:root{--bg-color: #0f172a;--surface-color: #1e293b;--primary-color: #3b82f6;--primary-hover: #2563eb;--text-color: #f8fafc;--text-muted: #94a3b8;--border-color: #334155;--grid-line-color: rgba(59, 130, 246, .5);--error-color: #ef4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.5;min-height:100vh;display:flex;flex-direction:column}#app{max-width:1200px;margin:0 auto;padding:2rem;width:100%;flex:1;display:flex;flex-direction:column;gap:2rem}header{text-align:center}header h1{font-size:2.5rem;font-weight:700;background:linear-gradient(to right,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:.5rem}header p{color:var(--text-muted)}.drop-zone{background:var(--surface-color);border:2px dashed var(--border-color);border-radius:1rem;padding:4rem 2rem;text-align:center;cursor:pointer;transition:all .2s ease}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--primary-color);background:#3b82f60d}.drop-zone .icon{font-size:3rem;margin-bottom:1rem}.drop-zone span{color:var(--primary-color);font-weight:600;text-decoration:underline}.workspace{display:flex;flex-direction:column;gap:2rem;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.controls-section{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;background:var(--surface-color);padding:1.5rem;border-radius:1rem;border:1px solid var(--border-color);align-items:flex-end}.control-group{display:flex;flex-direction:column;gap:.5rem}.control-group label{font-size:.875rem;font-weight:500;color:var(--text-muted)}.control-group input{background:var(--bg-color);border:1px solid var(--border-color);color:var(--text-color);padding:.5rem 1rem;border-radius:.5rem;font-size:1rem;width:100px}.control-group input:focus{outline:none;border-color:var(--primary-color)}button{padding:.5rem 1.5rem;border-radius:.5rem;font-weight:600;cursor:pointer;border:none;font-size:1rem;transition:transform .1s;height:42px}button:active{transform:scale(.98)}.primary-btn{background:var(--primary-color);color:#fff}.primary-btn:hover{background:var(--primary-hover)}.secondary-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-muted)}.secondary-btn:hover{border-color:var(--text-color);color:var(--text-color)}.preview-section{display:flex;flex-direction:column;align-items:center;gap:1rem}.preview-wrapper{position:relative;border-radius:.5rem;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;max-width:100%}#preview-img,canvas{display:block;max-width:100%;height:auto;max-height:70vh}#grid-overlay{position:absolute;inset:0;pointer-events:none;display:grid}.grid-cell{border:1px solid var(--grid-line-color);box-sizing:border-box}.preview-info{color:var(--text-muted);font-size:.875rem}