* {
  box-sizing: border-box;
}

:root {
  --r: 2px;
  --blue: #2563eb;
  --blue-bg: #eff6ff;
  --blue-border: #93c5fd;

  /* Checkbox 统一尺寸 */
  --cb-default-size: 20px;
  --cb-msg-size: 15px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f5f7fb;
  color: #1f2937;
}

.hidden {
  display: none !important;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}

.topbar-left h1 {
  margin: 0;
  font-size: 22px;
}

.sub {
  margin-top: 4px;
  color: #6b7280;
  font-size: 13px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.welcome {
  color: #374151;
  font-size: 14px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  padding: 10px 16px 0;
}

.stat-card {
  background: #fff;
  border-radius: var(--r);
  padding: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.stat-num {
  font-size: 24px;
  font-weight: 700;
}

.stat-label {
  margin-top: 6px;
  color: #6b7280;
  font-size: 13px;
}

.toolbar {
  padding: 10px 16px;
}

.toolbar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  background: #fff;
  padding: 8px;
  border-radius: var(--r);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.toolbar-row + .toolbar-row {
  margin-top: 10px;
}

.toolbar input,
.toolbar select,
.panel input,
.panel select {
  height: 34px;
  padding: 0 12px;
  border: 1px solid #d1d5db;
  border-radius: var(--r);
  background: #fff;
  outline: none;
}

.toolbar input,
.toolbar select {
  min-width: 20px;
}

.panel input,
.panel select {
  width: 100%;
  margin-bottom: 10px;
}

#q {
  width: 220px;
  min-width: 220px;
}

#from {
  width: 140px;
  min-width: 140px;
}

#type {
  width: 110px;
  min-width: 110px;
}

.toolbar input:focus,
.toolbar select:focus,
.panel input:focus,
.panel select:focus {
  border-color: #3b82f6;
}

.checkbox-wrap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #374151;
  font-size: 14px;
  margin-left: 0;
}

.compact-gap {
  margin-left: 0;
  padding-left: 0;
}

main {
  padding: 0 16px 16px;
}

.message-list {
  display: grid;
  gap: 8px;
}

.message-card {
  background: #fff;
  border-radius: var(--r);
  padding: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  border-left: 4px solid transparent;
}

.message-card.unread {
  border-left-color: #3b82f6;
}

.message-card.read {
  opacity: 0.92;
}

.message-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.message-top-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.msg-check-wrap {
  display: inline-flex;
  align-items: center;
}

.message-from {
  font-weight: 700;
  font-size: 15px;
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #6b7280;
  font-size: 12px;
}

.type-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--r);
  font-size: 12px;
  line-height: 20px;
}

.type-code {
  background: #dbeafe;
  color: #1d4ed8;
}
.type-bank {
  background: #dcfce7;
  color: #166534;
}
.type-express {
  background: #fef3c7;
  color: #92400e;
}
.type-promo {
  background: #fce7f3;
  color: #9d174d;
}
.type-normal {
  background: #e5e7eb;
  color: #374151;
}
.type-travel {
  background: #ede9fe;
  color: #6d28d9;
}
.type-job {
  background: #cffafe;
  color: #155e75;
}

.message-title {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
}

.message-content {
  margin-top: 6px;
  color: #374151;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-receive-time {
  margin-top: 4px;
  color: #6b7280;
  font-size: 12px;
}

.code-highlight {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--r);
  background: #fee2e2;
  color: #b91c1c;
  font-weight: 700;
  border: 1px solid #fecaca;
}

.message-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.btn {
  height: 32px;
  border: none;
  border-radius: var(--r);
  padding: 0 10px;
  cursor: pointer;
  font-size: 13px;
}

.btn.ghost {
  background: #eef2f7;
  color: #374151;
}
.btn.primary {
  background: #2563eb;
  color: #fff;
}
.btn.primary:hover {
  background: #1d4ed8;
}
.btn.danger {
  background: #ef4444;
  color: #fff;
}
.btn.refresh {
  background: #2563eb;
  color: #fff;
}

.empty {
  background: #fff;
  border-radius: var(--r);
  padding: 40px 20px;
  text-align: center;
  color: #6b7280;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(17, 24, 39, 0.92);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--r);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
  z-index: 1000;
}

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

.modal {
  position: fixed;
  inset: 0;
  z-index: 999;
}

.modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

.modal-content {
  position: relative;
  width: min(900px, calc(100vw - 24px));
  max-height: calc(100vh - 40px);
  overflow: auto;
  margin: 20px auto;
  background: #fff;
  border-radius: var(--r);
  padding: 0;
  z-index: 2;
}

.modal-header {
  padding: 16px 18px;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 18px;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.detail-grid .span2 {
  grid-column: span 2;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #f8fafc;
  padding: 12px;
  border-radius: var(--r);
  margin: 8px 0 0;
}

.admin-grid,
.admin-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-grid {
  gap: 16px;
  padding: 16px 24px 0;
}

/* 兼容 admin.html 中使用的 admin-grid-2 */
.admin-grid-2 {
  gap: 12px;
  padding: 16px 24px 0;
}

.panel {
  background: #fff;
  border-radius: var(--r);
  padding: 18px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  margin: 16px 24px 0;
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 18px;
}

.admin-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #eef2f7;
}

.admin-item:last-child {
  border-bottom: none;
}

.admin-inline-meta {
  color: #6b7280;
  font-size: 13px;
  margin-left: 6px;
}

.admin-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.admin-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.stat-btn {
  border: 1px solid #e5e7eb;
  cursor: pointer;
  text-align: left;
}
.stat-btn:hover {
  background: #f8fafc;
}
.stat-btn.active {
  border-color: var(--blue-border);
  background: var(--blue-bg);
}

/* 0) 兜底：所有 checkbox 默认 20 */
input[type="checkbox"] {
  width: var(--cb-default-size);
  height: var(--cb-default-size);
  margin: 0;
  vertical-align: middle;
  transform: none;
}

/* 1) 前端工具栏“全选” checkbox = 20（显式声明） */
#batchToolbar #selectAll {
  width: var(--cb-default-size);
  height: var(--cb-default-size);
}

/* 2) 消息发信人前 checkbox = 10 */
#messageList .msg-check,
#messageList .msg-check-wrap input[type="checkbox"] {
  width: var(--cb-msg-size);
  height: var(--cb-msg-size);
}

/* 3) 后台“用户可见通道” checkbox = 20，并保持在名称前 */
#permChannels {
  width: 100%;
}

#permChannels label,
.channel-check-label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
  flex-wrap: nowrap;
}

#permChannels label {
  width: 100%;
}

#permChannels label > input.perm-channel-item[type="checkbox"] {
  order: 0;
  flex: 0 0 auto;
  margin-top: 2px;
  width: var(--cb-default-size);
  height: var(--cb-default-size);
}

#permChannels label .channel-name,
.channel-check-label .channel-name {
  flex: 1 1 auto;
  min-width: 0;
  white-space: normal;
  word-break: break-word;
  line-height: 1.4;
}

#permChannels label .channel-name {
  order: 1;
}

#permChannels label .channel-meta {
  order: 2;
  flex: 0 0 auto;
  white-space: nowrap;
  color: #666;
  font-size: 12px;
}

/* toolbar-mini 基本布局 */
.toolbar-mini {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 消息通道列表顶部 checkbox 样式，参照 #permChannels */
.channel-check-label {
  margin: 0;
}

.channel-check-label > input[type="checkbox"] {
  flex: 0 0 auto;
  margin-top: 2px;
  width: var(--cb-default-size);
  height: var(--cb-default-size);
}

@media (max-width: 768px) {
  .stats {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .message-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .detail-grid .span2 {
    grid-column: span 1;
  }

  .admin-grid,
  .admin-grid-2 {
    grid-template-columns: 1fr;
  }

  .panel {
    margin: 16px;
  }

  main,
  .toolbar,
  .stats,
  .admin-grid,
  .admin-grid-2 {
    padding-left: 16px;
    padding-right: 16px;
  }

  .admin-item {
    flex-direction: column;
    align-items: flex-start;
  }

  #q,
  #from,
  #type {
    width: 100%;
    min-width: 0;
  }
}