:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-color:#f8fafc;--card-bg:#fff;--text-main:#0f172a;--text-muted:#64748b;--border-color:#e2e8f0;--danger:#ef4444;--success:#22c55e;--radius-md:.5rem;--radius-lg:1rem}[data-theme=dark]{--bg-color:#0f172a;--card-bg:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#334155}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;transition:background-color .3s,color .3s}a{color:var(--primary);text-decoration:none}button,.btn{background-color:var(--primary);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;padding:.5rem 1rem;font-weight:500;transition:background-color .2s,transform .1s}button:hover,.btn:hover{background-color:var(--primary-hover)}button:active,.btn:active{transform:scale(.98)}button:disabled{opacity:.6;cursor:not-allowed}.input-field{border:1px solid var(--border-color);border-radius:var(--radius-md);background-color:var(--card-bg);width:100%;color:var(--text-main);padding:.75rem;font-size:1rem;transition:border-color .2s,box-shadow .2s}.input-field:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #2563eb33}.card{background-color:var(--card-bg);border-radius:var(--radius-lg);border:1px solid var(--border-color);padding:2rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.glass{-webkit-backdrop-filter:blur(10px);background:#ffffffb3;border:1px solid #ffffff4d}[data-theme=dark] .glass{background:#1e293bb3;border:1px solid #ffffff1a}.flex-center{justify-content:center;align-items:center;display:flex}.form-group{margin-bottom:1.25rem}.form-label{color:var(--text-main);margin-bottom:.5rem;font-weight:500;display:block}.sidebar-link:hover{background-color:var(--primary);color:#fff!important}