/*
 * Trang "Giới Thiệu".
 * Chỉ được nạp bởi page-gioi-thieu.php; mọi selector nằm trong .about-page
 * và chỉ dùng biến màu/khoảng cách có sẵn trong assets/css/main.css.
 */

.about-page {
	padding-bottom: 64px;
}

.about-page .ap-btn {
	transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.about-page .ap-btn:active {
	transform: translateY(1px) scale(0.98);
}

/* Hero: chữ căn trái, lối vào theo sàn ở cột phải */
.about-page__hero {
	padding: 48px 0 40px;
	background: var(--ap-white);
	border-bottom: 1px solid var(--ap-surface-high);
}

.about-page__hero-inner {
	display: grid;
	max-width: 1120px;
	grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
	gap: 48px;
	align-items: center;
}

.about-page__eyebrow {
	margin: 0 0 8px;
	color: var(--ap-primary);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.about-page__title {
	margin: 0 0 16px;
	color: var(--ap-text);
	font-size: clamp(30px, 3.4vw, 42px);
	font-weight: 800;
	line-height: 1.15;
	letter-spacing: -0.02em;
}

.about-page__lead {
	max-width: 56ch;
	margin: 0 0 24px;
	color: var(--ap-muted);
	font-size: 17px;
	line-height: 1.7;
}

.about-page__actions,
.about-page__contact-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
}

.about-page__sources {
	display: grid;
	gap: 12px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.about-page__source {
	display: flex;
	align-items: center;
	gap: 16px;
	padding: 14px 16px;
	border: 1px solid var(--ap-surface-high);
	border-radius: var(--ap-radius);
	background: var(--ap-surface);
	color: var(--ap-text);
	text-decoration: none;
	transition: border-color 160ms ease, transform 160ms ease;
}

.about-page__source:hover,
.about-page__source:focus-visible {
	border-color: var(--ap-primary);
	transform: translateX(4px);
}

.about-page__source img {
	flex: none;
	width: 56px;
	height: 56px;
	border-radius: var(--ap-radius);
	background: var(--ap-white);
	object-fit: contain;
}

.about-page__source-text {
	display: grid;
	flex: 1 1 auto;
	gap: 2px;
	min-width: 0;
}

.about-page__source-text strong {
	font-size: 17px;
}

.about-page__source-text span {
	color: var(--ap-muted);
	font-size: 14px;
	line-height: 1.5;
}

.about-page__source > .material-symbols-outlined {
	flex: none;
	color: var(--ap-primary);
}

/* Nội dung */
.about-page__body {
	max-width: 1120px;
	padding-top: 40px;
}

.about-page__section {
	padding: 40px 0;
	border-top: 1px solid var(--ap-surface-high);
}

.about-page__section:first-child {
	padding-top: 0;
	border-top: 0;
}

.about-page__section h2,
.about-page__contact h2 {
	margin: 0 0 16px;
	color: var(--ap-text);
	font-size: clamp(22px, 2.2vw, 28px);
	font-weight: 800;
	line-height: 1.25;
	letter-spacing: -0.01em;
}

.about-page__section h3 {
	margin: 0 0 8px;
	color: var(--ap-text);
	font-size: 17px;
	font-weight: 700;
	line-height: 1.35;
}

.about-page__section p {
	max-width: 68ch;
	margin: 0 0 16px;
	color: var(--ap-muted);
	line-height: 1.75;
}

/* Giới thiệu + lưu ý */
.about-page__intro {
	display: grid;
	grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
	gap: 40px;
	align-items: start;
}

.about-page__notice {
	padding: 20px 22px;
	border-left: 3px solid var(--ap-secondary);
	border-radius: 0 var(--ap-radius) var(--ap-radius) 0;
	background: var(--ap-surface-low);
}

.about-page__notice ul {
	display: grid;
	gap: 10px;
	margin: 0;
	padding-left: 18px;
	color: var(--ap-text);
	font-size: 15px;
	line-height: 1.65;
}

.about-page__notice li::marker {
	color: var(--ap-secondary);
}

/* Chức năng: lưới bento 4 ô */
.about-page__bento {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 16px;
}

.about-page__tile {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	padding: 24px;
	border: 1px solid var(--ap-surface-high);
	border-radius: var(--ap-radius);
	background: var(--ap-white);
}

.about-page__tile p {
	margin-bottom: 12px;
	font-size: 15px;
	line-height: 1.65;
}

.about-page__tile.is-review {
	grid-row: span 2;
	border-color: #ffd9bf;
	background: #fff4ec;
}

.about-page__tile.is-blog {
	grid-column: span 2;
}

.about-page__tile.is-catalog {
	background: var(--ap-surface-low);
}

.about-page__tile.is-qr {
	border-color: var(--ap-inverse);
	background: var(--ap-inverse);
}

.about-page__tile.is-qr h3,
.about-page__tile.is-qr .about-page__link {
	color: var(--ap-white);
}

.about-page__tile.is-qr p {
	color: rgba(255, 255, 255, 0.78);
}

.about-page__tile .about-page__icon {
	display: grid;
	place-items: center;
	width: 44px;
	height: 44px;
	margin-bottom: 16px;
	border-radius: var(--ap-radius);
	background: var(--ap-white);
	color: var(--ap-primary);
	font-size: 24px;
}

.about-page__tile.is-blog .about-page__icon,
.about-page__tile.is-catalog .about-page__icon {
	background: var(--ap-surface-container);
	color: var(--ap-secondary);
}

.about-page__tile.is-qr .about-page__icon {
	background: rgba(255, 255, 255, 0.1);
	color: var(--ap-white);
}

.about-page__link {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	margin-top: auto;
	padding-top: 4px;
	color: var(--ap-primary);
	font-weight: 700;
	text-decoration: none;
}

.about-page__link .material-symbols-outlined {
	font-size: 18px;
	transition: transform 160ms ease;
}

.about-page__link:hover .material-symbols-outlined,
.about-page__link:focus-visible .material-symbols-outlined {
	transform: translateX(3px);
}

.about-page__chips {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin: 0 0 16px;
	padding: 0;
	list-style: none;
}

.about-page__chips a {
	display: inline-block;
	padding: 6px 12px;
	border: 1px solid var(--ap-surface-high);
	border-radius: var(--ap-radius);
	color: var(--ap-text);
	font-size: 14px;
	text-decoration: none;
	transition: border-color 160ms ease, color 160ms ease;
}

.about-page__chips a:hover,
.about-page__chips a:focus-visible {
	border-color: var(--ap-primary);
	color: var(--ap-primary);
}

/* Cách dùng: dòng 4 bước nối tiếp */
.about-page__flow {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 24px;
	margin: 0;
	padding: 0;
	list-style: none;
	counter-reset: about-flow;
}

.about-page__flow li {
	position: relative;
	padding-top: 52px;
	counter-increment: about-flow;
}

.about-page__flow li::before {
	content: counter(about-flow);
	position: absolute;
	top: 0;
	left: 0;
	display: grid;
	place-items: center;
	width: 36px;
	height: 36px;
	border: 2px solid var(--ap-primary);
	border-radius: 50%;
	background: var(--ap-white);
	color: var(--ap-primary);
	font-weight: 800;
	font-variant-numeric: tabular-nums;
}

.about-page__flow li:not(:last-child)::after {
	content: "";
	position: absolute;
	top: 18px;
	left: 48px;
	right: -12px;
	height: 2px;
	background: var(--ap-surface-high);
}

.about-page__flow p {
	margin: 0;
	font-size: 15px;
	line-height: 1.65;
}

.about-page__extra {
	padding: 32px 0;
	border-top: 1px solid var(--ap-surface-high);
}

/* Liên hệ cuối trang */
.about-page__contact {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: 24px;
	align-items: center;
	margin-top: 16px;
	padding: 28px 32px;
	border-radius: var(--ap-radius);
	background: var(--ap-inverse);
	color: var(--ap-white);
}

.about-page__contact h2 {
	margin-bottom: 6px;
	color: var(--ap-white);
	font-size: 22px;
}

.about-page__contact p {
	margin: 0;
	color: rgba(255, 255, 255, 0.78);
	line-height: 1.7;
}

.about-page__contact p a {
	color: var(--ap-white);
	font-weight: 700;
	text-decoration: underline;
	text-underline-offset: 3px;
	overflow-wrap: anywhere;
}

/* Hiệu ứng xuất hiện nhẹ cho lối vào theo sàn */
@media (prefers-reduced-motion: no-preference) {
	.about-page__sources li {
		animation: about-page-rise 420ms cubic-bezier(0.16, 1, 0.3, 1) both;
		animation-delay: calc(var(--item-index, 0) * 80ms + 60ms);
	}

	@keyframes about-page-rise {
		from {
			opacity: 0;
			transform: translateY(8px);
		}
		to {
			opacity: 1;
			transform: none;
		}
	}
}

@media (prefers-reduced-motion: reduce) {
	.about-page .ap-btn,
	.about-page__source,
	.about-page__chips a,
	.about-page__link .material-symbols-outlined {
		transition: none;
	}
}

/* Responsive */
@media (max-width: 991px) {
	.about-page__hero-inner,
	.about-page__intro {
		grid-template-columns: minmax(0, 1fr);
		gap: 28px;
	}

	.about-page__bento {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.about-page__tile.is-review {
		grid-row: auto;
	}

	.about-page__tile.is-blog {
		grid-column: auto;
	}

	.about-page__flow {
		grid-template-columns: repeat(2, minmax(0, 1fr));
		row-gap: 32px;
	}

	.about-page__flow li:nth-child(2n)::after {
		display: none;
	}
}

@media (max-width: 767px) {
	.about-page__hero {
		padding: 28px 0 24px;
	}

	.about-page__lead {
		font-size: 16px;
	}

	.about-page__body {
		padding-top: 28px;
	}

	.about-page__section {
		padding: 28px 0;
	}

	.about-page__bento,
	.about-page__contact {
		grid-template-columns: minmax(0, 1fr);
	}

	.about-page__tile {
		padding: 20px;
	}

	.about-page__flow {
		grid-template-columns: minmax(0, 1fr);
		gap: 20px;
	}

	.about-page__flow li {
		padding: 4px 0 0 52px;
	}

	.about-page__flow li::after,
	.about-page__flow li:nth-child(2n)::after {
		display: block;
	}

	.about-page__flow li:not(:last-child)::after {
		top: 44px;
		bottom: -16px;
		left: 17px;
		right: auto;
		width: 2px;
		height: auto;
	}

	.about-page__contact {
		padding: 22px 20px;
	}

	.about-page__actions .ap-btn,
	.about-page__contact-actions .ap-btn {
		flex: 1 1 auto;
		justify-content: center;
	}
}