/* 客服系统前端样式 */

.css-chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.css-chat-header {
    background: #2196f3;
    color: white;
    padding: 15px 20px;
    border-radius: 10px 10px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: move;
    min-width: 300px;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.css-chat-title {
    font-weight: 500;
    font-size: 16px;
}

.css-chat-controls button {
    background: none;
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    padding: 0 5px;
    margin-left: 10px;
    transition: opacity 0.2s ease;
}

.css-chat-controls button:hover {
    opacity: 0.8;
}

.css-chat-body {
    background: white;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 10px 10px;
    width: 350px;
    height: 400px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.css-chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
}

.css-welcome-message {
    text-align: center;
    color: #666;
    margin-bottom: 20px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    border: 1px solid #e9ecef;
}

.css-welcome-message p {
    margin: 5px 0;
    font-size: 14px;
}

.css-message {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    animation: fadeInUp 0.3s ease;
}

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

.css-message.user {
    align-items: flex-end;
}

.css-message.agent {
    align-items: flex-start;
}

.css-message-bubble {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    word-wrap: break-word;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.css-message.user .css-message-bubble {
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
    color: white;
}

.css-message.agent .css-message-bubble {
    background: white;
    border: 1px solid #e9ecef;
    color: #333;
}

.css-message-time {
    font-size: 11px;
    color: #999;
    margin-top: 5px;
    opacity: 0.8;
}

.css-message.user .css-message-time {
    text-align: right;
}

.css-message.agent .css-message-time {
    text-align: left;
}

.css-chat-input-container {
    padding: 15px;
    border-top: 1px solid #eee;
    background: white;
    border-radius: 0 0 10px 10px;
}

.css-chat-form {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.css-message-input {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 20px;
    resize: none;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.4;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.css-message-input:focus {
    outline: none;
    border-color: #2196f3;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.css-send-btn {
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    white-space: nowrap;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.3);
}

.css-send-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.4);
}

.css-send-btn:active {
    transform: translateY(0);
}

.css-chat-toggle {
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
    color: white;
    padding: 15px 20px;
    border-radius: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
    }
    50% {
        box-shadow: 0 6px 25px rgba(33, 150, 243, 0.5);
    }
    100% {
        box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
    }
}

.css-chat-toggle:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.4);
}

.css-chat-icon {
    font-size: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-5px);
    }
    60% {
        transform: translateY(-3px);
    }
}

.css-chat-text {
    font-weight: 500;
    font-size: 14px;
}

.css-chat-widget.minimized .css-chat-body {
    display: none;
}

.css-chat-widget.hidden .css-chat-header,
.css-chat-widget.hidden .css-chat-body {
    display: none;
}

.css-typing-indicator {
    padding: 10px 15px;
    color: #666;
    font-style: italic;
    font-size: 12px;
    background: white;
    border-radius: 15px;
    border: 1px solid #e9ecef;
    margin: 10px 0;
    animation: typing 1.5s infinite;
}

@keyframes typing {
    0%, 50% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0.5;
    }
}

/* 消息状态指示器 */
.css-message-status {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-left: 5px;
}

.css-message-status.unread {
    background: #e74c3c;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0.3;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .css-chat-widget {
        bottom: 10px;
        right: 10px;
        left: 10px;
    }
    
    .css-chat-body {
        width: 100%;
        height: 350px;
    }
    
    .css-chat-header {
        min-width: auto;
    }
    
    .css-chat-toggle {
        padding: 12px 16px;
        font-size: 12px;
    }
    
    .css-chat-icon {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .css-chat-body {
        height: 300px;
    }
    
    .css-chat-messages {
        padding: 15px;
    }
    
    .css-chat-input-container {
        padding: 12px;
    }
    
    .css-message-bubble {
        max-width: 90%;
        padding: 10px 14px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .css-chat-body {
        background: #1a1a1a;
        border-color: #333;
    }
    
    .css-chat-messages {
        background: #1a1a1a;
    }
    
    .css-message.agent .css-message-bubble {
        background: #2d2d2d;
        border-color: #444;
        color: #e0e0e0;
    }
    
    .css-welcome-message {
        background: #2d2d2d;
        border-color: #444;
        color: #e0e0e0;
    }
    
    .css-chat-input-container {
        background: #1a1a1a;
        border-color: #333;
    }
    
    .css-message-input {
        background: #2d2d2d;
        border-color: #444;
        color: #e0e0e0;
    }
    
    .css-typing-indicator {
        background: #2d2d2d;
        border-color: #444;
        color: #e0e0e0;
    }
}

/* 无障碍支持 */
.css-chat-widget:focus-within {
    outline: 2px solid #2196f3;
    outline-offset: 2px;
}

.css-chat-controls button:focus,
.css-send-btn:focus,
.css-message-input:focus {
    outline: 2px solid #2196f3;
    outline-offset: 2px;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .css-chat-header {
        border: 2px solid #000;
    }
    
    .css-chat-body {
        border: 2px solid #000;
    }
    
    .css-message-bubble {
        border: 2px solid #000;
    }
}