:root{
  --bg:#0b0d16;
  --panel:#151a2b;
  --panel2:#1c223a;
  --border:#2c3455;
  --gold:#e8c565;
  --text:#e8ebf5;
  --dim:#7a83a8;
  --green:#4ade80;
  --yellow:#facc15;
  --red:#3a4166;
  --danger:#ff3b3b;
}
*{box-sizing:border-box;}
html,body{
  margin:0;padding:0;width:100%;height:100%;
  background:var(--bg);color:var(--text);
  font-family:"Yu Gothic","Hiragino Sans",sans-serif;
  overflow:hidden;
  user-select:none;
}
#app{display:flex;width:100%;height:100%;}

/* ===== Sidebar ===== */
#sidebar{
  width:340px;min-width:340px;
  background:var(--panel);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:6px 8px;
  overflow-y:auto;
  gap:3px;
}
#sidebar h1{font-size:14.5px;margin:0;color:var(--gold);letter-spacing:1px;line-height:1.2;}
#sidebar .sub{font-size:9.5px;color:var(--dim);margin-bottom:0;line-height:1.3;}
.statbox{background:var(--panel2);border:1px solid var(--border);border-radius:7px;padding:5px 8px;}
.statrow{display:flex;justify-content:space-between;font-size:11px;padding:0;line-height:1.5;}
.statrow .label{color:var(--dim);}
.statrow .val{font-weight:bold;color:var(--text);}
.statrow .val.sp{color:var(--gold);}
.progressbar{width:100%;height:5px;border-radius:4px;background:#0b0d16;overflow:hidden;margin-top:3px;border:1px solid var(--border);}
.progressbar > div{height:100%;background:linear-gradient(90deg,var(--gold),#fff2b8);}

#feverBanner{
  background:linear-gradient(90deg,#ff5b3b,#ff9f43);
  color:#2a0f00;font-weight:bold;text-align:center;
  padding:5px;border-radius:7px;font-size:11px;
  animation:feverGlow 0.6s infinite alternate;
}
#feverBanner.hidden{display:none;}
@keyframes feverGlow{ from{box-shadow:0 0 6px rgba(255,120,60,.6);} to{box-shadow:0 0 18px rgba(255,120,60,1);} }

#clickBtn{
  width:100%;padding:8px;
  font-size:13px;font-weight:bold;
  background:linear-gradient(180deg,#3d4a86,#2a3364);
  color:#fff;border:1px solid #5a68b0;border-radius:9px;
  cursor:pointer;transition:transform .05s;
}
#clickBtn:active{transform:scale(0.96);}
#clickBtn small{display:block;font-weight:normal;color:#c8cdf0;margin-top:1px;font-size:9.5px;}

#buyAllBtn{
  width:100%;padding:5px;margin-top:3px;
  font-size:11px;font-weight:bold;
  background:linear-gradient(180deg,#4a2323,#2c1414);
  color:#ffb3b3;border:1px solid var(--danger);border-radius:8px;
  cursor:pointer;
}
#buyAllBtn:hover{box-shadow:0 0 10px rgba(255,59,59,.5);}
#buyAllBtn:active{transform:scale(0.97);}

/* ===== Buildings ===== */
.buildingsBox{background:var(--panel2);border:1px solid var(--border);border-radius:7px;padding:6px 6px 2px;}
.buildingsBox h4{margin:0 0 4px 0;font-size:10px;color:var(--dim);font-weight:normal;}
#buildingsInner{max-height:68px;overflow-y:auto;padding-right:3px;}
.buildingRow{
  display:flex;align-items:center;gap:6px;
  border:1px solid var(--border);border-radius:7px;
  padding:4px 6px;margin-bottom:4px;background:#161b30;
  transition:border-color .15s, box-shadow .15s;
}
.buildingRow.locked{opacity:.5;}
.buildingRow.buyable{border-color:var(--danger);box-shadow:0 0 8px rgba(255,59,59,.5);}
.bIcon{font-size:17px;width:22px;text-align:center;flex:none;}
.bInfo{flex:1;min-width:0;}
.bName{font-size:11px;font-weight:bold;color:var(--text);}
.bName .bOwned{color:var(--gold);font-weight:normal;}
.bProd{font-size:9.5px;color:var(--dim);}
.bLockMsg{font-size:9px;color:#ff8a8a;}
.bBuy{display:flex;gap:3px;flex:none;}
.bBuyBtn{
  background:var(--panel);border:1px solid var(--border);color:var(--text);
  border-radius:6px;padding:3px 5px;font-size:9.5px;cursor:pointer;line-height:1.3;min-width:44px;
}
.bBuyBtn:disabled{opacity:.4;cursor:not-allowed;}
.bBuyBtn span{display:block;color:var(--gold);font-size:9.5px;}

#detailPanel{background:var(--panel2);border:1px solid var(--border);border-radius:7px;padding:6px 8px;min-height:50px;max-height:150px;overflow-y:auto;}
#detailPanel h3{margin:0 0 4px 0;font-size:13px;color:var(--gold);}
#detailPanel .row{font-size:11.5px;margin:2px 0;color:var(--dim);}
#detailPanel .row b{color:var(--text);}
#detailPanel .flavor{
  font-size:10.5px;color:#a9b0d6;font-style:italic;
  margin-top:5px;padding-top:5px;border-top:1px dashed var(--border);line-height:1.5;
}
#detailPanel .status{display:inline-block;margin-top:5px;padding:2px 7px;border-radius:12px;font-size:10px;font-weight:bold;}
#unlockBtn{width:100%;margin-top:6px;padding:8px;border-radius:7px;border:none;font-weight:bold;cursor:pointer;background:var(--red);color:#8a92c0;font-size:12px;}
#unlockBtn.ready{background:linear-gradient(180deg,var(--danger),#c22323);color:#fff;cursor:pointer;box-shadow:0 0 10px rgba(255,59,59,.6);}
#unlockBtn:disabled{cursor:not-allowed;}

.branchList{background:var(--panel2);border:1px solid var(--border);border-radius:7px;padding:6px 7px;}
.branchList h4{margin:0 0 4px 0;font-size:10px;color:var(--dim);font-weight:normal;}
.branchScroll{max-height:60px;overflow-y:auto;padding-right:3px;}
.branchItem{display:flex;align-items:center;gap:6px;font-size:11px;padding:3px 4px;border-radius:6px;cursor:pointer;}
.branchItem:hover{background:#232b4a;}
.branchDot{width:9px;height:9px;border-radius:50%;flex:none;}
.branchItem .bname{flex:1;color:var(--text);}
.branchItem .bpct{color:var(--dim);font-size:10px;}
.branchItem.secretBranch .bname{color:var(--gold);}

.btnRow{display:flex;gap:5px;}
.btnRow.bottom{margin-top:auto;}
.smallBtn{flex:1;padding:5px;border-radius:7px;border:1px solid var(--border);background:var(--panel2);color:var(--dim);font-size:10px;cursor:pointer;}
.smallBtn:hover{color:var(--text);border-color:var(--gold);}
.smallBtn.accent{color:var(--gold);border-color:#5c4d1e;}

.shortcutRow{display:flex;justify-content:flex-end;}
.shortcutIcon{
  font-size:10px;color:var(--dim);cursor:help;
  padding:2px 8px;border:1px dashed var(--border);border-radius:12px;
}
.shortcutIcon:hover{color:var(--gold);border-color:var(--gold);}

#prestigeBox{background:linear-gradient(180deg,#2a1f45,#1c1533);border:1px solid #5b3fa0;border-radius:7px;padding:6px 8px;}
#prestigeBox h4{margin:0 0 2px 0;color:#c9a8ff;font-size:11px;}
#prestigeBox p{margin:0 0 4px 0;font-size:9px;color:var(--dim);line-height:1.3;}
#prestigeBtn{width:100%;padding:6px;border-radius:7px;border:none;font-weight:bold;background:#3a2a63;color:#7a6aa0;cursor:not-allowed;font-size:11px;}
#prestigeBtn.ready{background:linear-gradient(180deg,#a678ff,#7a4fd8);color:#fff;cursor:pointer;box-shadow:0 0 10px rgba(166,120,255,.6);}

/* ===== Viewport ===== */
#viewportWrap{
  position:relative;flex:1;overflow:hidden;
  background:radial-gradient(circle at 50% 50%, #171d33 0%, #0b0d16 70%);
  cursor:grab;
}
#viewportWrap.dragging{cursor:grabbing;}
#world{position:absolute;left:0;top:0;transform-origin:0 0;}
svg#lines{position:absolute;left:0;top:0;overflow:visible;pointer-events:none;}
.node{
  position:absolute;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:bold;cursor:pointer;
  transform:translate(-50%,-50%);
  border:2px solid var(--border);background:#1a2038;color:var(--dim);
  transition:box-shadow .15s, border-color .15s;
  white-space:nowrap;
}
.node.root{
  width:64px;height:64px;font-size:12px;
  background:radial-gradient(circle,#3a2f00,#20180a);
  border:2px solid var(--gold);color:var(--gold);
  box-shadow:0 0 25px rgba(232,197,101,.5);
}
.node.locked{opacity:.45;}
.node.available{border-color:var(--yellow);box-shadow:0 0 10px rgba(250,204,21,.5);animation:pulse 1.4s infinite;color:var(--yellow);}
.node.unlocked{border-color:var(--green);background:radial-gradient(circle,#123322,#0e1a16);color:var(--green);box-shadow:0 0 8px rgba(74,222,128,.35);}
.node.multi{border-style:double;}
.node.milestone{font-size:11px;}
.node.secretNode{border-style:dashed;}
.node.secretNode.unlocked{box-shadow:0 0 16px rgba(255,215,0,.7);}
.node.selected{outline:3px solid #fff;outline-offset:2px;}
.node.available.buyable{
  border-color:var(--danger) !important;
  box-shadow:0 0 16px rgba(255,59,59,.9) !important;
  animation:redPulse 1s infinite;color:#ffc2c2;
}
@keyframes pulse{0%,100%{box-shadow:0 0 6px rgba(250,204,21,.4);} 50%{box-shadow:0 0 16px rgba(250,204,21,.9);}}
@keyframes redPulse{0%,100%{box-shadow:0 0 8px rgba(255,59,59,.6);} 50%{box-shadow:0 0 22px rgba(255,59,59,1);}}
.line{stroke-width:2.5;fill:none;}
.line.locked{stroke:#262c48;}
.line.available{stroke:#7a6a2a;}
.line.unlocked{stroke:#2f6e4a;}

#topRight{position:absolute;top:12px;right:12px;display:flex;gap:6px;z-index:5;}
#topRight button{background:var(--panel);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:8px;cursor:pointer;font-size:13px;}
#topRight button:hover{border-color:var(--gold);}

#floatWrap{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none;z-index:6;}
.floatText{position:absolute;color:var(--gold);font-weight:bold;font-size:14px;animation:floatUp 0.8s ease-out forwards;pointer-events:none;}
@keyframes floatUp{0%{opacity:1;transform:translate(-50%,0);} 100%{opacity:0;transform:translate(-50%,-40px);}}

#toast{
  position:absolute;bottom:16px;left:50%;transform:translateX(-50%);
  background:var(--panel);border:1px solid var(--gold);color:var(--gold);
  padding:8px 16px;border-radius:20px;font-size:12px;
  opacity:0;transition:opacity .3s;pointer-events:none;z-index:20;
  max-width:80%;text-align:center;
}
#toast.show{opacity:1;}

.goldenSpark{
  position:absolute;font-size:34px;cursor:pointer;z-index:15;
  filter:drop-shadow(0 0 10px gold);
  animation:sparkBounce 1s infinite;
  transform:translate(-50%,-50%);
}
@keyframes sparkBounce{0%,100%{transform:translate(-50%,-50%) scale(1);} 50%{transform:translate(-50%,-58%) scale(1.15);}}

/* ===== Modal ===== */
.modalOverlay{position:fixed;left:0;top:0;width:100%;height:100%;background:rgba(5,6,12,.75);display:flex;align-items:center;justify-content:center;z-index:50;}
.modalOverlay.hidden{display:none;}
.modalBox{width:min(720px,90vw);max-height:80vh;background:var(--panel);border:1px solid var(--border);border-radius:12px;display:flex;flex-direction:column;overflow:hidden;}
.modalHeader{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--border);}
.modalHeader span{font-size:16px;color:var(--gold);font-weight:bold;}
.modalHeader button{background:none;border:none;color:var(--dim);font-size:18px;cursor:pointer;}
.modalHeader button:hover{color:var(--text);}
.modalBody{padding:14px 16px;overflow-y:auto;}
.modalSub{font-size:11px;color:var(--dim);margin-bottom:10px;}

.achGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;}
.achCard{border:1px solid var(--border);border-radius:8px;padding:8px;background:#161b30;display:flex;gap:8px;align-items:flex-start;}
.achCard.unlocked{border-color:var(--gold);background:#241d0e;}
.achIcon{font-size:20px;flex:none;}
.achName{font-size:11.5px;font-weight:bold;color:var(--text);}
.achCard.unlocked .achName{color:var(--gold);}
.achDesc{font-size:10px;color:var(--dim);margin-top:2px;line-height:1.4;}
.achCard:not(.unlocked){opacity:.55;}

.storyChapter{border:1px solid var(--border);border-radius:8px;padding:10px 12px;margin-bottom:8px;background:#161b30;}
.storyChapter.locked{opacity:.4;}
.storyChapter h5{margin:0 0 6px 0;font-size:13px;color:var(--gold);}
.storyChapter p{margin:0;font-size:12px;line-height:1.7;color:var(--text);}

::-webkit-scrollbar{width:8px;}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px;}