.video-article {
    background: var(--white);
    border-radius: 20px;
    padding: 0;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.video-player-section {
    background: #000;
    border-radius: 0;
}

.video-player-section.is-fullscreen {
    width: 100vw !important;
    height: 100vh !important;
    background: #000 !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    z-index: 2147483647 !important;
    margin: 0 !important;
    padding: 0 !important;
}

.video-player-section.is-fullscreen .video-player-wrapper {
    width: 100% !important;
    height: 100% !important;
    position: relative !important;
}

.video-player-section.is-fullscreen .video-container {
    width: 100% !important;
    height: 100% !important;
    max-height: none !important;
    max-width: none !important;
}

.video-player-section.is-fullscreen .video-player {
    width: 100% !important;
    height: 100% !important;
    max-height: none !important;
    max-width: none !important;
    object-fit: contain !important;
}

.video-player-section.is-fullscreen .video-play-overlay {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
}

.video-player-section.is-fullscreen .video-controls {
    position: absolute !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    padding: 80px 40px 30px !important;
    z-index: 10 !important;
}

.video-player-wrapper {
    position: relative;
    overflow: hidden;
}

.video-container {
    position: relative;
    width: 100%;
    background: #000;
}

.video-player {
    width: 100%;
    display: block;
    max-height: 600px;
    background: #000;
}

.video-play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(2px);
}

.video-play-overlay:hover {
    background: rgba(0, 0, 0, 0.35);
}

.video-play-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.video-play-btn-large {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 40px rgba(42, 105, 67, 0.5);
    border: 4px solid rgba(255, 255, 255, 0.25);
    position: relative;
}

.video-play-btn-large::before {
    content: '';
    position: absolute;
    inset: -12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
}

.video-play-overlay:hover .video-play-btn-large {
    transform: scale(1.12);
    box-shadow: 0 16px 56px rgba(42, 105, 67, 0.65);
    border-color: rgba(255, 255, 255, 0.4);
}

.video-play-btn-large svg {
    width: 40px;
    height: 40px;
    /*margin-left: 6px;*/
    position: relative;
    z-index: 1;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.3) 20%, rgba(0, 0, 0, 0.7) 50%, rgba(0, 0, 0, 0.95) 100%);
    padding: 60px 24px 24px;
    opacity: 1;
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.video-player-wrapper:not(:hover) .video-controls {
    opacity: 0;
    transform: translateY(10px);
}

.video-player-wrapper:hover .video-controls {
    opacity: 1;
    transform: translateY(0);
}

.progress-bar {
    margin-bottom: 18px;
}

.progress-track {
    height: 5px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    cursor: pointer;
    overflow: visible;
    position: relative;
    transition: all 0.2s ease;
}

.progress-track:hover {
    height: 8px;
}

.progress-filled {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-green) 0%, var(--light-green) 50%, var(--secondary-yellow) 100%);
    border-radius: 10px;
    transition: width 0.1s linear;
    position: relative;
}

.progress-filled::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--white) 0%, #f0f0f0 100%);
    border-radius: 50%;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.4), 0 0 0 4px rgba(42, 105, 67, 0.3);
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-track:hover .progress-filled::after {
    opacity: 1;
    transform: translateY(-50%) scale(1);
}

.controls-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.control-btn {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--white);
    cursor: pointer;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 14px;
    width: 46px;
    height: 46px;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

.control-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.control-btn#playPauseBtn {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
    border: none;
    box-shadow: 0 6px 24px rgba(42, 105, 67, 0.5);
}

.control-btn#playPauseBtn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 32px rgba(42, 105, 67, 0.6);
}

.control-btn svg {
    width: 22px;
    height: 22px;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.control-btn#playPauseBtn svg {
    width: 26px;
    height: 26px;
}

.icon-pause,
.icon-exit-fullscreen {
    display: none;
}

.playing .icon-play,
.playing .icon-fullscreen {
    display: none;
}

.playing .icon-pause,
.fullscreen .icon-exit-fullscreen {
    display: block;
}

.time-display {
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    margin-left: 8px;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    font-variant-numeric: tabular-nums;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.volume-slider {
    width: 0;
    height: 5px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    outline: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    cursor: pointer;
}

.volume-control:hover .volume-slider {
    width: 90px;
    opacity: 1;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--white) 0%, #f0f0f0 100%);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.35);
}

.volume-slider::-webkit-slider-thumb:hover {
    background: linear-gradient(135deg, var(--secondary-yellow) 0%, var(--bright-yellow) 100%);
    transform: scale(1.2);
    box-shadow: 0 4px 14px rgba(246, 211, 47, 0.5);
}

.video-header {
    padding: 40px 50px 0;
}

.video-meta-top {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 25px;
    align-items: center;
}

.video-category {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.video-duration-full,
.video-date,
.video-views {
    color: var(--text-light-gray);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.video-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-black);
    line-height: 1.25;
    margin-bottom: 22px;
    letter-spacing: -0.5px;
}

.video-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-gray);
}

.video-tags .tag {
    background-color: var(--bg-light);
    color: var(--text-gray);
    padding: 7px 16px;
    border-radius: 18px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.video-tags .tag:hover {
    background-color: var(--white);
    color: var(--primary-green);
    border-color: var(--primary-green);
}

.video-description {
    padding: 30px 50px 0;
}

.section-subtitle {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-black);
    margin-bottom: 15px;
}

.video-description p {
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.8;
}

.video-chapters {
    padding: 30px 50px 0;
}

.chapter-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chapter-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 18px 22px;
    background: var(--bg-light);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.chapter-item:hover {
    background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 100%);
    transform: translateX(5px);
    border-color: var(--primary-green);
}

.chapter-time {
    flex-shrink: 0;
    width: 70px;
    font-weight: 700;
    color: var(--primary-green);
    font-size: 15px;
    background: var(--white);
    padding: 8px 14px;
    border-radius: 10px;
    text-align: center;
}

.chapter-info {
    flex: 1;
}

.chapter-title {
    font-weight: 600;
    color: var(--text-black);
    font-size: 15px;
    margin-bottom: 4px;
}

.chapter-desc {
    color: var(--text-light-gray);
    font-size: 14px;
}

.video-footer {
    padding: 30px 50px 40px;
}

.video-actions {
    display: flex;
    gap: 15px;
}

.action-btn-primary,
.action-btn-secondary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 26px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
}

.action-btn-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
    color: var(--white);
}

.action-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(42, 105, 67, 0.4);
}

.action-btn-primary svg {
    width: 20px;
    height: 20px;
}

.action-btn-secondary {
    background: var(--white);
    color: var(--text-gray);
    border: 2px solid var(--border-gray);
}

.action-btn-secondary:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
    transform: translateY(-2px);
}

.action-btn-secondary svg {
    width: 20px;
    height: 20px;
}

.related-videos {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    margin-top: 30px;
    box-shadow: var(--shadow-sm);
}

.related-videos .video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.related-videos .video-card {
    background-color: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-gray);
}

.related-videos .video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.related-videos .video-link {
    text-decoration: none;
    display: block;
}

.related-videos .video-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
}

.related-videos .video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.related-videos .video-card:hover .video-thumbnail img {
    transform: scale(1.08);
}

.related-videos .video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(42, 105, 67, 0.95) 0%, rgba(61, 139, 90, 0.95) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    box-shadow: 0 8px 24px rgba(42, 105, 67, 0.4);
}

.related-videos .video-card:hover .video-play-btn {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--light-green) 100%);
    transform: translate(-50%, -50%) scale(1.15);
    box-shadow: 0 12px 32px rgba(42, 105, 67, 0.5);
}

.related-videos .video-play-btn svg {
    width: 22px;
    height: 22px;
    margin-left: 3px;
}

.related-videos .video-duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.7) 100%);
    color: var(--white);
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    z-index: 2;
    backdrop-filter: blur(4px);
}

.related-videos .video-info {
    padding: 20px;
}

.related-videos .video-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-black);
    line-height: 1.5;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.related-videos .video-card:hover .video-title {
    color: var(--primary-green);
}

.related-videos .video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light-gray);
    font-size: 13px;
}

.instructor-widget .instructor-info {
    text-align: center;
}

.instructor-avatar {
    margin-bottom: 18px;
    display: flex;
    justify-content: center;
}

.instructor-avatar img {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--white);
    box-shadow: var(--shadow-md);
}

.instructor-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-black);
    margin-bottom: 6px;
}

.instructor-title {
    color: var(--primary-green);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.instructor-desc {
    color: var(--text-light-gray);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 1200px) {
    .related-videos .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .video-header,
    .video-description,
    .video-chapters,
    .video-footer {
        padding-left: 35px;
        padding-right: 35px;
    }

    .video-title {
        font-size: 28px;
    }

    .related-videos .video-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .video-header,
    .video-description,
    .video-chapters,
    .video-footer {
        padding-left: 28px;
        padding-right: 28px;
    }

    .video-title {
        font-size: 24px;
    }

    .video-meta-top {
        
        align-items: flex-start;
        gap: 8px;
    }

    .video-actions {
        flex-wrap: wrap;
    }

    .video-play-btn-large {
        width: 80px;
        height: 80px;
    }

    .video-play-btn-large svg {
        width: 32px;
        height: 32px;
    }

    .controls-right .volume-control {
        display: none;
    }

    .chapter-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .control-btn {
        width: 42px;
        height: 42px;
        padding: 10px;
        border-radius: 12px;
    }

    .control-btn#playPauseBtn {
        width: 50px;
        height: 50px;
    }

    .control-btn svg {
        width: 20px;
        height: 20px;
    }

    .time-display {
        font-size: 13px;
    }
}

@media (max-width: 576px) {
    .video-header,
    .video-description,
    .video-chapters,
    .video-footer {
        padding-left: 22px;
        padding-right: 22px;
    }

    .video-title {
        font-size: 22px;
    }

    .action-btn-primary,
    .action-btn-secondary {
        width: 100%;
        justify-content: center;
    }
}

.comment-avatar {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
}

.comment-avatar img {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--white);
    box-shadow: var(--shadow-sm);
}

.form-avatar {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
}

.form-avatar img {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--white);
    box-shadow: var(--shadow-sm);
}