* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	background-color: #fafafa;
	color: #555;
	line-height: 1.6;
}

html {
	scroll-behavior: smooth;
}

.banner {
	background: linear-gradient(135deg, #00897b 0%, #0097a7 50%, #00838f 100%);
	background-image: url('images/an-giang-banner.jpg');
	background-size: cover;
	background-position: center;
	background-attachment: fixed;
	padding-top: 12rem;
	padding-bottom: 12rem;
	text-align: center !important;
	color: white !important;
	box-shadow: 0 8px 24px rgba(0, 137, 123, 0.25);
	position: relative;
	overflow: hidden;
}

.banner-overlay {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-color: rgba(0, 0, 0, 0.5);
	backdrop-filter: blur(4px);
	z-index: 1;
}

.banner-content {
	position: relative;
	z-index: 2;
}

.banner h1 {
	font-size: 3rem;
	font-weight: bold;
	text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
	letter-spacing: 1px;
	margin: 0;
}

.slogan {
	background: linear-gradient(to bottom, #e0f2f1, #b2dfdb) !important;
	text-align: center !important;
	width: 100%;
	padding-right: 2rem;
	padding-left: 2rem;
	padding-top: 3rem;
	padding-bottom: 3rem;
}

.slogan-h2{
	font-size: 120%;
}

.row {
	display: flex;
	flex-wrap: wrap;
	margin-top: -1px;  
	max-width: 100%;
	padding-right: 3rem;
	padding-left: 3rem;
}

.block_3 {
	flex: 0 0 auto;
	width: 33.33333%;
	padding: 25px;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	border-radius: 10px;
}

.block_3 h2 {
	color: #00695c;
	font-size: 1.5rem;
	margin-bottom: 0.5rem;
}

.block_3 p {
	color: #555;
	font-size: 1rem;
}

div#b3a:hover, div#b3b:hover, div#b3c:hover {
	transform: translateY(-8px);
	color: #00695c;
	background: linear-gradient(135deg, rgba(0, 137, 123, 0.1), rgba(0, 151, 167, 0.1));
	box-shadow: 0 8px 20px rgba(0, 137, 123, 0.2);
	border: 2px solid #00897b;
}

.nav {
	display: flex;
	background-color: #00695c;
	padding: 0;
	flex-wrap: wrap;
	justify-content: center;
	box-shadow: 0 2px 8px rgba(0, 105, 92, 0.2);
}

.nav-link {
	color: white;
	text-decoration: none;
	padding: 12px 24px;
	display: block;
	transition: all 0.3s ease;
	border-bottom: 4px solid transparent;
	font-weight: 500;
	font-size: 1rem;
}

.nav-link:hover {
	background: linear-gradient(180deg, rgba(0, 137, 123, 0.3), transparent);
	color: #fff;
	border-bottom: 4px solid #4db6ac;
	transform: translateY(-2px);
}

.nav-link.active {
	background-color: #00897b;
	border-bottom: 4px solid #4db6ac;
}

.content {
	padding: 3rem 2rem;
	max-width: 1300px;
	margin: 0 auto;
	background-color: #fafafa;
}

.content h2 {
	color: #00695c;
	font-size: 2.2rem;
	margin-bottom: 2rem;
	text-align: center;
	font-weight: bold;
	position: relative;
	padding-bottom: 1rem;
}

.content h2::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
	width: 100px;
	height: 4px;
	background: linear-gradient(90deg, #00897b, #00bcd4);
	border-radius: 2px;
}

.intro-section {
	background: linear-gradient(135deg, #e0f2f1, #b2dfdb);
	padding: 2.5rem;
	border-radius: 12px;
	text-align: center;
	margin-bottom: 3rem;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.15);
}

.intro-section h2 {
	color: #00695c;
	font-size: 2rem;
	margin-top: 0;
	margin-bottom: 1rem;
}

.intro-text {
	font-size: 1.05rem;
	color: #555;
	line-height: 1.8;
	max-width: 900px;
	margin: 0 auto;
}

.card-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 2rem;
	margin-bottom: 3rem;
}

.card {
	background: white;
	border-radius: 12px;
	padding: 2rem;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.1);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	border-top: 5px solid #00897b;
	text-align: center;
}

.card:hover {
	transform: translateY(-8px);
	box-shadow: 0 12px 30px rgba(0, 137, 123, 0.2);
	border-top-color: #00bcd4;
}

.card-icon {
	font-size: 3rem;
	margin-bottom: 1rem;
	display: inline-block;
	animation: float 3s ease-in-out infinite;
}

@keyframes float {
	0%, 100% { transform: translateY(0px); }
	50% { transform: translateY(-10px); }
}

.card h3 {
	color: #00695c;
	font-size: 1.5rem;
	margin: 1rem 0;
	font-weight: bold;
}

.card p {
	color: #666;
	font-size: 0.95rem;
	line-height: 1.6;
	margin-bottom: 1.5rem;
}

.card-link {
	display: inline-block;
	color: #00897b;
	text-decoration: none;
	font-weight: bold;
	transition: all 0.3s ease;
	padding: 0.5rem 1rem;
	border-bottom: 2px solid #00bcd4;
}

.card-link:hover {
	color: #00bcd4;
	border-bottom-color: #00897b;
	transform: translateX(5px);
}

.cta-section {
	background: linear-gradient(135deg, #00897b, #00bcd4);
	padding: 3rem;
	border-radius: 12px;
	text-align: center;
	color: white;
	margin-top: 3rem;
	box-shadow: 0 8px 25px rgba(0, 137, 123, 0.25);
}

.cta-section h2 {
	color: white;
	font-size: 2rem;
	margin-top: 0;
	margin-bottom: 1rem;
}

.cta-section h2::after {
	background: white;
}

.cta-section p {
	font-size: 1.1rem;
	margin-bottom: 1.5rem;
	color: rgba(255, 255, 255, 0.95);
}

.cta-section .btn {
	background: white;
	color: #00897b;
	padding: 1rem 2.5rem;
	font-size: 1.1rem;
	box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.cta-section .btn:hover {
	background: #f0f7f6;
	transform: translateY(-3px);
	box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.videos-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 2rem;
	margin-bottom: 3rem;
}

.video-item {
	background: white;
	border-radius: 12px;
	overflow: hidden;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.1);
	transition: all 0.3s ease;
}

.video-item:hover {
	transform: translateY(-8px);
	box-shadow: 0 12px 30px rgba(0, 137, 123, 0.2);
}

.video-placeholder {
	background: linear-gradient(135deg, #00897b, #00bcd4);
	height: 200px;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	color: white;
	position: relative;
	overflow: hidden;
}

.video-placeholder::before {
	content: '';
	position: absolute;
	width: 100%;
	height: 100%;
	background: rgba(255, 255, 255, 0.1);
	animation: shimmer-anim 2s infinite;
}

@keyframes shimmer-anim {
	0% { transform: translateX(-100%); }
	100% { transform: translateX(100%); }
}

.placeholder-icon {
	font-size: 3rem;
	z-index: 1;
}

.video-placeholder p {
	margin: 0.5rem 0 0 0;
	font-size: 0.9rem;
	z-index: 1;
}

.video-item h3 {
	color: #00695c;
	font-size: 1.2rem;
	margin: 1.2rem;
	margin-bottom: 0.5rem;
	font-weight: bold;
}

.video-item p {
	color: #666;
	font-size: 0.9rem;
	margin: 0 1.2rem 1.2rem;
	line-height: 1.6;
}

.video-info {
	background: #f0f7f6;
	padding: 2rem;
	border-radius: 12px;
	margin-top: 2rem;
}

.info-box {
	background: white;
	padding: 1.5rem;
	border-radius: 8px;
	border-left: 4px solid #00897b;
	margin-bottom: 1.5rem;
}

.info-box h4 {
	color: #00695c;
	font-size: 1.1rem;
	margin: 0 0 0.7rem 0;
}

.info-box p {
	color: #666;
	margin: 0;
	line-height: 1.6;
}

.location-box {
	background: white;
	border-left: 5px solid #00897b;
	padding: 2rem;
	margin-bottom: 1.8rem;
	border-radius: 10px;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.12);
	transition: all 0.3s ease;
}

.location-box:hover {
	transform: translateY(-4px);
	box-shadow: 0 8px 25px rgba(0, 137, 123, 0.2);
	border-left-color: #00bcd4;
}

.location-box h3 {
	color: #00695c;
	margin-top: 0;
	font-size: 1.6rem;
	font-weight: bold;
	margin-bottom: 1rem;
}

.location-box p {
	line-height: 1.8;
	color: #555;
	font-size: 1rem;
	margin: 0.8rem 0;
}

.location-box strong {
	color: #00897b;
}

/* Location Box with Image Layout */
.location-box.location-with-img {
	display: flex;
	gap: 2.5rem;
	align-items: stretch;
	margin-bottom: 2.5rem;
	padding: 2rem;
	background: white;
	border: 1px solid #e0f2f1;
	border-left: 5px solid #00897b;
	border-radius: 10px;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.1);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.location-box.location-with-img:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 30px rgba(0, 137, 123, 0.2);
}

.location-img-placeholder {
	flex: 0 0 350px;
	height: 280px;
	background: linear-gradient(135deg, #00897b 0%, #0097a7 50%, #00838f 100%);
	border-radius: 8px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: rgba(255, 255, 255, 0.8);
	font-size: 1.2rem;
	font-weight: 500;
	animation: shimmer 2s infinite;
	flex-shrink: 0;
}

.location-img-placeholder p {
	margin: 0;
	color: white;
}

.location-text {
	flex: 1;
	min-width: 0;
	display: flex;
	flex-direction: column;
	justify-content: center;
}

.location-text h3 {
	margin-top: 0;
	margin-bottom: 1rem;
	color: #00695c;
	font-size: 1.5rem;
}

.location-text p {
	margin: 0.7rem 0;
	color: #666;
	line-height: 1.7;
}

.experience-box {
	background: white;
	border-left: 5px solid #00bcd4;
	padding: 2rem;
	margin-bottom: 1.8rem;
	border-radius: 10px;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.08);
	transition: all 0.3s ease;
}

.experience-box:hover {
	transform: translateY(-4px);
	box-shadow: 0 8px 25px rgba(0, 137, 123, 0.15);
	border-left-color: #00897b;
}

.experience-box h3 {
	color: #00695c;
	margin-top: 0;
	font-size: 1.6rem;
	font-weight: bold;
	margin-bottom: 1rem;
}

.experience-item {
	display: none;
}

.experience-item.experience-with-img {
	display: flex;
	gap: 2.5rem;
	align-items: stretch;
	margin-bottom: 2.5rem;
	padding: 2rem;
	background: white;
	border: 1px solid #e0f2f1;
	border-left: 4px solid #00bcd4;
	border-radius: 10px;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.08);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.experience-item.experience-with-img:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 30px rgba(0, 137, 123, 0.15);
}

.experience-img-placeholder {
	flex: 0 0 300px;
	height: 240px;
	background: linear-gradient(135deg, #00897b 0%, #0097a7 50%, #00838f 100%);
	border-radius: 8px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: rgba(255, 255, 255, 0.8);
	font-size: 1.1rem;
	font-weight: 500;
	animation: shimmer 2s infinite;
	flex-shrink: 0;
}

.experience-img-placeholder p {
	margin: 0;
	color: white;
}

.experience-text {
	flex: 1;
	min-width: 0;
	display: flex;
	flex-direction: column;
	justify-content: center;
}

.experience-text h4 {
	margin-top: 0;
	margin-bottom: 1rem;
	color: #00695c;
	font-size: 1.3rem;
	font-weight: bold;
}

.experience-text p {
	margin: 0;
	color: #666;
	font-size: 0.95rem;
	line-height: 1.7;
}

/* Image Placeholder Styling */
.card-with-img {
	display: flex;
	flex-direction: column;
}

.card-img-placeholder {
	width: 100%;
	height: 200px;
	background: linear-gradient(135deg, #00897b 0%, #0097a7 50%, #00838f 100%);
	border-radius: 8px 8px 0 0;
	display: flex;
	align-items: center;
	justify-content: center;
	color: rgba(255, 255, 255, 0.7);
	font-size: 1.1rem;
	font-weight: 500;
	margin: -16px -16px 12px -16px;
	animation: shimmer 2s infinite;
}

.card-img-placeholder p {
	margin: 0;
	color: white;
	font-size: 1rem;
	font-weight: 500;
}

/* Video Section Styling */
.video-intro-section {
	display: flex;
	gap: 2rem;
	align-items: center;
	margin-top: 2rem;
	margin-bottom: 3rem;
	padding: 2rem;
	background: linear-gradient(135deg, #e0f2f1, #b2dfdb);
	border-radius: 12px;
	box-shadow: 0 4px 15px rgba(0, 137, 123, 0.1);
}

.video-container {
	flex: 1;
	min-width: 0;
}

.video-container video {
	width: 100%;
	height: auto;
	display: block;
}

.video-description {
	flex: 1;
}

.video-description h3 {
	color: #00695c;
	font-size: 1.5rem;
	margin-bottom: 1rem;
	margin-top: 0;
}

.video-description p {
	color: #555;
	font-size: 1rem;
	line-height: 1.8;
	margin-bottom: 1.5rem;
}

.video-description .btn {
	display: inline-block;
	background: linear-gradient(135deg, #00897b, #0097a7);
	color: white;
	padding: 12px 28px;
	text-decoration: none;
	border-radius: 8px;
	font-weight: 500;
	transition: all 0.3s ease;
	box-shadow: 0 4px 12px rgba(0, 137, 123, 0.2);
}

.video-description .btn:hover {
	transform: translateY(-3px);
	box-shadow: 0 6px 16px rgba(0, 137, 123, 0.3);
	color: white;
}

/* Shimmer Animation for Image Placeholders */
@keyframes shimmer {
	0%, 100% {
		background: linear-gradient(135deg, #00897b 0%, #0097a7 50%, #00838f 100%);
	}
	50% {
		background: linear-gradient(135deg, #0097a7 0%, #00838f 50%, #00897b 100%);
	}
}

.form-container {
	max-width: 700px;
	margin: 3rem auto;
	padding: 2.5rem;
	background: linear-gradient(135deg, #f0f7f6, #e8f5f4);
	border-radius: 12px;
	box-shadow: 0 8px 25px rgba(0, 137, 123, 0.15);
	border-top: 5px solid #00897b;
}

.form-container fieldset {
	border: none;
	padding: 0;
}

.form-container legend {
	font-size: 1.8rem;
	color: #00695c;
	font-weight: bold;
	margin-bottom: 2rem;
	text-align: center;
	width: 100%;
}

.form-table {
	width: 100%;
	border-collapse: collapse;
}

.form-table td {
	padding: 1rem;
	border-bottom: 1px solid #ddd;
}

.form-table label {
	color: #333;
	font-weight: 500;
}

.form-table input, .form-table textarea, .form-table select {
	width: 100%;
	padding: 0.85rem;
	border: 2px solid #b2dfdb;
	border-radius: 6px;
	font-family: Arial, sans-serif;
	font-size: 1rem;
	background-color: white;
	transition: all 0.3s ease;
}

.form-table input:focus, .form-table textarea:focus, .form-table select:focus {
	outline: none;
	border-color: #00897b;
	box-shadow: 0 0 8px rgba(0, 137, 123, 0.3), inset 0 0 4px rgba(0, 137, 123, 0.1);
	background-color: #f0f7f6;
}

.required {
	color: red;
}

.btn, .btn-submit, .btn-reset {
	color: white;
	padding: 0.9rem 2rem;
	border: none;
	border-radius: 6px;
	cursor: pointer;
	font-size: 1.05rem;
	font-weight: bold;
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	text-decoration: none;
	display: inline-block;
	margin-right: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.btn, .btn-submit {
	background: linear-gradient(135deg, #00897b, #00bcd4);
	box-shadow: 0 4px 12px rgba(0, 137, 123, 0.25);
}

.btn:hover, .btn-submit:hover {
	background: linear-gradient(135deg, #00695c, #0097a7);
	transform: translateY(-3px);
	box-shadow: 0 8px 20px rgba(0, 137, 123, 0.4);
}

.btn-reset {
	background: linear-gradient(135deg, #757575, #616161);
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-reset:hover {
	background: linear-gradient(135deg, #616161, #424242);
	transform: translateY(-3px);
	box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

table {
	width: 90%;
	margin: 2rem auto;
	border-collapse: collapse;
}

table tr {
	transition: all 0.3s ease;
}

table tr:hover {
	background-color: #f0f7f6;
}

.cell_img {
	width: 50%;
	padding: 1.5rem;
}

.cell_text {
	width: 50%; 
	padding: 1.5rem 2rem;
	vertical-align: top;
	color: #555;
}

.cell_text h3 {
	color: #00695c;
	font-size: 1.4rem;
	margin-top: 0;
}

.cell_text ul li {
	color: #666;
	margin-bottom: 0.7rem;
	line-height: 1.6;
}

.img {
	width: 100%; 
	height: auto;
	border-radius: 10px;
	box-shadow: 0 6px 20px rgba(0, 137, 123, 0.2);
	transition: all 0.3s ease;
}

.img:hover {
	transform: scale(1.02);
	box-shadow: 0 10px 30px rgba(0, 137, 123, 0.3);
}

.img_tv {
	width: 50%; 
	height: 50%;
	margin: 0 auto;
}

.menu {
	font-size:120%; 
	text-decoration: none;
}

.cell {
	text-align: justify; 
	padding: 1.5em;
}

footer {
	background: linear-gradient(135deg, #00695c, #004d40); 
	color: white;
	margin: 0; 
	padding: 3rem 1rem;
	margin-top: 4rem;
	box-shadow: 0 -4px 15px rgba(0, 105, 92, 0.1);
}

footer p {
	margin: 0 0 1.2rem 0;
	font-weight: bold;
	color: #4db6ac;
	font-size: 1.1rem;
	letter-spacing: 0.5px;
}

footer ul {
	list-style: none;
	padding: 0;
	margin: 0;
}

footer li {
	margin-bottom: 0.7rem;
	line-height: 1.8;
}

.link {
	color: #80cbc4; 
	text-align: left;
	text-decoration: none;
	transition: all 0.3s ease;
	font-weight: 500;
}

.link:hover {
	color: #fff;
	text-decoration: underline;
	text-shadow: 0 0 8px rgba(77, 182, 172, 0.3);
}

a:hover {
	color: #4db6ac;
}

@media (max-width: 768px) {
	.block_3 {
		width: 100%;
	}
	.cell_img, .cell_text {
		width: 100%;
		padding: 1rem;
	}
	.banner h1 {
		font-size: 1.8rem;
		padding: 0 1rem;
	}
	.nav-link {
		padding: 10px 15px;
		font-size: 0.9rem;
	}
	.form-container {
		margin: 1.5rem;
		padding: 1.5rem;
	}
	table {
		width: 95%;
	}
	.content {
		padding: 1.5rem 1rem;
	}
	.card-grid {
		grid-template-columns: 1fr;
	}
	.videos-grid {
		grid-template-columns: 1fr;
	}
	.video-intro-section {
		flex-direction: column;
		gap: 1.5rem;
	}
	.card-img-placeholder {
		height: 150px;
	}
	.location-box.location-with-img {
		flex-direction: column;
		gap: 1.5rem;
		margin-bottom: 1.5rem;
		padding: 1.5rem;
	}
	.location-img-placeholder {
		flex: 1;
		width: 100%;
		height: 200px;
	}
	.experience-item.experience-with-img {
		flex-direction: column;
		gap: 1.5rem;
		margin-bottom: 1.5rem;
		padding: 1.5rem;
	}
	.experience-img-placeholder {
		flex: 1;
		width: 100%;
		height: 180px;
	}
}