.app-icon{font-size:2.5rem;color:var(--primary-color);margin-bottom:var(--spacing-md);display:inline-block}.converter-panel{margin-bottom:var(--spacing-xl)}.button-group{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.button-group .btn{min-width:100px}.textarea-input,textarea{font-family:'Courier New',monospace;font-size:.9rem;line-height:1.4;min-height:120px}.error-message{background:rgba(239,68,68,.1);border:1px solid #ef4444;border-radius:var(--radius-md);padding:var(--spacing-md);margin:var(--spacing-md) 0;color:#dc2626;font-weight:500}.info-section{border-top:2px solid var(--border-color);padding-top:var(--spacing-xl)}.info-grid h4{color:var(--primary-color);margin-bottom:var(--spacing-sm);font-size:1.1rem}.info-grid ul{list-style:none;padding:0}.info-grid li{padding:var(--spacing-xs) 0;border-bottom:1px solid var(--border-color)}.info-grid li:last-child{border-bottom:none}.info-grid code{background:var(--bg-secondary);padding:2px 6px;border-radius:4px;font-family:'Courier New',monospace;font-size:.85rem;color:var(--primary-color)}.tab-content{animation:.3s ease-in-out fadeIn}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.grid-2{grid-template-columns:1fr;gap:var(--spacing-lg)}.button-group{justify-content:center}.button-group .btn{flex:1;min-width:auto}.textarea-input{font-size:.85rem}.info-grid{grid-template-columns:1fr}}.btn.copied{background:var(--success-color,#10b981)!important;color:#fff!important;transform:scale(.95);transition:.2s}.btn.copied:after{content:' ✓'}.btn:focus,.textarea-input:focus{outline:2px solid var(--primary-color);outline-offset:2px}.btn.loading{opacity:.7;cursor:not-allowed;position:relative}.btn.loading:after{content:'';position:absolute;width:16px;height:16px;margin:auto;border:2px solid transparent;border-top-color:currentColor;border-radius:50%;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}.saved-items-section .card-header{display:flex;justify-content:space-between;align-items:center}.saved-buttons{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.saved-item-btn{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);font-size:.9rem;position:relative;padding-right:var(--spacing-xl);max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.saved-item-btn:hover{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.remove-saved{position:absolute;right:var(--spacing-xs);top:50%;transform:translateY(-50%);font-size:1.2rem;font-weight:700;color:var(--text-secondary);cursor:pointer;padding:0 var(--spacing-xs)}.remove-saved:hover{color:#ef4444}.btn-sm{padding:var(--spacing-xs) var(--spacing-sm);font-size:.85rem;min-width:auto}.mime-info h4{color:var(--primary-color);margin-bottom:var(--spacing-sm);font-size:1.1rem}.mime-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:var(--spacing-xs)}.mime-list li{padding:var(--spacing-xs);border-bottom:1px solid var(--border-color)}.mime-info code{background:var(--bg-secondary);padding:2px 6px;border-radius:4px;font-family:'Courier New',monospace;font-size:.85rem;color:var(--primary-color)}.textarea-input[readonly]:hover{cursor:pointer;border-color:var(--primary-color)}.textarea-input[readonly]:focus{cursor:text}.input-method-toggle{display:flex;gap:var(--spacing-sm)}.input-method-toggle .btn.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.file-input{width:100%;padding:var(--spacing-sm);border:2px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-primary);color:var(--text-primary);cursor:pointer;transition:border-color var(--transition-medium)}.file-input:hover{border-color:var(--primary-color)}.file-input:focus{outline:0;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(59,130,246,.1)}.file-info{padding:var(--spacing-sm);background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.file-info p{margin:0;font-size:.9rem;color:var(--text-secondary)}.file-info strong{color:var(--text-primary)}.image-preview-container{margin-top:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-secondary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.image-preview-header{margin-bottom:var(--spacing-sm);font-size:.9rem;color:var(--text-primary)}.image-preview-wrapper{display:flex;justify-content:center;align-items:center;padding:var(--spacing-md);background:var(--bg-primary);border-radius:var(--radius-md);min-height:100px}.decoded-image-preview{max-width:100%;max-height:400px;object-fit:contain;border-radius:var(--radius-sm);box-shadow:0 2px 8px rgba(0,0,0,.1)}@media (max-width:768px){.decoded-image-preview{max-height:250px}}