*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0b0f;--bg2:#11131a;--card:#161922;--card2:#1a1e28;--border:#232733;--border2:#2d3340;--text:#e8eaf0;--dim:#7a8190;--accent:#4f8cff;--hover:#6ba1ff;--green:#2ecc71;--red:#ff3b3b;--gold:#fdcb6e;--r:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.7;overflow-x:hidden}
.navbar{display:flex;justify-content:space-between;align-items:center;padding:.75rem 2rem;border-bottom:1px solid var(--border);position:sticky;top:0;background:rgba(10,11,15,.92);backdrop-filter:blur(12px);z-index:50}
.navbar .brand{font-weight:800;color:var(--text);text-decoration:none;font-size:1.05rem;display:flex;align-items:center;gap:.4rem}
.navbar .nav-links{display:flex;gap:1rem}
.navbar .nav-links a{color:var(--dim);text-decoration:none;font-size:.82rem;transition:color .2s;min-height:44px;display:inline-flex;align-items:center}
.navbar .nav-links a:hover,.navbar .nav-links a.active{color:var(--hover)}
main{max-width:1040px;margin:0 auto;padding:2.5rem 2rem 3rem}
h1{font-size:2.2rem;margin-bottom:.4rem;background:linear-gradient(135deg,#ff3b3b,#fdcb6e,#2ecc71,#4f8cff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.subtitle{color:var(--dim);font-size:1rem;margin-bottom:1.5rem}
h2{font-size:1.15rem;margin:1.5rem 0 .6rem;color:var(--hover)}
p{margin-bottom:.75rem}a{color:var(--hover)}
ul{margin:0 0 1rem 1.25rem}li{margin-bottom:.4rem}

/* Upload area */
.upload-area{border:2px dashed var(--border2);border-radius:var(--r);padding:3rem 2rem;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;margin-bottom:1.5rem;background:var(--card)}
.upload-area:hover,.upload-area.dragover{border-color:var(--accent);background:var(--card2)}
.upload-area .upload-icon{font-size:3rem;margin-bottom:.5rem}
.upload-area .upload-text{font-size:1.1rem;color:var(--text);font-weight:600;margin-bottom:.25rem}
.upload-area .upload-hint{font-size:.85rem;color:var(--dim)}

/* Controls */
.controls{background:var(--card);border:1px solid var(--border2);border-radius:var(--r);padding:1.5rem;margin-bottom:1.5rem;display:none}
.controls.show{display:block;animation:fade .2s}
.control-group{margin-bottom:1.25rem}
.control-group:last-child{margin-bottom:0}
.control-label{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:var(--dim);margin-bottom:.5rem;font-weight:600}
.control-label .value{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums;font-family:"Courier New",monospace}
input[type="range"]{width:100%;-webkit-appearance:none;appearance:none;height:6px;background:var(--bg2);border-radius:3px;outline:none}
input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;background:var(--accent);border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(79,140,255,.4)}
input[type="range"]::-moz-range-thumb{width:20px;height:20px;background:var(--accent);border-radius:50%;cursor:pointer;border:none}
.palette-btns{display:flex;gap:.5rem;flex-wrap:wrap}
.palette-btn{background:var(--bg2);border:1px solid var(--border2);border-radius:8px;padding:.5rem 1rem;font-size:.8rem;color:var(--dim);cursor:pointer;transition:all .15s;font-family:inherit;flex:1;text-align:center;min-width:80px}
.palette-btn:hover{border-color:var(--accent);color:var(--text)}
.palette-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-row{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1rem}
.btn{background:linear-gradient(135deg,var(--accent),#3a78f0);color:#fff;border:none;border-radius:10px;padding:.75rem 1.8rem;font-size:.9rem;font-weight:600;cursor:pointer;transition:transform .1s,box-shadow .15s;font-family:inherit;min-height:44px;box-shadow:0 4px 14px rgba(79,140,255,.3)}
.btn:hover{box-shadow:0 6px 20px rgba(79,140,255,.45)}
.btn:active{transform:scale(.97)}
.btn-secondary{background:var(--bg2);border:1px solid var(--border2);box-shadow:none}
.btn-secondary:hover{background:var(--card);box-shadow:none}
.btn-success{background:linear-gradient(135deg,var(--green),#27ae60);box-shadow:0 4px 14px rgba(46,204,113,.3)}
.btn-success:hover{box-shadow:0 6px 20px rgba(46,204,113,.45)}

/* Preview */
.preview-wrap{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem}
.preview-card{background:var(--card);border:1px solid var(--border2);border-radius:var(--r);padding:1rem}
.preview-card .label{font-size:.78rem;color:var(--dim);text-transform:uppercase;letter-spacing:.05em;font-weight:600;margin-bottom:.75rem;text-align:center}
.preview-card canvas{width:100%;height:auto;border-radius:8px;display:block;background:var(--bg);image-rendering:pixelated;image-rendering:crisp-edges}
.preview-card .empty{text-align:center;color:var(--dim);padding:3rem 1rem;font-size:.85rem}

/* Hidden canvas for processing */
#srcCanvas{display:none}

.stats-footer{text-align:center;margin:1.5rem 0;font-size:.78rem;color:var(--dim)}
.stats-footer strong{color:var(--hover);font-variant-numeric:tabular-nums}
.stat-divider{margin:0 .6rem;opacity:.4}
footer{text-align:center;padding:1.5rem 2rem;color:var(--dim);font-size:.75rem;border-top:1px solid var(--border)}
footer a{color:var(--hover);text-decoration:none}
.seo-section{color:var(--dim);font-size:.88rem;margin-top:2.5rem;line-height:1.8}
.seo-section h2{color:var(--text)}

@keyframes fade{0%{opacity:0}100%{opacity:1}}

@media(max-width:760px){
  main{padding:2rem 1rem 3rem}
  h1{font-size:1.6rem}
  .navbar{padding:.75rem 1rem}
  .navbar .nav-links{gap:.6rem}
  .preview-wrap{grid-template-columns:1fr}
  .upload-area{padding:2rem 1rem}
}