/* BioModels AI — shared look for every app on the site.
   Colours, the student-facing side panel and the admin panel follow
   bio101/lib/widgets/cellular_action so the two sites feel like one. */

:root{
  --ink:#22303f;
  --ink-soft:#61707f;
  --ink-faint:#aab3bd;
  --line:#d3dae3;
  --panel:#ffffffee;
  --extra:#eef1f5;
  --accent:#56697f;
  --blue:#1e88e5;
  --blue-soft:#e3ecf7;
  --good:#2e7d32;
  --bad:#c62828;
  --canvas:#f7f9fb;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0;background:var(--extra)}
body{font-family:"Inter","Helvetica Neue",Arial,system-ui,sans-serif;color:var(--ink);-webkit-font-smoothing:antialiased}
.bm-app{display:flex;width:100%;height:100vh;overflow:hidden}
.bm-canvas{position:relative;flex:1 1 auto;min-width:0;height:100%;overflow:hidden;background:var(--canvas)}
.bm-canvas > svg{display:block;position:absolute;inset:0;width:100%;height:100%;touch-action:none}

/* ---- student-facing side panel ---- */
.bio{flex:0 0 340px;width:340px;height:100%;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden;z-index:10;position:relative}
.bio-scroll{flex:1;min-height:0;overflow:auto;padding:14px 16px 16px}
.bio h1{margin:0 0 4px;font-size:16px;font-weight:700;letter-spacing:.01em;display:flex;align-items:center;gap:8px}
.bio h1 a.home{color:var(--ink-faint);text-decoration:none;font-weight:600;font-size:12px}
.bio h1 a.home:hover{color:var(--ink)}
.bio .lead{margin:0 0 14px;font-size:11.5px;line-height:1.45;color:var(--ink-soft)}
.bio .adminlink{margin-top:22px;appearance:none;border:none;background:transparent;cursor:pointer;font:inherit;font-size:11.5px;color:var(--ink-faint);padding:6px 0;text-align:left}
.bio .adminlink:hover{color:var(--ink-soft);text-decoration:underline}
.bm-embed .adminlink{display:none}
.subhead{margin:18px 0 8px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);display:flex;align-items:center;gap:8px}
.subhead:first-child{margin-top:0}
.subhead .grow{flex:1}
.keyhint{margin-top:10px;font-size:10.5px;color:var(--ink-faint);line-height:1.5}
.keyhint kbd{font:inherit;border:1px solid var(--line);border-radius:3px;padding:0 4px;background:#fff;color:var(--ink-soft)}
.note{font-size:11px;color:var(--ink-soft);line-height:1.45}
.muted{color:var(--ink-soft)}

/* ---- buttons & inputs ---- */
.btn{appearance:none;font:inherit;font-size:11.5px;font-weight:600;cursor:pointer;color:var(--ink);background:#fff;border:1px solid var(--accent);border-radius:3px;padding:7px 12px;display:inline-flex;align-items:center;gap:6px;justify-content:center}
.btn:hover{background:var(--extra)}
.btn:disabled{opacity:.45;cursor:default}
.btn.ghost{border-color:var(--line);color:var(--ink-soft)}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:#44566b}
.btn.sm{padding:4px 8px;font-size:11px}
.btn.danger{border-color:#e3b6b6;color:var(--bad)}
.btnrow{display:flex;gap:6px;align-items:center;margin-bottom:10px;flex-wrap:wrap}
.btnrow .note{font-size:11px}
input[type=text],input[type=search],input[type=number],input[type=url],select,textarea{font:inherit;font-size:12px;color:var(--ink);border:1px solid var(--line);border-radius:3px;padding:6px 8px;background:#fff;width:100%}
input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.xbtn{appearance:none;border:none;background:transparent;cursor:pointer;color:var(--ink-soft);font:inherit;font-size:18px;line-height:1;padding:2px 6px;border-radius:3px}
.xbtn:hover{color:var(--ink);background:var(--extra)}

/* ---- admin panel (left overlay, vertical menu) ---- */
.panel{position:fixed;left:0;top:0;width:430px;height:100%;background:var(--panel);border:1px solid var(--line);border-radius:3px;backdrop-filter:blur(6px);display:none;flex-direction:column;overflow:hidden;z-index:40}
.panel.open{display:flex}
.panel-title{flex:0 0 auto;padding:9px 10px 8px 16px;font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--ink);border-bottom:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:space-between;gap:10px}
.panel-body{flex:1;min-height:0;display:flex;align-items:stretch}
.menu{flex:0 0 118px;display:flex;flex-direction:column;border-right:1px solid var(--line);padding:8px 0;background:rgba(238,241,245,.6);overflow:auto}
.menu button{appearance:none;border:none;background:transparent;cursor:pointer;text-align:left;font:inherit;font-size:11.5px;font-weight:600;letter-spacing:.01em;color:var(--ink-soft);padding:9px 10px 9px 14px;border-left:2px solid transparent;overflow-wrap:anywhere}
.menu button:hover{color:var(--ink)}
.menu button.active{color:var(--ink);border-left-color:var(--accent);background:#fff}
.menu .spacer{flex:1}
.content{flex:1;min-width:0;overflow:auto;padding:14px 16px 14px}
.tabpanel{display:none}
.tabpanel.active{display:block}
.panel p.sub{margin:0 0 14px;font-size:11.5px;line-height:1.45;color:var(--ink-soft)}
.field{margin-bottom:12px}
.field > label,.field .lbl{display:flex;justify-content:space-between;align-items:baseline;font-size:11.5px;color:var(--ink-soft);margin-bottom:5px;gap:8px}
.field label b{font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;font-size:12px}
.field .help{font-size:10.5px;color:var(--ink-faint);margin-top:3px;line-height:1.4}
.check{display:flex;align-items:flex-start;gap:7px;font-size:12px;color:var(--ink);cursor:pointer;margin:0 0 9px;line-height:1.35}
.check input{accent-color:var(--accent);margin:2px 0 0}
.check small{display:block;color:var(--ink-faint);font-size:10.5px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:16px;background:transparent;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--line)}
input[type=range]::-moz-range-track{height:2px;background:var(--line)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:13px;height:13px;border-radius:50%;background:#fff;border:1.5px solid var(--accent);margin-top:-5.5px;cursor:grab}
input[type=range]::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:#fff;border:1.5px solid var(--accent);cursor:grab}
input[type=color]{-webkit-appearance:none;appearance:none;width:100%;height:30px;border:1px solid var(--line);border-radius:3px;padding:2px;background:#fff;cursor:pointer}
input[type=color]::-webkit-color-swatch-wrapper{padding:0}
input[type=color]::-webkit-color-swatch{border:none;border-radius:2px}
input[type=color]::-moz-color-swatch{border:none;border-radius:2px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:4px 12px}
.readout{border-top:1px solid var(--line);padding-top:10px;margin-top:12px;font-size:11.5px;line-height:1.75;color:var(--ink-soft)}
.readout div{display:flex;justify-content:space-between;gap:12px}
.readout span{color:var(--ink);font-variant-numeric:tabular-nums;text-align:right}
textarea.out{min-height:260px;resize:vertical;font:11px/1.45 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre}

/* ---- floating canvas toolbar ---- */
.toolbar{position:absolute;top:12px;right:12px;display:flex;gap:4px;z-index:20;background:#fffc;border:1px solid var(--line);border-radius:4px;padding:4px;backdrop-filter:blur(4px)}
.toolbar button{appearance:none;border:1px solid transparent;background:transparent;border-radius:3px;min-width:28px;height:28px;font:inherit;font-size:12px;font-weight:700;color:var(--ink-soft);cursor:pointer;padding:0 6px}
.toolbar button:hover{background:var(--extra);color:var(--ink)}
.toolbar button.on{border-color:var(--accent);color:var(--ink);background:#fff}
.toolbar .sep{width:1px;background:var(--line);margin:2px 3px}
.scale{position:absolute;left:18px;bottom:16px;font-size:11px;color:var(--ink-soft);pointer-events:none}
.scale .bar{height:1px;background:var(--ink-soft);position:relative;margin-bottom:5px}
.scale .bar::before,.scale .bar::after{content:"";position:absolute;top:-3px;width:1px;height:7px;background:var(--ink-soft)}
.scale .bar::before{left:0}.scale .bar::after{right:0}
.toast{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);background:#22303f;color:#fff;font-size:12px;padding:7px 12px;border-radius:4px;opacity:0;transition:opacity .25s;pointer-events:none;z-index:50;max-width:80%}
.toast.on{opacity:.92}

@media (max-width:760px){
  .bm-app{flex-direction:column;height:auto;min-height:100vh}
  .bio{flex:0 0 auto;width:100%;height:auto;max-height:48vh;border-right:none;border-bottom:1px solid var(--line)}
  .bm-canvas{height:58vh;flex:0 0 58vh}
  .panel{width:100%;height:auto;max-height:70vh}
  .menu{flex-basis:88px}
  .scale{display:none}
}