:root{
  --bg-0:#0c1030;
  --bg-1:#161d4a;
  --panel:rgba(20,26,64,.72);
  --panel-solid:#141a40;
  --border:rgba(140,160,255,.18);
  --text:#eaf0ff;
  --muted:#9aa6d6;
  --accent:#2ee6d6;
  --accent-2:#7c5cff;
  --gold:#ffd34d;
  --green:#3ddc84;
  --red:#ff5d73;
  --radius:14px;
  --shadow:0 10px 40px rgba(0,0,0,.45);
  font-synthesis:none;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Segoe UI",system-ui,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(124,92,255,.35), transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(46,230,214,.25), transparent 55%),
    linear-gradient(160deg,var(--bg-0),var(--bg-1));
  overflow:hidden;
}

/* ---- App shell: full-viewport, sidebar + map -------------------------- */
#app{
  display:flex;
  height:100vh;
  height:100dvh;
  gap:14px;
  padding:14px;
}

#lists-panel{
  width:300px;
  flex:0 0 300px;
  display:flex;
  flex-direction:column;
  background:var(--panel);
  backdrop-filter:blur(10px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.panel-head{padding:14px 14px 10px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:8px}
.panel-head h2{margin:0;font-size:14px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
#list-search{
  width:100%;padding:9px 12px;border-radius:10px;border:1px solid var(--border);
  background:rgba(0,0,0,.25);color:var(--text);font-size:14px;outline:none;
}
#list-search:focus{border-color:var(--accent)}
.close-btn{
  width:24px;height:24px;padding:0;border:none;background:rgba(255,255,255,.1);
  border-radius:6px;color:var(--text);font-size:16px;cursor:pointer;
  transition:background .15s ease;flex-shrink:0;
}
.close-btn:hover{background:rgba(255,255,255,.2)}
#lists{flex:1;overflow:auto;padding:12px}
#lists::-webkit-scrollbar{width:9px}
#lists::-webkit-scrollbar-thumb{background:rgba(140,160,255,.3);border-radius:8px}

.source{margin-bottom:16px}
.source-title{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  margin:0 0 8px;
}
.source-count{
  background:rgba(124,92,255,.25);color:#cdbfff;border-radius:20px;
  padding:1px 9px;font-size:11px;font-weight:700;
}
.items{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:7px}

.item{
  padding:7px 11px;border-radius:10px;cursor:grab;font-size:13px;font-weight:600;
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.04));
  border:1px solid var(--border);
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
  user-select:none;
}
.item:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.35);background:rgba(46,230,214,.18);border-color:var(--accent)}
.item:active{cursor:grabbing}
.item.dragging{opacity:.45}
.item-island{
  background:linear-gradient(180deg,rgba(255,211,77,.22),rgba(255,211,77,.08));
  border-color:rgba(255,211,77,.45);color:#ffe9a8;
}
.item.placed{
  opacity:.4;text-decoration:line-through;cursor:default;pointer-events:none;
  background:rgba(61,220,132,.12);border-color:rgba(61,220,132,.3);color:var(--green);
}
.item.filtered-out{display:none}

/* ---- Map area --------------------------------------------------------- */
#map-area{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}

#topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:10px 16px;box-shadow:var(--shadow);
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{font-size:28px}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-text strong{font-size:17px;letter-spacing:.02em}
.brand-text small{color:var(--muted);font-size:12px}

.mobile-only{display:none}

@media (max-width:880px){
  #app{flex-direction:column;padding:8px;gap:8px}
  #lists-panel{
    position:fixed;z-index:60;inset:8px auto 8px 8px;width:78vw;max-width:320px;
    transform:translateX(calc(-100% - 16px));transition:transform .25s ease;
    box-shadow:var(--shadow),0 0 0 9999px rgba(0,0,0,0);
  }
  #lists-panel.open{
    transform:none;
    box-shadow:var(--shadow),0 0 0 9999px rgba(0,0,0,.35);
  }
  .items{flex-direction:row}
  .mobile-only{display:inline-flex}
  .brand-text small{display:none}
}