/* Base layout: reset, typography, header, navigation, footer, page title band, grid.
   Mobile first; the main desktop switch is 900px, as on the live site. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
img, svg { max-width: 100%; height: auto; }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-heading); line-height: 1.2; font-weight: 600; margin: 0 0 var(--space-3); }
h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-brand-text); text-underline-offset: 2px; }
a:hover { color: var(--color-brand-hover); }

/* Accessibility: one clear focus style everywhere, and a skip link */
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; border-radius: 2px; }
.site-footer :focus-visible { outline-color: var(--color-on-dark); }
.skip-link {
  position: absolute; left: var(--gutter); top: -100px; z-index: 100;
  background: var(--color-dark); color: var(--color-on-dark); padding: var(--space-2) var(--space-3);
  border-radius: var(--radius); font-weight: 600; text-decoration: none;
}
.skip-link:focus { top: var(--space-2); color: var(--color-on-dark); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; margin: -1px;
}

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gutter); }
.site-main { flex: 1 0 auto; }
.section { padding-top: var(--space-5); padding-bottom: var(--space-5); }
.section--alt { background: var(--color-bg-alt); }

/* Header (live: white background, logo left, search, nav right with dividers) */
.site-header { background: var(--color-bg); border-bottom: 1px solid var(--color-border); position: relative; z-index: 10; }
.site-header__inner { display: flex; align-items: center; gap: var(--space-3); min-height: 72px; flex-wrap: wrap; }
.site-logo { display: inline-flex; flex-shrink: 0; }
.site-logo img { display: block; height: 44px; width: auto; }
.header-search { display: none; flex: 1 1 auto; max-width: 320px; position: relative; }
.header-search input {
  width: 100%; border: 0; border-left: 1px solid var(--color-border); padding: var(--space-2) 40px var(--space-2) var(--space-3);
  font: inherit; color: var(--color-text); background: transparent;
}
.header-search input::placeholder { color: var(--color-muted); }
.header-search button {
  position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  border: 0; background: none; padding: var(--space-2); color: var(--color-text); cursor: pointer;
}
.nav-toggle {
  margin-left: auto; display: inline-flex; align-items: center; gap: var(--space-2);
  border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text);
  font: inherit; font-weight: 600; padding: var(--space-2) var(--space-3); border-radius: var(--radius); cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; }

.primary-nav { display: none; width: 100%; padding-bottom: var(--space-3); }
.primary-nav.is-open { display: block; }
.primary-nav ul { list-style: none; margin: 0; padding: 0; }
.primary-nav a, .submenu-toggle {
  display: block; width: 100%; text-align: left; padding: var(--space-2) 0;
  font-family: var(--font-heading); color: var(--color-text); text-decoration: none;
  background: none; border: 0; font-size: 1rem; cursor: pointer;
}
.primary-nav a:hover, .submenu-toggle:hover { color: var(--color-brand-text); }
.primary-nav a[aria-current="page"] { color: var(--color-brand-text); }
.submenu-toggle::after {
  content: ""; display: inline-block; margin-left: 6px; vertical-align: middle;
  border: 4px solid transparent; border-top-color: currentColor; transform: translateY(2px);
}
.submenu { display: none; padding-left: var(--space-3) !important; }
.has-submenu.is-open > .submenu { display: block; }

@media (min-width: 900px) {
  .site-header__inner { flex-wrap: nowrap; min-height: 96px; }
  .site-logo img { height: 50px; }
  .header-search { display: block; }
  .nav-toggle { display: none; }
  .primary-nav { display: block; width: auto; margin-left: auto; padding: 0; }
  .primary-nav > ul { display: flex; align-items: center; }
  .primary-nav > ul > li { position: relative; }
  .primary-nav > ul > li + li { border-left: 1px solid var(--color-border); }
  .primary-nav > ul > li > a, .primary-nav > ul > li > .submenu-toggle { padding: var(--space-2) var(--space-3); font-size: 0.9375rem; }
  .submenu {
    position: absolute; top: 100%; left: 0; min-width: 220px; padding: var(--space-2) 0 !important;
    background: var(--color-bg); border: 1px solid var(--color-border); border-top: 3px solid var(--color-brand);
    box-shadow: var(--shadow-card-hover);
  }
  .submenu a { padding: var(--space-1) var(--space-3); font-size: 0.9375rem; }
  .has-submenu:hover > .submenu, .has-submenu:focus-within > .submenu { display: block; }
}

/* Page title band (live: light grey band with a large orange title) */
.page-header { background: var(--color-bg-alt); padding: var(--space-5) 0; text-align: center; }
.page-header h1 { color: var(--color-brand-text-large); font-weight: 400; margin: 0; }
.page-header__meta { color: var(--color-muted); margin: var(--space-2) 0 0; }

/* Footer (live: Articles / Contact Us / Follow Us, then copyright and footer menu) */
.site-footer { background: var(--color-dark); color: var(--color-on-dark); margin-top: var(--space-6); font-size: var(--font-size-small); }
.site-footer a { color: var(--color-on-dark); }
.site-footer a:hover { color: var(--color-brand); }
.site-footer h2 { color: var(--color-on-dark); font-size: 1.0625rem; margin-bottom: var(--space-2); }
.footer-widgets { display: grid; gap: var(--space-4); padding: var(--space-5) 0 var(--space-4); }
.footer-widgets p { margin: 0 0 var(--space-1); }
.footer-social { display: inline-flex; align-items: center; gap: var(--space-2); }
.footer-social svg { width: 28px; height: 28px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.15); padding: var(--space-3) 0; display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); align-items: center; justify-content: space-between; }
.footer-menu { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-3); }
.footer-logo img { height: 72px; width: auto; display: block; }
@media (min-width: 740px) { .footer-widgets { grid-template-columns: repeat(3, 1fr); } }

/* Grid (live switch at 900px) */
.grid { display: grid; gap: var(--space-4); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 740px) { .grid--2, .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 900px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }
.layout-sidebar { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }
@media (min-width: 900px) { .layout-sidebar { grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); } }

/* Health page (kept from M1) */
.status-list { list-style: none; padding: 0; }
.status-list li { padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); background: var(--color-bg-alt); margin-bottom: var(--space-2); }
.status-ok { color: var(--color-success); font-weight: 600; }
.status-fail { color: var(--color-error); font-weight: 600; }

/* Without JavaScript the mobile menu is simply shown in full. */
.no-js .nav-toggle { display: none; }
.no-js .primary-nav { display: block; }
.no-js .submenu { display: block; }
@media (min-width: 900px) { .no-js .submenu { display: none; } }