.tool-container {
        max-width: 1200px;
        margin: 0 auto;
        background: var(--color-card-bg);
        border: 1px solid var(--color-card-border);
        border-radius: 12px;
        box-shadow: var(--color-card-shadow);
        overflow: hidden;
        transition: all 0.3s ease;
        margin-top: 15px;
        margin-bottom: 15px;
    }

    .header {
        background: var(--color-hero-bg);
        padding: 40px 30px;
        text-align: center;
        color: var(--color-hero-text);
        border-bottom: 1px solid var(--color-card-border);
        padding-top: 20px;
        padding-bottom: 15px;
    }

    .header h1 {
        font-family: var(--font-heading);
        font-size: 2.5rem;
        margin-bottom: 10px;
        font-weight: 600;
    }

    .header p {
        font-size: 1.1rem;
        color: var(--color-hero-text);
        opacity: 0.9;
    }

    .content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
        min-height: 600px;
    }

    .form-section {
        padding: 30px;
        background: var(--color-background);
        border-right: 1px solid var(--color-card-border);
    }

    .preview-section {
        padding: 30px;
        background: var(--color-sidebar-bg);
        color: var(--color-text-primary);
    }

    .tool-section-title {
        font-family: var(--font-heading);
        font-size: 1.5rem;
        margin-bottom: 25px;
        color: var(--color-text-primary);
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 600;
    }

    .form-group {
        margin-bottom: 25px;
    }

    .form-group label {
        display: block;
        margin-bottom: 8px;
        font-weight: 500;
        color: var(--color-text-primary);
        font-family: var(--font-primary);
    }

    .form-group input,
    .form-group textarea,
    .form-group select {
        width: 100%;
        padding: 12px 16px;
        border: 1px solid var(--color-card-border);
        border-radius: 8px;
        font-size: 14px;
        font-family: var(--font-primary);
        background: var(--color-card-bg);
        color: var(--color-text-primary);
        transition: all 0.3s ease;
    }

    .form-group input:focus,
    .form-group textarea:focus,
    .form-group select:focus {
        outline: none;
        border-color: var(--color-button-bg);
        box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
    }

    .checkbox-group {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 15px;
        color: var(--color-text-primary);
    }

    .checkbox-group input[type="checkbox"] {
        width: auto;
        transform: scale(1.2);
        accent-color: var(--color-button-bg);
    }

    .checkbox-group label {
        margin-bottom: 0;
        cursor: pointer;
    }

    .btn-group {
        display: flex;
        gap: 15px;
        margin-top: 30px;
    }

    .btn-primary {
        background: var(--color-button-bg);
        color: var(--color-button-text);
    }

    .btn-primary:hover {
        background: var(--color-button-hover-bg);
        color: var(--color-button-hover-text);
        transform: translateY(-1px);
    }

    .btn-secondary {
        background: transparent;
        color: var(--color-text-primary);
        border-color: var(--color-card-border);
    }

    .btn-secondary:hover {
        background: var(--color-card-bg);
        transform: translateY(-1px);
    }

    .preview-box {
        background: var(--color-code-bg);
        color: var(--color-code-text);
        border: 1px solid var(--color-card-border);
        border-radius: 8px;
        padding: 20px;
        font-family: var(--font-code);
        font-size: 13px;
        line-height: 1.6;
        white-space: pre-wrap;
        min-height: 400px;
        overflow-y: auto;
        margin-top: 20px;
    }

    .rules-container {
        border: 1px solid var(--color-card-border);
        border-radius: 8px;
        padding: 20px;
        margin-top: 15px;
        background: var(--color-card-bg);
    }

    .rule-item {
        display: flex;
        gap: 10px;
        margin-bottom: 15px;
        align-items: center;
    }

    .rule-item select,
    .rule-item input {
        margin-bottom: 0;
    }

    .rule-item select {
        flex: 0 0 120px;
    }

    .rule-item input {
        flex: 1;
    }

    .btn-small {
        padding: 8px 12px;
        font-size: 12px;
        border-radius: 6px;
        border: none;
        cursor: pointer;
        transition: all 0.2s ease;
        font-family: var(--font-primary);
        font-weight: 500;
    }

    .btn-add {
        background: var(--color-button-bg);
        color: var(--color-button-text);
    }

    .btn-remove {
        background: #dc3545;
        color: white;
    }

    .btn-small:hover {
        transform: translateY(-1px);
        opacity: 0.9;
    }

    .info-box {
        background: var(--color-card-bg);
        border: 1px solid var(--color-card-border);
        border-radius: 8px;
        padding: 15px;
        margin-bottom: 20px;
        font-size: 14px;
        color: var(--color-text-secondary);
        font-family: var(--font-primary);
    }

    .feature-section {
        background: var(--color-card-bg);
        border: 1px solid var(--color-card-border);
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 20px;
    }

    .feature-section h3 {
        margin-bottom: 15px;
        color: var(--color-text-primary);
        font-size: 1.2rem;
        font-weight: 600;
    }

    .feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 15px;
        margin-top: 15px;
    }

    .icon {
        width: 20px;
        height: 20px;
    }

    h1 {
        font-family: var(--font-heading);
        color: var(--color-text-primary);
        font-size: 2.5rem;
        margin-bottom: 10px;
        font-weight: 600;
    }

    .main-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 30px;
        margin-bottom: 30px;
    }

    @media (max-width: 768px) {
        .main-grid {
            grid-template-columns: 1fr;
        }
    }

    .card {
        background: var(--color-card-bg) !important;
        border: 1px solid var(--color-card-border);
        border-radius: 8px;
        padding: 25px;
    }

    .card h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
        font-weight: 600;
        color: var(--color-text-primary);
    }

    .form-group {
        margin-bottom: 20px;
    }

    label {
        display: block;
        margin-bottom: 8px;
        font-weight: 500;
        color: var(--color-text-secondary);
    }

    input,
    textarea,
    select {
        width: 100%;
        padding: 12px;
        border: 1px solid var(--color-card-border);
        border-radius: 5px;
        font-family: var(--font-primary);
        font-size: 0.95rem;
        background: var(--color-background);
        color: var(--color-text-primary);
        transition: border-color 0.3s;
    }

    input:focus,
    textarea:focus,
    select:focus {
        outline: none;
        border-color: var(--color-text-primary);
    }

    select {
        cursor: pointer;
    }

    textarea {
        resize: vertical;
        min-height: 100px;
    }

    .btn-secondary {
        background: var(--color-card-bg);
        color: var(--color-text-primary);
        border: 2px solid var(--color-card-border);
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .btn-secondary:hover {
        border-color: var(--color-text-primary);
    }

    .btn-remove {
        background: #dc3545;
        color: white;
        padding: 8px 16px;
        font-size: 0.85rem;
        width: auto;
        margin-top: 5px;
    }

    .btn-remove:hover {
        background: #c82333;
    }

    .code-output {
        background: var(--color-code-bg);
        color: var(--color-code-text);
        padding: 20px;
        border-radius: 8px;
        font-family: var(--font-code);
        font-size: 0.9rem;
        overflow-x: auto;
        white-space: pre-wrap;
        word-wrap: break-word;
        position: relative;
        min-height: 200px;
    }

    .copy-btn {
        position: absolute;
        top: 10px;
        right: 10px;
        background: var(--color-button-bg);
        color: var(--color-button-text);
        border: none;
        padding: 8px 16px;
        border-radius: 4px;
        cursor: pointer;
        font-family: var(--font-primary);
        font-size: 0.85rem;
        transition: background-color 0.3s;
    }

    .copy-btn:hover {
        background: var(--color-button-hover-bg);
    }

    .success-message {
        color: #4caf50;
        font-size: 0.9rem;
        margin-top: 10px;
        text-align: center;
    }

    .hidden {
        display: none;
    }

    .info-box {
        background: var(--color-card-bg);
        border-left: 4px solid var(--color-text-primary);
        padding: 15px;
        margin-bottom: 20px;
        border-radius: 4px;
    }

    .info-box p {
        color: var(--color-text-secondary);
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .dynamic-item {
        background: var(--color-background);
        border: 1px solid var(--color-card-border);
        padding: 15px;
        border-radius: 5px;
        margin-bottom: 15px;
    }

    .dynamic-item h4 {
        margin-bottom: 15px;
        color: var(--color-text-primary);
        font-size: 1rem;
    }

    .button-group {
        display: flex;
        gap: 10px;
        margin-top: 15px;
    }

    /* Mobile Friendly Styles */
    @media (max-width: 1024px) {
        .tool-container {
            max-width: 98vw;
        }

        .content {
            min-height: 0;
        }
    }

    @media (max-width: 900px) {
        .content {
            grid-template-columns: 1fr;
        }

        .form-section,
        .preview-section {
            padding: 20px;
            border-right: none;
            border-bottom: 1px solid var(--color-card-border);
        }

        .preview-section {
            border-bottom: none;
        }

        .preview-box {
            min-height: 250px;
        }
    }

    @media (max-width: 600px) {

        .tool-container {
            border-radius: 0;
            box-shadow: none;
            border: none;
            max-width: 100vw;
        }

        .header {
            padding: 25px 15px;
        }

        .header h1 {
            font-size: 2rem;
        }

        .header p {
            font-size: 1rem;
        }

        .form-section,
        .preview-section {
            padding: 15px;
        }

        .tool-section-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 10px 12px;
            font-size: 14px;
        }

        .btn-group {
            flex-direction: column;
            gap: 10px;
            margin-top: 20px;
        }

        .btn {
            padding: 12px 20px;
            font-size: 14px;
        }

        .preview-box {
            padding: 15px;
            font-size: 12px;
            min-height: 200px;
            margin-top: 15px;
        }

        .rules-container {
            padding: 15px;
            margin-top: 10px;
        }

        .rule-item {
            flex-direction: column;
            align-items: stretch;
            gap: 8px;
            margin-bottom: 15px;
        }

        .rule-item select,
        .rule-item input {
            width: 100%;
            flex: unset;
        }

        .btn-small {
            width: 100%;
            margin-top: 5px;
        }

        .info-box {
            padding: 12px;
            font-size: 13px;
        }

        .feature-grid {
            grid-template-columns: 1fr;
            gap: 10px;
        }
    }