/* Tide Mechanics page (src/pages/tide-mechanics.html). Its own type and chart palette, scoped
   to .tm so the site header and footer keep the site's tokens. Night colours follow
   prefers-color-scheme, as the rest of the site does; assets/tide-mechanics.js redraws the
   canvases when the OS scheme changes. */
.tm{
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.tm h1,.tm h2,.tm h3{font-family:var(--f-display);font-weight:700;text-wrap:balance;line-height:1.15;margin:0;letter-spacing:normal}
.tm h1{font-size:clamp(2.1rem,5.5vw,3.4rem);letter-spacing:-.01em}
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.tm .toc{display:flex;flex-wrap:wrap;gap:6px 14px;font-family:var(--f-mono);font-size:.82rem;margin-top:14px;padding:0;list-style:none}
.tm .toc a{color:var(--ink-2);text-decoration:none;border-bottom:1px dotted var(--rule)}
.tm .toc a:hover{color:var(--accent)}
.tm section{padding-top:44px;margin-top:28px;border-top:1px solid var(--rule)}
.tm section:first-of-type{border-top:0}
.tm .fig{margin:18px 0 6px;min-width:0}
.tm .fig canvas{display:block;width:100%;background:var(--paper);border:1px solid var(--rule);border-radius:3px}
/* Reserve each figure's drawn height before assets/tide-mechanics.js runs, so the page does not
   shift after load and a link to #s4 or #s6 lands on its heading. These match the heights the
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#s3-nodal{height:220px}
#s4-clock,#s4-mer{height:min(154px,calc(20cqw + 46px))}
#s5-plot{height:320px}
#s6-time{height:238px}
#s7-h{height:150px}
#s7-sub{height:190px}
#s7-cur{height:290px}
#s7-surge{height:240px}
@container (width < 560px){
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}
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.tm .cap b{color:var(--ink)}
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.tm .ctl label{white-space:nowrap}
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.tm .pill.ok{background:var(--ok);color:var(--paper)} .tm .pill.no{border:1px solid var(--muted);color:var(--muted)}
.tm .pill.pub{background:var(--c-m2);color:var(--paper)} .tm .pill.sdk{background:var(--accent);color:var(--paper)} .tm .pill.fix{border:1px solid var(--ink-2);color:var(--ink-2)}
/* formula */
.tm .formula{font-family:var(--f-display);font-size:clamp(1.15rem,3.6vw,1.9rem);padding:16px 10px;text-align:center;background:var(--paper);border:1px solid var(--rule);border-radius:3px;line-height:1.9}
.tm .formula button.t{font:inherit;background:none;border:0;border-bottom:3px solid transparent;padding:0 .08em;border-radius:0;color:var(--ink);cursor:pointer}
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.tm .formula button.t[data-owner="sdk"]{border-bottom-color:var(--accent)}
.tm .formula button.t[data-owner="fix"]{border-bottom-color:var(--muted)}
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.tm .terms li{font-size:.9rem;padding:4px 0;border-top:1px solid var(--rule)}
.tm .terms li.active{border-top-color:var(--accent);background:var(--accent-soft)}
.tm .terms li b{font-family:var(--f-display);font-size:1.05rem}
.tm .panels{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,400px),1fr));gap:22px;margin-top:16px}
.tm .panel{min-width:0}
.tm .panel h3{margin:0 0 6px;font-size:1.1rem}
.tm .btnrow.flush{margin:0}
.tm .controls.tight{margin:6px 0}
/* pipeline */
.tm .flow{list-style:none;padding:0;margin:20px 0;display:grid;gap:0}
.tm .flow li{position:relative;display:grid;grid-template-columns:44px 1fr;gap:12px;padding:12px 0}
.tm .flow li:not(:last-child)::after{content:"";position:absolute;left:21px;top:52px;bottom:-6px;width:2px;background:var(--ink)}
.tm .flow li:not(:last-child)::before{content:"";position:absolute;left:16px;bottom:-8px;border:6px solid transparent;border-top:8px solid var(--ink);z-index:1}
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.tm .flow h3{font-size:1.05rem;margin-top:4px}
.tm .flow p{margin:.25em 0;font-size:.92rem;color:var(--ink-2)}
.tm .chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.tm .chip{font-family:var(--f-mono);font-size:.75rem;padding:2px 8px;border:1px solid var(--rule);border-radius:2px;background:var(--paper)}
.tm .chip.v{border-color:var(--ok);color:var(--ok)} .tm .chip.c{border-color:var(--c-m2);color:var(--c-m2)} .tm .chip.u{border-color:var(--muted);color:var(--muted)} .tm .chip.d{border-color:var(--bad);color:var(--bad)}
.tm .tm-note{font-size:.9rem;border-top:1px solid var(--accent);border-bottom:1px solid var(--accent);padding:8px 0;margin:16px 0}
.tm .tm-foot{margin-top:50px;font-size:.82rem;color:var(--muted);border-top:1px solid var(--rule);padding-top:14px;max-width:none}
/* section 2: the full constituent set and the counts */
.tm .tm-full{margin:16px 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.tm .tm-full summary{cursor:pointer;padding:10px 0;font-weight:600;font-size:.95rem}
.tm .tm-full summary:hover{color:var(--accent)}
.tm .tm-full .tbl{margin-top:4px}
.tm #s2-full td.sp{font-family:var(--f-body);color:var(--ink-2);text-align:left}
.tm #s2-full td.what{font-family:var(--f-body);text-align:left;white-space:normal;min-width:16em}
.tm #s2-full th:nth-child(5),.tm #s2-full th:nth-child(6){text-align:left}
.tm #s2-full tr.fig-row td{color:var(--ink);font-weight:500}
.tm .pill.figmark{border:1px solid var(--accent);color:var(--accent);font-size:.66rem;padding:0 5px;vertical-align:1px}
.tm .tm-sub{margin:26px 0 4px;font-size:1.15rem}
.tm .tm-counts{margin:.4em 0 .8em;padding-left:1.2em;font-size:.95rem}
.tm .tm-counts li{margin:.3em 0}
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