/* ==========================================================================
   FuelWatch chrome — nav, footer, ticker, app tab bar.
   One copy for every page (replaces the per-page duplicated blocks).

   NAV CONTRAST MODEL (inverted vs the old floating pill):
   - Default = white full-width bar with the BLACK logo, for light bands.
   - `.over-dark` = navy bar with the WHITE logo, applied while the bar sits
     over a `[data-nav-contrast="dark"]` band (scroll handler unchanged).
   - Pages whose first band is dark ship `class="nav-wrapper over-dark"` in
     markup so the first paint is correct before JS runs.
   The bar is 64px (56px mobile) — pages offset their first element by that.
   ========================================================================== */

.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0;
  pointer-events: none;
}
.nav-wrapper > nav,
.nav-wrapper > .nav-mobile { pointer-events: auto; }

nav {
  max-width: none;
  margin: 0;
  background: #FFFFFF;
  border: none;
  border-bottom: 1px solid var(--hairline);
  border-radius: 0;
  box-shadow: 0 1px 2px rgba(22, 35, 42, 0.06);
  height: 64px;
  /* Content aligns to the 1080px column without extra markup */
  padding: 0 max(24px, calc((100vw - 1080px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo img { height: 30px; width: auto; }

/* Logo swap — black wordmark on the white bar, white wordmark on navy.
   Two images, never CSS invert (it would recolour the orange tank icon). */
.nav-logo-light { display: none; }
.nav-logo-dark { display: block; }
.nav-wrapper.over-dark .nav-logo-light { display: block; }
.nav-wrapper.over-dark .nav-logo-dark { display: none; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--ink); }

nav a.cta-link {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 9px 18px;
  border-radius: 0;
  transition: background 0.2s;
}
nav a.cta-link:hover { background: var(--accent-press); }

nav a.cta-stations {
  background: transparent;
  color: var(--ink);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 9px 18px;
  border-radius: 0;
  border: 1px solid var(--hairline-strong);
  transition: border-color 0.2s, background 0.2s;
}
nav a.cta-stations:hover { border-color: var(--ink); }

/* -- Navy state (over dark bands) -- */
.nav-wrapper.over-dark nav {
  background: var(--dark-canvas);
  border-bottom-color: var(--dark-hairline);
  box-shadow: none;
}
.nav-wrapper.over-dark .nav-links a { color: rgba(255, 255, 255, 0.72); }
.nav-wrapper.over-dark .nav-links a:hover { color: #fff; }
.nav-wrapper.over-dark nav a.cta-stations {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}
.nav-wrapper.over-dark nav a.cta-stations:hover { border-color: rgba(255, 255, 255, 0.7); }
.nav-wrapper.over-dark .nav-hamburger span { background: #fff; }

/* -- Hamburger -- */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 102;
}
.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  margin: 0 auto;
  border-radius: 0;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger span:nth-child(1) { margin-bottom: 5px; }
.nav-hamburger span:nth-child(3) { margin-top: 5px; }
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* -- Mobile menu: solid full-width panel under the bar -- */
.nav-mobile { display: none; }
.nav-mobile.open { display: flex; }
.nav-mobile a {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  transition: color 0.2s;
  text-align: center;
}
.nav-mobile a:hover { color: var(--accent-text); }
.nav-mobile a.cta-link {
  background: var(--accent);
  color: #fff;
  text-align: center;
  padding: 14px 20px;
  border-radius: 0;
  border-bottom: none;
  margin-top: 8px;
}
.nav-mobile a.cta-stations {
  background: transparent;
  color: var(--ink);
  text-align: center;
  padding: 13px 20px;
  border-radius: 0;
  border: 1px solid var(--hairline-strong);
  margin-top: 8px;
}

@media (max-width: 960px) {
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 11px; white-space: nowrap; }
  nav a.cta-link, nav a.cta-stations { padding: 7px 12px; font-size: 11px; white-space: nowrap; }
  .nav-logo img { height: 26px; }
}

@media (max-width: 768px) {
  nav { height: 56px; padding: 0 16px; }
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
  .nav-mobile {
    background: #FFFFFF;
    border-bottom: 1px solid var(--hairline);
    padding: 4px 20px 16px;
    flex-direction: column;
    gap: 0;
    border-radius: 0;
    margin: 0;
  }
  .nav-wrapper.over-dark .nav-mobile {
    background: var(--dark-canvas);
    border-bottom-color: var(--dark-hairline);
  }
  .nav-wrapper.over-dark .nav-mobile a {
    color: rgba(255, 255, 255, 0.85);
    border-bottom-color: var(--dark-hairline);
  }
  .nav-wrapper.over-dark .nav-mobile a:hover { color: #fff; }
  .nav-wrapper.over-dark .nav-mobile a.cta-link { color: #16232A; }
  .nav-wrapper.over-dark .nav-mobile a.cta-stations {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
  }
}

/* ==========================================================================
   News ticker — mono wire-service strip on navy
   ========================================================================== */

.ticker-wrap {
  position: relative;
  margin-top: 64px;
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--dark-canvas);
  border-top: 1px solid var(--dark-hairline);
  border-bottom: 1px solid var(--dark-hairline);
  overflow: hidden;
  white-space: nowrap;
  padding: 9px 0;
}
.ticker { display: inline-block; animation: ticker-scroll 75s linear infinite; }
.ticker-item {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.75);
  padding: 0 32px;
}
.ticker-label {
  font-family: var(--font-mono);
  color: var(--accent-on-dark);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-right: 10px;
}
@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@media (max-width: 768px) {
  .ticker-wrap { margin-top: 56px; }
}

/* ==========================================================================
   Footer — light, hairline-ruled, mono column eyebrows.
   Covers both markups: index (.footer-grid inside .container) and the
   subpages (.footer-inner wrapper).
   ========================================================================== */

footer {
  background: var(--surface-light);
  padding: 0;
  color: var(--ink-secondary);
  font-size: 14px;
  border-top: 1px solid var(--hairline);
  margin-top: 40px;
}
footer .container { max-width: 1280px; }
.footer-inner { max-width: 1080px; margin: 0 auto; padding: 40px 24px 0; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 48px 0 40px;
}
.footer-inner .footer-grid { padding: 0 0 32px; }
footer .container .footer-grid {
  grid-template-columns: minmax(220px, 2fr) repeat(5, minmax(120px, 1fr));
  align-items: start;
}

.footer-brand img { height: 30px; width: auto; }
.footer-brand p {
  font-size: 14px;
  color: var(--ink-secondary);
  margin-top: 12px;
  line-height: 1.6;
  max-width: 240px;
}

.footer-col h3,
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-secondary);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.45;
  margin-bottom: 10px;
  overflow-wrap: anywhere;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--ink); }
footer .footer-brand, footer .footer-col { min-width: 0; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--ink-secondary);
}
.footer-bottom a { color: var(--ink-secondary); text-decoration: none; font-weight: 500; }
.footer-bottom a:hover { text-decoration: underline; }
.footer-inner .footer-bottom { padding: 20px 0 24px; }

@media (max-width: 1180px) {
  footer .container .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
  footer .container .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  footer .container .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .footer-grid, footer .container .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* ==========================================================================
   App tab bar shim (index + manifesto) — flat, full-width, opaque navy.
   Mirrors the app's flat engineered chrome (no blur, no radius, no float).
   ========================================================================== */

.app-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(56px + env(safe-area-inset-bottom, 0px));
  padding: 0 8px env(safe-area-inset-bottom, 0px);
  background: var(--dark-canvas);
  border: none;
  border-top: 1px solid var(--dark-hairline);
  border-radius: 0;
  box-shadow: none;
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  z-index: 101;
}
.app-tab {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.55);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}
.app-tab:hover,
.app-tab:focus-visible { color: #fff; }
.app-tab-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 22px;
  line-height: 1;
}
.app-tab-label { line-height: 1; }