/* ============================================================
   待办事项悬浮窗 Demo 样式
   配色暂用经典主题暖色系，正式接入时替换为语义 token
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --surface-base: #faf9f5;
  --surface-float: #ffffff;
  --surface-wash: #f5f0e8;
  --border-subtle: #ece5d8;
  --border-strong: #e2d9c8;
  --text-primary: #26241f;
  --text-secondary: #6f6a5e;
  --text-tertiary: #a9a294;
  --accent: #cc785c;
  --accent-hover: #c06a4e;
  --hover-wash: rgba(38, 36, 31, 0.04);
  --shadow-float: 0 1px 2px rgba(38, 36, 31, 0.05), 0 8px 24px rgba(38, 36, 31, 0.10);
  --row-h: 36px;
  --window-max-w: 300px;
  --ease-out: cubic-bezier(0.22, 0.9, 0.28, 1);
  --ease-strike: cubic-bezier(0.55, 0.06, 0.35, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  background: var(--surface-base);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ---------------- 模拟对话区 ---------------- */

.mock-chat {
  max-width: 640px;
  margin: 0 auto;
  padding: 64px 24px 220px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mock-bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.6;
}

.mock-bubble--user { align-self: flex-end; background: #efe9de; }
.mock-bubble--ai   { align-self: flex-start; background: #ffffff; border: 1px solid var(--border-subtle); }

/* ---------------- 悬浮窗口栈 ---------------- */

.float-stack {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: flex-end;   /* 多个窗口右对齐，上下排布 */
  gap: 12px;
  /* 整体超出屏幕高度时可滚动，滚动条隐藏 */
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  /* padding + 负 margin：扩大滚动盒以容纳窗口阴影，避免被 overflow 裁剪 */
  padding: 24px;
  margin: -24px;
}

.float-stack::-webkit-scrollbar { display: none; width: 0; height: 0; }

/* 窗口：圆角矩形 + 固定宽度（最大宽度的 90%） + 不透明背景 + 克制阴影 */
.float-window {
  flex: none;                              /* 禁止被栈 flex 压缩，保持固定高度 */
  width: calc(var(--window-max-w) * 0.9);   /* 300 * 0.9 = 270px */
  background: var(--surface-float);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  box-shadow: var(--shadow-float);
  overflow: hidden;
}

/* 窗口自身出现 / 消失（高度变化由行展开动画带动，这里只做淡入） */
.float-window.window-enter { animation: window-in 0.3s ease-out; }
@keyframes window-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.float-window.window-leave { animation: window-out 0.22s ease-in forwards; }
@keyframes window-out {
  to { opacity: 0; transform: translateY(-4px) scale(0.98); }
}

/* 窗口标题栏 */
.float-window__header {
  height: 38px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.float-window__icon { width: 15px; height: 15px; color: var(--accent); flex: none; }

.float-window__title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.todo-counter {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

/* ---------------- 待办列表 ---------------- */

/* 窗口高度固定为 5 行，不足留空、超出内部滚动；滚动条完全隐藏。
   无上下 padding：首行 hover 紧贴标题栏分隔线，末行紧贴窗口底边 */
.todo-list {
  list-style: none;
  padding: 0;
  height: calc(var(--row-h) * 5);
  overflow-y: auto;
  scrollbar-width: none;       /* Firefox */
  -ms-overflow-style: none;    /* 旧 Edge */
}

.todo-list::-webkit-scrollbar { display: none; width: 0; height: 0; }

/* 每一行直接铺在窗口上：无背景、无边框、无嵌套卡片 */
/* 待办行不可点击，无 hover 效果 */
.todo-item {
  height: var(--row-h);
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 12px;
  overflow: hidden;             /* 配合移出动画的高度收拢 */
}

/* 状态点 */
.todo-dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1.5px solid var(--text-tertiary);
  background: transparent;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.todo-item.is-done .todo-dot { background: var(--accent); border-color: var(--accent); }

/* 任务文字：固定一行，超长省略 */
.todo-text {
  position: relative;
  flex: 1;
  min-width: 0;
  font-size: 13px;
  line-height: 1;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.22s ease 0.12s;   /* 变灰略滞后于划线 */
}

/* 删除线（默认收起） */
.todo-text::after {
  content: '';
  position: absolute;
  left: -1px;
  right: -1px;
  top: 50%;
  height: 1.5px;
  margin-top: -0.75px;
  background: var(--text-tertiary);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

/* 完成态（静态，用于整表渲染时已完成行） */
.todo-item.is-done .todo-text { color: var(--text-tertiary); }
.todo-item.is-done .todo-text::after { transform: scaleX(1); }

/* 完成动作瞬间：横线从左往右划过 + 状态点弹跳 */
.todo-item.just-done .todo-text::after {
  animation: strike-in 0.28s var(--ease-strike) forwards;
}
@keyframes strike-in {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.todo-item.just-done .todo-dot { animation: dot-pop 0.32s var(--ease-out); }
@keyframes dot-pop {
  0%   { transform: scale(1); }
  45%  { transform: scale(1.6); }
  100% { transform: scale(1); }
}

/* 进入动画：从左向右位移 + 淡入（stagger 由 JS 写 animation-delay） */
.todo-item.is-entering {
  opacity: 0;
  animation: todo-in 0.34s var(--ease-out) forwards;
}
@keyframes todo-in {
  from { opacity: 0; transform: translateX(-14px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* 移出动画：从右向左位移 + 淡出，随后高度收拢让下方行平滑上移 */
.todo-item.is-leaving {
  animation: todo-out 0.26s ease-in forwards;
}
@keyframes todo-out {
  0%   { opacity: 1; transform: translateX(0);     height: var(--row-h); }
  55%  { opacity: 0; transform: translateX(-14px); height: var(--row-h); }
  100% { opacity: 0; transform: translateX(-14px); height: 0; }
}

/* ---------------- demo 控制台 ---------------- */

.demo-panel {
  position: fixed;
  left: 20px;
  bottom: 20px;
  z-index: 100;
}

.demo-panel__hint {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

.demo-panel__buttons {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.demo-btn {
  height: 34px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface-float);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.demo-btn:hover { background: var(--surface-wash); }

.demo-btn--primary { background: var(--accent); border-color: var(--accent); color: #ffffff; }
.demo-btn--primary:hover { background: var(--accent-hover); }

.demo-btn--ghost { border-style: dashed; color: var(--text-tertiary); }