.app-header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 0;
  box-shadow: var(--shadow-raised);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}

.nav-button {
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  background: var(--header-chrome);
  border: 1px solid var(--header-chrome-border);
  color: var(--header-text);
  font-size: 20px;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav-button:hover {
  background: var(--header-chrome-hover);
  transform: scale(1.05);
}

/* Header dropdown — the report editor button opens a choice of editors rather
   than navigating straight to one, since the two are not interchangeable. */
.nav-dropdown {
  position: relative;
  display: flex;
}

/* Over the page, under the menu: any outside click closes it. */
.nav-dropdown-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 101;
  min-width: 220px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-overlay);
  overflow: hidden;
}

.nav-dropdown-menu button {
  display: block;
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  font-family: inherit;
}

.nav-dropdown-menu button + button {
  border-top: 1px solid var(--border);
}

.nav-dropdown-menu button:hover {
  background: var(--surface-hover);
}

.nav-dropdown-menu strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
}

.nav-dropdown-menu span {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  margin-right: 10px;
}

.user-name {
  font-weight: 600;
  font-size: 14px;
}

.user-role {
  font-size: 12px;
  opacity: 0.9;
}

.avatar-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--header-avatar-bg);
  color: var(--header-avatar-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-card);
}

.avatar:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-raised);
}

.logout-button {
  padding: 8px 16px;
  background: var(--header-chrome);
  border: 1px solid var(--header-chrome-border);
  color: var(--header-text);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.logout-button:hover {
  background: var(--header-chrome-hover);
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }

  .header-left h1 {
    font-size: 18px;
    text-align: center;
  }

  .header-right {
    justify-content: space-between;
  }

  .user-info {
    align-items: flex-start;
    margin-right: 0;
  }
}

/* Theme toggle — same chrome as the nav buttons, so it reads as part of the
   header furniture rather than a feature being advertised. */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--header-chrome);
  border: 1px solid var(--header-chrome-border);
  color: var(--header-text);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--header-chrome-hover);
  transform: scale(1.05);
}