/* 布局：左聊天栏 / 中白板（顶部管理员状态 + 底部头像）/ 右留空 */

:root {
  --color-bg: #f2f3f5;
  --color-surface: #ffffff;
  --color-primary: #5865f2;
  --color-primary-hover: #4752c4;
  --color-bubble-mine: #5865f2;
  --color-bubble-other: #ffffff;
  --color-text: #1e1f22;
  --color-text-muted: #80848e;
  --color-danger: #e74c3c;
  --color-border: #e3e5e8;
  --color-online: #23a55a;
  --color-offline: #9ba1a8;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-base: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
}

.app {
  display: grid;
  grid-template-columns: 320px 1fr 200px;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "chat admin   right"
    "chat board   right"
    "chat avatars right";
  height: 100vh;
}

.chat-panel { grid-area: chat; }
.admin-bar { grid-area: admin; margin: 16px 16px 16px; }
.whiteboard { grid-area: board; margin: 0 16px; }
.avatar-bar { grid-area: avatars; margin: 16px 16px 16px; }
.right-panel { grid-area: right; }

/* ===== 左：聊天栏 ===== */
.chat-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
}

.chat__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.chat__header-title { font-size: 16px; font-weight: 600; }
.chat__header-basket {
  display: none;
  margin-left: 8px;
  font-size: 16px;
  line-height: 1;
  vertical-align: middle;
}

.chat__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-bg);
}

/* 消息 */
.msg { display: flex; flex-direction: row; align-items: flex-start; gap: var(--space-2); max-width: 85%; }
.msg--mine { align-self: flex-end; flex-direction: row-reverse; }
.msg--system { align-self: center; max-width: 90%; }
.msg__avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex: none;
  overflow: hidden;
}
.msg__body { display: flex; flex-direction: column; min-width: 0; }
.msg--mine .msg__body { align-items: flex-end; }
.msg__meta { font-size: 11px; color: var(--color-text-muted); margin-bottom: 2px; }
.msg__badge {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 6px;
  border-radius: 999px;
  background: #f6c445;
  color: #7a4a00;
  font-size: 11px;
  font-weight: 600;
}
.msg__bubble {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-bubble-other);
  border: 1px solid var(--color-border);
  word-break: break-word;
  white-space: pre-wrap;
  font-size: 14px;
  line-height: 1.45;
}
.msg--mine .msg__bubble { background: var(--color-bubble-mine); color: #fff; border: none; }
.msg__bubble--system { background: #ebedef; color: var(--color-text-muted); font-style: italic; }
.msg__bubble--sending { opacity: 0.6; }
.msg__bubble--failed { border-color: var(--color-danger); }
.msg__retry {
  display: block;
  margin-top: var(--space-1);
  border: none;
  background: transparent;
  color: var(--color-danger);
  cursor: pointer;
  font-size: 12px;
  padding: 0;
}

/* 输入区 */
.chat__input {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
}
.input__field {
  flex: 1;
  resize: none;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 14px;
  min-height: 40px;
  max-height: 160px;
}
.input__field:focus { outline: none; border-color: var(--color-primary); }
.input__send {
  padding: 0 var(--space-4);
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
}
.input__send:hover:not(:disabled) { background: var(--color-primary-hover); }
.input__send:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== 顶部：管理员状态 ===== */
.admin-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}
.admin-bar__box {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.admin-bar__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
}
.admin-bar__info { display: flex; flex-direction: column; gap: 2px; }
.admin-bar__name { font-size: 15px; font-weight: 600; }
.admin-bar__status { font-size: 12px; color: var(--color-offline); display: flex; align-items: center; gap: 5px; }
.admin-bar__status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-offline);
}
.admin-bar__status--online { color: var(--color-online); }
.admin-bar__status--online::before { background: var(--color-online); }
.admin-bar__claim {
  border: 1px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.admin-bar__claim:hover { background: var(--color-primary); color: #fff; }
.admin-bar__logout {
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}
.admin-bar__logout:hover { color: var(--color-danger); border-color: var(--color-danger); }

/* 白板 */
.whiteboard {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  min-height: 0;
  overflow: hidden;
}
.whiteboard__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}
.whiteboard__gate {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.55);
}
.whiteboard__requests {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 260px;
}
.whiteboard__request {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}
.whiteboard__request-name { font-size: 13px; }
.whiteboard__toolbar {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 3;
  display: flex;
  gap: 8px;
}
.whiteboard__btn {
  border: 1px solid var(--color-primary);
  background: #fff;
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.whiteboard__btn--primary { background: var(--color-primary); color: #fff; }
.whiteboard__btn:hover { opacity: 0.9; }
.whiteboard__hint { color: var(--color-text-muted); font-size: 13px; }

/* 底部：人物头像 */
.avatar-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  min-height: 56px;
  overflow-x: auto;
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  flex: none;
}
.avatar-bar__empty { font-size: 13px; color: var(--color-text-muted); }

/* ===== 右：野餐篮 ===== */
.right-panel {
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.picnic-basket {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
}
.picnic-basket__icon { font-size: 56px; line-height: 1; }
.picnic-basket__label { font-size: 13px; }

/* 移动端底部 tab（仅手机显示） */
.mobile-tabs { display: none; }

/* 响应式 */
@media (max-width: 900px) {
  .app {
    grid-template-columns: 300px 1fr;
    grid-template-areas:
      "chat admin"
      "chat board"
      "chat avatars";
  }
  .right-panel { display: none; }
  .chat__header-basket { display: inline; }
}

/* 手机竖屏：上下堆叠（管理员 → 野餐篮 → 画板 → 聊天 → 用户栏） */
@media (max-width: 640px) {
  .app {
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }
  .mobile-tabs { display: none; }

  .admin-bar { order: 1; margin: 12px; }
  .right-panel {
    order: 2;
    display: flex;
    margin: 0 12px 12px;
    padding: 20px 12px;
    border-left: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
  }
  .whiteboard { order: 3; height: 55vh; margin: 0 12px; }
  .chat-panel {
    order: 4;
    height: 60vh;
    margin: 12px;
    border-right: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
  }
  .avatar-bar { order: 5; margin: 0 12px 12px; }
}

/* ===== 编辑资料按钮 ===== */
.chat__header-edit {
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}
.chat__header-edit:hover { color: var(--color-primary); border-color: var(--color-primary); }

/* ===== emoji 头像 ===== */
.avatar--emoji {
  background: #eef0f4 !important;
  font-size: 22px;
  line-height: 1;
}

/* ===== 编辑资料弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.45);
  padding: 16px;
}
.modal-box {
  width: 100%;
  max-width: 360px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.modal-box__title { font-size: 17px; font-weight: 600; margin-bottom: var(--space-4); }
.modal-box__label { font-size: 13px; color: var(--color-text-muted); margin-bottom: 8px; }
.avatar-picker {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  margin-bottom: var(--space-4);
}
.avatar-picker__item {
  aspect-ratio: 1;
  border: 2px solid transparent;
  border-radius: 10px;
  background: #f2f3f5;
  font-size: 20px;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.avatar-picker__item.is-active { border-color: var(--color-primary); background: #eef0ff; }
.modal-box__input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 14px;
  margin-bottom: var(--space-4);
}
.modal-box__input:focus { outline: none; border-color: var(--color-primary); }
.modal-box__actions { display: flex; justify-content: flex-end; gap: var(--space-2); }
.modal-box__btn {
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
}
.modal-box__btn--primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.modal-box__btn:hover { opacity: 0.9; }

/* ===== 图片头像 ===== */
.avatar--img { overflow: hidden; }
.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 编辑资料：头像预览 ===== */
.profile-avatar-row { display: flex; align-items: center; gap: 16px; margin-bottom: var(--space-4); }
.profile-avatar-preview {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #f2f3f5;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex: none;
  overflow: hidden;
}
.profile-avatar-controls { display: flex; flex-direction: column; gap: 8px; }

/* ===== 手机横屏：聊天 + 白板并排，聊天栏窄、白板大 ===== */
@media (orientation: landscape) and (max-height: 500px) {
  .app {
    grid-template-columns: 240px 1fr;
    grid-template-areas:
      "chat admin"
      "chat board"
      "chat avatars";
  }
  .right-panel { display: none; }
  .mobile-tabs { display: none; }
  .admin-bar { margin: 12px 12px 12px; }
  .whiteboard { margin: 0 12px; }
  .avatar-bar { margin: 12px 12px 12px; }
}

/* ===== 页面缩放控件 ===== */
.zoom-controls {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 95;
  display: flex;
  align-items: center;
  gap: 4px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.14);
}
.zoom-controls__btn {
  min-width: 30px;
  height: 30px;
  border: none;
  background: transparent;
  color: var(--color-text);
  border-radius: 50%;
  font: inherit;
  font-size: 16px;
  cursor: pointer;
}
.zoom-controls__btn:hover { background: #eef0f4; }
.zoom-controls__reset {
  min-width: auto;
  border-radius: 999px;
  padding: 0 10px;
  font-size: 12px;
  color: var(--color-text-muted);
}
.zoom-controls__val {
  min-width: 44px;
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

/* 手机：缩小后切到完整三栏布局（看到全部） */
@media (max-width: 640px) {
  .zoom-controls { bottom: 12px; }
  .app.is-zoomed-out {
    display: grid;
    grid-template-columns: 320px 760px 200px;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
      "chat admin   right"
      "chat board   right"
      "chat avatars right";
    width: 1280px;
    height: 100vh;
    min-height: 0;
  }
  .app.is-zoomed-out .admin-bar { order: 0; margin: 16px 16px 16px; }
  .app.is-zoomed-out .right-panel {
    order: 0;
    display: flex;
    margin: 0;
    padding: 0;
    border: none;
    border-left: 1px solid var(--color-border);
    border-radius: 0;
  }
  .app.is-zoomed-out .whiteboard { order: 0; height: auto; margin: 0 16px; }
  .app.is-zoomed-out .chat-panel {
    order: 0;
    height: auto;
    margin: 0;
    border: none;
    border-right: 1px solid var(--color-border);
    border-radius: 0;
    overflow: visible;
  }
  .app.is-zoomed-out .avatar-bar { order: 0; margin: 16px 16px 16px; }
  .app.is-zoomed-out .mobile-tabs { display: none; }
}

/* ===== 野餐篮可点击 ===== */
.picnic-basket { cursor: pointer; }
.chat__header-basket { cursor: pointer; }

/* ===== 野餐篮弹窗 ===== */
.basket-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: var(--space-4);
  max-height: 50vh;
  overflow-y: auto;
}
.basket-empty {
  color: var(--color-text-muted);
  font-size: 13px;
  text-align: center;
  padding: 16px 0;
}
.basket-item {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 8px 12px;
}
.basket-item__icon { font-size: 22px; }
.basket-item__name { flex: 1; font-size: 14px; min-width: 0; }
.basket-item__count { font-size: 13px; color: var(--color-text-muted); }
.basket-add { width: 100%; margin-bottom: 8px; }

/* 物品图标（emoji 或本地图片 dataURL） */
.item-icon-img { display: block; width: 22px; height: 22px; object-fit: cover; border-radius: 4px; }

/* 物品表单：本地选图预览 */
.item-pic-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.item-pic-preview {
  width: 44px; height: 44px; border: 1px solid var(--color-border);
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; overflow: hidden; flex: none;
}
.item-pic-preview .item-icon-img { width: 44px; height: 44px; border-radius: 7px; }
.rp-desc { display: flex; align-items: center; gap: 6px; }
.rp-desc__icon { font-size: 16px; line-height: 1; }
.rp-desc__icon .item-icon-img { width: 16px; height: 16px; }

/* ===== 加物品：emoji 选择器 ===== */
.emoji-picker {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
  margin-bottom: var(--space-4);
  max-height: 160px;
  overflow-y: auto;
}
.emoji-picker__item {
  aspect-ratio: 1;
  border: 2px solid transparent;
  border-radius: 8px;
  background: #f2f3f5;
  font-size: 18px;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.emoji-picker__item.is-active { border-color: var(--color-primary); background: #eef0ff; }

/* ===== 红包卡片（微信风） ===== */
.rp-card {
  background: #fa5151;
  color: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  min-width: 200px;
  max-width: 260px;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.rp-card__top { display: flex; align-items: center; gap: 8px; }
.rp-card__icon { font-size: 28px; line-height: 1; }
.rp-card__title { font-weight: 600; font-size: 15px; }
.rp-card__body { opacity: 0.95; display: flex; align-items: center; gap: 6px; }
.rp-card__emoji { font-size: 16px; line-height: 1; }
.rp-card__emoji .item-icon-img { width: 18px; height: 18px; }
.rp-card__claims { font-size: 12px; opacity: 0.9; word-break: break-all; }
.rp-card__status { font-size: 12px; opacity: 0.9; }
.rp-card__claim {
  border: none;
  background: #fff;
  color: #fa5151;
  border-radius: 999px;
  padding: 6px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  align-self: center;
}
.rp-card__claim:hover { opacity: 0.9; }