* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.chat-container {
    width: 90%;
    max-width: 800px;
    height: 90vh;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    text-align: center;
}

.chat-header h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.chat-header p {
    font-size: 14px;
    opacity: 0.9;
}

.ai-badge {
    background: rgba(255,255,255,0.2);
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    margin-top: 8px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f5f5f5;
}

.message {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
}

.message.user {
    justify-content: flex-end;
}

.message-content {
    max-width: 100%;
    padding: 10px 15px;
    border-radius: 18px;
    
}

.message.user .message-content {
    background: #667eea;
    color: white;
}

.message.bot .message-content {
    background: white;
    color: #333;
    border: 1px solid #e0e0e0;
}

.message-time {
    font-size: 11px;
    margin-top: 5px;
    opacity: 0.7;
}

.chat-input {
    padding: 20px;
    background: white;
    border-top: 1px solid #e0e0e0;
    display: flex;
    gap: 10px;
}

.chat-input input {
    flex: 1;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 25px;
    outline: none;
    font-size: 14px;
}

.chat-input input:focus {
    border-color: #667eea;
}

.chat-input button {
    padding: 12px 24px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.chat-input button:hover {
    background: #5a67d8;
}

.clear-btn {
    background: #e53e3e !important;
}

.clear-btn:hover {
    background: #c53030 !important;
}

.typing {
    display: inline-block;
    padding: 10px 15px;
    background: white;
    border-radius: 18px;
    border: 1px solid #e0e0e0;
}

.typing span {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #999;
    margin: 0 2px;
    animation: typing 1.4s infinite;
}

.typing span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

.quick-buttons {
    padding: 10px 20px;
    background: white;
    border-top: 1px solid #e0e0e0;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.quick-btn {
    padding: 8px 15px;
    background: #f0f0f0;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.3s;
}

.quick-btn:hover {
    background: #e0e0e0;
}

.model-info {
    font-size: 10px;
    text-align: center;
    padding: 5px;
    background: #f0f0f0;
    color: #666;
}