/* ============ 基础 ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #2f6fed;
  --primary-dark: #1e55c0;
  --primary-light: #eaf1fe;
  --danger: #e5484d;
  --warn: #f5a623;
  --success: #30a46c;
  --gray: #8b949e;
  --gray-light: #f5f6f8;
  --border: #e3e6ea;
  --text: #24292f;
  --text-light: #6b7280;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
}
html, body { height: 100%; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: #f0f2f5;
  font-size: 14px;
}
.hidden { display: none !important; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border: 1px solid var(--border); border-radius: var(--radius);
  background: #fff; color: var(--text); cursor: pointer; font-size: 13px;
  transition: all .15s; white-space: nowrap; line-height: 1.4;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #278f5d; color: #fff; }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--text-light); }
.btn-ghost:hover { background: var(--gray-light); color: var(--text); }

/* ============ 布局 ============ */
#main-view { display: flex; height: 100vh; }
#sidebar {
  width: 225px; background: #fff; border-right: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 16px; border-bottom: 1px solid var(--border);
  font-weight: 700; font-size: 16px;
}
.brand-icon { font-size: 22px; }
#nav { flex: 1; padding: 10px 8px; overflow-y: auto; }
#nav .nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; margin-bottom: 2px; border-radius: var(--radius);
  color: var(--text); cursor: pointer; font-size: 14px;
  border: none; background: none; width: 100%; text-align: left;
}
#nav .nav-item:hover { background: var(--gray-light); }
#nav .nav-item.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
#nav .nav-section {
  font-size: 11px; color: var(--gray); padding: 14px 12px 4px; letter-spacing: 1px;
}
.sidebar-user {
  padding: 14px; border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px;
}
.sidebar-user .u-name { font-weight: 600; }
.sidebar-user .u-role { color: var(--gray); font-size: 12px; }
.sidebar-user .sidebar-actions { display: flex; gap: 6px; flex-wrap: wrap; }
#content { flex: 1; overflow-y: auto; padding: 22px 26px; }

.page-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 18px; gap: 12px; flex-wrap: wrap;
}
.page-title { font-size: 20px; font-weight: 700; }
.page-desc { color: var(--text-light); font-size: 13px; margin-top: 4px; }

/* ============ 卡片 / 表格 ============ */
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); margin-bottom: 16px;
}
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th {
  text-align: left; padding: 10px 12px; background: var(--gray-light);
  border-bottom: 1px solid var(--border); font-weight: 600; color: var(--text-light);
  white-space: nowrap;
}
.tbl td { padding: 10px 12px; border-bottom: 1px solid var(--gray-light); vertical-align: middle; }
.tbl tr:hover td { background: #fafbfc; }
.tbl .clickable { cursor: pointer; }
.empty { text-align: center; color: var(--gray); padding: 40px 0; }
.tbl-scroll { overflow-x: auto; }

/* ============ 状态徽章 ============ */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.badge-new { background: #fef3e2; color: #b25e00; }
.badge-accepted { background: #e5f6ff; color: #0b7bb8; }
.badge-processing { background: #e5efff; color: #1e55c0; }
.badge-replied { background: #fff4e5; color: #c77700; }
.badge-resolved { background: #e4f6ee; color: #1e7a4f; }
.badge-closed_unconfirmed { background: #e9eef5; color: #5c636a; }
.badge-solution_ineffective { background: #fdeaea; color: #b02a37; }
.badge-unhandled { background: #f0f0f0; color: #5c636a; }
.badge-priority-high { background: #fdeaea; color: #b02a37; }
.badge-priority-mid { background: #fef3e2; color: #b25e00; }
.badge-priority-low { background: #e9eef5; color: #4b5563; }
.badge-source-email { background: #e5efff; color: #1e55c0; }
.badge-source-manual { background: #efe9fb; color: #6d4fc9; }

/* 距客户反馈超时标色 */
td.age-warn, span.age-warn { color: #b25e00; font-weight: 600; background: #fff8ec; border-radius: 4px; padding: 2px 6px; }
td.age-danger, span.age-danger { color: #b02a37; font-weight: 700; background: #fdeaea; border-radius: 4px; padding: 2px 6px; }

/* ============ 统计卡片 ============ */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow);
}
.stat-card .num { font-size: 26px; font-weight: 700; margin-top: 6px; }
.stat-card .label { color: var(--text-light); font-size: 13px; }
.stat-card.c-new .num { color: var(--warn); }
.stat-card.c-accepted .num { color: #0b7bb8; }
.stat-card.c-processing .num { color: var(--primary); }
.stat-card.c-replied .num { color: #c77700; }
.stat-card.c-resolved .num { color: var(--success); }
.stat-card.c-closed_unconfirmed .num { color: var(--gray); }

/* ============ 筛选栏 ============ */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.filter-bar input[type="text"], .filter-bar select {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13px; background: #fff; min-width: 140px;
}
.filter-bar input[type="text"]:focus, .filter-bar select:focus { outline: none; border-color: var(--primary); }
.pagination { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 14px; color: var(--text-light); font-size: 13px; }

/* ============ 表单 ============ */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.form-item { display: flex; flex-direction: column; gap: 6px; }
.form-item label { font-size: 13px; color: var(--text-light); }
.form-item label .req { color: var(--danger); }
.form-item input[type="text"], .form-item input[type="email"], .form-item input[type="password"],
.form-item input[type="number"], .form-item select, .form-item textarea {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13px; font-family: inherit; background: #fff;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  outline: none; border-color: var(--primary);
}
.form-item textarea { resize: vertical; min-height: 80px; line-height: 1.6; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; font-size: 13px; }

/* ============ 登录 ============ */
#login-view {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #e8effc 0%, #f5f7fb 100%);
}
.login-card {
  width: 380px; background: #fff; border-radius: 12px; padding: 36px 34px;
  box-shadow: var(--shadow);
}
.login-card .logo { text-align: center; font-size: 44px; }
.login-card h1 { text-align: center; font-size: 20px; margin: 12px 0 4px; }
.login-card .sub { text-align: center; color: var(--gray); font-size: 13px; margin-bottom: 26px; }
.login-card .form-item { margin-bottom: 16px; }

/* ============ 会话时间线 ============ */
.thread { display: flex; flex-direction: column; gap: 14px; padding: 6px 0; }
.msg { display: flex; gap: 10px; max-width: 85%; }
.msg.in { align-self: flex-start; }
.msg.out { align-self: flex-end; flex-direction: row-reverse; }
.msg .avatar {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700; color: #fff;
}
.msg.in .avatar { background: #9aa4b2; }
.msg.out .avatar { background: var(--primary); }
.msg .bubble {
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.msg.out .bubble { background: var(--primary-light); border-color: #c9dcff; }
.msg .meta { font-size: 12px; color: var(--gray); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.msg .meta .who { font-weight: 600; color: var(--text-light); }
.msg .content { line-height: 1.7; white-space: pre-wrap; word-break: break-word; font-size: 13.5px; }
.msg .content.rich { white-space: normal; }
.msg .content.rich img { max-width: 100%; }
.msg .content.rich a { color: var(--primary); }
.msg .content:empty { display: none; }
.msg .translated {
  margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--border);
  color: var(--text-light); font-size: 12.5px; line-height: 1.7; white-space: pre-wrap;
}
.msg .translated .tr-tag {
  display: inline-block; margin-right: 8px; margin-bottom: 2px; color: var(--gray);
  font-size: 11px; background: #f0f2f5; padding: 1px 8px; border-radius: 10px;
}
.msg .attachments { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.att-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: #f4f6f9; border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 10px; font-size: 12px; color: var(--text);
}
.att-chip:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.channel-tag {
  font-size: 11px; padding: 1px 8px; border-radius: 10px; background: #f0f2f5; color: var(--text-light);
}
.channel-tag.email { background: #e5efff; color: #1e55c0; }
.channel-tag.manual { background: #efe9fb; color: #6d4fc9; }
.channel-tag.note { background: #e4f6ee; color: #1e7a4f; }
.channel-tag.feedback { background: #fef3e2; color: #b25e00; }

/* ============ 详情布局 ============ */
.detail-grid { display: grid; grid-template-columns: 1fr 340px; gap: 16px; align-items: start; }
.detail-main { min-width: 0; }
.detail-side { display: flex; flex-direction: column; gap: 16px; }
.kv { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 13px; }
.kv .k { color: var(--text-light); }
.kv .v { text-align: right; word-break: break-all; }

/* 建议横幅 */
.suggest-banner {
  background: #fff8ec; border: 1px solid #f5d9a8; border-radius: var(--radius);
  padding: 12px 14px; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.suggest-banner .txt { flex: 1; font-size: 13px; }

/* 回复编辑器 */
.reply-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; }
.reply-tabs .tab {
  padding: 8px 16px; cursor: pointer; border: none; background: none; font-size: 13.5px;
  color: var(--text-light); border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.reply-tabs .tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.editor textarea {
  width: 100%; min-height: 130px; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px; font-size: 13.5px; font-family: inherit; line-height: 1.7; resize: vertical;
}
.editor textarea:focus { outline: none; border-color: var(--primary); }
.rich-toolbar {
  display: flex; gap: 4px; align-items: center; flex-wrap: wrap;
  border: 1px solid var(--border); border-bottom: none; border-radius: 8px 8px 0 0;
  padding: 6px; background: #fafbfc;
}
.rich-toolbar button {
  border: 1px solid var(--border); background: #fff; border-radius: 4px;
  padding: 4px 9px; cursor: pointer; font-size: 13px; line-height: 1.4;
}
.rich-toolbar button:hover { border-color: var(--primary); color: var(--primary); }
.rich-toolbar select {
  border: 1px solid var(--border); border-radius: 4px; padding: 3px 4px; font-size: 12px; background: #fff;
}
.rich-editor {
  border: 1px solid var(--border); border-radius: 0 0 8px 8px; padding: 10px;
  min-height: 130px; font-size: 13.5px; line-height: 1.7; outline: none; background: #fff;
  overflow-y: auto; word-break: break-word;
}
.rich-editor:focus { border-color: var(--primary); }
.rich-editor:empty::before { content: attr(data-placeholder); color: #9aa4b2; }
.rich-editor img { max-width: 100%; }
.upload-zone {
  border: 1px dashed var(--border); border-radius: var(--radius); padding: 14px;
  text-align: center; color: var(--gray); cursor: pointer; margin-top: 10px; font-size: 13px;
  transition: all .15s;
}
.upload-zone:hover { border-color: var(--primary); color: var(--primary); }
.upload-list { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.upload-item {
  display: flex; align-items: center; gap: 8px; background: var(--gray-light);
  padding: 6px 10px; border-radius: 6px; font-size: 12.5px;
}
.upload-item .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.upload-item .del { cursor: pointer; color: var(--danger); border: none; background: none; font-size: 14px; }
.editor-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; align-items: center; }
.editor-actions .hint { color: var(--gray); font-size: 12px; flex: 1; }

/* ============ 邮箱账户卡片 ============ */
.acc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.acc-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow); position: relative;
}
.acc-card .acc-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.acc-card .acc-email { font-size: 13px; color: var(--text-light); margin-bottom: 10px; word-break: break-all; }
.acc-card .acc-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.acc-card .acc-status { font-size: 12px; color: var(--gray); }
.acc-card .acc-status .on { color: var(--success); }
.acc-card .acc-status .off { color: var(--gray); }

/* ============ 弹窗 ============ */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 100;
  display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto;
}
.modal {
  background: #fff; border-radius: 12px; width: 640px; max-width: 100%;
  box-shadow: 0 12px 40px rgba(0,0,0,.2); padding: 24px;
}
.modal.wide { width: 860px; }
.modal .modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.modal .modal-head h3 { font-size: 16px; }
.modal .close { border: none; background: none; font-size: 22px; cursor: pointer; color: var(--gray); line-height: 1; }
.modal .close:hover { color: var(--text); }

/* ============ Toast ============ */
#toast-container { position: fixed; top: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: #333; color: #fff; padding: 10px 18px; border-radius: 8px;
  font-size: 13px; box-shadow: var(--shadow); animation: slideIn .2s ease;
  max-width: 380px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warn { background: var(--warn); }
@keyframes slideIn { from { transform: translateX(30px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ============ 其他 ============ */
.hint-text { color: var(--gray); font-size: 12px; line-height: 1.7; }
.code-block {
  background: #f6f8fa; border: 1px solid var(--border); border-radius: 6px;
  padding: 10px 12px; font-family: Consolas, monospace; font-size: 12.5px;
  overflow-x: auto; margin: 8px 0; word-break: break-all;
}
.divider { height: 1px; background: var(--border); margin: 14px 0; }
.muted { color: var(--gray); }
.mt8 { margin-top: 8px; } .mt12 { margin-top: 12px; } .mt16 { margin-top: 16px; }
.mb8 { margin-bottom: 8px; } .mb12 { margin-bottom: 12px; } .mb16 { margin-bottom: 16px; }
.flex { display: flex; align-items: center; gap: 8px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.flex-wrap { flex-wrap: wrap; }

@media (max-width: 900px) {
  #sidebar { width: 64px; }
  #sidebar .brand-name, #sidebar .nav-item span.nav-label, #sidebar .sidebar-user { display: none; }
  .detail-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  #content { padding: 14px; }
}