/* ============================================
   PAGE: Thac Si (Masters Programs)
   Breakpoints: Desktop (default), Tablet (max-width: 1199px), Mobile (max-width: 575px)
   ============================================ */

/* ========== SECTION: Hero Thac Si ========== */
.hero-section--thacsi .hero-section__bg {
	background-image: url("/assets/images/hero_bg.png");
}

/* ========== SECTION: Program Introduction ========== */
.program-intro {
	padding: var(--sp-7) 0 0;
	background-color: var(--color-light);
}

.program-intro__image-wrapper {
	position: relative;
	padding: var(--sp-4) 0;
}

.program-intro__image {
	width: 55.3rem; /* 553px */
	height: 36.6rem; /* 366px */
	border-radius: var(--radius-20);
	object-fit: cover;
}

.program-intro__decoration {
	position: absolute;
	bottom: 0;
	left: 0;
	width: 16.2rem; /* 162px */
	height: 10.5rem; /* 105px */
	background-image: url("/assets/images/program_decorator_1.png");
	background-size: cover;
	background-position: center;
	pointer-events: none;
}

.program-intro__content {
	padding: var(--sp-4) 0;
}

.program-intro__title {
	display: flex;
	flex-direction: column;
	gap: var(--sp-3);
	margin-bottom: var(--sp-4);
}

.program-intro__title-sub {
	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;
}

.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(--brand-primary);
	text-transform: uppercase;
}

.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: 0;
}

/* ========== SECTION: Section Headers ========== */
.section-header {
	margin-bottom: var(--sp-7);
}

.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;
}

/* ========== SECTION: Program Cards ========== */
.program-cards-section {
	padding: var(--sp-8) 0;
	background-color: var(--color-light);
}

.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;
}

/* Program Pagination - visibility controlled by Bootstrap d-none/d-md-flex classes */
.program-pagination {
	display: none;
	align-items: center;
	justify-content: 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: none;
	background-color: transparent;
	background-size: cover;
	background-position: center;
	background-repeat: no-repeat;
	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__btn--prev,
.program-pagination__btn--next {
	background-color: var(--gray-200, #e5e7eb);
	border-radius: 50%;
}

.program-pagination__btn--active {
	background-color: var(--color-primary, #1e40af);
	border-radius: 50%;
	color: var(--color-light);
}

.program-pagination__btn:not(.program-pagination__btn--prev):not(
		.program-pagination__btn--next
	):not(.program-pagination__btn--active) {
	background-color: var(--gray-200, #e5e7eb);
	border-radius: 50%;
}

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

.program-pagination__btn:hover:not(:disabled) {
	opacity: 0.8;
}

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

/* 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);
}

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

/* ================================================
   TABLET (max-width: 1199px)
   ================================================ */
@media (max-width: 1199px) {
	/* Program Intro - Tablet */
	.program-intro {
		padding: var(--sp-6) 0 0;
	}

	.program-intro__image {
		width: 100%;
		max-width: 48rem; /* 480px */
		height: auto;
	}

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

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

	/* Section Header - Tablet */
	.section-header__subtitle {
		font-size: var(--section-subtitle-tablet);
	}

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

	/* Program Cards - Tablet: 2 columns */
	.program-cards-section {
		padding: var(--sp-7) 0;
	}

	.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) {
	/* Program Intro - Mobile: content on top, image below */
	.program-intro {
		padding: var(--sp-5) 0 0;
	}

	.program-intro .row {
		flex-direction: column-reverse;
	}

	.program-intro__image-wrapper {
		padding: 0;
	}

	.program-intro__image {
		width: 100%;
		height: auto;
		border-radius: 0;
	}

	.program-intro__decoration {
		display: none;
	}

	.program-intro__content {
		padding: var(--sp-4) 0;
	}

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

	.program-intro__description {
		font-size: var(--section-description-mobile);
	}

	/* Section Header - Mobile */
	.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 Cards - Mobile: Horizontal slider */
	.program-cards-section {
		padding: var(--sp-6) 0;
	}

	.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;
	}
}