/**
 * 聊天窗口面板 - 历史记录窗口样式
 * 包含：弹窗容器、日期选择器、筛选按钮、消息列表
 * 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）
 */

/* ========== 历史记录弹窗（独立样式，仅本面板） ========== */
.chat-window-panel .chat-window-history-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
}
.chat-window-panel .chat-window-history-modal[hidden] {
    display: none;
}
.chat-window-panel .chat-window-history-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.chat-window-panel .chat-window-history-dialog {
    position: relative;
    width: 900px;
    height: 85vh;
    max-height: 85vh;
    background: var(--cw-bg-panel);
    border: 1px solid var(--cw-border);
    border-radius: 10px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}
.chat-window-panel .chat-window-history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-shrink: 0;
}
.chat-window-panel .chat-window-history-title {
    font-size: 16px;
    font-weight: bold;
    color: var(--cw-text-title);
    margin: 0;
    flex: 1;
}
.chat-window-panel .chat-window-history-close-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--cw-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
}
.chat-window-panel .chat-window-history-close-btn:hover {
    background: var(--cw-hover);
    color: var(--cw-text);
}
.chat-window-panel .chat-window-history-close-btn svg {
    width: 20px;
    height: 20px;
}

/* ========== 控制区域 ========== */
.chat-window-panel .chat-window-history-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    gap: 16px;
}
.chat-window-panel .chat-window-history-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--cw-border-subtle);
}
.chat-window-panel .chat-window-history-date-group,
.chat-window-panel .chat-window-history-filter-group,
.chat-window-panel .chat-window-history-search-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.chat-window-panel .chat-window-history-label {
    font-size: 13px;
    color: var(--cw-text);
    white-space: nowrap;
    font-weight: normal;
}
.chat-window-panel .chat-window-history-date-input {
    padding: 6px 10px;
    border: 1px solid var(--cw-border);
    border-radius: 6px;
    background: var(--cw-bg-deep);
    color: var(--cw-text);
    font-size: 13px;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    cursor: pointer;
    transition: border-color 0.15s;
}
.chat-window-panel .chat-window-history-date-input:hover {
    border-color: var(--cw-border-hover);
}
.chat-window-panel .chat-window-history-date-input:focus {
    outline: none;
    border-color: var(--cw-primary);
}
.chat-window-panel .chat-window-history-filter-btn {
    padding: 6px 12px;
    border: 1px solid var(--cw-border);
    border-radius: 6px;
    background: var(--cw-bg-deep);
    color: var(--cw-text-muted);
    font-size: 12px;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.chat-window-panel .chat-window-history-filter-btn:hover {
    background: var(--cw-hover);
    color: var(--cw-text);
    border-color: var(--cw-border-hover);
}
.chat-window-panel .chat-window-history-filter-btn.active {
    background: var(--cw-primary);
    color: #fff;
    border-color: var(--cw-primary);
}
.chat-window-panel .chat-window-history-search-input {
    flex: 1;
    min-width: 200px;
    padding: 6px 10px;
    border: 1px solid var(--cw-border);
    border-radius: 6px;
    background: var(--cw-bg-deep);
    color: var(--cw-text);
    font-size: 13px;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    transition: border-color 0.15s;
}
.chat-window-panel .chat-window-history-search-input:focus {
    outline: none;
    border-color: var(--cw-primary);
}
.chat-window-panel .chat-window-history-search-input::placeholder {
    color: var(--cw-text-muted);
}

/* ========== 按钮样式 ========== */
.chat-window-panel .chat-window-history-btn {
    padding: 6px 14px;
    border: 1px solid var(--cw-border);
    border-radius: 6px;
    background: var(--cw-bg-deep);
    color: var(--cw-text);
    font-size: 13px;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", Arial, sans-serif;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.chat-window-panel .chat-window-history-btn:hover {
    background: var(--cw-hover);
    border-color: var(--cw-border-hover);
}
.chat-window-panel .chat-window-history-btn-primary {
    background: var(--cw-primary);
    color: #fff;
    border-color: var(--cw-primary);
}
.chat-window-panel .chat-window-history-btn-primary:hover {
    background: var(--cw-primary-hover, var(--cw-primary));
    opacity: 0.9;
}
.chat-window-panel .chat-window-history-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== 消息列表区域 ========== */
.chat-window-panel .chat-window-history-messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 12px;
    background: var(--cw-bg-deep);
    border: 1px solid var(--cw-border-subtle);
    border-radius: 6px;
}
.chat-window-panel .chat-window-history-messages-empty {
    text-align: center;
    color: var(--cw-text-muted);
    font-size: 13px;
    padding: 40px 20px;
}
.chat-window-panel .chat-window-history-messages-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
/* 复用消息气泡样式 */
.chat-window-panel .chat-window-history-messages .chat-window-message {
    /* 使用现有的消息样式，无需重复定义 */
}
/* 日期分隔线样式（复用） */
.chat-window-panel .chat-window-history-messages .chat-window-date-divider {
    /* 使用现有的日期分隔线样式 */
}

/* ========== 底部加载更多 ========== */
.chat-window-panel .chat-window-history-footer {
    display: flex;
    justify-content: center;
    padding-top: 12px;
    flex-shrink: 0;
}
.chat-window-panel .chat-window-history-load-more-btn {
    min-width: 120px;
}

/* ========== 加载状态 ========== */
.chat-window-panel .chat-window-history-loading {
    text-align: center;
    color: var(--cw-text-muted);
    font-size: 13px;
    padding: 20px;
}