html {
    box-sizing: border-box;
}

*, *:before, *:after {
    box-sizing: inherit;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; /* Modern font stack */
    margin: 0;
    padding: 0;
    background-color: #F8F9FA; /* Lighter, cleaner background */
    color: #343A40; /* Darker gray for better contrast */
    line-height: 1.6;
}

h1 {
    width: 100%;
    text-align: center;
    margin-top: 20px; /* Add some space at the top */
    margin-bottom: 30px; /* Increased bottom margin */
    color: #0056b3; /* Slightly more muted blue */
    font-size: 2em; /* Adjust size as needed */
}

.container {
    display: flex;
    padding: 0 20px 20px 20px; /* Add padding to the sides and bottom of container */
}

.left-column {
    width: 30%;
    padding: 20px;
    background-color: #FFFFFF;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05); /* Softer shadow */
    border-radius: 8px; /* Rounded corners */
    margin-right: 20px; /* Space between columns */
    display: flex;
    flex-direction: column;
    align-items: center; 
}

.right-column {
    width: 70%;
    padding: 20px;
    background-color: #FFFFFF;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05); /* Softer shadow */
    border-radius: 8px; /* Rounded corners */
    overflow-y: auto;
}

p.warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
}

button {
    background-color: #007BFF; /* Standard professional blue */
    color: white;
    border: none;
    padding: 12px 24px; /* Increased padding */
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    font-weight: 500; /* Slightly bolder text */
    margin: 10px 2px;
    cursor: pointer;
    border-radius: 6px; /* Slightly more rounded */
    transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out; /* Smooth transitions */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); /* Subtle shadow for depth */
}

button:hover {
    background-color: #0056b3; /* Darker blue on hover */
    transform: translateY(-2px); /* Slight lift effect */
    box-shadow: 0 4px 8px rgba(0,0,0,0.15); /* Enhanced shadow on hover */
}

button:active {
    transform: translateY(0px); /* Button press effect */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#startSessionBtn {
    transition: background 0.3s, color 0.3s;
}

#startSessionBtn:not(.audio-active):hover {
    background-color: #0056b3; /* Ensure hover for non-active state is standard */
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

#startSessionBtn.audio-active {
    background-color: #28A745; /* Professional green */
    color: #fff;
    animation: pulse 1.5s infinite; /* Keep existing pulse */
    border: none;
}

#startSessionBtn.audio-active:hover {
    background-color: #1E7E34; /* Darker green for hover on active */
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

#closeSessionBtn {
    display: none; 
    background-color: #DC3545; /* Professional red */
}

#closeSessionBtn:hover {
    background-color: #C82333; /* Darker red on hover */
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

#logContainerSystem {
    width: 100%;
    margin-top: 20px;
    font-size: 0.9em;
    color: #6C757D; /* Muted color for system logs */
}

#logContainerSystem p {
    margin: 3px 0;
    padding: 5px;
    background-color: #F8F9FA;
    border-left: 3px solid #6C757D;
    border-radius: 3px;
    word-break: break-all;
}

#logContainer {
    background-color: #F8F9FA; /* Consistent light background */
    padding: 15px;
    border-radius: 6px;
    height: calc(100vh - 180px); /* Adjust height considering h1 and container padding */
    overflow-y: auto;
}

#logContainer p.message { /* Target paragraphs with class 'message' inside logContainer */
    margin: 8px 0; /* Increased margin for better separation */
    padding: 10px 12px; /* Adjusted padding */
    background-color: #FFFFFF; /* White background for messages */
    border-left-width: 4px; /* Thicker border */
    border-left-style: solid;
    border-radius: 4px;
    line-height: 1.5;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05); /* Subtle shadow for each message */
}

.User-message {
    text-align: right;
    color: #005A9C; 
    border-left-color: #005A9C !important; /* Use !important if needed to override general #logContainer p */
}

.Voice-Agent-message {
    text-align: left;
    color: #4A4A4A; 
    border-left-color: #4A4A4A !important; /* Use !important if needed to override general #logContainer p */
}

.Voice-Agent-message a {
    color: #0056b3; /* Link color consistent with h1 */
    text-decoration: underline;
}

.Voice-Agent-message a:hover {
    color: #003d80; /* Darker blue on hover */
    text-decoration: none;
}

#audioElement {
    display: block;
    margin-top: 10px;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7); /* Adjusted pulse color to match active green */
  }
  70% {
    box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
  }
}

#audioStatus {
  display: none;
  margin-left: 10px;
  color: #4caf50;
  font-weight: bold;
}

#logContainer p:not(.message) { /* Style for any other paragraphs in logContainer if any */
    background-color: transparent;
    border-left: none;
    padding: 2px 0;
}