:root{
  --bg:#020510; --panel:rgba(6,11,28,.72); --line:rgba(175,205,255,.20);
  --text:#eff7ff; --muted:#9fb6dc; --accent:#7de7ff; --gold:#f6d66f;
}
*{box-sizing:border-box} html,body{height:100%;margin:0;overflow:hidden;background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,Arial,sans-serif;touch-action:none;overscroll-behavior:none;-webkit-text-size-adjust:100%;} body{position:fixed;inset:0;}
#atlas{position:fixed;inset:0;width:100vw;height:100vh;display:block;background:#020510;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;}.loader{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);padding:16px 22px;border:1px solid var(--line);border-radius:16px;background:rgba(7,12,30,.86);backdrop-filter:blur(14px);box-shadow:0 16px 60px rgba(0,0,0,.35);color:var(--accent);z-index:5}.loader.hidden{display:none}
.hudbar{position:fixed;left:12px;right:12px;top:12px;display:flex;align-items:flex-start;gap:10px;z-index:3;pointer-events:none}.hudbar>*{pointer-events:auto}.toolbar,.search-wrap{border:1px solid var(--line);background:rgba(6,11,28,.58);backdrop-filter:blur(13px);box-shadow:0 16px 55px rgba(0,0,0,.26);border-radius:15px}.search-wrap{position:relative;flex:1;max-width:min(620px,calc(100vw - 24px));padding:8px}#search{width:100%;padding:10px 12px;border-radius:12px;border:1px solid rgba(160,190,255,.18);outline:none;background:rgba(0,0,0,.30);color:var(--text);font-size:14px}#search-results{position:absolute;left:8px;right:8px;top:52px;max-height:260px;overflow:auto;background:rgba(5,10,25,.94);border:1px solid rgba(160,190,255,.22);border-radius:14px;display:none;padding:6px}.result{padding:8px 10px;border-radius:10px;cursor:pointer;font-size:13px}.result:hover{background:rgba(125,231,255,.11)}.result small{display:block;color:var(--muted);margin-top:2px}.toolbar{display:flex;align-items:center;gap:8px;padding:8px 10px}button{border:1px solid rgba(160,190,255,.22);background:linear-gradient(180deg,rgba(110,165,255,.22),rgba(80,120,220,.10));color:var(--text);border-radius:10px;padding:8px 11px;cursor:pointer}button:hover{border-color:rgba(125,231,255,.55)}.limit-label{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;white-space:nowrap}.limit-label select{border:1px solid rgba(160,190,255,.22);background:rgba(0,0,0,.28);color:var(--text);border-radius:9px;padding:6px 8px}.limit-label select option{background:#071022;color:var(--text)}.guide{position:relative;color:var(--muted);font-size:13px}.guide summary{cursor:pointer;padding:8px 10px;border:1px solid rgba(160,190,255,.20);border-radius:10px;list-style:none}.guide summary::-webkit-details-marker{display:none}.guide-body{position:absolute;right:0;top:44px;width:390px;padding:12px 14px;background:rgba(5,10,25,.95);border:1px solid rgba(160,190,255,.22);border-radius:14px;color:var(--text);box-shadow:0 18px 65px rgba(0,0,0,.45);line-height:1.45}.guide-body p{margin:8px 0;font-size:12px;color:#d8e8ff}.detail{position:fixed;right:16px;top:78px;bottom:16px;width:min(470px,calc(100vw - 32px));z-index:4;border:1px solid rgba(160,190,255,.24);background:rgba(5,10,25,.88);backdrop-filter:blur(18px);box-shadow:0 24px 85px rgba(0,0,0,.52);border-radius:18px;overflow:auto;padding:18px}.detail.hidden{display:none}.close{position:sticky;top:0;float:right;z-index:2;border-radius:50%;width:34px;height:34px;padding:0;font-size:20px;background:rgba(255,255,255,.08)}.card{border:1px solid rgba(160,190,255,.14);background:rgba(255,255,255,.035);border-radius:15px;padding:12px;margin:10px 0}.title{font-weight:750;font-size:18px;margin:0 42px 10px 0}.section{font-size:13px;font-weight:700;color:var(--accent);margin:13px 0 8px}.grid{display:grid;grid-template-columns:138px 1fr;gap:5px 10px;font-size:12.5px;line-height:1.45}.k{color:var(--muted)}.code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;white-space:pre-wrap;word-break:break-word;color:#e9f7ff}.members{display:flex;flex-direction:column;gap:6px;max-height:260px;overflow:auto}.member{width:100%;text-align:left;font-size:12px}.member.active{border-color:var(--accent);box-shadow:0 0 0 1px rgba(125,231,255,.20) inset}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.tablewrap{max-height:230px;overflow:auto;border:1px solid rgba(160,190,255,.13);border-radius:12px}table{width:100%;border-collapse:collapse;font-size:11.5px}th,td{border-bottom:1px solid rgba(160,190,255,.10);padding:6px 7px;text-align:left}th{position:sticky;top:0;background:rgba(7,12,30,.98);color:var(--accent)}.pill{display:inline-block;padding:2px 7px;border-radius:999px;border:1px solid rgba(160,190,255,.18);color:#dcecff;background:rgba(125,231,255,.06);font-size:11.5px;margin:2px 3px 2px 0}.muted{color:var(--muted);font-size:12px}.tooltip{position:fixed;z-index:6;pointer-events:none;padding:8px 10px;border-radius:12px;border:1px solid rgba(160,190,255,.22);background:rgba(5,10,25,.975);backdrop-filter:blur(14px);box-shadow:0 16px 48px rgba(0,0,0,.54);font-size:12px;line-height:1.35;color:var(--text);display:none;max-width:430px}.tooltip .muted{font-size:11px}.tip-grid{display:grid;grid-template-columns:112px 1fr;gap:4px 8px}.tip-k{color:var(--muted)}
@media(max-width:1180px){.hudbar{flex-wrap:wrap;left:8px;right:8px;top:8px}.toolbar{flex-wrap:wrap}.search-wrap{max-width:none;flex-basis:100%;order:1}.toolbar{order:2}.detail{top:118px}.guide-body{right:auto;left:0}.two-col{grid-template-columns:1fr}}

.relation{display:block;color:#cbe3ff;font-size:11px;line-height:1.35;margin-top:2px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.member.ciso{border-color:rgba(255,211,145,.22);background:linear-gradient(180deg,rgba(255,211,145,.06),rgba(125,231,255,.035))}
.pointsbox{margin-top:8px;line-height:1.5}.sbox{margin-top:10px;border-top:1px solid rgba(160,190,255,.10);padding-top:8px}.sbox summary{cursor:pointer;color:var(--accent);font-size:12.5px}.srow{display:flex;gap:8px;align-items:center;margin:8px 0}.srow input{width:120px;border:1px solid rgba(160,190,255,.22);background:rgba(0,0,0,.28);color:var(--text);border-radius:9px;padding:6px 8px}

.controls-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:10px 0 8px}.num-input{width:90px;padding:8px 10px;border-radius:10px;border:1px solid rgba(160,190,255,.22);background:rgba(0,0,0,.28);color:var(--text)}.points-box{border:1px solid rgba(160,190,255,.13);background:rgba(255,255,255,.02);border-radius:12px;padding:10px;min-height:44px}.relation{display:block;color:#d9e7ff;font-size:11.5px;margin-top:3px}.card .pill{margin-bottom:4px}

.tip-equation{max-width:290px}
.atlas-progress{position:fixed;left:0;right:0;top:0;height:4px;z-index:7;background:rgba(125,231,255,.045);pointer-events:none;transition:opacity .5s ease}.atlas-progress.quiet{opacity:.18}.atlas-progress #atlas-progress-fill{position:absolute;left:0;top:0;bottom:0;width:1%;background:linear-gradient(90deg,rgba(125,231,255,.28),rgba(246,214,111,.38));box-shadow:0 0 12px rgba(125,231,255,.24);transition:width .18s ease}.atlas-progress #atlas-progress-text{position:absolute;right:12px;top:6px;color:rgba(220,238,255,.54);font-size:10px;letter-spacing:.02em;text-shadow:0 1px 6px rgba(0,0,0,.4)}

@media(max-width:680px){.hudbar{gap:7px}.toolbar{padding:6px 7px;gap:6px}.toolbar button{padding:7px 9px}.limit-label{font-size:11px}.limit-label select{padding:5px 6px}#search{font-size:13px;padding:9px 10px}.guide-body{width:min(360px,calc(100vw - 24px));max-height:52vh;overflow:auto}.detail{left:8px;right:8px;top:112px;bottom:8px;width:auto;padding:14px}.grid{grid-template-columns:112px 1fr;font-size:12px}.tooltip{display:none!important}}

/* v21 performance containment: keep HUD/detail layout work from invalidating the canvas path. */
#atlas{contain:strict;cursor:grab;}
#atlas:active{cursor:grabbing;}
.hudbar,.toolbar,.search-wrap,.detail,.tooltip{contain:layout style paint;}
#search-results,.members,.tablewrap,.detail{overscroll-behavior:contain;}

/* v25 revised: selected-star marker.  The selected star stays fixed;
   only the four inward-facing cursor ticks orbit around it.  There is no
   additional center dot. */
.selection-marker {
  position: fixed;
  left: var(--sel-x, -9999px);
  top: var(--sel-y, -9999px);
  width: var(--sel-size, 34px);
  height: var(--sel-size, 34px);
  pointer-events: none;
  z-index: 4;
  opacity: 0;
  transform: translate(-50%, -50%);
  will-change: left, top, opacity;
  contain: layout paint style;
  filter: drop-shadow(0 0 7px rgba(255,255,255,0.50));
}
.selection-marker.visible { opacity: 1; }
.selection-orbit {
  position: absolute;
  inset: 0;
  transform-origin: 50% 50%;
  animation: ec-selected-orbit 6.8s linear infinite;
  will-change: transform;
}
.selection-tick {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 23%;
  height: max(1.5px, 4.6%);
  border-radius: 999px;
  background: rgba(255,255,255,0.94);
  box-shadow: 0 0 7px rgba(255,255,255,0.50);
  transform-origin: 0 50%;
}
.selection-tick.t0 { transform: rotate(0deg) translate(calc(var(--sel-size, 34px) * 0.29), -50%) rotate(180deg); }
.selection-tick.t1 { transform: rotate(90deg) translate(calc(var(--sel-size, 34px) * 0.29), -50%) rotate(180deg); }
.selection-tick.t2 { transform: rotate(180deg) translate(calc(var(--sel-size, 34px) * 0.29), -50%) rotate(180deg); }
.selection-tick.t3 { transform: rotate(270deg) translate(calc(var(--sel-size, 34px) * 0.29), -50%) rotate(180deg); }
@keyframes ec-selected-orbit {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* v23: tiny version indicator for deployment sanity checks. */
.version-badge{position:fixed;right:10px;bottom:8px;z-index:3;color:rgba(210,229,255,.46);font-size:10px;letter-spacing:.05em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:rgba(4,8,20,.34);border:1px solid rgba(160,190,255,.12);border-radius:999px;padding:3px 7px;pointer-events:none;backdrop-filter:blur(8px);contain:layout style paint}
@media(max-width:680px){.version-badge{right:8px;bottom:calc(6px + env(safe-area-inset-bottom));font-size:9px;opacity:.78}}

/* v25: WebGL rollback keeps the stable Canvas 2D star field.  Detail blocks
   are stacked so the richer Q-isogeny class card and the compact C-isogeny
   card both keep enough horizontal space. */
.detail-stack{display:flex;flex-direction:column;gap:10px}.members-rich{max-height:360px}.member-rich{display:block;line-height:1.35;padding:9px 10px}.member-rich b{display:block;margin-bottom:3px}.member-rich .muted{display:block;margin-bottom:6px}.member-grid{display:grid;grid-template-columns:112px 1fr;gap:3px 8px;align-items:start}.member-grid .code{font-size:11px}.ciso-list{max-height:220px}.ciso-compact{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:8px 10px;line-height:1.25}.ciso-compact .relation{margin-left:8px;color:#dcecff;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:11.5px}.two-col{grid-template-columns:1fr}
@media(max-width:680px){.member-grid{grid-template-columns:96px 1fr}.ciso-compact{white-space:normal}.ciso-compact .relation{display:block;margin-left:0;margin-top:2px}}

/* v26: larger, clearer selection cursor. Four inward-facing cursors orbit the
   selected star; there is no extra center dot. */
.selection-marker {
  filter: drop-shadow(0 0 10px rgba(255,255,255,0.66));
}
.selection-orbit {
  animation-duration: 7.8s;
}
.selection-tick {
  width: 28%;
  height: max(2px, 5.2%);
  box-shadow: 0 0 10px rgba(255,255,255,0.62);
}
.selection-tick.t0 { transform: rotate(0deg) translate(calc(var(--sel-size, 58px) * 0.38), -50%) rotate(180deg); }
.selection-tick.t1 { transform: rotate(90deg) translate(calc(var(--sel-size, 58px) * 0.38), -50%) rotate(180deg); }
.selection-tick.t2 { transform: rotate(180deg) translate(calc(var(--sel-size, 58px) * 0.38), -50%) rotate(180deg); }
.selection-tick.t3 { transform: rotate(270deg) translate(calc(var(--sel-size, 58px) * 0.38), -50%) rotate(180deg); }

/* v26: hover card appears only after a 500ms stationary hover and is more
   transparent so it does not cover the local star field. */
.tooltip{
  background:rgba(5,10,25,.72);
  border-color:rgba(160,190,255,.18);
  box-shadow:0 14px 42px rgba(0,0,0,.36);
  backdrop-filter:blur(9px);
  opacity:.88;
}

/* v26: search and C-isogeny result areas are taller and easier to read. */
.search-wrap{max-width:min(760px,calc(100vw - 24px));}
#search-results{
  max-height:min(52vh,460px);
  background:rgba(5,10,25,.965);
  z-index:10;
}
.result{padding:9px 11px;line-height:1.35;}
.result small{line-height:1.35;}
.ciso-list{max-height:420px;}
.members-rich{max-height:440px;}
.detail{width:min(520px,calc(100vw - 32px));}

@media(max-width:680px){
  #search-results{max-height:42vh;}
  .ciso-list{max-height:320px;}
  .members-rich{max-height:340px;}
}


/* v27: search dropdown must be allowed to paint outside the search wrapper. */
.hudbar{overflow:visible;}
.search-wrap{contain:layout style;overflow:visible;z-index:20;}
#search-results{min-height:56px;box-shadow:0 18px 60px rgba(0,0,0,.48);}

/* v27: C-isogeny neighbours now use full rich cards, matching the Q-isogeny class list. */
.ciso-list{max-height:520px;gap:8px;}
.ciso-rich{white-space:normal;overflow:visible;text-overflow:clip;padding:10px 11px;line-height:1.35;}
.ciso-rich .relation{display:block;margin:4px 0 7px 0;color:#ffe5b7;font-size:11.5px;white-space:normal;}
.ciso-rich .member-grid{margin-top:3px;}
@media(max-width:680px){.ciso-list{max-height:360px;}}

/* v28: remove the redundant outer search frame and render results as a fixed
   body-level overlay so HUD containment can never clip the dropdown. */
.search-wrap{
  border:0!important;
  background:transparent!important;
  box-shadow:none!important;
  backdrop-filter:none!important;
  padding:0!important;
  overflow:visible!important;
  contain:layout style!important;
  max-width:min(980px,calc(100vw - 24px));
}
#search{
  padding:15px 18px;
  font-size:22px;
  border-radius:18px;
  border-color:rgba(160,190,255,.28);
  background:rgba(3,7,18,.74);
  box-shadow:0 14px 45px rgba(0,0,0,.30), inset 0 0 0 1px rgba(255,255,255,.025);
}
#search-results{
  position:fixed!important;
  left:12px;
  top:70px;
  right:auto!important;
  width:min(920px,calc(100vw - 24px));
  min-height:0;
  max-height:min(56vh,520px);
  overflow:auto;
  z-index:60;
  padding:8px;
  border-radius:16px;
  background:rgba(5,10,25,.985);
  border:1px solid rgba(160,190,255,.32);
  box-shadow:0 24px 80px rgba(0,0,0,.68);
  contain:none!important;
}
.result{padding:11px 13px;font-size:14px;line-height:1.38;}
.result b{font-size:15px;}
.result small{font-size:12px;line-height:1.35;}

/* v28: C-isogeny neighbours are compact one-line entries: label + tau transform. */
.ciso-list{max-height:360px;gap:5px;}
.ciso-line{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 10px;
  min-height:34px;
  line-height:1.15;
  white-space:nowrap;
  overflow:hidden;
  border-color:rgba(255,211,145,.24);
  background:linear-gradient(180deg,rgba(255,211,145,.055),rgba(125,231,255,.025));
}
.ciso-line b{display:inline-block;flex:0 0 auto;margin:0;font-size:13px;}
.ciso-line .relation{display:inline-block;min-width:0;overflow:hidden;text-overflow:ellipsis;margin:0;color:#ffe5b7;font-size:12px;}
@media(max-width:680px){
  #search{font-size:17px;padding:12px 14px;border-radius:15px;}
  #search-results{max-height:44vh;}
  .ciso-line{white-space:normal;align-items:flex-start;flex-direction:column;gap:3px;}
}

/* v29: simplify the search bar structure so only one frame remains around the
   input, while the result list stays as a body-level fixed overlay. */
.atlas-search{
  flex:1;
  width:min(980px,calc(100vw - 24px));
  max-width:min(980px,calc(100vw - 24px));
  padding:15px 18px;
  font-size:22px;
  border-radius:18px;
  border:1px solid rgba(160,190,255,.28);
  outline:none;
  background:rgba(3,7,18,.74);
  color:var(--text);
  box-shadow:0 14px 45px rgba(0,0,0,.30), inset 0 0 0 1px rgba(255,255,255,.025);
}
.atlas-search::placeholder{color:rgba(216,232,255,.62)}
#search-results{
  position:fixed!important;
  left:12px;
  top:70px;
  right:auto!important;
  width:min(920px,calc(100vw - 24px));
  min-height:0;
  max-height:min(56vh,520px);
  overflow:auto;
  z-index:60;
  padding:8px;
  border-radius:16px;
  background:rgba(5,10,25,.985);
  border:1px solid rgba(160,190,255,.32);
  box-shadow:0 24px 80px rgba(0,0,0,.68);
  contain:none!important;
}
.result{padding:11px 13px;font-size:14px;line-height:1.38;}
.result b{font-size:15px;}
.result small{font-size:12px;line-height:1.35;}

/* v29: the compact one-line C-isogeny list can scroll through all results. */
.ciso-list{max-height:520px;gap:5px;}
.ciso-line{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 10px;
  min-height:34px;
  line-height:1.15;
  white-space:nowrap;
  overflow:hidden;
  border-color:rgba(255,211,145,.24);
  background:linear-gradient(180deg,rgba(255,211,145,.055),rgba(125,231,255,.025));
}
.ciso-line b{display:inline-block;flex:0 0 auto;margin:0;font-size:13px;}
.ciso-line .relation{display:inline-block;min-width:0;overflow:hidden;text-overflow:ellipsis;margin:0;color:#ffe5b7;font-size:12px;}

/* v29: keep search usable and unclipped on small screens too. */
@media(max-width:680px){
  .atlas-search{font-size:17px;padding:12px 14px;border-radius:15px;max-width:calc(100vw - 16px);width:calc(100vw - 16px);}
  #search-results{max-height:44vh;left:8px;width:calc(100vw - 16px);}
  .ciso-line{white-space:normal;align-items:flex-start;flex-direction:column;gap:3px;}
}

/* v29 containment update: the standalone search input replaces the old wrapper. */
.hudbar,.toolbar,.detail,.tooltip,.atlas-search{contain:layout style paint;}


/* v31: make search UI more proportional while keeping the v29/v30 fixed-overlay behavior. */
.atlas-search{
  padding:11px 14px!important;
  font-size:17px!important;
  border-radius:14px!important;
  max-width:min(780px,calc(100vw - 24px))!important;
}
#search-results{
  width:min(720px,calc(100vw - 24px))!important;
  max-height:min(46vh,420px)!important;
  padding:6px!important;
  border-radius:13px!important;
}
.result{padding:8px 10px!important;font-size:12.5px!important;line-height:1.30!important;}
.result b{font-size:13.5px!important;}
.result small{font-size:11px!important;line-height:1.28!important;}

/* v31: narrower, lighter detail panel so it blocks less of the star map. */
.detail{
  width:min(430px,calc(100vw - 32px))!important;
  background:rgba(5,10,25,.72)!important;
  border-color:rgba(160,190,255,.18)!important;
  box-shadow:0 20px 70px rgba(0,0,0,.42)!important;
  backdrop-filter:blur(14px)!important;
}
.card{
  background:rgba(255,255,255,.026)!important;
  border-color:rgba(160,190,255,.115)!important;
}
.grid{grid-template-columns:118px 1fr!important;}
.member-grid{grid-template-columns:98px 1fr!important;}

@media(max-width:680px){
  .atlas-search{font-size:15px!important;padding:10px 12px!important;max-width:calc(100vw - 16px)!important;width:calc(100vw - 16px)!important;}
  #search-results{width:calc(100vw - 16px)!important;max-height:40vh!important;}
  .detail{left:8px;right:8px;width:auto!important;background:rgba(5,10,25,.78)!important;}
}

/* v37: keep the detail panel above all atlas drawing overlays. */
.detail{z-index:80!important;}
.selection-marker{z-index:2!important;}
.tooltip{z-index:20!important;}