* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #111;
    color: #fff;
    font-family: Arial, sans-serif;
}

.container {
    width: 92%;
    max-width: 1400px;
    margin: 40px auto;
    text-align: center;
}

h1 {
    margin-bottom: 25px;
}

button,
a {
    padding: 12px 22px;
    margin: 8px;
    border: 0;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
}

button:disabled {
    opacity: 0.5;
    cursor: default;
}

input {
    width: 70%;
    max-width: 700px;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #555;
}

video {
    width: 100%;
    margin-top: 30px;
    background: #000;
    border-radius: 10px;
}

#preview {
    max-height: 75vh;
}

#remoteVideo {
    max-height: 85vh;
}

.hidden {
    display: none;
}