@import url("banner.css");

:root {
	--color-primary: #169abb;
	--color-primary-dark: #117a96;
	--color-primary-soft: #e7f6fa;
	--color-navy: #29295a;
	--color-navy-deep: #1d1d42;
	--color-bg: #f3f5f7;
	--color-surface: #ffffff;
	--color-text: #1c1c28;
	--color-muted: #5b5d70;
	--color-border: #dfe3e8;
	--color-on-primary: #ffffff;
	--shadow: 0 8px 24px rgba(41, 41, 90, 0.08);
	--shadow-hover: 0 12px 28px rgba(22, 154, 187, 0.16);
	--radius: 16px;
	--radius-sm: 10px;
	--radius-pill: 999px;
	--space-1: 0.25rem;
	--space-2: 0.5rem;
	--space-3: 0.75rem;
	--space-4: 1rem;
	--space-5: 1.25rem;
	--space-6: 1.5rem;
	--space-8: 2rem;
	--space-12: 3rem;
	--wrap: 72rem;
	--header-h: 4.5rem;
	--font: "Noto Sans HK", "Microsoft JhengHei", sans-serif;
	--focus: 2px solid var(--color-primary);
}

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

html {
	scroll-behavior: smooth;
}

body {
	font-family: var(--font);
	font-size: 1rem;
	line-height: 1.7;
	color: var(--color-text);
	background: var(--color-bg);
	min-height: 100vh;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
}

a {
	color: var(--color-primary-dark);
}

:focus-visible {
	outline: var(--focus);
	outline-offset: 3px;
}

.skip-link {
	position: absolute;
	left: -9999px;
	top: 0;
	z-index: 100;
	padding: var(--space-3) var(--space-4);
	background: var(--color-surface);
	color: var(--color-navy);
	font-weight: 700;
	text-decoration: none;
	border-radius: var(--radius-sm);
}

.skip-link:focus {
	left: var(--space-4);
	top: var(--space-4);
}

address {
	font-style: normal;
}

/* Header */

.top {
	position: sticky;
	top: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-4);
	min-height: var(--header-h);
	padding: var(--space-2) clamp(0.75rem, 3vw, 1.75rem);
	background: var(--color-primary);
	color: var(--color-on-primary);
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.top .container {
	display: flex;
	align-items: center;
	min-width: 0;
}

.top .container > a {
	display: flex;
	align-items: center;
	gap: var(--space-3);
	color: var(--color-on-primary);
	text-decoration: none;
	min-height: 44px;
}

.container .icon,
.top .icon {
	width: 3rem;
	height: 3rem;
	margin: 0;
	border-radius: 10px;
	object-fit: cover;
	background: var(--color-surface);
}

.container .title,
.top .title {
	font-size: clamp(1.15rem, 3.6vw, 1.65rem);
	font-weight: 700;
	letter-spacing: 0.02em;
	white-space: nowrap;
}

.top .pages {
	display: none;
	align-items: center;
	flex-wrap: wrap;
	justify-content: flex-end;
	gap: var(--space-1);
	font-size: 0.95rem;
}

.top a {
	color: var(--color-on-primary);
	text-decoration: none;
}

.pages .buttons {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 44px;
	padding: 0.45rem 0.9rem;
	border-radius: var(--radius-pill);
	font-weight: 700;
	transition: background 0.2s ease;
}

.pages .cur {
	background: var(--color-navy);
}

.pages .not_cur:hover,
.pages .cur:hover {
	background: var(--color-navy-deep);
	text-decoration: none;
	border: 0;
}

.menu_btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 44px;
	background: transparent;
	border: 0;
	color: var(--color-on-primary);
	font-size: 1.85rem;
	cursor: pointer;
	border-radius: var(--radius-sm);
}

.menu_btn:hover {
	background: rgba(0, 0, 0, 0.12);
}

@media (min-width: 1024px) {
	.top .pages {
		display: flex;
	}

	.menu_btn {
		display: none;
	}

	.container .icon,
	.top .icon {
		width: 3.5rem;
		height: 3.5rem;
	}
}

/* Mobile drawer */

.nav-overlay {
	position: fixed;
	inset: 0;
	z-index: 30;
	background: rgba(28, 28, 40, 0.45);
}

.sidebar {
	position: fixed;
	top: 0;
	right: 0;
	z-index: 40;
	display: flex;
	flex-direction: column;
	gap: var(--space-2);
	width: min(18rem, 86vw);
	height: 100%;
	padding: var(--space-6) var(--space-5);
	background: var(--color-primary);
	color: var(--color-on-primary);
	transform: translateX(110%);
	transition: transform 0.35s ease;
	box-shadow: -8px 0 24px rgba(0, 0, 0, 0.18);
}

.sidebar_in {
	transform: translateX(0);
}

.sidebar .space {
	display: none;
}

.sidebar a {
	color: var(--color-on-primary);
	text-decoration: none;
	font-size: 1.1rem;
	font-weight: 700;
}

.sidebar .items {
	display: flex;
	align-items: center;
	min-height: 44px;
	padding: 0.65rem 0.9rem;
	border-radius: var(--radius-pill);
	margin: 0;
}

.sidebar .cur,
.sidebar a[aria-current="page"] .items {
	background: var(--color-navy);
}

.menu-close {
	align-self: flex-end;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 44px;
	margin-bottom: var(--space-4);
	background: transparent;
	border: 0;
	color: var(--color-on-primary);
	font-size: 1.8rem;
	cursor: pointer;
	border-radius: var(--radius-sm);
}

body.nav-open {
	overflow: hidden;
}

@media (min-width: 1024px) {
	.sidebar,
	.nav-overlay {
		display: none;
	}
}

/* Banner */

.banner {
	height: min(42vh, 22rem);
	width: 100%;
	background: url("../source/img/banner/pic1.jpg") center top / cover no-repeat;
	animation: bannerchange 30s linear infinite;
}

@media (min-width: 768px) {
	.banner {
		height: min(52vh, 32rem);
	}
}

@media (prefers-reduced-motion: reduce) {
	.banner {
		animation: none;
	}

	html {
		scroll-behavior: auto;
	}
}

/* Content sections */

.seo-block,
.coop,
.reg_course,
.the_papers {
	padding: clamp(1.75rem, 5vw, 3.5rem) clamp(1rem, 4vw, 2.5rem);
}

.sum_course,
.register,
.swimming_course,
.interview {
	padding: 0 0 var(--space-8);
}

.seo-block,
.coop,
.reg_course,
.the_papers {
	background: var(--color-bg);
}

.seo-block h1,
.seo-block h2,
.seo-block h3,
.reg_course .title,
.sum_course .title,
.swimming_course .title,
.interview .title,
.register .title,
.coop .title {
	color: var(--color-navy);
	font-weight: 700;
	line-height: 1.25;
}

.seo-block h1,
.reg_course > .title,
.sum_course > .title,
.swimming_course > .title,
.interview > .title {
	font-size: clamp(1.7rem, 3.4vw + 0.6rem, 2.5rem);
	margin-bottom: var(--space-4);
	max-width: 40rem;
}

.seo-block h2,
.register .title,
.coop .title,
.swimming_course .download_title {
	font-size: clamp(1.35rem, 2.4vw + 0.5rem, 1.85rem);
	margin: 0 0 var(--space-4);
}

.seo-block h3,
.seo-lead h2,
.seo-lead h3 {
	font-size: 1.15rem;
	margin: var(--space-5) 0 var(--space-2);
	color: var(--color-navy);
}

.seo-block p,
.seo-block li,
.seo-lead p,
.seo-lead li {
	font-size: clamp(0.95rem, 1.1vw + 0.7rem, 1.05rem);
	color: var(--color-muted);
	max-width: 46rem;
}

.seo-block p,
.seo-lead p {
	margin-bottom: var(--space-3);
}

.seo-block ul,
.seo-block ol,
.seo-lead ul,
.seo-lead ol {
	margin: 0 0 var(--space-4) 1.25rem;
}

.seo-lead a,
.faq a,
.seo-block a:not(.course-card):not(.cta-row a) {
	color: var(--color-primary-dark);
}

.seo-lead {
	padding: 0 0 var(--space-6);
}

.highlights {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2);
	margin: var(--space-5) 0 var(--space-4);
	padding: 0;
	list-style: none;
	max-width: none;
}

.highlights li {
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-pill);
	padding: 0.45rem 0.9rem;
	font-size: 0.92rem;
	font-weight: 700;
	color: var(--color-navy);
	box-shadow: none;
}

.cta-row {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-3);
	margin-top: var(--space-5);
}

.cta-row a,
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 44px;
	padding: 0.7rem 1.25rem;
	border-radius: var(--radius-pill);
	background: var(--color-primary);
	color: var(--color-on-primary);
	text-decoration: none;
	font-weight: 700;
	font-size: 0.95rem;
	transition: background 0.2s ease, transform 0.2s ease;
}

.cta-row a:hover,
.btn:hover {
	background: var(--color-primary-dark);
}

.cta-row a.secondary {
	background: var(--color-navy);
}

.cta-row a.secondary:hover {
	background: var(--color-navy-deep);
}

.course-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--space-4);
	margin-top: var(--space-5);
}

.course-card {
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: var(--radius);
	padding: var(--space-6);
	text-decoration: none;
	color: inherit;
	box-shadow: var(--shadow);
	transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover {
	transform: translateY(-3px);
	box-shadow: var(--shadow-hover);
}

.course-card h3 {
	margin: 0 0 var(--space-2);
	color: var(--color-primary-dark);
	font-size: 1.2rem;
}

.course-card p {
	margin: 0;
	max-width: none;
}

@media (min-width: 640px) {
	.course-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.course-grid {
		grid-template-columns: repeat(4, 1fr);
	}
}

/* Partners */

.coop {
	display: block;
	background: var(--color-surface);
	border-block: 1px solid var(--color-border);
}

.coop .title,
.coop .icons {
	max-width: var(--wrap);
	margin-left: auto;
	margin-right: auto;
}

.coop .title {
	margin: 0 0 var(--space-6);
	font-size: clamp(1.35rem, 2.4vw + 0.5rem, 1.85rem);
}

.coop .icons {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(11rem, 100%), 1fr));
	gap: var(--space-4);
}

.icons .container,
.icons a .container {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: var(--space-2);
	min-height: 10rem;
	padding: var(--space-5);
	background: var(--color-bg);
	border-radius: var(--radius);
	text-align: center;
}

.icons a {
	text-decoration: none;
	color: inherit;
}

.icons img,
.icons .icon_one,
.icons .icon_two,
.icons .icon_three,
.icons .icon_four {
	height: 4.5rem;
	width: auto;
	max-width: 8rem;
	margin: 0;
	object-fit: contain;
	opacity: 1;
	transform: none;
	position: static;
	transition: transform 0.4s ease;
}

.icons .show {
	opacity: 1;
	transform: none;
}

.icons .words {
	font-size: 0.95rem;
	font-weight: 700;
	color: var(--color-navy);
	line-height: 1.4;
}

/* FAQ */

.faq details {
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-sm);
	padding: 0.85rem 1rem;
	margin-bottom: var(--space-3);
	max-width: 46rem;
}

.faq summary {
	cursor: pointer;
	font-weight: 700;
	color: var(--color-navy);
	min-height: 44px;
	display: flex;
	align-items: center;
}

.faq details p {
	margin: var(--space-2) 0 0;
}

/* Breadcrumb */

.breadcrumb {
	padding: var(--space-4) clamp(1rem, 4vw, 2.5rem) 0;
	font-size: 0.9rem;
	color: var(--color-muted);
}

.breadcrumb ol {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-2);
	list-style: none;
}

.breadcrumb a {
	color: var(--color-primary-dark);
}

/* Leaflets / papers */

.flex_container {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--space-5);
	max-width: var(--wrap);
}

@media (min-width: 768px) {
	.flex_container {
		grid-template-columns: 1fr 1fr;
	}
}

.flex_container .course_paper,
.flex_container .register_paper {
	width: 100%;
	height: auto;
	border-radius: var(--radius);
	box-shadow: var(--shadow);
	background: var(--color-surface);
}

.download_pdf,
.view_img,
.downloads {
	margin: var(--space-5) 0 0;
	font-size: 1rem;
	font-weight: 700;
}

.swimming_course .download_title {
	margin-top: var(--space-8);
}

/* Footer */

.con_us {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--space-6);
	background: var(--color-navy);
	color: var(--color-on-primary);
	padding: var(--space-8) clamp(1rem, 4vw, 2.5rem) 4.5rem;
}

.con_us .blocks {
	padding: 0;
	width: auto;
	min-width: 0;
	margin: 0;
}

.block_one {
	display: flex;
	flex-direction: column;
	gap: var(--space-1);
}

.block_one .chin_name {
	color: var(--color-on-primary);
	font-size: 1.2rem;
	font-weight: 700;
}

.block_one .eng_name {
	color: #c8c9dc;
	padding: 0;
}

.con_us .title {
	color: var(--color-on-primary);
	font-size: 1.05rem;
	font-weight: 700;
}

.con_us .line {
	height: 2px;
	width: 3rem;
	background: var(--color-primary);
	margin: var(--space-2) 0 var(--space-4);
	border: 0;
}

.con_us .container {
	display: flex;
	align-items: center;
	gap: var(--space-2);
	color: var(--color-on-primary);
}

.con_us .bx {
	margin: 0;
	font-size: 1.35rem;
	color: var(--color-primary);
}

.block_two .bx {
	color: var(--color-primary);
	font-size: 1.35rem;
}

.block_two a,
.block_three a,
.con_us a.contact-link {
	color: var(--color-on-primary);
	text-decoration: none;
}

.con_us a:hover {
	text-decoration: underline;
}

.block_two .container_four {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-3);
	margin-top: var(--space-4);
}

.block_two .small_container {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 44px;
	margin: 0;
	padding: var(--space-2) var(--space-3);
	border-radius: var(--radius-sm);
	background: rgba(255, 255, 255, 0.08);
	color: var(--color-on-primary);
	font-size: 0.8rem;
}

.block_three .address,
.hours-list {
	color: #d7d8ea;
	line-height: 1.7;
}

.hours-list div {
	margin: 0.2rem 0;
}

@media (min-width: 768px) {
	.con_us {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.con_us {
		grid-template-columns: 1.1fr 1.2fr 1fr 1fr;
		padding-bottom: var(--space-12);
	}
}

@media (pointer: coarse) {
	.pages .buttons,
	.sidebar .items,
	.cta-row a {
		padding-block: 0.85rem;
	}
}