.text-gradient-amber{background:linear-gradient(135deg,#f59e0b,#ef4444);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}
.tool-container{max-width:800px;margin:0 auto;padding:110px 24px 60px}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);text-decoration:none;font-weight:500;margin-bottom:16px;transition:all .3s}
.back-link:hover{color:#fbbf24;transform:translateX(-4px)}
.back-link svg{width:18px;height:18px;fill:currentColor}
.tool-page-header{text-align:center;margin-bottom:28px}
.tool-page-header h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;margin:16px 0 12px;color:var(--text-primary)}
.tool-page-header p{color:var(--text-secondary);max-width:680px;margin:0 auto;line-height:1.6}
.uuid-type-bar{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:20px;background:var(--surface-light);border:1px solid var(--border-color);border-radius:14px;padding:14px 18px}
.segmented{display:inline-flex;background:rgba(0,0,0,.15);border:1px solid var(--border-color);border-radius:10px;padding:3px;gap:2px}
.seg-btn{padding:7px 14px;border:none;background:transparent;color:var(--text-secondary);font-weight:600;font-size:.85rem;border-radius:7px;cursor:pointer;transition:all .2s;font-family:inherit}
.seg-btn:hover{color:var(--text-primary)}
.seg-btn.active{background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;box-shadow:0 2px 10px rgba(245,158,11,.35)}
.ctrl-label{font-size:.88rem;font-weight:600;color:var(--text-secondary)}
.count-input{width:70px;padding:6px 10px;border-radius:6px;border:1px solid var(--border-color);background:rgba(0,0,0,.2);color:var(--text-primary);font-size:.85rem;font-family:inherit;outline:none;text-align:center}
.action-btn-sm{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:8px;border:1px solid var(--border-color);background:transparent;color:var(--text-secondary);font-size:.82rem;font-weight:500;cursor:pointer;transition:all .2s;font-family:inherit}
.action-btn-sm:hover{border-color:var(--primary-color);color:var(--primary-color);background:rgba(99,102,241,.08)}
.uuid-list{display:flex;flex-direction:column;gap:8px}
.uuid-item{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:8px;background:rgba(0,0,0,.12);border:1px solid var(--border-color)}
.uuid-code{flex:1;font-family:'JetBrains Mono',monospace;font-size:.85rem;color:#22c55e;word-break:break-all}
.copy-single{background:transparent;border:none;cursor:pointer;font-size:1rem;padding:0 4px;opacity:.6;transition:opacity .2s}
.copy-single:hover{opacity:1}
.uuid-input-row{display:flex;gap:8px;align-items:center;margin-top:12px}
.url-input{flex:1;padding:12px 14px;border-radius:8px;border:1px solid var(--border-color);background:rgba(0,0,0,.2);color:var(--text-primary);font-family:'JetBrains Mono',monospace;font-size:.9rem;outline:none}
.url-input:focus{border-color:#f59e0b}
.decode-result{margin-top:12px;padding:14px;background:rgba(0,0,0,.15);border-radius:8px;color:var(--text-secondary);font-size:.9rem;min-height:40px}
@media(max-width:768px){.uuid-type-bar{flex-direction:column;align-items:stretch}.tool-container{padding:90px 14px 40px}}