#site-header {
  display: block;
  min-height: 64px;
}

#site-header.site-chrome-header {
  --header-bg: rgba(255, 255, 255, 0.92);
  --header-border: #e4eaf2;
  --header-primary: #0b5cad;
  --header-primary-soft: #e8f2ff;
  --header-text-muted: #65758b;
  --header-panel: #ffffff;
  --header-tg: #0088cc;
  --header-tg-soft: rgba(0, 136, 204, 0.12);

  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

[data-theme="dark"] #site-header.site-chrome-header {
  --header-bg: rgba(16, 20, 28, 0.92);
  --header-border: #2c384a;
  --header-primary: #68adf4;
  --header-primary-soft: rgba(104, 173, 244, 0.16);
  --header-text-muted: #a8b5c7;
  --header-panel: #171d29;
  --header-tg: #5cc8ff;
  --header-tg-soft: rgba(92, 200, 255, 0.14);
}

#site-header .header-wrap {
  container-name: headbar;
  container-type: inline-size;
  padding: 0.75rem 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.35rem, 0.8vw, 0.65rem);
  flex-wrap: nowrap;
}

#site-header .header-mid {
  display: flex;
  align-items: center;
  gap: clamp(0.25rem, 0.6vw, 0.5rem);
  flex: 1 1 auto;
  min-width: 0;
  justify-content: center;
}

#site-header .header-top-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

#site-header .logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
  min-width: 0;
}

#site-header .logo svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  color: var(--header-text-muted);
}

#site-header .logo-text {
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(1rem, 0.95rem + 0.35vw, 1.125rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--header-text-muted);
  white-space: nowrap;
}

#site-header .logo-accent {
  color: var(--header-primary);
}

#site-header .tg-link-header,
#site-header .mail-link-header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.16s ease;
  flex-shrink: 0;
}

#site-header .tg-link-header {
  color: var(--header-tg);
  background: var(--header-tg-soft);
  padding: 0.5rem 0.85rem;
  font-size: clamp(0.7rem, 0.65rem + 0.35vw, 0.82rem);
  font-weight: 600;
  white-space: nowrap;
}

#site-header .mail-link-header {
  color: var(--header-primary);
  background: var(--header-primary-soft);
  padding: 0.5rem 1rem;
  font-size: clamp(0.65rem, 0.6rem + 0.35vw, 0.8rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

#site-header .tg-link-header:hover,
#site-header .mail-link-header:hover {
  opacity: 0.88;
}

#site-header .tg-link-header svg,
#site-header .mail-link-header svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

#site-header .auth-details {
  position: relative;
}

#site-header .auth-summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--header-primary);
  background: var(--header-primary-soft);
  padding: 0.5rem;
  border-radius: 100px;
  border: 1px solid var(--header-border);
}

#site-header .auth-summary::-webkit-details-marker,
#site-header .auth-summary::marker {
  display: none;
  content: "";
}

#site-header .auth-summary svg {
  width: 16px;
  height: 16px;
  display: block;
}

#site-header .auth-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 120;
  width: min(288px, calc(100vw - 2rem));
  padding: 1rem;
  background: var(--header-panel);
  border: 1px solid var(--header-border);
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(18, 38, 63, 0.12);
  text-align: left;
}

#site-header .auth-panel p {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--header-text-muted);
}

#site-header .auth-panel-stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

#site-header .auth-panel-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  color: #fff;
  background: var(--header-primary);
  border: none;
  cursor: pointer;
  font-family: inherit;
  box-shadow: none;
  transform: none;
  filter: none;
}

#site-header .auth-panel-link svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
}

#site-header .auth-panel-link--ghost {
  color: var(--header-primary);
  background: transparent;
  border: 1px solid var(--header-border);
}

#site-header .auth-panel-link--ghost:hover {
  background: var(--header-primary-soft);
}

#site-header .theme-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--header-text-muted);
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
  padding: 0;
  box-shadow: none;
  transform: none;
  filter: none;
}

#site-header .theme-btn:hover {
  background: var(--header-primary-soft);
  color: var(--header-primary);
}

#site-header .theme-btn svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

@media (min-width: 721px) {
  #site-header .header-wrap {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 0.75rem;
  }

  #site-header .header-wrap:not(:has(.header-mid)) {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  #site-header .header-mid {
    flex: unset;
    justify-content: center;
    gap: 0.75rem;
  }
}

@media (max-width: 720px) {
  #site-header {
    min-height: 60px;
  }

  #site-header .logo-text {
    font-size: clamp(0.8rem, 0.72rem + 1.5vw, 0.95rem);
    overflow: hidden;
    text-overflow: ellipsis;
  }

  #site-header .header-link-text,
  #site-header .mail-address {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  #site-header .tg-link-header,
  #site-header .mail-link-header,
  #site-header .auth-summary {
    padding: 0.5rem;
    gap: 0;
  }

  #site-header .theme-btn {
    width: 34px;
    height: 34px;
  }
}