:root{
  --ink:#1C2A2F; --muted:#5A6A6F; --panel:#F7F9F8; --panel-2:#ECF1EF; --line:#D2DAD7;
  --accent:#0B6E79; --accent-soft:#D6ECEE; --accent-ink:#FFFFFF; --danger:#B3261E;
  --land:#E6EAE2; --water:#A7CEDB; --green:#C8DBBB; --pier:#DCE0D9;
  --road:#FFFFFF; --casing:#BCC4BF; --mw:#F2D27C; --mw-casing:#C49A3B;
  --halo:#FFFFFF; --label:#44545A; --dot-gray:#8A9396; --dot-black:#1C2A2F;
  --shadow:0 8px 28px rgba(18,42,48,.18); --radius:10px;
  --font:"Overpass","Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ink:#E3ECEA; --muted:#9AABAF; --panel:#1A2326; --panel-2:#223035; --line:#33454A;
    --accent:#4FB7C2; --accent-soft:#16383D; --accent-ink:#0B1A1D; --danger:#F2867E;
    --land:#1D2528; --water:#1D4150; --green:#23382A; --pier:#283236;
    --road:#3B474B; --casing:#12191B; --mw:#7A6630; --mw-casing:#2A2412;
    --halo:#1D2528; --label:#B8C6C9; --dot-gray:#8E9A9D; --dot-black:#0B1214;
    --shadow:0 8px 28px rgba(0,0,0,.45); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --ink:#E3ECEA; --muted:#9AABAF; --panel:#1A2326; --panel-2:#223035; --line:#33454A;
  --accent:#4FB7C2; --accent-soft:#16383D; --accent-ink:#0B1A1D; --danger:#F2867E;
  --land:#1D2528; --water:#1D4150; --green:#23382A; --pier:#283236;
  --road:#3B474B; --casing:#12191B; --mw:#7A6630; --mw-casing:#2A2412;
  --halo:#1D2528; --label:#B8C6C9; --dot-gray:#8E9A9D; --dot-black:#0B1214;
  --shadow:0 8px 28px rgba(0,0,0,.45); color-scheme:dark;
}
:root{box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:inherit}
html,body{height:100%;margin:0}
body{background:var(--land);color:var(--ink);font-family:var(--font);font-size:14px;line-height:1.45;overflow:hidden}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
: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)}
[hidden]{display:none!important}

/* ---------- layout ---------- */
#app{height:100%;display:grid;grid-template-rows:auto 1fr}
#top{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--line);z-index:20;min-height:54px}
#main{position:relative;display:grid;grid-template-columns:290px 1fr;min-height:0}
#main.guest{grid-template-columns:1fr}
#side{background:var(--panel);border-right:1px solid var(--line);overflow:auto;min-height:0;display:flex;flex-direction:column}
#stage{position:relative;min-width:0;min-height:0;overflow:hidden}
#map{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;background:var(--land);user-select:none;-webkit-user-select:none}

.brand{display:flex;align-items:center;gap:8px;font-weight:800;letter-spacing:-.01em;font-size:17px;white-space:nowrap}
.brand svg{flex:none}
.mapbtn{display:flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--panel-2);border-radius:8px;padding:6px 10px;max-width:260px;font-weight:600}
.mapbtn span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tools{display:flex;gap:2px;background:var(--panel-2);border:1px solid var(--line);border-radius:9px;padding:3px;margin-left:auto;overflow-x:auto;max-width:100%}
.tool{display:flex;align-items:center;gap:6px;border:0;background:transparent;border-radius:6px;padding:6px 10px;white-space:nowrap;color:var(--muted);font-weight:600}
.tool[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.tool kbd{font:inherit;font-size:11px;opacity:.7}
.acct{margin-left:8px}
.iconbtn{border:1px solid var(--line);background:var(--panel-2);border-radius:8px;padding:6px 9px;display:inline-flex;align-items:center;gap:6px}
.menu-toggle{display:none}

/* ---------- side ---------- */
.sec{padding:14px 14px 10px;border-bottom:1px solid var(--line)}
.sec h2{font-size:15px;margin:0;font-weight:800;display:flex;align-items:center;gap:8px}
.sec h2 .count{font-weight:600;color:var(--muted);font-size:13px}
.sec h2 button{margin-left:auto}
.list{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.row{display:flex;align-items:center;gap:8px;padding:6px 6px;border-radius:7px;cursor:pointer}
.row:hover{background:var(--panel-2)}
.row.on{background:var(--accent-soft)}
.row .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .meta{color:var(--muted);font-size:12px}
.stroke{width:26px;height:8px;border-radius:4px;flex:none}
.row .eye{border:0;background:none;padding:2px;color:var(--muted);display:flex}
.row.off .nm,.row.off .stroke{opacity:.4}
.empty{color:var(--muted);font-size:13px;margin:10px 0 2px}
.btn{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:7px 12px;font-weight:600}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.danger{color:var(--danger)}
.btn.small{padding:4px 9px;font-size:13px}
.btn:disabled{opacity:.5;cursor:default}
.side-foot{margin-top:auto;padding:12px 14px;color:var(--muted);font-size:12px}

/* ---------- floating on stage ---------- */
#hint{position:absolute;top:12px;left:50%;transform:translateX(-50%);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:999px;padding:6px 8px 6px 14px;display:flex;align-items:center;gap:10px;z-index:5;max-width:calc(100% - 24px);font-size:13px}
#hint .txt{color:var(--muted)}
.switch{display:inline-flex;align-items:center;gap:6px;font-weight:600;cursor:pointer;white-space:nowrap}
.switch input{appearance:none;width:30px;height:18px;border-radius:9px;background:var(--line);position:relative;margin:0;cursor:pointer;transition:background .15s}
.switch input::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;transition:left .15s}
.switch input:checked{background:var(--accent)}
.switch input:checked::after{left:14px}
#zoom{position:absolute;right:12px;bottom:14px;display:flex;flex-direction:column;gap:6px;z-index:5}
#zoom button{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center}
#scale{position:absolute;left:12px;bottom:14px;z-index:5;font-size:11px;color:var(--muted);font-weight:600}
#scale .bar{height:6px;border:2px solid var(--muted);border-top:0;margin-bottom:2px}
#north{position:absolute;left:12px;top:12px;z-index:5;width:28px;height:28px;color:var(--muted)}

/* inspector */
#insp{position:absolute;top:12px;right:12px;width:310px;max-height:calc(100% - 24px);overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);z-index:6;padding:14px}
#insp h3{margin:0 0 4px;font-size:12px;color:var(--muted);font-weight:700}
.field{margin:12px 0}
.field > label,.lbl{display:block;font-size:12px;font-weight:700;color:var(--muted);margin-bottom:5px}
.txtin{width:100%;border:1px solid var(--line);background:var(--panel-2);border-radius:7px;padding:7px 9px}
.txtin.big{font-size:16px;font-weight:700}
.swatches{display:grid;grid-template-columns:repeat(10,1fr);gap:5px}
.sw{aspect-ratio:1;border-radius:50%;border:2px solid transparent;padding:0;min-width:0}
.sw[aria-checked="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 2px var(--panel)}
.btnrow{display:flex;flex-wrap:wrap;gap:6px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:7px;overflow:hidden}
.seg button{border:0;background:var(--panel-2);padding:3px 8px;font-size:12px;font-weight:600;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--panel)}
.sub{border-top:1px solid var(--line);margin-top:14px;padding-top:10px}
.sub .lbl{display:flex;align-items:center}
.item{display:flex;align-items:center;gap:6px;margin:6px 0}
.item .txtin{padding:5px 7px}
.item.focus .txtin{border-color:var(--accent)}
.x{border:0;background:none;color:var(--muted);font-size:16px;padding:2px 6px;border-radius:6px}
.x:hover{color:var(--danger)}
.dotchip{width:12px;height:12px;border-radius:50%;flex:none;box-shadow:0 0 0 2px var(--panel),0 0 0 3px var(--line)}
.tagchip{font-size:11px;font-weight:800;border-radius:3px;padding:0 5px;flex:none;min-width:22px;text-align:center}
input[type=range]{width:100%;accent-color:var(--accent)}
.symgrid{display:flex;flex-wrap:wrap;gap:5px}
.symgrid button{width:34px;height:34px;border-radius:8px;border:1px solid var(--line);background:var(--panel-2);font-size:16px}
.symgrid button[aria-pressed="true"]{background:var(--ink);color:var(--panel)}
.note{font-size:12px;color:var(--muted);margin:6px 0 0}

/* dropdown */
.pop{position:absolute;z-index:40;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px;min-width:300px;max-width:calc(100vw - 20px);max-height:70vh;overflow:auto}
.pop h4{margin:6px 8px 4px;font-size:12px;color:var(--muted)}
.pop .row .acts{display:flex;gap:2px;opacity:.75}
.pop .row .acts button{border:0;background:none;padding:3px 6px;border-radius:5px;font-size:12px;font-weight:600;color:var(--muted)}
.pop .row .acts button:hover{background:var(--panel);color:var(--ink)}
.pop .sep{height:1px;background:var(--line);margin:6px 0}
.pop .act{display:block;width:100%;text-align:left;border:0;background:none;padding:8px 10px;border-radius:7px;font-weight:600}
.pop .act:hover{background:var(--panel-2)}

/* modal */
#modal{position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;background:rgba(15,30,34,.42);padding:16px}
#modal .card{background:var(--panel);border-radius:14px;box-shadow:var(--shadow);width:min(460px,100%);max-height:90vh;overflow:auto;padding:22px}
#modal h2{margin:0 0 6px;font-size:19px}
#modal .foot{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}
.err{color:var(--danger);font-size:13px;min-height:1.2em;margin-top:8px}
.radio{display:flex;gap:8px;align-items:flex-start;margin:10px 0;cursor:pointer}
.radio input{margin-top:3px;accent-color:var(--accent)}

/* login */
#login{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:18px;background:radial-gradient(ellipse at center,rgba(230,234,226,.7) 0,rgba(230,234,226,.25) 60%)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) #login{background:linear-gradient(180deg,rgba(29,37,40,.4),rgba(29,37,40,.8))}}
:root[data-theme="dark"] #login{background:linear-gradient(180deg,rgba(29,37,40,.4),rgba(29,37,40,.8))}
#login .card{width:min(380px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:26px 24px 22px}
#login h1{font-size:28px;font-weight:800;letter-spacing:-.02em;margin:10px 0 2px;line-height:1.1}
#login p.lead{margin:0 0 18px;color:var(--muted)}
#login .field{margin:10px 0}
#login .btn{width:100%;padding:10px;margin-top:6px}
#login .fine{font-size:12px;color:var(--muted);margin:14px 0 0}
.routeline{display:block;height:6px;border-radius:3px;background:linear-gradient(90deg,#D7263D 0 25%,#F6AE2D 25% 50%,#2E9E44 50% 75%,#1F5FBF 75%)}

#toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:var(--ink);color:var(--panel);padding:9px 16px;border-radius:9px;font-weight:600;font-size:13px;z-index:70;box-shadow:var(--shadow);max-width:calc(100vw - 30px)}

/* map svg classes */
.w-water{fill:var(--water)}
.w-waterline{fill:none;stroke:var(--water);stroke-linecap:round;stroke-linejoin:round}
.w-green{fill:var(--green)}
.w-land{fill:var(--pier)}
.rc{fill:none;stroke:var(--casing);stroke-linecap:round;stroke-linejoin:round}
.rf{fill:none;stroke:var(--road);stroke-linecap:round;stroke-linejoin:round}
.rc.motorway{stroke:var(--mw-casing)} .rf.motorway{stroke:var(--mw)}
.rf.pedestrian{stroke-dasharray:none;opacity:.8}
.phit{fill:none;stroke:transparent;stroke-linecap:round;stroke-linejoin:round;cursor:pointer}
.pline{fill:none;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}
.phalo{fill:none;stroke:var(--halo);stroke-linecap:round;stroke-linejoin:round;pointer-events:none}
.pselring{fill:none;stroke:var(--accent);stroke-linecap:round;stroke-linejoin:round;pointer-events:none;opacity:.35}
.mk text{paint-order:stroke;stroke:var(--halo);stroke-width:3.5px;stroke-linejoin:round;font-family:var(--font)}
.mk{cursor:pointer}
.draft{fill:none;stroke-dasharray:6 5;stroke-linecap:round;pointer-events:none;opacity:.85}

@media (max-width: 860px){
  .tool .t{display:none}
  .tool kbd{display:none}
}
@media (max-width: 760px){
  #main{grid-template-columns:1fr}
  #side{position:absolute;inset:0 auto 0 0;width:min(300px,86vw);z-index:15;box-shadow:var(--shadow);transform:translateX(-102%);transition:transform .2s}
  #side.open{transform:none}
  .menu-toggle{display:inline-flex}
  .brand .word{display:none}
  #acctName{display:none}
  .acct{margin-left:auto}
  .mapbtn{max-width:52vw}
  #top{flex-wrap:wrap}
  .tools{order:5;margin-left:0;width:100%;justify-content:space-between}
  #insp{top:auto;bottom:0;left:0;right:0;width:auto;max-height:48%;border-radius:14px 14px 0 0}
  #hint{top:8px;font-size:12px}
  #hint .txt{display:none}
}
@media (prefers-reduced-motion: reduce){*{transition:none!important}}

/* save status */
#saveState{border:0;background:none;font-size:12px;font-weight:700;color:var(--muted);padding:4px 8px;border-radius:6px;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;cursor:default}
#saveState::before{content:"";width:8px;height:8px;border-radius:50%;background:#2E9E44}
#saveState[data-state="pending"]::before{background:#F6AE2D}
#saveState[data-state="saving"]::before{background:#F6AE2D;animation:pulse 1s infinite alternate}
#saveState[data-state="error"]{color:var(--danger);cursor:pointer}
#saveState[data-state="error"]::before{background:var(--danger)}
@keyframes pulse{to{opacity:.3}}
#login .check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin:8px 0 2px;cursor:pointer}
#login .check input{accent-color:var(--accent)}
#login .help{font-size:12px;color:var(--muted);margin:4px 0 0}
#login .help a{color:var(--accent)}
@media (max-width: 760px){ #saveState{font-size:0;padding:4px} #saveState::before{width:10px;height:10px} }