/* =======================================================================
 *  app.css  —  深空玻璃质感 UI
 * ======================================================================= */
:root{
  --bg:#04060c;
  --glass:rgba(12,18,30,.62);
  --glass-2:rgba(16,24,40,.78);
  --line:rgba(140,180,255,.14);
  --line-2:rgba(140,180,255,.28);
  --txt:#dce6f7;
  --txt-dim:#8fa3c4;
  --accent:#6fd0ff;
  --accent-2:#ffb257;
  --danger:#ff6b52;
  --ok:#5fe0a0;
  --shadow:0 12px 40px rgba(0,0,0,.55);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%;overflow:hidden;background:var(--bg);color:var(--txt);
  font-family:"Inter","PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  font-size:13px;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
canvas#gl{position:fixed;inset:0;display:block;width:100%;height:100%;cursor:grab}
canvas#gl.dragging{cursor:grabbing}
canvas#gl.aiming{cursor:crosshair}
.mono{font-family:"JetBrains Mono","SFMono-Regular",Consolas,monospace}

.glass{background:var(--glass);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);box-shadow:var(--shadow)}

/* ----------------------------- 顶栏 ----------------------------- */
#topbar{position:fixed;top:10px;left:10px;right:10px;height:52px;border-radius:14px;
  display:flex;align-items:center;gap:14px;padding:0 14px;z-index:20}
.brand{display:flex;align-items:center;gap:10px;min-width:210px}
.logo{width:26px;height:26px;border-radius:50%;flex:0 0 auto;
  background:radial-gradient(circle at 34% 32%,#fff8e0 0,#ffb347 38%,#ff6a1e 62%,#5b1d05 100%);
  box-shadow:0 0 16px rgba(255,150,60,.75),0 0 42px rgba(255,110,40,.35)}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt b{font-size:13.5px;letter-spacing:.04em}
.brand-txt small{color:var(--txt-dim);font-size:11px}
.tgroup{display:flex;align-items:center;gap:6px}
.tbtn{background:rgba(255,255,255,.04);color:var(--txt);border:1px solid var(--line);
  border-radius:9px;padding:5px 9px;font-size:11.5px;cursor:pointer;transition:.16s;white-space:nowrap}
.tbtn:hover{background:rgba(111,208,255,.14);border-color:var(--line-2)}
.tbtn.active{background:rgba(111,208,255,.22);border-color:var(--accent);color:#fff;
  box-shadow:0 0 14px rgba(111,208,255,.28) inset}
.chk{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--txt-dim);cursor:pointer;user-select:none}
.chk input{appearance:none;width:14px;height:14px;border-radius:4px;border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);cursor:pointer;position:relative}
.chk input:checked{background:var(--accent);border-color:var(--accent)}
.chk input:checked::after{content:"";position:absolute;left:3.6px;top:1px;width:4px;height:8px;
  border:2px solid #04121c;border-top:0;border-left:0;transform:rotate(40deg)}
.chk.wide{padding:6px 2px}
.mini-label{color:var(--txt-dim);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase}
select{background:rgba(10,16,28,.9);color:var(--txt);border:1px solid var(--line);
  border-radius:8px;padding:5px 7px;font-size:11.5px;outline:none;cursor:pointer;max-width:100%}
.fps{margin-left:auto;color:var(--txt-dim);font-size:11px;font-family:"JetBrains Mono",monospace;white-space:nowrap}

/* ----------------------------- 面板 ----------------------------- */
.panel{position:fixed;border-radius:14px;z-index:18;display:flex;flex-direction:column;overflow:hidden}
#left{left:10px;top:74px;bottom:52px;width:236px}
#right{right:10px;top:74px;bottom:52px;width:322px}
.panel-head{display:flex;align-items:center;justify-content:space-between;
  padding:9px 12px;border-bottom:1px solid var(--line);flex:0 0 auto}
.panel-head b{font-size:12px;letter-spacing:.1em}
.collapse{background:none;border:1px solid var(--line);color:var(--txt-dim);border-radius:6px;
  width:20px;height:20px;line-height:1;cursor:pointer;font-size:13px;padding:0}
.panel-body{padding:10px 12px 16px;overflow-y:auto;overflow-x:hidden;flex:1 1 auto;
  scrollbar-width:thin;scrollbar-color:rgba(140,180,255,.3) transparent}
.panel-body::-webkit-scrollbar{width:7px}
.panel-body::-webkit-scrollbar-thumb{background:rgba(140,180,255,.22);border-radius:4px}
.panel.collapsed{height:38px;bottom:auto}
.panel.collapsed .panel-body{display:none}
.sep{height:1px;background:var(--line);margin:12px 0}

/* -------------------------- 天体列表 --------------------------- */
.body-item{display:flex;align-items:center;gap:9px;padding:6px 7px;border-radius:9px;
  cursor:pointer;transition:.14s;border:1px solid transparent}
.body-item:hover{background:rgba(111,208,255,.09)}
.body-item.active{background:rgba(111,208,255,.16);border-color:var(--line-2)}
.body-item.moon{padding-left:20px}
.dot{width:14px;height:14px;border-radius:50%;flex:0 0 auto;box-shadow:0 0 8px currentColor}
.body-item .nm{font-size:12px;flex:1 1 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.body-item .badge{font-size:9.5px;color:var(--accent-2);background:rgba(255,178,87,.14);
  border-radius:5px;padding:1px 4px;white-space:nowrap}
.body-item.moon .nm{color:var(--txt-dim);font-size:11.5px}

#body-file h3{margin:0 0 6px;font-size:13px;letter-spacing:.06em}
#body-file .desc{color:var(--txt-dim);font-size:11.5px;line-height:1.65;margin-bottom:9px}
.kv{display:flex;justify-content:space-between;gap:8px;padding:2.5px 0;font-size:11.5px;
  border-bottom:1px dotted rgba(140,180,255,.10)}
.kv span{color:var(--txt-dim)}
.kv b{font-weight:500;font-family:"JetBrains Mono",monospace;font-size:11px;text-align:right}

/* -------------------------- 参数控件 --------------------------- */
.target-row{display:flex;justify-content:space-between;align-items:flex-end;gap:10px}
.target-name{font-size:17px;font-weight:600;letter-spacing:.03em}
.aim-box{text-align:right}
.aim-box .mono{font-size:11px;color:var(--accent)}
.hint{color:var(--txt-dim);font-size:10.5px;line-height:1.55;margin:5px 0 0}
.field{margin-top:13px}
.field.two{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.field-head{display:flex;justify-content:space-between;align-items:baseline;font-size:11.5px;
  color:var(--txt-dim);margin-bottom:5px}
.field-head b{color:var(--txt);font-size:12.5px;font-family:"JetBrains Mono",monospace}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:22px;background:none;cursor:pointer;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:3px;
  background:linear-gradient(90deg,rgba(111,208,255,.55),rgba(255,178,87,.5))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;margin-top:-5px;
  border-radius:50%;background:#eaf6ff;border:2px solid #2b6a8f;box-shadow:0 0 10px rgba(111,208,255,.7)}
input[type=range]::-moz-range-track{height:4px;border-radius:3px;background:rgba(111,208,255,.45)}
input[type=range]::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:#eaf6ff;border:2px solid #2b6a8f}
.ticks{display:flex;justify-content:space-between;color:rgba(143,163,196,.6);font-size:9.5px;margin-top:-2px}
.mat-row{display:flex;gap:5px}
.mat{flex:1 1 0;border:1px solid var(--line);background:rgba(255,255,255,.03);border-radius:8px;
  padding:6px 2px;text-align:center;font-size:10.5px;cursor:pointer;transition:.15s;color:var(--txt-dim)}
.mat:hover{border-color:var(--line-2);color:var(--txt)}
.mat.active{border-color:var(--accent);background:rgba(111,208,255,.18);color:#fff}
.mat .sw{width:14px;height:14px;border-radius:50%;margin:0 auto 3px;box-shadow:0 0 6px rgba(0,0,0,.5) inset}

.btn-row{display:flex;gap:8px;margin-top:14px}
button.primary{flex:1 1 auto;background:linear-gradient(135deg,#ff8a3c,#ff4f2e);color:#fff;border:0;
  border-radius:10px;padding:10px 12px;font-size:13px;font-weight:600;cursor:pointer;letter-spacing:.06em;
  box-shadow:0 6px 22px rgba(255,90,40,.35);transition:.16s}
button.primary:hover{filter:brightness(1.12);transform:translateY(-1px)}
button.primary:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none}
button.ghost{background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--txt-dim);
  border-radius:10px;padding:10px;font-size:11.5px;cursor:pointer;transition:.16s;white-space:nowrap}
button.ghost:hover{color:var(--txt);border-color:var(--line-2)}

/* -------------------------- 预览 / 结果 ------------------------ */
.preview{margin-top:12px;border:1px solid var(--line);border-radius:10px;padding:9px 10px;
  background:rgba(8,14,26,.55)}
.preview .pv-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4px}
.preview .pv-e{font-size:15px;font-weight:600;font-family:"JetBrains Mono",monospace;color:var(--accent-2)}
.tag{display:inline-block;font-size:10px;padding:2px 6px;border-radius:5px;letter-spacing:.06em}
.tag.ground{background:rgba(255,120,80,.18);color:#ff9d7d;border:1px solid rgba(255,120,80,.35)}
.tag.airburst{background:rgba(255,205,90,.16);color:#ffd66e;border:1px solid rgba(255,205,90,.3)}
.tag.burnup{background:rgba(150,180,255,.14);color:#a9c4ff;border:1px solid rgba(150,180,255,.28)}
.tag.gasburst{background:rgba(200,140,255,.15);color:#d3a6ff;border:1px solid rgba(200,140,255,.3)}
.tag.fall{background:rgba(160,200,190,.14);color:#a8d8c8;border:1px solid rgba(160,200,190,.28)}
.tag.vaporized{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.3)}
.res-title{display:flex;align-items:center;gap:8px;margin:0 0 8px;font-size:12.5px;letter-spacing:.08em}
.res-note{color:var(--txt-dim);font-size:11px;line-height:1.7;margin:7px 0 0;padding-left:9px;
  border-left:2px solid rgba(255,178,87,.4)}
.bar{height:5px;border-radius:3px;background:rgba(255,255,255,.07);overflow:hidden;margin:3px 0 7px}
.bar i{display:block;height:100%;border-radius:3px;transition:width .5s}
.empty{color:var(--txt-dim);font-size:11px;text-align:center;padding:14px 4px;line-height:1.7}
.warnlbl{color:var(--accent-2)!important;font-size:9.5px!important;letter-spacing:.1em;
  border:1px solid rgba(255,178,87,.35);border-radius:4px;padding:1px 5px}
.kv i{font-style:normal;font-size:10px}

/* -------------------------- 底栏 / 提示 ------------------------ */
#bottom{position:fixed;left:10px;right:10px;bottom:10px;height:34px;border-radius:11px;
  display:flex;align-items:center;gap:9px;padding:0 14px;font-size:11px;color:var(--txt-dim);z-index:20}
.kb{background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:5px;
  padding:1.5px 6px;color:var(--txt);font-size:10.5px}
.sepdot{width:4px;height:4px;border-radius:50%;background:var(--line-2);margin:0 4px}
#status-line{color:var(--accent);margin-left:auto;font-size:11px}

#toast{position:fixed;left:50%;top:78px;transform:translateX(-50%);z-index:40;
  display:flex;flex-direction:column;gap:7px;align-items:center;pointer-events:none}
.toast{background:rgba(10,18,32,.9);border:1px solid var(--line-2);border-radius:10px;
  padding:8px 15px;font-size:12px;box-shadow:var(--shadow);animation:tin .3s ease;
  backdrop-filter:blur(12px);max-width:70vw}
.toast.warn{border-color:rgba(255,178,87,.5);color:#ffd39b}
.toast.hit{border-color:rgba(255,110,80,.55);color:#ffb4a0}
@keyframes tin{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* -------------------------- 叠加层 ---------------------------- */
#overlay{position:fixed;inset:0;pointer-events:none;z-index:12;overflow:hidden}
.pin{position:absolute;transform:translate(-50%,-50%);white-space:nowrap;font-size:11px;
  color:rgba(214,230,255,.82);text-shadow:0 0 8px rgba(0,0,0,.9);display:flex;align-items:center;gap:5px}
.pin i{width:5px;height:5px;border-radius:50%;background:currentColor;box-shadow:0 0 6px currentColor;flex:0 0 auto}
.pin.moon{font-size:10px;color:rgba(170,192,224,.62)}
.pin.focus{color:#fff;font-size:12px}
.aim{position:absolute;width:34px;height:34px;transform:translate(-50%,-50%);
  border:1px solid rgba(255,120,80,.9);border-radius:50%;
  box-shadow:0 0 14px rgba(255,110,70,.6),0 0 4px rgba(255,110,70,.9) inset}
.aim::before,.aim::after{content:"";position:absolute;background:rgba(255,140,100,.95)}
.aim::before{left:50%;top:-9px;width:1px;height:8px}
.aim::after{left:-9px;top:50%;height:1px;width:8px}
.aim b{position:absolute;left:50%;top:-24px;transform:translateX(-50%);font-size:9.5px;
  color:#ffb49c;letter-spacing:.1em;font-weight:500}

/* -------------------------- 帮助 / 诊断 / 载入 ---------------- */
.modal{position:fixed;inset:0;background:rgba(2,4,10,.72);z-index:60;display:none;
  align-items:center;justify-content:center;backdrop-filter:blur(6px)}
.modal.open{display:flex}
.modal-box{max-width:620px;max-height:82vh;overflow-y:auto;border-radius:16px;padding:22px 26px}
.modal-box h2{margin:0 0 10px;font-size:19px;letter-spacing:.04em}
.modal-box h3{margin:16px 0 6px;font-size:13px;color:var(--accent);letter-spacing:.06em}
.modal-box p,.modal-box li{color:#c3d2ea;font-size:12.5px;line-height:1.8}
.modal-box ul{margin:0;padding-left:19px}
.modal-box button{margin-top:18px;width:100%}

#diag{position:fixed;left:10px;bottom:52px;width:min(560px,60vw);max-height:34vh;overflow:auto;
  border-radius:11px;padding:8px 11px;font-size:10.5px;z-index:50;display:none;
  font-family:"JetBrains Mono",monospace}
#diag.visible{display:block}
.diag-head{color:var(--danger);letter-spacing:.1em;margin-bottom:5px;font-size:10px}
.diag-error{color:#ff9c8a;white-space:pre-wrap;margin-bottom:5px}
.diag-warn{color:#ffd08a;white-space:pre-wrap;margin-bottom:3px}

#loading{position:fixed;inset:0;background:var(--bg);z-index:80;display:flex;
  flex-direction:column;align-items:center;justify-content:center;gap:16px;transition:opacity .5s}
#loading.hide{opacity:0;pointer-events:none}
.spin{width:42px;height:42px;border-radius:50%;border:2px solid rgba(111,208,255,.18);
  border-top-color:var(--accent);animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
#loading-txt{color:var(--txt-dim);font-size:12px;letter-spacing:.14em}

/* 截图 / 展示模式：?ui=0 */
body.noui #topbar,body.noui #left,body.noui #right,body.noui #bottom,
body.noui #toast,body.noui #help-modal,body.noui #diag{display:none!important}
body.noui #overlay .pin{display:none!important}

@media (max-width:1180px){
  #left{width:196px}
  #right{width:290px}
  .brand-txt{display:none}
}
@media (max-width:900px){
  #left{display:none}
  #topbar{height:auto;flex-wrap:wrap;padding:8px 10px;gap:8px}
  #right{top:auto;bottom:52px;height:52vh;width:auto;left:10px;right:10px}
}