*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f5f6fa;--sidebar:#1e2530;--sidebar-w:220px;
  --primary:#3b82f6;--primary-hover:#2563eb;
  --danger:#ef4444;--success:#22c55e;--warning:#f59e0b;
  --text:#1e293b;--text-muted:#64748b;
  --border:#e2e8f0;--card:#fff;
  --topbar-h:52px;
}
html{font-size:14px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.5}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

/* Layout */
.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--sidebar);color:#cbd5e1;
  position:fixed;top:0;left:0;bottom:0;display:flex;flex-direction:column;z-index:50}
.sidebar .logo{padding:16px 20px;font-size:1.1rem;font-weight:700;color:#fff;
  border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar nav{flex:1;padding:8px 0}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:10px 20px;
  color:#94a3b8;font-size:.9rem;text-decoration:none;transition:background .15s}
.sidebar nav a:hover,.sidebar nav a.active{background:rgba(255,255,255,.08);color:#fff}
.sidebar nav a.active{border-left:3px solid var(--primary);padding-left:17px}
.sidebar .sidebar-footer{padding:12px 20px;border-top:1px solid rgba(255,255,255,.08);
  font-size:.8rem;color:#64748b}

.main{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column}
.topbar{height:var(--topbar-h);background:var(--card);border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;padding:0 24px;
  position:sticky;top:0;z-index:40}
.topbar .page-title{font-size:1rem;font-weight:600}
.topbar .user-info{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-muted)}
.content{padding:24px;flex:1}

/* Cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:16px}
.card h3{margin-bottom:12px;font-size:1rem}

/* Tables — base */
table{width:100%;border-collapse:collapse}
th,td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--border)}
th{font-weight:600;font-size:.8rem;text-transform:none;letter-spacing:.01em;
  color:var(--text-muted);background:#f8fafc}
tr:hover td{background:#fafbfd}

/* Data table — matrix/report style */
.data-table{font-variant-numeric:tabular-nums}
.data-table th,.data-table td{border-right:1px solid var(--border);padding:7px 10px;white-space:nowrap}
.data-table th:last-child,.data-table td:last-child{border-right:none}
.data-table thead th{background:#f1f5f9;font-weight:700;border-bottom:2px solid #cbd5e1;
  position:sticky;top:0;z-index:2}
.data-table .num{text-align:right}
.data-table .zero{color:#cbd5e1}
.data-table .row-total td{font-weight:700;background:#f1f5f9;border-top:2px solid #94a3b8}
.data-table .col-sep{border-left:2px solid #94a3b8}
.data-table .col-overlap{background:rgba(148,163,184,.08)}
.data-table thead .col-overlap{background:rgba(148,163,184,.15)}
.data-table tr:hover td{background:#f0f4ff}
.data-table .rate-good{color:#16a34a}
.data-table .rate-mid{color:#ca8a04}
.data-table .rate-bad{color:#dc2626}
.data-table .clickable{cursor:pointer;color:var(--primary)}
.data-table .clickable:hover{text-decoration:underline}
.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:.75rem;font-weight:600}
.badge-open{background:#dcfce7;color:#166534}
.badge-closed{background:#fee2e2;color:#991b1b}
.badge-archived{background:#e2e8f0;color:#475569}
.badge-active{background:#dbeafe;color:#1e40af}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border:none;
  border-radius:6px;font-size:.85rem;font-weight:500;cursor:pointer;transition:background .15s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-success{background:var(--success);color:#fff}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{background:#f1f5f9}
.btn-sm{padding:4px 10px;font-size:.8rem}
.btn-icon{padding:4px 8px;font-size:.9rem}

/* Forms */
.form-group{margin-bottom:14px}
.form-group label{display:block;margin-bottom:4px;font-weight:500;font-size:.85rem}
.form-control{width:100%;padding:7px 10px;border:1px solid var(--border);border-radius:6px;
  font-size:.85rem;background:#fff;transition:border-color .15s}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,130,246,.1)}
textarea.form-control{resize:vertical;min-height:80px}
select.form-control{appearance:auto}
.checkbox-row{display:flex;gap:16px;flex-wrap:wrap}
.checkbox-row label{display:flex;align-items:center;gap:4px;font-weight:400;cursor:pointer}

/* Flash */
.flash{padding:10px 16px;border-radius:6px;margin-bottom:16px;font-size:.85rem}
.flash-success{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}
.flash-error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}
.flash-warning{background:#fef3c7;color:#92400e;border:1px solid #fde68a}

/* Modal / Dialog */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;
  align-items:center;justify-content:center;z-index:100}
.modal{background:var(--card);border-radius:10px;padding:24px;max-width:520px;width:90%;
  max-height:80vh;overflow-y:auto;box-shadow:0 20px 40px rgba(0,0,0,.15)}
.modal h3{margin-bottom:16px}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}

/* Toggle switch */
.toggle{position:relative;display:inline-block;width:40px;height:22px}
.toggle input{opacity:0;width:0;height:0}
.toggle .slider{position:absolute;inset:0;background:#cbd5e1;border-radius:22px;cursor:pointer;transition:.2s}
.toggle .slider::before{content:"";position:absolute;height:16px;width:16px;left:3px;bottom:3px;
  background:#fff;border-radius:50%;transition:.2s}
.toggle input:checked+.slider{background:var(--success)}
.toggle input:checked+.slider::before{transform:translateX(18px)}

/* Pagination */
.pagination{display:flex;gap:4px;margin-top:16px;align-items:center}
.pagination a,.pagination span{padding:6px 12px;border:1px solid var(--border);border-radius:4px;
  font-size:.8rem}
.pagination .active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Utility */
.text-muted{color:var(--text-muted)}
.text-danger{color:var(--danger)}
.text-success{color:var(--success)}
.text-right{text-align:right}
.text-center{text-align:center}
.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}
.gap-2{gap:8px}.gap-4{gap:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* Login page */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:linear-gradient(135deg,#1e2530 0%,#2d3748 100%)}
.login-card{background:var(--card);border-radius:12px;padding:40px;text-align:center;
  box-shadow:0 20px 40px rgba(0,0,0,.2);max-width:380px;width:90%}
.login-card h1{font-size:1.6rem;margin-bottom:4px}
.login-card p{color:var(--text-muted);margin-bottom:24px;font-size:.9rem}
.login-card .forbidden{color:var(--danger);margin-top:16px;font-size:.85rem}

/* Detail panel */
.detail-panel{position:fixed;right:0;top:var(--topbar-h);bottom:0;width:420px;
  background:var(--card);border-left:1px solid var(--border);overflow-y:auto;padding:20px;
  box-shadow:-4px 0 12px rgba(0,0,0,.06);z-index:45;transition:transform .2s}
.detail-panel.hidden{transform:translateX(100%)}

/* Progress bar */
.progress{height:6px;background:#e2e8f0;border-radius:3px;overflow:hidden}
.progress-bar{height:100%;background:var(--primary);transition:width .3s}

/* Import wizard */
.wizard-steps{display:flex;gap:4px;margin-bottom:24px}
.wizard-step{flex:1;padding:8px;text-align:center;font-size:.75rem;font-weight:600;
  background:#e2e8f0;border-radius:4px;color:var(--text-muted)}
.wizard-step.active{background:var(--primary);color:#fff}
.wizard-step.done{background:#dcfce7;color:#166534}

/* QR placeholder */
.qr-container{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px}
.invite-code{font-size:2rem;font-weight:700;letter-spacing:.3em;font-family:monospace}

/* Filters bar */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;align-items:flex-end}
.filters .form-group{margin-bottom:0}
.filters .form-control{width:auto;min-width:140px}

/* Responsive */
@media(max-width:768px){
  .sidebar{display:none}
  .main{margin-left:0}
  .detail-panel{width:100%}
  .grid-2{grid-template-columns:1fr}
}