/* V4 CSS - Different class names, colors, and structure */
body {
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    color: #FFFFFF;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.video-bg-container-v4 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -50;
    overflow: hidden;
}

#bg-media-v4 {
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    filter: brightness(0.55);
}

.page-layout-v4 {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 25px;
    position: relative;
    z-index: 5;
}

.content-wrapper-v4 {
    width: 100%;
    max-width: 550px;
    text-align: center;
    margin-top: 45px;
}

.layout-row-v4 {
    margin-bottom: 25px;
}

.main-graphic-v4 {
    max-width: 92%;
    height: auto;
}

.circular-photo-v4 {
    width: 145px;
    height: 145px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid #000;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.text-panel-v4 {
    background-color: rgba(30, 30, 30, 0.85);
    padding: 20px 25px;
    border-radius: 10px;
    font-size: 1.1em;
    line-height: 1.6;
    text-align: center;
}

#active-viewers-v4 {
    font-weight: bold;
    color: #FF69B4; /* HotPink */
}

#symbol-input-v4 {
    width: 100%;
    padding: 18px;
    border-radius: 5px;
    border: 2px solid #ccc;
    font-size: 1.05em;
    box-sizing: border-box;
    text-align: center;
}

#start-process-v4 {
    background-color: #00CED1; /* DarkTurquoise */
    color: #333;
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 1.25em;
    cursor: pointer;
    margin: 20px auto;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 206, 209, 0.6);
    animation: button-scale-v4 2.0s infinite alternate;
}

@keyframes button-scale-v4 {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.05);
    }
}

.popup-overlay-v4 {
    display: none;
    position: fixed;
    z-index: 1200;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
}

.popup-box-v4 {
    background-color: #f0f0f0;
    margin: 15% auto;
    padding: 30px;
    border-radius: 10px;
    width: 80%;
    max-width: 400px;
    color: #222;
    text-align: center;
}

.popup-heading-v4 {
    color: #00CED1;
    margin-bottom: 20px;
}

.popup-text-v4 {
    font-size: 1.1em;
    margin-bottom: 20px;
}

.progress-unit-v4 {
    text-align: left;
    margin-bottom: 15px;
}

.progress-unit-v4 p {
    margin: 0 0 5px 0;
    font-size: 0.9em;
}

.progress-shell-v4 {
    width: 100%;
    background-color: #ddd;
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill-A-v4, .progress-fill-B-v4, .progress-fill-C-v4 {
    height: 20px;
    width: 0;
    background-color: #32CD32; /* LimeGreen */
    border-radius: 5px;
    transition: width 0.5s ease-in-out;
}

.contact-button-v4 {
    display: block;
    background-color: #25D366;
    color: white;
    padding: 15px;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.1em;
    margin-top: 20px;
    transition: background-color 0.3s;
}

.contact-button-v4:hover {
    background-color: #1EAD54;
}