/* General Styles */
body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    padding: 20px 0;
}

.container {
    max-width: 600px;
    margin-top: 50px;
}

/* Log Container */
.log-container {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.log-container h3 {
    color: #667eea;
    margin-bottom: 20px;
    font-weight: 600;
}

#log {
    flex: 1;
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
    max-height: 300px;
    overflow-y: auto;
    text-align: left;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

#log p {
    margin: 5px 0;
    color: #495057;
}

/* Button Container */
.btn-container {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

/* Circular Buttons */
.btn-circle {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-circle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-circle i {
    margin: 0;
}

/* Number Pad */
.number-pad {
    margin: 20px 0;
}

.number-pad .row {
    margin-bottom: 10px;
}

.btn-number-pad {
    width: 100%;
    height: 60px;
    font-size: 24px;
    font-weight: 600;
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: all 0.2s ease;
}

.btn-number-pad:hover {
    background: #667eea !important;
    color: white;
    border-color: #667eea;
    transform: scale(1.05);
}

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

/* Phone Number Input */
#phoneNumber {
    font-size: 20px;
    font-weight: 500;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 15px;
}

#phoneNumber:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Modal Customization */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    border-bottom: none;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-footer {
    border-top: none;
    padding: 20px;
}

/* User Image */
.rounded-circle {
    border: 4px solid #667eea;
    padding: 10px;
    background: white;
}

/* Call Timer */
.call-timer {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    margin: 10px 0;
}

.call-timer h5 {
    margin: 0;
    color: #495057;
}

/* Responsive Design */
@media (max-width: 576px) {
    .container {
        margin-top: 20px;
    }
    
    .log-container {
        padding: 20px;
    }
    
    .btn-circle {
        width: 60px;
        height: 60px;
        font-size: 20px;
    }
    
    .btn-number-pad {
        height: 50px;
        font-size: 20px;
    }
}