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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 20px;
}

header {
    grid-column: 1 / -1;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    color: #667eea;
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    font-size: 1.1em;
}

.chat-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 200px);
    min-height: 600px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    display: flex;
    margin-bottom: 15px;
    animation: fadeIn 0.3s ease-in;
}

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

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

.message.assistant {
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 15px 20px;
    border-radius: 18px;
    word-wrap: break-word;
    line-height: 1.5;
}

.message.user .message-content {
    background: #667eea;
    color: white;
    border-bottom-right-radius: 5px;
}

.message.assistant .message-content {
    background: #f0f0f0;
    color: #333;
    border-bottom-left-radius: 5px;
}

.message-content ul {
    margin: 10px 0;
    padding-left: 20px;
}

.message-content li {
    margin: 5px 0;
}

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

#messageInput {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

#messageInput:focus {
    border-color: #667eea;
}

#sendButton {
    padding: 15px 30px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

#sendButton:hover {
    background: #5568d3;
}

#sendButton:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.suggested-doctors {
    padding: 20px;
    border-top: 1px solid #eee;
    background: #f9f9f9;
}

.suggested-doctors h3 {
    margin-bottom: 15px;
    color: #667eea;
}

.doctor-card {
    background: white;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 10px;
    border-left: 4px solid #667eea;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.doctor-card h4 {
    color: #333;
    margin-bottom: 5px;
}

.doctor-card p {
    color: #666;
    font-size: 0.9em;
    margin: 3px 0;
}

.info-panel {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 20px;
    height: fit-content;
}

.info-section {
    margin-bottom: 20px;
}

.info-section h3 {
    color: #667eea;
    margin-bottom: 15px;
}

.info-section p {
    margin-bottom: 10px;
    color: #666;
}

#sessionId {
    font-family: monospace;
    font-size: 0.9em;
    color: #333;
}

#newSessionBtn {
    width: 100%;
    padding: 10px;
    background: #764ba2;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s;
}

#newSessionBtn:hover {
    background: #5d3a7a;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #5568d3;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .info-panel {
        order: -1;
    }
    
    .chat-container {
        height: calc(100vh - 300px);
    }
}