/* ── Header ── */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-title {
  font-weight: 700;
  font-size: var(--font-md);
  color: var(--text);
}

.site-nav {
  display: flex;
  gap: 1rem;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-left: auto;
}

.nav-link--active {
  text-shadow: 0 0 8px color-mix(in srgb, var(--accent) 60%, transparent);
}

.nav-link--active::before {
  content: "[";
}
.nav-link--active::after {
  content: "]";
}

/* ── Main ── */
main {
  flex: 1;
  padding: 2rem 1rem;
}

.main--centered {
  display: flex;
  align-items: center;
  justify-content: center;
}

.main--gallery {
  padding: 0;
}

@media (max-width: 600px) {
  .header-actions {
    gap: 0.5rem;
  }

  .header-actions .btn {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-sm);
  }
}

/* ── User menu ── */
.user-menu {
  position: relative;
  margin-left: auto;
}

.user-menu__trigger {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-lg);
  color: var(--text);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--duration);
}

.user-menu__trigger:hover {
  background: var(--bg);
}

.user-menu__dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 9rem;
  box-shadow: var(--shadow-sm);
  z-index: var(--z-dropdown);
}

.user-menu__dropdown--open {
  display: block;
}

.user-menu__item {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: var(--font-sm);
  color: var(--text);
  border-radius: var(--radius-sm);
}

.user-menu__item:hover {
  background: var(--bg);
}

.user-menu__separator {
  margin: 0.3rem 0;
  border: none;
  border-top: 1px solid var(--border);
}

.user-menu__version {
  display: block;
  padding: 0.4rem 1rem;
  font-size: var(--font-xs);
  color: var(--text-muted);
  user-select: none;
}

/* ── Bottom tab bar ── */
.bottom-tab-bar {
  display: none; /* hidden on desktop */
}

.bottom-tab-bar-actions {
  display: none; /* hidden on desktop; mobile select-mode overrides below */
}

@media (max-width: 600px) {
  .bottom-tab-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--tab-bar-height);
    background: var(--surface);
    border-top: 1px solid var(--border);
    z-index: var(--z-tabbar);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .bottom-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--font-xs);
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
  }

  .bottom-tab--active {
    color: var(--accent);
  }

  .bottom-tab__icon {
    font-size: var(--font-lg);
    line-height: 1;
  }

  .bottom-tab-bar--select-mode .bottom-tab {
    display: none;
  }

  .bottom-tab-bar-actions {
    display: none;
  }

  .bottom-tab-bar--select-mode + .bottom-tab-bar-actions {
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 0.75rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--tab-bar-height);
    background: var(--surface);
    border-top: 1px solid var(--border);
    z-index: var(--z-tabbar-select);
  }

  .bottom-tab-bar--select-mode + .bottom-tab-bar-actions .bottom-tab-bar__select-cancel,
  .bottom-tab-bar--select-mode + .bottom-tab-bar-actions .bottom-tab-bar__select-count,
  .bottom-tab-bar--select-mode + .bottom-tab-bar-actions .bottom-tab-bar__select-delete {
    display: flex;
    align-items: center;
  }

  .bottom-tab-bar--select-mode + .bottom-tab-bar-actions .bottom-tab-bar__select-count {
    flex: 1;
    text-align: left;
    font-size: var(--font-sm);
    color: var(--text-muted);
  }
}

/* ── Mobile layout ── */
@media (max-width: 600px) {
  body {
    padding-bottom: calc(var(--tab-bar-height) + env(safe-area-inset-bottom));
  }

  .site-nav {
    display: none;
  }

  .site-header {
    display: none;
  }

  :root {
    --header-height: 0px;
  }
}

/* ── Profile panel ── */
.profile-panel {
  display: none;
}

@media (max-width: 600px) {
  .profile-panel {
    display: block;
    position: fixed;
    bottom: calc(var(--tab-bar-height) + env(safe-area-inset-bottom));
    right: 0;
    min-width: 10rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
    box-shadow: var(--shadow-md);
    z-index: var(--z-tabbar);
  }

  .profile-panel__item {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    text-align: left;
    font-size: var(--font-base);
    color: var(--text);
    cursor: pointer;
  }

  .profile-panel__item:hover {
    background: var(--bg);
  }

  .profile-panel__version {
    display: block;
    padding: 0.4rem 1rem 0.75rem;
    font-size: var(--font-xs);
    color: var(--text-muted);
  }

  #profile-tab.bottom-tab--active {
    color: var(--accent);
  }
}

/* ── Back link ── */
.back-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--font-sm);
}

.back-link:hover {
  color: var(--accent);
}