:root{color-scheme:dark;--bg:#000;--card:#111;--border:#222;--text:#eee;--text-dim:#888;--accent:#0af;--danger:#ff453a}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{background:var(--bg);color:var(--text);font-family:-apple-system,system-ui,sans-serif;margin:0;padding:0;display:flex;justify-content:center}.app{width:100%;max-width:680px;padding:1.2rem 1rem 3.5rem}h1{font-size:24px;margin:0 0 .4rem}.subtitle{color:var(--text-dim);margin-bottom:1rem;font-size:14px;word-break:break-all}.input-row{display:flex;gap:.6rem;margin-bottom:1rem}.input-row input{flex:1;padding:.6rem;font-size:15px;border-radius:10px;border:1px solid var(--border);background:#111;color:var(--text)}.input-row button{padding:.6rem 1rem;font-size:15px;border-radius:10px;border:none;background:var(--accent);color:#000;font-weight:600;cursor:pointer}.status{margin-top:.3rem;font-size:12px;color:var(--text-dim)}.error{color:var(--danger);font-size:13px;margin-top:.3rem}.columns{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem;margin-top:1rem}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:.9rem;transition:.15s}.card:hover{transform:translateY(-2px);background:#141414}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.5rem}.card h2{font-size:14px;margin:0;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim)}.pill{display:inline-block;padding:.1rem .45rem;border-radius:999px;background:#222;font-size:11px;margin-left:.3rem;color:var(--text-dim)}.delete-array{font-size:18px;color:var(--danger);cursor:pointer;padding:0 6px}ul{list-style:none;padding:0;margin:0}.item{display:flex;align-items:center;justify-content:space-between;background:#000;border:1px solid var(--border);border-radius:10px;padding:.55rem .7rem;margin-bottom:6px;font-size:14px;word-break:break-all;gap:.5rem}.item-text{flex:1}.item button{background:transparent;border:none;color:var(--danger);padding:.2rem;border-radius:999px;cursor:pointer}.item button:hover{background:rgba(255,69,58,.12)}.item button span{font-size:16px}.new-array-box{margin-top:1.2rem;padding:1rem;background:#111;border:1px solid #222;border-radius:12px}.new-array-box h2{font-size:14px;margin:0 0 .6rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim)}.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px);transition:.2s;z-index:999}.modal.hidden{opacity:0;pointer-events:none}.modal-box{background:#111;border:1px solid #333;padding:1rem;border-radius:12px;width:90%;max-width:360px;text-align:center}.modal-text{font-size:15px;margin-bottom:1rem;white-space:pre-line}.modal-actions{display:flex;justify-content:center;gap:.8rem}.modal-actions button{padding:.5rem 1rem;border-radius:8px;border:none;font-size:14px;cursor:pointer}#confirm-cancel{background:#333;color:#eee}#confirm-ok{background:var(--danger);color:#fff}.snackbar{position:fixed;left:50%;bottom:1rem;transform:translateX(-50%);background:#111;color:var(--text);border-radius:999px;padding:.55rem .9rem;border:1px solid #333;display:flex;align-items:center;gap:.7rem;font-size:13px;box-shadow:0 8px 20px rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:.2s;z-index:998}.snackbar.show{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}.snackbar button{background:#333;color:#fff;border:none;border-radius:999px;padding:.3rem .7rem;font-size:12px;cursor:pointer}@media(max-width:480px){.app{padding:1rem .7rem 3.5rem;max-width:100%}h1{font-size:22px}.item{font-size:13px}}