/* Oscine: host the font files on your server and add @font-face here (400 + 800). Falls back to system fonts. */
:root{--bg:#030615;--panel:#252836;--line:#484d65;--acc:#00a4ff;--err:#ef3e59;--mut:#d3d4d9;color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:#fff;font:15px/20px Oscine,system-ui,-apple-system,"Segoe UI",sans-serif;height:100vh;display:flex;flex-direction:column;gap:10px;padding:10px}
.bar{background:var(--panel);border-radius:10px;height:52px;flex:none;display:flex;align-items:center;padding:0 16px}
h1{margin:0;font-size:18px;font-weight:800}
main{flex:1;min-height:0;display:grid;grid-template-columns:minmax(340px,520px) 1fr;gap:15px}
#side{display:flex;flex-direction:column;min-height:0;gap:10px}
.scroll{flex:1;overflow:auto;padding-right:6px;scrollbar-color:var(--line) var(--bg)}
fieldset{border:0;margin:0;padding:0;min-width:0}
fieldset:disabled{opacity:.3}
.card{background:var(--panel);border-radius:10px;margin-bottom:20px;padding-bottom:6px}
h2{margin:0;padding:14px 15px 4px;font-size:15px;font-weight:800}
.f{display:grid;gap:6px;padding:10px 15px}
.t b{font-weight:800}
small{display:block;color:var(--mut);font-size:12.5px;line-height:1.35}
input[type=text],input[type=number],select,textarea{width:100%;font:inherit;font-size:14px;color:#fff;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:8px 10px}
input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--acc);outline-offset:1px}
select{appearance:none;-webkit-appearance:none;padding-right:40px;cursor:pointer;transition:border-color .15s,box-shadow .15s;
  background:var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%2300a4ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E") no-repeat right 14px center/14px}
select:hover{border-color:var(--acc)}
select:focus{border-color:var(--acc);box-shadow:0 0 0 3px #00a4ff33}
option{background:var(--panel);color:#fff;padding:8px}
input.error{border-color:var(--err)}
textarea{resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sub{display:flex;align-items:center;gap:10px;font-size:13px}
.sub input{width:90px}
/* toggle switch */
.sw-row{display:flex;gap:12px;align-items:flex-start;padding:10px 15px;cursor:pointer}
input.sw{appearance:none;flex:none;width:44px;height:22px;margin:0;border:2px solid #fff;border-radius:22px;position:relative;cursor:pointer;transition:border-color .15s}
input.sw::before{content:"";position:absolute;top:3px;left:3px;width:12px;height:12px;border-radius:50%;background:#fff;transition:left .15s,background .15s}
input.sw:checked{border-color:var(--acc)}
input.sw:checked::before{left:25px;background:var(--acc)}
input.sw:disabled{opacity:.4}
/* color control */
.color{display:flex;align-items:center;gap:10px}
.color input[type=color]{width:42px;height:32px;padding:0;border:1px solid var(--line);border-radius:6px;background:var(--bg);cursor:pointer}
.color input[type=range]{flex:1;accent-color:var(--acc)}
.color output{width:40px;text-align:right;font-size:13px;color:var(--mut)}
.colors{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:4px 12px}
/* position picker */
.pos{display:grid;grid-template-columns:repeat(2,56px);gap:8px}
.pos input{position:absolute;opacity:0}
.pos label{position:relative;height:40px;border:2px solid var(--line);border-radius:6px;cursor:pointer}
.pos label::after{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--line)}
.pos .tl::after{top:4px;left:4px}.pos .tr::after{top:4px;right:4px}.pos .bl::after{bottom:4px;left:4px}.pos .br::after{bottom:4px;right:4px}
.pos input:checked+label{border-color:var(--acc)}
.pos input:checked+label::after{background:var(--acc)}
.pos input:focus-visible+label{outline:2px solid var(--acc)}
.margins{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;border:2px dotted var(--line);border-radius:4px;padding:8px}
.margins input:nth-child(1){grid-column:2}.margins input:nth-child(2){grid-column:1;grid-row:2}.margins input:nth-child(3){grid-column:3;grid-row:2}.margins input:nth-child(4){grid-column:2;grid-row:3}
.note{margin:10px 15px;border:1px solid #2196f3;border-radius:6px;padding:10px;background:#191c2b;font-size:14px;line-height:1.5}
/* buttons */
button{font:inherit;font-weight:800;border:0;border-radius:8px;background:var(--acc);color:#fff;padding:0 24px;height:44px;cursor:pointer}
button.ghost{background:transparent;border:1px solid var(--line)}
.actions{display:flex;gap:10px;align-items:center;flex:none}
.actions button{flex:1;height:56px;border-radius:10px}
#msg{flex:none;font-size:13px;color:var(--mut);min-height:20px}
#msg.err{color:var(--err)}
.loadrow{display:flex;justify-content:space-between;align-items:center;gap:10px}
/* preview */
#preview{display:flex;flex-direction:column;gap:8px;min-height:0}
.pbar{display:flex;flex-wrap:wrap;gap:8px}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{height:32px;padding:0 12px;border-radius:0;background:transparent;font-weight:400;font-size:13px}
.seg button.on{background:var(--acc)}
.seg button:disabled{opacity:.4;cursor:default}
.stage{flex:1;min-height:420px;position:relative;border-radius:10px;border:1px solid var(--panel);overflow:hidden;transition:background .3s}
.stage.dark{background:#000}.stage.light{background:#fff}
.stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0;color-scheme:normal}
.wait{position:absolute;inset:0;display:grid;place-content:center;gap:6px;text-align:center;padding:20px;color:var(--mut)}
.wait b{font-size:16px;color:#fff}
.stage.light .wait{color:#555}
.stage.light .wait b{color:#222}
#footer{flex:none;font-size:12px;color:var(--mut);text-align:right}
dialog{background:var(--panel);color:#fff;border:1px solid var(--line);border-radius:10px;width:min(640px,92vw);padding:20px}
dialog::backdrop{background:#000a}
dialog h3{margin:0 0 6px}
dialog textarea{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;margin:6px 0 12px}
.drow{display:flex;gap:10px}
.drow button{height:40px}
@media(max-width:700px){main{grid-template-columns:1fr}#preview{display:none}body{height:auto;min-height:100vh}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}