:root{--bg: #0f172a;--panel: #111827;--muted: #8b95a7;--text: #e5e7eb;--accent: #2563eb;--border: #1f2937}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica Neue,Arial,"Apple Color Emoji","Segoe UI Emoji";background:var(--bg);color:var(--text);overflow-x:hidden}.container{margin:0 auto;padding:16px;overflow-x:hidden}.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px}.between{display:flex;align-items:center;justify-content:space-between}.flex{display:flex;align-items:center;gap:8px}.muted{color:var(--muted);font-size:12px}h1{font-size:20px;margin:0 0 8px}h2{font-size:16px;margin:8px 0}label{display:block;font-size:12px;color:var(--muted);margin:8px 0 4px}input[type=text],textarea{width:100%;background:#0b1220;color:var(--text);border:1px solid var(--border);border-radius:6px;padding:10px;outline:none}input[type=text]::placeholder,textarea::placeholder{color:#6b7280}textarea{min-height:140px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:13px}.btn{background:var(--accent);border:none;color:#fff;padding:8px 12px;border-radius:6px;cursor:pointer;font-weight:600}.btn.secondary{background:#334155}.btn:disabled{opacity:.6;cursor:not-allowed}.switch{width:44px;height:24px;background:#374151;border-radius:12px;position:relative;cursor:pointer;margin-right:8px}.switch .knob{width:18px;height:18px;background:#fff;border-radius:50%;position:absolute;top:3px;left:3px;transition:left .15s ease}.switch.on{background:#16a34a}.switch.on .knob{left:23px}.list{display:flex;flex-direction:column;gap:8px}.item{background:#0b1220;border:1px solid var(--border);border-radius:6px;padding:10px}.drag-handle{cursor:grab;-webkit-user-select:none;user-select:none;color:var(--muted)}pre{background:#0b1220;border:1px solid var(--border);border-radius:6px;padding:12px;overflow:auto}@media (max-width: 960px){.row{grid-template-columns:1fr}}.scroll-to-top-btn{position:fixed;right:20px;bottom:20px;z-index:1000;background:var(--accent);color:#fff;border:none;border-radius:999px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px #0006}.scroll-to-top-btn:hover{background:#1d4ed8}.scroll-to-top-icon{font-size:20px;line-height:1}.app-footer{margin-top:16px;text-align:right;font-size:12px;color:var(--muted)}.app-footer-text{opacity:.8}