.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, .tool-select {
        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, .tool-select:focus {
        outline: none;
        border-color: var(--primary-light);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    .tool-textarea {
        width: 100%;
        height: 200px;
        padding: 16px;
        border: 1px solid var(--border-light);
        border-radius: 8px;
        font-family: inherit;
        font-size: 14px;
        line-height: 1.6;
        resize: vertical;
        background: var(--bg-light);
        color: var(--text-dark);
        transition: border-color 0.2s;
    }
    .tool-textarea:focus {
        outline: none;
        border-color: var(--primary-light);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    .btn-tool {
        padding: 12px 20px;
        border: none;
        background: #3b82f6;
        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;
    }
    .btn-tool:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3); }
    .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; }
    .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; }

    .form-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .form-group {
        display: flex;
        flex-direction: column;
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }
    .stat-card {
        background: var(--bg-white);
        border: 1px solid var(--border-light);
        border-radius: 12px;
        padding: 20px 16px;
        text-align: center;
        transition: border-color 0.2s, box-shadow 0.2s;
    }
    .stat-card:hover {
        border-color: var(--primary-light);
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.08);
    }
    .stat-number {
        font-size: 32px;
        font-weight: 700;
        color: var(--text-dark);
        line-height: 1;
        margin-bottom: 6px;
    }
    .stat-label {
        font-size: 12px;
        font-weight: 600;
        color: var(--text-light);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    .keyword-table {
        display: table;
        width: 100%;
        border-collapse: collapse;
    }
    .keyword-row {
        display: table-row;
        border-bottom: 1px solid var(--border-light);
    }
    .keyword-row:last-child {
        border-bottom: none;
    }
    .keyword-cell {
        display: table-cell;
        padding: 12px 8px;
        font-size: 14px;
        vertical-align: middle;
    }
    .keyword-cell.keyword {
        font-weight: 600;
        color: var(--text-dark);
        width: 40%;
    }
    .keyword-cell.count {
        color: var(--text-light);
        text-align: center;
        width: 20%;
    }
    .keyword-cell.density {
        text-align: right;
        width: 20%;
    }
    .keyword-cell.bar {
        width: 20%;
    }
    .density-bar-bg {
        height: 8px;
        background: var(--bg-light);
        border-radius: 4px;
        overflow: hidden;
    }
    .density-bar {
        height: 100%;
        background: #3b82f6;
        border-radius: 4px;
        transition: width 0.3s ease;
    }
    .recommendation-item {
        padding: 12px;
        background: var(--bg-light);
        border-left: 3px solid #3b82f6;
        border-radius: 4px;
        margin-bottom: 8px;
        font-size: 14px;
        line-height: 1.6;
        color: var(--text-dark);
    }
    .recommendation-item.warning {
        border-left-color: #f59e0b;
        background: #fffbeb;
    }
    .recommendation-item.success {
        border-left-color: #10b981;
        background: #ecfdf5;
    }

    @media (max-width: 768px) {
        .form-grid { grid-template-columns: 1fr; }
        .form-group[style*="grid-column"] { grid-column: auto !important; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
        .tool-textarea { height: 150px; }
    }