/* Shared header + footer (see site-shell.js). Self-contained tokens so any
   page can use it without style.css. */
#site-header, #site-footer {
  --sh-text: #eaf6ff;
  --sh-dim: #9fb6d9;
  --sh-cyan: #27d3ff;
  --sh-line: rgba(39, 211, 255, 0.22);
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--sh-text);
}

#site-header { min-height: 66px; position: relative; z-index: 50; background: rgba(4, 10, 30, 0.82); border-bottom: 1px solid var(--sh-line); backdrop-filter: blur(6px); }

.sh-inner, .sf-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.sh-inner { justify-content: space-between; }

.sh-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; flex: none; }
.sh-logo { filter: drop-shadow(0 0 8px rgba(39, 211, 255, 0.55)); flex: none; }
.sh-brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.sh-brand-text strong { font-family: 'Space Grotesk', sans-serif; font-size: 18px; font-weight: 700; }
.sh-brand-text small { font-size: 12px; color: var(--sh-dim); }

.sh-nav, .sf-nav { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
/* 18px between header links (the footer keeps 22px) so all eleven fit on one
   row inside the 1200px header. */
.sh-nav { margin: 0 auto; gap: 18px; }

.sh-nav a, .sf-nav a {
  color: var(--sh-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.sh-nav a:hover, .sf-nav a:hover { color: var(--sh-cyan); }
.sh-nav a.is-active, .sf-nav a.is-active { color: var(--sh-cyan); border-bottom-color: var(--sh-cyan); }

.sh-tip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 9px 18px;
  border: 1.5px solid var(--sh-cyan);
  border-radius: 10px;
  color: var(--sh-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 0 14px rgba(39, 211, 255, 0.28), inset 0 0 10px rgba(39, 211, 255, 0.12);
  transition: box-shadow 0.15s ease, background 0.15s ease;
}
.sh-tip:hover { background: rgba(39, 211, 255, 0.12); box-shadow: 0 0 20px rgba(39, 211, 255, 0.45); }

.sh-burger {
  display: none;
  flex: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sh-line);
  border-radius: 10px;
  background: transparent;
  color: var(--sh-text);
  cursor: pointer;
  padding: 0;
}

#site-header a:focus-visible, #site-header button:focus-visible,
#site-footer a:focus-visible {
  outline: 2px solid var(--sh-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

#site-footer { margin-top: 24px; background: rgba(3, 8, 24, 0.9); border-top: 1px solid var(--sh-line); }
.sf-inner { justify-content: space-between; padding-top: 18px; padding-bottom: 14px; }
.sf-nav { gap: 22px; }
.sf-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px 22px;
  border-top: 1px solid var(--sh-line);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--sh-dim);
}
.sf-bottom a { color: var(--sh-dim); text-decoration: none; }
.sf-bottom a:hover { color: var(--sh-cyan); }
.sf-sep { opacity: 0.5; }
/* "Counting since ... · Day N": its own line under the legal links. */
.sf-since { flex-basis: 100%; text-align: center; font-size: 12.5px; opacity: 0.85; }

/* The header nav needs about 1160px to fit on one line, so below 1240px it
   collapses behind the menu button instead of wrapping onto a second row. */
@media (max-width: 1239px) {
  .sh-inner { flex-wrap: wrap; }
  .sh-brand { margin-right: auto; }
  .sh-burger { display: inline-flex; }
  .sh-nav { display: none; order: 5; width: 100%; margin: 0; flex-direction: column; align-items: flex-start; gap: 4px; padding: 6px 0 10px; }
  .sh-nav.is-open { display: flex; }
  .sh-nav a { width: 100%; padding: 10px 2px; font-size: 15px; }
}

@media (max-width: 820px) {
  .sh-inner { gap: 8px; padding-left: 14px; padding-right: 14px; }
  .sh-brand { gap: 9px; min-width: 0; }
  .sh-brand .sh-logo { width: 36px; height: 36px; }
  .sh-brand-text strong { font-size: 15px; }
  .sh-brand-text small { font-size: 11px; }
  .sh-tip { padding: 8px 12px; }
  .sf-inner { flex-direction: column; align-items: flex-start; }
}

/* Below this the "Tip Us" label no longer fits beside the brand and the menu
   button, so the button shows its icon only. */
@media (max-width: 420px) {
  .sh-tip span { display: none; }
  .sh-tip { padding: 9px 11px; }
}

/* Narrowest phones: tighten the brand so logo, Tip Us and the menu button
   stay on one row. */
@media (max-width: 350px) {
  .sh-inner { gap: 6px; padding-left: 10px; padding-right: 10px; }
  .sh-brand { gap: 7px; }
  .sh-brand .sh-logo { width: 32px; height: 32px; }
  .sh-brand-text strong { font-size: 13.5px; }
  .sh-tip { padding: 8px; }
}