/* Layout: full-screen infinite canvas; thin top bar, floating dock bottom-centre, zoom bottom-right; femedia visual language */
:root{
  --bg:#F4F5F8; --dot:#D3D6DE; --surface:#FFFFFF; --surface2:#F1F2F6; --hover:#EEF0F4;
  --fg:#1F2330; --fg2:#4A4F5E; --muted:#6B7080; --line:#E4E6EC; --line2:#C9CCD6;
  --accent:#4F46E5; --accent-ink:#3730A3; --accent-weak:#ECEBFD; --on-accent:#FFFFFF;
  --root-bg:#1F2330; --root-fg:#FFFFFF;
  --logo-tile:#D9464F; --logo-word:#3B2F7A;
  --danger:#C9343E; --ok:#0E7A6E;
  --shadow:0 1px 2px rgba(31,35,48,.06),0 6px 20px rgba(31,35,48,.09);
  --c0:#4F46E5; --c1:#C2410C; --c2:#0E7A6E; --c3:#C0267A; --c4:#1D6FD8; --c5:#B45309; --c6:#C9343E; --c7:#4D7C0F;
  --tint:11%; --edge-lift:0%;
  --font:"Golos Text",system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#121419; --dot:#2A2E38; --surface:#1B1E26; --surface2:#232733; --hover:#272B36;
  --fg:#ECEEF3; --fg2:#C3C7D1; --muted:#9398A6; --line:#2B2F3A; --line2:#3D4250;
  --accent:#8C86F7; --accent-ink:#B7B3FA; --accent-weak:#26244A; --on-accent:#15142A;
  --root-bg:#ECEEF3; --root-fg:#14161C; --logo-word:#C4BDF8;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.45);
  --tint:22%; --edge-lift:22%; color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#121419; --dot:#2A2E38; --surface:#1B1E26; --surface2:#232733; --hover:#272B36;
  --fg:#ECEEF3; --fg2:#C3C7D1; --muted:#9398A6; --line:#2B2F3A; --line2:#3D4250;
  --accent:#8C86F7; --accent-ink:#B7B3FA; --accent-weak:#26244A; --on-accent:#15142A;
  --root-bg:#ECEEF3; --root-fg:#14161C; --logo-word:#C4BDF8;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.45);
  --tint:22%; --edge-lift:22%; color-scheme:dark;
}
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:14px;overflow:hidden;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;cursor:pointer}
button:focus-visible,select:focus-visible,textarea:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
#app{position:fixed;inset:0;display:flex;flex-direction:column}

/* top bar */
.top{height:56px;flex:none;display:flex;align-items:center;gap:14px;padding:0 16px;padding-top:env(safe-area-inset-top,0px);background:var(--surface);border-bottom:1px solid var(--line);position:relative;z-index:20}
.logo{display:flex;align-items:center;gap:3px;flex:none;user-select:none}
.logo .tile{width:28px;height:28px;border-radius:7px;background:var(--logo-tile);color:#fff;font-weight:700;font-size:16px;display:grid;place-items:center;transform:rotate(-6deg)}
.logo .word{font-weight:700;font-size:19px;color:var(--logo-word);letter-spacing:-.01em}
.vsep{width:1px;height:24px;background:var(--line);flex:none}
.mapbtn{display:flex;align-items:center;gap:8px;border:0;background:transparent;border-radius:8px;padding:6px 8px;min-width:0;text-align:left}
.mapbtn:hover{background:var(--hover)}
.mapbtn .t{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:32vw}
.mapbtn .s{font-size:11px;color:var(--muted);white-space:nowrap}
.mapbtn svg{flex:none;color:var(--muted)}
.spacer{flex:1}
.people{display:flex;align-items:center}
.people .av{width:30px;height:30px;border-radius:50%;border:2px solid var(--surface);margin-left:-8px;background:var(--surface2);object-fit:cover;display:block}
.people .av:first-child{margin-left:0}
.people .more{font-size:12px;color:var(--muted);margin-left:6px}
.livechip{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--fg2);padding:4px 10px;border-radius:999px;background:var(--surface2)}
.livechip i{width:7px;height:7px;border-radius:50%;background:var(--ok)}
.livechip.off i{background:var(--line2)}
.btn{height:34px;display:inline-flex;align-items:center;gap:7px;padding:0 13px;border-radius:8px;border:1px solid var(--line);background:var(--surface);font-weight:500;font-size:13px;white-space:nowrap}
.btn:hover{background:var(--hover)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.primary:hover{filter:brightness(1.07)}
.btn.ghost{border-color:transparent;background:transparent}
.btn:disabled{opacity:.5;cursor:default}
.iconbtn{width:34px;height:34px;display:grid;place-items:center;border:0;background:transparent;border-radius:8px;color:var(--fg2)}
.iconbtn:hover{background:var(--hover)}
.iconbtn:disabled{opacity:.35;cursor:default;background:transparent}

/* menus */
.menu{position:absolute;z-index:40;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;min-width:260px;max-width:min(360px,calc(100vw - 32px))}
.menu .mi{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;border-radius:8px;padding:9px 10px;text-align:left;font-size:13px}
.menu .mi:hover,.menu .mi.cur{background:var(--hover)}
.menu .mi .sub{margin-left:auto;font-size:11px;color:var(--muted);white-space:nowrap}
.menu .mi .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu .hd{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding:8px 10px 4px}
.menu hr{border:0;border-top:1px solid var(--line);margin:5px 4px}
.menu .list{max-height:300px;overflow:auto}

/* canvas */
#viewport{position:relative;flex:1;overflow:hidden;touch-action:none;cursor:default;
  background-color:var(--bg);background-image:radial-gradient(var(--dot) 1.1px,transparent 1.3px)}
#viewport.panning{cursor:grabbing}
#world{position:absolute;left:0;top:0;transform-origin:0 0}
#edges{position:absolute;left:0;top:0;width:1px;height:1px;overflow:visible;pointer-events:none}
#edges path{fill:none;stroke-linecap:round}
#nodes,#peers{position:absolute;left:0;top:0}
#peers{pointer-events:none}

.node{position:absolute;left:0;top:0;box-sizing:border-box;width:max-content;max-width:250px;cursor:pointer;user-select:none;-webkit-user-select:none;
  font-size:13.5px;line-height:1.35;color:var(--fg);white-space:pre-wrap;overflow-wrap:anywhere;will-change:transform}
.node .txt{display:block;outline:none;min-width:1ch}
.node .txt:empty::before{content:"Новая идея";color:var(--muted);font-weight:400}
.node.lv0{max-width:300px;background:var(--root-bg);color:var(--root-fg);border-radius:999px;padding:16px 28px;font-size:19px;font-weight:600;text-align:center;box-shadow:var(--shadow)}
.node.lv0 .txt:empty::before{content:"Тема штурма";color:inherit;opacity:.55}
.node.lv1{background:var(--c);color:#fff;border-radius:12px;padding:10px 16px;font-size:15px;font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.node.lv1 .txt:empty::before{color:rgba(255,255,255,.7)}
.node.lv2{background:color-mix(in srgb,var(--c) var(--tint),var(--surface));border:1.5px solid color-mix(in srgb,var(--c) 38%,transparent);border-radius:10px;padding:6px 11px;font-size:14px;font-weight:500}
.node.lv3{padding:2px 3px 4px;border-bottom:2px solid color-mix(in srgb,var(--c),#fff var(--edge-lift));border-radius:0;font-size:13.5px;max-width:220px}
.node.sel{outline:2px solid var(--accent);outline-offset:3px}
.node.lv3.sel{outline-offset:2px;border-radius:3px}
.node.draft{opacity:.78}
.node.draft.lv1{background:color-mix(in srgb,var(--c) 70%,var(--surface));outline:1.5px dashed var(--c);outline-offset:3px}
.node.draft.lv2{border-style:dashed;border-width:2px;border-color:color-mix(in srgb,var(--c) 55%,transparent)}
.node.draft.lv3{border-bottom-color:transparent;background:linear-gradient(90deg,var(--c) 0 3px,transparent 3px 11px) left bottom/11px 2px repeat-x}
.node.draft.sel{outline:2px solid var(--accent)}
.node.editing{cursor:text;user-select:text;-webkit-user-select:text}
.node.dragging{opacity:.35}
.node.drop{outline:2px dashed var(--accent);outline-offset:5px}
.node.enter{animation:grow .26s cubic-bezier(.2,.9,.3,1.2)}
@keyframes grow{from{opacity:0;scale:.6}to{opacity:1;scale:1}}
.fold{position:absolute;top:50%;margin-top:-10px;width:20px;height:20px;border-radius:50%;border:1.5px solid var(--c,var(--line2));background:var(--surface);color:var(--fg2);font-size:10px;font-weight:600;padding:0;display:none;align-items:center;justify-content:center;line-height:1}
.node.R .fold{right:-26px}.node.L .fold{left:-26px}
.node.lv3 .fold{top:auto;bottom:-11px;margin-top:0}
.fold{font-weight:700;font-size:12px}
.node.haskids:hover .fold,.node.haskids.sel .fold,.node.collapsed .fold{display:flex}
.node.collapsed .fold{background:var(--c,var(--fg2));border-color:var(--c,var(--fg2));color:#fff;width:auto;min-width:20px;padding:0 5px;border-radius:10px}
.node.lv0 .fold{display:none!important}

.drag-ghost{position:absolute;pointer-events:none;opacity:.85;z-index:5}
.peer-sel{position:absolute;border:2px solid var(--pc);border-radius:12px;pointer-events:none}
.peer-sel span,.cursor span{position:absolute;left:-2px;top:-20px;background:var(--pc);color:#fff;font-size:11px;font-weight:500;padding:2px 6px;border-radius:5px;white-space:nowrap}
.cursor{position:absolute;left:0;top:0;transform-origin:0 0;transition:transform .08s linear}
.cursor svg{display:block}
.cursor span{left:14px;top:16px}

/* node toolbar */
.nodebar{position:absolute;z-index:15;display:flex;align-items:center;gap:2px;padding:4px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);transform:translate(-50%,calc(-100% - 12px));white-space:nowrap}
.nodebar.below{transform:translate(-50%,12px)}
.nodebar .sw{width:24px;height:24px;border:0;background:transparent;border-radius:6px;display:grid;place-items:center;padding:0}
.nodebar .sw i{width:14px;height:14px;border-radius:50%;background:var(--c)}
.nodebar .sw.on i{box-shadow:0 0 0 2px var(--surface),0 0 0 3.5px var(--c)}
.nodebar .sw:hover{background:var(--hover)}
.nodebar .sep{width:1px;height:20px;background:var(--line);margin:0 4px}
.nodebar .iconbtn{width:30px;height:30px}
.nodebar .who{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);padding:0 6px 0 4px}
.nodebar .who img{width:18px;height:18px;border-radius:50%}
.nodebar .btn{height:30px;padding:0 10px}

/* dock + zoom */
.dock{position:absolute;left:50%;bottom:calc(18px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:15;display:flex;align-items:center;gap:4px;padding:6px;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.dock .btn{border-color:transparent;background:transparent}
.dock .btn:hover{background:var(--hover)}
.dock .btn.ai{background:var(--accent-weak);color:var(--accent-ink);border-color:transparent}
.dock .btn.ai:hover{filter:brightness(.97)}
.dock .sep{width:1px;height:22px;background:var(--line);margin:0 4px}
kbd{font-family:var(--font);font-size:11px;color:var(--muted);border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:0 5px;background:var(--surface)}
.zoom{position:absolute;right:16px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:15;display:flex;align-items:center;gap:2px;padding:4px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.zoom .pct{min-width:48px;text-align:center;font-size:12px;color:var(--fg2);font-variant-numeric:tabular-nums;border:0;background:transparent;border-radius:6px;height:30px}
.zoom .pct:hover{background:var(--hover)}
.zoom .iconbtn{width:30px;height:30px}
.helpbtn{position:absolute;left:16px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:15}
.helpbtn .iconbtn{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;width:40px;height:40px}
.helpcard{position:absolute;left:16px;bottom:calc(68px + env(safe-area-inset-bottom,0px));z-index:30;width:300px;max-width:calc(100vw - 32px);background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:14px 16px}
.helpcard h3{margin:0 0 8px;font-size:13px}
.helpcard dl{display:grid;grid-template-columns:1fr auto;gap:6px 12px;margin:0;font-size:12.5px}
.helpcard dt{color:var(--fg2)} .helpcard dd{margin:0;text-align:right}

/* draft bar */
.draftbar{position:absolute;top:calc(68px + env(safe-area-inset-top,0px));left:50%;transform:translateX(-50%);z-index:16;display:flex;align-items:center;gap:8px;padding:6px 6px 6px 14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);font-size:13px;max-width:calc(100vw - 32px);flex-wrap:wrap}
.draftbar .spark{color:var(--accent)}
.draftbar b{font-weight:600}

/* modal */
.scrim{position:fixed;inset:0;z-index:50;background:rgba(18,20,25,.38);display:grid;place-items:center;padding:16px}
.modal{width:min(480px,100%);background:var(--surface);border-radius:16px;box-shadow:var(--shadow);padding:22px;display:flex;flex-direction:column;gap:16px;border:1px solid var(--line)}
.modal h2{margin:0;font-size:18px;font-weight:600;text-wrap:balance}
.modal p{margin:0;color:var(--muted);font-size:13px;line-height:1.5}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12px;font-weight:500;color:var(--fg2)}
.field textarea,.field select{font:inherit;color:var(--fg);background:var(--surface);border:1px solid var(--line2);border-radius:8px;padding:9px 11px}
.field textarea{resize:vertical;min-height:70px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row .field{flex:1;min-width:140px}
.actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.err{color:var(--danger);font-size:12.5px}
.spin{width:14px;height:14px;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:rot .8s linear infinite;display:inline-block}
@keyframes rot{to{transform:rotate(360deg)}}

.choice{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;cursor:pointer}
.choice:has(input:checked){border-color:var(--accent);background:var(--accent-weak)}
.choice input{margin:3px 0 0;accent-color:var(--accent)}
.choice b{display:block;font-weight:600;font-size:14px;margin-bottom:2px}
.choice span{font-size:12.5px;color:var(--muted);line-height:1.45}
.field input[type=text],.field input[type=password]{font:inherit;color:var(--fg);background:var(--surface);border:1px solid var(--line2);border-radius:8px;padding:9px 11px;min-width:0}
.copyrow{display:flex;gap:8px}
.copyrow input{flex:1;font-variant-numeric:tabular-nums}
.note{font-size:12px;color:var(--muted);background:var(--surface2);border-radius:8px;padding:9px 11px;line-height:1.45}
.steps{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.lockbadge{display:inline-flex;align-items:center;gap:4px}
.loading{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);font-size:13px;z-index:4;pointer-events:none}
.toast{position:absolute;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:60;background:var(--fg);color:var(--bg);padding:9px 14px;border-radius:10px;font-size:13px;box-shadow:var(--shadow);max-width:calc(100vw - 32px)}

@media (max-width:720px){
  .top{gap:8px;padding:0 10px}
  .logo .word{display:none}
  .mapbtn .t{max-width:40vw}
  .mapbtn .s,.livechip span,.hide-sm,.lbl-sm{display:none}
  #shareBtn{padding:0 10px}
  .dock .btn .lbl,.dock kbd{display:none}
  .zoom .pct{display:none}
  .zoom{right:12px;bottom:calc(76px + env(safe-area-inset-bottom,0px))}.helpbtn{left:12px}
}
@media (prefers-reduced-motion:reduce){.node.enter{animation:none}.cursor{transition:none}.spin{animation-duration:2s}}

/* server build additions */
.people .av{display:grid;place-items:center;color:#fff;font-size:11px;font-weight:600;letter-spacing:.02em}
.people .av.me{outline:2px solid var(--accent);outline-offset:-2px}
.mi.danger{color:var(--danger)}
.center-msg{position:absolute;inset:0;display:grid;place-items:center;padding:24px;z-index:6}
.center-msg .card{max-width:420px;text-align:center;display:flex;flex-direction:column;gap:12px;align-items:center}
.center-msg h2{margin:0;font-size:20px;text-wrap:balance}
.center-msg p{margin:0;color:var(--muted);line-height:1.5}
details.owner{font-size:12.5px;color:var(--muted)}
details.owner summary{cursor:pointer;color:var(--fg2)}
details.owner .copyrow{margin-top:8px}
.warn{font-size:12px;color:var(--danger)}