:root {
    --bg: #b7e3e3;
    --panel: #111827;
    --panel-2: #1f2937;
    --text: #1f1f1f;
    --muted: #94a3b8;
    --brand: #b7e3e3;
    --brand-dark: #59bebe;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border: rgba(255,255,255,.08);
    --card: #ffffff;
    --card-text: #0f172a;
    --shadow: 0 20px 40px rgba(2,6,23,.15);
}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#f8fafc;color:#0f172a}
a{text-decoration:none;color:inherit}
.app-shell{display:flex;min-height:100vh}
.sidebar {
    width: 250px;
    background: linear-gradient(180deg,var(--bg),#b7e3e3);
    color: var(--text);
    padding: 24px;
    position: sticky;
    top: 0;
    height: 100vh
}
.brand h1{margin:0;font-size:28px}.brand p{margin:6px 0 24px;color:var(--muted)}.sidebar nav{display:flex;flex-direction:column;gap:10px}.sidebar nav a{padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.03)}.sidebar nav a:hover{background:rgba(255,255,255,.09)}
.main-content{flex:1;padding:28px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.subtle{color:#64748b}.user-chip{background:#fff;padding:12px 16px;border-radius:14px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.auth-layout{max-width:520px;margin:0 auto;display:flex;flex-direction:column;justify-content:center}.auth-card,.card{background:#fff;border-radius:20px;padding:24px;box-shadow:var(--shadow);border:1px solid #e2e8f0}.grid{display:grid;gap:20px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.stat-card{background:#fff;padding:22px;border-radius:20px;box-shadow:var(--shadow)}.stat-card h3{margin:0 0 8px;font-size:14px;color:#64748b;text-transform:uppercase;letter-spacing:.08em}.stat-card .value{font-size:32px;font-weight:700}
.btn{display:inline-block;border:none;border-radius:12px;padding:12px 16px;font-weight:700;cursor:pointer}.btn-primary{background:var(--brand);color:#161616}.btn-primary:hover{background:var(--brand-dark)}.btn-secondary{background:#e2e8f0}.btn-danger{background:var(--danger);color:#fff}.btn-warning{background:var(--warning);color:#fff}
form{display:grid;gap:14px}label{font-weight:700;font-size:14px}input,select,textarea{width:100%;padding:12px 14px;border:1px solid #cbd5e1;border-radius:12px;background:#fff}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}.table th,.table td{padding:14px;border-bottom:1px solid #e2e8f0;text-align:left}.table th{background:#f8fafc;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:#475569}
.alert{padding:14px 16px;border-radius:14px;margin-bottom:18px}.alert.error{background:#fee2e2;color:#991b1b}.alert.success{background:#dcfce7;color:#166534}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}.badge.success{background:#dcfce7;color:#166534}.badge.warning{background:#fef3c7;color:#92400e}.badge.muted{background:#e2e8f0;color:#334155}
.actions{display:flex;gap:10px;flex-wrap:wrap}.split{display:flex;justify-content:space-between;align-items:center;gap:16px}
.hero {
    background: linear-gradient(135deg,#b7e3e3,#b7e3e3);
    color: #1f1f1f;
    padding: 24px;
    border-radius: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px
}
@media (max-width: 980px){.sidebar{display:none}.main-content{padding:18px}.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.topbar,.split{flex-direction:column;align-items:flex-start}}