@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#8B5CF6;--secondary:#A78BFA;--accent:#C4B5FD;--neon:#22D3EE;--bg:#0F0F1A;--surface:#1A1A2E;--surface2:#25254B;--text:#E0E0FF;--text-dim:#8888AA;--border:#2D2D5A;--radius:12px;--font:'Inter',system-ui,sans-serif}
html{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6}
body{min-height:100vh;display:flex;flex-direction:column}
.header{padding:.65rem 1.25rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);flex-wrap:wrap;gap:.5rem}
.header h1{font-size:1rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--neon));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.header-actions{display:flex;gap:.3rem}
.btn{padding:.35rem .7rem;border-radius:8px;font-size:.72rem;font-weight:600;cursor:pointer;border:none;transition:all .15s;font-family:var(--font)}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{opacity:.85}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-dim)}.btn-ghost:hover{background:var(--surface2);color:var(--text)}
.main{flex:1;display:grid;grid-template-columns:200px 1fr 260px;gap:.75rem;padding:.75rem;overflow:hidden}
/* Controls */
.controls{display:flex;flex-direction:column;gap:.5rem}
.ctrl-group{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.5rem .6rem}
.ctrl-group label{font-size:.68rem;font-weight:700;color:var(--text-dim);display:block;margin-bottom:.2rem}
.input{width:100%;padding:.3rem .4rem;border-radius:6px;border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:.75rem;outline:none;font-family:var(--font)}
.slider{width:100%;appearance:none;background:var(--surface2);height:5px;border-radius:3px;outline:none}
.slider::-webkit-slider-thumb{appearance:none;width:14px;height:14px;border-radius:50%;background:var(--primary);cursor:pointer}
.preset-list{display:flex;flex-wrap:wrap;gap:.2rem}
.preset{font-size:.62rem;padding:.2rem .4rem}
/* Grid Preview */
.grid-preview{border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);padding:.5rem;display:grid;overflow:auto;transition:all .3s}
.grid-item{background:rgba(139,92,246,.15);border:1px dashed var(--neon);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;color:var(--neon);min-height:40px;cursor:pointer;transition:all .15s;position:relative}
.grid-item:hover{background:rgba(139,92,246,.25);border-style:solid}
.grid-item .item-label{pointer-events:none}
.item-controls{position:absolute;top:2px;right:2px;display:none;gap:2px}
.grid-item:hover .item-controls{display:flex}
.item-ctrl-btn{width:16px;height:16px;border-radius:3px;border:none;background:var(--surface2);color:var(--text-dim);font-size:.6rem;cursor:pointer;display:flex;align-items:center;justify-content:center}
/* Output */
.output-panel{display:flex;flex-direction:column;gap:.3rem}
.out-tabs{display:flex;gap:2px}
.out-tab{padding:.3rem .5rem;border-radius:6px;border:none;background:transparent;color:var(--text-dim);font-size:.68rem;font-weight:600;cursor:pointer;font-family:var(--font);transition:all .15s}
.out-tab.active{background:var(--primary);color:#fff}
.code-output{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.5rem;font-family:'Courier New',monospace;font-size:.72rem;color:var(--neon);overflow:auto;white-space:pre-wrap;margin:0;line-height:1.5}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--surface);border:1px solid var(--primary);color:var(--primary);padding:.4rem .8rem;border-radius:8px;font-size:.72rem;z-index:200;transform:translateY(80px);opacity:0;transition:all .3s}
.toast.show{transform:translateY(0);opacity:1}
@media(max-width:768px){.main{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}}