/* Shared top navigation for both tuition pages. Colors come from the
   tokens each page defines, so light and dark themes follow along. */
.sitenav{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow);}
.sitenav-inner{max-width:1300px;margin:0 auto;padding:8px 16px;display:grid;
  grid-template-columns:1fr auto;grid-template-areas:"brand theme" "tabs tabs";gap:8px;align-items:center;}
.sitenav-brand{grid-area:brand;display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);
  font-family:var(--display);font-weight:800;font-size:18px;letter-spacing:-.01em;}
.sitenav-brand img{width:32px;height:32px;border-radius:8px;}
.sitenav-tabs{grid-area:tabs;display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--surface-2);
  border:1px solid var(--line);border-radius:12px;padding:4px;}
.sitenav-tabs a{display:flex;align-items:center;justify-content:center;min-height:48px;padding:0 16px;border-radius:9px;
  text-decoration:none;font-family:var(--ui);font-size:16px;font-weight:600;color:var(--ink-2);}
.sitenav-tabs a:hover{color:var(--ink);background:var(--surface);}
.sitenav-tabs a[aria-current="page"]{background:var(--accent);color:var(--on-accent);}
.sitenav-tabs a:focus-visible,.sitenav-theme:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.sitenav-theme{grid-area:theme;width:48px;height:48px;display:flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);cursor:pointer;padding:0;}
.sitenav-theme:hover{color:var(--ink);border-color:var(--accent);}
.sitenav-theme .icon-sun{display:none;}
:root[data-effective-theme="dark"] .sitenav-theme .icon-sun{display:block;}
:root[data-effective-theme="dark"] .sitenav-theme .icon-moon{display:none;}
.sitenav-tabs a{white-space:nowrap;}
@media (max-width:420px){.sitenav-tabs a{padding:0 8px;font-size:15px;}}
@media (min-width:760px){
  .sitenav-inner{grid-template-columns:auto 1fr auto;grid-template-areas:"brand tabs theme";gap:24px;}
  .sitenav-tabs{max-width:440px;justify-self:center;width:100%;}
}
@media print{.sitenav{display:none !important;}}