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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
    min-height: 100vh;
    padding: 20px;
}

.chat-container {
    background: white;
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 40px);
}

.chat-header {
    background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
    color: white;
    padding: 20px;
    border-radius: 20px 20px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h1 {
    font-size: 1.3em;
}

.back-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.9em;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    background: #f5f5f5;
}

.message {
    background: white;
    padding: 12px;
    border-radius: 15px;
    margin-bottom: 12px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    color: #4caf50;
    font-weight: 600;
    font-size: 0.9em;
}

.message-content {
    color: #333;
    line-height: 1.6;
    font-size: 0.95em;
}

.chat-input-area {
    padding: 15px;
    background: white;
    border-radius: 0 0 20px 20px;
    display: flex;
    gap: 10px;
}

.chat-input {
    flex: 1;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 1em;
}

.send-btn {
    background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
}

.info-box {
    background: #c8e6c9;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 15px;
    color: #2e7d32;
    font-size: 0.9em;
}