:root{--bg: #0f172a;--bg-side: #111827;--surface: #ffffff;--text: #1f2937;--muted: #6b7280;--brand: #2563eb;--brand-soft: #eff6ff;--border: #e5e7eb;--content-bg: #f8fafc}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;color:var(--text);background:var(--content-bg)}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--bg-side);color:#e5e7eb;display:flex;flex-direction:column;padding:20px 14px}.sidebar__brand{font-weight:700;font-size:18px;letter-spacing:.3px;padding:6px 10px 18px}.sidebar__nav{display:flex;flex-direction:column;gap:2px;flex:1}.nav-item{display:block;padding:10px 12px;border-radius:8px;color:#cbd5e1;text-decoration:none;font-size:14px}.nav-item:hover{background:#ffffff0f;color:#fff}.nav-item--active{background:var(--brand);color:#fff}.sidebar__user{border-top:1px solid rgba(255,255,255,.08);padding-top:14px;font-size:13px;color:#94a3b8}.sidebar__user-nome{color:#e5e7eb;font-weight:600}.sidebar__user-nivel{margin:2px 0 8px}.btn-link{background:none;border:none;color:#93c5fd;cursor:pointer;padding:0;font-size:13px}.content{background:var(--content-bg);padding:32px 40px;overflow:auto}.page h1{margin:0 0 6px;font-size:24px}.page__hint{color:var(--muted);margin:0 0 20px;max-width:60ch}.page__placeholder{background:var(--surface);border:1px dashed var(--border);border-radius:12px;padding:40px;color:var(--muted);text-align:center}.tela-status{padding:40px;color:var(--muted);font-size:15px}.sidebar__dev{background:#ffffff0d;border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:8px 10px;margin-bottom:14px;font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:#94a3b8}.sidebar__dev label{display:block;margin-bottom:5px}.sidebar__dev select{width:100%;background:#0b1220;color:#e5e7eb;border:1px solid rgba(255,255,255,.14);border-radius:6px;padding:6px 8px;font-size:13px;text-transform:none;letter-spacing:0}