/* 我的訊息頁面 */
.messages-page {
    height: calc(100dvh - 80px);
    min-height: 0;
    padding: 24px 24px 20px;
    background: transparent;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.messages-container {
    display: flex;
    flex: 1;
    flex-direction: column;
    width: 100%;
    max-width: 1100px;
    min-height: 0;
    margin: 0 auto;
}

/* 頁面標題 */
.messages-heading {
    flex-shrink: 0;
    margin-bottom: 20px;
}
.messages-heading h1 {
    margin: 0 0 10px;
    color: var(--text-dark);
    font-size: 30px;
    font-weight: 700;
}
.messages-heading p {
    margin: 0;
    color: var(--text-gray);
    font-size: 15px;
}

/* 聊天主要版型 */
.messages-layout {
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    flex: 1;
    height: auto;
    min-height: 0;
    overflow: hidden;
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 4px 18px rgba(80, 50, 30, 0.06);
}

/* 左側對話列表 */
.conversations-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    border-right: 1px solid var(--border);
}
.conversations-header {
    padding: 22px 24px;
    border-bottom: 1px solid var(--border);
}
.conversations-header h2 {
    margin: 0;
    color: var(--text-dark);
    font-size: 18px;
}
.conversations-list {
    flex: 1;
    overflow-y: auto;
    text-align: center;
    color: var(--text-gray);
}
.messages-placeholder {
    padding: 24px;
    color: var(--text-gray);
    font-size: 14px;
    text-align: center;
}

/* 左側對話卡片 */
.conversation-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;

    width: 100%;
    padding: 20px 24px;

    border: none;
    border-bottom: 1px solid var(--border);
    background: var(--white);

    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s;
}
/* 滑鼠移入 */
.conversation-item:hover {
    background-color: #fff3e9;
}
/* 選取中的對話，後續由 JavaScript 控制 */
.conversation-item.active {
    background-color: #fff0e5;
    border-left: 3px solid var(--primary);
}
/* 聊天對象名稱 */
.conversation-name {
    max-width: 100%;
    color: var(--text-dark);
    font-size: 16px;
    font-weight: 700;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
/* 最後一則訊息預覽 */
.conversation-preview {
    width: 100%;
    margin: 0;

    color: var(--text-gray);
    font-size: 14px;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
/* 最後訊息與傳送時間排列 */
.conversation-message-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    min-width: 0;
}
/* 訊息傳送時間 */
.conversation-time {
    flex-shrink: 0;
    color: var(--text-gray);
    font-size: 12px;
    white-space: nowrap;
}
/* 最後一則訊息 */
.conversation-message-row .conversation-preview {
    flex: 1;
    min-width: 0;
}
/* 對話未讀數量 */
.conversation-unread-badge {
    position: absolute;
    top: 18px;
    right: 18px;

    display: flex;
    align-items: center;
    justify-content: center;

    min-width: 20px;
    height: 20px;
    padding: 0 5px;

    border-radius: 999px;
    background-color: #e53935;
    color: var(--white);

    font-size: 11px;
    font-weight: 700;
    line-height: 1;
}
/* 有未讀訊息時，名稱保留右側空間 */
.conversation-item:has(.conversation-unread-badge) .conversation-name {
    max-width: calc(100% - 35px);
}

/* 右側聊天區域 */
.chat-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}
.chat-empty-state {
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
}
.chat-empty-state > svg {
    width: 52px;
    height: 52px;
    color: var(--primary);
    margin-bottom: 18px;
}
.chat-empty-state h2 {
    margin: 0 0 10px;
    color: var(--text-dark);
    font-size: 21px;
}
.chat-empty-state p {
    margin: 0;
    color: var(--text-gray);
    font-size: 14px;
}

/* 聊天內容 */
.chat-content {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-height: 0;
}
.chat-content[hidden],
.chat-empty-state[hidden] {
    display: none !important;
}
.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    padding: 22px 24px;
    border-bottom: 1px solid var(--border);
}
/* 手機版返回對話列表 */
.chat-back-button {
    display: none;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 4px;
    border: none;
    background: transparent;
    color: var(--text-dark);
}
.chat-back-button svg {
    width: 22px;
    height: 22px;
}
.chat-header h2 {
    margin: 0;
    color: var(--text-dark);
    font-size: 18px;
}
.chat-messages {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    padding: 24px;
    background-color: #fffdfb;
}

/* 訊息輸入區 */
.chat-form {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-top: 1px solid var(--border);
}
.chat-form input {
    flex: 1;
    min-width: 0;
    padding: 12px 16px;
    border: 1px solid #e6ded7;
    border-radius: 10px;
    background-color: var(--white);
    font: inherit;
    font-size: 14px;
    outline: none;
}
.chat-form input:focus {
    border-color: var(--primary);
}
.chat-send-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 18px;
    border: none;
    border-radius: 10px;
    background-color: var(--primary);
    color: var(--white);
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}
.chat-send-button:hover {
    background-color: var(--primary-dark);
}
.chat-send-button svg {
    width: 17px;
    height: 17px;
}

/* 聊天訊息氣泡 */
/* 每一則訊息的外層容器 */
.chat-message-item {
    display: flex;
    width: 100%;
}
/* 對方訊息靠左 */
.chat-message-item.received {
    justify-content: flex-start;
}
/* 自己訊息靠右 */
.chat-message-item.sent {
    justify-content: flex-end;
}
/* 聊天氣泡共用樣式 */
.chat-message-bubble {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.6;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
}
/* 對方傳送的訊息 */
.chat-message-item.received .chat-message-bubble {
    background-color: #f3f3f3;
    color: var(--text-dark);
    border-bottom-left-radius: 4px;
}
/* 自己傳送的訊息 */
.chat-message-item.sent .chat-message-bubble {
    background-color: var(--primary);
    color: var(--white);
    border-bottom-right-radius: 4px;
}

/* 家教預約系統｜聊天室預約卡片 */
.booking-message-card {
    width: 320px;
    max-width: 100%;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background-color: var(--white);
    box-shadow: 0 3px 12px rgba(80, 50, 30, 0.06);
    color: var(--text-dark);
}
.booking-card-title {
    margin: 0 0 12px;
    font-size: 17px;
    font-weight: 700;
}
.booking-card-status {
    display: inline-block;
    margin-bottom: 16px;
    padding: 5px 12px;
    border-radius: 20px;
    background-color: #fff0e5;
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
}
.booking-card-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.booking-card-detail-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
}
.booking-card-detail-row span {
    color: var(--text-gray);
}
.booking-card-detail-row strong {
    text-align: right;
    font-weight: 600;
}
.booking-card-amount {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 16px;
    font-size: 14px;
}
.booking-card-amount strong {
    color: var(--primary);
    font-size: 19px;
}

/* 家教預約卡片｜老師操作按鈕 */
.booking-card-actions {
    display: flex;
    gap: 10px;
    margin-top: 18px;
}
.booking-card-actions button {
    flex: 1;
    padding: 11px 8px;
    border-radius: 9px;
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}
.booking-reject-button {
    border: 1px solid var(--border);
    background-color: var(--white);
    color: var(--text-gray);
}
.booking-reject-button:hover {
    background-color: #f7f7f7;
}
.booking-accept-button {
    border: 1px solid var(--primary);
    background-color: var(--primary);
    color: var(--white);
}
.booking-accept-button:hover {
    background-color: var(--primary-dark);
}

/* 家教預約卡片｜標題與狀態 */
/* 標題靠左、狀態靠右 */
.booking-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
}
/* 移除標題原本的下方間距 */
.booking-card-header .booking-card-title {
    margin: 0;
}
/* 預約狀態共用樣式 */
.booking-card-header .booking-card-status {
    flex-shrink: 0;
    margin-bottom: 0;
    padding: 7px 12px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
    white-space: nowrap;
}
/* 等待回覆 */
.booking-card-status.pending {
    background-color: #fff0e5;
    color: #e9691c;
}
/* 已接受 */
.booking-card-status.accepted {
    background-color: #e5f5e9;
    color: #208044;
}
/* 已拒絕 */
.booking-card-status.rejected {
    background-color: #fce9e9;
    color: #c83e3e;
}
/* 已取消 */
.booking-card-status.cancelled {
    background-color: #f0f0f0;
    color: #666666;
}

/* RWD 平板 */
@media (max-width: 800px) {
    .messages-layout {
        grid-template-columns: 260px minmax(0, 1fr);
    }
}

/* RWD 手機 */
@media (max-width: 600px) {
    .messages-page {
        height: calc(100dvh - 200px);
        min-height: 0;
        padding: 12px 14px;
        overflow: hidden;
    }
    .messages-heading {
        margin-bottom: 12px;
    }
    .messages-heading h1 {
        font-size: 23px;
        margin-bottom: 6px;
    }
    .messages-heading p {
        font-size: 13px;
    }
    .messages-layout {
        display: block;
        flex: 1;
        height: auto;
        min-height: 0;
    }
    /* 預設顯示對話列表 */
    .conversations-panel {
        height: 100%;
        border-right: none;
        border-bottom: none;
    }
    .chat-panel {
        display: none;
        height: 100%;
    }
    /* 選擇對話後顯示聊天視窗 */
    .messages-layout.chat-open .conversations-panel {
        display: none;
    }
    .messages-layout.chat-open .chat-panel {
        display: flex;
    }
    /* 手機版返回按鈕 */
    .chat-back-button {
        display: flex;
    }
    .chat-form {
        padding: 12px;
        gap: 8px;
    }
    .chat-send-button {
        padding: 12px;
    }
    .booking-message-card {
        width: 100%;
        padding: 16px;
    }
}