/* Explain: Styling for live session elements including camera tiles and whiteboard tools. */
/* السبورة الرقمية وأدواتها */
.board-wrap {
    position: relative;
    width: 100%;
    height: 58vh;
    min-height: 320px;
    max-height: 620px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: inset 0 2px 10px rgba(23, 37, 84, 0.06);
}

.board-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
    cursor: crosshair;
}

.board-tool {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.85rem;
    border: 1px solid var(--border-color);
    background: var(--background-color);
    color: var(--text-color);
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    cursor: pointer;
}

.board-tool:hover {
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.board-tool.is-active {
    background: var(--primary-color);
    color: #FFFFFF;
    border-color: var(--primary-color);
}

.swatch {
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 9999px;
    border: 2px solid #FFFFFF;
    box-shadow: 0 0 0 1px var(--border-color);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.swatch:hover {
    transform: scale(1.1);
}

.swatch.is-active {
    box-shadow: 0 0 0 2px var(--primary-color);
    transform: scale(1.12);
}

/* أزرار تحكم الأستاذ بحجم كاميرات التلاميذ */
.cam-size-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    min-height: 2.25rem;
    padding: 0 0.85rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--background-color);
    color: var(--text-color);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.cam-size-btn:hover {
    border-color: var(--accent-color);
}

.cam-size-btn.is-active {
    background: var(--primary-color);
    color: #FFFFFF;
    border-color: var(--primary-color);
}

/* تكبير بطاقة الكاميرا لملء الشاشة أثناء مشاهدة الدرس */
.cam-tile:fullscreen,
.cam-tile:-webkit-full-screen {
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
    border-radius: 0;
    aspect-ratio: auto;
}

.cam-tile:fullscreen video,
.cam-tile:-webkit-full-screen video {
    object-fit: contain;
}