/* ============================================================
   智小政助手浮层（#assistantRoot）
   - 人物固定层：桌面 72×84，移动端 56×64（预留固定尺寸避免布局跳动）
   - 浮窗 min(380px, calc(100vw - 32px))，max-height 70vh
   - 移动端（<768px）底部面板 max-height 85vh
   - z-index 变量：默认低于全局模态框
   - prefers-reduced-motion 下禁用动效
   ============================================================ */

:root {
  --assistant-z: 860;
  --assistant-accent: #22d3ee;
  --assistant-primary: #2563eb;
}

#assistantRoot {
  position: fixed;
  inset: 0 auto auto 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--assistant-z);
  font-family: inherit;
}

#assistantRoot[data-assistant-hidden="true"] {
  display: none;
}

#assistantRoot [data-assistant-character] {
  position: absolute;
  left: calc(100vw - 96px);
  top: calc(100vh - 108px);
  width: 72px;
  height: 84px;
  pointer-events: auto;
  border: none;
  padding: 0;
  background: transparent;
  cursor: grab;
  touch-action: none;
  border-radius: 14px;
}

#assistantRoot [data-assistant-character]:focus-visible {
  outline: 3px solid var(--assistant-accent);
  outline-offset: 2px;
}

#assistantRoot [data-assistant-character][data-dragging="true"] {
  cursor: grabbing;
}

#assistantRoot [data-assistant-character] img,
#assistantRoot [data-assistant-character] svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 4px 10px rgba(29, 78, 216, 0.35));
  border-radius: 14px;
}

/* ---------- 对话面板 ---------- */

#assistantRoot [data-assistant-panel] {
  position: absolute;
  left: calc(100vw - 96px - min(380px, calc(100vw - 32px)) - 8px);
  top: auto;
  bottom: 24px;
  width: min(380px, calc(100vw - 32px));
  max-height: 70vh;
  display: none;
  flex-direction: column;
  pointer-events: auto;
  background: #ffffff;
  color: #0f172a;
  border: 1px solid rgba(37, 99, 235, 0.25);
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.18);
  overflow: hidden;
}

#assistantRoot[data-panel-open="true"] [data-assistant-panel] {
  display: flex;
}

#assistantRoot [data-assistant-panel] header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 14px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-weight: 600;
}

#assistantRoot [data-assistant-panel-close] {
  border: none;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  cursor: pointer;
}

#assistantRoot [data-assistant-messages] {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: thin;
}

#assistantRoot [data-assistant-message="user"],
#assistantRoot [data-assistant-message="assistant"] {
  max-width: 88%;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

#assistantRoot [data-assistant-message="user"] {
  align-self: flex-end;
  background: var(--assistant-primary);
  color: #ffffff;
}

#assistantRoot [data-assistant-message="assistant"] {
  align-self: flex-start;
  background: #eff6ff;
  color: #0f172a;
}

#assistantRoot [data-assistant-meta] {
  margin-top: 4px;
  font-size: 11px;
  opacity: 0.75;
}

#assistantRoot [data-assistant-evidence-toggle] {
  margin-top: 6px;
  border: none;
  background: transparent;
  color: var(--assistant-primary);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
  text-align: left;
}

#assistantRoot [data-assistant-evidence] {
  margin-top: 6px;
  padding: 8px;
  background: rgba(34, 211, 238, 0.08);
  border-radius: 8px;
  font-size: 12px;
  display: none;
}

#assistantRoot [data-assistant-message].evidence-open [data-assistant-evidence] {
  display: block;
}

#assistantRoot [data-assistant-actions] {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}

#assistantRoot [data-assistant-action-btn] {
  border: 1px solid rgba(37, 99, 235, 0.4);
  background: #ffffff;
  color: var(--assistant-primary);
  padding: 6px 10px;
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  font-size: 13px;
}

#assistantRoot [data-assistant-confirm-card] {
  border: 1px solid rgba(37, 99, 235, 0.45);
  border-radius: 12px;
  padding: 10px;
  background: #f8fbff;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#assistantRoot [data-assistant-confirm-card] .row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

#assistantRoot [data-assistant-confirm-card] button {
  border: none;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
}

#assistantRoot [data-assistant-confirm-accept] {
  background: var(--assistant-primary);
  color: #ffffff;
}

#assistantRoot [data-assistant-confirm-cancel] {
  background: #e2e8f0;
  color: #0f172a;
}

#assistantRoot [data-assistant-notification] {
  position: absolute;
  left: auto;
  right: 84px;
  bottom: 96px;
  max-width: 260px;
  padding: 8px 12px;
  background: #0f172a;
  color: #ffffff;
  font-size: 13px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.3);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 160ms ease, transform 160ms ease;
}

#assistantRoot [data-assistant-notification].visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 767px) {
  #assistantRoot [data-assistant-character] {
    width: 56px;
    height: 64px;
    left: calc(100vw - 72px);
    top: calc(100vh - 84px);
  }

  #assistantRoot [data-assistant-panel],
  #assistantRoot[data-panel-open="true"] [data-assistant-panel] {
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    width: 100vw;
    max-height: 85vh;
    border-radius: 16px 16px 0 0;
  }

  #assistantRoot [data-assistant-notification] {
    right: 64px;
    bottom: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #assistantRoot *,
  #assistantRoot *::before,
  #assistantRoot *::after {
    animation: none !important;
    transition: none !important;
  }
}