/* Layout chrome styling — header, footer, nav, language switcher */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Newsreader', serif;
  font-size: 19px;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name-line1 {
  font-family: 'Newsreader', serif;
  font-size: 17px;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.brand-name-line2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.navlink {
  font-size: 14px;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
  transition: color 0.15s;
}
.navlink:hover { color: var(--ink); }
.navlink.active { color: var(--ink); }
.navlink.active::after {
  content: '';
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.header-tail {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-shrink: 0;
}
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
}
.lang-switch button {
  color: var(--ink-mute);
  padding: 4px 2px;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  transition: color 0.15s;
}
.lang-switch button.on { color: var(--ink); border-bottom: 1px solid var(--ink); }
.lang-switch button:hover { color: var(--ink); }
.lang-sep { color: var(--ink-mute); }

.book-cta {
  padding: 11px 18px;
  font-size: 14px;
}

.hamburger {
  display: none;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
}
.hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
}

.mobile-drawer {
  display: none;
}

@media (max-width: 980px) {
  .site-nav { display: none; }
  .book-cta { display: none; }
  .hamburger { display: flex; }
  .mobile-drawer {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px 22px 28px;
    border-top: 1px solid var(--rule);
    background: var(--bg);
  }
  .mobile-drawer .navlink {
    font-size: 17px;
    padding: 12px 0;
    border-bottom: 1px solid var(--rule);
  }
  .mobile-drawer .navlink.active::after { display: none; }
  .mobile-drawer .btn { margin-top: 14px; align-self: flex-start; }
  .brand-name-line2 { display: none; }
}

/* ───────── Footer ───────── */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--rule);
  padding: 80px 0 24px;
  margin-top: 80px;
}
.site-footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
}
.ft-brand .ft-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-size: 22px;
  margin-bottom: 16px;
}
.ft-doctorname {
  font-size: 22px;
  margin-bottom: 6px;
}
.ft-sub { margin-bottom: 18px; }
.ft-followup {
  font-size: 13px;
  color: var(--ink-mute);
  max-width: 320px;
  line-height: 1.55;
}

.ft-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-soft);
}
.ft-col .eyebrow {
  margin-bottom: 6px;
}
.ft-col a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s, color 0.15s;
  align-self: flex-start;
}
.ft-col a:hover { color: var(--ink); border-color: var(--rule); }
.ft-line { font-size: 14px; line-height: 1.55; }

.ft-newsletter {
  display: flex;
  margin-top: 8px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--bg-card);
  overflow: hidden;
}
.ft-newsletter input {
  border: none;
  background: transparent;
  padding: 10px 14px;
  flex: 1;
  font-size: 13px;
  outline: none;
}
.ft-newsletter button {
  padding: 0 16px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 999px;
  margin: 3px;
}

.ft-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  font-size: 12px;
  color: var(--ink-mute);
}
.ft-bottom-l {
  display: flex;
  align-items: center;
  gap: 14px;
}
.ssl {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ok);
}
.dot-sep { color: var(--ink-mute); }
.ft-bottom-r {
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .site-footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .ft-brand { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .site-footer-inner {
    grid-template-columns: 1fr;
  }
  .ft-bottom { flex-direction: column; gap: 10px; align-items: flex-start; }
}