.back-card-wrapper {
	width: 100%;
	height: 100%;
	position: absolute;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	transform: rotateY(180deg);
}
.back-video-container{
	width: 100%;
	height: 100%;
}

#back-card-video-frame {
	width: 100%;
	position: absolute;
	height: 100%;
}

#back-card-video-frame-inner {
	height: 100%;
	width: 100%;
	position: relative;
}

#back-card-video-animation-container {
	width: 100%;
	height: 15dvh;
	display: flex;
	align-items: center;
	justify-content: center;
	pointer-events: none;
}

#back-card-video-animation {
	width: 60%;
	height: 100%;
}

#back-card-video {
	height: 100%;
	width: 100%;
}

.back-card-video-zoomed {
	object-fit: cover;
	object-position: center center;
}

.back-card-video-origin {
	object-fit: contain;
	object-position: center center;
}

#back-card-video-control {
	position: absolute;
	bottom: 0;
	width: 100%;
	height: 100%;
	display: flex;
	flex-flow: column-reverse;
}

#back-card-video-bottom-box {
	width: 100%;
	height: auto;
	display: flex;
	flex-flow: column-reverse;
	z-index: 1;
	position: absolute;
	bottom: 0;
}

.back-card-video-box-seek {
	width: 100%;
	height: 30px;
	display: flex;
	align-items: start;
	justify-content: center;
}

#back-card-video-box-description {
	width: 100%;
	height: auto;
	overflow: hidden;
	display: flex;
	margin-bottom: 10px;
}

.back-card-video-box-description-twolinemin {
	min-height: 6%;
}

#back-card-video-description {
	width: 80%;
	text-align: left;
	margin-left: 10px;
	color: white;
}

#back-card-video-button {
	display: flex;
	width: 20%;
	align-items: end;
	justify-content: right;
}

#back-card-video-share {
	display: block;
	height: 100%;
	width: 20%;
	height: 100%;
}

#back-card-video-button-share {
	height: 25px;
	width: 25px;
	margin-bottom: 8px;
	border-radius: 25px;
	padding: 2px;
	padding-right: 13px;
	position: absolute;
}

#back-card-video-button-share img {
	height: 100%;
	width: 100%;
}

#back-card-toogle-mute {
	position: absolute;
	height: 20px;
	width: auto;
	box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);
	cursor: pointer;
	border-radius: 4px;
	top: 10px;
	left: 10px;
	padding: 5px;
}

#back-card-image-sound {
	display: block;
	position: relative;
	aspect-ratio: 1;
	height: 100%;
	display: block;
	float: left;
}

#back-card-icon-sound {
	position: absolute;
	top: 0;
	left: 0;
	width: auto;
	height: 100%;
	object-fit: contain;
}

#back-card-text-mute {
	padding-left: 8px;
	display: block;
	height: 100%;
	line-height: 100%;
	width: auto;
	float: left;
	color: black;
}

#back-card-text-mute span {
	display: flex;
	height: 100%;
	width: 100%;
	align-items: center;
}

.background_grey {
	background-color: rgba(204, 204, 204, 1);
}

#back-card-video-box-play {
	position: absolute;
	width: 100%;
	height: 80%;
	top: 10%;
	display: flex;
	align-items: center;
	justify-content: center;
}

#back-card-video-play-button {
	width: 100% !important;
	height: 100% !important;
	object-fit: none;
	object-position: center;
}

#back-card-video-box-seek-control {
	background-color: white;
	height: 5px;
	width: 100%;
	margin-left: 10px;
	margin-right: 10px;
	background-color: rgba(0, 0, 0, 0.4);
}

#back-card-video-box-seek-control span {
	display: block;
	background-color: white;
	height: 100%;
	width: 0%;
	border-radius: 10px;
}

/* ================================================
   BACK CARD SEEKBAR THUMB INDICATOR - ADD ONLY
   ================================================ */

/* Tăng vùng touch bằng pseudo-element */
#back-card-video-box-seek {
    position: relative;
}

.back-card-video-box-seek::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 60px;
    transform: translateY(-50%);
    z-index: 1;
}

/* Thumb indicator - Ẩn mặc định */
#back-card-video-box-seek .thumb-indicator {
    display: none;
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%) translateX(50%);
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
    z-index: 2;
    pointer-events: none;
}

/* Thumb hiện khi drag */
.back-card-video-box-seek.is-dragging .thumb-indicator {
    display: block;
}