.tool-label {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        font-weight: 600;
        color: var(--text-light);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 6px;
    }
    .tool-input {
        width: 100%;
        padding: 12px 16px;
        border: 1px solid var(--border-light);
        border-radius: 8px;
        font-size: 14px;
        background: var(--bg-light);
        color: var(--text-dark);
        transition: border-color 0.2s;
    }
    .tool-input:focus {
        outline: none;
        border-color: var(--primary-light);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    .tool-select {
        width: 100%;
        padding: 12px 16px;
        border: 1px solid var(--border-light);
        border-radius: 8px;
        font-size: 14px;
        background: var(--bg-white);
        color: var(--text-dark);
        cursor: pointer;
    }
    .tool-select:focus { outline: none; border-color: var(--primary-light); }
    .btn-tool {
        padding: 12px 20px;
        border: none;
        background: linear-gradient(135deg, #3b82f6, #8b5cf6);
        color: white;
        border-radius: 8px;
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        white-space: nowrap;
    }
    .btn-tool:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3); }
    .btn-tool:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
    .btn-tool-outline {
        background: transparent;
        color: var(--primary);
        border: 1px solid var(--border-light);
    }
    .btn-tool-outline:hover { background: var(--bg-light); border-color: var(--primary-light); box-shadow: none; transform: none; }
    .btn-tool-outline:disabled { opacity: 0.5; cursor: not-allowed; }
    .btn-copy-icon {
        background: white;
        border: none;
        width: 40px;
        height: 40px;
        border-radius: 8px;
        cursor: pointer;
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s;
        flex-shrink: 0;
        font-size: 16px;
    }
    .btn-copy-icon:hover { background: var(--primary); color: white; }
    .btn-copy-icon:disabled { opacity: 0.4; cursor: not-allowed; }
    .tool-status {
        padding: 12px 16px;
        border-radius: 8px;
        font-size: 14px;
        margin-bottom: 16px;
        font-weight: 500;
    }
    .tool-status.success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
    .tool-status.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
    .tool-status.info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

    .utm-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .form-group {
        display: flex;
        flex-direction: column;
    }
    .field-badge {
        font-size: 10px;
        padding: 2px 8px;
        border-radius: 10px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.3px;
    }
    .field-badge.required {
        background: #fef2f2;
        color: #dc2626;
    }
    .field-badge.optional {
        background: #f0fdf4;
        color: #16a34a;
    }
    .field-hint {
        font-size: 12px;
        color: var(--text-light);
        margin-top: 4px;
        font-style: italic;
    }

    .generated-url-box {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 16px;
        background: linear-gradient(135deg, #dbeafe, #ede9fe);
        border-radius: 10px;
    }
    .generated-url-text {
        flex: 1;
        font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
        font-size: 13px;
        color: var(--text-dark);
        word-break: break-all;
        line-height: 1.5;
    }
    .generated-url-text .url-base {
        color: var(--text-dark);
        font-weight: 600;
    }
    .generated-url-text .url-param-key {
        color: #7c3aed;
        font-weight: 600;
    }
    .generated-url-text .url-param-value {
        color: #059669;
    }
    .generated-url-text .url-separator {
        color: var(--text-light);
    }
    .url-placeholder {
        color: var(--text-light);
        font-style: italic;
        font-family: inherit;
    }

    .breakdown-list {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .breakdown-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 10px 14px;
        background: var(--bg-light);
        border-radius: 8px;
        font-size: 13px;
    }
    .breakdown-key {
        font-weight: 600;
        color: #7c3aed;
        min-width: 120px;
        font-family: monospace;
    }
    .breakdown-value {
        color: #059669;
        font-family: monospace;
    }
    .breakdown-arrow {
        color: var(--text-light);
    }

    @media (max-width: 768px) {
        .utm-grid { grid-template-columns: 1fr; }
        .breakdown-item { flex-direction: column; align-items: flex-start; gap: 4px; }
        .breakdown-key { min-width: auto; }
    }