/* Trip altitude chart (template-parts/altitude/chart.php, assets/js/altitude-chart.js). */
.whc{
  --wh-primary:#791e30; --wh-gold:#eebc1d; --wh-ink:#2a2224; --wh-muted:#6b5f5c;
  --wh-paper:#f6efe2; --wh-contour:#ab8f63; --wh-grey:#b8aca6;
  --wh-card:#fff; --wh-line:#ebe2da;
  --wh-display:"Miller Display",Georgia,serif;
  --wh-body:"Merriweather Sans",system-ui,sans-serif;
  --wh-plot-h:clamp(180px,24vw,290px);                  /* the one size control */
  font-family:var(--wh-body);color:var(--wh-ink);
  background:var(--wh-card);border:1px solid var(--wh-line);border-radius:14px;
  padding:clamp(16px,2.2vw,26px);margin:0;
  width:100%;max-width:100%;box-sizing:border-box;
}
.whc *,.whc *::before,.whc *::after{box-sizing:border-box}
.whc__head{margin-bottom:14px}
.whc__eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--wh-primary)}
.whc__title{font-family:var(--wh-display);font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.15;margin:6px 0 4px;color:var(--wh-ink)}
.whc__sub{font-size:14px;color:var(--wh-muted);margin:0}

.whc-facts{display:flex;flex-wrap:wrap;gap:8px 10px;margin:0 0 14px}
.whc-fact{background:#faf5ec;border:1px solid #ece0cd;border-radius:999px;padding:7px 14px;font-size:13px;color:#4a3f36}
.whc-fact b{color:var(--wh-primary);font-weight:700}

.whc-legend{display:flex;flex-wrap:wrap;gap:6px 18px;margin-bottom:10px;font-size:12.5px;color:var(--wh-muted)}
.whc-legend span{display:inline-flex;align-items:center;gap:7px}
.whc-key{width:11px;height:11px;border-radius:50%;background:var(--wh-primary);flex:0 0 auto}
.whc-key--grey{background:var(--wh-grey);width:9px;height:9px}
.whc-key--peak{border-radius:0;background:var(--wh-gold);border:2px solid var(--wh-primary);width:10px;height:10px;transform:rotate(45deg)}
.whc-key--band{border-radius:3px;background:#ddd3c2;width:15px;height:11px}

.whc-frame{position:relative}
.whc-scroll{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;border-radius:10px}
.whc-inner{min-width:100%;overflow:hidden}
.whc-plot{position:relative;width:100%;height:var(--wh-plot-h);background:var(--wh-paper);border-radius:10px}
.whc-plot svg{position:absolute;left:0;top:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.whc-axis{position:absolute;left:0;top:0;width:78px;height:var(--wh-plot-h);pointer-events:none}
.whc-gl{position:absolute;left:0;right:0;border-top:1px solid rgba(150,124,86,.22)}
.whc-gt{position:absolute;left:6px;font-size:11px;color:#7a6a52;transform:translateY(-100%);background:rgba(246,239,226,.92);padding:0 6px;border-radius:4px;white-space:nowrap}
.whc-band{position:absolute;background:rgba(122,106,82,.10);border-radius:8px}
.whc-bandlab{position:absolute;font-size:11px;color:#6f6250;transform:translateX(-50%);white-space:nowrap;background:rgba(246,239,226,.88);padding:2px 8px;border-radius:999px}
.whc-dot{position:absolute;border-radius:50%;background:var(--wh-primary);transform:translate(-50%,-50%);width:10px;height:10px}
.whc-dot--grey{background:var(--wh-grey);width:8px;height:8px}
.whc-peak{position:absolute;width:10px;height:10px;background:var(--wh-gold);border:2px solid var(--wh-primary);transform:translate(-50%,-50%) rotate(45deg)}
.whc-annot{position:absolute;font-size:11.5px;line-height:1.3;white-space:nowrap}
.whc-annot--l{text-align:right;transform:translate(-100%,-100%)}
.whc-annot--r{transform:translate(0,-100%)}
.whc-annot b{display:block;color:var(--wh-ink)}
.whc-annot span{color:#6f6250}

.whc-ribbon{position:relative;height:98px;margin-top:6px}
.whc-rib{position:absolute;bottom:0;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center}
.whc-rib__km{font-size:11px;font-weight:700;color:#5a1523;white-space:nowrap;min-height:15px}
.whc-rib__box{height:30px;display:flex;align-items:flex-end}
.whc-rib__bar{width:18px;background:#e6d5d8;border-radius:4px 4px 0 0}
.whc-rib__hr{font-size:11px;color:var(--wh-muted);white-space:nowrap;min-height:15px}
.whc-rib__after{font-size:10px;color:#8a7d78;font-style:italic;white-space:nowrap;min-height:13px}
.whc-rib__n{font-size:12.5px;font-weight:700}
.whc-rib__k{font-size:10px;color:#8a7d78;white-space:nowrap;min-height:13px}

/* fades that appear only while the chart can scroll */
.whc-frame::before,.whc-frame::after{content:"";position:absolute;top:0;bottom:0;width:26px;pointer-events:none;opacity:0;transition:opacity .2s}
.whc-frame::before{left:0;background:linear-gradient(90deg,#fff,rgba(255,255,255,0))}
.whc-frame::after{right:0;background:linear-gradient(270deg,#fff,rgba(255,255,255,0))}
.whc-frame[data-more-left]::before,.whc-frame[data-more-right]::after{opacity:1}
.whc-hint{font-size:12px;color:#8a7d78;margin:8px 0 0;display:none}
.whc-frame[data-more-right] ~ .whc-hint{display:block}

/* screen-reader / search-engine copy of the same numbers */
.whc-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

@media (max-width:760px){
  .whc{padding:16px 14px}
  .whc-legend{font-size:12px;gap:4px 12px}
  .whc-annot,.whc-bandlab{display:none}
  .whc-ribbon{height:104px}
}