*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#F9FAFB;--card:#fff;--text:#111827;--text-light:#6B7280;--border:#E5E7EB;--primary:#8B5CF6;--primary-dark:#7C3AED;--success:#10B981;--danger:#EF4444;--warning:#F59E0B;--radius:.75rem;--shadow:0 4px 6px -1px rgba(0,0,0,.05)}
body.dark{--bg:#0F172A;--card:#1E293B;--text:#F1F5F9;--text-light:#94A3B8;--border:#334155}
body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif;padding:1.5rem;transition:.2s}
.container{max-width:1300px;margin:0 auto}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.25rem;margin-bottom:1rem;border:1px solid var(--border)}
.flex{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;justify-content:space-between}
.flex-center{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem}
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.5rem}
.upload-area{border:2px dashed var(--border);border-radius:var(--radius);padding:2.5rem 2rem;text-align:center;transition:.2s;background:var(--card);position:relative;overflow:hidden}
.upload-area:hover{border-color:var(--primary);background:rgba(139,92,246,.02)}
.upload-area.drag-over{border-color:var(--primary);background:rgba(139,92,246,.08)}
.upload-area input[type=file]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;z-index:10;font-size:200px;filter:alpha(opacity=0)}
.btn{padding:.55rem 1.1rem;border-radius:2rem;font-weight:600;border:none;cursor:pointer;transition:.2s;display:inline-flex;align-items:center;gap:.4rem;font-size:.85rem;font-family:inherit;background:var(--bg);color:var(--text);border:1px solid var(--border);pointer-events:none}
.btn-primary{background:var(--primary);color:#fff;border:none}
.btn-primary:hover{background:var(--primary-dark)}
.btn-primary:disabled{opacity:.7;cursor:wait}
.btn-success{background:var(--success);color:#fff;border:none;pointer-events:auto;cursor:pointer;transition:all .3s ease}
.btn-success:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(16,185,129,.35)}
.btn-success:disabled,
.btn-success[disabled]{opacity:.45;cursor:not-allowed;filter:grayscale(40%);pointer-events:none}
.btn-success.is-ready{
    opacity:1;
    animation:pulse-green 1.5s ease-in-out;
}
@keyframes pulse-green{
    0%,100%{box-shadow:0 0 0 0 rgba(16,185,129,.7)}
    50%{box-shadow:0 0 0 10px rgba(16,185,129,0)}
}
.btn-danger{background:var(--danger);color:#fff;border:none;pointer-events:auto;cursor:pointer}
.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border);pointer-events:auto;cursor:pointer}
.btn-secondary:hover{background:var(--border)}
.btn-sm{padding:.3rem .7rem;font-size:.75rem}
.badge{display:inline-block;padding:.25rem .7rem;border-radius:2rem;font-size:.72rem;font-weight:600;background:rgba(139,92,246,.15);color:var(--primary)}
.canvas-wrapper{position:relative;background:var(--bg);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);touch-action:none;user-select:none;display:flex;align-items:center;justify-content:center;min-height:400px;
    background-image:linear-gradient(45deg, #e5e7eb 25%, transparent 25%),linear-gradient(-45deg, #e5e7eb 25%, transparent 25%),linear-gradient(45deg, transparent 75%, #e5e7eb 75%),linear-gradient(-45deg, transparent 75%, #e5e7eb 75%);
    background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px}
body.dark .canvas-wrapper{background-image:linear-gradient(45deg, #334155 25%, transparent 25%),linear-gradient(-45deg, #334155 25%, transparent 25%),linear-gradient(45deg, transparent 75%, #334155 75%),linear-gradient(-45deg, transparent 75%, #334155 75%)}
.canvas-wrapper canvas{display:block;max-width:100%;max-height:600px;touch-action:none;cursor:crosshair}
.preview-card{background:var(--bg);border-radius:var(--radius);padding:.75rem;border:1px solid var(--border);text-align:center}
.preview-card img{max-width:100%;max-height:200px;object-fit:contain;border-radius:.5rem;background-image:linear-gradient(45deg, #e5e7eb 25%, transparent 25%),linear-gradient(-45deg, #e5e7eb 25%, transparent 25%),linear-gradient(45deg, transparent 75%, #e5e7eb 75%),linear-gradient(-45deg, transparent 75%, #e5e7eb 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0px}
.stat-card{background:var(--bg);border-radius:var(--radius);padding:.6rem;text-align:center;border:1px solid var(--border)}
.stat-value{font-size:1.1rem;font-weight:800}
.stat-label{font-size:.7rem;color:var(--text-light)}
.slider-group label{display:flex;justify-content:space-between;font-size:.75rem;font-weight:500;margin-bottom:.25rem}
.slider-group input[type=range]{width:100%;accent-color:var(--primary);background:var(--border);border-radius:.5rem;height:5px;cursor:pointer}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--text);color:#fff;padding:.7rem 1.1rem;border-radius:2rem;opacity:0;transition:.2s;z-index:10000;font-size:.85rem;pointer-events:none;box-shadow:0 10px 25px rgba(0,0,0,.2)}
.toast.show{opacity:1}
input[type=number],input[type=text],select,input[type=color]{padding:.4rem .55rem;border:1px solid var(--border);border-radius:.5rem;background:var(--card);color:var(--text);font-size:.82rem;width:100%;font-family:inherit}
label{font-size:.75rem;font-weight:600;color:var(--text-light)}
.color-swatch{display:inline-block;width:34px;height:34px;border-radius:.5rem;border:2px solid var(--border);cursor:pointer;position:relative;transition:.2s}
.color-swatch:hover{transform:scale(1.1);border-color:var(--primary)}
.color-swatch .del-badge{position:absolute;top:-6px;right:-6px;background:var(--danger);color:#fff;width:16px;height:16px;border-radius:50%;font-size:10px;line-height:16px;text-align:center;cursor:pointer;font-weight:700;display:none}
.color-swatch:hover .del-badge{display:block}
.color-picker-banner{background:rgba(139,92,246,.08);border-left:3px solid var(--primary);padding:.5rem .75rem;border-radius:.4rem;font-size:.78rem;color:var(--text-light);margin-top:.5rem;display:flex;align-items:center;gap:.5rem}
.color-picker-banner i{color:var(--primary);font-size:1rem}
@media(max-width:768px){body{padding:.75rem}.grid-2{grid-template-columns:1fr}}