:root{
  --bg:#0a0b12; --bg-elevated:#0e1020; --surface:#12142450; --surface-2:#161832;
  --border:#242640; --text-1:#f1f2f8; --text-2:#b7bad4; --text-3:#7a7ea0;
  --cyan:#22d3ee; --magenta:#e879f9; --lime:#a3e635; --amber:#fbbf24; --violet:#a78bfa; --red:#f43f5e;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}
*{box-sizing:border-box;}
body{margin:0;background:var(--bg);color:var(--text-1);font-family:var(--font-sans);font-size:14px;}
a{color:inherit;text-decoration:none;}
.app-shell{display:flex;min-height:100vh;}

/* Sidebar */
.sidebar{width:270px;flex-shrink:0;background:var(--bg-elevated);border-right:1px solid var(--border);height:100vh;overflow-y:auto;position:sticky;top:0;}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:18px 20px;border-bottom:1px solid var(--border);font-weight:700;font-size:16px;}
.sidebar-brand .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--magenta));box-shadow:0 0 12px var(--cyan);}
.nav-label{padding:16px 20px 6px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);}
.nav-group{margin-bottom:2px;}
.nav-parent{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 20px;cursor:pointer;color:var(--text-2);font-size:13.5px;}
.nav-parent:hover{background:var(--surface-2);color:var(--text-1);}
.nav-parent svg{width:16px;height:16px;flex-shrink:0;}
.nav-parent .chev{width:14px;height:14px;transition:transform .15s;opacity:.6;}
.nav-parent.open .chev{transform:rotate(90deg);}
.nav-children{overflow:hidden;}
.nav-child{display:block;padding:7px 20px 7px 52px;font-size:13px;color:var(--text-3);border-left:2px solid transparent;}
.nav-child:hover{color:var(--text-1);}
.nav-child.active{color:var(--cyan);border-left-color:var(--cyan);background:linear-gradient(90deg,rgba(34,211,238,.08),transparent);}
.nav-single{display:flex;align-items:center;gap:10px;padding:10px 20px;font-size:13.5px;color:var(--text-2);}
.nav-single.active,.nav-single:hover{color:var(--cyan);background:var(--surface-2);}
.nav-single svg{width:16px;height:16px;}

/* Topbar */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;border-bottom:1px solid var(--border);background:var(--bg-elevated);position:sticky;top:0;z-index:5;}
.topbar-search{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:7px 12px;font-size:13px;color:var(--text-2);width:280px;}
.topbar-search:focus{outline:none;border-color:var(--cyan);}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--violet));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:#04050a;}

.main{flex:1;min-width:0;}
.content{padding:24px 28px;max-width:1400px;}

/* Cards, tables, forms — mirrors the original mockup component language */
.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px 20px;margin-bottom:18px;}
.card-head{display:flex;align-items:center;justify-content:between;justify-content:space-between;margin-bottom:14px;}
.card-title{font-size:14px;font-weight:600;}
.card-title span{display:block;font-size:11.5px;color:var(--text-3);font-weight:400;margin-top:2px;}
.grid{display:grid;gap:16px;}
.kpi-row{grid-template-columns:repeat(4,1fr);}
.two-col{grid-template-columns:1fr 1fr;}
.form-grid{grid-template-columns:1fr 1fr;}
@media(max-width:900px){.kpi-row{grid-template-columns:repeat(2,1fr);}.two-col,.form-grid{grid-template-columns:1fr;}}

.kpi-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px 18px;}
.kpi-card .label{font-size:12px;color:var(--text-3);}
.kpi-card .value{font-size:24px;font-weight:700;margin-top:6px;}

table{width:100%;border-collapse:collapse;font-size:13px;}
thead th{text-align:left;color:var(--text-3);font-weight:500;font-size:11.5px;letter-spacing:.03em;text-transform:uppercase;padding:8px 10px;border-bottom:1px solid var(--border);}
tbody td{padding:11px 10px;border-bottom:1px solid var(--border);color:var(--text-2);}
tbody tr:hover{background:var(--surface-2);}
.mono{font-family:var(--font-mono);}
.text-3{color:var(--text-3);}
.cell-main{display:flex;align-items:center;gap:8px;}
.cell-avatar{width:26px;height:26px;border-radius:50%;background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-size:10.5px;font-weight:700;}

.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600;}
.badge.lime{background:rgba(163,230,53,.12);color:var(--lime);}
.badge.amber{background:rgba(251,191,36,.12);color:var(--amber);}
.badge.red{background:rgba(244,63,94,.12);color:var(--red);}
.badge.muted{background:rgba(122,126,160,.12);color:var(--text-3);}
.badge.cyan{background:rgba(34,211,238,.12);color:var(--cyan);}

.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600;border:1px solid transparent;cursor:pointer;}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--violet));color:#04050a;}
.btn-ghost{background:var(--surface-2);color:var(--text-2);border-color:var(--border);}
.btn-danger{background:rgba(244,63,94,.15);color:var(--red);border-color:rgba(244,63,94,.3);}
.btn-sm{padding:5px 10px;font-size:12px;}
.btn svg{width:14px;height:14px;}

.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;}
.field label{font-size:12.5px;color:var(--text-2);font-weight:600;}
.field input,.field select,.field textarea{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:9px 11px;color:var(--text-1);font-size:13px;font-family:inherit;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);}
.field .error{color:var(--red);font-size:12px;}
.switch-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border);}
.switch{width:38px;height:22px;border-radius:20px;background:var(--surface-2);position:relative;cursor:pointer;border:1px solid var(--border);}
.switch.on{background:linear-gradient(135deg,var(--cyan),var(--violet));}
.switch::after{content:'';position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.15s;}
.switch.on::after{left:18px;}

.toolbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;}
.toolbar input[type=text],.toolbar input[type=search]{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:8px 12px;color:var(--text-1);font-size:13px;min-width:220px;}
.pagination{display:flex;gap:6px;justify-content:flex-end;margin-top:14px;}
.pagination a,.pagination span{padding:6px 11px;border-radius:6px;font-size:12.5px;background:var(--surface-2);color:var(--text-2);border:1px solid var(--border);}
.pagination a.active{background:linear-gradient(135deg,var(--cyan),var(--violet));color:#04050a;border-color:transparent;}

.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:13px;}
.alert-success{background:rgba(163,230,53,.1);color:var(--lime);border:1px solid rgba(163,230,53,.25);}
.alert-error{background:rgba(244,63,94,.1);color:var(--red);border:1px solid rgba(244,63,94,.25);}

.breadcrumb{font-size:12.5px;color:var(--text-3);margin-bottom:6px;}
.breadcrumb b{color:var(--text-2);}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:20px;gap:16px;}
.page-head h1{font-size:20px;margin:0 0 4px;}
.page-head p{margin:0;color:var(--text-3);font-size:13px;}
.media-grid{grid-template-columns:repeat(4,1fr);}
.media-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden;}
.media-thumb{height:100px;display:flex;align-items:center;justify-content:center;color:var(--text-3);}
.media-thumb svg{width:28px;height:28px;}
.media-info{padding:10px 12px;font-size:12.5px;}
.media-info span{display:block;color:var(--text-3);margin-top:3px;}

.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 30% 20%,rgba(34,211,238,.08),transparent 40%),var(--bg);}
.auth-card{width:380px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:28px 26px;}
.auth-card h1{font-size:18px;margin:0 0 4px;}
.auth-card p.sub{color:var(--text-3);font-size:13px;margin:0 0 20px;}
.auth-links{display:flex;justify-content:space-between;font-size:12.5px;margin-top:14px;}
.auth-links a{color:var(--cyan);}