/* River reading pages: /<id>/history.html and /<id>/headwaters.html (built by tools/history.py, tools/headwaters.py).
   Roomy, like the Virgin's headwaters page: room for maps and historic photos. */
:root{--bg:#08171f;--panel:#0e2430;--line:#1f4557;--text:#e4f0f5;--body:#cfe0e6;--dim:#8bb0c0;--acc:#7fdcea;--flood:#ff8a6e}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
main{max-width:720px;margin:0 auto;padding:max(16px,env(safe-area-inset-top)) 18px 80px}
a{color:var(--acc)}
/* top bar: back, home and the river's name (its menu), as on the maps (public/shared/rivermenu.js) */
.rtop{display:flex;align-items:center;gap:8px;margin:2px 0 24px;font-size:15.5px;font-weight:650;color:var(--text);min-height:36px}
.rtop .rnav a{width:34px;height:34px}
.rtop .rnav svg{width:18px;height:18px}
h1{font-size:32px;line-height:1.15;margin:0 0 12px;letter-spacing:-.02em}
.lede{color:var(--dim);font-size:18.5px;line-height:1.55;margin:0 0 30px}
h2{font-size:22px;line-height:1.25;margin:52px 0 14px;padding-top:22px;border-top:1px solid var(--line);letter-spacing:-.01em}
h3{font-size:18px;margin:30px 0 6px}
p{margin:0 0 16px;color:var(--body)}
sup{line-height:0}
sup a{text-decoration:none;font-size:11.5px;padding:0 1px}

/* overview map: a picture with HTML labels over it, edge to edge on phones */
.rmap{margin:8px -18px 10px}
.rmap .frame{position:relative;width:100%;overflow:hidden;background:#0b1d25}
.rmap img{position:absolute;inset:0;width:100%;height:100%;display:block}
.rmap .lab{position:absolute;white-space:nowrap;font-size:12px;line-height:1.3;font-weight:600;color:#eadfc8;pointer-events:none;
  text-shadow:0 0 3px #0b1d25,0 0 3px #0b1d25,0 0 6px #0b1d25}
.rmap .a-r{transform:translate(6px,-50%)} .rmap .a-l{transform:translate(calc(-100% - 6px),-50%)}
.rmap .a-t{transform:translate(-50%,calc(-100% - 5px))} .rmap .a-b{transform:translate(-50%,5px)} .rmap .a-c{transform:translate(-50%,-50%)}
.rmap .main{color:#7fdcea;font-style:italic;font-weight:700;font-size:12.5px}
.rmap .river{color:#8fcfdd;font-style:italic;font-weight:500}
.rmap .lake{color:#bfefff;font-style:italic;font-weight:700;font-size:12.5px}
.rmap .dam{color:#fff}
.rmap .pk{color:#d9bf92;font:italic 500 11.5px/1.3 Georgia,"Times New Roman",serif}
.rmap .mtn{color:#d9bf92;font:italic 500 12px/1.3 Georgia,"Times New Roman",serif;letter-spacing:.16em;text-transform:uppercase}
.rmap .scale{color:var(--dim);font-weight:500;font-size:11px}
figcaption{font-size:13.5px;color:var(--dim);line-height:1.45;padding:8px 18px 0}
@media (min-width:760px){.rmap{margin:8px 0 10px}.rmap .frame{border-radius:14px;border:1px solid var(--line)}figcaption{padding:8px 2px 0}}

/* historic photos */
.photo{margin:24px -18px}
.photo img{display:block;width:100%;height:auto;background:var(--panel)}
.photo .credit{display:block;font-size:12px;opacity:.8;margin-top:2px}
@media (min-width:760px){.photo{margin:28px 0}.photo img{border-radius:12px}}

/* timelines */
ol.tl{list-style:none;margin:8px 0 0;padding:0}
ol.tl li{position:relative;padding:0 0 26px 30px;margin-left:8px;border-left:2px solid var(--line);color:var(--body)}
ol.tl li:last-child{border-left-color:transparent;padding-bottom:4px}
ol.tl li::before{content:"";position:absolute;left:-8px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--acc)}
ol.tl b{display:block;color:var(--text);font-size:17px;margin-bottom:2px}

/* biggest flows */
.peaks{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin-top:8px}
.peak{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.peak .q{font-size:30px;font-weight:750;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.2}
.peak .q small{font-size:14px;color:var(--dim);font-weight:500;margin-left:4px}
.peak .w{font-size:15px;color:var(--body);margin-top:6px}
.peak .k{display:inline-block;margin-top:10px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.note{color:var(--dim);font-size:14px;margin-top:14px}

/* floods */
.flood{border-left:3px solid var(--flood);padding:2px 0 2px 18px;margin:26px 0}
.flood h3{margin:0 0 6px}
.flood p{margin:0}

/* tributaries */
table{width:100%;border-collapse:collapse;font-size:15.5px;margin:8px 0 12px}
th,td{text-align:left;padding:12px 8px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--body)}
th{color:var(--dim);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.06em}
td:first-child{font-weight:650;color:var(--text)}
@media (max-width:480px){table{font-size:14.5px}th,td{padding:10px 5px}}

/* sources: one tap away, at the end */
details{margin-top:56px;border-top:1px solid var(--line);padding-top:18px}
summary{cursor:pointer;color:var(--dim);font-size:15px}
details ol{color:var(--dim);font-size:14px;padding-left:22px}
details li{margin:6px 0}
.links{margin-top:30px;font-size:14px;color:var(--dim)}

/* a highlighted aside (headwaters pages) */
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:18px 0;color:var(--body)}
.card b{color:var(--text)} .card ul{margin:10px 0;padding-left:20px} .card li{margin:6px 0}

/* photo lightbox (public/shared/lightbox.js) and the stereograph viewer (public/shared/stereo.mjs) */
.photo img{cursor:zoom-in}
.photo img:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
html.lb-open{overflow:hidden}
.lb{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;background:rgba(3,10,14,.95);opacity:0;transition:opacity .18s;
  -webkit-user-select:none;user-select:none}
.lb.on{opacity:1}
.lb[hidden]{display:none}
.lb-stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:max(56px,calc(env(safe-area-inset-top) + 48px)) 10px 6px}
.lb-stage img,.lb-stage canvas{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block}
.lb-stage img[hidden]{display:none!important}
.lb-stage img{border-radius:4px;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.lb-stage canvas{touch-action:none;cursor:ew-resize;filter:drop-shadow(0 10px 30px rgba(0,0,0,.55))}
.lb-cap{width:100%;max-width:760px;margin:0 auto;padding:8px 18px calc(14px + env(safe-area-inset-bottom));max-height:42vh;overflow:auto;
  font-size:15px;line-height:1.5;-webkit-user-select:text;user-select:text}
.lb-cap p{margin:0 0 8px}
.lb-t{color:var(--text);font-weight:600}
.lb-about{color:var(--body)}
.lb-cr{font-size:12.5px;color:var(--dim)}
.lb button{font:inherit;color:var(--text);background:none;border:0;cursor:pointer}
.lb-x{position:absolute;top:max(8px,env(safe-area-inset-top));right:8px;width:44px;height:44px;border-radius:50%;font-size:30px!important;line-height:1;
  background:rgba(255,255,255,.08)!important}
.lb-nav{position:absolute;top:40%;width:44px;height:64px;font-size:40px!important;line-height:1;opacity:.7;background:rgba(0,0,0,.25)!important;border-radius:10px}
.lb-nav:hover{opacity:1}
.lb-prev{left:6px}.lb-next{right:6px}
.lb-nav[hidden]{display:none}
.lb-3d{margin:4px 0 8px}
.lb-go{background:var(--acc)!important;color:#06222b!important;font-weight:700!important;border-radius:99px;padding:8px 16px;margin-right:8px}
.lb-kind{font-size:13px;color:var(--dim)}
.sv-bar{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;margin-bottom:8px}
.sv-modes{display:inline-flex;border:1px solid var(--line);border-radius:99px;overflow:hidden}
.sv-modes button{padding:7px 13px;font-size:14px!important;color:var(--dim)!important}
.sv-modes button[aria-pressed="true"]{background:var(--acc)!important;color:#06222b!important;font-weight:700}
.sv-rest{font-size:14px;color:var(--body);display:inline-flex;gap:6px;align-items:center;cursor:pointer}
.sv-line{font-size:13.5px;color:var(--dim)}
.sv-status{color:var(--acc)}
.sv-more{font-size:13.5px;color:var(--body)}
.sv-more summary{cursor:pointer;color:var(--acc);margin-bottom:6px}
.sv-src{font-size:12.5px;color:var(--dim)}
@media (max-width:560px){.lb-nav{top:auto;bottom:calc(42vh + 8px);height:44px;font-size:30px!important}}
/* phone on its side: photo on the left, the caption in a column on the right, so the picture gets the height */
@media (orientation:landscape) and (max-height:560px){
  .lb{flex-direction:row}
  .lb-stage{padding:8px 6px 8px max(8px,env(safe-area-inset-left))}
  .lb-cap{width:min(300px,38vw);max-width:none;max-height:none;height:100%;margin:0;padding:56px max(14px,env(safe-area-inset-right)) 12px 12px;font-size:14px}
  .lb-nav{top:calc(50% - 22px);bottom:auto;height:44px;font-size:30px!important}
  .lb-next{right:calc(min(300px,38vw) + 6px)}
}

/* the river's print map, at the bottom of the page (tools/riverpage.py print_map) */
.pmap figure{margin:8px -18px 0}
.pmap img{display:block;width:100%;height:auto;background:#efe4c6}
@media (min-width:760px){.pmap figure{margin:8px 0 0}.pmap img{border-radius:6px;box-shadow:0 10px 30px rgba(0,0,0,.35)}}