:root{--navy:#0b2a52;--navy2:#123a6e;--blue:#0066b3;--cyan:#00aeef;--bg:#eef2f7;--card:#fff;--text:#1e293b;--muted:#64748b;--line:#dbe3ee;--red:#dc2626;--green:#059669;--amber:#d97706;--radius:12px}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
button{font-family:inherit;cursor:pointer}
.btn{display:inline-block;border:1px solid var(--blue);background:var(--blue);color:#fff;padding:7px 14px;border-radius:8px;font-size:13px;font-weight:600}
.btn:hover{background:var(--navy);border-color:var(--navy)}
.btn.secondary{background:#fff;color:var(--blue)}.btn.secondary:hover{background:#e0f2fe}
.btn.danger{background:var(--red);border-color:var(--red)}.btn.danger:hover{background:#991b1b}
.btn.success{background:var(--green);border-color:var(--green)}
.btn.small{padding:4px 10px;font-size:12px;border-radius:6px}
.btn:disabled{opacity:.5;cursor:not-allowed}
/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--navy) 0%,var(--blue) 60%,var(--cyan) 130%);padding:20px}
.login-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.3);padding:36px;width:100%;max-width:420px}
.login-card .logo{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;margin:0 auto 14px}
.login-card h1{font-size:20px;text-align:center;color:var(--navy);margin:0 0 4px}
.login-card .sub{text-align:center;color:var(--muted);margin:0 0 22px;font-size:13px}
.field{margin-bottom:14px}.field label{display:block;font-weight:600;margin-bottom:5px;font-size:13px;color:var(--navy)}
.field input,.field select,.field textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:14px;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--cyan);border-color:var(--blue)}
.login-card .btn{width:100%;padding:11px;font-size:15px}
.login-links{text-align:center;margin-top:16px;font-size:13px}
.demo-hint{background:#f0f9ff;border:1px solid #bae6fd;border-radius:8px;padding:10px;font-size:12px;color:var(--navy);margin-top:16px}
/* Layout */
.layout{display:flex;min-height:100vh}
.sidebar{width:252px;background:var(--navy);color:#cbd5e1;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:40}
.sidebar .brand{padding:18px 16px;border-bottom:1px solid rgba(255,255,255,.12)}
.sidebar .brand .b-name{color:#fff;font-weight:800;font-size:15px;line-height:1.3}
.sidebar .brand .b-sub{font-size:11px;color:#7dd3fc}
.sidebar nav{flex:1;overflow-y:auto;padding:10px 8px}
.nav-group{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:#7dd3fc;padding:12px 10px 4px;font-weight:700}
.nav-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:8px;color:#cbd5e1;cursor:pointer;font-size:13.5px;margin-bottom:2px;border:none;background:none;width:100%;text-align:left}
.nav-item:hover{background:var(--navy2);color:#fff}.nav-item.active{background:var(--blue);color:#fff;font-weight:700}
.sidebar .user-box{padding:14px 16px;border-top:1px solid rgba(255,255,255,.12);font-size:13px}
.sidebar .user-box .u-name{color:#fff;font-weight:700}
.role-badge{display:inline-block;background:var(--cyan);color:var(--navy);font-size:11px;font-weight:700;border-radius:999px;padding:1px 8px;margin-left:6px}
.main{flex:1;margin-left:252px;padding:22px 26px;min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:12px;flex-wrap:wrap}
.topbar h2{margin:0;color:var(--navy);font-size:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:18px;box-shadow:0 1px 3px rgba(11,42,82,.05)}
.card h3{margin:0 0 12px;color:var(--navy);font-size:16px}
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:18px}
.kpi{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;border-radius:var(--radius);padding:18px}
.kpi .k-label{font-size:13px;opacity:.85}.kpi .k-value{font-size:32px;font-weight:800;margin:4px 0}.kpi .k-note{font-size:12px;opacity:.8}
.kpi.cyan{background:linear-gradient(135deg,var(--blue),var(--cyan))}.kpi.green{background:linear-gradient(135deg,#065f46,var(--green))}.kpi.amber{background:linear-gradient(135deg,#92400e,var(--amber))}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{background:var(--navy);color:#fff;text-align:left;padding:9px 10px;font-size:12.5px}
td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
tr:hover td{background:#f8fafc}
.table-wrap{overflow-x:auto}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11.5px;font-weight:700;background:#e0f2fe;color:var(--navy)}
.badge.green{background:#d1fae5;color:#065f46}.badge.amber{background:#fef3c7;color:#92400e}.badge.red{background:#fee2e2;color:#991b1b}.badge.gray{background:#e2e8f0;color:#475569}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.toolbar input,.toolbar select{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:13.5px;background:#fff}
.toolbar .spacer{flex:1}
.actions{white-space:nowrap;display:flex;gap:6px;flex-wrap:wrap}
.money{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
tfoot td{font-weight:800;background:#f0f9ff}
/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(11,42,82,.55);display:none;align-items:flex-start;justify-content:center;z-index:100;overflow-y:auto;padding:30px 14px}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:14px;width:100%;max-width:560px;padding:24px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.modal.wide{max-width:860px}
.modal h3{margin:0 0 16px;color:var(--navy)}
.modal .modal-foot{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
@media(max-width:640px){.grid2{grid-template-columns:1fr}}
/* Toast */
#toast-wrap{position:fixed;top:16px;right:16px;z-index:200;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--navy);color:#fff;padding:11px 16px;border-radius:9px;box-shadow:0 8px 24px rgba(0,0,0,.25);font-size:13.5px;max-width:360px;animation:tin .25s ease}
.toast.success{background:var(--green)}.toast.error{background:var(--red)}
@keyframes tin{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
.empty{color:var(--muted);text-align:center;padding:22px}
.loading{color:var(--muted);padding:22px;text-align:center}
.hidden{display:none!important}
/* Portal */
.portal-header{background:linear-gradient(120deg,var(--navy),var(--blue));color:#fff;padding:26px 20px}
.portal-header .inner{max-width:1080px;margin:0 auto}
.portal-header h1{margin:0;font-size:26px}.portal-header p{margin:4px 0 0;opacity:.85}
.portal-main{max-width:1080px;margin:0 auto;padding:24px 20px}
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;cursor:pointer;box-shadow:0 1px 3px rgba(11,42,82,.05)}
.news-card:hover{border-color:var(--cyan);box-shadow:0 6px 20px rgba(0,102,179,.12)}
.news-card h3{margin:8px 0;color:var(--navy);font-size:16px}
.news-card p{color:var(--muted);margin:0;font-size:13.5px}
.article-full{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;white-space:pre-wrap}
/* Đợt 2: progress, kanban, notifications, tabs */
.progress{background:#e2e8f0;border-radius:999px;height:10px;min-width:90px;overflow:hidden}
.progress-bar{background:linear-gradient(90deg,var(--blue),var(--cyan));height:100%;border-radius:999px}
.kanban{display:grid;grid-template-columns:repeat(5,minmax(210px,1fr));gap:12px;overflow-x:auto;padding-bottom:8px}
.kanban-col{background:#f1f5f9;border:1px solid var(--line);border-radius:12px;padding:10px;min-height:200px}
.kanban-col h4{margin:2px 0 10px;color:var(--navy);font-size:13px;text-transform:uppercase}
.kanban-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px;margin-bottom:10px;box-shadow:0 1px 3px rgba(11,42,82,.06)}
.kanban-card .k-title{font-weight:700;color:var(--navy);margin-bottom:6px}
.kanban-card .k-meta{font-size:12px;color:var(--muted);display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.kanban-card .k-actions{display:flex;justify-content:space-between;margin-top:8px}
.notif-wrap{position:relative}
.notif-dropdown{position:absolute;right:0;top:42px;width:360px;max-width:92vw;max-height:440px;overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 40px rgba(0,0,0,.22);z-index:120;padding:10px}
.notif-dropdown.hidden{display:none}
.notif-item{padding:9px 8px;border-bottom:1px solid var(--line);cursor:pointer;font-size:13px}
.notif-item:hover{background:#f0f9ff}.notif-item.unread{background:#eff6ff;font-weight:600}
.notif-item small{color:var(--muted);display:block;font-weight:400}
.tabs{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.tabs .btn.active{background:var(--navy);border-color:var(--navy)}
@media print{.sidebar,.topbar,.toolbar,.modal-foot,#toast-wrap{display:none!important}.main{margin-left:0}}
@media(max-width:860px){.sidebar{position:static;width:100%}.layout{flex-direction:column}.main{margin-left:0;padding:16px}.kanban{grid-template-columns:repeat(5,220px)}}
/* Đợt 2 bổ sung: Gantt, ký số, work tabs, responsive PWA (J) */
.work-tabs{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.work-tabs .btn.active{background:var(--navy);border-color:var(--navy)}
.gantt{overflow-x:auto;background:#fff}
.gantt-head,.gantt-row{display:flex;align-items:stretch;border-bottom:1px solid var(--line);min-width:760px}
.gantt-label{width:220px;flex:0 0 220px;padding:8px 10px;font-weight:600;color:var(--navy);border-right:1px solid var(--line);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gantt-track{flex:1;position:relative;min-height:38px;background-image:repeating-linear-gradient(to right,transparent 0,transparent calc(100%/var(--weeks,4) - 1px),#eef2f7 calc(100%/var(--weeks,4) - 1px),#eef2f7 calc(100%/var(--weeks,4)))}
.gantt-week{flex:1;text-align:center;font-size:11px;color:var(--muted);padding:6px 2px;border-right:1px solid var(--line)}
.gantt-bar{position:absolute;top:7px;height:24px;border-radius:6px;color:#fff;font-size:11.5px;font-weight:700;display:flex;align-items:center;padding:0 8px;overflow:hidden;white-space:nowrap;background:var(--blue)}
.gantt-bar.st-new{background:#94a3b8}.gantt-bar.st-doing{background:var(--blue)}.gantt-bar.st-review{background:var(--amber)}.gantt-bar.st-done{background:var(--green)}.gantt-bar.st-cancel{background:#cbd5e1;color:#475569}
.gantt-bar.overdue{border:2px solid var(--red);background:#dc2626}
.gantt-today{position:absolute;top:0;bottom:0;width:2px;background:var(--red);z-index:2}
.sign-sim-banner{background:#fef3c7;border:1px solid var(--amber);color:#92400e;border-radius:8px;padding:10px 12px;font-weight:700;margin-bottom:12px}
#menu-toggle{display:none}
@media (max-width: 860px) { .sidebar { position: fixed; transform: translateX(-100%); transition: transform .25s; z-index:90; } .sidebar.open { transform: none; } .main { margin-left: 0; } #menu-toggle{display:inline-block} .gantt-label{width:140px;flex-basis:140px} }