:root{--bg:#0f172a;--card:#1e293b;--mut:#94a3b8;--bd:#334155;--acc:#3b82f6;--txt:#e2e8f0}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--txt)}
header{display:flex;align-items:center;gap:24px;padding:14px 22px;background:var(--card);border-bottom:1px solid var(--bd);flex-wrap:wrap}
h1{font-size:18px;margin:0}
nav{display:flex;gap:8px;align-items:center;margin-left:auto}
.tab{background:transparent;color:var(--mut);border:1px solid var(--bd);padding:7px 16px;border-radius:8px;cursor:pointer}
.tab.active{background:var(--acc);color:#fff;border-color:var(--acc)}
.diag{color:var(--mut);font-size:13px;text-decoration:none;margin-left:8px}
main{padding:22px;max-width:1200px;margin:0 auto}
.panel{display:none}.panel.active{display:block}
.grid{display:grid;grid-template-columns:1fr 560px;gap:26px;align-items:start}
@media(max-width:1000px){.grid{grid-template-columns:1fr}}
.controls{display:flex;flex-direction:column;gap:14px;background:var(--card);padding:20px;border-radius:12px;border:1px solid var(--bd)}
label{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--mut)}
.row{display:flex;gap:14px}.row>label{flex:1}
input,select,textarea{background:#0b1220;color:var(--txt);border:1px solid var(--bd);border-radius:8px;padding:9px 10px;font:inherit;width:100%}
input[type=color]{padding:3px;height:40px;cursor:pointer}
input[type=checkbox]{width:auto}
.rng-head{display:flex;justify-content:space-between;align-items:baseline}
.rng-val{color:var(--acc);font-weight:700;font-variant-numeric:tabular-nums}
input[type=range]{-webkit-appearance:none;appearance:none;background:transparent;border:none;padding:0;height:22px;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:999px;background:var(--bd)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;margin-top:-6px;border-radius:50%;background:var(--acc);border:2px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.5)}
input[type=range]::-moz-range-track{height:6px;border-radius:999px;background:var(--bd)}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--acc);border:2px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.5)}
input[type=range]:focus{outline:none}
input[type=range]:focus::-webkit-slider-thumb{box-shadow:0 0 0 3px rgba(59,130,246,.4)}
.check{flex-direction:row;align-items:center;gap:8px;color:var(--txt)}
textarea{resize:vertical;min-height:120px}
small{color:var(--mut);font-size:12px;align-self:flex-end}
details summary{cursor:pointer;color:var(--mut);font-size:13px;padding:6px 0}
details{border-top:1px solid var(--bd);padding-top:6px}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px}
.thumbs img{height:64px;width:52px;object-fit:cover;border-radius:6px;border:2px solid transparent;cursor:pointer;flex:0 0 auto}
.thumbs img.sel{border-color:var(--acc)}
.actions{display:flex;gap:10px;flex-wrap:wrap}
button{background:#334155;color:var(--txt);border:none;padding:10px 16px;border-radius:8px;cursor:pointer;font:inherit}
button:hover{filter:brightness(1.15)}
button.primary{background:var(--acc);color:#fff}
.presets{display:flex;gap:8px;align-items:center;border-top:1px solid var(--bd);padding-top:14px}
.presets input{flex:1}.presets select{flex:1}
.preview{position:sticky;top:22px}
.preview-box{position:relative;background:repeating-conic-gradient(#1a2433 0 25%,#0b1220 0 50%) 50%/24px 24px;border:1px solid var(--bd);border-radius:12px;padding:14px;display:flex;justify-content:center;align-items:center;min-height:420px}
#previewImg{max-width:100%;border-radius:6px;box-shadow:0 8px 30px rgba(0,0,0,.5)}
.hint{color:var(--mut);font-size:12px;text-align:center;margin:10px 0 0}
.spinner{position:absolute;width:42px;height:42px;border:4px solid var(--bd);border-top-color:var(--acc);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.hidden{display:none}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-top:16px}
.gcard{background:var(--card);border:1px solid var(--bd);border-radius:10px;overflow:hidden}
.gcard img{width:100%;display:block;background:repeating-conic-gradient(#1a2433 0 25%,#0b1220 0 50%) 50%/18px 18px}
.gcard .meta{padding:8px 10px;font-size:12px;color:var(--mut);display:flex;justify-content:space-between;align-items:center}
.gcard a{color:var(--acc);text-decoration:none}
.gcard button{padding:4px 8px;font-size:12px;background:#7f1d1d;color:#fff}
#btnReload{margin-bottom:4px}