/* ============================================================
   EDIT · RLHF  —  ZAP70 medchem preference collection
   Aesthetic: warm chemistry-journal / lab-notebook.
   Cream paper canvas, ink line-art, vermilion act-of-choosing,
   teal data accents. Fraunces + Hanken Grotesk + JetBrains Mono.
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Hanken+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --paper:#f1ece1;
  --paper-2:#e7e0d0;
  --card:#fcfbf7;
  --ink:#1c1b17;
  --ink-soft:#6a6457;
  --ink-faint:#9a9283;
  --line:#d8d0be;
  --line-strong:#c3baa4;
  --accent:#d6432a;       /* vermilion — choosing */
  --accent-ink:#a82f1c;
  --teal:#1f6f6b;         /* data / assay */
  --gold:#bf8b2c;
  --good:#2f7d4f;
  --shadow:0 1px 0 rgba(28,27,23,.04), 0 18px 40px -24px rgba(28,27,23,.45);
  --shadow-lift:0 2px 0 rgba(28,27,23,.05), 0 34px 60px -28px rgba(28,27,23,.55);
  --radius:18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:'Hanken Grotesk',system-ui,sans-serif;
  color:var(--ink);
  background:var(--paper);
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(31,111,107,.07), transparent 60%),
    radial-gradient(900px 500px at -5% 110%, rgba(214,67,42,.06), transparent 55%);
  -webkit-font-smoothing:antialiased;
}
/* faint paper grain */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
a{color:inherit}
button{font-family:inherit;cursor:pointer}

/* ---------- shell ---------- */
.shell{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:0 28px}

header.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 16px;
}
.brand{display:flex;align-items:baseline;gap:10px}
.brand .mark{
  font-family:'JetBrains Mono',monospace;font-weight:700;letter-spacing:.14em;
  font-size:13px;color:var(--accent);text-transform:uppercase;
}
.brand .sub{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-faint);letter-spacing:.12em}
.cohort{
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--teal);
  background:rgba(31,111,107,.09);border:1px solid rgba(31,111,107,.22);
  padding:6px 12px;border-radius:999px;letter-spacing:.04em;white-space:nowrap;
}
.cohort b{color:var(--teal);font-weight:700}
.userbox{display:flex;align-items:center;gap:14px;font-size:14px;color:var(--ink-soft)}
.userbox .who{font-weight:600;color:var(--ink)}
.userbox a{color:var(--ink-faint);text-decoration:none;font-size:13px;border-bottom:1px dashed var(--line-strong);padding-bottom:1px}
.userbox a:hover{color:var(--accent)}

/* progress */
.progress-wrap{display:flex;align-items:center;gap:14px;margin:2px 0 26px}
.progress-track{flex:1;height:7px;background:var(--paper-2);border-radius:999px;overflow:hidden;border:1px solid var(--line)}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--teal),#2c8f86);
  border-radius:999px;transition:width .5s cubic-bezier(.2,.8,.2,1)}
.progress-count{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--ink-soft);white-space:nowrap}
.progress-count b{color:var(--ink)}
.undo-link{background:transparent;border:1px solid var(--line-strong);border-radius:8px;
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-faint);padding:5px 10px;white-space:nowrap}
.undo-link:hover{color:var(--accent);border-color:var(--accent)}

/* pose-confidence legend */
.pose-legend{display:inline-flex;align-items:center;gap:14px;margin-top:12px;
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-faint)}
.pose-legend .lg{display:inline-flex;align-items:center;gap:6px}
.pose-legend .dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.pose-legend .dot.teal{background:var(--teal)}
.pose-legend .dot.gold{background:var(--gold)}

/* error toast */
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:11px 20px;border-radius:12px;font-size:14px;font-weight:500;
  box-shadow:var(--shadow-lift);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:80}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- prompt ---------- */
.prompt{text-align:center;margin:6px 0 22px}
.prompt h1{
  font-family:'Fraunces',serif;font-weight:600;font-size:clamp(26px,3.4vw,40px);
  line-height:1.05;margin:0;letter-spacing:-.01em;
}
.prompt h1 em{font-style:italic;color:var(--accent)}
.prompt p{margin:8px 0 0;color:var(--ink-soft);font-size:14.5px}

/* ---------- comparison stage ---------- */
.stage{
  display:grid;grid-template-columns:1fr 44px 1fr;align-items:stretch;gap:0;
  transition:opacity .28s ease, transform .28s ease;
}
.stage.swap{opacity:0;transform:translateY(10px)}

.vs{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.vs .line{width:1px;flex:1;background:linear-gradient(var(--line),transparent,var(--line))}
.vs .badge{
  font-family:'Fraunces',serif;font-style:italic;font-weight:600;font-size:19px;color:var(--ink-faint);
  background:var(--paper);border:1px solid var(--line);border-radius:999px;width:46px;height:46px;
  display:flex;align-items:center;justify-content:center;
}

/* card */
.card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
  display:flex;flex-direction:column;overflow:hidden;cursor:pointer;
  transition:transform .18s cubic-bezier(.2,.8,.2,1), box-shadow .18s ease, border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:var(--line-strong)}
.card:focus-visible{outline:none;border-color:var(--teal)}
.card .ribbon{
  position:absolute;top:0;left:0;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:12px;
  color:#fff;background:var(--ink);padding:5px 13px 5px 12px;border-bottom-right-radius:12px;letter-spacing:.1em;
}
.card .cardhead{display:flex;align-items:flex-start;justify-content:space-between;padding:16px 18px 4px;margin-top:6px}
.card .ids{margin-left:auto;text-align:right}
.card .chembl{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--ink-soft);letter-spacing:.02em}
.conf-chip{
  display:inline-flex;align-items:center;gap:6px;margin-top:6px;
  font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--teal);
  background:rgba(31,111,107,.08);border:1px solid rgba(31,111,107,.2);
  padding:3px 8px;border-radius:999px;
}
.conf-chip .dot{width:6px;height:6px;border-radius:50%;background:var(--teal)}
.conf-chip.warn{color:var(--gold);background:rgba(191,139,44,.1);border-color:rgba(191,139,44,.28)}
.conf-chip.warn .dot{background:var(--gold)}

.molbox{flex:1;display:flex;align-items:center;justify-content:center;padding:2px 12px 6px;min-height:300px}
.molbox svg{width:100%;height:100%;max-height:340px}
.molbox.loading{color:var(--ink-faint);font-family:'JetBrains Mono',monospace;font-size:12px;min-height:300px}

.cardfoot{display:flex;align-items:center;gap:10px;padding:12px 16px 16px}
.btn3d{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--teal);
  background:transparent;border:1px solid rgba(31,111,107,.35);border-radius:10px;padding:8px 13px;
  transition:background .15s ease,color .15s ease,border-color .15s;
}
.btn3d:hover{background:var(--teal);color:#fff;border-color:var(--teal)}
.btn3d svg{width:15px;height:15px}
.pick-hint{margin-left:auto;font-size:12px;color:var(--ink-faint);font-family:'JetBrains Mono',monospace}

/* selected state */
.card.selected{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent), var(--shadow-lift);transform:translateY(-4px)}
.card.selected .ribbon{background:var(--accent)}
.stamp{
  position:absolute;top:14px;right:14px;z-index:3;
  font-family:'Fraunces',serif;font-style:italic;font-weight:600;font-size:15px;color:#fff;
  background:var(--accent);border-radius:999px;padding:6px 14px;letter-spacing:.02em;
  transform:scale(.4) rotate(-8deg);opacity:0;transition:transform .26s cubic-bezier(.34,1.56,.64,1),opacity .2s;
  box-shadow:0 8px 20px -8px rgba(214,67,42,.7);
}
.card.selected .stamp{transform:scale(1) rotate(-8deg);opacity:1}
.card.dimmed{opacity:.82}

/* ---------- action bar ---------- */
.actions{display:flex;align-items:center;justify-content:center;gap:16px;margin:30px 0 14px}
.btn{
  border:1px solid var(--line-strong);background:var(--card);color:var(--ink);
  border-radius:12px;padding:13px 22px;font-size:15px;font-weight:600;
  transition:transform .12s ease, box-shadow .15s ease, background .15s, color .15s, border-color .15s;
}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{color:var(--ink-soft);background:transparent}
.btn.ghost:hover{color:var(--ink);border-color:var(--ink-soft)}
.btn.primary{
  background:var(--accent);color:#fff;border-color:var(--accent);
  box-shadow:0 14px 26px -14px rgba(214,67,42,.8);min-width:200px;
}
.btn.primary:hover{background:var(--accent-ink);border-color:var(--accent-ink)}
.btn.primary:disabled{background:var(--paper-2);color:var(--ink-faint);border-color:var(--line);box-shadow:none;cursor:not-allowed;transform:none}

.keyhints{display:flex;justify-content:center;gap:22px;color:var(--ink-faint);font-size:12px;margin-bottom:30px}
.keyhints span{display:inline-flex;align-items:center;gap:7px}
kbd{
  font-family:'JetBrains Mono',monospace;font-size:11px;background:var(--card);border:1px solid var(--line-strong);
  border-bottom-width:2px;border-radius:6px;padding:2px 7px;color:var(--ink-soft);min-width:20px;text-align:center;
}

/* ---------- done overlay ---------- */
.done{
  text-align:center;padding:80px 20px;animation:fade .5s ease;
}
.done .glyph{font-family:'Fraunces',serif;font-size:64px;color:var(--good)}
.done h2{font-family:'Fraunces',serif;font-weight:600;font-size:34px;margin:10px 0 6px}
.done p{color:var(--ink-soft);font-size:15px}
.done .tally{font-family:'JetBrains Mono',monospace;color:var(--teal);font-size:14px;margin-top:18px}

/* ---------- 3D modal ---------- */
.modal-back{
  position:fixed;inset:0;z-index:50;background:rgba(20,19,16,.55);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;padding:24px;
}
.modal-back.open{display:flex;animation:fade .2s ease}
.modal{
  width:min(900px,96vw);background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-lift);color:var(--ink);
}
.modal .mhead{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.modal .mhead h3{margin:0;font-family:'Fraunces',serif;font-weight:600;font-size:18px;color:var(--ink)}
.modal .mhead .x{background:transparent;border:0;color:var(--ink-faint);font-size:22px;line-height:1}
.modal .mhead .x:hover{color:var(--accent)}
.mtabs{display:flex;gap:6px;padding:12px 20px 0}
.mtab{
  font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-soft);background:var(--paper-2);border:1px solid var(--line);
  border-radius:9px 9px 0 0;padding:8px 14px;border-bottom:none;
}
.mtab.active{color:var(--ink);background:var(--card);border-color:var(--line-strong)}
.mtab .pIC{color:var(--gold)}
.pose-controls{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:10px 20px;border-bottom:1px solid var(--line);background:var(--paper)}
.pose-controls label{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-soft);cursor:pointer;user-select:none}
.pose-controls input[type=checkbox]{accent-color:var(--accent);width:14px;height:14px;cursor:pointer}
.pc-btn{margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-soft);background:var(--card);border:1px solid var(--line-strong);border-radius:8px;padding:6px 12px}
.pc-btn:hover{background:var(--paper-2);color:var(--ink)}
#viewer3d{position:relative;width:100%;height:460px;background:#ffffff}
#glhost{position:absolute;inset:0}
.pose-loading{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;
  color:var(--ink-faint);font-family:'JetBrains Mono',monospace;font-size:12px;background:#ffffff}
.pose-loading.hidden{display:none}
.vhint{padding:10px 20px;font-size:12px;color:var(--ink-faint);font-family:'JetBrains Mono',monospace;border-top:1px solid var(--line);display:flex;gap:18px;flex-wrap:wrap}
.vhint b{color:var(--ink-soft);font-weight:500}
.vlegend{display:inline-flex;align-items:center;gap:6px}
.vlegend i{width:10px;height:10px;border-radius:2px;display:inline-block}

@keyframes fade{from{opacity:0}to{opacity:1}}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;position:relative;z-index:1}
.login-card{
  width:min(440px,94vw);background:var(--card);border:1px solid var(--line);border-radius:22px;
  box-shadow:var(--shadow-lift);padding:40px 38px 34px;
}
.login-card .mark{font-family:'JetBrains Mono',monospace;font-weight:700;letter-spacing:.16em;font-size:12px;color:var(--accent);text-transform:uppercase}
.login-card h1{font-family:'Fraunces',serif;font-weight:600;font-size:30px;line-height:1.1;margin:14px 0 6px;letter-spacing:-.01em}
.login-card h1 em{font-style:italic;color:var(--teal)}
.login-card .lead{color:var(--ink-soft);font-size:14.5px;margin:0 0 26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:12px;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}
.field-tag{display:inline-block;margin-left:6px;font-size:9.5px;font-weight:700;color:var(--teal);
  background:rgba(31,111,107,.1);border:1px solid rgba(31,111,107,.25);border-radius:6px;padding:1px 6px;letter-spacing:.06em;vertical-align:middle}
.field input{
  width:100%;padding:13px 14px;border:1px solid var(--line-strong);border-radius:11px;background:#fff;
  font-family:inherit;font-size:15px;color:var(--ink);transition:border-color .15s, box-shadow .15s;
}
.field input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(31,111,107,.15)}
.login-card .btn.primary{width:100%;margin-top:8px}
.login-err{background:rgba(214,67,42,.08);border:1px solid rgba(214,67,42,.3);color:var(--accent-ink);
  padding:10px 13px;border-radius:10px;font-size:13.5px;margin-bottom:18px}
.login-foot{margin-top:22px;font-size:12px;color:var(--ink-faint);text-align:center;font-family:'JetBrains Mono',monospace;letter-spacing:.02em}

@media(max-width:780px){
  .stage{grid-template-columns:1fr;gap:16px}
  .vs{flex-direction:row;height:36px}
  .vs .line{height:1px;width:auto}
  .keyhints{display:none}
}