*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{color:#e6edf3;background:#0d1117;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:#4a9eff;text-decoration:none}button{cursor:pointer;touch-action:manipulation;border:none;border-radius:6px;min-height:40px;padding:8px 18px;font-size:14px;font-weight:600;transition:opacity .15s}button:hover{opacity:.85}button:active{opacity:.7}button:disabled{opacity:.4;cursor:not-allowed}input{color:#e6edf3;background:#161b22;border:1px solid #30363d;border-radius:6px;outline:none;width:100%;padding:10px 14px;font-size:16px}input:focus{border-color:#4a9eff}.nav{z-index:100;background:#111827;border-bottom:1px solid #1f2937;justify-content:space-between;align-items:center;padding:12px 24px;display:flex;position:sticky;top:0}.nav-logo{color:#4a9eff;font-size:18px;font-weight:700}.container{max-width:960px;margin:0 auto;padding:24px 16px}.btn-primary{color:#fff;background:#4a9eff}.btn-danger{color:#fff;background:#ef4444;min-height:32px;padding:4px 10px;font-size:12px}.btn-ghost{color:#4a9eff;background:0 0;border:1px solid #4a9eff}.card{background:#111827;border:1px solid #1f2937;border-radius:10px;padding:20px}.badge{color:#4a9eff;background:#1e3a5f;border-radius:12px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-block}.error-msg{color:#ef4444;background:#2d1515;border:1px solid #ef4444;border-radius:6px;margin-top:12px;padding:10px 14px;font-size:14px}@media (width<=600px){.container{padding:16px 12px}.nav{padding:10px 14px}.nav-logo{font-size:16px}.admin-col-name,.admin-col-gender,.admin-col-date{display:none}.card{padding:16px}}