*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#f4f7fb;color:#1b1f23}.app-shell{display:flex;min-height:100vh}.sidebar{width:260px;background:#10243e;color:#fff;padding:20px;position:sticky;top:0;height:100vh}.brand{font-size:28px;font-weight:700;margin-bottom:20px}.sidebar nav a{display:block;color:#dce7f8;text-decoration:none;padding:10px 12px;border-radius:8px;margin-bottom:6px}.sidebar nav a:hover{background:#19385d}.main-content{flex:1;padding:0 24px 24px}.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 0;margin-bottom:16px;border-bottom:1px solid #d8e0ea}.card{background:#fff;border-radius:16px;padding:20px;box-shadow:0 5px 20px rgba(0,0,0,.06);margin-bottom:20px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{padding:10px;border-bottom:1px solid #eef2f7;text-align:left;vertical-align:top}.table th{background:#eef4fb}.btn{display:inline-block;background:#1f6feb;color:#fff;text-decoration:none;border:none;border-radius:10px;padding:10px 14px;cursor:pointer}.btn.secondary{background:#6c7a89}.btn.success{background:#198754}.btn.warning{background:#f0ad4e;color:#222}.btn.danger{background:#dc3545}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}input,select,textarea{padding:10px;border:1px solid #c9d4e2;border-radius:10px;background:#fff;width:100%}textarea{min-height:110px}.flash{padding:12px 14px;border-radius:10px;margin-bottom:16px}.flash.success{background:#dcfce7;color:#166534}.flash.warning{background:#fef3c7;color:#92400e}.flash.error{background:#fee2e2;color:#991b1b}.badge{display:inline-block;padding:4px 8px;border-radius:20px;background:#e9eef7;font-size:12px}.login-wrap{max-width:980px;margin:40px auto;display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.hero{background:linear-gradient(135deg,#10243e,#1f6feb);color:#fff;border-radius:20px;padding:32px}.muted{color:#62748a}.kpi{font-size:32px;font-weight:700}@media(max-width:900px){.sidebar{display:none}.main-content{padding:0 16px 16px}.login-wrap{grid-template-columns:1fr}}