/**
 * 聊天窗口面板 - 左侧边栏样式
 * 包含：搜索区域、用户列表、好友申请项
 * 独立样式（仅本面板使用，不与其他面板通用）
 * 字体：Microsoft YaHei（符合项目字体规范）
 */

/* ========== 左侧边栏 ========== */
.chat-window-panel .chat-window-sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--cw-bg-panel);
    border-right: 1px solid var(--cw-border);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.chat-window-panel .chat-window-search {
    padding: 12px;
    border-bottom: 1px solid var(--cw-border);
    flex-shrink: 0;
    position: relative;
}
.chat-window-panel .chat-window-search-inner {
    display: flex;
    align-items: center;
    background: var(--cw-bg-deep);
    border: 1px solid var(--cw-border);
    border-radius: 6px;
    padding: 8px 12px;
}
.chat-window-panel .chat-window-search-inner:focus-within {
    border-color: var(--cw-accent);
    outline: none;
}
.chat-window-panel .chat-window-search-icon {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    background: var(--cw-icon-bg);
    border-radius: 50%;
    flex-shrink: 0;
}
.chat-window-panel .chat-window-search-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--cw-text);
    font-family: inherit;
    font-size: 13px;
}
.chat-window-panel .chat-window-search-input::placeholder {
    color: var(--cw-text-muted);
}
.chat-window-panel .chat-window-search-input:focus {
    outline: none;
}
.chat-window-panel .chat-window-search-add.chat-window-add-btn {
    width: 28px;
    height: 28px;
    margin-left: 8px;
    padding: 0;
    background: var(--cw-icon-bg);
    border: none;
    border-radius: 6px;
    flex-shrink: 0;
    cursor: pointer;
    color: var(--cw-text);
    display: flex;
    align-items: center;
    justify-content: center;
}
.chat-window-panel .chat-window-add-btn:hover {
    background: var(--cw-hover);
}
.chat-window-panel .chat-window-add-menu {
    position: absolute;
    top: 100%;
    right: 12px;
    margin-top: 4px;
    min-width: 140px;
    background: var(--cw-bg-panel);
    border: 1px solid var(--cw-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    padding: 6px 0;
    z-index: 100;
}
.chat-window-panel .chat-window-add-menu-item {
    display: block;
    width: 100%;
    padding: 10px 14px;
    border: none;
    background: transparent;
    color: var(--cw-text);
    font-family: inherit;
    font-size: 13px;
    text-align: left;
    cursor: pointer;
}
.chat-window-panel .chat-window-add-menu-item:hover:not(:disabled) {
    background: var(--cw-hover);
}
.chat-window-panel .chat-window-add-menu-item-placeholder {
    color: var(--cw-text-muted);
    cursor: not-allowed;
}

.chat-window-panel .chat-window-user-list {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}
.chat-window-panel .chat-window-user-item {
    display: flex;
    align-items: center;
    padding: 12px;
    border-bottom: 1px solid var(--cw-border-subtle);
    cursor: pointer;
    transition: background 0.15s;
}
.chat-window-panel .chat-window-user-item:hover {
    background: var(--cw-hover);
}
.chat-window-panel .chat-window-user-item.is-active {
    background: var(--cw-active);
}
.chat-window-panel .chat-window-user-item.is-active:hover {
    background: var(--cw-active);
}
.chat-window-panel .chat-window-user-avatar {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 6px;
    background: var(--cw-icon-bg);
    flex-shrink: 0;
    margin-right: 12px;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
}
.chat-window-panel .chat-window-unread-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: #e74c3c;
    color: #fff;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    font-size: 11px;
    font-weight: bold;
    line-height: 18px;
    text-align: center;
    box-sizing: border-box;
}
.chat-window-panel .chat-window-user-avatar .user-avatar,
.chat-window-panel .chat-window-user-avatar .chat-window-add-friend-result-avatar {
    width: 100%;
    height: 100%;
    min-width: 0;
    min-height: 0;
}
.chat-window-panel .chat-window-user-avatar .chat-window-add-friend-result-avatar {
    overflow: hidden;
    border-radius: 6px;
}
.chat-window-panel .chat-window-user-avatar .user-avatar-color,
.chat-window-panel .chat-window-user-avatar .user-avatar-fallback,
.chat-window-panel .chat-window-user-avatar .user-avatar:not(.user-avatar-img) {
    border-radius: 6px;
}
.chat-window-panel .chat-window-user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.chat-window-panel .chat-window-user-avatar .user-avatar-img,
.chat-window-panel .chat-window-user-avatar img.user-avatar-img {
    border-radius: 6px;
}
.chat-window-panel .chat-window-user-body {
    flex: 1;
    min-width: 0;
}
.chat-window-panel .chat-window-user-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}
.chat-window-panel .chat-window-user-name {
    font-size: 14px;
    font-weight: normal;
    color: var(--cw-text-title);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.chat-window-panel .chat-window-user-time {
    font-size: 11px;
    color: var(--cw-text-muted);
    flex-shrink: 0;
    margin-left: 8px;
}
.chat-window-panel .chat-window-user-msg {
    font-size: 12px;
    color: var(--cw-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

/* 左侧列表：好友申请项、会话项 */
.chat-window-panel .chat-window-user-item[data-type="friend_request"] .chat-window-user-msg {
    font-style: italic;
    color: var(--cw-accent);
}
.chat-window-panel .chat-window-user-item[data-type="friend_request"] .chat-window-friend-request-actions {
    margin-top: 8px;
}
.chat-window-panel .chat-window-accept-btn {
    padding: 6px 14px;
    background: var(--cw-accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
}
.chat-window-panel .chat-window-friend-request-detail {
    padding: 16px;
    background: var(--cw-bg-deep);
    border-radius: 8px;
    margin: 12px 0;
}
.chat-window-panel .chat-window-friend-request-detail-remark {
    margin-top: 8px;
    font-size: 13px;
    color: var(--cw-text-muted);
}

/* ========== 群聊头像（宫格布局） ========== */
.chat-window-panel .chat-window-group-avatar {
    width: 100%;
    height: 100%;
    display: grid;
    gap: 1px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--cw-icon-bg);
    position: relative;
}
.chat-window-panel .chat-window-group-avatar-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.chat-window-panel .chat-window-group-avatar-default {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
}
.chat-window-panel .chat-window-group-avatar-item {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--cw-icon-bg);
    position: relative;
}
.chat-window-panel .chat-window-group-avatar-item-color {
    color: #fff;
    font-size: 10px;
    font-weight: 500;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
}
.chat-window-panel .chat-window-group-avatar-item-image {
    background: transparent;
}
.chat-window-panel .chat-window-group-avatar-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.chat-window-panel .chat-window-group-avatar-item-default {
    color: var(--cw-text-muted);
    font-size: 10px;
    font-weight: 500;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    background: var(--cw-bg-deep);
}
.chat-window-panel .chat-window-group-avatar-more {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(33.333% - 2px);
    height: calc(33.333% - 2px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 11px;
    font-weight: 500;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    border-radius: 4px;
    pointer-events: none;
    z-index: 10;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}