/* V3 Message Center Styles */

/* Offcanvas 过渡动画 */
.offcanvas {
    transition: transform 0.3s ease-in-out;
}

/* 悬浮按钮样式 */
.message-center-floating-button {
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 9999; /* 确保盖在 iframe 上方 */
    user-select: none;
}

.message-center-floating-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25) !important;
}

.message-center-floating-button:active {
    transform: scale(0.95);
}

.message-center-floating-button:focus {
    outline: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15), 0 0 0 3px rgba(102, 126, 234, 0.25) !important;
}

/* 未读消息徽章 */
.message-center-floating-badge {
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    font-size: 11px;
    font-weight: 600;
    line-height: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.message-center-floating-badge:empty {
    min-width: 12px;
    width: 12px;
    height: 12px;
    padding: 0;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .message-center-floating-button {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }
}

/* Message Bubbles */
.message-bubble {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.9rem;
    line-height: 1.4;
    position: relative;
    margin-bottom: 8px;
}

.message-bubble.user {
    background: var(--bs-primary);
    color: white;
    border-bottom-right-radius: 4px;
    margin-left: auto;
}

.message-bubble.assistant {
    background: #f3f4f6;
    color: #1f2937;
    border-bottom-left-radius: 4px;
    margin-right: auto;
}

/* Offcanvas Body - Fix Height Calculation */
#messageCenterWindow .offcanvas-body {
    min-height: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Tab Content Area - Modern Styling */
#messageCenterTabContent {
    background-color: #f8f9fa;
    min-height: 0;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
}

/* Tab Pane - Ensure proper height and only show active pane */
#messageCenterTabContent .tab-pane {
    min-height: 0;
}

#messageCenterTabContent .tab-pane.active {
    display: flex;
    flex-direction: column;
}

#messageCenterTabContent::-webkit-scrollbar {
    width: 6px;
}

#messageCenterTabContent::-webkit-scrollbar-track {
    background: transparent;
}

#messageCenterTabContent::-webkit-scrollbar-thumb {
    background: #dee2e6;
    border-radius: 3px;
}

#messageCenterTabContent::-webkit-scrollbar-thumb:hover {
    background: #adb5bd;
}

/* Notification Message Items - Modern Card Style */
#messageCenterMessagesList {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 0;
    flex: 1 1 auto;
}

.message-center-message-item {
    background: white;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: all 0.2s ease;
    border: 1px solid #f0f0f0;
    cursor: pointer;
}

.message-center-message-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
    border-color: #e0e0e0;
}

.message-center-message-item.task-completed {
    border-left: 3px solid #198754;
}

.message-center-message-item.task-started {
    border-left: 3px solid #0d6efd;
}

.message-center-message-item.notification {
    border-left: 3px solid #ffc107;
}

.message-center-notification-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.message-center-notification-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #212529;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.message-center-notification-title i {
    font-size: 1rem;
    color: #6c757d;
}

.message-center-message-close {
    background: none;
    border: none;
    color: #adb5bd;
    font-size: 1.125rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.message-center-message-close:hover {
    background-color: #f8f9fa;
    color: #6c757d;
}

.message-center-notification-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.message-center-notification-images {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.message-center-notification-image {
    width: 100%;
    max-width: 200px;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.message-center-notification-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.message-center-notification-text {
    font-size: 0.875rem;
    color: #495057;
    line-height: 1.5;
    margin: 0;
}

.message-center-notification-time {
    font-size: 0.75rem;
    color: #adb5bd;
    margin: 0;
}

.message-center-notification-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.875rem;
    padding-top: 0.875rem;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.message-center-message-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 8px;
    border: 1px solid #dee2e6;
    background: white;
    color: #495057;
    transition: all 0.2s ease;
    cursor: pointer;
    font-weight: 500;
}

.message-center-message-btn:hover {
    background-color: #f8f9fa;
    border-color: #adb5bd;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.message-center-notification-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 8px;
    border: none;
    background: white;
    color: #495057;
    transition: all 0.2s ease;
    cursor: pointer;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.message-center-notification-btn:hover {
    background-color: #f8f9fa;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.message-center-notification-btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.message-center-notification-btn-primary:hover {
    background: linear-gradient(135deg, #5568d3 0%, #653a8f 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
}

.message-center-notification-btn-primary:active {
    transform: translateY(0);
}

/* Chat List Header - Modern Design */
.message-center-chat-list-header {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 1rem 1.25rem;
    flex-shrink: 0;
}

.message-center-chat-list-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.message-center-chat-list-header-title {
    display: flex;
    align-items: center;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #212529;
}

.message-center-chat-list-header-title i {
    color: #667eea;
    font-size: 1.1rem;
}

.message-center-chat-list-header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.message-center-chat-list-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    color: #6c757d;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.message-center-chat-list-action-btn:hover {
    background: #f8f9fa;
    color: #495057;
    border-color: #e9ecef;
}

.message-center-chat-list-action-btn:active {
    transform: scale(0.95);
}

.message-center-chat-list-action-btn i {
    font-size: 1rem;
}

/* Chat List Container */
.message-center-chat-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    scrollbar-width: thin;
}

/* Chat Session Items - Modern Card Style */
.message-center-notification-item.chat-session {
    background: white;
    border-radius: 16px;
    padding: 1.125rem 1.25rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.06);
    cursor: pointer;
    position: relative;
}

.message-center-notification-item.chat-session::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: transparent;
    transition: all 0.25s ease;
}

.message-center-notification-item.chat-session:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
    border-color: rgba(102, 126, 234, 0.2);
    background: linear-gradient(to right, #ffffff 0%, #fafbff 100%);
}

.message-center-notification-item.chat-session:hover::before {
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
}

.message-center-notification-item.chat-session.has-unread {
    background: linear-gradient(to right, #f8f9ff 0%, #ffffff 100%);
    border-left: 4px solid #667eea;
    box-shadow: 0 2px 12px rgba(102, 126, 234, 0.12), 0 1px 4px rgba(102, 126, 234, 0.08);
}

.message-center-notification-item.chat-session.has-unread::before {
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
}

.message-center-notification-item.chat-session.is-pinned {
    background: linear-gradient(to right, #fffbf0 0%, #ffffff 100%);
    border-left: 4px solid #ffc107;
}

.message-center-notification-item.chat-session.is-pinned::before {
    background: #ffc107;
}

.message-center-chat-card {
    display: flex;
    gap: 0.875rem;
    align-items: flex-start;
}

.message-center-chat-card-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.message-center-chat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
}

.message-center-chat-card-title {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #212529;
}

.message-center-chat-card-avatar {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    position: relative;
}

.message-center-chat-card-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.message-center-chat-card-avatar-placeholder span,
.message-center-chat-card-avatar-icon i {
    font-size: 1rem;
    letter-spacing: 0.05em;
}

.message-center-chat-status {
    display: inline-flex;
    gap: 0.25rem;
    align-items: center;
}

.message-center-chat-status-badge {
    width: 20px;
    height: 20px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.05);
    color: #6c757d;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.message-center-chat-status-badge-muted {
    background: rgba(108, 117, 125, 0.15);
    color: #6c757d;
}

.message-center-chat-card-preview {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
    color: #6c757d;
}

.message-center-chat-card-preview i {
    font-size: 0.9rem;
    margin-top: 0.1rem;
}

.message-center-chat-preview-text {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.45;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.message-center-notification-item.chat-session.has-unread .message-center-chat-card-preview {
    color: #343a40;
    font-weight: 500;
}

/* Chat Session Header - Modern Layout */
.message-center-notification-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.875rem;
    gap: 1rem;
}

.message-center-chat-header-left {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    flex: 1;
    min-width: 0;
}

/* Chat Avatar - Modern Circle Design */
.message-center-chat-avatar {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid rgba(102, 126, 234, 0.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.25s ease;
}

.message-center-notification-item.chat-session:hover .message-center-chat-avatar {
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: scale(1.05);
}

/* Notification Icon (for notification session) */
.message-center-notification-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.25s ease;
}

.message-center-notification-item.chat-session:hover .message-center-notification-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Chat Header Info */
.message-center-chat-header-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.message-center-notification-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #212529;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1.4;
}

.message-center-notification-title i {
    font-size: 1rem;
    color: #667eea;
    flex-shrink: 0;
}

.message-center-chat-nickname {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.message-center-chat-title {
    font-size: 0.8125rem;
    color: #6c757d;
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.4;
}

/* Chat Meta (Time & Badge) */
.message-center-chat-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.375rem;
    flex-shrink: 0;
}

.message-center-notification-time {
    font-size: 0.75rem;
    color: #adb5bd;
    white-space: nowrap;
    font-weight: 500;
}

.message-center-chat-session-badge {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 0.25rem 0.625rem;
    border-radius: 12px;
    min-width: 22px;
    text-align: center;
    line-height: 1.4;
    box-shadow: 0 2px 6px rgba(220, 53, 69, 0.3);
    letter-spacing: 0.02em;
}

/* Chat Session Content */
.message-center-notification-content {
    margin-top: 0.5rem;
    padding-left: 0.875rem;
}

.message-center-notification-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.message-center-notification-text {
    font-size: 0.875rem;
    color: #6c757d;
    margin: 0;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 2.625rem;
}

.message-center-notification-item.chat-session.has-unread .message-center-notification-text {
    color: #495057;
    font-weight: 500;
}

.message-center-chat-session-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 0.85rem;
    padding-top: 0.85rem;
    border-top: 1px dashed #e9ecef;
}

.message-center-chat-session-action {
    border-radius: 999px;
    font-weight: 600;
    padding: 0.45rem 1.25rem;
}

.message-center-chat-session-action i {
    font-size: 0.9rem;
}

/* Scrollbar Styling for Lists */
#messageCenterMessagesList::-webkit-scrollbar,
.message-center-chat-list::-webkit-scrollbar {
    width: 6px;
}

#messageCenterMessagesList::-webkit-scrollbar-track,
.message-center-chat-list::-webkit-scrollbar-track {
    background: transparent;
}

#messageCenterMessagesList::-webkit-scrollbar-thumb,
.message-center-chat-list::-webkit-scrollbar-thumb {
    background: #dee2e6;
    border-radius: 3px;
}

#messageCenterMessagesList::-webkit-scrollbar-thumb:hover,
.message-center-chat-list::-webkit-scrollbar-thumb:hover {
    background: #adb5bd;
}

/* Empty State */
#messageCenterEmpty {
    pointer-events: none;
}

/* Mobile Adaption */
@media (max-width: 576px) {
    .offcanvas.offcanvas-end {
        width: 100% !important;
        border-left: none !important;
    }

    .message-center-floating-button {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 52px;
        height: 52px;
    }

    .message-center-floating-button i {
        font-size: 1.25rem !important;
    }

    .message-center-message-item,
    .message-center-chat-session-item {
        padding: 0.875rem;
        border-radius: 10px;
    }

    #messageCenterMessagesList,
    .message-center-chat-list {
        padding: 0.75rem;
        gap: 0.625rem;
    }

    .message-center-chat-list-header {
        padding: 0.875rem 1rem;
    }

    .message-center-chat-list-header-title {
        font-size: 0.875rem;
    }

    .message-center-chat-list-action-btn {
        padding: 0.375rem 0.5rem;
        font-size: 0.8125rem;
    }

    .message-center-notification-item.chat-session {
        padding: 1rem;
        border-radius: 12px;
    }

    .message-center-chat-avatar,
    .message-center-notification-icon {
        width: 44px;
        height: 44px;
    }

    .message-center-chat-card {
        gap: 0.75rem;
    }

    .message-center-chat-card-avatar {
        width: 44px;
        height: 44px;
        border-radius: 10px;
    }

    .message-center-chat-card-preview {
        font-size: 0.8125rem;
    }
}