/* AI Development Platform Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

#app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

main {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

#auth-section, #ai-chat {
    text-align: center;
}

button {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

button:hover {
    background: #5a6fd8;
}

#chat-messages {
    height: 400px;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    margin: 20px 0;
    overflow-y: auto;
    text-align: left;
}

#chat-input {
    width: 70%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-right: 10px;
}