/* ===== 主题变量（深蓝顶栏 / 浅灰背景 / 蓝色主色）===== */
:root {
  --bg: #f2f4f8;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e3e7ee;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --blue: #3b82f6;
  --green: #16a34a;
  --red: #dc2626;
  --orange: #ea580c;
  --gray: #9ca3af;
  --dark: #4b5563;
  --shadow: 0 6px 20px rgba(15, 23, 42, .07);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }

/* ===== 顶栏（三个系统统一：品牌 + 导航 + 用户区）===== */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 18px;
  background: #0f172a;
  color: #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 50;
  flex-wrap: wrap;
}

.brand { font-weight: 700; font-size: 16px; letter-spacing: .5px; }
.brand span { color: #7dd3fc; font-weight: 400; }

.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  color: #cbd5e1;
  padding: 6px 12px;
  border-radius: 8px;
  transition: background .15s;
}
.nav a:hover { background: rgba(255, 255, 255, .08); }
.nav a.active { background: rgba(125, 211, 252, .18); color: #7dd3fc; }
.nav-badge {
  background: #ef4444;
  color: #fff;
  border-radius: 999px;
  font-size: 11px;
  padding: 0 6px;
  margin-left: 6px;
  display: inline-block;
  line-height: 1.7;
  vertical-align: middle;
}

.userbox { display: flex; align-items: center; gap: 8px; }
.userbox .who { color: #94a3b8; font-size: 13px; }
.userbox .btn.ghost { color: #fff; border-color: rgba(255, 255, 255, .45); }
.userbox .btn.ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; color: #fff; }

.container { max-width: 1280px; margin: 0 auto; padding: 18px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.btn:hover { border-color: #c7cdd8; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: transparent; }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.sm { padding: 4px 10px; font-size: 13px; }
.btn.block { width: 100%; }
.danger-text { color: var(--red); }
.nowrap { white-space: nowrap; }

/* ===== 顶部统计卡（总数/进行中/已完成/阻塞/逾期）===== */
.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
  border-top: 3px solid var(--primary);
}
.stat.blue { border-top-color: var(--blue); }
.stat.green { border-top-color: var(--green); }
.stat.red { border-top-color: var(--red); }
.stat.orange { border-top-color: var(--orange); }
.stat-value { font-size: 24px; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 13px; }

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.toolbar select,
.toolbar input[type="search"],
.toolbar input[type="text"],
.toolbar input:not([type]) {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  background: var(--card);
  font-size: 14px;
  min-width: 130px;
}
.toolbar input[placeholder^="搜索"] { min-width: 200px; }
.check { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); }
.hint { color: var(--muted); font-size: 12px; margin-left: auto; }

.seg {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--card);
}
.seg button {
  border: none;
  background: transparent;
  padding: 7px 14px;
  cursor: pointer;
  font-size: 14px;
  color: var(--muted);
}
.seg button.active { background: var(--primary); color: #fff; }

/* ===== 看板：分组列 + 任务卡 ===== */
.board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
  align-items: start;
}

.lane {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.lane-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: #f8fafc;
}
.lane-head h2 { font-size: 15px; margin: 0; }
.lane-sub { color: var(--muted); font-size: 12px; }
.lane-count {
  margin-left: auto;
  background: #e2e8f0;
  color: var(--dark);
  border-radius: 999px;
  padding: 1px 9px;
  font-size: 12px;
}
.lane-body { padding: 10px; display: flex; flex-direction: column; gap: 10px; }

.task {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
  background: #fff;
}
.task:hover { border-color: #b9c3d4; box-shadow: 0 4px 14px rgba(15, 23, 42, .08); }
.task.overdue { border-left: 3px solid var(--red); }
.task-head { display: flex; align-items: flex-start; gap: 8px; }
.task-head h3 { flex: 1; margin: 0; font-size: 14px; font-weight: 600; }
.task-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}
.overdue-text { color: var(--red); font-weight: 600; }

/* ===== 徽章（状态/优先级/剩余天数等）===== */
.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 1px 9px;
  font-size: 12px;
  white-space: nowrap;
}
.badge.blue { background: #dbeafe; color: #1d4ed8; }
.badge.green { background: #dcfce7; color: #15803d; }
.badge.red { background: #fee2e2; color: #b91c1c; }
.badge.orange { background: #ffedd5; color: #c2410c; }
.badge.gray { background: #f1f5f9; color: #64748b; }
.badge.dark { background: #e2e8f0; color: #334155; }
.badge.outline { border: 1px solid var(--border); background: #fff; color: var(--dark); }

.progress {
  height: 7px;
  border-radius: 999px;
  background: #eef1f6;
  overflow: hidden;
  margin-top: 8px;
}
.progress-inner { height: 100%; border-radius: 999px; background: var(--gray); transition: width .3s; }
.progress-inner.blue { background: var(--blue); }
.progress-inner.green { background: var(--green); }
.progress-inner.red { background: var(--red); }
.progress-inner.orange { background: var(--orange); }
.progress-inner.dark { background: var(--dark); }

.task-foot {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.empty { color: var(--muted); font-size: 13px; text-align: center; padding: 12px 0; }

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 16px;
}
.panel h2 { margin: 0 0 12px; font-size: 16px; }
.muted { color: var(--muted); font-weight: 400; font-size: 13px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px 12px;
}
.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
  font-size: 13px;
}
.form-grid input,
.form-grid select,
.form-grid textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.span-2 { grid-column: span 2; }

.split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
  margin-bottom: 14px;
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: #f8fafc; }
.cell-title { max-width: 260px; }
.prio { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.prio .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex: none;
}
.prio-high .dot { background: #ef4444; box-shadow: 0 0 0 3px rgba(239, 68, 68, .18); }
.prio-mid .dot { background: #f59e0b; box-shadow: 0 0 0 3px rgba(245, 158, 11, .18); }
.prio-low .dot { background: #3b82f6; box-shadow: 0 0 0 3px rgba(59, 130, 246, .18); }
.role-select {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 13px;
  background: #fff;
  color: var(--text);
}

/* ===== 弹窗骨架（任务详情/改密码共用）===== */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .45);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 6vh 14px;
  z-index: 100;
  overflow-y: auto;
}
.modal-mask.hidden { display: none; }
.modal {
  background: var(--card);
  border-radius: 14px;
  width: 100%;
  max-width: 560px;
  padding: 18px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, .3);
}
.modal-head { display: flex; align-items: flex-start; gap: 10px; }
.modal-head h2 { flex: 1; margin: 0; font-size: 17px; }
.modal-info {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0;
  font-size: 12px;
}
.task-detail { color: #374151; background: #f8fafc; border-radius: 8px; padding: 10px; font-size: 13px; }
.modal form { display: flex; flex-direction: column; gap: 10px; }
.modal form label { display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 13px; }
.modal form input,
.modal form select,
.modal form textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.log-title { font-size: 14px; margin: 16px 0 8px; }
.logs { max-height: 220px; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.log { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 13px; }
.log-head { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; }
.log-changes { color: #334155; margin-top: 4px; }
.log-note { color: #475569; margin-top: 4px; }

/* ===== 登录页 ===== */
.login-wrap { display: flex; justify-content: center; padding: 8vh 14px; }
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 { margin: 0; font-size: 20px; text-align: center; }
.login-card .sub { margin: 0 0 8px; text-align: center; color: var(--muted); font-size: 13px; }
.login-card label { display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 13px; }
.login-card input { border: 1px solid var(--border); border-radius: 8px; padding: 9px 12px; font-size: 14px; }
.error { color: var(--red); font-size: 13px; margin: 0; text-align: center; }
.hidden { display: none; }

/* ===== 移动端适配 ===== */
@media (max-width: 860px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .board { grid-template-columns: 1fr; }
  .topbar { gap: 10px; padding: 10px 12px; }
  .nav { order: 3; width: 100%; }
  .userbox { margin-left: auto; }
  .hint { display: none; }
}

/* UI: 信息层级、键盘焦点、移动端 */
:root{--bg:#f5f7fc;--border:#dfe7f3;--shadow:0 8px 30px rgba(31,54,91,.06)}
.topbar{padding:12px clamp(14px,3vw,32px);box-shadow:0 6px 22px rgba(15,23,42,.12)}
.container{max-width:1480px;padding:clamp(12px,2.5vw,30px)}
.stat{border-radius:14px;box-shadow:var(--shadow)}
.task{cursor:pointer;transition:transform .16s,box-shadow .16s}
.task:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(15,23,42,.10)}
.btn:focus-visible,a:focus-visible,.task:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #93c5fd;outline-offset:2px}
.btn:disabled{opacity:.55;cursor:wait}
.page-intro{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.page-intro h1{font-size:clamp(20px,2vw,26px);margin:0 0 4px}
.page-intro p{margin:0;color:var(--muted)}
.sync-tools{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
.sync-status{font-size:12px;color:#15803d}
.sync-status::before{content:'●';margin-right:6px}
.sync-status.sync-error{color:#b91c1c}
.login-card{max-width:420px;padding:32px;border-radius:20px;box-shadow:0 16px 50px rgba(15,23,42,.09)}
@media(max-width:650px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.page-intro{flex-direction:column;align-items:flex-start}.toolbar{gap:8px}.toolbar input[type=search]{min-width:0;width:100%}.grid-2{grid-template-columns:1fr}.nav{overflow-x:auto}.nav a{white-space:nowrap}}
@media(prefers-reduced-motion:reduce){.task{transition:none}.task:hover{transform:none}}