/* Calculators: the map of tools on tools.html (components/page-tools.jsx) and the page shell of each
   calculator page, *-calculator.html (components/tools-ui.jsx). fuel-cell-calculator.html uses fuelcell.css.
   Class-based so the inline-style overrides in responsive.css don't apply. Load after responsive.css.
   --tl-accent is the tool group's colour, set on the element. */

/* ─── tools.html: the tools, by group ─────────────────────────────────── */
.tl-map{padding:64px 0 72px}
.tl-groups{display:flex;flex-direction:column;gap:56px}
.tl-group-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px 32px;
  padding-bottom:14px;margin-bottom:20px;border-bottom:1px solid var(--line)}
.tl-group-title{font-size:clamp(26px,2.6vw,34px);font-weight:400;margin:0;line-height:1.1}
.tl-group-title::before{content:'';display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--tl-accent);
  margin-right:14px;vertical-align:middle;position:relative;top:-3px}
.tl-group-note{font-size:14px;line-height:1.5;color:var(--ink-mute);margin:0;max-width:56ch}
.tl-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px}

.tl-card{display:flex;flex-direction:column;gap:10px;min-width:0;padding:22px 24px 20px;border-radius:4px;
  background:var(--bg-card);border:1px solid var(--line);border-top:3px solid var(--tl-accent);
  color:var(--ink);text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.tl-card:hover{color:var(--ink);transform:translateY(-2px);box-shadow:0 14px 30px -22px rgba(0,0,0,.45);
  border-color:color-mix(in oklab,var(--tl-accent) 45%,var(--line));border-top-color:var(--tl-accent)}
.tl-card:focus-visible{outline:2px solid var(--tl-accent);outline-offset:3px}
/* In the markup the name (h3) comes first; on screen the icon row and the subtitle sit above it */
.tl-card-top{order:-2;display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:4px}
.tl-card-sub{order:-1;margin-bottom:-4px;font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute)}
.tl-tag{flex:none;font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.06em;white-space:nowrap;
  color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:2px 8px}
.tl-card-name{display:block;font-size:30px;font-weight:400;line-height:1.08;letter-spacing:-.01em;margin:0;color:inherit}
/* Tool icons (ToolIcon in tools-ui.jsx): line drawings in a tint of the group colour */
.tl-card-icon,.tl-stage-icon{display:inline-flex;align-items:center;justify-content:center;flex:none;width:46px;height:46px;border-radius:50%;
  color:color-mix(in oklab,var(--tl-accent) 72%,var(--ink));background:color-mix(in oklab,var(--tl-accent) 15%,var(--bg-card))}
.tl-icon{display:block;flex:none}
.tl-card-blurb{display:block;flex:1;font-size:14.5px;line-height:1.55;color:var(--ink-soft)}
.tl-card-go{display:block;margin-top:6px;font-size:13px;font-weight:600;color:var(--ink)}
.tl-card-go span{display:inline-block;transition:transform .15s ease}
.tl-card:hover .tl-card-go span{transform:translateX(4px)}

/* ─── tools.html: "Where each calculator fits" (the value-chain infographic) ─── */
.tl-chain{padding:64px 0 8px}
.tl-chain-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:10px 56px;align-items:end;margin-bottom:28px}
.tl-chain-eyebrow{color:var(--petal-blue)}
.tl-chain-title{font-size:clamp(30px,3.2vw,44px);font-weight:400;line-height:1.05;margin:0;color:inherit}
.tl-chain-lead{grid-column:2;grid-row:1/3;align-self:end;font-size:16px;line-height:1.6;color:var(--ink-soft);margin:0;max-width:60ch}
.tl-chain-fig{margin:0}
.tl-chain-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px 32px}
.tl-stage{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:8px;min-width:0;padding:22px 24px;
  background:var(--bg-card);border:1px solid var(--line);border-top:3px solid var(--tl-accent);border-radius:4px}
.tl-stage .tl-stage-icon{width:56px;height:56px;margin-bottom:4px}
/* Chevrons: across between the first three steps, then down into "Use" */
.tl-stage::after,.tl-stage-use::before{content:'';position:absolute;width:12px;height:12px;
  border-top:2px solid var(--ink-mute);border-right:2px solid var(--ink-mute)}
.tl-stage::after{top:44px;right:-24px;transform:rotate(45deg)}
.tl-stage:nth-child(3)::after,.tl-stage-use::after{display:none}
.tl-stage-use::before{top:-26px;left:50%;margin-left:-6px;transform:rotate(135deg)}
.tl-stage-step{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute)}
.tl-stage-title{font-size:26px;font-weight:400;line-height:1.1;margin:0;color:inherit}
.tl-stage-text{font-size:14.5px;line-height:1.55;color:var(--ink-soft);margin:0}
.tl-chain-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px}
.tl-chain-link{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.2;
  color:var(--ink);text-decoration:none;background:color-mix(in oklab,var(--tl-accent) 12%,var(--bg-card));
  border:1px solid color-mix(in oklab,var(--tl-accent) 50%,var(--line));transition:background .15s ease}
.tl-chain-link:hover{color:var(--ink);background:color-mix(in oklab,var(--tl-accent) 28%,var(--bg-card))}
.tl-chain-link:focus-visible{outline:2px solid var(--tl-accent);outline-offset:2px}
.tl-chain-link span{display:inline-block;transition:transform .15s ease}
.tl-chain-link:hover span{transform:translateX(3px)}
.tl-stage-use{grid-column:1/-1;padding:18px 24px 22px}
.tl-uses{list-style:none;margin:6px 0 0;padding:0;width:100%;display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.tl-use{display:flex;align-items:stretch;gap:16px;min-width:0;padding:6px 24px}
.tl-use:first-child{padding-left:0}
.tl-use:last-child{padding-right:0}
.tl-use + .tl-use{border-left:1px solid var(--line)}
.tl-use .tl-use-icon{align-self:flex-start}
.tl-use-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.tl-use-title{font-size:21px;font-weight:400;line-height:1.15;margin:0;color:inherit}
.tl-use-text{font-size:14px;line-height:1.5;color:var(--ink-soft);margin:0}
.tl-use .tl-chain-links{margin-top:0}
.tl-chain-cap{font-size:12.5px;line-height:1.5;color:var(--ink-mute);margin-top:14px}

/* ─── tools.html: the H2C0 fuel cell systems, with photos ──────────────── */
.tl-prod{padding:0 0 64px}
.tl-prod-box{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) minmax(0,.8fr);gap:28px;align-items:end;
  padding:32px;background:var(--bg-card);border:1px solid var(--line);border-top:3px solid var(--petal-green);border-radius:4px}
.tl-prod-copy{align-self:center}
.tl-prod-eyebrow{color:var(--petal-green);margin-bottom:12px}
.tl-prod-title{font-size:clamp(28px,2.8vw,38px);font-weight:400;line-height:1.08;margin:0 0 14px;color:inherit}
.tl-prod-text{font-size:15px;line-height:1.6;color:var(--ink-soft);margin:0;max-width:48ch}
.tl-prod-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tl-prod-fig{margin:0;display:flex;flex-direction:column;gap:12px;min-width:0}
.tl-prod-img{display:flex;align-items:center;justify-content:center;height:240px;padding:14px;background:#fff;
  border:1px solid var(--line);border-radius:4px;overflow:hidden}
.tl-prod-img img{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}
.tl-prod-cap{font-size:13.5px;line-height:1.45;color:var(--ink-soft)}
.tl-prod-cap strong{display:block;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:3px}

/* ─── A calculator page ────────────────────────────────────────────────── */
.tl-hero{padding:36px 0 40px;border-bottom:1px solid var(--line)}
.tl-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-mute);margin-bottom:28px}
.tl-crumbs a{color:var(--ink-soft);text-decoration:none;border-bottom:1px solid var(--line)}
.tl-crumbs a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.tl-hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:56px;align-items:end}
.tl-eyebrow{color:var(--tl-accent);margin-bottom:16px}
.tl-h1{font-size:clamp(40px,4.6vw,68px);font-weight:340;line-height:1;letter-spacing:-.025em;margin:0}
.tl-h1 em{color:var(--tl-accent)}
.tl-lead{font-size:17px;line-height:1.6;color:var(--ink-soft);margin:0;max-width:56ch}
.tl-calc{padding:48px 0 72px}

/* The other calculators, at the foot of a calculator page */
.tl-more{padding:0 0 56px}
.tl-more-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding-top:28px;margin-bottom:16px;border-top:1px solid var(--line)}
.tl-more-title{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute);margin:0}
.tl-more-all{font-size:13px;font-weight:600;color:var(--ink);text-decoration:none;white-space:nowrap}
.tl-more-all:hover{color:var(--accent)}
.tl-more-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.tl-mini{display:flex;align-items:flex-start;gap:12px;min-width:0;padding:13px 16px;border-radius:4px;background:var(--bg-card);
  border:1px solid var(--line);border-left:3px solid var(--tl-accent);color:var(--ink);text-decoration:none;
  transition:border-color .15s ease,transform .15s ease}
.tl-mini:hover{color:var(--ink);transform:translateY(-1px);border-color:color-mix(in oklab,var(--tl-accent) 45%,var(--line));border-left-color:var(--tl-accent)}
.tl-mini:focus-visible{outline:2px solid var(--tl-accent);outline-offset:2px}
.tl-mini > .tl-icon{margin-top:2px;color:color-mix(in oklab,var(--tl-accent) 72%,var(--ink))}
.tl-mini-text{display:block;min-width:0}
.tl-mini strong{display:block;font-size:14px;font-weight:600}
.tl-mini-text span{display:block;font-size:12px;line-height:1.4;color:var(--ink-mute);margin-top:2px}

/* "Need a full techno-economic study?" at the foot of tools.html and each calculator page */
.tl-cta{padding:0 0 120px}
.tl-cta-box{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:48px;align-items:center;padding:40px 56px;
  background:var(--bg-card);border:1px solid var(--line);border-radius:4px}
.tl-cta-title{font-size:32px;font-weight:400;line-height:1.15;margin:0 0 12px;color:inherit}
.tl-cta-text{font-size:15px;line-height:1.6;color:var(--ink-soft);margin:0;max-width:52ch}
.tl-cta-actions{display:flex;flex-direction:column;gap:10px}
.tl-cta-actions .btn{justify-content:center}

@media (max-width: 1100px){
  .tl-prod-box{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tl-prod-copy{grid-column:1/-1}
}
@media (max-width: 900px){
  .tl-hero-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .tl-more-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tl-chain-head{grid-template-columns:minmax(0,1fr)}
  .tl-chain-lead{grid-column:auto;grid-row:auto}
}
@media (max-width: 768px){
  .tl-groups{gap:44px}
  .tl-card-name{font-size:26px}
  .tl-crumbs{margin-bottom:20px}
  .tl-lead{font-size:16px}
  .tl-cta-box{grid-template-columns:minmax(0,1fr);gap:24px;padding:28px 24px}
  .tl-cta-title{font-size:28px}
  /* responsive.css gives every section 48px top and bottom on phones; close up the gaps between these */
  section.tl-chain{padding-bottom:12px !important}
  section.tl-prod,section.tl-cta{padding-top:0 !important}
  /* Infographic: one column, icon beside the text, chevrons pointing down */
  .tl-chain-steps{grid-template-columns:minmax(0,1fr);gap:30px}
  .tl-stage{display:grid;grid-template-columns:44px minmax(0,1fr);gap:4px 14px;align-items:start;padding:16px 18px}
  .tl-stage > *{grid-column:2}
  .tl-stage .tl-stage-icon{grid-column:1;grid-row:1/span 4;width:44px;height:44px;margin:0}
  .tl-stage .tl-stage-icon .tl-icon{width:24px;height:24px}
  .tl-stage-title{font-size:22px}
  .tl-stage-text{font-size:14px}
  .tl-chain-links{padding-top:6px}
  .tl-stage::after{top:auto;bottom:-23px;right:auto;left:50%;margin-left:-6px;transform:rotate(135deg)}
  .tl-stage-use::before{top:-22px}
  .tl-stage-use{display:block;padding:16px 18px 6px}
  .tl-uses{grid-template-columns:minmax(0,1fr);margin-top:4px}
  .tl-use{padding:14px 0}
  .tl-use + .tl-use{border-left:0;border-top:1px solid var(--line)}
  .tl-use-title{font-size:20px}
  .tl-prod-box{padding:22px 20px;gap:20px}
}
@media (max-width: 560px){
  .tl-more-grid{grid-template-columns:minmax(0,1fr)}
  .tl-prod-box{grid-template-columns:minmax(0,1fr)}
  .tl-prod-img{height:210px}
  .tl-prod-actions .btn{flex:1 1 auto;justify-content:center}
}