:root{--display:'Fraunces',Georgia,serif;--body:'Manrope',system-ui,sans-serif}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body)}
header{position:relative;z-index:2;display:flex;background:var(--bg);border-bottom:1px solid var(--line)}
idk-header{min-height:34px}
a{color:var(--brass)}
h1,h2{font-family:var(--display);font-weight:500;margin:0 0 10px}
p{line-height:1.6;margin:8px 0}
main{position:relative;min-height:calc(100dvh - 70px)}
.intro{position:relative;z-index:1;padding:24px 24px 0;pointer-events:none;max-width:540px}
.intro h1{font-size:30px}.intro p{color:var(--ink-2);font-size:14px}
#learning-graph{width:100%;height:calc(100dvh - 290px);min-height:330px;display:block;touch-action:none}
.edge{stroke:var(--line);stroke-width:1.5}
.node{cursor:pointer}.node circle{fill:var(--card);stroke:var(--violet);stroke-width:2}
.node.door circle{stroke:var(--brass)}.node.new circle{stroke:var(--green);fill:#29473C}.node.knew circle{stroke:var(--ink-2)}
.node.selected circle,.node:focus circle{stroke:var(--brass);stroke-width:4}
.node text{fill:var(--ink);font:13px var(--body);text-anchor:middle;paint-order:stroke;stroke:var(--bg);stroke-width:4px;stroke-linejoin:round;pointer-events:none}
#empty{margin:50px auto;padding:24px;max-width:470px;text-align:center}#empty[hidden],#detail[hidden]{display:none}
.action,button{display:inline-block;border:1px solid var(--line);border-radius:24px;padding:10px 16px;font:inherit;font-size:13px;background:var(--card);color:var(--ink);cursor:pointer;text-decoration:none}
.action{background:var(--brass);color:var(--bg);border-color:var(--brass);margin-top:14px}
#detail{position:fixed;z-index:4;right:20px;top:110px;width:min(360px,calc(100% - 40px));max-height:70dvh;overflow:auto;background:var(--card);padding:28px;border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 50px #0005}
#close-detail{float:right;padding:2px 10px;font-size:24px}#node-state{color:var(--brass);font-size:12px}#node-description{color:var(--ink-2);font-size:14px}
.map-tools{padding:8px 24px;display:flex;align-items:center;gap:14px;font-size:12px;color:var(--ink-2);flex-wrap:wrap}
#list{margin:12px 24px 24px;max-width:650px}summary{cursor:pointer}#node-list{padding:0;list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.fallback{padding:24px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--brass);outline-offset:4px}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
#share-dialog{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:20px;padding:24px;width:min(620px,calc(100% - 24px));max-height:90dvh;overflow:auto;font:14px var(--body)}
#share-dialog::backdrop{background:#0009}#share-dialog section{border-top:1px solid var(--line);margin-top:20px;padding-top:12px}#share-dialog h3{font-size:16px}#share-dialog p{color:var(--ink-2)}
.dialog-close{float:right;font-size:22px;padding:2px 10px}#share-dialog label{display:block;margin:12px 0 6px}
#share-dialog select,#share-dialog input:not([type=checkbox]):not([type=file]){width:100%;padding:10px;background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:8px;font:inherit}
#share-dialog .check{display:flex;gap:8px;align-items:center}#image-preview{width:100%;border:1px solid var(--line);border-radius:10px;margin-top:10px}
.action-row{display:flex;gap:8px;flex-wrap:wrap}button:disabled{opacity:.45;cursor:default}#restore-preview{padding:12px;border:1px solid var(--brass);border-radius:12px;margin-top:12px}
@media(max-width:600px){.intro{padding:20px 16px 0}.intro h1{font-size:26px}#detail{top:auto;bottom:16px;max-height:50dvh}.map-tools{padding:8px 16px}.map-tools span{display:none}}