*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,'Open Sans','Helvetica Neue',sans-serif;line-height:1.6;background-color:#121212;color:#fff;min-height:100vh;padding:2rem}.container{max-width:1400px;margin:0 auto}header{text-align:center;margin-bottom:2rem}header h1{font-size:2.5rem;color:#fff;margin-bottom:.5rem}header p{font-size:1.2rem;color:#b0b0b0}main{background:#1e1e1e;padding:2rem;border-radius:10px;box-shadow:0 4px 6px rgba(0,0,0,.3)}.upload-section{text-align:center;margin-bottom:2rem}.upload-button{display:inline-block;background-color:#3498db;color:#fff;padding:.8rem 1.5rem;border-radius:4px;cursor:pointer;transition:background-color .3s ease;font-size:1rem}.upload-button:hover{background-color:#2980b9}input[type=file]{display:none}.content-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.preview-section,.result-section{background:#2d2d2d;padding:1.5rem;border-radius:8px}.preview-section h2,.result-section h2{color:#fff;margin-bottom:1rem;font-size:1.5rem}.image-container{max-width:100%;margin:1rem 0;text-align:center;background:#1e1e1e;padding:1rem;border-radius:4px}.image-container img{max-width:100%;max-height:400px;object-fit:contain;border-radius:4px}.dimensions-info{color:#b0b0b0;margin:1rem 0}.controls-section{margin-top:1.5rem}.resize-controls{display:flex;flex-direction:column;gap:1rem}.dimensions-control{display:flex;align-items:center;gap:.5rem}.aspect-lock{background:#1e1e1e;border:1px solid #404040;border-radius:4px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease}.aspect-lock.locked{background-color:#3498db;border-color:#2980b9}.aspect-lock.unlocked{background-color:#1e1e1e}.lock-icon{font-size:1.2rem}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-group label{color:#fff;font-weight:500}.input-group input,.input-group select{padding:.5rem;background:#1e1e1e;border:1px solid #404040;border-radius:4px;font-size:1rem;color:#fff}.input-group input:focus,.input-group select:focus{outline:none;border-color:#3498db}#resizeButton{background-color:#3498db;color:#fff;border:none;padding:.8rem 1.5rem;border-radius:4px;font-size:1rem;cursor:pointer;transition:background-color .3s ease}#resizeButton:hover{background-color:#2980b9}#resizeButton:disabled{background-color:#404040;cursor:not-allowed}.download-button{display:inline-block;background-color:#2ecc71;color:#fff;padding:.8rem 1.5rem;border-radius:4px;text-decoration:none;font-weight:500;transition:background-color .3s ease;text-align:center}.download-button:hover{background-color:#27ae60}.ad-container{width:100%;min-height:100px;background-color:#1e1e1e;margin:1.5rem 0;padding:1rem;border-radius:8px;text-align:center;display:flex;align-items:center;justify-content:center}.seo-content{background:#1e1e1e;padding:2rem;margin-top:2rem;border-radius:10px;color:#b0b0b0;line-height:1.7}.seo-content h2{color:#fff;margin-bottom:1rem;font-size:1.7rem}.seo-content h3{color:#fff;margin:1.5rem 0 1rem;font-size:1.4rem}.seo-content p{margin-bottom:1rem}.seo-content ul{padding-left:2rem;margin-top:1rem}.seo-content li{margin-bottom:.7rem}footer{margin-top:2rem;text-align:center;color:gray;font-size:.9rem}@media (max-width:768px){body{padding:1rem}.content-wrapper{grid-template-columns:1fr}.seo-content{padding:1.5rem}}