:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1f2733;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --ok: #16a34a;
  --unread: #eef4ff;
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  height: 100%;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 14px;
}
#app {
  height: 100%;
}
button {
  font: inherit;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 6px;
  padding: 6px 12px;
  color: var(--text);
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button.primary:hover {
  background: var(--accent-hover);
}
button.danger {
  color: var(--danger);
  border-color: #f0c4c4;
}
/* 危险确认主按钮（confirmDialog danger）：红底白字，而非蓝底红字 */
button.primary.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
button.primary.danger:hover {
  background: #b91c1c;
}
button:disabled {
  opacity: 0.5;
  cursor: default;
}
input,
select,
textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  width: 100%;
}
a {
  color: var(--accent);
}

/* ── 登录 ── */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 320px;
}
.login-card h1 {
  margin: 0 0 20px;
  font-size: 20px;
}
.field {
  margin-bottom: 14px;
}
.field label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 13px;
}
.msg-error {
  color: var(--danger);
  margin: 8px 0;
  min-height: 18px;
}

/* ── 主布局 ── */
.layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  height: 100%;
}
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sidebar .brand {
  font-weight: 700;
  font-size: 16px;
  padding: 8px;
  margin-bottom: 8px;
}
.nav-item {
  text-align: left;
  border: none;
  background: none;
  padding: 8px 10px;
  border-radius: 6px;
  width: 100%;
}
.nav-item:hover {
  background: var(--bg);
}
.nav-item.active {
  background: var(--unread);
  color: var(--accent);
  font-weight: 600;
}
.sidebar .spacer {
  flex: 1;
}
.sidebar .account {
  padding: 6px 10px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sidebar .account-warn {
  color: var(--danger);
  cursor: pointer;
}
.sidebar .account-warn:hover {
  text-decoration: underline;
}
.main {
  overflow: auto;
  padding: 20px 24px;
}
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.toolbar h2 {
  margin: 0;
  font-size: 18px;
  flex: 1;
}
.search {
  max-width: 240px;
}

/* ── 列表 ── */
.mail-list {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.mail-row {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  align-items: baseline;
}
.mail-row:last-child {
  border-bottom: none;
}
.mail-row:hover {
  background: var(--bg);
}
.mail-row.unread {
  background: var(--unread);
}
.mail-row .from {
  width: 180px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}
.mail-row.unread .from::before {
  content: "●";
  color: var(--accent);
  margin-right: 6px;
  font-size: 10px;
}
.mail-row .to {
  width: 160px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}
.mail-row .subj {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mail-row .subj .snippet {
  color: var(--muted);
  margin-left: 8px;
}
.mail-row .meta {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.mail-row .clip {
  margin-right: 4px;
}
.empty {
  padding: 40px;
  text-align: center;
  color: var(--muted);
}

/* ── 分页 ── */
.pager {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin: 16px 0;
  color: var(--muted);
}

/* ── 详情 ── */
.detail {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
}
.detail h2 {
  margin: 0 0 4px;
}
.detail .hdr-row {
  color: var(--muted);
  margin: 2px 0;
  font-size: 13px;
}
.detail .body-frame {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 16px;
  min-height: 300px;
  background: #fff;
}
.detail .body-text {
  white-space: pre-wrap;
  margin-top: 16px;
  line-height: 1.6;
}
.att-list {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.att-chip {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
}
.banner {
  background: #fff8e1;
  border: 1px solid #f5e0a3;
  padding: 8px 12px;
  border-radius: 6px;
  margin-top: 12px;
  font-size: 13px;
}
.banner button {
  margin-left: 8px;
  padding: 2px 8px;
}

/* ── 表格 ── */
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
th,
td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--muted);
  font-weight: 600;
  font-size: 13px;
}
tr:last-child td {
  border-bottom: none;
}
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
}
.badge.active {
  background: #dcfce7;
  color: var(--ok);
}
.badge.sent {
  background: #dcfce7;
  color: var(--ok);
}
.badge.queued {
  background: #fef3c7;
  color: #b45309;
}
.badge.failed {
  background: #fee2e2;
  color: var(--danger);
}

/* ── 弹层 ── */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 60px 20px;
  z-index: 50;
}
.modal {
  background: var(--panel);
  border-radius: 12px;
  width: 560px;
  max-width: 100%;
  padding: 24px;
  max-height: 80vh;
  overflow: auto;
}
.modal h3 {
  margin: 0 0 16px;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}
.row-actions {
  display: flex;
  gap: 6px;
}
.hint {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

/* ── 列表行内小按钮与发送状态 ── */
.mail-row .meta {
  display: flex;
  align-items: center;
  gap: 8px;
}
button.mini {
  padding: 2px 8px;
  font-size: 12px;
}

/* ── 地址标签 ── */
.addr-tag {
  display: inline-block;
  background-color: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 12px;
  margin-right: 6px;
  font-weight: bold;
}

/* ── toast ── */
#toast-host {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
}
.toast {
  background: #1f2733;
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 0.2s,
    transform 0.2s;
  cursor: pointer;
  max-width: 320px;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast-ok {
  background: #16a34a;
}
.toast-error {
  background: var(--danger);
}
.toast-info {
  background: #334155;
}

/* ── 对话框（confirm / alert / prompt）── */
.dialog {
  background: var(--panel);
  border-radius: 12px;
  width: 400px;
  max-width: 100%;
  padding: 22px 24px;
}
.dialog h3 {
  margin: 0 0 12px;
}
.dialog-msg {
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 8px;
  white-space: pre-wrap;
}
.dialog input {
  margin-top: 8px;
}

/* ── 富文本编辑器 ── */
.rte {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.rte-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 8px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.rte-btn {
  padding: 4px 10px;
  font-size: 13px;
  border-radius: 5px;
}
.rte-body {
  min-height: 220px;
  padding: 12px 14px;
  outline: none;
  line-height: 1.6;
  background: #fff;
}
.rte-body:focus {
  background: #fff;
}
.rte-body blockquote {
  border-left: 3px solid var(--border);
  margin: 8px 0;
  padding-left: 12px;
  color: var(--muted);
}
.rte-body .quote-hdr {
  color: var(--muted);
  font-size: 12px;
  margin: 8px 0 4px;
}

/* ── 撰写页附件 chip 删除 ── */
.compose .att-list {
  margin-top: 8px;
}
.chip-x {
  margin-left: 8px;
  color: var(--danger);
  cursor: pointer;
  font-weight: 700;
}

/* ── 收件人通讯录联想下拉 ── */
.autocomplete {
  position: relative;
}
.contact-dropdown {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 30;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  max-height: 260px;
  overflow-y: auto;
}
.contact-dropdown.open {
  display: block;
}
.ac-item {
  padding: 8px 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ac-item:hover {
  background: var(--bg);
}
.ac-name {
  font-weight: 600;
}
.ac-email {
  color: var(--muted);
  font-size: 12px;
}

/* ── 表格横向滚动容器（移动端防撑破）── */
.table-wrap {
  width: 100%;
  overflow-x: auto;
}

/* ── 顶部条 + 抽屉遮罩：桌面端隐藏 ── */
.topbar,
.sidebar-mask {
  display: none;
}

/* ── 全局 Loading ── */
#global-loading {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.5);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.2s;
}
#global-loading.show {
  visibility: visible;
  opacity: 1;
}
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── 移动端 ── */
@media (max-width: 768px) {
  .layout {
    display: block;
    height: auto;
  }
  .topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
  }
  .topbar .brand {
    font-weight: 700;
    font-size: 16px;
  }
  .hamburger {
    border: none;
    background: none;
    font-size: 20px;
    padding: 4px 8px;
  }
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 220px;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    overflow-y: auto;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-mask.open {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 35;
  }
  .main {
    padding: 14px;
  }
  .toolbar {
    flex-wrap: wrap;
  }
  .toolbar h2 {
    flex-basis: 100%;
  }
  .search {
    max-width: none;
    width: 100%;
  }
  .mail-row {
    flex-wrap: wrap;
  }
  .mail-row .from {
    width: auto;
    flex: 1 1 100%;
  }
  .mail-row .to {
    width: auto;
    flex: 1 1 100%;
  }
  .mail-row .subj {
    flex: 1 1 100%;
    white-space: normal;
  }
  .mail-row .meta {
    width: 100%;
    justify-content: flex-start;
  }
  .modal,
  .dialog {
    width: 100%;
  }
  .modal-mask {
    padding: 20px 12px;
    align-items: center;
  }
  .detail {
    padding: 16px;
  }
  .login-card {
    width: 100%;
  }
}