:root{--bg:#0f1115;--panel:#171a21;--panel-2:#1e222b;--border:#2a2f3a;--text:#e6e9ef;--muted:#9aa3b2;--accent:#5b8cff;--accent-2:#7c5cff;--danger:#ff5c7c}*{box-sizing:border-box}body,html{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:var(--accent);text-decoration:none}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:8px 14px;border-radius:8px;transition:background .15s,border-color .15s}button:hover{background:#262b36}button.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff;font-weight:600}button.primary:hover{filter:brightness(1.08)}input{font:inherit;background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:8px;width:100%}input:focus{outline:none;border-color:var(--accent)}.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{border:1px solid var(--border);border-radius:14px;padding:28px}.card,.topbar{background:var(--panel)}.topbar{display:flex;align-items:center;gap:16px;padding:12px 20px;border-bottom:1px solid var(--border)}.topbar .brand{font-weight:800;font-size:18px;letter-spacing:.5px}.topbar .spacer{flex:1 1}.brand-gradient{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.muted{color:var(--muted)}.row{gap:10px;align-items:center}.row,.stack{display:flex}.stack{flex-direction:column;gap:12px}.grid-boards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:16px;gap:16px;padding:24px}.board-tile{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;min-height:110px;display:flex;flex-direction:column;justify-content:space-between;transition:border-color .15s,transform .1s}.board-tile:hover{border-color:var(--accent);transform:translateY(-2px)}.error{color:var(--danger);font-size:14px}.tab{padding:6px 14px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2)}.tab.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff}