/* Tab activation rules — all tab systems across the site.
   Pattern: #id:checked highlights its label and shows its content panel. */

/* default.html: research/olympiad subject tabs */
#tab-math:checked ~ .tab-labels label[for="tab-math"],
#tab-comp:checked ~ .tab-labels label[for="tab-comp"],
#tab-phys:checked ~ .tab-labels label[for="tab-phys"],
#tab-chem:checked ~ .tab-labels label[for="tab-chem"],
#tab-bio:checked ~ .tab-labels label[for="tab-bio"],
#tab-astro:checked ~ .tab-labels label[for="tab-astro"] {
  color: #0969da;
  border-bottom-color: #0969da;
}
#tab-math:checked ~ #content-math,
#tab-comp:checked ~ #content-comp,
#tab-phys:checked ~ #content-phys,
#tab-chem:checked ~ #content-chem,
#tab-bio:checked ~ #content-bio,
#tab-astro:checked ~ #content-astro {
  display: block;
}

#oly-math:checked ~ .tab-labels label[for="oly-math"],
#oly-comp:checked ~ .tab-labels label[for="oly-comp"],
#oly-phys:checked ~ .tab-labels label[for="oly-phys"],
#oly-chem:checked ~ .tab-labels label[for="oly-chem"],
#oly-bio:checked ~ .tab-labels label[for="oly-bio"],
#oly-astro:checked ~ .tab-labels label[for="oly-astro"] {
  color: #0969da;
  border-bottom-color: #0969da;
}
#oly-math:checked ~ #oly-content-math,
#oly-comp:checked ~ #oly-content-comp,
#oly-phys:checked ~ #oly-content-phys,
#oly-chem:checked ~ #oly-content-chem,
#oly-bio:checked ~ #oly-content-bio,
#oly-astro:checked ~ #oly-content-astro {
  display: block;
}

/* IR Spectroscopy: representative samples */
#tab-acetone:checked ~ .tab-labels label[for="tab-acetone"],
#tab-water:checked ~ .tab-labels label[for="tab-water"],
#tab-salt:checked ~ .tab-labels label[for="tab-salt"],
#tab-plastic:checked ~ .tab-labels label[for="tab-plastic"],
#tab-sugar:checked ~ .tab-labels label[for="tab-sugar"] {
  color: #0969da;
  border-bottom-color: #0969da;
}
#tab-acetone:checked ~ #content-acetone,
#tab-water:checked ~ #content-water,
#tab-salt:checked ~ #content-salt,
#tab-plastic:checked ~ #content-plastic,
#tab-sugar:checked ~ #content-sugar {
  display: block;
}

/* IR Spectroscopy: household categories */
#cat-solvents:checked ~ .cat-tab-labels label[for="cat-solvents"],
#cat-food:checked ~ .cat-tab-labels label[for="cat-food"],
#cat-personal:checked ~ .cat-tab-labels label[for="cat-personal"],
#cat-polymers:checked ~ .cat-tab-labels label[for="cat-polymers"],
#cat-paper:checked ~ .cat-tab-labels label[for="cat-paper"],
#cat-biological:checked ~ .cat-tab-labels label[for="cat-biological"] {
  color: #0969da;
  border-bottom-color: #0969da;
}
#cat-solvents:checked ~ #content-solvents,
#cat-food:checked ~ #content-food,
#cat-personal:checked ~ #content-personal,
#cat-polymers:checked ~ #content-polymers,
#cat-paper:checked ~ #content-paper,
#cat-biological:checked ~ #content-biological {
  display: block;
}

/* IR Spectroscopy: chemical categories */
#chem-oh:checked ~ .chem-tab-labels label[for="chem-oh"],
#chem-ch:checked ~ .chem-tab-labels label[for="chem-ch"],
#chem-co:checked ~ .chem-tab-labels label[for="chem-co"],
#chem-mixed:checked ~ .chem-tab-labels label[for="chem-mixed"],
#chem-cellulose:checked ~ .chem-tab-labels label[for="chem-cellulose"],
#chem-protein:checked ~ .chem-tab-labels label[for="chem-protein"],
#chem-ionic:checked ~ .chem-tab-labels label[for="chem-ionic"] {
  color: #0969da;
  border-bottom-color: #0969da;
}
#chem-oh:checked ~ #content-chem-oh,
#chem-ch:checked ~ #content-chem-ch,
#chem-co:checked ~ #content-chem-co,
#chem-mixed:checked ~ #content-chem-mixed,
#chem-cellulose:checked ~ #content-chem-cellulose,
#chem-protein:checked ~ #content-chem-protein,
#chem-ionic:checked ~ #content-chem-ionic {
  display: block;
}