/* The Floor of the Great Lakes -- shared styling for the five lake pages.
   Paired with floor.js; each lake's index.html is a shell that sets window.LAKE. */

:root{
  --paper:#0b1020;--surface:#131a2e;--ink:#e4e8f2;--muted:#98a2ba;--line:#26304a;
  --water:#5ba8d4;--gold:#e8c85a;--sand:#f7e4b0;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 34px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:"Public Sans",system-ui,sans-serif;
  display:flex;flex-direction:column;min-height:100vh;overflow-x:hidden}

header{padding:16px clamp(16px,4vw,34px) 14px;border-bottom:1px solid var(--line);background:var(--surface)}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);margin:0 0 6px}
.eyebrow a{color:inherit;text-decoration:none;border-bottom:1px solid transparent}
.eyebrow a:hover{border-bottom-color:currentColor}
.htop{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 18px}
h1{font-family:"Zilla Slab",Georgia,serif;font-weight:700;font-size:clamp(1.5rem,3.6vw,2.3rem);margin:0;
  letter-spacing:-.01em;line-height:1.05}
.stat{font-family:"IBM Plex Mono",monospace;font-size:.95rem;color:var(--gold);font-weight:500;
  border:1px solid color-mix(in srgb,var(--gold) 40%,transparent);border-radius:999px;padding:4px 12px;white-space:nowrap}
.sub{color:var(--muted);font-size:.95rem;margin:8px 0 0;max-width:92ch}
.sub b{color:var(--ink)}

/* ---- the other four lakes ---- */
.lakebar{display:flex;flex-wrap:wrap;gap:6px;margin:11px 0 0}
.lakebar button{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.04em;
  border:1px solid var(--line);border-radius:999px;padding:5px 11px;color:var(--muted);
  background:var(--paper);cursor:pointer}
.lakebar button:hover{border-color:var(--water);color:var(--water)}
.lakebar button[aria-current]{border-color:var(--gold);color:var(--gold);background:color-mix(in srgb,var(--gold) 8%,var(--paper))}

main{flex:1;padding:clamp(12px,2.2vw,22px) clamp(16px,4vw,34px);display:flex;flex-direction:column;gap:16px;
  max-width:1500px;width:100%;margin:0 auto}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.cardhead{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;padding:11px 15px;border-bottom:1px solid var(--line)}
.cardhead h2{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin:0;font-weight:500}
button.tbtn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--paper);
  color:var(--ink);font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.05em;border-radius:8px;
  padding:6px 10px;cursor:pointer}
button.tbtn:hover{border-color:var(--water);color:var(--water)}
button.tbtn.on{border-color:var(--gold);color:var(--gold)}
.spacer{margin-left:auto}

/* ---- map ---- */
.maprow{position:relative}
#map{width:100%;height:clamp(430px,66vh,780px);background:var(--paper)}
#map canvas{outline:none}
.maplibregl-ctrl-attrib{background:rgba(11,16,32,.8)!important;color:var(--muted)!important;font-size:.66rem!important}
.maplibregl-ctrl-attrib a{color:var(--water)!important}
.maplibregl-ctrl-group{background:var(--surface)!important;border:1px solid var(--line)!important;box-shadow:none!important}
.maplibregl-ctrl-group button+button{border-top:1px solid var(--line)!important}
.maplibregl-ctrl button .maplibregl-ctrl-icon{filter:invert(88%)}

.readout{position:absolute;top:12px;left:12px;z-index:5;pointer-events:none;
  background:color-mix(in srgb,var(--paper) 82%,transparent);border:1px solid var(--line);border-radius:11px;
  backdrop-filter:blur(6px);padding:9px 13px;min-width:190px;font-family:"IBM Plex Mono",monospace}
.readout .rk{font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.readout .rv{font-size:1.5rem;font-weight:500;color:var(--gold);line-height:1.15;font-variant-numeric:tabular-nums}
.readout .rv small{font-size:.8rem;color:var(--muted)}
.readout .rc{font-size:.68rem;color:var(--muted);margin-top:3px;font-variant-numeric:tabular-nums}
.readout .rbar{height:5px;border-radius:3px;margin-top:7px;position:relative;overflow:hidden}
.readout .rbar i{position:absolute;top:-2px;width:2px;height:9px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.6)}

.legend{position:absolute;right:12px;bottom:30px;z-index:5;
  background:color-mix(in srgb,var(--paper) 82%,transparent);border:1px solid var(--line);border-radius:11px;
  backdrop-filter:blur(6px);padding:9px 12px 7px;font-family:"IBM Plex Mono",monospace}
.legend .lk{font-size:.58rem;letter-spacing:.15em;text-transform:uppercase;color:var(--gold);margin-bottom:5px}
.legend .lbar{width:min(230px,42vw);height:11px;border-radius:3px;border:1px solid #3a4462}
.legend .lt{display:flex;justify-content:space-between;font-size:.6rem;color:var(--muted);margin-top:3px}

/* the gesture hint, shown until the reader tilts the map for the first time */
.tilthint{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);z-index:6;pointer-events:none;
  display:flex;align-items:center;gap:9px;padding:8px 15px;border-radius:999px;
  background:color-mix(in srgb,var(--paper) 86%,transparent);border:1px solid var(--line);backdrop-filter:blur(6px);
  font-family:"IBM Plex Mono",monospace;font-size:.74rem;color:var(--ink);
  opacity:1;transition:opacity .5s ease}
.tilthint.off{opacity:0}
.tilthint kbd{font-family:inherit;font-size:.7rem;border:1px solid var(--line);border-bottom-width:2px;
  border-radius:5px;padding:1px 6px;background:var(--surface);color:var(--gold)}
.tilthint svg{width:15px;height:15px;color:var(--gold);flex:none}

/* ---- controls under the map ---- */
.ctrls{display:flex;flex-wrap:wrap;align-items:center;gap:11px 18px;padding:12px 15px;border-top:1px solid var(--line)}
.ctrls .grp{display:flex;align-items:center;gap:10px;flex:1 1 300px;min-width:0}
.ctrls .dlabel{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);white-space:nowrap}
.ctrls input[type=range]{flex:1;min-width:110px;accent-color:var(--gold);height:22px}
.dnum{font-family:"IBM Plex Mono",monospace;font-size:1rem;color:var(--gold);font-variant-numeric:tabular-nums;
  min-width:6ch;text-align:right}
.dsay{font-size:.9rem;color:var(--muted);flex-basis:100%;margin:0}
.dsay b{color:var(--ink);font-variant-numeric:tabular-nums}

/* ---- lower cards ---- */
.hyps{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
@media(max-width:880px){.hyps{grid-template-columns:1fr}}
#curve{display:block;width:100%;height:auto}
.explain{color:var(--muted);font-size:.93rem;line-height:1.65;padding:14px 16px;margin:0}
.explain b{color:var(--ink)} .explain a{color:var(--water)}
.explain p{margin:0 0 11px} .explain p:last-child{margin:0}

/* ---- the poster sheets ---- */
.posters{padding:2px 16px 15px}
.posters .ph{font-family:"IBM Plex Mono",monospace;font-size:.6rem;letter-spacing:.15em;text-transform:uppercase;
  color:var(--gold);margin:0 0 2px}
.posters .pnote{color:var(--muted);font-size:.82rem;line-height:1.55;margin:0 0 10px}
.prow{display:grid;grid-template-columns:1fr auto auto auto;align-items:center;gap:8px 12px;
  padding:8px 0;border-top:1px solid var(--line)}
.prow .pn{color:var(--ink);font-weight:600;font-size:.92rem;min-width:0}
.prow .pn small{display:block;font-family:"IBM Plex Mono",monospace;font-size:.63rem;font-weight:400;
  letter-spacing:.06em;color:var(--muted);text-transform:uppercase;margin-top:1px}
.prow .ps{font-family:"IBM Plex Mono",monospace;font-size:.68rem;color:var(--muted);white-space:nowrap}
.prow a{display:inline-flex;align-items:center;gap:6px;text-decoration:none;border:1px solid var(--line);
  border-radius:8px;padding:5px 10px;color:var(--ink);font-family:"IBM Plex Mono",monospace;font-size:.7rem;
  background:var(--paper);white-space:nowrap}
.prow a:hover{border-color:var(--gold);color:var(--gold)}
.prow a svg{width:12px;height:12px;flex:none}
@media(max-width:560px){
  .prow{grid-template-columns:1fr auto auto}
  .prow .ps{grid-column:1/-1;order:3;margin-top:-4px}
}

.dl{display:flex;flex-wrap:wrap;gap:10px;padding:0 16px 15px}
.dl a{display:inline-flex;align-items:center;gap:8px;text-decoration:none;border:1px solid var(--line);
  border-radius:10px;padding:9px 13px;color:var(--ink);font-family:"IBM Plex Mono",monospace;font-size:.76rem;
  background:var(--paper)}
.dl a:hover{border-color:var(--gold);color:var(--gold)}
.dl a span{color:var(--muted)}
.dl a svg{width:14px;height:14px;flex:none}

.cornerbtns{position:fixed;right:14px;bottom:14px;z-index:600;display:flex;gap:8px}
.fbbtn{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border:1px solid var(--line);
  border-radius:999px;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(8px);
  box-shadow:var(--shadow);color:var(--ink);font-family:inherit;font-size:.85rem;font-weight:600;text-decoration:none}
.fbbtn:hover{border-color:var(--gold)}
.fbbtn svg{width:15px;height:15px}

footer{padding:12px clamp(16px,4vw,34px) 70px;border-top:1px solid var(--line);background:var(--surface);
  color:var(--muted);font-size:.78rem;line-height:1.6}
footer b{color:var(--ink)} footer a{color:var(--water)}

#loader{position:fixed;inset:0;z-index:900;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:15px;background:var(--paper);color:var(--ink);transition:opacity .45s ease}
#loader.off{opacity:0;pointer-events:none}
#loader .lt{font-family:"Zilla Slab",Georgia,serif;font-weight:700;font-size:1.35rem;text-align:center;padding:0 20px}
#loader .ls{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}

/* Portrait screens: most of these lakes are long and thin, so a tall map is
   mostly empty sky. Shorten it and move the legend off the corner the coffee
   button owns. */
@media(max-width:700px){
  #map{height:400px}
  .legend{right:auto;left:12px;bottom:12px}
  .legend .lbar{width:min(200px,58vw)}
  .tilthint{bottom:auto;top:12px;left:auto;right:12px;transform:none;font-size:.68rem;padding:6px 11px}
}