body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    overflow: hidden; /* Prevents scrollbars */
    font-family: Arial, sans-serif;
    background-color: #2c2c2c;
}

#call-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-container {
    width: 100%;
    height: 100%;
    position: relative;
}

/* --- VIDEO STYLES (THE CORE CHANGE) --- */

/* Remote video (the big one) */
#remote-video {
    width: 100%;
    height: 100%;
    /* This is the magic change! */
    /* 'contain' fits the whole video without cropping, adding black bars if needed. */
    object-fit: contain;
    position: absolute;
    top: 0;
    left: 0;
}

/* Local video (the small picture-in-picture) */
#local-video {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 25%; /* Responsive width */
    max-width: 200px; /* Maximum size on large screens */
    min-width: 100px; /* Minimum size on small screens */
    height: auto;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    z-index: 10;
    transform: scaleX(-1); /* Mirror effect for self-view */
}

/* --- CONTROLS AND TEXT STYLES --- */

/* Container for text/buttons before the call starts */
#initial-controls {
    color: white;
    text-align: center;
    z-index: 20; /* Make sure it appears above the black background */
}

#initial-controls h1, #initial-controls p {
    background-color: rgba(0,0,0,0.5);
    padding: 5px 15px;
    border-radius: 10px;
}

/* Container for the End Call button during a call */
#call-in-progress-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
}

button {
    padding: 15px 30px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 18px;
    margin: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0056b3;
}

#end-call-btn {
    background-color: #e62e4d;
}
#end-call-btn:hover {
    background-color: #c82333;
}

.hidden {
    display: none !important;
}

/* Login page specific styles */
#login-container {
    background-color: #3e3e3e;
    padding: 40px;
    border-radius: 10px;
    color: white;
    text-align: center;
}
input {
    width: calc(100% - 20px);
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid #555;
    border-radius: 5px;
    background-color: #505050;
    color: white;
}
#error-message {
    color: #ff6b6b;
    margin-top: 15px;
}