/* Shared technician mobile shell: topbar + 5-item bottom navigation. */
.tech-topbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in srgb, var(--bg-1) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
}

.tech-topbar__logo img {
  height: 26px;
  width: auto;
  display: block;
}

.tech-topbar__title {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

.tech-topbar__title strong {
  color: var(--ink-1);
  font-size: var(--fs-base);
}

.tech-topbar__title small {
  color: var(--ink-3);
  font-size: var(--fs-xs);
}

.tech-topbar .theme-toggle {
  width: 36px;
  height: 36px;
  font-size: 16px;
}

.tech-nav {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  background: color-mix(in srgb, var(--bg-1) 95%, transparent);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  padding: 8px max(12px, env(safe-area-inset-left)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-right));
  position: sticky;
  bottom: 0;
  z-index: 30;
}

.tech-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 4px;
  color: var(--ink-3);
  text-decoration: none;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
  min-height: 48px;
  cursor: pointer;
}

.tech-nav__item .icon {
  font-size: 22px;
  line-height: 1;
}

.tech-nav__item:hover {
  color: var(--ink-1);
  background: var(--bg-2);
  text-decoration: none;
}

.tech-nav__item[aria-current="page"] {
  color: var(--brand-500);
}

.tech-nav--fixed {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  border-radius: 16px 16px 0 0;
  border-top: 1px solid var(--border);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.tech-nav--fixed .tech-nav__item {
  min-height: 54px;
}