@use '../../../styles/variables' as *;

.navContainer {
  position: fixed;
  left: var(--content-center-x, 50%);
  bottom: calc(12px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 50;
  pointer-events: auto;
  width: fit-content;
  max-width: calc(100vw - 24px);
}

.navList {
  position: relative;
  display: inline-flex;
  flex-direction: row;
  gap: 6px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  overflow-x: auto;
  scrollbar-width: none;
  max-width: inherit;

  &::-webkit-scrollbar {
    display: none;
  }
}

.indicator {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  opacity: 0;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.15);
  box-shadow: inset 0 0 0 2px var(--primary-color);
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1),
    width 220ms cubic-bezier(0.22, 1, 0.36, 1),
    height 220ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 120ms ease;
  will-change: transform, width, height;
}

.indicatorVisible {
  opacity: 1;
}

.indicatorNoTransition {
  transition: none;
}

.navItem {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease;
  flex: 0 0 auto;

  &:hover {
    background: rgba(0, 0, 0, 0.06);
    transform: scale(1.08);
  }

  &:active {
    transform: scale(0.95);
  }
}

.navItem.active {
  &:hover {
    background: transparent;
    transform: none;
  }
}

.icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.active {
  // Active highlight is rendered by the sliding indicator.
  background: transparent;
  box-shadow: none;
}

// 暗色主题适配
:global([data-theme='dark']) {
  .navList {
    background: rgba(30, 30, 30, 0.7);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  }

  .navItem {
    &:hover {
      background: rgba(255, 255, 255, 0.1);
    }
  }

  .indicator {
    background: rgba(59, 130, 246, 0.25);
  }
}

// 小屏幕进一步收紧尺寸
@media (max-width: 1200px) {
  .navContainer {
    max-width: calc(100vw - 16px);
  }

  .navList {
    gap: 6px;
    padding: 8px 10px;
  }

  .navItem {
    width: 36px;
    height: 36px;
  }

  .icon {
    width: 22px;
    height: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .indicator {
    transition: none;
  }

  .navItem {
    transition: background-color 0.2s ease;
  }
}