/* ============================================
   PAGE: Tiến Sĩ
   Breakpoints: Desktop (default), Tablet (max-width: 1199px), Mobile (max-width: 575px)
   ============================================ */

/* Hero Section */
.tiensi-hero {
	width: 100%;
	height: 50rem; /* 500px */
	background-image: url("/assets/images/hero_bg.png");
	background-size: cover;
	background-position: center;
	background-repeat: no-repeat;
}

/* Program Introduction - Tiến Sĩ Variant */
.program-intro--tiensi {
	padding-top: var(--sp-7);
	background-color: var(--color-light);
}

/* Program Cards Section */
.program-cards-section {
	padding: var(--sp-7) 0;
	background-color: var(--color-light);
}

/* Program Cards Grid */
.program-cards-grid {
	display: flex;
	flex-wrap: wrap;
	gap: var(--sp-4);
	padding-top: var(--sp-4);
}

.program-cards-grid .program-card-item {
	flex: 0 0 calc(33.333% - var(--sp-4) * 2 / 3);
	max-width: calc(33.333% - var(--sp-4) * 2 / 3);
}

/* Hidden items in pagination */
.program-cards-grid .program-card-item.pagination-hidden {
	display: none !important;
}

/* Slider Navigation - Hidden on desktop */
.program-slider-nav {
	display: none;
}

.program-intro--tiensi .program-intro__image-wrapper {
	position: relative;
	border-radius: var(--radius-20);
	overflow: visible;
}

.program-intro--tiensi .program-intro__image {
	width: 100%;
	height: auto;
	border-radius: var(--radius-20);
	display: block;
}

.program-intro--tiensi .program-intro__play-button {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 7rem; /* 70px */
	height: 7rem; /* 70px */
	cursor: pointer;
	transition: transform var(--transition-base);
}

.program-intro--tiensi .program-intro__play-button:hover {
	transform: translate(-50%, -50%) scale(1.1);
}

.program-intro--tiensi .program-intro__play-button img {
	width: 100%;
	height: 100%;
	object-fit: contain;
}

.program-intro--tiensi .program-intro__content {
	padding-left: var(--sp-5);
}

.program-intro--tiensi .program-intro__title {
	display: flex;
	flex-direction: column;
	gap: var(--sp-2);
	margin-bottom: var(--sp-4);
}

.program-intro--tiensi .program-intro__title-main {
	font-family: var(--font-family-heading);
	font-size: var(--section-title);
	font-weight: var(--fw-bold);
	line-height: var(--lh-heading-tight);
	color: var(--color-primary);
	text-transform: uppercase;
}

.program-intro--tiensi .program-intro__title-sub {
	font-family: var(--font-family-heading);
	font-size: var(--fs-600);
	font-weight: var(--fw-bold);
	line-height: var(--lh-heading-tight);
	color: var(--color-primary);
	text-transform: uppercase;
}

.program-intro--tiensi .program-intro__description {
	font-family: var(--font-family-heading);
	font-size: var(--section-description);
	font-weight: var(--fw-regular);
	line-height: 1.57;
	color: var(--gray-900);
	margin-bottom: var(--sp-3);
}

/* ================================================
   TABLET (max-width: 1199px)
   ================================================ */
@media (max-width: 1199px) {
	.tiensi-hero {
		height: 40rem; /* 400px */
	}

	.program-intro--tiensi {
		padding: var(--sp-6) 0;
	}

	.program-intro--tiensi .program-intro__description {
		font-size: var(--section-description-tablet);
	}

	.program-intro--tiensi .program-intro__content {
		padding-left: 0;
		margin-top: var(--sp-4);
	}

	.program-intro--tiensi .program-intro__title-main,
	.program-intro--tiensi .program-intro__title-sub {
		font-size: var(--section-title-tablet);
	}

	.program-cards-section {
		padding: var(--sp-6) 0;
	}

	/* Program Cards - Tablet: 2 columns */
	.program-cards-grid .program-card-item {
		flex: 0 0 calc(50% - var(--sp-4) / 2);
		max-width: calc(50% - var(--sp-4) / 2);
	}
}

/* ================================================
   MOBILE (max-width: 575px)
   ================================================ */
@media (max-width: 575px) {
	.tiensi-hero {
		height: 30rem; /* 300px */
	}

	.program-intro--tiensi {
		padding: var(--sp-5) 0;
	}

	.program-intro--tiensi .program-intro__title-main,
	.program-intro--tiensi .program-intro__title-sub {
		font-size: var(--section-title-mobile);
	}

	.program-intro--tiensi .program-intro__description {
		font-size: var(--section-description-tablet);
	}

	.program-cards-section {
		padding: var(--sp-5) 0;
	}

	/* Program Cards - Mobile: Horizontal slider */
	.program-cards-grid {
		flex-wrap: nowrap;
		overflow-x: auto;
		scroll-snap-type: x mandatory;
		-webkit-overflow-scrolling: touch;
		scrollbar-width: none;
		-ms-overflow-style: none;
		gap: var(--sp-3);
		margin: 0 -1.6rem; /* -16px */
		padding: var(--sp-4) 1.6rem 0; /* 16px */
	}

	.program-cards-grid::-webkit-scrollbar {
		display: none;
	}

	.program-cards-grid .program-card-item {
		flex: 0 0 calc(100% - 3.2rem); /* 32px */
		max-width: calc(100% - 3.2rem); /* 32px */
		min-width: calc(100% - 3.2rem); /* 32px */
		scroll-snap-align: center;
	}

	/* Show Slider Navigation on mobile */
	.program-slider-nav {
		display: flex;
		justify-content: center;
		align-items: center;
		gap: var(--sp-2);
		margin-top: var(--sp-4);
	}

	.program-slider-nav__btn {
		width: 4rem; /* 40px */
		height: 4rem; /* 40px */
		border-radius: 50%;
		background-color: var(--gray-200, #e5e7eb);
		border: none;
		display: flex;
		align-items: center;
		justify-content: center;
		cursor: pointer;
		transition: all var(--transition-base);
	}

	.program-slider-nav__btn:hover:not(:disabled) {
		background-color: var(--gray-300);
	}

	.program-slider-nav__btn:disabled {
		opacity: 0.5;
		cursor: not-allowed;
	}

	.program-slider-nav__btn img {
		width: 1.1rem; /* 11px */
		height: 1rem; /* 10px */
		object-fit: contain;
	}
}

/* Program Advantages Section */
.program-advantages {
	padding: var(--sp-7) 0;
	background-color: var(--color-primary);
	color: var(--color-light);
	position: relative;
	overflow: hidden;
}

.program-advantages__title {
	font-family: var(--font-family-heading);
	font-size: var(--section-title);
	font-weight: var(--fw-bold);
	line-height: var(--lh-heading);
	color: var(--color-light);
	text-align: center;
	text-transform: capitalize;
	margin-bottom: var(--sp-6);
}

.program-advantages__stage {
	position: relative;
	width: 100%;
	max-width: 120rem; /* 1200px */
	margin: 0 auto;
	aspect-ratio: 2/1;
}

.program-advantages__svg {
	width: 100%;
	height: 100%;
	display: block;
}

/* SVG Elements */
.ring {
	fill: none;
	stroke: var(--color-light);
	stroke-width: 1.6;
}

.poly {
	fill: none;
	stroke: var(--color-light);
	stroke-width: 1.4;
	opacity: 0.9;
}

.dot-big {
	fill: var(--color-light);
	stroke: var(--color-light);
	stroke-width: 1;
}

.dot-small {
	fill: transparent;
	stroke: var(--color-light);
	stroke-width: 1.2;
}

.dot-medium {
	fill: transparent;
	stroke: var(--color-light);
	stroke-width: 1.4;
}

/* Items wrapper - transparent on desktop */
.program-advantages__items-wrapper {
	display: contents;
}

/* Advantage text items positioned around the SVG */
.program-advantages__item {
	position: absolute;
	max-width: 28rem; /* 280px */
}

.program-advantages__text {
	font-family: var(--font-family-heading);
	font-size: var(--fs-300);
	font-weight: var(--fw-medium);
	line-height: 1.5;
	color: var(--color-light);
	margin: 0;
	text-align: center;
}

/* Position items around the circle */
.program-advantages__item--1 {
	top: 10%;
	left: 8%;
	text-align: right;
}

.program-advantages__item--2 {
	top: 10%;
	right: 8%;
	text-align: left;
}

.program-advantages__item--3 {
	top: 40%;
	left: 2%;
	text-align: right;
}

.program-advantages__item--4 {
	top: 40%;
	right: 2%;
	text-align: left;
}

.program-advantages__item--5 {
	bottom: 10%;
	left: 8%;
	text-align: right;
}

.program-advantages__item--6 {
	bottom: 10%;
	right: 8%;
	text-align: left;
}

@media (max-width: 1199px) {
	.program-advantages {
		padding: var(--sp-6) 0;
	}

	.program-advantages__title {
		font-size: var(--section-title-tablet);
		margin-bottom: var(--sp-5);
	}

	/* Stage: flex column để SVG và items xếp dọc */
	.program-advantages__stage {
		display: block;
		text-align: center;
		position: relative;
		aspect-ratio: auto;
	}

	.program-advantages__svg {
		width: 100%;
		max-width: 60rem; /* 600px */
		margin: 0 auto var(--sp-4);
	}

	/* Items wrapper: căn giữa nhưng text thẳng hàng trái */
	.program-advantages__items-wrapper {
		display: inline-block;
		text-align: left;
	}

	/* Items: reset position, hiển thị dạng list */
	.program-advantages__item {
		position: static !important;
		max-width: 100%;
		text-align: left;
		margin-bottom: var(--sp-3);
	}

	.program-advantages__text {
		text-align: left;
	}

	.program-advantages__text::before {
		content: "• ";
		color: var(--color-light);
		font-weight: bold;
	}

	/* Hide mobile list - use stage items instead */
	.program-advantages__items-list {
		display: none;
	}
}

@media (max-width: 575px) {
	.program-advantages {
		padding: var(--sp-5) 0;
	}

	.program-advantages__title {
		font-size: var(--section-title-mobile);
		margin-bottom: var(--sp-4);
	}

	/* Stage: flex column để SVG và items xếp dọc */
	.program-advantages__stage {
		display: flex;
		flex-direction: column;
		align-items: flex-start;
		width: 100vw;
		margin-left: calc(-50vw + 50%);
		position: relative;
	}

	.program-advantages__svg {
		width: 95%;
		height: auto;
		margin: 0 auto var(--sp-4);
		display: block;
	}

	/* Items: reset position, hiển thị dạng list */
	.program-advantages__item {
		position: static !important;
		max-width: 100%;
		text-align: left;
		padding: 0 1.6rem; /* 16px */
		margin-bottom: var(--sp-3);
	}

	.program-advantages__text {
		font-size: var(--fs-body-sm);
		text-align: left;
	}

	.program-advantages__text::before {
		content: "• ";
		color: var(--color-light);
		font-weight: bold;
	}

	/* Hide mobile list - use stage items instead */
	.program-advantages__items-list {
		display: none;
	}
}

/* Scholarship Policy Section */
.scholarship-policy {
	padding: var(--sp-7) 0;
	background-color: var(--color-light);
}

.scholarship-policy__title {
	font-family: var(--font-family-body);
	font-size: var(--section-title);
	font-weight: var(--fw-bold);
	line-height: var(--lh-heading-tight);
	color: var(--color-primary);
	text-align: center;
	text-transform: capitalize;
	margin-bottom: var(--sp-6);
}

.scholarship-policy__grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--sp-3);
	max-width: 120rem; /* 1200px */
	margin: 0 auto;
}

.scholarship-policy__item {
	background-color: var(--color-light);
	border-radius: var(--radius-10);
	padding: var(--sp-4);
	box-shadow: var(--shadow-1);
	display: flex;
	align-items: center;
	gap: var(--sp-3);
	min-height: 9.1rem; /* 91px */
	cursor: pointer;
	transition: all var(--transition-base);
}

.scholarship-policy__item:hover {
	transform: translateY(-0.5rem); /* -5px */
	box-shadow: var(--shadow-2);
}

.scholarship-policy__item--primary {
	background-color: var(--color-secondary);
}

.scholarship-policy__item--primary .scholarship-policy__text {
	color: var(--color-light);
}

.scholarship-policy__item--wide {
	grid-column: 1 / -1;
	max-width: 79.4rem; /* 794px */
	margin: 0 auto;
}

.scholarship-policy__icon {
	width: 2.4rem; /* 24px */
	height: 2.4rem; /* 24px */
	flex-shrink: 0;
	margin-left: auto;
	order: 2;
	background-color: var(--color-primary);
	color: var(--color-light);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
}

.scholarship-policy__icon svg {
	width: 1.4rem; /* 14px */
	height: 1.4rem; /* 14px */
}

.scholarship-policy__item--primary .scholarship-policy__icon {
	background-color: var(--color-light);
	color: var(--color-secondary);
}

.scholarship-policy__text {
	font-family: var(--font-family-heading);
	font-size: var(--fs-300);
	font-weight: var(--fw-semibold);
	line-height: 1.5;
	color: var(--gray-900);
	margin: 0;
	text-align: center;
	flex: 1;
	order: 1;
}

@media (max-width: 1199px) {
	.scholarship-policy {
		padding: var(--sp-6) 0;
	}

	.scholarship-policy__title {
		font-size: var(--section-title-tablet);
		margin-bottom: var(--sp-5);
	}
}

@media (max-width: 575px) {
	.scholarship-policy {
		padding: var(--sp-5) 0;
	}

	.scholarship-policy__title {
		font-size: var(--section-title-mobile);
		text-align: left;
		margin-bottom: var(--sp-4);
	}

	.scholarship-policy__grid {
		grid-template-columns: 1fr;
		gap: var(--sp-3);
	}

	.scholarship-policy__item {
		padding: var(--sp-3);
	}

	.scholarship-policy__item--wide {
		grid-column: 1;
	}

	.scholarship-policy__text {
		font-size: var(--fs-200);
	}
}

/* Training Format Section */
.training-format {
	padding: var(--sp-7) 0;
	background-color: var(--color-primary);
	color: var(--color-light);
	position: relative;
	overflow: hidden;
}

.training-format::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	width: 18.2rem; /* 182px */
	height: 12.3rem; /* 123px */
	background-image: url("/assets/images/decorations/training-format-top.png");
	background-size: cover;
	background-repeat: no-repeat;
	z-index: 0;
}

.training-format::after {
	content: "";
	position: absolute;
	bottom: 0;
	right: 0;
	width: 26.8rem; /* 268px */
	height: 12.7rem; /* 127px */
	background-image: url("/assets/images/decorations/training-format-bottom.png");
	background-size: cover;
	background-repeat: no-repeat;
	z-index: 0;
}

.training-format .container {
	position: relative;
	z-index: 1;
}

.training-format .row {
	align-items: stretch;
}

.training-format .col-lg-6 {
	display: flex;
	flex-direction: column;
}

.training-format__content {
	padding-right: var(--sp-5);
	flex: 1;
}

.training-format__title {
	font-family: var(--font-family-heading);
	font-size: var(--section-title);
	font-weight: var(--fw-bold);
	line-height: var(--lh-heading-tight);
	color: var(--color-light);
	text-align: center;
	margin-bottom: var(--sp-6);
}

.training-format__section {
	margin-bottom: var(--sp-5);
}

.training-format__subtitle {
	font-family: var(--font-family-heading);
	font-size: var(--section-subtitle);
	font-weight: var(--fw-bold);
	line-height: 3rem; /* 30px */
	color: var(--color-light);
	margin-bottom: var(--sp-2);
}

.training-format__number {
	font-weight: var(--fw-bold);
}

.training-format__list {
	list-style: none;
	padding: 0;
	margin: 0;
	margin-left: var(--sp-3);
}

.training-format__list li {
	font-family: var(--font-family-heading);
	font-size: var(--fs-300);
	font-weight: var(--fw-regular);
	line-height: 1.57;
	color: var(--color-light);
	margin-bottom: var(--sp-2);
	position: relative;
	padding-left: var(--sp-3);
}

.training-format__list li::before {
	content: "•";
	position: absolute;
	left: 0;
	color: var(--color-light);
	font-size: 1.8rem; /* 18px */
	line-height: 2.2rem; /* 22px */
}

.training-format__image-wrapper {
	position: relative;
	height: 100%;
	flex: 1;
	display: flex;
}

.training-format__image {
	width: 100%;
	height: 100%;
	border-radius: var(--radius-20);
	display: block;
	object-fit: cover;
}

@media (max-width: 1199px) {
	.training-format {
		padding: var(--sp-6) 0;
	}

	.training-format__content {
		padding-right: 0;
		margin-bottom: var(--sp-5);
	}

	.training-format__title {
		font-size: var(--section-title-tablet);
		margin-bottom: var(--sp-4);
	}

	.training-format__subtitle {
		font-size: var(--section-subtitle-tablet);
	}

	.training-format::before,
	.training-format::after {
		opacity: 0.3;
	}
}

@media (max-width: 575px) {
	.training-format {
		padding: var(--sp-5) 0;
		background-color: transparent;
		color: var(--gray-900);
	}

	/* Hide decorations on mobile */
	.training-format::before,
	.training-format::after {
		display: none;
	}

	/* Title: left-align với font size phù hợp */
	.training-format__title {
		font-size: var(--section-title-mobile);
		text-align: left;
		color: var(--brand-primary);
		margin-bottom: var(--sp-4);
	}

	/* Reorder: image lên đầu dưới title */
	.training-format .row {
		flex-direction: column;
	}

	.training-format .col-lg-6:last-child {
		order: -1;
		margin-bottom: var(--sp-4);
	}

	.training-format__content {
		padding-right: 0;
	}

	.training-format__image-wrapper {
		height: auto;
	}

	.training-format__image {
		height: auto;
		border-radius: var(--radius-10);
	}

	/* Update text colors for light background */
	.training-format__subtitle {
		font-size: var(--section-subtitle-mobile);
		color: var(--gray-900);
	}

	.training-format__list li {
		color: var(--gray-900);
	}

	.training-format__list li::before {
		color: var(--gray-900);
	}
}

/* Section Header - Reusable */
.section-header {
	margin-bottom: var(--sp-6);
}

.section-header__subtitle {
	font-family: var(--font-family-heading);
	font-size: var(--section-subtitle);
	font-weight: var(--fw-semibold);
	line-height: 1.2;
	color: var(--brand-secondary);
	text-transform: capitalize;
	margin-bottom: var(--sp-2);
}

.section-header__title {
	font-family: var(--font-family-heading);
	font-size: var(--section-title);
	font-weight: var(--fw-bold);
	line-height: var(--lh-heading-tight);
	color: var(--brand-primary);
	text-transform: uppercase;
	margin: 0;
}

@media (max-width: 1199px) {
	.section-header__subtitle {
		font-size: var(--section-subtitle-tablet);
	}

	.section-header__title {
		font-size: var(--section-title-tablet);
	}
}

@media (max-width: 575px) {
	.section-header {
		margin-bottom: var(--sp-4);
	}

	.section-header__subtitle {
		font-size: var(--section-subtitle-mobile);
		text-align: left;
	}

	.section-header__title {
		font-size: var(--section-title-mobile);
		text-align: left;
	}
}

/* Program Pagination Styles - visibility controlled by Bootstrap d-none/d-md-flex classes */
.program-pagination {
	display: none;
	justify-content: center;
	align-items: center;
	gap: 0.7rem; /* 7px */
	margin-top: var(--sp-6);
}

/* Enable flex display when Bootstrap's d-md-flex is applied */
.program-pagination.d-md-flex {
	display: none;
}

@media (min-width: 768px) {
	.program-pagination.d-md-flex {
		display: flex !important;
	}
}

.program-pagination__btn {
	width: 4rem; /* 40px */
	height: 4rem; /* 40px */
	border-radius: 50%;
	border: none;
	background-color: var(--gray-200, #e5e7eb);
	color: var(--gray-900);
	font-family: var(--font-family-heading);
	font-size: var(--fs-400);
	font-weight: var(--fw-regular);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: all var(--transition-base);
}

.program-pagination__btn:hover:not(:disabled) {
	background-color: var(--gray-300);
}

.program-pagination__btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.program-pagination__btn img {
	width: 1.1rem; /* 11px */
	height: 1rem; /* 10px */
}

/* Pagination Page Items (dynamically generated) */
.program-pagination__item {
	width: 4rem; /* 40px */
	height: 4rem; /* 40px */
	border: none;
	border-radius: 50%;
	background-color: var(--gray-200, #e5e7eb);
	cursor: pointer;
	transition: all var(--transition-base);
	display: flex;
	align-items: center;
	justify-content: center;
	font-family: var(--font-family-heading);
	font-size: var(--fs-400);
	font-weight: var(--fw-regular);
	line-height: 1.2;
	color: var(--gray-900);
}

.program-pagination__item:hover {
	background-color: var(--gray-300);
}

.program-pagination__item--active {
	background-color: var(--brand-primary);
	color: var(--color-light);
}

.program-pagination__item--active:hover {
	background-color: var(--brand-primary);
	color: var(--color-light);
}