout{ grid-template-columns: 1fr 1fr; gap: 12px; }
  .mailbox-actions .btn{ height: 44px; font-size: 13px; }
  .email-display{ padding: 12px; font-size: 14px; }
  .list-viewport{ max-height: calc(100vh - 260px); overflow: auto; }
}

/* mailboxes 页面搜索条样式 */
.page-mailboxes .toolbar{ display:flex; justify-content:center; margin-bottom:12px; }
.searchbar{ display:flex; align-items:center; gap:8px; background: var(--card-glass); border:1px solid var(--border-glass); padding:8px 10px; border-radius: 999px; box-shadow: var(--shadow-glass); width: min(720px, 100%); }
.search-input{ flex:1; border:none; background: transparent; outline: none; padding: 6px 8px; font-size:14px; color: var(--text); }
.search-input::placeholder{ color: var(--muted2); }
.page-mailboxes .btn-sm{ height:36px; }