.utm-layout{flex-direction:column;gap:24px;width:100%;display:flex}.utm-builder{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px 16px;padding:24px;display:grid}.utm-form-row{display:contents}.utm-form-row.utm-preview-row{flex-direction:column;grid-column:1/-1;gap:16px;display:flex}@media (min-width:600px){.utm-form-row.utm-preview-row{flex-direction:row}}.utm-field{flex-direction:column;gap:6px;height:100%;display:flex}.utm-field>label{color:var(--text-secondary);letter-spacing:.02em;flex-grow:1;align-items:flex-end;padding-bottom:2px;font-size:13px;font-weight:500;display:flex}.utm-field label .utm-required{color:var(--danger);margin-left:2px}.utm-input{background:var(--bg-body);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);transition:var(--transition-spring);outline:none;padding:10px 12px;font-family:inherit;font-size:14px}.utm-input::placeholder,.utm-preview-area::placeholder{color:var(--text-muted);opacity:.5}.utm-input:focus{border-color:var(--accent)}.utm-input::placeholder{color:var(--text-dim)}.utm-input.has-error{border-color:var(--danger)}.utm-error-text{color:var(--danger);margin-top:2px;font-size:12px}.utm-combobox,.utm-combobox-input-wrap{position:relative}.utm-combobox-input-wrap .utm-input{padding-right:32px}.utm-combobox-chevron{color:var(--text-dim);pointer-events:none;transition:var(--transition-spring);position:absolute;top:50%;right:10px;transform:translateY(-50%)}.utm-combobox.is-open .utm-combobox-chevron{transform:translateY(-50%)rotate(180deg)}.utm-combobox-dropdown{z-index:50;background:var(--bg-dropdown);border:1px solid var(--border);border-radius:var(--radius-sm);max-height:200px;box-shadow:var(--shadow-dropdown);animation:.15s utm-dropdown-in;position:absolute;top:calc(100% + 4px);left:0;right:0;overflow-y:auto}@keyframes utm-dropdown-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.utm-combobox-option{cursor:pointer;color:var(--text-primary);transition:var(--transition-spring);justify-content:space-between;align-items:center;padding:8px 12px;font-size:14px;display:flex}.utm-combobox-option:hover,.utm-combobox-option.is-focused{background:var(--bg-hover)}.utm-combobox-option-text{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.utm-combobox-delete{width:20px;height:20px;color:var(--text-dim);cursor:pointer;transition:var(--transition-spring);background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.utm-combobox-delete:hover{color:var(--danger);background:#ef44441a}.utm-combobox-empty{color:var(--text-dim);text-align:center;padding:12px;font-size:13px}.utm-preview{flex-direction:column;flex:3;gap:6px;display:flex}.utm-preview>label{color:var(--text-secondary);flex-grow:1;align-items:flex-end;padding-bottom:2px;font-size:13px;font-weight:500;display:flex}.utm-button-wrapper{flex-direction:column;flex:1;gap:6px;min-width:200px;display:flex}.utm-hidden-label{visibility:hidden;flex-grow:1;align-items:flex-end;padding-bottom:2px;font-size:13px;display:flex}.utm-preview-area{background:var(--bg-body);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;min-height:72px;color:var(--accent);word-break:break-all;resize:none;cursor:default;outline:none;padding:10px 12px;font-family:SF Mono,Fira Code,Consolas,monospace;font-size:13px;line-height:1.5}.utm-generate-btn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;height:100%;min-height:72px;transition:var(--transition-spring);border:none;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-family:inherit;font-size:14px;font-weight:600;display:flex}.utm-generate-btn:hover{filter:brightness(1.1)}.utm-generate-btn:active{transform:scale(.98)}.utm-generate-btn:disabled{opacity:.5;cursor:not-allowed}.utm-generate-btn.is-copied{background:var(--success)}.utm-history{flex-direction:column;gap:16px;display:flex}.utm-history-header{justify-content:space-between;align-items:center;display:flex}.utm-history-header h2{color:var(--text-primary);margin:0;font-size:16px;font-weight:600}.utm-history-count{color:var(--text-dim);font-size:13px}.utm-history-list{flex-direction:column;gap:10px;display:flex}.utm-history-empty{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:48px 24px;display:flex}.utm-history-empty-icon{color:var(--text-dim);opacity:.5;margin-bottom:12px}.utm-history-empty p{color:var(--text-dim);margin:0;font-size:14px}.utm-history-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);transition:var(--transition-spring);flex-direction:column;gap:10px;padding:16px;display:flex}.utm-history-card:hover{border-color:var(--accent)}.utm-card-url{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.utm-card-params{flex-wrap:wrap;gap:6px;display:flex}.utm-param-badge{border-radius:var(--radius-sm);color:var(--accent);background:#3b82f61a;align-items:center;gap:4px;padding:3px 8px;font-size:12px;font-weight:500;display:inline-flex}.utm-param-badge.badge-source{color:var(--accent);background:#3b82f61a}.utm-param-badge.badge-medium{color:var(--success);background:#10b9811a}.utm-param-badge.badge-campaign{color:#a855f7;background:#a855f71a}.utm-param-badge.badge-term{color:#f59e0b;background:#f59e0b1a}.utm-param-badge.badge-content{color:#ec4899;background:#ec48991a}.utm-param-badge-key{opacity:.7}.utm-card-footer{justify-content:space-between;align-items:center;margin-top:2px;display:flex}.utm-card-time{color:var(--text-dim);font-size:12px}.utm-card-actions{gap:4px;display:flex}.utm-card-action{color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-spring);background:0 0;border:none;justify-content:center;align-items:center;gap:4px;padding:5px 10px;font-family:inherit;font-size:12px;display:flex}.utm-card-action:hover{background:var(--bg-hover);color:var(--text-primary)}.utm-card-action.is-danger:hover{color:var(--danger);background:#ef44441a}.utm-card-action.is-copied{color:var(--success)}@media (max-width:768px){.utm-generate-btn{min-height:48px}.utm-input,.utm-preview-area,.utm-combobox-option{font-size:16px}}.utm-combobox-dropdown::-webkit-scrollbar{width:6px}.utm-combobox-dropdown::-webkit-scrollbar-track{background:0 0}.utm-combobox-dropdown::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}