:root{--bg:#0b0f14;--panel:#121a24;--border:#1e2a3a;--text:#e8eef5;--muted:#8fa3b8;--normal:#3dd68c;--caution:#f5c542;--danger:#ff5c5c;--offline:#6b7c8f}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Pretendard,Segoe UI,system-ui,sans-serif}a{color:#6eb5ff}button,input,select{font:inherit}.panel{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:1rem}.btn{background:#2563eb;color:#fff;border:none;border-radius:8px;padding:.6rem 1rem;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.status-normal{color:var(--normal)}.status-caution{color:var(--caution)}.status-danger{color:var(--danger)}.status-offline{color:var(--offline)}.grid-dashboard{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));grid-gap:.75rem;gap:.75rem}.tile{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:.75rem;min-height:100px;display:flex;flex-direction:column;justify-content:space-between}.tile-offline{border-color:var(--offline)}.tile-danger{border-color:var(--danger);box-shadow:0 0 0 1px rgba(255,92,92,.25)}.tile-caution{border-color:var(--caution)}.tile-code{font-weight:700;font-size:.95rem}.tile-meta{font-size:.75rem;color:var(--muted)}.stats-row{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}.stat-box{flex:1 1;min-width:120px;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:.75rem 1rem}.stat-box strong{display:block;font-size:1.5rem}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-form{width:100%;max-width:360px}.login-form label{display:block;margin-bottom:.25rem;color:var(--muted);font-size:.85rem}.login-form input,.login-form select{width:100%;margin-bottom:1rem;padding:.6rem;border-radius:8px;border:1px solid var(--border);background:#0d1219;color:var(--text)}.header-bar{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;border-bottom:1px solid var(--border);background:var(--panel)}.main{padding:1.5rem;max-width:1400px;margin:0 auto}