:root{
  --bg:#f4f6fa; --card:#fff; --line:#e3e8f0; --line2:#eef2f7;
  --ink:#1b2537; --muted:#69778c; --accent:#2563eb; --accent-soft:#eef4ff;
  --green:#0f9d76; --amber:#d97706; --red:#dc2626;
  --mono:ui-monospace,"Cascadia Code",Consolas,"SF Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  background:var(--bg); color:var(--ink);
  font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  overflow:hidden;
}
button,input,select,textarea{font-family:inherit;font-size:13px;color:var(--ink)}
button{cursor:pointer}
h1,h2,h3,p{margin:0}
.hidden{display:none !important}

/* ---------- 顶栏 ---------- */
.topbar{
  height:62px;display:flex;align-items:center;justify-content:space-between;
  padding:0 22px;background:#fff;border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:12px}
.logo{
  width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#1e40af,#3b82f6);
  color:#fff;display:grid;place-items:center;font-size:22px;box-shadow:0 3px 10px #2563eb33;
}
.brand h1{font-size:17px;letter-spacing:.3px}
.brand p{font-size:11.5px;color:var(--muted)}
.topmeta{display:flex;align-items:center;gap:9px}
.pill{
  font-size:11.5px;padding:4px 10px;border-radius:20px;
  background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;
}
.pill.muted{background:#f1f5f9;color:#475569;border-color:#e2e8f0}
.linkbtn{border:0;background:none;color:var(--accent);font-size:12.5px;padding:6px}
.linkbtn:hover{text-decoration:underline}

/* ---------- 布局 ---------- */
.layout{display:flex;height:calc(100vh - 62px)}
.panel{
  width:352px;flex:none;background:#fff;border-right:1px solid var(--line);
  overflow-y:auto;padding:6px 18px 24px;
}
.panel::-webkit-scrollbar,.tablewrap::-webkit-scrollbar,.modalbody::-webkit-scrollbar{width:9px}
.panel::-webkit-scrollbar-thumb,.tablewrap::-webkit-scrollbar-thumb,.modalbody::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:8px}
.content{flex:1;min-width:0;display:flex;flex-direction:column;padding:18px 22px;gap:14px}

.group{padding:15px 0;border-bottom:1px dashed var(--line)}
.group h2{font-size:12.5px;color:var(--accent);letter-spacing:.5px;margin-bottom:11px;font-weight:650}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:9px 10px}
label{display:block;font-size:11.5px;color:var(--muted);font-weight:500}
label>input,label>select{
  display:block;width:100%;margin-top:4px;padding:7px 9px;
  border:1px solid #d9e1ec;border-radius:7px;background:#fbfcfe;outline:none;
}
label>input:focus,label>select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb18}
input[type=number]{font-family:var(--mono)}
.check{display:flex;align-items:center;gap:7px;margin-top:9px;font-size:12px;color:#475569;cursor:pointer}
.check input{margin:0;accent-color:var(--accent)}
.hint{font-size:11px;color:var(--muted);line-height:1.6;margin-top:8px}
.hint strong{color:#334155}
.presets{display:flex;align-items:center;flex-wrap:wrap;gap:5px;margin-top:10px}
.presets span{font-size:11px;color:var(--muted);margin-right:2px}
.presets button{
  border:1px solid var(--line);background:#f8fafc;color:#475569;
  border-radius:14px;padding:2px 9px;font-size:11px;
}
.presets button:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}

.tabs{display:flex;gap:4px;margin-bottom:11px;background:#f1f5f9;padding:3px;border-radius:8px}
.tab{flex:1;border:0;background:none;padding:6px;border-radius:6px;font-size:12px;color:var(--muted)}
.tab.active{background:#fff;color:var(--accent);box-shadow:0 1px 3px #0f172a14;font-weight:600}
textarea{
  width:100%;resize:vertical;border:1px solid #d9e1ec;border-radius:7px;
  padding:9px;background:#fbfcfe;font:11.5px/1.6 var(--mono);outline:none;
}
.btnrow{display:flex;gap:7px;margin-top:9px;align-items:center}
.btn{
  border:1px solid #d9e1ec;background:#fff;border-radius:7px;padding:7px 12px;
  font-size:12.5px;color:#334155;transition:.15s;
}
.btn:hover{border-color:#a9bcd8;background:#f8faff}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#1d4ed8}
.btn.ghost{background:#f8fafc}
.btn.full{width:100%;margin-top:11px}
.btn.small{padding:4px 10px;font-size:11.5px}
.btn.calculate{
  width:100%;margin-top:17px;padding:11px;font-size:14px;font-weight:600;
  background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;border:0;border-radius:9px;
  box-shadow:0 4px 12px #2563eb30;
}
.btn.calculate:hover{filter:brightness(1.07)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.advanced{margin-top:10px;font-size:11.5px;color:var(--muted)}
.advanced summary{cursor:pointer;margin-bottom:7px}
.advanced label{margin-top:5px}
.status{margin-top:10px;font-size:11.5px;color:var(--muted);min-height:18px;text-align:center}
.status.err{color:var(--red)}

.satlist{margin-top:12px;display:flex;flex-direction:column;gap:7px}
.satcard{
  border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fbfcfe;
  display:flex;align-items:flex-start;gap:8px;
}
.satcard .info{flex:1;min-width:0}
.satcard b{display:block;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.satcard small{display:block;font-size:10.5px;color:var(--muted);margin-top:2px}
.satcard .del{border:0;background:none;color:#94a3b8;font-size:15px;line-height:1;padding:2px 4px}
.satcard .del:hover{color:var(--red)}
.badge-mini{display:inline-block;padding:1px 6px;border-radius:9px;background:#e0f2fe;color:#0369a1;font-size:10px;margin-top:3px}
.satcard .satchk{margin:3px 1px 0 0;flex:0 0 auto;width:14px;height:14px;accent-color:var(--accent);cursor:pointer}
.satcard.off{opacity:.5;background:#f4f6fa}
.satcard.off b{text-decoration:line-through}

/* ---------- 按 NORAD 筛选 ---------- */
.chips{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin:0 0 10px}
.chips:empty{display:none}
.chiplabel{font-size:11px;color:var(--muted);margin-right:2px;white-space:nowrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:14px;
  border:1px solid var(--accent);background:var(--accent-soft);color:var(--accent);
  font:600 11.5px var(--mono);line-height:1.5;transition:all .12s;
}
.chip:hover{filter:brightness(.96)}
.chip.off{border-color:var(--line);background:#fff;color:var(--muted)}
.chip.off em{background:#eef2f7;color:var(--muted)}
.chip em{font-style:normal;font-size:10px;background:#dbe9ff;color:#1d4ed8;border-radius:8px;padding:0 5px;min-width:17px;text-align:center}
.chip.all{border-color:var(--line);background:#fff;color:var(--ink);font-family:inherit;font-weight:600}
.chips .hint{font-size:10.5px;margin-left:4px}

/* ---------- 结果区 ---------- */
.resultbar{display:flex;justify-content:space-between;align-items:flex-end;gap:14px}
.resultbar h2{font-size:17px}
.resultbar p{font-size:12px;color:var(--muted);margin-top:3px}
.warnings{background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:8px;padding:9px 13px;font-size:12px;max-height:110px;overflow:auto}
.warnings div+div{margin-top:3px}
.tablewrap{flex:1;min-height:0;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:0 1px 3px #0f172a08}
table{border-collapse:collapse;width:100%;font-size:12.5px}
thead th{
  position:sticky;top:0;z-index:2;background:#f8fafc;text-align:left;
  padding:10px 11px;font-size:11px;font-weight:650;color:#475569;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.thtz{font-weight:500;font-size:10px;color:#0e7490;background:#e0f2fe;border-radius:4px;padding:1px 4px;margin-left:2px}
tbody td{padding:9px 11px;border-bottom:1px solid var(--line2);white-space:nowrap}
tbody tr{cursor:pointer;transition:background .12s}
tbody tr:not(.empty):hover{background:var(--accent-soft)}
tbody tr.empty td{cursor:default;color:var(--muted);text-align:center;padding:46px 12px}
.mono{font-family:var(--mono);font-size:11.5px}
.elcell{display:flex;align-items:center;gap:8px;min-width:120px}
.elbar{height:5px;border-radius:4px;background:#e8eef7;flex:1;min-width:46px;overflow:hidden}
.elbar i{display:block;height:100%;background:linear-gradient(90deg,#60a5fa,#2563eb);border-radius:4px}
.elval{font-family:var(--mono);font-weight:650;color:#1d4ed8;min-width:46px;text-align:right}
.tag{display:inline-block;padding:2px 8px;border-radius:11px;font-size:10.5px;font-weight:600}
.tag.night{background:#e0e7ff;color:#3730a3}
.tag.day{background:#fef3c7;color:#92400e}
.vis{font-size:11px;color:var(--muted)}
.vis.good{color:var(--green);font-weight:600}

/* ---------- 模态 ---------- */
.modal{
  position:fixed;inset:0;background:#0f172a99;backdrop-filter:blur(3px);
  z-index:50;display:grid;place-items:center;padding:18px;
}
.modalbox{
  background:#fff;border-radius:14px;width:min(1240px,97vw);height:min(840px,94vh);
  display:flex;flex-direction:column;overflow:hidden;box-shadow:0 22px 70px #0f172a55;
}
.modalbox.smallbox{width:min(680px,94vw);height:auto;max-height:88vh}
.modalhead{
  display:flex;justify-content:space-between;align-items:center;
  padding:13px 18px;border-bottom:1px solid var(--line);flex:none;
}
.modalhead h2{font-size:16px}
.modalhead p{font-size:11.5px;color:var(--muted);margin-top:2px}
.iconbtn{border:0;background:#f1f5f9;width:29px;height:29px;border-radius:7px;color:#475569;font-size:14px}
.iconbtn:hover{background:#e2e8f0}
.modalbody{flex:1;min-height:0;display:flex;overflow:hidden}
.canvaswrap{
  flex:1;min-width:0;position:relative;background:#0d1426;
  display:grid;place-items:center;overflow:hidden;
}
#skyCanvas{display:block;max-width:100%;max-height:100%}
.canvasbadge{
  position:absolute;left:14px;top:12px;font-size:11px;color:#cbd5e1;
  background:#0f172a99;padding:4px 10px;border-radius:13px;pointer-events:none;
}
.tooltip{
  position:absolute;pointer-events:none;z-index:5;background:#0f172aee;color:#e2e8f0;
  border:1px solid #475569;border-radius:7px;padding:7px 10px;font:11px/1.6 var(--mono);
  white-space:nowrap;box-shadow:0 6px 20px #0006;
}
.skyctrl{
  width:288px;flex:none;border-left:1px solid var(--line);overflow-y:auto;
  padding:6px 16px 20px;background:#fbfcfe;
}
.ctrlblock{padding:14px 0;border-bottom:1px dashed var(--line)}
.ctrlblock h3{font-size:11.5px;color:var(--accent);letter-spacing:.4px;margin-bottom:10px}
.segmented{display:flex;background:#eef2f7;border-radius:7px;padding:3px;gap:2px}
.segmented button{flex:1;border:0;background:none;font-size:11px;padding:6px 2px;border-radius:5px;color:#64748b}
.segmented button.active{background:#fff;color:var(--accent);font-weight:650;box-shadow:0 1px 3px #0f172a14}
input[type=range]{width:100%;accent-color:var(--accent);margin:4px 0}
.timerow{display:flex;justify-content:space-between;align-items:center;margin-top:5px}
.timerow span{font:12px var(--mono);color:#334155}
.hint select{display:inline-block;width:auto;margin:0 3px;padding:2px 5px;border:1px solid var(--line);border-radius:5px;background:#fff}
.kv{display:grid;grid-template-columns:auto 1fr;gap:5px 10px;font-size:11.5px}
.kv span:nth-child(odd){color:var(--muted)}
.kv span:nth-child(even){font-family:var(--mono);text-align:right;color:#1e293b}
.legend div{font-size:11.5px;color:#475569;display:flex;align-items:center;gap:7px;margin-bottom:5px}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;flex:none}
.dot.sat{background:#ff8a3d}.dot.shade{background:#64748b}.dot.star{background:#dbeafe}
.dot.planet{background:#f6e3b4}.dot.sun{background:#fbbf24}.dot.moon{background:#cbd5e1}
.helpbody{padding:6px 22px 24px;overflow-y:auto;font-size:13px;line-height:1.8;color:#334155}
.helpbody h3{font-size:13px;color:var(--accent);margin:16px 0 5px}
.helpbody code{background:#f1f5f9;padding:1px 5px;border-radius:4px;font-size:12px}
@media(max-width:1050px){
  .panel{width:310px}.skyctrl{width:240px}
  .modalbody{flex-direction:column}.skyctrl{width:100%;border-left:0;border-top:1px solid var(--line);max-height:240px}
}