/* Compact header aligned with form */
        .tool-header {
            padding: 2rem 1.5rem !important;
            background: transparent !important;
            border-bottom: none !important;
        }
        
        .tool-header-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .tool-header-content {
            text-align: left !important;
            padding: 0;
        }
        
        .tool-page-title {
            margin-bottom: 0.5rem !important;
            text-align: left !important;
            font-size: 2rem !important;
        }
        
        .tool-page-description {
            font-size: 1rem !important;
            margin-bottom: 1rem !important;
            text-align: left !important;
            max-width: 100% !important;
        }
        
        .tool-meta {
            justify-content: flex-start !important;
            margin-top: 1rem;
        }
        
        /* Ensure main content aligns with header */
        .tool-main {
            padding-top: 1rem !important;
            padding-bottom: 3rem !important;
        }
        
        .tool-container {
            max-width: 1200px;
            margin-left: 1.5rem; /* Left-aligned with small left margin */
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        
        /* Optimize for larger screens */
        @media (min-width: 1300px) {
            .tool-container {
                max-width: min(1200px, calc(100vw - 380px - 3rem)); /* Reserve space for right ads */
                margin-left: 1.5rem;
            }
        }
        
        @media (min-width: 1440px) {
            .tool-container {
                max-width: min(1200px, calc(100vw - 420px - 3rem)); /* Reserve space for larger right ads */
                margin-left: 1.5rem;
            }
        }
        
        @media (min-width: 1600px) {
            .tool-container {
                max-width: 1400px; /* Use more space on very large screens */
                margin-left: 1.5rem;
            }
        }
        
        .cipher-form-card {
            background: var(--bg-primary, #ffffff);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 1rem;
            padding: 2.5rem; /* Increased padding for breathing room */
            margin-bottom: 3rem; /* Increased margin */
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }

        /* Single Column Form Layout */
        .form-single-column {
            display: flex;
            flex-direction: column;
            gap: 2.5rem; /* Increased gap for better breathing room */
            max-width: 700px;
            margin: 0 auto;
        }

        @media (min-width: 768px) {
            .form-single-column {
                max-width: 800px;
            }
        }

        /* Container for form with side-by-side output on desktop */
        .form-with-output {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        @media (min-width: 992px) {
            .form-with-output {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
                align-items: start;
            }
            
            .form-single-column {
                max-width: 100%;
            }
        }

        .form-group {
            margin-bottom: 2.5rem; /* Increased whitespace for breathing room */
        }

        /* Step Indicators - Visual Hierarchy */
        .step-indicator {
            position: relative;
            padding-top: 0.5rem;
        }

        .step-header {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
        }

        .step-number {
            font-size: 1.5rem;
            line-height: 1;
            flex-shrink: 0;
            width: 2.5rem;
            height: 2.5rem;
            background: var(--bg-secondary, #f8fafc);
            border: 2px solid var(--border, #e2e8f0);
            border-radius: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .step-indicator.step-1 .step-number {
            border-color: #3b82f6; /* Blue */
            background: rgba(59, 130, 246, 0.05);
        }

        .step-indicator.step-2 .step-number {
            border-color: #3b82f6; /* Blue */
            background: rgba(59, 130, 246, 0.05);
        }

        .step-indicator.step-3 .step-number {
            border-color: #3b82f6; /* Blue */
            background: rgba(59, 130, 246, 0.05);
        }

        .step-indicator.step-4 .step-number {
            border-color: #8b5cf6; /* Purple - for operation */
            background: rgba(139, 92, 246, 0.05);
        }

        .form-label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-primary, #0f172a);
            font-size: 0.9375rem;
        }

        .form-label i {
            margin-right: 0.5rem;
            color: var(--primary, #6366f1);
        }

        .form-label .required {
            color: var(--error, #ef4444);
            margin-left: 0.25rem;
        }

        .form-text {
            font-size: 0.875rem;
            color: var(--text-muted, #94a3b8);
            margin-top: 0.5rem;
        }

        /* Blue Color Coding for Input Fields */
        .select-field {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 2px solid #3b82f6; /* Blue border */
            border-radius: 0.5rem;
            font-size: 0.9375rem;
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
            background: rgba(59, 130, 246, 0.02); /* Light blue background */
            color: var(--text-primary, #0f172a);
            transition: all 0.2s;
        }

        .select-field:focus {
            outline: none;
            border-color: #2563eb; /* Darker blue on focus */
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            background: rgba(59, 130, 246, 0.04);
        }

        /* Blue Color Coding for Input Fields */
        .input-field,
        .textarea-field {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 2px solid #3b82f6; /* Blue border */
            border-radius: 0.5rem;
            font-size: 0.9375rem;
            background: rgba(59, 130, 246, 0.02); /* Light blue background */
            color: var(--text-primary, #0f172a);
            transition: all 0.2s;
            font-family: var(--font-sans, 'Inter', sans-serif);
        }

        .textarea-field {
            resize: vertical;
            min-height: 120px;
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
        }

        .input-field:focus,
        .textarea-field:focus {
            outline: none;
            border-color: #2563eb; /* Darker blue on focus */
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
            background: rgba(59, 130, 246, 0.04);
        }

        .input-group-modern {
            display: flex;
            gap: 0.5rem;
            align-items: stretch;
        }

        .input-group-modern .input-field {
            flex: 1;
        }

        .dropdown-button {
            padding: 0.75rem 1rem;
            background: var(--bg-secondary, #f8fafc);
            border: 2px solid var(--border, #e2e8f0);
            border-radius: 0.5rem;
            color: var(--text-primary, #0f172a);
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.2s;
        }

        .dropdown-button:hover {
            background: var(--bg-tertiary, #f1f5f9);
            border-color: var(--primary, #6366f1);
        }

        /* Green Color Coding for Generate/Success Actions */
        .btn-generate {
            background: rgba(34, 197, 94, 0.1) !important;
            border-color: #22c55e !important; /* Green */
            color: #15803d !important;
        }

        .btn-generate:hover {
            background: rgba(34, 197, 94, 0.15) !important;
            border-color: #16a34a !important;
            color: #166534 !important;
        }

        .btn-generate i {
            color: #22c55e;
        }

        .dropdown-menu-modern {
            display: none;
            position: absolute;
            background: var(--bg-primary, #ffffff);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            z-index: 1000;
            min-width: 200px;
            margin-top: 0.5rem;
        }

        .dropdown-menu-modern.show {
            display: block;
        }

        .dropdown-item-modern {
            display: block;
            padding: 0.75rem 1rem;
            color: var(--text-primary, #0f172a);
            text-decoration: none;
            transition: background 0.2s;
            border-bottom: 1px solid var(--border, #e2e8f0);
        }

        .dropdown-item-modern:last-child {
            border-bottom: none;
        }

        .dropdown-item-modern:hover {
            background: var(--bg-secondary, #f8fafc);
        }

        .radio-group {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            margin-top: 0.75rem;
        }

        .radio-option {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.25rem;
            border: 2px solid var(--border, #e2e8f0);
            border-radius: 0.5rem;
            transition: all 0.2s;
            cursor: pointer;
            background: var(--bg-primary, #ffffff);
        }

        .radio-option:hover {
            background: var(--bg-secondary, #f8fafc);
        }

        /* Purple Color Coding for Encrypt */
        .radio-encrypt {
            border-color: #a855f7 !important; /* Purple */
            background: rgba(168, 85, 247, 0.05) !important;
        }

        .radio-encrypt:hover {
            background: rgba(168, 85, 247, 0.1) !important;
            border-color: #9333ea !important;
        }

        .radio-encrypt .radio-input:checked {
            accent-color: #9333ea;
        }

        .radio-encrypt .radio-input:checked + .radio-label {
            color: #7e22ce;
            font-weight: 600;
        }

        /* Orange Color Coding for Decrypt */
        .radio-decrypt {
            border-color: #f97316 !important; /* Orange */
            background: rgba(249, 115, 22, 0.05) !important;
        }

        .radio-decrypt:hover {
            background: rgba(249, 115, 22, 0.1) !important;
            border-color: #ea580c !important;
        }

        .radio-decrypt .radio-input:checked {
            accent-color: #ea580c;
        }

        .radio-decrypt .radio-input:checked + .radio-label {
            color: #c2410c;
            font-weight: 600;
        }

        .radio-input {
            width: 1.25rem;
            height: 1.25rem;
            accent-color: var(--primary, #6366f1);
            cursor: pointer;
        }

        .radio-label {
            font-weight: 500;
            color: var(--text-primary, #0f172a);
            cursor: pointer;
        }

        .radio-label i {
            margin-right: 0.25rem;
        }

        .tips-box {
            background: var(--bg-secondary, #f8fafc);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 0.5rem;
            padding: 1rem;
            margin-top: 1rem;
            font-size: 0.875rem;
        }

        .tips-box strong {
            color: var(--text-primary, #0f172a);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
        }

        .tips-box ul {
            margin: 0;
            padding-left: 1.5rem;
            color: var(--text-secondary, #475569);
        }

        .tips-box li {
            margin-bottom: 0.25rem;
        }

        .btn-submit {
            width: 100%;
            padding: 1rem 2rem;
            background: var(--primary, #6366f1);
            color: white;
            border: none;
            border-radius: 0.75rem;
            font-weight: 600;
            font-size: 1.125rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            margin-top: 1.5rem;
        }

        .btn-submit:hover:not(:disabled) {
            background: var(--primary-dark, #4f46e5);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
        }

        .btn-submit:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .btn-secondary-modern {
            width: 100%;
            padding: 0.875rem 1.5rem;
            background: var(--bg-secondary, #f8fafc);
            color: var(--text-secondary, #475569);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 0.75rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            margin-top: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .btn-secondary-modern:hover {
            background: var(--bg-tertiary, #f1f5f9);
            border-color: var(--primary, #6366f1);
            color: var(--primary, #6366f1);
        }


        .badge-modern {
            display: inline-block;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            margin: 0.25rem;
        }

        .badge-success {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }

        .badge-primary {
            background: rgba(99, 102, 241, 0.1);
            color: #6366f1;
        }

        .badge-info {
            background: rgba(59, 130, 246, 0.1);
            color: #3b82f6;
        }

        .badge-warning {
            background: rgba(245, 158, 11, 0.1);
            color: #f59e0b;
        }

        .share-alert {
            display: none;
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid #10b981;
            border-radius: 0.75rem;
            padding: 1.5rem;
            margin-top: 1.5rem;
        }

        .share-alert.show {
            display: block;
        }

        .share-alert h6 {
            margin-bottom: 1rem;
            color: #10b981;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .input-group-share {
            display: flex;
            gap: 0.5rem;
        }

        .input-group-share input {
            flex: 1;
        }

        .btn-copy {
            padding: 0.75rem 1.5rem;
            background: #10b981;
            color: white;
            border: none;
            border-radius: 0.5rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-copy:hover {
            background: #059669;
        }

        /* Output Area Styles */
        #output,
        #outputDesktop {
            margin-top: 2rem;
        }

        /* Hide desktop output on mobile, hide mobile output on desktop */
        @media (max-width: 991px) {
            #outputDesktop {
                display: none !important;
            }
            .output-area-mobile {
                display: block;
            }
        }

        @media (min-width: 992px) {
            .output-area-mobile {
                display: none !important;
            }
            #outputDesktop {
                display: block;
            }
        }

        /* Side-by-side output container on desktop */
        .output-area-container {
            display: flex;
            flex-direction: column;
        }

        @media (min-width: 992px) {
            .output-area-container {
                position: sticky;
                top: 100px;
                min-height: 400px;
            }
            
            .output-area-container.has-result {
                animation: slideIn 0.3s ease;
            }
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateX(20px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        /* Input preview card (shown in output area) */
        .input-preview-card {
            background: var(--bg-secondary, #f8fafc);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 0.75rem;
            padding: 1.25rem;
            margin-bottom: 1rem;
        }

        .input-preview-card h4 {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-muted, #94a3b8);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .input-preview-item {
            margin-bottom: 0.75rem;
            font-size: 0.875rem;
        }

        .input-preview-item:last-child {
            margin-bottom: 0;
        }

        .input-preview-label {
            font-weight: 600;
            color: var(--text-secondary, #475569);
            margin-bottom: 0.25rem;
            display: block;
        }

        .input-preview-value {
            color: var(--text-primary, #0f172a);
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
            word-break: break-all;
            background: var(--bg-primary, #ffffff);
            padding: 0.5rem;
            border-radius: 0.375rem;
            border: 1px solid var(--border-light, #f1f5f9);
        }

        .input-preview-value.truncated {
            max-height: 3rem;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        /* Dark mode for input preview */
        [data-theme="dark"] .input-preview-card {
            background: var(--bg-tertiary, #334155);
            border-color: var(--border, #334155);
        }

        [data-theme="dark"] .input-preview-value {
            background: var(--bg-secondary, #1e293b);
            border-color: var(--border, #334155);
            color: var(--text-primary, #f1f5f9);
        }

        .result-card {
            background: var(--bg-primary, #ffffff);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 1rem;
            padding: 1.5rem;
            margin-bottom: 1rem;
        }
        
        /* Focus styles for accessibility */
        .result-card:focus {
            outline: 2px solid var(--primary, #6366f1);
            outline-offset: 2px;
        }
        
        .result-card:focus:not(:focus-visible) {
            outline: none;
        }

        .result-card.success {
            border-color: #10b981;
            border-left-width: 4px;
        }

        .result-card.error {
            border-color: #ef4444;
            border-left-width: 4px;
        }

        .result-header {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .result-output {
            background: var(--bg-secondary, #f8fafc);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 0.5rem;
            padding: 1rem;
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
            font-size: 0.875rem;
            white-space: pre-wrap;
            word-wrap: break-word;
            margin-top: 0.75rem;
        }

        .info-box {
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid #3b82f6;
            border-radius: 0.5rem;
            padding: 1rem;
            margin-top: 0.75rem;
        }

        .info-box code {
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
            font-size: 0.8125rem;
            background: rgba(0,0,0,0.05);
            padding: 0.25rem 0.5rem;
            border-radius: 0.25rem;
        }

        /* Dark Mode */
        [data-theme="dark"] .cipher-form-card,
        [data-theme="dark"] .result-card {
            background: var(--bg-secondary, #1e293b);
            border-color: var(--border, #334155);
        }

        [data-theme="dark"] .select-field,
        [data-theme="dark"] .input-field,
        [data-theme="dark"] .textarea-field {
            background: rgba(59, 130, 246, 0.1); /* Blue tint for dark mode */
            border-color: #60a5fa; /* Lighter blue for dark mode */
            color: var(--text-primary, #f1f5f9);
        }

        [data-theme="dark"] .select-field:focus,
        [data-theme="dark"] .input-field:focus,
        [data-theme="dark"] .textarea-field:focus {
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
            background: rgba(59, 130, 246, 0.15);
        }

        /* Dark mode for step indicators */
        [data-theme="dark"] .step-number {
            background: var(--bg-tertiary, #334155);
            border-color: var(--border, #475569);
        }

        [data-theme="dark"] .step-indicator.step-1 .step-number,
        [data-theme="dark"] .step-indicator.step-2 .step-number,
        [data-theme="dark"] .step-indicator.step-3 .step-number {
            border-color: #60a5fa;
            background: rgba(59, 130, 246, 0.15);
        }

        [data-theme="dark"] .step-indicator.step-4 .step-number {
            border-color: #a78bfa;
            background: rgba(168, 85, 247, 0.15);
        }

        /* Dark mode for generate button */
        [data-theme="dark"] .btn-generate {
            background: rgba(34, 197, 94, 0.2) !important;
            border-color: #4ade80 !important;
            color: #86efac !important;
        }

        [data-theme="dark"] .btn-generate:hover {
            background: rgba(34, 197, 94, 0.3) !important;
            border-color: #22c55e !important;
        }

        [data-theme="dark"] .btn-generate i {
            color: #4ade80;
        }

        /* Dark mode for radio buttons */
        [data-theme="dark"] .radio-option {
            background: var(--bg-tertiary, #334155);
            border-color: var(--border, #475569);
        }

        [data-theme="dark"] .radio-encrypt {
            border-color: #a78bfa !important;
            background: rgba(168, 85, 247, 0.15) !important;
        }

        [data-theme="dark"] .radio-encrypt:hover {
            background: rgba(168, 85, 247, 0.25) !important;
            border-color: #9333ea !important;
        }

        [data-theme="dark"] .radio-encrypt .radio-input:checked + .radio-label {
            color: #c084fc;
        }

        [data-theme="dark"] .radio-decrypt {
            border-color: #fb923c !important;
            background: rgba(249, 115, 22, 0.15) !important;
        }

        [data-theme="dark"] .radio-decrypt:hover {
            background: rgba(249, 115, 22, 0.25) !important;
            border-color: #f97316 !important;
        }

        [data-theme="dark"] .radio-decrypt .radio-input:checked + .radio-label {
            color: #fdba74;
        }

        [data-theme="dark"] .tips-box {
            background: var(--bg-tertiary, #334155);
            border-color: var(--border, #334155);
        }

        [data-theme="dark"] .dropdown-menu-modern {
            background: var(--bg-secondary, #1e293b);
            border-color: var(--border, #334155);
        }

        [data-theme="dark"] .info-box {
            background: rgba(59, 130, 246, 0.2);
            border-color: #3b82f6;
        }
        
        /* Dark mode for form elements */
        [data-theme="dark"] .select-field:focus,
        [data-theme="dark"] .input-field:focus,
        [data-theme="dark"] .textarea-field:focus {
            border-color: var(--primary-light, #818cf8);
            box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.1);
        }
        
        [data-theme="dark"] .radio-label {
            color: var(--text-primary, #f1f5f9);
        }
        
        [data-theme="dark"] .tips-box strong {
            color: var(--text-primary, #f1f5f9);
        }
        
        [data-theme="dark"] .tips-box ul {
            color: var(--text-secondary, #cbd5e1);
        }
        
        [data-theme="dark"] .form-text {
            color: var(--text-muted, #94a3b8);
        }
        
        [data-theme="dark"] .share-alert {
            background: rgba(16, 185, 129, 0.15);
            border-color: #10b981;
        }
        
        [data-theme="dark"] .share-alert h6 {
            color: #10b981;
        }
        
        [data-theme="dark"] .result-header {
            color: var(--text-primary, #f1f5f9);
        }

        /* Operation Details Grid */
        .operation-details {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
            margin-bottom: 1rem;
            padding: 1rem;
            background: var(--bg-secondary);
            border-radius: 0.5rem;
        }

        @media (min-width: 480px) {
            .operation-details {
                grid-template-columns: 1fr 2fr;
            }
        }

        .operation-detail-item {
            font-size: 0.9375rem;
        }

        .operation-value {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .algorithm-code {
            font-size: 0.875rem;
            font-family: var(--font-mono, 'JetBrains Mono', monospace);
            background: rgba(0,0,0,0.05);
            padding: 0.25rem 0.5rem;
            border-radius: 0.25rem;
        }

        [data-theme="dark"] .algorithm-code {
            background: rgba(255,255,255,0.1);
            color: var(--text-primary);
        }
        
        /* Related Tools Section */
        .related-tools-section {
            margin: 3rem 0;
        }
        
        .related-tools-card {
            background: var(--bg-primary, #ffffff);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 1rem;
            padding: 2rem;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }
        
        .related-tools-header {
            text-align: center;
            margin-bottom: 2rem;
        }
        
        .related-tools-header h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary, #0f172a);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }
        
        .related-tools-header h3 i {
            color: var(--primary, #6366f1);
        }
        
        .related-tools-header p {
            color: var(--text-secondary, #475569);
            font-size: 0.9375rem;
            margin: 0;
        }
        
        .related-tools-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }
        
        @media (min-width: 768px) {
            .related-tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (min-width: 992px) {
            .related-tools-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        
        .related-tool-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1.25rem;
            background: var(--bg-secondary, #f8fafc);
            border: 1px solid var(--border, #e2e8f0);
            border-radius: 0.75rem;
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .related-tool-item:hover {
            background: var(--bg-tertiary, #f1f5f9);
            border-color: var(--primary, #6366f1);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
        }
        
        .related-tool-icon {
            width: 3rem;
            height: 3rem;
            background: var(--primary, #6366f1);
            border-radius: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        
        .related-tool-icon i {
            color: white;
            font-size: 1.25rem;
        }
        
        .related-tool-content {
            flex: 1;
        }
        
        .related-tool-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary, #0f172a);
            margin: 0 0 0.25rem 0;
        }
        
        .related-tool-content p {
            font-size: 0.875rem;
            color: var(--text-secondary, #475569);
            margin: 0;
            line-height: 1.4;
        }
        
        .related-tool-arrow {
            color: var(--text-muted, #94a3b8);
            font-size: 1rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        
        .related-tool-item:hover .related-tool-arrow {
            transform: translateX(4px);
            color: var(--primary, #6366f1);
        }
        
        [data-theme="dark"] .related-tools-card {
            background: var(--bg-secondary, #1e293b);
            border-color: var(--border, #334155);
        }
        
        [data-theme="dark"] .related-tools-header h3 {
            color: var(--text-primary, #f1f5f9);
        }
        
        [data-theme="dark"] .related-tools-header p {
            color: var(--text-secondary, #cbd5e1);
        }
        
        [data-theme="dark"] .related-tool-item {
            background: var(--bg-tertiary, #334155);
            border-color: var(--border, #334155);
        }
        
        [data-theme="dark"] .related-tool-item:hover {
            background: var(--bg-secondary, #1e293b);
            border-color: var(--primary-light, #818cf8);
        }
        
        [data-theme="dark"] .related-tool-content h4 {
            color: var(--text-primary, #f1f5f9);
        }
        
        [data-theme="dark"] .related-tool-content p {
            color: var(--text-secondary, #cbd5e1);
        }
        
        /* Output Placeholder - Enhanced Visibility */
        .output-placeholder {
            background: var(--bg-secondary, #f8fafc);
            border: 2px dashed var(--primary, #6366f1);
            border-radius: 0.75rem;
            padding: 3rem 2rem;
            text-align: center;
            color: var(--text-secondary, #475569);
            position: relative;
            animation: placeholderPulse 2s ease-in-out infinite;
            box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.2);
        }
        
        @keyframes placeholderPulse {
            0%, 100% {
                border-color: var(--primary, #6366f1);
                box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.2);
            }
            50% {
                border-color: var(--primary-light, #818cf8);
                box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
            }
        }
        
        .output-placeholder i {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            opacity: 0.7;
            display: block;
            color: var(--primary, #6366f1);
            animation: iconBounce 2s ease-in-out infinite;
        }
        
        @keyframes iconBounce {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-5px);
            }
        }
        
        .output-placeholder p {
            font-size: 1rem;
            margin: 0;
            font-weight: 600;
            color: var(--text-primary, #0f172a);
        }
        
        [data-theme="dark"] .output-placeholder {
            background: var(--bg-tertiary, #334155);
            border-color: var(--primary-light, #818cf8);
            color: var(--text-secondary, #cbd5e1);
        }
        
        [data-theme="dark"] .output-placeholder i {
            color: var(--primary-light, #818cf8);
        }
        
        [data-theme="dark"] .output-placeholder p {
            color: var(--text-primary, #f1f5f9);
        }
        
        /* Placeholder is shown by default, hidden by JavaScript when results appear */