/* akong AgentSwitcher · Web 样式 · 用 var(--ak-*) 接 @akong/tokens */

/* === Backdrop (半透明黑覆盖) === */
.ak-agent-switcher__backdrop {
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 0.45);
  z-index: var(--ak-z-overlay);
  animation: ak-agent-switcher-fade-in var(--ak-duration-base) var(--ak-ease-out);
  -webkit-tap-highlight-color: transparent;
}

/* === Drawer (从底部 slide-up · max-w 480 居中) === */
.ak-agent-switcher__drawer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--ak-z-modal);
  max-width: 480px;
  margin-inline: auto;
  background: var(--ak-bg-elevated);
  color: var(--ak-fg);
  border-top-left-radius: var(--ak-radius-2xl);
  border-top-right-radius: var(--ak-radius-2xl);
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: var(--ak-shadow-lg);
  font-family: var(--ak-font-sans);
  display: flex;
  flex-direction: column;
  max-height: 85vh;
  animation: ak-agent-switcher-slide-up var(--ak-duration-slow) var(--ak-ease-out);
}

/* === Grabber (顶部小横线) === */
.ak-agent-switcher__grabber {
  width: 40px;
  height: 4px;
  border-radius: var(--ak-radius-full);
  background: var(--ak-border);
  margin: var(--ak-space-3) auto var(--ak-space-2);
  flex-shrink: 0;
}

/* === Header (标题 + 关闭按钮) === */
.ak-agent-switcher__header {
  position: relative;
  text-align: center;
  padding: var(--ak-space-2) var(--ak-space-12) var(--ak-space-3);
  flex-shrink: 0;
}
.ak-agent-switcher__title {
  font-size: var(--ak-text-md);
  font-weight: var(--ak-weight-semibold);
  letter-spacing: var(--ak-tracking-tight);
  color: var(--ak-fg);
  margin: 0;
}
.ak-agent-switcher__close {
  position: absolute;
  top: 50%;
  right: var(--ak-space-3);
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  color: var(--ak-fg-subtle);
  cursor: pointer;
  border-radius: var(--ak-radius-full);
  font-size: 20px;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
  transition: opacity var(--ak-duration-fast) var(--ak-ease-out);
}
.ak-agent-switcher__close:active {
  opacity: 0.7;
}
.ak-agent-switcher__close:focus-visible {
  outline: 2px solid var(--ak-border-strong);
  outline-offset: 2px;
}

/* === List (滚动区) === */
.ak-agent-switcher__list {
  list-style: none;
  margin: 0;
  padding: var(--ak-space-1) var(--ak-space-2) var(--ak-space-2);
  overflow-y: auto;
  flex: 1 1 auto;
  -webkit-overflow-scrolling: touch;
}
.ak-agent-switcher__list:empty + .ak-agent-switcher__empty {
  display: block;
}

.ak-agent-switcher__empty {
  padding: var(--ak-space-8) var(--ak-space-4);
  text-align: center;
  color: var(--ak-fg-subtle);
  font-size: var(--ak-text-sm);
}

.ak-agent-switcher__item {
  display: flex;
  align-items: center;
  gap: var(--ak-space-3);
  width: 100%;
  min-height: 56px;
  padding: var(--ak-space-2) var(--ak-space-3);
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  border-radius: var(--ak-radius-lg);
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    background-color var(--ak-duration-fast) var(--ak-ease-out),
    opacity var(--ak-duration-fast) var(--ak-ease-out);
}
.ak-agent-switcher__item:hover {
  background: var(--ak-bg-hover);
}
.ak-agent-switcher__item:active {
  opacity: 0.7;
}
.ak-agent-switcher__item:focus-visible {
  outline: 2px solid var(--ak-border-strong);
  outline-offset: -2px;
}
.ak-agent-switcher__item--active {
  background: var(--ak-bg-subtle);
}

.ak-agent-switcher__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--ak-radius-full);
  background: var(--ak-bg-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  font-size: var(--ak-text-lg);
  color: var(--ak-fg);
}
.ak-agent-switcher__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ak-agent-switcher__meta {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ak-agent-switcher__name {
  font-size: var(--ak-text-base);
  font-weight: var(--ak-weight-semibold);
  color: var(--ak-fg);
  line-height: var(--ak-leading-snug);
  letter-spacing: var(--ak-tracking-tight);
}
.ak-agent-switcher__tagline {
  font-size: var(--ak-text-sm);
  color: var(--ak-fg-subtle);
  line-height: var(--ak-leading-snug);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ak-agent-switcher__check {
  flex-shrink: 0;
  color: var(--ak-fg);
  font-size: var(--ak-text-md);
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* === Footer (新建按钮) === */
.ak-agent-switcher__footer {
  padding: var(--ak-space-3) var(--ak-space-4) var(--ak-space-4);
  border-top: 1px solid var(--ak-border-subtle);
  flex-shrink: 0;
}
.ak-agent-switcher__create {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ak-space-2);
  width: 100%;
  min-height: 48px;
  padding: 0 var(--ak-space-4);
  background: var(--ak-bg-subtle);
  color: var(--ak-fg);
  border: 0;
  border-radius: var(--ak-radius-full);
  font-family: inherit;
  font-size: var(--ak-text-base);
  font-weight: var(--ak-weight-medium);
  letter-spacing: var(--ak-tracking-tight);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    background-color var(--ak-duration-fast) var(--ak-ease-out),
    opacity var(--ak-duration-fast) var(--ak-ease-out);
}
.ak-agent-switcher__create:hover {
  background: var(--ak-bg-hover);
}
.ak-agent-switcher__create:active {
  opacity: 0.7;
}
.ak-agent-switcher__create:focus-visible {
  outline: 2px solid var(--ak-border-strong);
  outline-offset: 2px;
}

/* === Animations === */
@keyframes ak-agent-switcher-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes ak-agent-switcher-slide-up {
  from {
    transform: translateY(100%);
    opacity: 0.6;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}