/* AI Chat Frontend Styles */
:root {
    --chat-color: #007cba;
    --chat-hover-color: #005a87;
    --chat-text-color: #333;
    --chat-bg-color: #ffffff;
    --chat-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    --chat-border-radius: 20px;
    --chat-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --chat-bottom-distance: 20px;
    --chat-top-distance: 20px;
}

/* Chat Widget Container */
.ai-chat-widget {
    position: fixed !important;
    z-index: 999999 !important;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.4;
}

/* Main Chat Toggle Button */
.chat-toggle {
    width: 60px;
    height: 60px;
    background: var(--chat-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--chat-shadow);
    transition: var(--chat-transition);
    position: relative;
    z-index: 1000001;
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
}

.chat-toggle.active {
    background: var(--chat-hover-color);
}

.chat-icon {
    color: white;
    font-size: 24px;
    position: relative;
}

.chat-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Expandable Platform Menu */
.platform-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 300px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--chat-shadow);
    padding: 20px;
    transform: translateY(20px) scale(0.9);
    opacity: 0;
    visibility: hidden;
    transition: var(--chat-transition);
    z-index: 1000000;
}

.platform-menu.show {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
}

.platform-menu::after {
    content: '';
    position: absolute;
    bottom: -10px;
    right: 20px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid white;
}

.platform-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 10px;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--chat-transition);
    text-decoration: none;
    color: var(--chat-text-color);
    background: #f8f9fa;
    border: 2px solid transparent;
}

.platform-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-color: var(--chat-color);
    background: white;
}

.platform-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    font-size: 20px;
    color: white;
    position: relative;
    overflow: hidden;
}

.platform-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--platform-color, #007cba), var(--platform-color-dark, #005a87));
    border-radius: 50%;
}

.platform-icon i {
    position: relative;
    z-index: 1;
}

.platform-name {
    font-size: 12px;
    font-weight: 500;
    text-align: center;
    line-height: 1.2;
}

/* Platform-specific colors */
.platform-item[data-platform="whatsapp"] .platform-icon {
    --platform-color: #25d366;
    --platform-color-dark: #1da851;
}

.platform-item[data-platform="facebook"] .platform-icon {
    --platform-color: #0084ff;
    --platform-color-dark: #0056cc;
}

.platform-item[data-platform="line"] .platform-icon {
    --platform-color: #00c300;
    --platform-color-dark: #009900;
}

.platform-item[data-platform="telegram"] .platform-icon {
    --platform-color: #0088cc;
    --platform-color-dark: #006699;
}

.platform-item[data-platform="discord"] .platform-icon {
    --platform-color: #7289da;
    --platform-color-dark: #5b6eae;
}

.platform-item[data-platform="slack"] .platform-icon {
    --platform-color: #4a154b;
    --platform-color-dark: #350f35;
}

.platform-item[data-platform="teams"] .platform-icon {
    --platform-color: #6264a7;
    --platform-color-dark: #4e5085;
}

.platform-item[data-platform="wechat"] .platform-icon {
    --platform-color: #7bb32e;
    --platform-color-dark: #629225;
}

.platform-item[data-platform="qq"] .platform-icon {
    --platform-color: #eb1923;
    --platform-color-dark: #bc151c;
}

.platform-item[data-platform="instagram"] .platform-icon {
    --platform-color: #e4405f;
    --platform-color-dark: #b7334c;
}

.platform-item[data-platform="ai-chat"] .platform-icon {
    --platform-color: #007cba;
    --platform-color-dark: #005a87;
}

/* Position Classes */
.ai-chat-widget.bottom-right {
    bottom: var(--chat-bottom-distance, 20px) !important;
    right: 20px !important;
}

.ai-chat-widget.bottom-left {
    bottom: var(--chat-bottom-distance, 20px);
    left: 20px;
}

.ai-chat-widget.top-right {
    top: var(--chat-top-distance, 20px);
    right: 20px;
}

.ai-chat-widget.top-left {
    top: var(--chat-top-distance, 20px);
    left: 20px;
}

.ai-chat-widget.middle-right {
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}

.ai-chat-widget.middle-left {
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
}

/* Size Classes - 使用 !important 確保優先級 */
.ai-chat-widget.small .chat-toggle {
    width: 50px !important;
    height: 50px !important;
}

.ai-chat-widget.medium .chat-toggle {
    width: 60px !important;
    height: 60px !important;
}

.ai-chat-widget.large .chat-toggle {
    width: 70px !important;
    height: 70px !important;
}

/* Size Classes for Platform Items - 使用 !important 確保優先級 */
.ai-chat-widget.small .platform-item {
    width: 50px !important;
    height: 50px !important;
}

.ai-chat-widget.small .platform-icon {
    width: 50px !important;
    height: 50px !important;
    min-width: 50px !important;
    min-height: 50px !important;
    font-size: 18px !important;
}

.ai-chat-widget.medium .platform-item {
    width: 60px !important;
    height: 60px !important;
}

.ai-chat-widget.medium .platform-icon {
    width: 60px !important;
    height: 60px !important;
    min-width: 60px !important;
    min-height: 60px !important;
    font-size: 20px !important;
}

.ai-chat-widget.large .platform-item {
    width: 70px !important;
    height: 70px !important;
}

.ai-chat-widget.large .platform-icon {
    width: 70px !important;
    height: 70px !important;
    min-width: 70px !important;
    min-height: 70px !important;
    font-size: 22px !important;
}

/* Size Classes for Platform Menu - 使用 !important 確保優先級 */
.ai-chat-widget.small .platform-menu {
    width: 50px !important;
}

.ai-chat-widget.medium .platform-menu {
    width: 60px !important;
}

.ai-chat-widget.large .platform-menu {
    width: 70px !important;
}

/* Chat Toggle Button */
.chat-toggle {
    width: 60px; /* Default medium size */
    height: 60px; /* Default medium size */
    background: var(--chat-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    border: none;
    z-index: 1000;
}

.chat-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--chat-hover-color);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 50%;
}

.chat-toggle:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

.chat-toggle:hover::before {
    opacity: 1;
}

.chat-toggle.active {
    background: var(--chat-hover-color);
    transform: rotate(45deg) scale(1.1);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.chat-toggle.active::before {
    background: var(--chat-color);
    opacity: 1;
}

.chat-toggle.active .chat-icon {
    transform: rotate(-45deg);
}

.chat-toggle.active .chat-icon i:before {
    content: "\f00d"; /* X icon */
}

/* Chat Icon */
.chat-icon {
    color: white;
    font-size: 20px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.chat-icon i {
    transition: all 0.3s ease;
}

.chat-toggle:hover .chat-icon i {
    transform: scale(1.1);
}

/* Chat Count Badge */
.chat-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    border: 2px solid white;
}

/* Platform Menu */
.platform-menu {
    position: absolute;
    bottom: 80px;
    right: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
    transform: translateY(20px) scale(0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    min-width: auto;
    width: 60px; /* Default medium size */
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

/* Platform Menu Position Adjustments */
.ai-chat-widget.top-right .platform-menu,
.ai-chat-widget.top-left .platform-menu {
    bottom: auto !important;
    top: 80px !important;
    transform: translateY(-20px) scale(0.8) !important; /* 向下展開動畫 */
    opacity: 0 !important;
    visibility: hidden !important;
}

.ai-chat-widget.top-right .platform-menu.show,
.ai-chat-widget.top-left .platform-menu.show {
    transform: translateY(0) scale(1) !important; /* 向下展開完成 */
    opacity: 1 !important;
    visibility: visible !important;
}

.ai-chat-widget.middle-right .platform-menu,
.ai-chat-widget.middle-left .platform-menu {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) translateY(20px) scale(0.8);
}

.ai-chat-widget.middle-right .platform-menu.show,
.ai-chat-widget.middle-left .platform-menu.show {
    transform: translateY(-50%) translateY(0) scale(1);
}

.ai-chat-widget.bottom-left .platform-menu,
.ai-chat-widget.middle-left .platform-menu,
.ai-chat-widget.top-left .platform-menu {
    right: auto;
    left: 0;
}

/* 通用的platform-menu.show规则，但优先级较低 */
.platform-menu.show {
    opacity: 1;
    visibility: visible;
}

/* 默认位置的transform规则 */
.ai-chat-widget.bottom-right .platform-menu.show,
.ai-chat-widget.bottom-left .platform-menu.show {
    transform: translateY(0) scale(1);
}

/* 确保顶部位置的规则优先级最高 */
.ai-chat-widget.top-right .platform-menu,
.ai-chat-widget.top-left .platform-menu {
    bottom: auto !important;
    top: 80px !important;
    /* DEBUG: 临时边框来确认位置 */
    border: 2px solid red !important;
}

.ai-chat-widget.top-right .platform-menu.show,
.ai-chat-widget.top-left .platform-menu.show {
    bottom: auto !important;
    top: 80px !important;
    /* DEBUG: 临时背景色来确认展开状态 */
    background-color: yellow !important;
}

.platform-menu.show .platform-item {
    animation: slideInUp 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    opacity: 0;
    transform: translateY(30px) scale(0.8);
}

.platform-menu.show .platform-item:nth-child(1) { animation-delay: 0.05s; }
.platform-menu.show .platform-item:nth-child(2) { animation-delay: 0.1s; }
.platform-menu.show .platform-item:nth-child(3) { animation-delay: 0.15s; }
.platform-menu.show .platform-item:nth-child(4) { animation-delay: 0.2s; }
.platform-menu.show .platform-item:nth-child(5) { animation-delay: 0.25s; }
.platform-menu.show .platform-item:nth-child(6) { animation-delay: 0.3s; }
.platform-menu.show .platform-item:nth-child(7) { animation-delay: 0.35s; }
.platform-menu.show .platform-item:nth-child(8) { animation-delay: 0.4s; }

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.8);
    }
    60% {
        opacity: 1;
        transform: translateY(-5px) scale(1.05);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.platform-list {
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.platform-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px; /* Default medium size */
    height: 60px; /* Default medium size */
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    position: relative;
    overflow: visible;
    background: transparent;
    padding: 0;
}

.platform-item:hover {
    transform: scale(1.1);
}

.platform-item:active {
    transform: scale(0.95);
}

.platform-icon {
    width: 60px; /* Default medium size */
    height: 60px; /* Default medium size */
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 20px;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.95);
    aspect-ratio: 1;
    min-width: 60px; /* Default medium size */
    min-height: 60px; /* Default medium size */
}

.platform-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0) 100%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.platform-item:hover .platform-icon {
    transform: scale(1.05);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
}

.platform-item:hover .platform-icon::before {
    opacity: 1;
}

.platform-item[data-platform="facebook"] .platform-icon {
    background: linear-gradient(135deg, #1877f2 0%, #42a5f5 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(24, 119, 242, 0.3);
}

.platform-item[data-platform="whatsapp"] .platform-icon {
    background: linear-gradient(135deg, #25d366 0%, #4caf50 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.platform-item[data-platform="line"] .platform-icon {
    background: linear-gradient(135deg, #00c300 0%, #4caf50 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 195, 0, 0.3);
}

.platform-item[data-platform="wechat"] .platform-icon {
    background: linear-gradient(135deg, #7bb32e 0%, #8bc34a 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(123, 179, 46, 0.3);
}

.platform-item[data-platform="ai-chat"] .platform-icon {
    background: var(--chat-color);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.platform-item[data-platform="qq"] .platform-icon {
    background: linear-gradient(135deg, #eb1923 0%, #f44336 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(235, 25, 35, 0.3);
}

.platform-item[data-platform="instagram"] .platform-icon {
    background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(188, 24, 136, 0.3);
}

.platform-item[data-platform="email"] .platform-icon {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.platform-item[data-platform="phone"] .platform-icon {
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.platform-item[data-platform="telegram"] .platform-icon {
    background: linear-gradient(135deg, #0088cc 0%, #29b6f6 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 136, 204, 0.3);
}

.platform-name {
    display: none;
}

/* Chat Window */
.chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: var(--chat-border-radius);
    box-shadow: var(--chat-shadow);
    transform: translateY(20px) scale(0.8);
    opacity: 0;
    visibility: hidden;
    transition: var(--chat-transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Chat Window Position Adjustments */
.ai-chat-widget.top-right .chat-window,
.ai-chat-widget.top-left .chat-window {
    bottom: auto;
    top: 80px;
    transform: translateY(-20px) scale(0.8); /* 向下展開動畫 */
}

.ai-chat-widget.top-right .chat-window.show,
.ai-chat-widget.top-left .chat-window.show {
    transform: translateY(0) scale(1); /* 向下展開完成 */
}

.ai-chat-widget.middle-right .chat-window,
.ai-chat-widget.middle-left .chat-window {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) translateY(20px) scale(0.8);
}

.ai-chat-widget.middle-right .chat-window.show,
.ai-chat-widget.middle-left .chat-window.show {
    transform: translateY(-50%) translateY(0) scale(1);
}

.ai-chat-widget.bottom-left .chat-window,
.ai-chat-widget.middle-left .chat-window,
.ai-chat-widget.top-left .chat-window {
    right: auto;
    left: 0;
}

.chat-window.show {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
}

.chat-window.closing {
    transform: translateY(20px) scale(0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.chat-window.minimized {
    height: 50px !important;
    min-height: 50px !important;
    max-height: 50px !important;
    overflow: hidden;
}

.chat-window.minimized .chat-messages,
.chat-window.minimized .chat-input {
    display: none !important;
}

.chat-window.minimized .chat-header {
    border-radius: var(--chat-border-radius);
}

/* Fullscreen Mode */
.chat-window.fullscreen {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    max-width: none !important;
    max-height: none !important;
    border-radius: 0 !important;
    z-index: 1000000 !important;
    transform: none !important;
}

.chat-window.fullscreen .chat-header {
    border-radius: 0;
}

.chat-window.fullscreen .chat-messages {
    flex: 1;
    max-height: none;
}

/* Fullscreen button icon change */
.chat-window.fullscreen .fullscreen-btn i {
    transform: rotate(45deg);
}

.chat-window.fullscreen .fullscreen-btn i:before {
    content: "\f066"; /* fa-compress */
}

/* Chat Header */
.chat-header {
    background: var(--chat-color);
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    border-radius: var(--chat-border-radius) var(--chat-border-radius) 0 0;
}

.chat-title-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 16px;
}

.chat-title i {
    font-size: 18px;
}

.chat-subtitle {
    margin-top: 2px;
    margin-left: 28px; /* 對齊到標題文字的開始位置（圖標18px + gap 10px） */
}

.chat-subtitle small {
    font-size: 12px;
    line-height: 1.2;
    font-weight: 300;
    display: block;
}

.chat-controls {
    display: flex;
    gap: 10px;
}

.chat-controls button {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: var(--chat-transition);
}

.chat-controls button:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
    scrollbar-width: thin;
    scrollbar-color: #ccc transparent;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* Message Styles */
.message {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    animation: messageSlideIn 0.3s ease;
}

.message.user-message {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.bot-message .message-avatar {
    background: var(--chat-color);
    color: white;
}

.user-message .message-avatar {
    background: #28a745;
    color: white;
}

.message-content {
    max-width: 70%;
    position: relative;
}

.message-content p {
    background: white;
    padding: 12px 16px;
    border-radius: 18px;
    margin: 0;
    color: var(--chat-text-color);
    font-size: 14px;
    line-height: 1.4;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    word-wrap: break-word;
}

/* Links in chat messages */
.message-content a {
    color: #007cba;
    text-decoration: underline;
    word-break: break-all;
    transition: color 0.2s ease;
}

.message-content a:hover {
    color: #005a8b;
    text-decoration: none;
}

.user-message .message-content a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: underline;
}

.user-message .message-content a:hover {
    color: white;
    text-decoration: none;
}

.user-message .message-content p {
    background: var(--chat-color);
    color: white;
    border-radius: 18px 18px 6px 18px;
}

.bot-message .message-content p {
    border-radius: 18px 18px 18px 6px;
}

.message-time {
    display: block;
    font-size: 11px;
    color: #999;
    margin-top: 5px;
    text-align: right;
}

.user-message .message-time {
    text-align: left;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--chat-transition);
}

.typing-indicator.show {
    opacity: 1;
    transform: translateY(0);
}

.typing-indicator .message-avatar {
    background: var(--chat-color);
    color: white;
}

.typing-text {
    color: #666;
    font-size: 14px;
    margin-bottom: 5px;
    font-style: italic;
}

.typing-dots {
    background: white;
    padding: 12px 16px;
    border-radius: 18px 18px 18px 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.typing-dots span {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #999;
    margin: 0 2px;
    animation: typingDots 1.4s ease-in-out infinite both;
}

.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }

/* Chat Input */
.chat-input {
    padding: 20px;
    background: white;
    border-radius: 0 0 var(--chat-border-radius) var(--chat-border-radius);
    border-top: 1px solid #e0e0e0;
}

.input-container {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

#chat-input {
    flex: 1;
    border: 1px solid #e0e0e0;
    border-radius: 25px;
    padding: 12px 16px;
    font-size: 14px;
    outline: none;
    resize: none;
    min-height: 20px;
    max-height: 100px;
    transition: var(--chat-transition);
}

#chat-input:focus {
    border-color: var(--chat-color);
    box-shadow: 0 0 0 2px rgba(0, 124, 186, 0.1);
}

.send-btn {
    width: 40px;
    height: 40px;
    background: var(--chat-color);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--chat-transition);
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--chat-hover-color);
    transform: scale(1.05);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Animations */
.ai-chat-widget.animated .chat-toggle {
    animation: bounceIn 0.6s ease;
}

.ai-chat-widget.animated .platform-menu.show {
    animation: slideUp 0.3s ease;
}

.ai-chat-widget.animated .chat-window.show {
    animation: slideUp 0.3s ease;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typingDots {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Platform Bubbles Styles */
.platform-bubbles {
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: 15px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000000;
    /* Ensure enough space for tooltips */
}

/* 通用的platform-bubbles.show规则，但优先级较低 */
.platform-bubbles.show {
    opacity: 1;
    visibility: visible;
}

/* 默认位置的transform规则 */
.ai-chat-widget.bottom-right .platform-bubbles.show,
.ai-chat-widget.bottom-left .platform-bubbles.show,
.ai-chat-widget.middle-right .platform-bubbles.show,
.ai-chat-widget.middle-left .platform-bubbles.show {
    transform: translateY(0);
}

/* 确保顶部位置的平台泡泡规则优先级最高 */
.ai-chat-widget.top-right .platform-bubbles,
.ai-chat-widget.top-left .platform-bubbles {
    bottom: auto !important;
    top: 100% !important;
}

.ai-chat-widget.top-right .platform-bubbles.show,
.ai-chat-widget.top-left .platform-bubbles.show {
    bottom: auto !important;
    top: 100% !important;
}

/* Platform Bubbles Position Adjustments for Top Positions */
.ai-chat-widget.top-right .platform-bubbles,
.ai-chat-widget.top-left .platform-bubbles {
    bottom: auto !important;
    top: 100% !important;
    margin-bottom: 0 !important;
    margin-top: 15px !important;
    transform: translateY(-20px) !important; /* 向下展開動畫 */
    opacity: 0 !important;
    visibility: hidden !important;
}

.ai-chat-widget.top-right .platform-bubbles.show,
.ai-chat-widget.top-left .platform-bubbles.show {
    transform: translateY(0) !important; /* 向下展開完成 */
    opacity: 1 !important;
    visibility: visible !important;
}

.ai-chat-widget.top-left .platform-bubbles,
.ai-chat-widget.middle-left .platform-bubbles,
.ai-chat-widget.bottom-left .platform-bubbles {
    right: auto;
    left: 0;
    /* For left-side widgets, tooltips appear on the right */
    padding-left: 0;
    margin-right: 0;
    padding-right: 150px;
}

.platform-bubble {
    width: 50px;
    height: 50px;
    background: var(--platform-color, #007cba);
    border-radius: 50%;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    transform: scale(0) translateX(20px);
    opacity: 0;
    animation-delay: var(--animation-delay, 0s);
    background: linear-gradient(135deg, var(--platform-color), var(--platform-color-dark, var(--platform-color)));
}

.platform-bubble.animate {
    transform: scale(1) translateX(0);
    opacity: 1;
    animation: bubbleUp 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.platform-bubble:hover {
    transform: scale(1.15) translateX(0);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    filter: brightness(1.1);
}

.platform-bubble .bubble-icon {
    color: white;
    font-size: 20px;
}

.platform-bubble .bubble-tooltip {
    position: absolute;
    right: calc(100% + 15px);
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 1 !important;
    visibility: visible !important;
    display: block !important;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000002;
    min-width: 60px;
    text-align: center;
}

.platform-bubble .bubble-tooltip:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 100%;
    margin-top: -5px;
    width: 0;
    height: 0;
    border-left: 5px solid rgba(0, 0, 0, 0.8);
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}

/* Tooltip is always visible now, no need for hover effect */

/* Left-side tooltip positioning */
.ai-chat-widget.top-left .platform-bubble .bubble-tooltip,
.ai-chat-widget.middle-left .platform-bubble .bubble-tooltip,
.ai-chat-widget.bottom-left .platform-bubble .bubble-tooltip {
    right: auto;
    left: calc(100% + 15px);
}

.ai-chat-widget.top-left .platform-bubble .bubble-tooltip:after,
.ai-chat-widget.middle-left .platform-bubble .bubble-tooltip:after,
.ai-chat-widget.bottom-left .platform-bubble .bubble-tooltip:after {
    left: auto;
    right: 100%;
    border-left: none;
    border-right: 5px solid rgba(0, 0, 0, 0.8);
}

/* Ensure tooltips are not clipped by parent containers */
.ai-chat-widget,
.platform-bubbles,
.platform-bubble {
    overflow: visible !important;
}

/* Tooltip styles restored to normal */

/* Bubble Animation */
@keyframes bubbleUp {
    0% {
        transform: scale(0) translateX(20px);
        opacity: 0;
    }
    50% {
        transform: scale(1.1) translateX(-5px);
    }
    100% {
        transform: scale(1) translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    /* 使用CSS變數來控制距離 */
    .ai-chat-widget.bottom-right,
    .ai-chat-widget.bottom-left {
        bottom: var(--chat-bottom-distance, 20px);
    }

    .ai-chat-widget.top-right,
    .ai-chat-widget.top-left {
        top: var(--chat-top-distance, 20px);
    }

    .ai-chat-widget.middle-right,
    .ai-chat-widget.middle-left {
        top: 50%;
        transform: translateY(-50%);
    }

    /* 右側位置 */
    .ai-chat-widget.bottom-right,
    .ai-chat-widget.top-right,
    .ai-chat-widget.middle-right {
        right: 15px;
        left: auto;
    }

    /* 左側位置 */
    .ai-chat-widget.bottom-left,
    .ai-chat-widget.top-left,
    .ai-chat-widget.middle-left {
        left: 15px;
        right: auto;
    }



    .chat-window {
        width: calc(100vw - 40px);
        max-width: 350px;
        height: 450px;
        transition: all 0.3s ease;
    }

    /* 右側對話框 */
    .ai-chat-widget.bottom-right .chat-window,
    .ai-chat-widget.top-right .chat-window,
    .ai-chat-widget.middle-right .chat-window {
        right: 0;
        left: auto;
    }

    /* 左側對話框 */
    .ai-chat-widget.bottom-left .chat-window,
    .ai-chat-widget.top-left .chat-window,
    .ai-chat-widget.middle-left .chat-window {
        left: 0;
        right: auto;
    }

    /* 底部對話框位置 */
    .ai-chat-widget.bottom-right .chat-window,
    .ai-chat-widget.bottom-left .chat-window {
        bottom: calc(var(--chat-bottom-distance, 20px) + 70px);
        top: auto;
    }

    /* 頂部對話框位置 */
    .ai-chat-widget.top-right .chat-window,
    .ai-chat-widget.top-left .chat-window {
        top: calc(var(--chat-top-distance, 20px) + 70px);
        bottom: auto;
    }

    .platform-menu {
        width: 250px;
    }

    .chat-messages {
        padding: 15px;
    }

    .chat-input {
        padding: 15px;
    }

    /* 當輸入框獲得焦點時，向上推動對話框 */
    .ai-chat-widget.input-focused .chat-window {
        transform: translateY(-80px);
        transition: transform 0.3s ease;
    }


}

@media (max-width: 480px) {
    .chat-window {
        width: calc(100vw - 20px);
        height: 400px;
        transition: all 0.3s ease;
    }

    /* 底部位置的對話框 */
    .ai-chat-widget.bottom-right .chat-window,
    .ai-chat-widget.bottom-left .chat-window {
        bottom: calc(var(--chat-bottom-distance, 20px) + 70px);
    }

    /* 頂部位置的對話框 */
    .ai-chat-widget.top-right .chat-window,
    .ai-chat-widget.top-left .chat-window {
        top: calc(var(--chat-top-distance, 20px) + 70px);
        bottom: auto;
    }

    /* 右側對話框 */
    .ai-chat-widget.bottom-right .chat-window,
    .ai-chat-widget.top-right .chat-window,
    .ai-chat-widget.middle-right .chat-window {
        right: 10px;
        left: auto;
    }

    /* 左側對話框 */
    .ai-chat-widget.bottom-left .chat-window,
    .ai-chat-widget.top-left .chat-window,
    .ai-chat-widget.middle-left .chat-window {
        left: 10px;
        right: auto;
    }

    /* 中央對話框 */
    .ai-chat-widget.bottom-center .chat-window {
        left: 10px;
        right: 10px;
        width: calc(100vw - 20px);
    }

    .message-content {
        max-width: 85%;
    }

    .chat-toggle {
        width: 55px !important;
        height: 55px !important;
    }

    .chat-icon {
        font-size: 22px;
    }

    /* 輸入框焦點時的調整 */
    .ai-chat-widget.input-focused .chat-window {
        transform: translateY(-100px);
    }



    /* 手機上的縮小狀態 */
    .chat-window.minimized {
        height: 50px !important;
        width: calc(100vw - 20px) !important;
        max-width: 350px !important;
    }

    .chat-window.minimized .chat-header {
        padding: 10px 15px;
        border-radius: var(--chat-border-radius);
    }

    /* 確保縮小狀態下的可見性 */
    .chat-window.minimized.show {
        opacity: 1 !important;
        visibility: visible !important;
        transform: translateY(0) scale(1) !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .platform-menu {
        background: #2d3748;
        color: white;
    }
    
    .platform-item {
        border-color: #4a5568;
    }
    
    .platform-item:hover {
        background: #4a5568;
    }
    
    .platform-name {
        color: white;
    }
    
    .chat-window {
        background: #2d3748;
    }
    
    .chat-messages {
        background: #1a202c;
    }
    
    .bot-message .message-content p {
        background: #4a5568;
        color: white;
    }
    
    .chat-input {
        background: #2d3748;
        border-color: #4a5568;
    }
    
    #chat-input {
        background: #4a5568;
        border-color: #718096;
        color: white;
    }
    
    #chat-input::placeholder {
        color: #a0aec0;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .chat-toggle {
        border: 2px solid white;
    }
    
    .message-content p {
        border: 1px solid #333;
    }
    
    #chat-input {
        border: 2px solid #333;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .ai-chat-widget * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Language Switcher Styles */
.ai-chat-language-switcher {
    position: absolute;
    top: 10px;
    right: 45px;
    z-index: 1000;
}

.language-dropdown {
    position: relative;
    display: inline-block;
}

.language-current {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 12px;
    color: white;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: background-color 0.2s ease;
}

.language-current:hover {
    background: rgba(255, 255, 255, 0.2);
}

.language-options {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    min-width: 120px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1001;
    display: none;
}

.language-options.show {
    display: block;
    animation: slideDown 0.2s ease;
}

.language-option {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s ease;
}

.language-option:hover {
    background: #f0f0f0;
}

.language-option.active {
    background: #e3f2fd;
    color: var(--chat-color);
}

/* RTL Language Support */
.ai-chat-widget[dir="rtl"] {
    text-align: right;
}

.ai-chat-widget[dir="rtl"] .chat-window {
    direction: rtl;
}

.ai-chat-widget[dir="rtl"] .chat-messages {
    direction: rtl;
}

.ai-chat-widget[dir="rtl"] .user-message {
    margin-left: 20px;
    margin-right: 0;
}

.ai-chat-widget[dir="rtl"] .bot-message {
    margin-right: 20px;
    margin-left: 0;
}

.ai-chat-widget[dir="rtl"] .platform-menu {
    direction: rtl;
}

.ai-chat-widget[dir="rtl"] .ai-chat-language-switcher {
    right: auto;
    left: 45px;
}

/* Enhanced Mobile Optimizations */
@media (max-width: 480px) {
    .ai-chat-widget {
        z-index: 999999;
    }

    /* 保持用戶設置的位置，只調整聊天窗口 */
    .ai-chat-widget .chat-window {
        position: fixed !important;
        bottom: 70px !important;
        width: calc(100vw - 40px) !important;
        max-width: 350px !important;
        height: 400px !important;
    }

    /* 右側位置的聊天窗口 */
    .ai-chat-widget.bottom-right .chat-window,
    .ai-chat-widget.right-bottom .chat-window,
    .ai-chat-widget.right-middle .chat-window {
        right: 20px !important;
        left: auto !important;
    }

    /* 左側位置的聊天窗口 */
    .ai-chat-widget.bottom-left .chat-window,
    .ai-chat-widget.left-bottom .chat-window,
    .ai-chat-widget.left-middle .chat-window,
    .ai-chat-widget.left-top .chat-window {
        left: 20px !important;
        right: auto !important;
    }


    
    .ai-chat-widget.mobile-fullscreen .chat-window {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100% !important;
        height: 100% !important;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }
    
    .ai-chat-widget.mobile-fullscreen .chat-toggle {
        display: none;
    }
    
    .mobile-close-btn {
        display: block;
        position: absolute;
        top: 10px;
        right: 10px;
        background: rgba(0, 0, 0, 0.1);
        border: none;
        border-radius: 50%;
        width: 30px;
        height: 30px;
        cursor: pointer;
        z-index: 1002;
    }
    
    .mobile-close-btn::before,
    .mobile-close-btn::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 15px;
        height: 2px;
        background: #666;
        transform: translate(-50%, -50%) rotate(45deg);
    }
    
    .mobile-close-btn::after {
        transform: translate(-50%, -50%) rotate(-45deg);
    }
    
    .chat-input {
        padding: 15px;
        border-top: 1px solid #eee;
    }
    
    #chat-input {
        font-size: 16px; /* Prevent zoom on iOS */
        min-height: 44px; /* iOS touch target size */
    }
    
    .platform-menu {
        bottom: 70px;
        max-height: 80vh;
        overflow-y: auto;
        width: 56px;
        flex-direction: column;
        gap: 8px;
    }

    .platform-menu .platform-list {
        max-height: none;
        gap: 8px;
    }

    .platform-menu .platform-item {
        width: 56px;
        height: 56px;
        padding: 0;
    }

    .platform-menu .platform-icon {
        width: 56px;
        height: 56px;
    }
}

/* Tablet Optimizations */
@media (min-width: 481px) and (max-width: 768px) {
    .chat-window {
        width: 400px;
        height: 500px;
    }
    
    .chat-toggle {
        width: 55px;
        height: 55px;
    }
}

/* Large Screen Optimizations */
@media (min-width: 1200px) {
    .chat-window {
        width: 400px;
        height: 600px;
    }
}

/* Accessibility Improvements */
.ai-chat-widget [tabindex="0"]:focus,
.ai-chat-widget button:focus,
.ai-chat-widget input:focus {
    outline: 2px solid var(--chat-color);
    outline-offset: 2px;
}

/* Screen Reader Only Text */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading States */
.chat-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.chat-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--chat-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced Notification Styles */
.ai-chat-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--chat-bg-color);
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    box-shadow: var(--chat-shadow);
    z-index: 1000000;
    max-width: 300px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.ai-chat-notification.show {
    transform: translateX(0);
}

.ai-chat-notification.success {
    border-left: 4px solid #28a745;
}

.ai-chat-notification.error {
    border-left: 4px solid #dc3545;
}

.ai-chat-notification.warning {
    border-left: 4px solid #ffc107;
}

.ai-chat-notification.info {
    border-left: 4px solid #17a2b8;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--chat-text-color);
}

.notification-message {
    font-size: 14px;
    color: #666;
    line-height: 1.4;
}

.notification-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: #999;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-close:hover {
    color: #666;
}

/* Print Styles */
@media print {
    .ai-chat-widget {
        display: none !important;
    }
}

/* WeChat QR Code Modal */
.ai-chat-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.ai-chat-modal-content {
    background-color: #fff;
    margin: 10% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

.ai-chat-modal-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ai-chat-modal-header h3 {
    margin: 0;
    color: #333;
    font-size: 18px;
}

.ai-chat-modal-close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.ai-chat-modal-close:hover {
    color: #000;
}

.ai-chat-modal-body {
    padding: 20px;
    text-align: center;
}

.ai-chat-modal-body img {
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 15px;
}

.ai-chat-modal-body p {
    margin: 0;
    color: #666;
    font-size: 14px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 確保聊天小工具在正確位置 */
.ai-chat-widget.bottom-right {
    bottom: var(--chat-bottom-distance, 20px) !important;
    right: 20px !important;
    position: fixed !important;
}

.ai-chat-widget.top-right {
    top: var(--chat-top-distance, 20px) !important;
    right: 20px !important;
    position: fixed !important;
}

.ai-chat-widget.top-left {
    top: var(--chat-top-distance, 20px) !important;
    left: 20px !important;
    position: fixed !important;
}

/* 確保在所有設備上都正確顯示 */
@media screen and (max-width: 768px) {
    .ai-chat-widget.bottom-right {
        bottom: 20px !important;
        right: 15px !important;
        position: fixed !important;
    }

    .ai-chat-widget.top-right {
        top: 20px !important;
        right: 15px !important;
        position: fixed !important;
    }

    .ai-chat-widget.top-left {
        top: 20px !important;
        left: 15px !important;
        position: fixed !important;
    }
}