:root {
  --bg: #f4f6fb;
  --bg-card: #ffffff;
  --bg-side: #ffffff;
  --text: #1f2733;
  --text-soft: #6b7686;
  --border: #e4e8f0;
  --primary: #4d7cff;
  --primary-d: #3a63d8;
  --danger: #ef4444;
  --ok: #16a34a;
  --warn: #f59e0b;
  --shadow: 0 4px 18px rgba(31, 39, 51, .08);
  --radius: 12px;
  --high: #ef4444;
  --medium: #f59e0b;
  --low: #3b82f6;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.app { display: flex; height: 100vh; overflow: hidden; }

/* ---------- 侧边栏 ---------- */
.sidebar {
  width: 248px; flex-shrink: 0;
  background: var(--bg-side);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: margin-left .25s ease;
}
.sidebar.collapsed { margin-left: -248px; }
.brand {
  display: flex; align-items: center; gap: 8px;
  padding: 16px 18px; font-weight: 700; font-size: 17px;
  border-bottom: 1px solid var(--border);
}
.brand-logo {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: grid; place-items: center; font-size: 16px;
}
.brand-name { flex: 1; }
.sidebar-toggle { font-size: 14px; }

.nav { padding: 10px 10px 4px; }
.nav-item {
  width: 100%; display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border: none; background: none;
  border-radius: 8px; color: var(--text-soft); cursor: pointer;
  font-size: 14px; text-align: left; margin-bottom: 2px;
}
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-ico { width: 18px; text-align: center; }
.nav-count { margin-left: auto; font-size: 12px; opacity: .8; }

.cat-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px 6px; font-size: 12px; color: var(--text-soft);
  text-transform: uppercase; letter-spacing: .04em;
}
.cat-list { list-style: none; margin: 0; padding: 0 10px; overflow-y: auto; flex: 1; }
.cat-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 8px; cursor: pointer;
}
.cat-item:hover { background: var(--bg); }
.cat-item.active { background: var(--bg); font-weight: 600; }
.cat-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.cat-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat-edit { opacity: 0; border: none; background: none; cursor: pointer; color: var(--text-soft); }
.cat-item:hover .cat-edit { opacity: 1; }
.cat-count { font-size: 12px; color: var(--text-soft); }

.sidebar-foot {
  padding: 12px 14px; border-top: 1px solid var(--border);
  display: flex; gap: 8px;
}

/* ---------- 主区 ---------- */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px; background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.search-wrap { flex: 1; max-width: 520px; }
.search-wrap input {
  width: 100%; padding: 9px 14px; border: 1px solid var(--border);
  border-radius: 20px; font-size: 14px; background: var(--bg);
}
.top-actions { margin-left: auto; }

.filters {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px;
  padding: 12px 20px; background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group label { font-size: 11px; color: var(--text-soft); }
.filter-group select, .filter-group input {
  padding: 7px 10px; border: 1px solid var(--border);
  border-radius: 8px; background: #fff; font-size: 13px;
}
.bulk-bar {
  display: flex; align-items: center; gap: 8px; flex-basis: 100%;
  padding: 8px 10px; background: #eef3ff; border-radius: 8px; margin-top: 4px;
}
.bulk-bar span { font-weight: 600; margin-right: 4px; }

.list-wrap { flex: 1; overflow-y: auto; padding: 16px 20px; }
.list-head {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 12px; color: var(--text-soft); font-size: 13px;
}
.list-title { font-weight: 600; color: var(--text); font-size: 15px; }
.list-meta { margin-left: auto; }

.task-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.task-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 14px;
  display: flex; align-items: flex-start; gap: 12px;
  box-shadow: var(--shadow); cursor: grab; position: relative;
  transition: box-shadow .15s, transform .05s;
}
.task-card:active { cursor: grabbing; }
.task-card.dragging { opacity: .5; }
.task-card.drag-over { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary) inset; }
.task-card.done .task-title { text-decoration: line-through; color: var(--text-soft); }
.task-card.overdue { border-left: 4px solid var(--danger); }
.task-card .check { margin-top: 2px; }
.task-main { flex: 1; min-width: 0; }
.task-title { font-weight: 600; margin: 0 0 4px; }
.task-desc {
  color: var(--text-soft); font-size: 13px; margin: 0 0 6px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.task-meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12px; color: var(--text-soft); align-items: center; }
.pill { padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.pill-cat { background: var(--bg); }
.pill-prio-high { background: #fde8e8; color: var(--high); }
.pill-prio-medium { background: #fef3e2; color: var(--medium); }
.pill-prio-low { background: #e8f0fe; color: var(--low); }
.tag { background: var(--bg); border: 1px solid var(--border); padding: 1px 7px; border-radius: 10px; }
.due { display: inline-flex; align-items: center; gap: 3px; }
.due.soon { color: var(--warn); font-weight: 600; }
.due.late { color: var(--danger); font-weight: 600; }
.task-actions { display: flex; flex-direction: column; gap: 6px; }
.icon-btn {
  border: 1px solid var(--border); background: #fff; border-radius: 8px;
  width: 30px; height: 30px; cursor: pointer; color: var(--text-soft);
  display: grid; place-items: center; font-size: 14px;
}
.icon-btn:hover { color: var(--text); border-color: var(--text-soft); }
.row-check { width: 18px; height: 18px; cursor: pointer; }

.empty { text-align: center; padding: 60px 0; color: var(--text-soft); }

/* ---------- 按钮 ---------- */
.primary-btn {
  background: var(--primary); color: #fff; border: none;
  padding: 9px 16px; border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 600;
}
.primary-btn:hover { background: var(--primary-d); }
.ghost-btn {
  background: #fff; border: 1px solid var(--border); color: var(--text);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px;
}
.ghost-btn:hover { border-color: var(--text-soft); }
.danger-btn {
  background: #fff; border: 1px solid var(--danger); color: var(--danger);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px;
}
.danger-btn:hover { background: var(--danger); color: #fff; }
.only-mobile { display: none; }

/* ---------- 弹窗 ---------- */
.modal, .drawer {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .45);
  display: grid; place-items: center; z-index: 50; padding: 16px;
}
.drawer { place-items: stretch; justify-content: flex-end; background: rgba(15, 23, 42, .35); }
.modal-card {
  background: #fff; border-radius: var(--radius); width: 520px; max-width: 100%;
  max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.modal-card.small { width: 380px; }
.modal-head, .drawer-head {
  display: flex; align-items: center; padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3, .drawer-head h3 { margin: 0; flex: 1; font-size: 16px; }
.modal-body { padding: 18px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.field { margin-bottom: 14px; display: flex; flex-direction: column; gap: 5px; }
.field label { font-size: 12px; color: var(--text-soft); }
.field input, .field textarea, .field select {
  padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; width: 100%;
}
.field input[type=color] { padding: 3px; height: 38px; }
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

.drawer-card {
  background: #fff; width: 420px; max-width: 100%; height: 100%;
  overflow-y: auto; box-shadow: -10px 0 40px rgba(0,0,0,.2);
}
.drawer-body { padding: 18px; }
.detail-block { margin-bottom: 18px; }
.detail-block h4 { margin: 0 0 8px; font-size: 13px; color: var(--text-soft); text-transform: uppercase; }
.detail-row { display: flex; gap: 8px; padding: 4px 0; font-size: 13px; }
.detail-row .k { color: var(--text-soft); width: 84px; flex-shrink: 0; }
.log-item { font-size: 12px; padding: 6px 0; border-bottom: 1px dashed var(--border); color: var(--text-soft); }
.log-item b { color: var(--text); }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; right: 18px; bottom: 18px; z-index: 80; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: #1f2733; color: #fff; padding: 12px 16px; border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.3); max-width: 320px; font-size: 13px;
  animation: slideIn .2s ease; border-left: 4px solid var(--primary);
}
.toast.warn { border-left-color: var(--warn); }
.toast.danger { border-left-color: var(--danger); }
.toast.ok { border-left-color: var(--ok); }
@keyframes slideIn { from { transform: translateX(40px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .sidebar { position: fixed; z-index: 60; height: 100%; box-shadow: 4px 0 24px rgba(0,0,0,.15); }
  .sidebar.collapsed { margin-left: -248px; }
  .only-mobile { display: grid; }
  .field-row { flex-direction: column; }
  .drawer-card { width: 100%; }
  .topbar { flex-wrap: wrap; gap: 8px; }
  .search-wrap { order: 3; flex: 1 1 100%; }
  .top-actions { margin-left: auto; }
  .filters { flex-direction: column; align-items: stretch; gap: 8px; }
  .filter-group { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
  .filter-group select, .filter-group input { flex: 1; }
  .bulk-bar { flex-wrap: wrap; }
  .list-head { flex-wrap: wrap; gap: 8px; }
  .list-tools { width: 100%; margin-left: 0; }
  .task-list { grid-template-columns: 1fr; }
  .data-table { font-size: 12px; }
}

/* 窄屏筛选条横向滚动兜底 */
@media (max-width: 560px) {
  .filters { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; }
  .filter-group { flex: 0 0 auto; flex-direction: column; align-items: flex-start; }
}

/* 宽屏：任务卡片双列网格 */
@media (min-width: 920px) {
  .task-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; align-items: start; }
  .task-card { margin-bottom: 0; }
}

/* ---------- 认证视图 ---------- */
.auth-view { position: fixed; inset: 0; display: grid; place-items: center; background: linear-gradient(135deg, #eef3ff 0%, #f4f6fb 100%); padding: 16px; }
.auth-card { background: #fff; border-radius: 16px; box-shadow: 0 20px 60px rgba(31,39,51,.12); width: 400px; max-width: 100%; padding: 26px 28px; }
.brand-center { justify-content: center; border: none; padding: 0 0 14px; }
.auth-form h2 { margin: 0 0 16px; font-size: 20px; }
.auth-switch { display: flex; justify-content: space-between; margin-top: 14px; font-size: 13px; }
.auth-switch a { color: var(--primary); text-decoration: none; cursor: pointer; }
.auth-switch a:hover { text-decoration: underline; }
.auth-msg { margin: 12px 0 0; font-size: 13px; min-height: 18px; }
.auth-msg.ok { color: var(--ok); }
.auth-msg.err { color: var(--danger); }
.auth-hint { font-size: 13px; color: var(--text-soft); margin: 0 0 14px; }
.err { color: var(--danger); font-size: 12px; min-height: 14px; }
.block { width: 100%; }
.pw-strength { display: flex; gap: 4px; margin-top: 6px; }
.pw-strength span { height: 4px; flex: 1; border-radius: 2px; background: var(--border); }
.pw-strength.s1 span:nth-child(1) { background: var(--danger); }
.pw-strength.s2 span:nth-child(-n+2) { background: var(--warn); }
.pw-strength.s3 span:nth-child(-n+3) { background: var(--ok); }
.token-box { margin-top: 12px; padding: 10px 12px; background: #fff7ed; border: 1px dashed var(--warn); border-radius: 8px; font-size: 12px; color: #92400e; word-break: break-all; }

/* ---------- 列表工具条 / 视图切换 / 分页 ---------- */
.list-tools { margin-left: auto; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg-btn { border: none; background: #fff; padding: 5px 12px; font-size: 13px; cursor: pointer; }
.seg-btn.active { background: var(--primary); color: #fff; }
.table-wrap { overflow-x: auto; margin-top: 8px; border: 1px solid var(--border); border-radius: 10px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 720px; }
.data-table th, .data-table td { padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
.data-table th { background: var(--bg); color: var(--text-soft); font-weight: 600; position: sticky; top: 0; }
.data-table th[data-sort] { cursor: pointer; user-select: none; }
.data-table th[data-sort]:hover { color: var(--primary); }
.data-table th.sort-asc::after { content: ' ▲'; font-size: 10px; }
.data-table th.sort-desc::after { content: ' ▼'; font-size: 10px; }
.data-table tbody tr:hover { background: rgba(77,124,255,.04); }
.pager { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin-top: 12px; }
.page-btn { border: 1px solid var(--border); background: #fff; border-radius: 6px; padding: 5px 10px; font-size: 13px; cursor: pointer; }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }
.page-ellipsis { padding: 0 4px; color: var(--text-soft); }
.page-info { margin-left: auto; font-size: 12px; color: var(--text-soft); }

/* ---------- 用户 chip / 头像 ---------- */
.user-chip { display: flex; align-items: center; gap: 8px; border: 1px solid var(--border); background: #fff; border-radius: 20px; padding: 4px 12px 4px 4px; cursor: pointer; font-size: 13px; }
.user-chip:hover { border-color: var(--text-soft); }
.user-avatar { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; background: var(--bg); }
.user-avatar:not([src]), .user-avatar[src=""] { visibility: hidden; }

/* ---------- 资料 / 管理 ---------- */
.auth-demo-seed { margin-top: 12px; font-size: 12px; color: var(--text-soft); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.auth-demo-seed a { color: var(--primary); font-weight: 600; }
.auth-demo-seed a:hover { text-decoration: underline; }
.profile-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.profile-head img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; background: var(--bg); border: 1px solid var(--border); }
.profile-role { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.role-admin { background: #fde8e8; color: var(--danger); }
.role-user { background: #e8f0fe; color: var(--low); }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th, .admin-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
.admin-table th { color: var(--text-soft); font-weight: 600; }
.badge-ok { color: var(--ok); font-weight: 600; }
.badge-no { color: var(--text-soft); }
.role-sel { padding: 4px 6px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; background: #fff; }
.mini-btn { padding: 3px 9px; border: 1px solid var(--border); background: #fff; border-radius: 6px; font-size: 12px; cursor: pointer; }
.mini-btn:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.mini-btn.danger:hover:not(:disabled) { border-color: var(--danger); color: var(--danger); }
.mini-btn:disabled { opacity: .4; cursor: not-allowed; }
.perm-matrix { margin-top: 14px; padding: 12px; background: var(--bg); border-radius: 8px; font-size: 13px; }
.perm-matrix .perm-row { margin-top: 6px; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.perm-matrix .perm-row span:last-child { color: var(--text-soft); font-size: 12px; }