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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #292F4C;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.chat-container {
    width: 100%;
    max-width: 800px;
    height: 90vh;
    max-height: 700px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(41, 47, 76, 0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    background: #292F4C;
    color: #FFFFFF;
    padding: 20px 24px;
    border-radius: 16px 16px 0 0;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.header-text h1 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 4px;
    color: #FFFFFF;
}

.header-subtitle {
    font-size: 14px;
    opacity: 0.9;
    color: #FFFFFF;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    background: #f8f9fa;
}

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

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bot-avatar {
    background: #292F4C;
    color: #FFFFFF;
}

.user-avatar {
    background: #e9ecef;
    color: #495057;
}

.message-content {
    flex: 1;
    background: white;
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    line-height: 1.6;
}

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

.user-message .message-content {
    background: #292F4C;
    color: #FFFFFF;
}

.message-content p {
    margin-bottom: 12px;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul,
.message-content ol {
    margin-left: 20px;
    margin-bottom: 12px;
}

.message-content ul:last-child,
.message-content ol:last-child {
    margin-bottom: 0;
}

.message-content li {
    margin-bottom: 6px;
}

.message-content strong {
    font-weight: 600;
}

.chat-input-container {
    padding: 20px 24px;
    background: white;
    border-top: 1px solid #e9ecef;
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px 0;
    align-items: center;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: #292F4C;
    border-radius: 50%;
    animation: typing 1.4s 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);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

.chat-input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

#messageInput {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    transition: border-color 0.2s;
}

#messageInput:focus {
    outline: none;
    border-color: #292F4C;
}

.send-button {
    width: 48px;
    height: 48px;
    background: #292F4C;
    color: #FFFFFF;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
}

.send-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(41, 47, 76, 0.4);
}

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

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .chat-container {
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }

    .chat-header {
        border-radius: 0;
        padding: 16px 20px;
    }

    .header-text h1 {
        font-size: 18px;
    }

    .header-subtitle {
        font-size: 13px;
    }

    .chat-messages {
        padding: 16px;
    }

    .chat-input-container {
        padding: 16px 20px;
    }
}

/* Error message styling */
.error-message {
    background: #fee;
    color: #c33;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    border-left: 4px solid #c33;
}