:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --dark-gray: #777;
    --white: #fff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-gray);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 20px 0;
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.call-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 30px;
}

.btn-call {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: none;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    margin-bottom: 15px;
}

.btn-call:hover {
    background-color: var(--secondary-color);
    transform: scale(1.05);
}

.btn-call:active {
    transform: scale(0.95);
}

.btn-icon {
    font-size: 36px;
    margin-bottom: 5px;
}

.btn-text {
    font-size: 18px;
    font-weight: bold;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: bold;
    margin: 5px;
}

.btn-secondary {
    background-color: var(--light-gray);
    color: var(--text-color);
    border: 1px solid var(--dark-gray);
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: bold;
    margin: 5px;
}

.btn-primary:hover, .btn-secondary:hover {
    opacity: 0.9;
}

.status-indicator {
    display: flex;
    align-items: center;
    margin-top: 10px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #2ecc71;
    margin-right: 8px;
}

.status-indicator.listening .status-dot {
    background-color: var(--accent-color);
    animation: pulse 1.5s infinite;
}

.status-indicator.processing .status-dot {
    background-color: var(--primary-color);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.conversation-container {
    width: 100%;
    max-width: 600px;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 20px;
    margin-top: 20px;
    transition: var(--transition);
}

.conversation-log {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 20px;
}

.message {
    margin-bottom: 15px;
    padding: 10px 15px;
    border-radius: 8px;
    max-width: 80%;
}

.user-message {
    background-color: var(--primary-color);
    color: var(--white);
    align-self: flex-end;
    margin-left: auto;
}

.bot-message {
    background-color: var(--light-gray);
    color: var(--text-color);
    align-self: flex-start;
}

.session-summary {
    background-color: var(--light-gray);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}

.session-summary h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

footer {
    text-align: center;
    padding: 20px 0;
    color: var(--dark-gray);
    font-size: 14px;
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow);
}

.modal h2 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.modal ul {
    margin: 15px 0;
    padding-left: 20px;
}

.modal p {
    margin-bottom: 15px;
}

/* Utility classes */
.hidden {
    display: none;
}

/* Responsive styles */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .conversation-container {
        padding: 15px;
    }
    
    .btn-call {
        width: 100px;
        height: 100px;
    }
    
    .btn-icon {
        font-size: 30px;
    }
}