:root{--bg:#0b0b0c;--accent:#2dd4bf;--muted:#cfcfcf}*{box-sizing:border-box;font-family:Inter, Arial, sans-serif}body{margin:0;background:linear-gradient(180deg,#0b0b0c,#151515);color:var(--muted)}.wrap{display:flex;min-height:100vh}.sidebar{width:260px;background:linear-gradient(180deg,#0f0f0f,#111);padding:24px}.brand{font-weight:700;color:white;font-size:20px;display:flex;align-items:center;gap:8px}.brand .logo{background:linear-gradient(90deg,var(--accent),#06b6d4);padding:6px;border-radius:6px;color:#fff;font-weight:800}.sidebar nav{margin-top:20px;display:flex;flex-direction:column;gap:10px}.sidebar a{color:#ddd;padding:10px;border-radius:8px;cursor:pointer}.sidebar a.active{background:linear-gradient(90deg,var(--accent),#06b6d4);color:white}.main{flex:1;padding:18px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;margin-top:12px}.card{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(0,0,0,0.3));padding:18px;border-radius:14px;color:#fff}.auth{max-width:420px;margin:60px auto}.container{display:flex;min-height:100vh;align-items:center;justify-content:center}.card.auth input{width:100%;padding:10px;margin:8px 0;border-radius:6px;border:1px solid #333;background:#0b0b0b;color:#fff}.card.auth button{background:linear-gradient(90deg,var(--accent),#06b6d4);border:none;color:white;padding:10px 14px;border-radius:8px;cursor:pointer}.error{background:#5b1b1b;color:#fff;padding:8px;border-radius:6px;margin-bottom:8px}