/* ============================================
   THE PARTICLE LAB — page-scoped styles
   Reuses the site's palette (--accent/--accent2/--accent3/--gold)
   and fonts (DM Serif Display / DM Sans / DM Mono) from main.css.
   ============================================ */

#labApp{
  --lab-font-display:'DM Serif Display', serif;
  --lab-font-body:'DM Sans', sans-serif;
  --lab-font-mono:'DM Mono', monospace;
  position:relative;z-index:1;display:flex;
  padding-top:88px;height:100vh;
  font-family:var(--lab-font-body);
}
#labApp *{box-sizing:border-box}
#labApp button{font-family:inherit;cursor:pointer}
#labApp input,#labApp select,#labApp textarea{font-family:inherit}

/* -------- sidebar -------- */
#labSidebar{
  width:248px;flex:0 0 248px;display:flex;flex-direction:column;
  padding:18px 14px;gap:4px;
  background:linear-gradient(180deg, var(--bg2), var(--surface) 70%, var(--bg));
  border-right:1px solid var(--border);
  box-shadow:8px 0 30px rgba(0,0,0,.35)}
#labBrand{display:flex;align-items:center;gap:10px;padding:6px 8px 18px}
#labBrand .orb{width:42px;height:42px;border-radius:50%;
  background:radial-gradient(circle at 30% 28%, #dff3ee, var(--accent) 45%, #12504a);
  box-shadow:0 0 18px rgba(77,184,184,.55), 0 0 44px rgba(77,184,184,.22);
  display:grid;place-items:center;font-size:20px}
#labBrand h1{font-family:var(--lab-font-display);font-size:1.1rem;letter-spacing:.03em;line-height:1.15;font-weight:400;color:var(--text)}
#labBrand h1 small{display:block;font-family:var(--lab-font-mono);font-size:.58rem;color:var(--text-dim);letter-spacing:.16em;text-transform:uppercase;margin-top:3px}
.lab-navbtn{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  background:transparent;border:1px solid transparent;color:var(--text-dim);
  padding:11px 12px;border-radius:10px;font-size:.9rem;font-weight:500;letter-spacing:.01em;
  transition:all .22s ease;position:relative}
.lab-navbtn .ic{font-size:1.05rem;filter:saturate(.6) brightness(.9);transition:filter .2s}
.lab-navbtn:hover{color:var(--text);background:rgba(77,184,184,.07);border-color:rgba(77,184,184,.15)}
.lab-navbtn.active{
  color:var(--bg);
  background:linear-gradient(100deg, var(--accent), #7ecfcf 60%, var(--accent3));
  box-shadow:0 0 16px rgba(77,184,184,.35), inset 0 0 0 1px rgba(255,255,255,.25)}
.lab-navbtn.active .ic{filter:none}
#labSidebar .foot{margin-top:auto;padding:10px 8px;font-size:.68rem;color:var(--text-dim);font-family:var(--lab-font-mono);line-height:1.6}
#labSidebar .foot b{color:var(--accent);font-weight:700}

/* -------- main panels -------- */
#labMain{flex:1;overflow-y:auto;padding:26px 30px 90px;scroll-behavior:smooth}
#labMain::-webkit-scrollbar{width:10px}
#labMain::-webkit-scrollbar-thumb{background:var(--border);border-radius:8px}
#labMain .lab-panel{display:none;animation:labSwim .45s ease;padding:0;border-top:none;position:static;z-index:auto}
#labMain .lab-panel.active{display:block}
@keyframes labSwim{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.lab-panel-head{margin-bottom:18px}
.lab-panel-head h2{font-family:var(--lab-font-display);font-weight:400;font-size:1.9rem;letter-spacing:.02em;
  background:linear-gradient(90deg,var(--text), var(--accent) 55%, var(--accent3));-webkit-background-clip:text;background-clip:text;color:transparent}
.lab-panel-head p{color:var(--text-dim);margin-top:4px;max-width:64ch;font-size:.92rem}

/* -------- cards & controls -------- */
#labApp .card{
  background:linear-gradient(160deg, rgba(255,255,255,.03), var(--surface) 85%);
  border:1px solid var(--border);
  border-radius:14px;padding:16px 18px;
  box-shadow:0 10px 30px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.03);
  position:relative}
#labApp .card.accented::before{content:"";position:absolute;inset:-1px;border-radius:15px;padding:1px;pointer-events:none;
  background:linear-gradient(160deg, rgba(77,184,184,.5), rgba(155,137,196,.28), rgba(124,159,201,.4));
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude}
#labApp .card h3{font-family:var(--lab-font-display);font-weight:400;font-size:1.06rem;color:var(--accent);margin-bottom:10px;letter-spacing:.02em}
.lab-grid{display:grid;gap:16px}
.lab-g2{grid-template-columns:2fr 1fr}
.lab-g11{grid-template-columns:1fr 1fr}
@media (max-width:1050px){.lab-g2,.lab-g11{grid-template-columns:1fr}}

#labApp label.ctl{display:block;font-size:.74rem;font-family:var(--lab-font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin:12px 0 5px}
#labApp label.ctl output{color:var(--gold);float:right;text-transform:none}
#labApp input[type=range]{width:100%;appearance:none;height:6px;border-radius:6px;
  background:linear-gradient(90deg,var(--accent),var(--accent3));outline:none}
#labApp input[type=range]::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;
  background:radial-gradient(circle at 32% 30%, #fff, var(--accent2));
  box-shadow:0 0 10px rgba(124,159,201,.7);border:none;cursor:pointer}
#labApp select,#labApp input[type=text],#labApp input[type=number],#labApp textarea{
  width:100%;background:var(--bg);border:1px solid var(--border);color:var(--text);
  border-radius:8px;padding:9px 11px;font-size:.9rem;outline:none;transition:border .2s}
#labApp select:focus,#labApp input:focus,#labApp textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(77,184,184,.15)}

.lab-btn{
  display:inline-flex;align-items:center;gap:7px;
  background:linear-gradient(100deg, var(--accent), #6fc9c9);
  color:#04222b;border:none;font-weight:700;font-size:.84rem;letter-spacing:.01em;
  padding:9px 18px;border-radius:10px;
  box-shadow:0 4px 14px rgba(77,184,184,.3);transition:all .18s ease}
.lab-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(77,184,184,.45)}
.lab-btn:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.lab-btn.ghost{background:transparent;color:var(--accent);border:1px solid rgba(77,184,184,.5);box-shadow:none}
.lab-btn.accent2{background:linear-gradient(100deg,var(--accent2),#a7c0e0);color:#0f1c2e;box-shadow:0 4px 14px rgba(124,159,201,.3)}
.lab-btn.gold{background:linear-gradient(100deg,var(--gold),#e0c58f);color:#3a2c10;box-shadow:0 4px 14px rgba(201,170,113,.3)}
.lab-btn.small{padding:6px 13px;font-size:.76rem}
.lab-btnrow{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}

/* tooltips */
#labApp [data-tip]{position:relative}
#labApp [data-tip]:hover::after{
  content:attr(data-tip);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);
  background:var(--bg);border:1px solid var(--accent);color:var(--text);font-size:.72rem;font-weight:500;
  padding:6px 10px;border-radius:8px;white-space:nowrap;z-index:60;pointer-events:none;
  box-shadow:0 6px 16px rgba(0,0,0,.5)}

/* toast */
#labToast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(80px);z-index:120;
  background:var(--surface);border:1px solid var(--accent);color:var(--text);
  padding:11px 20px;border-radius:12px;font-size:.86rem;font-weight:600;
  box-shadow:0 0 24px rgba(77,184,184,.3);opacity:0;transition:all .35s ease;pointer-events:none}
#labToast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* floating lab notes */
#labLogFab{position:fixed;right:26px;bottom:26px;z-index:110;width:58px;height:58px;border-radius:50%;
  border:none;font-size:24px;display:grid;place-items:center;
  background:radial-gradient(circle at 30% 28%, #dfe6f7, var(--accent2) 55%, #4a5f82);
  box-shadow:0 0 22px rgba(124,159,201,.5), 0 10px 26px rgba(0,0,0,.4);
  transition:transform .2s}
#labLogFab:hover{transform:scale(1.08)}
#labLogModal{position:fixed;inset:0;z-index:115;display:none;place-items:center;background:rgba(2,4,8,.6);backdrop-filter:blur(4px)}
#labLogModal.open{display:grid}
#labLogModal .card{width:min(480px, 92vw)}
#labLogModal textarea{height:110px;resize:vertical;margin-top:6px}
#labQuickLogList{max-height:170px;overflow-y:auto;margin-top:12px;display:flex;flex-direction:column;gap:7px}
.lab-quicknote{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 11px;font-size:.82rem;color:var(--text)}
.lab-quicknote time{display:block;font-family:var(--lab-font-mono);font-size:.62rem;color:var(--gold);margin-bottom:3px}

/* tables */
#labApp table{width:100%;border-collapse:collapse;font-size:.85rem}
#labApp th{font-family:var(--lab-font-mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);
  text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}
#labApp td{padding:8px 10px;border-bottom:1px solid var(--border);color:var(--text)}
#labApp tr:hover td{background:rgba(77,184,184,.05)}

/* particle explorer cards */
#pcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:14px;margin-top:14px}
.lab-pcard{cursor:pointer;transition:transform .18s, box-shadow .18s}
.lab-pcard:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(0,0,0,.4), 0 0 18px rgba(155,137,196,.2)}
.lab-pcard .em{font-size:1.7rem}
.lab-pcard .nm{font-family:var(--lab-font-display);font-size:1.05rem;margin-top:6px;color:var(--text)}
.lab-pcard .sym{font-family:var(--lab-font-mono);color:var(--gold);font-size:.8rem}
.lab-pcard .meta{font-size:.74rem;color:var(--text-dim);margin-top:7px;line-height:1.55}
.lab-tag{display:inline-block;font-size:.62rem;font-family:var(--lab-font-mono);letter-spacing:.06em;text-transform:uppercase;
  border:1px solid;border-radius:999px;padding:2px 9px;margin-top:8px}
.lab-tag.lepton{color:var(--accent);border-color:var(--accent)}
.lab-tag.quark{color:var(--accent2);border-color:var(--accent2)}
.lab-tag.boson{color:var(--gold);border-color:var(--gold)}
.lab-tag.hadron{color:var(--accent3);border-color:var(--accent3)}

/* decay tree */
#decayTree{min-height:300px}
.lab-dnode{display:inline-flex;flex-direction:column;align-items:center;gap:3px;
  background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:9px 15px;
  animation:labSwim .5s ease}
.lab-dnode .sym{font-family:var(--lab-font-mono);color:var(--accent);font-weight:700}
.lab-dnode .br{font-size:.66rem;color:var(--gold);font-family:var(--lab-font-mono)}
.lab-dlevel{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:8px}
.lab-dlink{text-align:center;color:var(--accent3);font-size:1.05rem;line-height:1}
.lab-brbar{height:10px;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--accent3));
  box-shadow:0 0 8px rgba(77,184,184,.35);min-width:2px}
.lab-brrow{display:grid;grid-template-columns:120px 1fr 66px;align-items:center;gap:10px;margin:7px 0;font-size:.82rem}
.lab-brrow .lbl{font-family:var(--lab-font-mono);color:var(--text)}
.lab-brrow .pct{font-family:var(--lab-font-mono);color:var(--gold);text-align:right}

/* feynman canvas */
#feyncanvas{background:radial-gradient(700px 400px at 50% 30%, rgba(77,184,184,.12), var(--bg) 85%);
  border-radius:12px;border:1px solid var(--border);cursor:crosshair;touch-action:none;width:100%;display:block}
.lab-toolbtn{background:var(--bg);border:1px solid var(--border);color:var(--text-dim);border-radius:8px;
  padding:7px 12px;font-size:.78rem;font-weight:600;transition:all .15s}
.lab-toolbtn:hover{color:var(--text);border-color:var(--accent)}
.lab-toolbtn.on{background:linear-gradient(100deg,var(--accent3),#c0aee0);color:#160a33;border-color:transparent;
  box-shadow:0 0 12px rgba(155,137,196,.45)}

/* collision viewer */
#threeWrap{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--border);
  background:var(--bg);height:480px}
#threeWrap canvas{display:block}
#labHud{position:absolute;z-index:5;top:10px;left:12px;font-family:var(--lab-font-mono);font-size:.68rem;color:var(--accent);
  background:rgba(10,12,15,.6);padding:7px 11px;border-radius:8px;border:1px solid var(--border);line-height:1.7}
#loading3d{position:absolute;z-index:4;inset:0;display:grid;place-items:center;color:var(--accent);font-family:var(--lab-font-mono);font-size:.8rem;letter-spacing:.15em}

/* notebook */
#noteArea{min-height:220px;background:var(--bg);border:1px solid var(--border);border-radius:10px;
  padding:14px 16px;font-size:.92rem;line-height:1.7;outline:none;color:var(--text)}
#noteArea:focus{border-color:var(--accent)}
#noteArea:empty::before{content:"Record hypotheses, cuts, and observations here… (autosaves)";color:var(--text-dim)}

/* stat chips */
.lab-stat{display:inline-flex;flex-direction:column;gap:2px;background:var(--bg);border:1px solid var(--border);
  border-radius:10px;padding:9px 14px;min-width:110px}
.lab-stat b{font-family:var(--lab-font-mono);color:var(--gold);font-size:1.02rem}
.lab-stat span{font-size:.64rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim);font-family:var(--lab-font-mono)}
.lab-statrow{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}

/* fullscreen mode */
#massChartWrap{position:relative;height:340px}
.lab-fsbtn{position:absolute;top:12px;right:12px;z-index:9;width:36px;height:36px;border-radius:9px;
  background:var(--bg);border:1px solid var(--border);color:var(--accent);font-size:16px;
  display:grid;place-items:center;transition:all .15s;line-height:1}
.lab-fsbtn:hover{border-color:var(--accent);box-shadow:0 0 12px rgba(77,184,184,.4);transform:scale(1.07)}
.lab-fsbtn:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
#labApp .card:fullscreen{border-radius:0;overflow-y:auto;padding:30px 44px;background:var(--bg)}
#labApp .card:fullscreen::before{display:none}
#labApp .card:fullscreen #threeWrap{height:calc(100vh - 170px)}
#labApp .card:fullscreen #feyncanvas{height:calc(100vh - 210px);width:auto;max-width:100%;margin:0 auto;display:block}
#labApp .card:fullscreen #massChartWrap{height:calc(100vh - 190px)}
#labApp .card:fullscreen #decayTree{min-height:calc(100vh - 130px);display:flex;flex-direction:column;justify-content:center;font-size:1.08rem}
#labApp .card:fullscreen .lab-dnode .sym{font-size:1.15rem}
#labApp .card:fullscreen .lab-evtscroll{max-height:calc(100vh - 330px) !important}
#labApp .card:fullscreen table{font-size:1rem}

@media (max-width:820px){
  #labSidebar{width:74px;flex-basis:74px;padding:14px 8px}
  #labBrand h1,.lab-navbtn .lbl,#labSidebar .foot{display:none}
  .lab-navbtn{justify-content:center;padding:12px 0;border-radius:10px}
  #labMain{padding:18px 14px 90px}
}
@media (max-width:640px){
  #labApp{flex-direction:column;height:auto;padding-top:80px}
  #labSidebar{width:100%;flex-basis:auto;flex-direction:row;flex-wrap:wrap;border-right:none;border-bottom:1px solid var(--border)}
  #labBrand{display:none}
  #labMain{height:auto}
  .lab-navbtn{width:auto;flex:1 0 auto}
}