/* ===========================================================
   game.css —— 拼装小游戏通用样式（风电/光伏/水电/氢能共用）
   =========================================================== */
:root{--bg-0:#05081a;--bg-1:#0a1230;--bg-2:#0d1a3f;--cyan:#34e3ff;--blue:#4d7cff;--amber:#ffcf3f;--green:#37e6a5;--text:#eaf1ff;--muted:#93a6cf;--line:rgba(120,180,255,.16);--glass:rgba(255,255,255,.045)}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:"Noto Sans SC",sans-serif;background:var(--bg-0);color:var(--text);line-height:1.7;overflow:hidden}
body.dragging{user-select:none;cursor:grabbing}
.bg-fx{position:fixed;inset:0;z-index:-2;background:radial-gradient(1200px 700px at 78% -8%,rgba(52,227,255,.16),transparent 60%),radial-gradient(900px 600px at 8% 20%,rgba(77,124,255,.16),transparent 60%),linear-gradient(180deg,var(--bg-0),var(--bg-1) 45%,var(--bg-2))}
a{color:inherit;text-decoration:none}
.top{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,8,26,.9),rgba(5,8,26,.55));backdrop-filter:blur(12px)}
.top h1{font-size:17px;font-weight:800;display:flex;align-items:center;gap:10px}
.top h1 .em{font-size:20px}
.top .tagline{font-family:"Orbitron",sans-serif;font-size:11px;letter-spacing:.2em;color:var(--amber)}
.backlink{padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:700;color:var(--cyan);border:1px solid rgba(52,227,255,.4);background:rgba(52,227,255,.07);transition:.25s}
.backlink:hover{background:rgba(52,227,255,.16)}

.game{height:calc(100% - 62px);display:grid;grid-template-columns:1fr 340px;gap:0}
@media(max-width:900px){.game{grid-template-columns:1fr;grid-template-rows:1fr auto} body{overflow:auto}}

/* ---- 舞台 ---- */
.stagecol{position:relative;display:flex;flex-direction:column;min-height:0}
.stage{position:relative;flex:1;min-height:0;margin:16px 0 0 16px;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  background:radial-gradient(circle at 42% 14%,rgba(52,227,255,.12),transparent 60%),linear-gradient(180deg,rgba(7,13,34,.92),rgba(9,18,46,.94));
  transition:box-shadow .25s,border-color .25s}
.stage.drop-over{border-color:rgba(52,227,255,.6);box-shadow:0 0 0 2px rgba(52,227,255,.25),0 20px 60px rgba(0,0,0,.5) inset}
.stage canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}
.stage canvas:active{cursor:grabbing}

.loading{position:absolute;inset:0;display:grid;place-items:center;background:rgba(5,8,24,.94);z-index:9;transition:opacity .5s;text-align:center;color:var(--muted);font-size:14px}
.loading.hide{opacity:0;pointer-events:none}
.spinner{width:40px;height:40px;border-radius:50%;border:3px solid rgba(52,227,255,.25);border-top-color:var(--cyan);animation:spin .9s linear infinite;margin:0 auto 12px}
@keyframes spin{to{transform:rotate(360deg)}}

.hintbar{height:46px;display:flex;align-items:center;gap:10px;padding:0 20px;font-size:13.5px;color:var(--muted)}
.hintbar b{color:var(--cyan)}

/* 目标框（跟随 3D 投影） */
#markers{position:absolute;inset:0;pointer-events:none;z-index:4}
.marker{position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;color:#bfe9ff;transition:color .2s}
.marker::before{content:"";width:var(--mr,96px);height:var(--mr,96px);border-radius:50%;border:2px dashed rgba(52,227,255,.75);
  box-shadow:0 0 26px rgba(52,227,255,.35),inset 0 0 26px rgba(52,227,255,.18);animation:beat 1.6s ease-in-out infinite}
.marker.hot{color:#bfffe6}
.marker.hot::before{border-color:var(--green);box-shadow:0 0 34px rgba(55,230,165,.6),inset 0 0 30px rgba(55,230,165,.3)}
@keyframes beat{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}

/* HUD */
.hud{position:absolute;left:16px;top:14px;z-index:6;display:flex;align-items:center;gap:12px}
.progress{padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:700;color:#dff2ff;background:rgba(5,12,30,.75);border:1px solid var(--line)}
.progress b{color:var(--cyan);font-family:"Orbitron",sans-serif}
.btn-mini{padding:8px 15px;border-radius:999px;font-size:13px;font-weight:700;color:var(--muted);background:rgba(5,12,30,.75);border:1px solid var(--line);cursor:pointer;transition:.22s}
.btn-mini:hover{color:#fff;border-color:rgba(52,227,255,.55)}

/* 提示气泡 */
.toast{position:absolute;left:50%;top:22px;transform:translate(-50%,-24px);z-index:8;max-width:76%;padding:12px 22px;border-radius:14px;
  font-size:14.5px;font-weight:600;opacity:0;pointer-events:none;transition:.32s cubic-bezier(.22,.61,.36,1);text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.ok{color:#062b1d;background:linear-gradient(120deg,#5cf0b8,#37e6a5);box-shadow:0 14px 36px rgba(55,230,165,.4)}
.toast.hint{color:#3a2a00;background:linear-gradient(120deg,#ffe08a,#ffcf3f);box-shadow:0 14px 36px rgba(255,207,63,.35)}

/* 成功横幅 */
.banner{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.86);z-index:8;padding:26px 40px;border-radius:20px;text-align:center;
  background:radial-gradient(circle at 50% 0%,rgba(55,230,165,.28),transparent 70%),rgba(6,18,36,.94);border:1px solid rgba(55,230,165,.55);
  box-shadow:0 30px 70px rgba(0,0,0,.55);opacity:0;pointer-events:none;transition:.45s cubic-bezier(.22,.61,.36,1)}
.banner.show{opacity:1;transform:translate(-50%,-50%) scale(1)}
.banner .big{font-size:34px}
.banner h2{font-size:22px;font-weight:900;margin:6px 0 4px;color:#bfffe6}
.banner p{font-size:13.5px;color:var(--muted)}

/* ---- 右侧零件箱 ---- */
.panel{display:flex;flex-direction:column;gap:12px;padding:18px;border-left:1px solid var(--line);background:rgba(6,11,28,.55);min-height:0}
.panel h2{font-size:18px;font-weight:900;display:flex;align-items:center;gap:8px}
.panel h2 span{font-size:12px;font-weight:600;color:var(--amber);border:1px solid rgba(255,207,63,.35);background:rgba(255,207,63,.08);padding:3px 9px;border-radius:999px}
.panel .sub{font-size:12.5px;color:var(--muted);margin-bottom:4px}
.parts{display:flex;flex-direction:column;gap:10px;overflow-y:auto;padding-right:4px;flex:1}
.part{display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:12px;padding:9px 12px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);cursor:grab;touch-action:none;transition:transform .18s,box-shadow .18s,border-color .18s}
.part:hover{transform:translateX(-4px);border-color:rgba(52,227,255,.55);box-shadow:0 10px 26px rgba(0,0,0,.4)}
.part.lift{transform:scale(1.04);border-color:var(--cyan);box-shadow:0 16px 40px rgba(52,227,255,.28);opacity:.55}
.part img{width:64px;height:46px;object-fit:cover;border-radius:9px;border:1px solid var(--line);pointer-events:none}
.part .pmeta b{display:block;font-size:15px}
.part .pmeta small{color:var(--muted);font-size:12px}
.part .grab{font-size:11.5px;font-weight:700;color:var(--cyan);border:1px solid rgba(52,227,255,.4);background:rgba(52,227,255,.09);padding:4px 10px;border-radius:999px;white-space:nowrap}
.part.done{opacity:.55;cursor:default;border-color:rgba(55,230,165,.5);background:rgba(55,230,165,.06)}
.part.done:hover{transform:none;box-shadow:none}
.part.done .grab{color:var(--green);border-color:rgba(55,230,165,.45);background:rgba(55,230,165,.1)}
.order{padding:11px 14px;border-radius:12px;font-size:12.5px;color:var(--muted);background:rgba(255,255,255,.035);border:1px dashed var(--line);text-align:center}
.order b{color:var(--cyan)}

/* 跟随鼠标的拖拽幽灵 */
.dragghost{position:fixed;z-index:9999;pointer-events:none;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:5px}
.dragghost img{width:104px;height:74px;object-fit:cover;border-radius:12px;border:1px solid rgba(52,227,255,.7);box-shadow:0 18px 40px rgba(0,0,0,.55),0 0 24px rgba(52,227,255,.4)}
.dragghost span{font-size:12.5px;font-weight:800;color:#04122b;background:linear-gradient(120deg,var(--cyan),var(--blue));padding:2px 12px;border-radius:999px}