:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --primary-color: #3b82f6;
    --danger-color: #ef4444;
    --text-color: #e0e0e0;
    --control-bg: rgba(30, 30, 30, 0.9);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    overflow: hidden; /* Prevent scrollbar */
    height: 100vh;
    width: 100vw;
}

#app-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Main Video Grid */
#video-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
    padding: 16px;
    align-content: center;
    justify-content: center;
}

/* Status Overlay */
.status-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.status-content {
    text-align: center;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Peer Card */
.peer-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 16 / 9;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

.peer-card img, .peer-card video, .peer-card canvas {
    width: 100%;
    height: 100%;
    object-fit: contain; /* or cover if preferred */
    background: black;
}

.peer-info {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(0, 0, 0, 0.6);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 6px;
}

.peer-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #aaa;
}

.peer-status.speaking {
    background-color: #4ade80;
    box-shadow: 0 0 8px #4ade80;
}

/* Local Preview (PIP) */
#local-preview {
    position: absolute;
    bottom: 80px;
    right: 20px;
    width: 240px;
    aspect-ratio: 16 / 9;
    background: black;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.6);
    overflow: hidden;
    border: 2px solid #333;
    z-index: 50;
    transition: width 0.3s;
}

#local-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1); /* Mirror local video */
}

.local-label {
    position: absolute;
    bottom: 6px;
    left: 8px;
    font-size: 0.7em;
    background: rgba(0,0,0,0.5);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Control Bar */
#control-bar {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--control-bg);
    padding: 10px 20px;
    border-radius: 50px;
    display: flex;
    gap: 16px;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    z-index: 60;
    backdrop-filter: blur(10px);
}

.control-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background-color: #333;
    color: white;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s;
}

.control-btn:hover {
    background-color: #444;
    transform: scale(1.05);
}

.control-btn.active {
    background-color: var(--primary-color);
}

.control-btn.danger {
    background-color: var(--danger-color);
}

.material-icons {
    font-size: 24px;
}

#toggle-mic.active .material-icons {
    /* mic icon when active */
}

/* Simple logic for toggling icons handled in JS or via classes */

.separator {
    width: 1px;
    height: 24px;
    background: #555;
    margin: 0 4px;
}

.status-indicator {
    color: #f87171; /* Disconnected red */
}

.status-indicator.connected {
    color: #4ade80; /* Connected green */
}