chat.css

body {
    margin: 0;
    padding: 0;
    height: 100vh;
    min-height: 600px;
    min-width: 400px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #ffffff;
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100%;
    max-width: none;
    margin: 0;
    background: #fff;
}

.chat-header {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
    background: #f8f9fa;
}

.back-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: 5px 10px;
    margin-right: 10px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.message {
    display: flex;
    margin-bottom: 1rem;
    gap: 1rem;
}

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

.message-content {
    max-width: 70%;
    padding: 0.8rem 1rem;
    border-radius: 1rem;
    font-size: 14px;
    line-height: 1.5;
}

.user .message-content {
    background: #2196f3;
    color: white;
    border-top-right-radius: 4px;
}

.assistant .message-content {
    background: #f0f2f5;
    color: #000;
    border-top-left-radius: 4px;
}

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

.chat-input {
    flex: 1;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    resize: none;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.5;
    max-height: 200px;
    overflow-y: auto;
}

.chat-input:focus {
    outline: none;
    border-color: #2196f3;
}

.send-btn {
    width: 40px;
    height: 40px;
    border-radius: 20px;
    border: none;
    background: #2196f3;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.send-btn:hover {
    background: #1976d2;
}

.send-icon {
    font-size: 18px;
}

/* Loading indicator */
.typing-indicator {
    padding: 0.5rem 1rem;
    background: #f0f2f5;
    border-radius: 1rem;
    display: inline-block;
}

.typing-indicator span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #90a4ae;
    border-radius: 50%;
    margin-right: 5px;
    animation: typing 1s infinite;
}

@keyframes typing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}