:root{
  --bg:#f7f8fa;--surface:#fff;--surface-2:#f1f3f6;--text:#111827;--muted:#6b7280;
  --line:#e5e7eb;--primary:#2563eb;--primary-soft:#eef4ff;--danger:#ef4444;
  --danger-soft:#fff0f0;--warning:#f59e0b;--warning-soft:#fff7df;--success:#22c55e;
  --success-soft:#ecfdf3;--purple:#8b5cf6;--shadow:0 8px 30px rgba(15,23,42,.05);
}
[data-theme="dark"]{
  --bg:#0e1117;--surface:#151922;--surface-2:#1d2330;--text:#f3f4f6;--muted:#9ca3af;
  --line:#293140;--primary:#5b8cff;--primary-soft:#182743;--danger:#ff6464;
  --danger-soft:#321b1b;--warning:#fbbf24;--warning-soft:#332a14;--success:#4ade80;
  --success-soft:#173122;--purple:#a78bfa;--shadow:0 10px 35px rgba(0,0,0,.18);
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
button,input,select,textarea{font:inherit}button{cursor:pointer}
a{text-decoration:none;color:inherit}
.app{display:grid;grid-template-columns:266px 1fr;min-height:100vh}
.sidebar{background:var(--surface);border-right:1px solid var(--line);padding:22px 16px;position:sticky;top:0;height:100vh}
.brand{font-size:31px;font-weight:800;letter-spacing:-1.6px;padding:0 8px 24px;white-space:nowrap}
.brand small{display:block;font-size:15px;letter-spacing:0;font-weight:700;margin-top:4px;color:var(--muted)}
.nav{display:flex;flex-direction:column;gap:4px}.nav button{border:0;background:transparent;color:var(--text);padding:11px 12px;border-radius:10px;text-align:left;display:flex;align-items:center;gap:11px}
.nav button:hover{background:var(--surface-2)}.nav button.active{background:var(--primary-soft);color:var(--primary);font-weight:700}
.nav .icon{width:20px;text-align:center}.badge{margin-left:auto;background:var(--surface-2);color:var(--muted);border-radius:999px;padding:2px 8px;font-size:12px}
.quick{margin-top:28px;border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--surface)}
.quick b{font-size:13px}.quick button{display:block;width:100%;border:0;background:transparent;color:var(--primary);text-align:left;padding:9px 0}
.main{min-width:0}.topbar{height:86px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:22px;padding:0 28px;position:sticky;top:0;z-index:10}
.top-title{font-size:18px;font-weight:700;white-space:nowrap}.search{flex:1;max-width:720px;position:relative}.search input{width:100%;padding:13px 44px 13px 43px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);outline:none}.search input:focus{border-color:var(--primary)}.search span{position:absolute;left:15px;top:11px;color:var(--muted);font-size:20px}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:12px}.icon-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:9px;width:38px;height:38px}.user-menu{display:flex;align-items:center;gap:10px}.avatar{width:34px;height:34px;border-radius:50%;background:#dbeafe;display:grid;place-items:center;font-weight:700;color:#1d4ed8}.user-menu small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.content{padding:28px;max-width:1600px;margin:auto}.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-head h1{margin:0;font-size:25px}.page-head p{margin:5px 0 0;color:var(--muted)}.actions{display:flex;gap:8px}
.btn{border:1px solid var(--line);background:var(--surface);color:var(--text);padding:10px 14px;border-radius:9px;font-weight:700}.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn:disabled{opacity:.5;cursor:not-allowed}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.stat{padding:19px}.stat-head{display:flex;justify-content:space-between;align-items:center}.stat h3{font-size:14px;margin:0;font-weight:600}.stat .num{font-size:29px;font-weight:800;margin-top:8px}.stat .trend{font-size:12px;color:var(--muted);margin-top:8px}.stat-icon{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-size:20px}.stat.danger .stat-icon{background:var(--danger-soft);color:var(--danger)}.stat.success .stat-icon{background:var(--success-soft);color:var(--success)}.stat.warning .stat-icon{background:var(--warning-soft);color:var(--warning)}
.grid2{display:grid;grid-template-columns:1.35fr 1fr;gap:18px;margin-top:18px}.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;margin-top:18px}.card-head{padding:17px 19px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.card-head h2{font-size:16px;margin:0}.link{color:var(--primary);font-size:13px;border:0;background:transparent}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}.table th{color:var(--muted);font-weight:600}.table tr:last-child td{border-bottom:0}.task-link{font-weight:700;cursor:pointer}.task-link:hover{color:var(--primary)}.priority,.status,.tag{display:inline-flex;align-items:center;gap:5px;border-radius:7px;padding:5px 8px;font-size:11px;font-weight:700;white-space:nowrap}.critical{background:var(--danger-soft);color:var(--danger)}.high{background:var(--warning-soft);color:#b77900}.medium{background:#fff8d9;color:#a16207}.low{background:var(--success-soft);color:#15803d}.status.new{background:var(--primary-soft);color:var(--primary)}.status.work{background:#fff7ed;color:#c2410c}.status.review{background:#f5f3ff;color:#7c3aed}.status.done{background:var(--success-soft);color:#15803d}.status.closed{background:var(--surface-2);color:var(--muted)}
.list{padding:7px 18px}.list-row{display:grid;grid-template-columns:58px 1fr auto;gap:12px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border-bottom:0}.muted{color:var(--muted)}.deadline{font-size:12px;color:var(--danger);font-weight:700}.deadline.soon{color:#d97706}
.workload{padding:13px 18px}.person{margin-bottom:14px}.person-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:7px}.bar{height:7px;border-radius:999px;background:var(--surface-2);overflow:hidden}.bar i{display:block;height:100%;border-radius:inherit;background:var(--primary)}.bar.over i{background:var(--danger)}
.activity{padding:7px 18px}.activity-row{display:flex;gap:10px;padding:12px 0;border-bottom:1px solid var(--line);font-size:12px}.activity-row:last-child{border-bottom:0}.activity-row .avatar{width:28px;height:28px;min-width:28px;font-size:10px}
.page-card{padding:0}.filters{display:flex;gap:8px;flex-wrap:wrap;padding:16px;border-bottom:1px solid var(--line)}.filters input,.filters select,.form input,.form select,.form textarea{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:9px;padding:10px 12px;outline:none}.filters input{min-width:260px;flex:1}.filters input:focus,.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--primary)}
.form{display:grid;gap:14px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:6px}.field label{font-size:12px;font-weight:700}.field small{color:var(--muted)}.form textarea{min-height:150px;resize:vertical}.form-actions{display:flex;justify-content:flex-end;gap:8px}
.task-layout{display:grid;grid-template-columns:1fr 330px;gap:18px}.task-main{padding:22px}.task-side{padding:18px;height:max-content}.task-number{color:var(--muted);font-size:13px;font-weight:700}.task-title{font-size:26px;margin:5px 0 16px}.task-meta{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}.description{line-height:1.7}.attachments{display:grid;gap:8px;margin-top:18px}.file{border:1px solid var(--line);border-radius:9px;padding:10px 12px;display:flex;justify-content:space-between;align-items:center}.comments{margin-top:28px}.comment{display:flex;gap:10px;margin:15px 0}.comment-body{background:var(--surface-2);border-radius:11px;padding:10px 12px;flex:1}.comment-body b{font-size:12px}.comment-body p{margin:5px 0 0;line-height:1.5;font-size:13px}.side-item{padding:12px 0;border-bottom:1px solid var(--line)}.side-item:last-child{border-bottom:0}.side-label{font-size:11px;color:var(--muted);margin-bottom:4px}.side-value{font-weight:700;font-size:13px}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);display:grid;place-items:center;padding:20px;z-index:50}.modal-box{background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:16px;box-shadow:0 25px 80px rgba(0,0,0,.25);width:min(760px,100%);max-height:90vh;overflow:auto}.modal-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.modal-head h2{margin:0;font-size:19px}.modal-body{padding:20px}.close{border:0;background:transparent;font-size:23px;color:var(--muted)}
.login{min-height:100vh;display:grid;place-items:center;padding:20px;background:var(--bg)}.login-box{width:min(430px,100%);background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow)}.login-brand{font-size:35px;font-weight:800;letter-spacing:-1.8px}.login-product{font-weight:700;margin-top:4px;color:var(--muted)}.login h1{font-size:21px;margin:30px 0 18px}.hint{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.6}
.empty{text-align:center;padding:45px;color:var(--muted)}.toast{position:fixed;right:22px;bottom:22px;background:#111827;color:#fff;padding:12px 15px;border-radius:10px;z-index:100;box-shadow:0 10px 30px rgba(0,0,0,.2)}
@media(max-width:1100px){.stats{grid-template-columns:repeat(3,1fr)}.grid2,.task-layout{grid-template-columns:1fr}.grid3{grid-template-columns:1fr 1fr}.sidebar{width:220px}.app{grid-template-columns:220px 1fr}}
@media(max-width:800px){.app{display:block}.sidebar{height:auto;position:static;border-right:0;border-bottom:1px solid var(--line)}.nav{display:grid;grid-template-columns:repeat(2,1fr)}.quick{display:none}.topbar{position:static;padding:12px 16px;height:auto;flex-wrap:wrap}.top-title{order:1}.search{order:3;flex-basis:100%;max-width:none}.top-actions{order:2}.content{padding:16px}.stats{grid-template-columns:1fr 1fr}.grid3{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}
@media(max-width:520px){.stats{grid-template-columns:1fr}.nav{grid-template-columns:1fr}.user-menu div:not(.avatar){display:none}.table th:nth-child(n+4),.table td:nth-child(n+4){display:none}.task-title{font-size:21px}}