/* Виджет видеоурока (правый нижний угол) */
#page-lesson-root {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 9000;
    max-width: min(20rem, calc(100vw - 2rem));
    pointer-events: none;
}

#page-lesson-root .page-lesson-widget,
#page-lesson-root .page-lesson-fab {
    pointer-events: auto;
}

.page-lesson-widget {
    background: linear-gradient(145deg, rgba(30, 27, 75, 0.95), rgba(17, 24, 39, 0.98));
    border: 1px solid rgba(139, 92, 246, 0.35);
    border-radius: 1rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
    overflow: hidden;
    animation: page-lesson-in 0.35s ease-out;
}

@keyframes page-lesson-in {
    from { opacity: 0; transform: translateY(12px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.page-lesson-widget__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.5rem 0.65rem 0;
}

.page-lesson-widget__label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(196, 181, 253, 0.9);
}

.page-lesson-widget__minimize,
.page-lesson-modal__close {
    border: none;
    background: transparent;
    color: rgba(156, 163, 175, 0.9);
    cursor: pointer;
    padding: 0.15rem 0.35rem;
    line-height: 1;
    font-size: 1.1rem;
}

.page-lesson-widget__minimize:hover,
.page-lesson-modal__close:hover {
    color: #fff;
}

.page-lesson-widget__body {
    display: flex;
    gap: 0.65rem;
    padding: 0.5rem 0.65rem 0.65rem;
}

.page-lesson-widget__preview {
    position: relative;
    flex-shrink: 0;
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 0.65rem;
    overflow: hidden;
    background: rgba(91, 33, 182, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-lesson-widget__preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-lesson-widget__preview-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: rgba(232, 121, 249, 0.9);
}

.page-lesson-widget__play-badge {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.25);
    font-size: 1.25rem;
}

.page-lesson-widget__text {
    min-width: 0;
    flex: 1;
}

.page-lesson-widget__title {
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 0.2rem;
}

.page-lesson-widget__desc {
    font-size: 0.72rem;
    color: rgba(209, 213, 219, 0.85);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.page-lesson-widget__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding: 0 0.65rem 0.65rem;
}

.page-lesson-btn {
    font-size: 0.72rem;
    padding: 0.35rem 0.65rem;
    border-radius: 0.5rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.page-lesson-btn--primary {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.9), rgba(59, 130, 246, 0.85));
    color: #fff;
    font-weight: 500;
}

.page-lesson-btn--primary:hover {
    filter: brightness(1.08);
}

.page-lesson-btn--ghost {
    background: transparent;
    color: rgba(156, 163, 175, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
}

.page-lesson-btn--ghost:hover {
    color: #e5e7eb;
    border-color: rgba(255, 255, 255, 0.2);
}

.page-lesson-fab {
    width: 3rem;
    height: 3rem;
    border-radius: 9999px;
    border: 1px solid rgba(139, 92, 246, 0.45);
    background: linear-gradient(145deg, rgba(67, 56, 202, 0.95), rgba(109, 40, 217, 0.9));
    color: #fff;
    font-size: 1.15rem;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: page-lesson-in 0.25s ease-out;
}

.page-lesson-fab:hover {
    filter: brightness(1.1);
}

.page-lesson-modal {
    position: fixed;
    inset: 0;
    z-index: 9500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(4px);
}

.page-lesson-modal.hidden {
    display: none;
}

.page-lesson-modal__panel {
    width: min(52rem, 100%);
    max-height: calc(100vh - 2rem);
    overflow: auto;
    background: linear-gradient(160deg, rgba(17, 24, 39, 0.98), rgba(30, 27, 75, 0.96));
    border: 1px solid rgba(139, 92, 246, 0.35);
    border-radius: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
}

.page-lesson-modal__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem 0.5rem;
}

.page-lesson-modal__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
}

.page-lesson-modal__subtitle {
    font-size: 0.85rem;
    color: rgba(209, 213, 219, 0.85);
    margin-top: 0.25rem;
}

.page-lesson-modal__video-wrap {
    padding: 0 1.25rem;
}

.page-lesson-modal__video {
    width: 100%;
    max-height: min(60vh, 32rem);
    border-radius: 0.65rem;
    background: #000;
}

.page-lesson-modal__related {
    padding: 0.75rem 1.25rem 1.25rem;
}

.page-lesson-modal__related-label {
    font-size: 0.75rem;
    color: rgba(156, 163, 175, 0.95);
    margin-bottom: 0.35rem;
}

.page-lesson-modal__related select {
    width: 100%;
    background: rgba(31, 41, 55, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #fff;
    border-radius: 0.5rem;
    padding: 0.45rem 0.6rem;
    font-size: 0.85rem;
}

@media (max-width: 480px) {
    #page-lesson-root {
        right: 0.65rem;
        bottom: 0.65rem;
        max-width: calc(100vw - 1.3rem);
    }

    .page-lesson-widget__preview {
        width: 3.75rem;
        height: 3.75rem;
    }
}