/* General Body and Main Layout */
:root {
    --bg-color-dark: #282c34;
    --text-color-dark: #abb2bf;
    --card-bg-dark: #3a3f4a;
    --border-color-dark: #4f5666;

    --bg-color-light: #fefefe;
    --text-color-light: #333;
    --card-bg-light: #ffffff;
    --border-color-light: #ddd;

    --primary-color: #61afef; /* Blue */
    --accent-color: #c678dd;  /* Purple */
    --success-color: #98c379; /* Green */
    --info-color: #56b6c2;    /* Cyan */
    --warning-color: #e5c07b; /* Yellow */
    --danger-color: #e06c75;  /* Red */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Dark Theme (Default) */
body.dark-theme {
    background-color: var(--bg-color-dark);
    color: var(--text-color-dark);
}

body.dark-theme .webcam-functions-box,
body.dark-theme .popup-content {
    background-color: var(--card-bg-dark);
    border: 1px solid var(--border-color-dark);
}

body.dark-theme input,
body.dark-theme textarea {
    background-color: #444b56;
    color: var(--text-color-dark);
    border: 1px solid var(--border-color-dark);
}

body.dark-theme .chat-message.self {
    background-color: var(--primary-color);
    color: white;
}
body.dark-theme .chat-message.other {
    background-color: #5a606b;
}


/* Light Theme */
body.light-theme {
    background-color: var(--bg-color-light);
    color: var(--text-color-light);
}

body.light-theme .webcam-functions-box,
body.light-theme .popup-content {
    background-color: var(--card-bg-light);
    border: 1px solid var(--border-color-light);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

body.light-theme input,
body.light-theme textarea {
    background-color: var(--card-bg-light);
    color: var(--text-color-light);
    border: 1px solid var(--border-color-light);
}

body.light-theme .chat-message.self {
    background-color: var(--primary-color);
    color: white;
}
body.light-theme .chat-message.other {
    background-color: #e0e0e0;
}


header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color-dark); /* Use dark border by default, theme will adjust */
}
body.light-theme header {
    border-bottom: 1px solid var(--border-color-light);
}

header h1 {
    margin: 0;
    font-size: 2em;
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

.webcam-functions-box {
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 1200px;
    text-align: center;
    box-sizing: border-box;
}

.webcam-functions-box h2 {
    margin-top: 0;
    margin-bottom: 30px;
    color: var(--primary-color);
    font-size: 2.2em;
}

/* Video Streams Layout */
.video-streams {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

.video-container {
    background-color: rgba(0, 0, 0, 0.3); /* Dark overlay for video area */
    border-radius: 8px;
    padding: 15px;
    flex: 1;
    min-width: 300px; /* Minimum width for video container */
    max-width: 580px;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.video-container h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--info-color);
    font-size: 1.4em;
}

video {
    width: 100%;
    max-width: 560px; /* Max width for actual video element */
    height: auto;
    background-color: black;
    border-radius: 6px;
    border: 2px solid var(--border-color-dark); /* Default dark border */
    transition: border-color 0.3s;
}
body.light-theme video {
    border: 2px solid var(--border-color-light);
}


.video-controls {
    margin-top: 15px;
}

/* Controls Grid */
.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

/* Animated Buttons */
.animated-btn {
    padding: 12px 20px;
    font-size: 1.1em;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    color: white; /* Default text color for all buttons */
}

.animated-btn .icon {
    font-size: 1.2em;
}

/* Button Colors */
.animated-btn.primary-btn { background-color: var(--primary-color); }
.animated-btn.success-btn { background-color: var(--success-color); }
.animated-btn.info-btn    { background-color: var(--info-color); }
.animated-btn.warning-btn { background-color: var(--warning-color); }
.animated-btn.danger-btn  { background-color: var(--danger-color); }
.animated-btn.accent-btn  { background-color: var(--accent-color); }

/* Default for buttons without specific color class (like theme toggle) */
.animated-btn:not([class*="-btn"]) {
    background-color: var(--border-color-dark); /* Neutral button color */
}
body.light-theme .animated-btn:not([class*="-btn"]) {
    background-color: var(--border-color-light);
    color: var(--text-color-dark);
}


.animated-btn:hover:not(:disabled) {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

.animated-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    filter: brightness(0.9);
}

.animated-btn:disabled {
    background-color: #555;
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
    transform: none;
}

.file-input-label { /* Style for the label acting as a button */
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Status Messages */
.status-message {
    margin-top: 25px;
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 0.95em;
    font-style: italic;
    background-color: rgba(var(--primary-color-rgb, 97, 175, 239), 0.1); /* Subtle background */
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    text-align: left;
    white-space: pre-wrap; /* Preserve whitespace for better logging */
}
body.dark-theme .status-message {
    background-color: rgba(97, 175, 239, 0.1);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}
body.light-theme .status-message {
    background-color: rgba(97, 175, 239, 0.05); /* Lighter for light theme */
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}


/* Chat Popup */
.popup {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1000; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.6); /* Black w/ opacity */
    justify-content: center;
    align-items: center;
}

.popup-content {
    margin: auto;
    padding: 30px;
    border-radius: 10px;
    position: relative;
    width: 80%;
    max-width: 500px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.popup-content h2 {
    margin-top: 0;
    color: var(--accent-color); /* Purple for chat header */
    font-size: 1.8em;
}

.popup-content .close-btn {
    color: var(--text-color-dark);
    position: absolute;
    top: 15px;
    right: 25px;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}
body.light-theme .popup-content .close-btn {
    color: var(--text-color-light);
}
.popup-content .close-btn:hover,
.popup-content .close-btn:focus {
    color: var(--danger-color);
    text-decoration: none;
}

#chatMessages {
    flex-grow: 1;
    height: 300px; /* Fixed height for chat display */
    overflow-y: auto;
    border: 1px solid var(--border-color-dark);
    border-radius: 5px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}
body.light-theme #chatMessages {
    border: 1px solid var(--border-color-light);
}

.chat-message {
    padding: 8px 12px;
    border-radius: 15px;
    max-width: 80%;
    word-wrap: break-word;
}

.chat-message.self {
    align-self: flex-end;
    border-bottom-right-radius: 3px;
}

.chat-message.other {
    align-self: flex-start;
    color: var(--text-color-dark);
    border-bottom-left-radius: 3px;
}
body.dark-theme .chat-message.other {
    color: var(--text-color-dark);
}
body.light-theme .chat-message.other {
    color: var(--text-color-light);
}


#chatInput {
    width: calc(100% - 20px);
    padding: 10px;
    border-radius: 5px;
    font-size: 1em;
    box-sizing: border-box;
}

#sendChat {
    width: 100%;
}

/* Responsive Adjustments */
@media (max-width: 900px) {
    .video-streams {
        flex-direction: column;
        align-items: center;
    }
    .video-container {
        max-width: 100%;
    }
    .controls-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    header h1 {
        font-size: 1.5em;
    }
    .webcam-functions-box {
        padding: 15px;
    }
    .webcam-functions-box h2 {
        font-size: 1.8em;
    }
    .animated-btn {
        font-size: 0.9em;
        padding: 10px 15px;
    }
    .popup-content {
        width: 95%;
        padding: 20px;
    }
}