#rng-widget-container {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        color: #111827;
        line-height: 1.6;
        max-width: 900px;
        margin: 2rem auto;
    }

    #rng-widget-container * {
        box-sizing: border-box;
    }

    #rng-widget-container .rng-header {
        text-align: center;
        margin-bottom: 2rem;
        padding: 2rem 0;
    }

    #rng-widget-container .rng-title {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
        color: #111827;
        margin-bottom: 0.5rem;
        font-weight: 700;
    }

    #rng-widget-container .rng-subtitle {
        color: #4b5563;
        font-size: clamp(0.875rem, 2vw, 1rem);
    }

    #rng-widget-container .results-section {
        background: #f9fafb;
        border: 2px solid #e5e7eb;
        border-radius: 12px;
        padding: 1.5rem;
        margin-bottom: 2rem;
        min-height: 200px;
    }

    #rng-widget-container .results-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 1rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    #rng-widget-container .results-title {
        font-size: 1.125rem;
        font-weight: 600;
        color: #1f2937;
    }

    #rng-widget-container .results-count {
        color: #4b5563;
        font-size: 0.875rem;
    }

    #rng-widget-container .results-output {
        background: white;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        padding: 1.25rem;
        min-height: 120px;
        font-size: 1.125rem;
        line-height: 1.8;
        color: #111827;
        word-break: break-all;
        white-space: pre-wrap;
        font-family: 'Courier New', monospace;
    }

    #rng-widget-container .results-output.empty {
        display: flex;
        align-items: center;
        justify-content: center;
        color: #9ca3af;
        font-style: italic;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }

    #rng-widget-container .results-output.demo {
        color: #6b7280;
        font-style: italic;
    }

    #rng-widget-container .number-item {
        display: inline-block;
        opacity: 0;
        transform: translateY(-10px);
        animation: rngFadeInUp 0.4s ease forwards;
    }

    @keyframes rngFadeInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    #rng-widget-container .action-buttons {
        display: flex;
        gap: 0.75rem;
        flex-wrap: wrap;
        margin-top: 1rem;
    }

    #rng-widget-container .rng-btn {
        padding: 0.75rem 1.5rem;
        border: none;
        border-radius: 8px;
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        flex: 1;
        min-width: 140px;
        justify-content: center;
        text-decoration: none;
    }

    #rng-widget-container .rng-btn:focus {
        outline: 3px solid #818cf8;
        outline-offset: 2px;
    }

    #rng-widget-container .rng-btn-primary {
        background: #4f46e5;
        color: white;
        box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    }

    #rng-widget-container .rng-btn-primary:hover:not(:disabled) {
        background: #4338ca;
        transform: translateY(-2px);
        box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    }

    #rng-widget-container .rng-btn-primary:disabled {
        background: #d1d5db;
        cursor: not-allowed;
        opacity: 0.6;
    }

    #rng-widget-container .rng-btn-secondary {
        background: white;
        color: #374151;
        border: 2px solid #d1d5db;
    }

    #rng-widget-container .rng-btn-secondary:hover:not(:disabled) {
        background: #f9fafb;
        border-color: #9ca3af;
    }

    #rng-widget-container .rng-btn-icon {
        padding: 0.75rem 1rem;
        min-width: auto;
        flex: 0;
    }

    #rng-widget-container .rng-tabs {
        display: flex;
        gap: 0.5rem;
        margin-bottom: 1.5rem;
        border-bottom: 2px solid #e5e7eb;
        overflow-x: auto;
    }

    #rng-widget-container .rng-tab {
        padding: 0.75rem 1.5rem;
        background: none;
        border: none;
        border-bottom: 3px solid transparent;
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        color: #4b5563;
        transition: all 0.3s ease;
        white-space: nowrap;
    }

    #rng-widget-container .rng-tab:hover {
        color: #111827;
        background: #f9fafb;
    }

    #rng-widget-container .rng-tab.active {
        color: #4f46e5;
        border-bottom-color: #4f46e5;
    }

    #rng-widget-container .tab-content {
        display: none;
    }

    #rng-widget-container .tab-content.active {
        display: block;
    }

    #rng-widget-container .control-section {
        background: #f9fafb;
        border: 1px solid #e5e7eb;
        border-radius: 12px;
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }

    #rng-widget-container .section-title {
        font-size: 1.125rem;
        font-weight: 600;
        color: #1f2937;
        margin-bottom: 1rem;
    }

    #rng-widget-container .form-group {
        margin-bottom: 1.25rem;
    }

    #rng-widget-container .form-group:last-child {
        margin-bottom: 0;
    }

    #rng-widget-container .form-group label {
        display: block;
        font-weight: 600;
        color: #374151;
        margin-bottom: 0.5rem;
        font-size: 0.9375rem;
    }

    #rng-widget-container input[type="number"],
    #rng-widget-container input[type="text"],
    #rng-widget-container textarea,
    #rng-widget-container select {
        width: 100%;
        padding: 0.75rem;
        border: 2px solid #d1d5db;
        border-radius: 8px;
        font-size: 1rem;
        transition: all 0.3s ease;
        background: white;
        color: #111827;
    }

    #rng-widget-container input:focus,
    #rng-widget-container textarea:focus,
    #rng-widget-container select:focus {
        outline: none;
        border-color: #4f46e5;
        box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

    #rng-widget-container textarea {
        resize: vertical;
        min-height: 120px;
        font-family: 'Courier New', monospace;
    }

    #rng-widget-container .input-group {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    #rng-widget-container .presets {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.75rem;
        margin-top: 0.75rem;
    }

    #rng-widget-container .preset-btn {
        padding: 0.75rem;
        background: white;
        border: 2px solid #d1d5db;
        border-radius: 8px;
        font-size: 0.9375rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        color: #374151;
    }

    #rng-widget-container .preset-btn:hover {
        border-color: #4f46e5;
        background: #818cf8;
        color: white;
        transform: translateY(-2px);
    }

    #rng-widget-container .preset-btn.active {
        background: #4f46e5;
        border-color: #4f46e5;
        color: white;
    }

    #rng-widget-container .toggle-group {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }

    #rng-widget-container .toggle {
        position: relative;
        width: 52px;
        height: 28px;
        flex-shrink: 0;
    }

    #rng-widget-container .toggle input {
        opacity: 0;
        width: 0;
        height: 0;
    }

    #rng-widget-container .toggle-slider {
        position: absolute;
        cursor: pointer;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #d1d5db;
        transition: 0.3s;
        border-radius: 34px;
    }

    #rng-widget-container .toggle-slider:before {
        position: absolute;
        content: "";
        height: 20px;
        width: 20px;
        left: 4px;
        bottom: 4px;
        background-color: white;
        transition: 0.3s;
        border-radius: 50%;
    }

    #rng-widget-container .toggle input:checked + .toggle-slider {
        background-color: #4f46e5;
    }

    #rng-widget-container .toggle input:checked + .toggle-slider:before {
        transform: translateX(24px);
    }

    #rng-widget-container .radio-group {
        display: flex;
        gap: 1rem;
        flex-wrap: wrap;
    }

    #rng-widget-container .radio-option {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
        padding: 0.5rem;
        border-radius: 6px;
        transition: all 0.3s ease;
    }

    #rng-widget-container .radio-option:hover {
        background: #f3f4f6;
    }

    #rng-widget-container .radio-option input[type="radio"] {
        width: 20px;
        height: 20px;
        cursor: pointer;
    }

    #rng-widget-container .alert {
        padding: 1rem;
        border-radius: 8px;
        margin-bottom: 1rem;
        display: flex;
        align-items: start;
        gap: 0.75rem;
        animation: rngSlideDown 0.3s ease;
    }

    @keyframes rngSlideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    #rng-widget-container .alert-error {
        background: #fef2f2;
        border: 1px solid #fecaca;
        color: #991b1b;
    }

    #rng-widget-container .alert-success {
        background: #f0fdf4;
        border: 1px solid #bbf7d0;
        color: #166534;
    }

    @media (max-width: 640px) {
        #rng-widget-container .input-group {
            grid-template-columns: 1fr;
        }

        #rng-widget-container .presets {
            grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        }

        #rng-widget-container .action-buttons {
            flex-direction: column;
        }

        #rng-widget-container .rng-btn {
            width: 100%;
        }
    }