* {
    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;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 900px;
    width: 100%;
}

.character-section {
    text-align: center;
    margin-bottom: 30px;
}

.character-avatar {
    display: inline-block;
    margin-bottom: 20px;
}

/* Cute Robot Character */
.robot-head {
    width: 120px;
    height: 120px;
    background: linear-gradient(145deg, #4facfe 0%, #00f2fe 100%);
    border-radius: 20px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.antenna {
    width: 4px;
    height: 20px;
    background: #333;
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
}

.antenna::after {
    content: '';
    width: 12px;
    height: 12px;
    background: #ff6b6b;
    border-radius: 50%;
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 90%, 100% { opacity: 1; }
    95% { opacity: 0.3; }
}

.eyes {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding-top: 35px;
}

.eye {
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    position: relative;
}

.eye::after {
    content: '';
    width: 8px;
    height: 8px;
    background: #333;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: look 4s ease-in-out infinite;
}

@keyframes look {
    0%, 100% { transform: translate(-50%, -50%); }
    25% { transform: translate(-30%, -50%); }
    75% { transform: translate(-70%, -50%); }
}

.mouth {
    width: 40px;
    height: 20px;
    border: 3px solid white;
    border-top: none;
    border-radius: 0 0 40px 40px;
    margin: 15px auto 0;
}

h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.tagline {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

/* Chat Container */
.chat-container {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: 20px;
    background: #f9fafb;
}

.message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    animation: slideIn 0.3s ease-out;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.bot-message .message-avatar {
    background: linear-gradient(145deg, #4facfe 0%, #00f2fe 100%);
}

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

.user-message .message-avatar {
    background: linear-gradient(145deg, #667eea 0%, #764ba2 100%);
}

.message-content {
    background: white;
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 70%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.user-message .message-content {
    background: linear-gradient(145deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.message-content p {
    margin: 0;
    line-height: 1.5;
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: #667eea;
    border-radius: 50%;
    animation: typing 1.4s ease-in-out infinite;
}

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

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

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

.chat-input-container {
    display: flex;
    padding: 20px;
    background: white;
    border-top: 1px solid #e5e7eb;
}

#messageInput {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

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

#sendButton {
    width: 50px;
    height: 50px;
    margin-left: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

#sendButton:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

#sendButton:active {
    transform: scale(0.95);
}

.footer {
    text-align: center;
    margin-top: 20px;
    color: white;
    font-size: 0.9rem;
}

.footer a {
    color: white;
    text-decoration: underline;
}

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

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .chat-messages {
        height: 300px;
    }
    
    .message-content {
        max-width: 85%;
    }
}