:root{--bg: #0f1419;--surface: #1a2332;--surface2: #243044;--border: #2d3a4f;--text: #e8eef7;--muted: #8b9bb4;--accent: #3ecf8e;--accent2: #2b9a68;--warn: #f5a623;--danger: #e74c3c;--info: #4da3ff;--radius: 12px;font-family:Segoe UI,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app-shell{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);padding:1.25rem;display:flex;flex-direction:column;gap:.5rem}.sidebar .brand{font-weight:700;font-size:1.1rem;margin-bottom:1rem;color:var(--accent)}.sidebar nav a,.sidebar nav button.linkish{display:block;width:100%;text-align:left;padding:.55rem .75rem;border-radius:8px;color:var(--text);background:transparent;border:none;cursor:pointer;font-size:.95rem}.sidebar nav a:hover,.sidebar nav a.active,.sidebar nav button.linkish:hover{background:var(--surface2);text-decoration:none}.main{flex:1;padding:1.5rem 2rem;max-width:1100px}h1{margin:0 0 .25rem;font-size:1.6rem}.sub{color:var(--muted);margin-bottom:1.5rem}.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem}.card h3{margin:0 0 .5rem;font-size:1.05rem}.muted{color:var(--muted);font-size:.9rem}.badge{display:inline-block;padding:.15rem .5rem;border-radius:999px;font-size:.75rem;font-weight:600;background:var(--surface2);color:var(--accent)}.badge.warn{color:var(--warn)}.badge.danger{color:var(--danger)}.badge.info{color:var(--info)}.row{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}btn,button,.btn{background:var(--accent);color:#062016;border:none;border-radius:8px;padding:.55rem 1rem;font-weight:600;cursor:pointer;font-size:.9rem}button.secondary,.btn.secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}button:disabled{opacity:.5;cursor:not-allowed}button.danger{background:var(--danger);color:#fff}input,select,textarea{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.6rem .75rem;color:var(--text);margin-bottom:.75rem}label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:.25rem}.form{max-width:480px}.table{width:100%;border-collapse:collapse;font-size:.9rem}.table th,.table td{text-align:left;padding:.65rem .5rem;border-bottom:1px solid var(--border)}.table th{color:var(--muted);font-weight:600}.stat{font-size:1.6rem;font-weight:700;color:var(--accent)}.login-page{min-height:100vh;display:grid;place-items:center;padding:2rem;background:radial-gradient(ellipse at top,#1a2f24 0%,var(--bg) 55%)}.login-card{width:100%;max-width:420px}.error{color:var(--danger);font-size:.9rem;margin:.5rem 0}.success{color:var(--accent);font-size:.9rem}.demo-box{margin-top:1rem;padding:.75rem;background:var(--bg);border-radius:8px;font-size:.8rem;color:var(--muted)}@media(max-width:720px){.app-shell{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border)}}