/* Oytel component: global header */

.oytel-header {
  --header-text: var(--oytel-color-text-inverse);
  --header-icon-bg: rgba(255, 255, 255, 0.15);
  --header-icon-border: rgba(255, 255, 255, 0.3);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--oytel-z-header);
  background: transparent;
  border-bottom: 1px solid transparent;
  color: var(--header-text);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, backdrop-filter 0.2s ease;
}


.oytel-header--scrolled {
  --header-text: var(--oytel-color-text-primary);
  --header-icon-bg: var(--oytel-color-surface-card);
  --header-icon-border: var(--oytel-color-border-default);
  background: var(--oytel-color-surface-canvas);
  border-bottom-color: var(--oytel-color-border-default);
  box-shadow: var(--oytel-shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

[data-surface="trip"] .oytel-header {
  --header-text: var(--oytel-color-text-inverse);
  --header-icon-bg: color-mix(in srgb, var(--oytel-color-surface-dark) 80%, transparent);
  background: var(--oytel-color-surface-dark);
  border-bottom-color: color-mix(in srgb, var(--oytel-color-text-inverse) 12%, transparent);
}

.oytel-header:not(.oytel-header--scrolled) .oytel-logo__mark {
  filter: brightness(0) invert(1);
}

.oytel-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--oytel-spacing-lg);
  padding-block: var(--oytel-spacing-md);
}

.oytel-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--oytel-spacing-sm);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--header-text);
}

.oytel-logo__mark {
  width: 22px;
  height: 22px;
  display: block;
  background: none;
}

.oytel-navigation {
  display: flex;
  align-items: center;
  gap: var(--oytel-spacing-lg);
  flex: 1;
  justify-content: center;
}

.oytel-navigation a {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--header-text);
  padding: var(--oytel-spacing-sm) 0;
  border-bottom: 2px solid transparent;
}

.oytel-navigation a:hover {
  color: var(--header-text);
  border-bottom-color: var(--header-text);
  opacity: 0.85;
}

.oytel-header__actions {
  display: flex;
  align-items: center;
  gap: var(--oytel-spacing-sm);
}

.oytel-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--oytel-radius-button);
  background: var(--header-icon-bg);
  border: 1px solid var(--header-icon-border);
  color: var(--header-text);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

@media (max-width: 900px) {
  .oytel-navigation {
    display: none;
  }
}