/* Mode menu — replaces the old 4-tab row. One trigger + a menu that is an
   anchored dropdown on desktop and a bottom sheet on mobile. */

.mode-menu {
  position: relative;
  margin-bottom: var(--space-6);
}

/* Trigger — bordered button, more visible than the old tab row but still quiet. */
.mode-menu__trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  min-height: 2.25rem;
}

.mode-menu__trigger:hover {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.mode-menu__chevron {
  transition: transform 0.2s ease;
}

.mode-menu.is-open .mode-menu__chevron {
  transform: rotate(180deg);
}

/* Backdrop — full viewport, catches outside-click. Transparent on desktop,
   dimmed on mobile. Sits above the FAB (z-index 50). */
.mode-menu__backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: transparent;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.mode-menu.is-open .mode-menu__backdrop {
  opacity: 1;
  visibility: visible;
}

/* Panel — anchored dropdown on desktop. */
.mode-menu__panel {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 61;
  min-width: 14rem;
  margin-top: var(--space-1);
  padding: 0;
  list-style: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.mode-menu.is-open .mode-menu__panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Sheet head — hidden on desktop, shown on mobile. */
.mode-menu__sheet-head {
  display: none;
}

/* Menu items — full-width links, border-separated, invert on hover. */
.mode-menu__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.mode-menu__item:last-child {
  border-bottom: none;
}

.mode-menu__item:hover,
.mode-menu__item:focus {
  background: var(--color-text);
  color: var(--color-bg);
  outline: none;
}

.mode-menu__item.is-current {
  font-weight: 600;
}

.mode-menu__check {
  flex-shrink: 0;
}

/* Mobile — bottom sheet. */
@media (max-width: 640px) {
  .mode-menu__backdrop {
    background: rgba(26, 26, 26, 0.4);
  }

  .mode-menu__panel {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    min-width: auto;
    margin-top: 0;
    border: none;
    border-top: 1px solid var(--color-border);
    border-radius: 0;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(100%);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .mode-menu.is-open .mode-menu__panel {
    transform: translateY(0);
  }

  .mode-menu__sheet-head {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-4) var(--space-3);
    border-bottom: 1px solid var(--color-border);
  }

  .mode-menu__grabber {
    display: block;
    width: 2rem;
    height: 3px;
    background: var(--color-text-muted);
    margin: 0 auto var(--space-3);
  }

  .mode-menu__title {
    flex: 1;
    margin: 0;
    font-size: var(--text-base);
    font-weight: 600;
  }

  .mode-menu__close {
    background: none;
    border: none;
    padding: var(--space-1);
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    cursor: pointer;
    line-height: 1;
  }

  .mode-menu__close:hover {
    color: var(--color-text);
  }

  .mode-menu__item {
    padding: var(--space-4);
    min-height: 3rem;
  }
}

/* Body scroll lock while menu is open. */
body.mode-menu-open {
  overflow: hidden;
}