:root{--color-primary: #82cf00;--color-primary-dark: #67a600;--color-text: #1f2937;--color-muted: #6b7280;--color-bg: #ffffff;--color-bg-alt: #f7f8f6;--color-border: #e5e7eb;--radius: 10px;--font: "Segoe UI", Tahoma, Arial, sans-serif;--sidebar-w: 230px}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;min-height:100%}body{font-family:var(--font);color:var(--color-text);background:var(--color-bg-alt)}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}.layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);background:#fff;border-right:1px solid var(--color-border);display:flex;flex-direction:column}.sidebar-logo{display:flex;align-items:center;gap:8px;padding:20px 16px;font-weight:700}.sidebar-logo img{height:32px}.sidebar nav{display:flex;flex-direction:column;padding:8px;gap:4px;flex:1}.sidebar nav a{padding:10px 12px;border-radius:8px;font-size:14px;font-weight:500;color:var(--color-muted)}.sidebar nav a.active,.sidebar nav a:hover{background:var(--color-bg-alt);color:var(--color-text)}.content{flex:1;padding:30px;max-width:1100px}.btn{display:inline-block;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius);padding:9px 18px;font-weight:600;font-size:14px}.btn.btn-outline{background:transparent;color:var(--color-primary-dark);border:1px solid var(--color-border)}.btn.btn-danger{background:#dc2626}.card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:20px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--color-border)}th{color:var(--color-muted);font-weight:600}.form-group{margin-bottom:14px}.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:13px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--color-bg-alt)}.badge.on{background:#dcfce7;color:#16a34a}.badge.off{background:#fee2e2;color:#dc2626}.error-text{color:#dc2626;font-size:14px;margin-top:8px}.switch-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--color-border)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}.stat-card{padding:20px}.stat-card .value{font-size:26px;font-weight:700}.stat-card .label{color:var(--color-muted);font-size:13px}