body {
            font-family: Arial, sans-serif;
            background-color: #2c2c2c;
            color: white;
            margin: 0;
            display: flex;
            flex-direction: column;
            height: 100vh;
        }

        /* Header Styling */
        header {
            background-color: #333;
            padding: 5px 0;  /* Reduced height */
            text-align: right;
            margin-right: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        header .company-info {
            display: flex;
            align-items: center;
            margin-left: 20px;
        }

        header .company-info img {
            width: 30px;
            height: 30px;
            margin-right: 10px;
        }

        header .company-info h1 {
            font-size: 1.2em;
            color: white;
            margin: 0;
        }

        header nav a {
            color: white;
            margin: 0 15px;
            text-decoration: none;
            font-weight: bold;
        }
        header nav a:hover {
            text-decoration: underline;
        }

        /* Sidebar Styling */
        .sidebar {
            width: 250px;
            background-color: #1c1c1c;
            border-right: 2px solid #333;
            display: flex;
            margin-top: -90px;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.5);
        }
        .sidebar h3 {
            font-size: 1.2em;
            color: #aaa;
            margin-bottom: 20px;
            text-align: center;
        }
        .user-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .user-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px;
            margin-bottom: 10px;
            background-color: #333;
            border-radius: 8px;
            box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.3);
            transition: background-color 0.3s ease;
        }
        .user-list li:hover {
            background-color: #555;
        }
        .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .status-indicator {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }
        .status-indicator.online {
            background-color: #4caf50;
        }
        .status-indicator.offline {
            background-color: #e63946;
        }
        .call-action {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 5px 10px;
            background-color: #4caf50;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.8em;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }
        .call-action:hover {
            background-color: #66bb6a;
            transform: scale(1.1);
        }
        .call-icon {
            font-size: 1.2em;
        }

        /* Flexbox layout for main content area */
        .main-container {
            display: flex;
            flex: 1;
            justify-content: space-between;
            margin-top: 25mm; /* Adjust for header margin */
        }

        /* Video Container Styling */
        .video-container {
            width: calc(100% - 250px); /* Remaining width after sidebar */
            height: 550px;
            background-color: #000;
            border-radius: 10px;
            margin-top: -90px;
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: white;
        }

        .self-video {
            width: 120px;
            height: 90px;
            background-color: #333;
            border-radius: 10px;
            position: absolute;
            bottom: 10px;
            right: 10px;
            box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            color: #aaa;
            font-size: 0.8em;
        }
        .call-info {
            position: absolute;
            top: 10px;
            text-align: center;
        }
        .user-name {
            font-size: 1.5em;
            font-weight: bold;
        }
        .call-timer {
            font-size: 1.2em;
            margin-top: 5px;
        }

        /* Actions section: Positioned at bottom center inside video container */
        .actions-container {
            position: absolute;
            bottom: 20px;
            display: flex;
            justify-content: center;
            gap: 15px;
            z-index: 10;
        }
        .action-button {
            width: 100px;
            height: 40px;
            background-color: #333;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.9em;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }
        .action-button:hover {
            background-color: #555;
            transform: scale(1.05);
        }
        .disconnect-button {
            background-color: #e63946;
        }
        .disconnect-button:hover {
            background-color: #ff5252;
        }
        .icon {
            font-size: 1.2em;
        }