.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)}}