* { box-sizing: border-box; margin: 0; padding: 0; }
:root{
  --bg:#f4f6fb; --panel:#fff; --line:#e6e9f0; --text:#1f2a44; --muted:#7a86a1;
  --primary:#1f5eff; --primary-d:#1748cc; --red:#e23b3b; --green:#1fa971; --amber:#f0a020;
  --shadow:0 2px 10px rgba(20,40,90,.06);
}
body{font-family:-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;}
.hidden{display:none!important;}
button{cursor:pointer;font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:14px;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);width:100%;outline:none;}
input:focus,select:focus,textarea:focus{border-color:var(--primary);}
button.primary{background:var(--primary);color:#fff;border:none;padding:9px 16px;border-radius:8px;font-weight:600;}
button.primary:hover{background:var(--primary-d);}
button.ghost{background:#fff;color:var(--text);border:1px solid var(--line);padding:8px 14px;border-radius:8px;}
button.ghost:hover{border-color:var(--primary);color:var(--primary);}
button.danger{background:#fff;color:var(--red);border:1px solid #f3c2c2;padding:7px 12px;border-radius:8px;}
button.danger:hover{background:#fdecec;}
.muted{color:var(--muted);} .red{color:var(--red);} .green{color:var(--green);} .amber{color:var(--amber);}

.login-wrap{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1f5eff 0%,#1748cc 100%);}
.login-card{background:#fff;width:360px;max-width:92vw;border-radius:16px;padding:38px 32px;box-shadow:0 20px 60px rgba(0,0,0,.25);text-align:center;}
.brand .logo{font-size:46px;} .brand h1{font-size:24px;margin-top:6px;} .brand p{color:var(--muted);font-size:13px;margin-bottom:22px;}
#loginForm{display:flex;flex-direction:column;gap:12px;}
#loginForm button{margin-top:6px;background:var(--primary);color:#fff;border:none;padding:11px;border-radius:9px;font-size:15px;font-weight:700;}
#loginForm button:hover{background:var(--primary-d);}
.err{color:var(--red);font-size:13px;min-height:18px;}
.hint{margin-top:16px;color:var(--muted);font-size:12px;}

.app{display:flex;height:100vh;}
.sidebar{width:230px;background:#0f1b3d;color:#cdd6f0;display:flex;flex-direction:column;flex-shrink:0;}
.side-brand{padding:18px 20px;font-weight:800;font-size:18px;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);}
.sidebar nav{flex:1;padding:10px 0;overflow-y:auto;}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 20px;color:#aeb9db;cursor:pointer;font-size:14px;border-left:3px solid transparent;}
.nav-item:hover{background:rgba(255,255,255,.05);color:#fff;}
.nav-item.active{background:rgba(31,94,255,.18);color:#fff;border-left-color:var(--primary);}
.side-foot{padding:14px 16px;border-top:1px solid rgba(255,255,255,.08);}
.user-box{font-size:13px;color:#cdd6f0;margin-bottom:8px;line-height:1.4;}
.logout{width:100%;background:rgba(255,255,255,.08);color:#cdd6f0;border:none;padding:8px;border-radius:8px;}
.logout:hover{background:rgba(255,255,255,.15);}

.main{flex:1;display:flex;flex-direction:column;overflow:hidden;}
.topbar{height:60px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;flex-shrink:0;}
.page-title{font-size:18px;font-weight:700;}
.todo-badge{background:#fff2f2;color:var(--red);border:1px solid #f3c2c2;padding:6px 12px;border-radius:20px;font-size:13px;}
.todo-badge b{font-size:15px;}
.content{flex:1;overflow-y:auto;padding:22px 24px;}

.grid{display:grid;gap:16px;}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:18px;}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;box-shadow:var(--shadow);}
.card .k{color:var(--muted);font-size:13px;}
.card .v{font-size:26px;font-weight:800;margin-top:4px;}
.card.red .v{color:var(--red);} .card.green .v{color:var(--green);} .card.blue .v{color:var(--primary);} .card.amber .v{color:var(--amber);}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);margin-bottom:16px;}
.panel h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}

table{width:100%;border-collapse:collapse;font-size:13px;}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);}
th{color:var(--muted);font-weight:600;background:#fafbfe;position:sticky;top:0;}
tbody tr:hover{background:#f7f9ff;}
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;background:#eef2ff;color:var(--primary);}
.tag.red{background:#fdecec;color:var(--red);} .tag.green{background:#e8f7f0;color:var(--green);} .tag.amber{background:#fef4e2;color:var(--amber);} .tag.gray{background:#eef0f4;color:var(--muted);}
.table-wrap{overflow-x:auto;}
.toolbar{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap;align-items:center;}
.toolbar input,.toolbar select{max-width:220px;}
.spacer{flex:1;}

.todo-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;margin-bottom:9px;background:#fff;}
.todo-item.overdue{border-color:#f3c2c2;background:#fff6f6;}
.todo-item .dot{width:9px;height:9px;border-radius:50%;background:var(--primary);flex-shrink:0;}
.todo-item.overdue .dot{background:var(--red);}
.todo-item .t-type{font-size:12px;color:var(--muted);}
.todo-item .t-text{font-weight:600;}

.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:8px;top:4px;bottom:4px;width:2px;background:var(--line);}
.tl-item{position:relative;padding:0 0 18px 6px;}
.tl-item::before{content:"";position:absolute;left:-22px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--line);}
.tl-item.done::before{background:var(--green);box-shadow:0 0 0 3px #e8f7f0;}
.tl-item .tl-label{font-weight:700;}
.tl-item .tl-meta{color:var(--muted);font-size:12px;margin-top:2px;}

.modal{position:fixed;inset:0;background:rgba(15,27,61,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px;}
.modal-box{background:#fff;width:560px;max-width:96vw;max-height:90vh;overflow-y:auto;border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line);font-weight:700;font-size:16px;}
.modal-head button{background:none;border:none;font-size:18px;color:var(--muted);}
.modal-body{padding:20px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.form-grid label{font-size:12px;color:var(--muted);display:block;margin-bottom:4px;}

.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#0f1b3d;color:#fff;padding:11px 20px;border-radius:10px;z-index:100;box-shadow:0 8px 24px rgba(0,0,0,.25);font-size:14px;}
.toast.err{background:var(--red);}
.empty{text-align:center;color:var(--muted);padding:40px 0;}
@media(max-width:760px){.sidebar{width:64px;}.side-brand,.user-box{font-size:0;}.nav-item span:last-child{display:none;}.row2,.form-grid{grid-template-columns:1fr;}}

.tl-item.overdue::before{background:#e23b3b;box-shadow:0 0 0 3px #fde8e8;}
.tl-item.overdue .tl-label{color:#e23b3b;}