:root{
    --ink:#0D1214;
    --panel:rgba(11,16,18,.86);
    --panel-line:rgba(217,210,192,.16);
    --bone:#D9D2C0;
    --bone-dim:rgba(217,210,192,.62);
    --chalk:#EFE9DA;
    --teal:#4A99A6;
    --teal-deep:#16454F;
    --ochre:#C98A3D;
    --red:#C4573B;
    --display:"Futura","Avenir Next","Century Gothic","Trebuchet MS",sans-serif;
    --body:Charter,Georgia,"Times New Roman",serif;
    --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  /* Immersive exhibit: text is for reading, not selecting. Suppressing
     selection stops an accidental drag from highlighting the whole panel
     (which was awkward to clear over a full-screen canvas). */
  html,body{height:100%;overflow:hidden;background:var(--ink);color:var(--bone);
    font-family:var(--body);-webkit-font-smoothing:antialiased;
    -webkit-user-select:none;user-select:none}
  #scene{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}
  /* the shore view's dusk sky is an in-scene dome; drop the map vignette there */
  body.shore-view::before{opacity:0}
  #scene.dragging{cursor:grabbing}

  /* ---------- museum label panel ---------- */
  #panel{position:fixed;left:20px;top:20px;bottom:150px;width:min(408px,90vw);
    background:var(--panel);border:1px solid var(--panel-line);border-radius:4px;
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    display:flex;flex-direction:column;overflow:hidden;z-index:10;
    transition:transform .35s ease,opacity .35s ease}
  #panel.collapsed{transform:translateX(-110%);opacity:0;pointer-events:none}
  .panel-head{padding:20px 22px 14px;border-bottom:1px solid var(--panel-line)}
  .eyebrow{font-family:var(--display);font-size:10px;letter-spacing:.24em;
    text-transform:uppercase;color:var(--bone-dim);margin-bottom:8px}
  h1{font-family:var(--display);font-weight:600;font-size:23px;line-height:1.12;
    letter-spacing:.045em;text-transform:uppercase;color:var(--chalk)}
  h1 .thin{font-weight:400;color:var(--teal)}
  .panel-body{flex:1;overflow-y:auto;overscroll-behavior:contain;
    scrollbar-width:thin;scrollbar-color:rgba(217,210,192,.25) transparent}
  .panel-body::-webkit-scrollbar{width:5px}
  .panel-body::-webkit-scrollbar-thumb{background:rgba(217,210,192,.22);border-radius:3px}

  /* chapter list */
  /* chapter chips: one horizontal strip, always one swipe away */
  .chapters{display:flex;gap:7px;overflow-x:auto;padding:12px 18px;
    border-bottom:1px solid var(--panel-line);scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .chapters::-webkit-scrollbar{display:none}
  .chapter{flex:none;display:flex;gap:7px;align-items:center;
    background:rgba(217,210,192,.04);border:1px solid var(--panel-line);border-radius:999px;
    color:var(--bone-dim);cursor:pointer;padding:7px 13px;
    font-family:var(--display);font-size:11.5px;letter-spacing:.05em;white-space:nowrap;
    transition:color .2s,background .2s,border-color .2s}
  .chapter:hover{color:var(--bone);background:rgba(217,210,192,.08)}
  .chapter.active{color:var(--chalk);background:rgba(74,153,166,.16);border-color:rgba(74,153,166,.5)}
  .chapter .num{font-family:var(--mono);font-size:9.5px;color:var(--teal)}

  /* story pager */
  .pager{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .pg{width:42px;height:42px;flex:none;border-radius:3px;border:1px solid var(--panel-line);
    background:rgba(217,210,192,.05);color:var(--chalk);cursor:pointer;font-size:20px;line-height:1;
    display:flex;align-items:center;justify-content:center;transition:background .2s}
  .pg:hover:not(:disabled){background:rgba(74,153,166,.18)}
  .pg:disabled{opacity:.25;cursor:default}
  .pg-mid{flex:1;text-align:center}
  .pg-count{font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--teal)}

  /* story */
  .story{padding:16px 22px 24px}
  .story h2{font-family:var(--display);font-size:17px;font-weight:600;letter-spacing:.09em;
    text-transform:uppercase;color:var(--chalk);margin-bottom:4px}
  .story .era{font-family:var(--mono);font-size:11px;color:var(--teal);margin-bottom:12px}
  .story p{font-size:15px;line-height:1.78;margin-bottom:14px;color:#E6DFCD;max-width:60ch}
  .story p:last-child{margin-bottom:0}
  .story em{color:var(--chalk);font-style:italic}
  .story .fig{font-family:var(--mono);font-size:12.5px;color:var(--chalk);
    background:rgba(74,153,166,.12);padding:1px 5px;border-radius:2px;white-space:nowrap}
  .sources{padding:14px 22px 18px;border-top:1px solid var(--panel-line);
    font-size:11px;line-height:1.55;color:var(--bone-dim)}
  .sources b{color:var(--bone);font-weight:600}

  /* ---------- gauge card ---------- */
  #gauge{position:fixed;right:20px;top:20px;width:228px;background:var(--panel);
    border:1px solid var(--panel-line);border-radius:4px;padding:16px 18px;
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);z-index:10;
    display:flex;gap:14px}
  .g-left{flex:1;min-width:0}
  /* Monospace + tabular so the month/year hold their columns while the
     timeline plays — a proportional font made the year jitter left and right
     every month, which was hard to track. */
  .g-date{font-family:var(--mono);font-size:14px;font-weight:600;letter-spacing:.1em;
    font-variant-numeric:tabular-nums;text-transform:uppercase;color:var(--chalk);
    margin-bottom:6px;white-space:nowrap}
  .g-elev{font-family:var(--mono);font-size:30px;font-weight:600;color:var(--chalk);
    line-height:1;letter-spacing:-.01em}
  .g-elev small{font-size:12px;font-weight:400;color:var(--bone-dim);letter-spacing:0}
  .g-rows{margin-top:12px;display:grid;gap:5px}
  .g-row{display:flex;justify-content:space-between;font-size:11px;color:var(--bone-dim)}
  .g-row b{font-family:var(--mono);font-weight:400;color:var(--bone)}
  .g-row b.warn{color:var(--ochre)}
  /* vertical core-sample gauge */
  #core{width:34px;flex:none;position:relative}
  #coreSvg{display:block;width:100%;height:170px}

  /* ---------- timeline ---------- */
  #timeline{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;
    width:min(1060px,calc(100vw - 40px));background:var(--panel);
    border:1px solid var(--panel-line);border-radius:4px;padding:10px 16px 12px;
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);z-index:10;
    display:flex;gap:14px;align-items:center}
  #playBtn{flex:none;width:40px;height:40px;border-radius:3px;border:1px solid var(--panel-line);
    background:rgba(74,153,166,.12);color:var(--chalk);cursor:pointer;font-size:14px;
    display:flex;align-items:center;justify-content:center;transition:background .2s}
  #playBtn:hover{background:rgba(74,153,166,.25)}
  #playBtn:focus-visible,button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
  .tl-wrap{flex:1;position:relative;min-width:0}
  #tlCanvas{display:block;width:100%;height:72px;cursor:ew-resize}
  #tlFlag{position:absolute;top:-4px;transform:translateX(-50%);pointer-events:none;
    font-family:var(--mono);font-size:10px;color:var(--ink);background:var(--chalk);
    padding:1px 6px;border-radius:2px;white-space:nowrap}

  /* ---------- overlays ---------- */
  .site-label{position:fixed;transform:translate(-50%,-100%);pointer-events:none;z-index:5;
    font-family:var(--display);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
    color:var(--chalk);text-shadow:0 1px 4px rgba(0,0,0,.9);white-space:nowrap;
    padding-bottom:8px}
  .site-label::after{content:"";position:absolute;left:50%;bottom:0;width:1px;height:7px;
    background:rgba(239,233,218,.55)}
  .site-label .st{display:block;font-size:8.5px;letter-spacing:.1em;color:var(--teal);margin-top:1px}
  .site-label .st.dry{color:var(--ochre)}

  #hint{position:fixed;right:20px;bottom:110px;z-index:9;text-align:right;
    font-family:var(--display);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
    color:var(--bone-dim);line-height:1.9;pointer-events:none;
    transition:opacity 1s}
  #compass{position:fixed;right:26px;top:150px;z-index:9;width:34px;height:34px;
    pointer-events:none;color:var(--bone-dim)}
  #resetBtn{position:fixed;right:26px;top:200px;z-index:9;width:34px;height:34px;
    border-radius:3px;border:1px solid var(--panel-line);background:var(--panel);
    color:var(--bone-dim);cursor:pointer;display:flex;align-items:center;justify-content:center;
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:color .2s}
  #resetBtn:hover{color:var(--chalk)}
  .site-label.town{color:var(--ochre)}
  .site-label.town::after{background:rgba(201,138,61,.6)}
  /* ---------- collapsible chrome: close controls + reopen chips ---------- */
  .panel-x{position:absolute;z-index:3;width:26px;height:26px;flex:none;
    display:flex;align-items:center;justify-content:center;border-radius:8px;
    border:1px solid var(--panel-line);background:rgba(217,210,192,.05);
    color:var(--bone-dim);cursor:pointer;font-size:11px;line-height:1;
    transition:color .2s,background .2s}
  .panel-x:hover{color:var(--chalk);background:rgba(196,87,59,.28)}
  .panel-head{position:relative}
  .panel-head .panel-x{top:16px;right:16px}
  .gauge-x{top:12px;right:12px}
  .tl-x{position:static;align-self:center}

  .reopen{position:fixed;z-index:12;width:38px;height:38px;display:none;
    align-items:center;justify-content:center;border-radius:11px;
    border:1px solid var(--panel-line);background:var(--panel);color:var(--bone-dim);
    cursor:pointer;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    box-shadow:0 8px 24px rgba(0,0,0,.28);transition:color .2s,background .2s,transform .15s}
  .reopen.shown{display:flex}
  .reopen:hover{color:var(--chalk);background:rgba(100,193,195,.16)}
  .reopen:active{transform:scale(.93)}
  #panelToggle{left:16px;top:16px}
  #gaugeToggle{right:16px;top:16px}
  #timelineToggle{left:50%;transform:translateX(-50%);bottom:16px}
  #timelineToggle:active{transform:translateX(-50%) scale(.93)}

  #gauge{transition:transform .32s ease,opacity .32s ease}
  #gauge.collapsed{transform:translateX(120%);opacity:0;pointer-events:none}
  #timeline.collapsed{transform:translateX(-50%) translateY(150%);opacity:0;pointer-events:none;transition:transform .32s ease,opacity .32s ease}

  #modeSwitch{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:9;
    display:flex;background:var(--panel);border:1px solid var(--panel-line);border-radius:999px;
    padding:3px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
  #modeSwitch button{border:0;background:none;color:var(--bone-dim);cursor:pointer;
    font-family:var(--display);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
    padding:7px 15px;border-radius:999px;transition:color .2s,background .2s}
  #modeSwitch button:hover{color:var(--bone)}
#modeSwitch button.active{color:var(--ink);background:var(--chalk)}

#damCaption{position:fixed;left:50%;top:68px;z-index:9;transform:translate(-50%,-8px);
  min-width:250px;padding:11px 15px;border:1px solid var(--panel-line);border-radius:12px;
  background:linear-gradient(145deg,rgba(8,18,22,.94),rgba(7,14,18,.82));
  box-shadow:0 16px 48px rgba(0,0,0,.28);backdrop-filter:blur(14px);
  display:grid;grid-template-columns:1fr auto;gap:2px 18px;opacity:0;pointer-events:none;
  transition:opacity .25s ease,transform .25s ease}
body.dam-view #damCaption{opacity:1;transform:translate(-50%,0)}
.dam-kicker{grid-column:1/-1;font-family:var(--display);font-size:8px;letter-spacing:.18em;
  text-transform:uppercase;color:#83cfd0}
#damLevel{font-family:var(--mono);font-size:20px;color:var(--chalk);font-weight:500}
#damDelta{align-self:end;padding-bottom:2px;font-family:var(--display);font-size:9px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--ochre)}

/* shore POV caption — mirrors the dam caption, shown only in eye-level view */
#shoreCaption{position:fixed;left:50%;top:68px;z-index:9;transform:translate(-50%,-8px);
  min-width:250px;padding:11px 15px;border:1px solid var(--panel-line);border-radius:12px;
  background:linear-gradient(145deg,rgba(8,18,22,.94),rgba(7,14,18,.82));
  box-shadow:0 16px 48px rgba(0,0,0,.28);backdrop-filter:blur(14px);
  display:grid;grid-template-columns:1fr;gap:3px;text-align:center;opacity:0;pointer-events:none;
  transition:opacity .25s ease,transform .25s ease}
body.shore-view #shoreCaption{opacity:1;transform:translate(-50%,0)}
.shore-kicker{font-family:var(--display);font-size:8px;letter-spacing:.18em;
  text-transform:uppercase;color:#83cfd0}
#shoreLevel{font-family:var(--mono);font-size:19px;color:var(--chalk);font-weight:500}
#shoreDelta{font-family:var(--display);font-size:8.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--bone-dim)}

  #veil{position:fixed;inset:0;z-index:30;background:#0D1214;display:flex;flex-direction:column;
    align-items:center;justify-content:center;gap:10px;transition:opacity .6s;pointer-events:none}
  #veil .v-t{font-family:var(--display);font-size:13px;letter-spacing:.42em;color:var(--chalk)}
  #veil .v-s{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--bone-dim)}

  body.pulse #scene{background:linear-gradient(175deg,#05070F 0%,#0A0E22 52%,#141B3D 100%)}
  body.pulse .site-label{color:#9FD9E8}
  body.pulse #hint,body.pulse #compass{color:rgba(159,217,232,.5)}

  @media (max-width:860px){
    /* panel becomes a bottom sheet, hidden by default (JS adds .hidden on load) */
    #panel{left:0;right:0;bottom:0;top:auto;width:auto;max-height:62vh;
      border-radius:12px 12px 0 0;border-left:none;border-right:none;border-bottom:none;
      z-index:14;transition:transform .32s ease,opacity .32s ease;
      padding-bottom:env(safe-area-inset-bottom)}
    #panel.collapsed{transform:translateY(112%);opacity:0}
    #panel::before{content:"";display:block;width:38px;height:4px;border-radius:2px;
      background:rgba(217,210,192,.28);margin:8px auto 0}
    .panel-head{padding:10px 18px 10px}
    .panel-head h1{font-size:19px}
    .panel-body{padding-bottom:4px}
    .sources{padding:10px 18px 14px;font-size:9.5px}

    /* gauge collapses to a slim strip along the top */
    #gauge{left:58px;right:12px;top:12px;width:auto;padding:8px 12px;
      align-items:center;gap:12px}
    #core{display:none}
    .g-date{margin-bottom:2px;font-size:11px}
    .g-elev{font-size:21px;display:inline-block}
    .g-left{display:flex;align-items:baseline;gap:12px;flex-wrap:nowrap;overflow:hidden}
    .g-left>div:first-child{flex:none}
    .g-rows{margin-top:0;display:flex;gap:12px;grid-template-columns:none}
    .g-row{gap:5px;white-space:nowrap}
    .g-row:nth-child(1),.g-row:nth-child(4){display:none}
    .g-row span{display:none}

    #timeline{bottom:10px;width:calc(100vw - 24px);padding:7px 9px;gap:9px}
    #tlCanvas{height:46px}
    #tlFlag{font-size:9px}
    #playBtn{width:34px;height:34px}
    #hint,#compass{display:none}
    #resetBtn{right:12px;top:auto;bottom:88px}
    #modeSwitch{top:auto;bottom:88px;left:12px;transform:none}
  #modeSwitch button{padding:7px 11px;font-size:10px}
    #damCaption{top:62px;min-width:220px;padding:9px 12px}
    .pg{width:46px;height:46px}
    .story p{font-size:15px}
    .chapters{padding:10px 14px}
    .reopen{top:12px}
    #panelToggle{left:12px}
    #gaugeToggle{right:12px}
    .site-label{font-size:9px}
  }
  @media (prefers-reduced-motion:reduce){
    #panel{transition:none}
  }

/* ---------- 2026 exhibit system ---------- */
:root{
  --ink:#071014;
  --panel:rgba(7,15,19,.88);
  --panel-solid:#0b1519;
  --panel-line:rgba(224,234,226,.14);
  --bone:#d7ddd5;
  --bone-dim:rgba(215,221,213,.62);
  --chalk:#f3f0e7;
  --teal:#64c1c3;
  --teal-deep:#173f46;
  --ochre:#e0a15a;
  --display:"Avenir Next","Helvetica Neue",Arial,sans-serif;
  --body:"Iowan Old Style",Charter,Georgia,serif;
}

body::before{
  content:"";position:fixed;inset:0;z-index:3;pointer-events:none;
  background:
    radial-gradient(circle at 66% 45%,transparent 22%,rgba(3,10,13,.14) 74%),
    linear-gradient(90deg,rgba(3,10,13,.24),transparent 34%,transparent 78%,rgba(3,10,13,.12));
}

#panel,#gauge,#timeline,#modeSwitch,#resetBtn{
  box-shadow:0 20px 60px rgba(0,0,0,.26),inset 0 1px 0 rgba(255,255,255,.025);
}

#panel{
  left:16px;top:16px;bottom:148px;width:min(384px,calc(100vw - 32px));
  border-radius:16px;background:linear-gradient(180deg,rgba(8,17,21,.94),rgba(6,14,18,.86));
  border-color:rgba(224,234,226,.16);
}
.panel-head{padding:22px 24px 18px;background:linear-gradient(135deg,rgba(100,193,195,.07),transparent 55%)}
.eyebrow{display:flex;align-items:center;gap:8px;margin-bottom:11px;font-size:9px;letter-spacing:.2em}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 12px rgba(100,193,195,.8)}
h1{font-size:26px;letter-spacing:.025em;line-height:1.04}
h1 .thin{display:inline-block;margin-top:5px;font-size:.76em;letter-spacing:.075em}

.chapters{gap:8px;padding:13px 18px;background:rgba(0,0,0,.08)}
.chapter{min-height:34px;padding:7px 12px;border-radius:10px;background:rgba(255,255,255,.025);font-size:10.5px}
.chapter.active{background:linear-gradient(135deg,rgba(100,193,195,.19),rgba(100,193,195,.08));box-shadow:inset 0 0 0 1px rgba(100,193,195,.08)}
.story{padding:18px 24px 28px}
.story h2{font-size:18px;letter-spacing:.07em}
.story .era{margin-top:6px;margin-bottom:16px;color:#83cfd0}
.story p{font-size:15px;line-height:1.68;color:#e5e5dc}
.story .fig{background:rgba(100,193,195,.13);color:#f7f4e9;border:1px solid rgba(100,193,195,.1);border-radius:5px}
.pager{margin-bottom:18px}
.pg{width:38px;height:38px;border-radius:9px}

.sources{padding:0;border-top:1px solid var(--panel-line);font-family:var(--display);font-size:10px;line-height:1.55;color:var(--bone-dim)}
.sources summary{padding:13px 24px;cursor:pointer;list-style:none;text-transform:uppercase;letter-spacing:.14em;color:var(--bone-dim)}
.sources summary::-webkit-details-marker{display:none}
.sources summary::after{content:"+";float:right;color:var(--teal);font-size:14px;line-height:10px}
.sources[open] summary::after{content:"−"}
.sources p{padding:0 24px 16px}

#gauge{right:16px;top:16px;width:244px;padding:18px 18px 16px;border-radius:14px;background:linear-gradient(145deg,rgba(8,18,22,.94),rgba(7,14,18,.86))}
.g-date{font-size:14px;color:var(--chalk)}
.g-elev{font-size:34px;letter-spacing:-.04em}
.capacity-track{height:4px;margin:10px 0 12px;border-radius:99px;overflow:hidden;background:rgba(255,255,255,.08)}
.capacity-track span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,#2f737a,var(--teal));box-shadow:0 0 12px rgba(100,193,195,.4);transition:width .22s ease}
.g-rows{margin-top:0;gap:7px}
.g-row{font-family:var(--display);font-size:10.5px}
.g-row b{font-size:11px}

#timeline{bottom:16px;width:min(1080px,calc(100vw - 32px));padding:11px 16px 12px;border-radius:14px;background:linear-gradient(180deg,rgba(8,17,21,.91),rgba(6,13,17,.95))}
#playBtn{width:44px;height:44px;border-radius:50%;border-color:rgba(100,193,195,.28);background:linear-gradient(135deg,rgba(100,193,195,.28),rgba(100,193,195,.1));box-shadow:0 8px 24px rgba(0,0,0,.25)}
.timeline-heading{position:absolute;top:1px;left:0;right:0;display:flex;justify-content:space-between;font-family:var(--display);font-size:8px;letter-spacing:.16em;text-transform:uppercase;color:var(--bone-dim);pointer-events:none}
.timeline-heading span:last-child{opacity:.58}
#tlCanvas{height:68px;padding-top:12px}
#tlFlag{top:8px;border-radius:5px;padding:2px 7px;font-size:9px;box-shadow:0 4px 14px rgba(0,0,0,.24)}

#modeSwitch{top:16px;padding:4px;border-radius:12px;background:rgba(7,15,19,.82)}
#modeSwitch button{padding:8px 16px;border-radius:8px;font-size:9px}
#modeSwitch button.active{background:#f2efe6;box-shadow:0 4px 16px rgba(0,0,0,.2)}
#resetBtn{right:22px;top:214px;border-radius:10px}
#compass{right:22px;top:164px}
#hint{right:22px;bottom:112px;font-size:8.5px;line-height:1.8}

.site-label{padding:5px 7px 12px;border-radius:5px;background:rgba(5,12,15,.34);font-size:9px;letter-spacing:.12em;text-shadow:0 2px 8px #000;box-shadow:0 4px 18px rgba(0,0,0,.06)}
.site-label::after{bottom:3px}

/* ---------- place cards & clickable labels ---------- */
.site-label{pointer-events:auto;cursor:pointer;transition:background .2s,box-shadow .2s}
.site-label:hover{background:rgba(10,24,29,.72);box-shadow:0 0 0 1px rgba(100,193,195,.35)}
.site-label.active{background:rgba(100,193,195,.2);box-shadow:0 0 0 1px rgba(100,193,195,.65);color:#fff}

#placesBtn{border:0;background:none;cursor:pointer;position:relative;
  font-family:var(--display);font-size:9px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ochre);padding:8px 16px;border-radius:8px;margin-left:4px;transition:color .2s,background .2s}
#placesBtn::before{content:"";position:absolute;left:-2px;top:6px;bottom:6px;width:1px;background:var(--panel-line)}
#placesBtn:hover{color:#f0c690;background:rgba(224,161,90,.08)}
#placesBtn.active{color:var(--ink);background:var(--ochre);box-shadow:0 4px 16px rgba(0,0,0,.2)}

#placeCard{position:fixed;right:16px;top:292px;bottom:148px;width:308px;z-index:12;
  display:flex;flex-direction:column;border-radius:14px;overflow:hidden;
  background:linear-gradient(180deg,rgba(8,17,21,.95),rgba(6,14,18,.9));
  border:1px solid var(--panel-line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 20px 60px rgba(0,0,0,.32),inset 0 1px 0 rgba(255,255,255,.025);
  opacity:0;transform:translateY(10px);transition:opacity .28s ease,transform .28s ease}
#placeCard.show{opacity:1;transform:none}
.pc-photo{position:relative;margin:0;flex:none;min-height:0;aspect-ratio:3/2;background:#0a1417;touch-action:pan-y;overflow:hidden}
.pc-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;cursor:zoom-in;-webkit-user-select:none;user-select:none;transition:transform .45s ease}
.pc-photo:hover .pc-img{transform:scale(1.03)}
.pc-zoom{position:absolute;top:8px;right:8px;width:26px;height:26px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;pointer-events:none;
  background:rgba(5,12,15,.55);color:var(--chalk);font-size:13px;
  opacity:0;transition:opacity .25s ease}
.pc-photo:hover .pc-zoom{opacity:.92}
@media (hover:none){.pc-zoom{opacity:.75}}
.pc-ph{position:absolute;top:50%;transform:translateY(-50%);width:30px;height:44px;border:0;
  background:linear-gradient(90deg,rgba(5,12,15,.55),transparent);color:var(--chalk);
  font-size:20px;cursor:pointer;opacity:.75;transition:opacity .2s}
.pc-ph:hover{opacity:1}
.pc-ph.prev{left:0;border-radius:0 8px 8px 0}
.pc-ph.next{right:0;background:linear-gradient(270deg,rgba(5,12,15,.55),transparent);border-radius:8px 0 0 8px}
.pc-dots{position:absolute;left:0;right:0;bottom:7px;display:flex;justify-content:center;gap:5px}
.pc-dot{width:5px;height:5px;border-radius:50%;background:rgba(243,240,231,.4);
  box-shadow:0 1px 3px rgba(0,0,0,.6);transition:background .2s,transform .2s}
.pc-dot.on{background:var(--chalk);transform:scale(1.25)}
.pc-capline{flex:none;display:flex;justify-content:space-between;gap:10px;align-items:baseline;
  padding:6px 14px;border-bottom:1px solid var(--panel-line);background:rgba(0,0,0,.14)}
.pc-cap{font-family:var(--display);font-size:9.5px;letter-spacing:.04em;color:var(--bone-dim);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pc-credit{flex:none;font-family:var(--mono);font-size:8.5px;color:rgba(215,221,213,.42);
  text-decoration:none;letter-spacing:.03em}
.pc-credit:hover{color:var(--teal)}
.pc-body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:14px 18px 16px;
  scrollbar-width:thin;scrollbar-color:rgba(217,210,192,.25) transparent}
.pc-body::-webkit-scrollbar{width:5px}
.pc-body::-webkit-scrollbar-thumb{background:rgba(217,210,192,.22);border-radius:3px}
.pc-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:9px}
.pc-kicker{font-family:var(--mono);font-size:10px;color:#83cfd0;margin-bottom:4px}
.pc-name{font-family:var(--display);font-size:16px;font-weight:600;letter-spacing:.07em;
  text-transform:uppercase;color:var(--chalk);line-height:1.2}
.pc-close{flex:none;width:28px;height:28px;border-radius:8px;border:1px solid var(--panel-line);
  background:rgba(217,210,192,.05);color:var(--bone-dim);cursor:pointer;font-size:12px;
  display:flex;align-items:center;justify-content:center;transition:color .2s,background .2s}
.pc-close:hover{color:var(--chalk);background:rgba(196,87,59,.25)}
.pc-story p{font-size:13.5px;line-height:1.66;color:#e5e5dc;margin-bottom:10px}
.pc-story p:last-child{margin-bottom:0}
.pc-pager{flex:none;display:flex;align-items:center;gap:10px;padding:9px 14px;
  border-top:1px solid var(--panel-line);background:rgba(0,0,0,.14)}
.pc-pg{width:34px;height:30px;border-radius:8px;border:1px solid var(--panel-line);
  background:rgba(217,210,192,.05);color:var(--chalk);cursor:pointer;font-size:16px;line-height:1;
  display:flex;align-items:center;justify-content:center;transition:background .2s}
.pc-pg:hover{background:rgba(100,193,195,.18)}
.pc-count{flex:1;text-align:center;font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--teal)}

/* ---------- lightbox gallery ---------- */
/* the id rules below set display:flex/grid, which outranks the UA's
   [hidden]{display:none} — restate it or closed overlays keep catching clicks */
#placeCard[hidden],#lightbox[hidden]{display:none}
#lightbox{position:fixed;inset:0;z-index:40;display:grid;grid-template-columns:1fr 348px;
  opacity:0;transition:opacity .32s ease}
#lightbox.show{opacity:1}
.lb-backdrop{position:absolute;inset:0;background:rgba(4,10,13,.94);
  backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px)}
.lb-stage{position:relative;z-index:1;min-width:0;display:flex;flex-direction:column;
  padding:30px 34px 20px;gap:12px}
.lb-frame{position:relative;flex:1;min-height:0}
.lb-img{position:absolute;inset:0;margin:auto;max-width:100%;max-height:100%;
  border-radius:6px;box-shadow:0 30px 90px rgba(0,0,0,.55);
  opacity:0;transform:translateX(26px) scale(.985);cursor:e-resize;
  -webkit-user-select:none;user-select:none;
  transition:opacity .42s ease,transform .42s ease}
.lb-img.from-left{transform:translateX(-26px) scale(.985)}
.lb-img.on{opacity:1;transform:none}
.lb-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;
  width:50px;height:50px;border-radius:50%;border:1px solid rgba(224,234,226,.2);
  background:rgba(8,17,21,.6);color:var(--chalk);font-size:24px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;backdrop-filter:blur(8px);
  transition:background .2s,border-color .2s,transform .15s}
.lb-arrow:hover{background:rgba(100,193,195,.24);border-color:rgba(100,193,195,.5)}
.lb-arrow:active{transform:translateY(-50%) scale(.94)}
.lb-arrow.prev{left:10px}
.lb-arrow.next{right:10px}
.lb-under{flex:none;display:flex;flex-direction:column;align-items:center;gap:8px}
.lb-dots{display:flex;gap:6px}
.lb-dot{width:6px;height:6px;border-radius:50%;background:rgba(243,240,231,.28);
  cursor:pointer;transition:background .2s,transform .2s}
.lb-dot:hover{background:rgba(243,240,231,.6)}
.lb-dot.on{background:var(--teal);transform:scale(1.3)}
.lb-capline{display:flex;gap:14px;align-items:baseline;max-width:min(92%,880px)}
.lb-cap{font-family:var(--display);font-size:12px;letter-spacing:.05em;color:var(--bone);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-credit{flex:none;font-family:var(--mono);font-size:9px;color:rgba(215,221,213,.45);
  text-decoration:none;letter-spacing:.03em}
.lb-credit:hover{color:var(--teal)}
.lb-info{position:relative;z-index:1;display:flex;flex-direction:column;min-height:0;
  padding:24px 26px 18px;gap:14px;border-left:1px solid var(--panel-line);
  background:linear-gradient(180deg,rgba(9,19,23,.72),rgba(6,14,18,.5))}
.lb-count{flex:none;padding-right:48px;font-family:var(--mono);font-size:9.5px;
  letter-spacing:.18em;text-transform:uppercase;color:rgba(215,221,213,.5)}
.lb-inner{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding-right:6px;
  opacity:0;transform:translateY(8px);
  scrollbar-width:thin;scrollbar-color:rgba(217,210,192,.25) transparent}
.lb-inner.in{opacity:1;transform:none;transition:opacity .38s ease .08s,transform .38s ease .08s}
.lb-inner::-webkit-scrollbar{width:5px}
.lb-inner::-webkit-scrollbar-thumb{background:rgba(217,210,192,.22);border-radius:3px}
.lb-kicker{font-family:var(--mono);font-size:10.5px;color:#83cfd0;margin-bottom:6px}
.lb-name{font-family:var(--display);font-size:20px;font-weight:600;letter-spacing:.07em;
  text-transform:uppercase;color:var(--chalk);line-height:1.18;margin-bottom:12px}
.lb-story p{font-size:14px;line-height:1.7;color:#e5e5dc;margin-bottom:12px}
.lb-story p:last-child{margin-bottom:0}
.lb-placenav{flex:none;display:grid;grid-template-columns:1fr 1fr;gap:8px;
  padding-top:14px;border-top:1px solid var(--panel-line)}
.lb-pl{display:flex;align-items:center;gap:7px;min-width:0;padding:9px 11px;border-radius:9px;
  border:1px solid var(--panel-line);background:rgba(217,210,192,.04);color:var(--bone-dim);
  cursor:pointer;font-family:var(--display);font-size:9.5px;letter-spacing:.08em;
  text-transform:uppercase;transition:color .2s,background .2s,border-color .2s}
.lb-pl:hover{color:var(--chalk);background:rgba(100,193,195,.14);border-color:rgba(100,193,195,.4)}
.lb-pl span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-pl i{font-style:normal;font-size:14px;color:var(--teal)}
.lb-pl.next{justify-content:flex-end;text-align:right}
.lb-hint{flex:none;font-family:var(--display);font-size:8.5px;letter-spacing:.16em;
  text-transform:uppercase;color:rgba(215,221,213,.32);text-align:center}
.lb-close{position:absolute;top:16px;right:16px;z-index:3;width:40px;height:40px;
  border-radius:50%;border:1px solid rgba(224,234,226,.2);background:rgba(8,17,21,.6);
  color:var(--bone);font-size:15px;cursor:pointer;display:flex;align-items:center;
  justify-content:center;backdrop-filter:blur(8px);transition:background .2s,color .2s}
.lb-close:hover{color:var(--chalk);background:rgba(196,87,59,.35)}

@media (max-width:860px){
  body::before{background:radial-gradient(circle at 50% 42%,transparent 30%,rgba(3,10,13,.18) 100%)}
  #panel{left:0;right:0;bottom:0;width:auto;border-radius:18px 18px 0 0;max-height:68vh}
  .panel-head{padding:10px 18px 12px}
  .eyebrow{display:none}
  .panel-head h1{font-size:20px}
  .sources summary{padding:12px 18px}
  .sources p{padding:0 18px 14px}
  #gauge{left:58px;right:12px;top:12px;width:auto;padding:9px 12px;border-radius:12px}
  .capacity-track{display:none}
  #timeline{bottom:10px;width:calc(100vw - 20px);padding:8px 10px;border-radius:12px}
  .timeline-heading{display:none}
  #tlCanvas{height:48px;padding-top:0}
  #tlFlag{top:-4px}
  #modeSwitch{bottom:82px;top:auto;left:10px}
  #damCaption{top:auto;bottom:128px;left:50%}
  #resetBtn{right:10px;bottom:82px}
  .reopen{background:rgba(7,15,19,.9)}
  .site-label{font-size:8px;background:rgba(5,12,15,.25)}
  #placesBtn{padding:7px 11px;font-size:9px}
  /* place card becomes a bottom sheet, like the exhibit panel */
  #placeCard{left:0;right:0;top:auto;bottom:0;width:auto;max-height:78vh;z-index:16;
    border-radius:18px 18px 0 0;border-left:none;border-right:none;border-bottom:none;
    transform:translateY(14%);padding-bottom:env(safe-area-inset-bottom)}
  #placeCard.show{transform:none}
  .pc-photo{aspect-ratio:2/1;max-height:34vh}
  .pc-story p{font-size:14px}
  /* lightbox stacks: photo above, story rail below */
  #lightbox{grid-template-columns:1fr;grid-template-rows:1fr auto}
  .lb-stage{padding:52px 12px 10px;gap:9px}
  .lb-arrow{width:40px;height:40px;font-size:19px}
  .lb-arrow.prev{left:6px}
  .lb-arrow.next{right:6px}
  .lb-capline{max-width:96%}
  .lb-info{max-height:42vh;border-left:none;border-top:1px solid var(--panel-line);
    padding:14px 18px 12px;gap:10px}
  .lb-name{font-size:17px;margin-bottom:8px}
  .lb-story p{font-size:13.5px}
  .lb-hint{display:none}
  .lb-close{top:10px;right:10px}
}
@media (prefers-reduced-motion:reduce){
  #lightbox,.lb-img,.lb-inner.in,.pc-img{transition:none}
}