/* ============================================================
 * LeafYui Official Website
 * style.css
 * ------------------------------------------------------------
 * Step 3: ブランドカラーと基本デザイン
 * ============================================================ */

/* ブランドカラー */
:root {
	--color-primary: #1F4D3A;
	--color-sage: #A7C4A0;
	--color-warm-gray: #B7B2A7;
	--color-white: #FFFFFF;
	--color-gold: #D4B574;

	--color-text: #193D30;
	--color-background: #F8F9F5;
	/* 共通レイアウト */
	--content-max-width: 1100px;
}

/* 基本設定 */
* {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background: var(--color-background);
	color: var(--color-text);
	font-family:
		"Noto Sans JP",
		"Yu Gothic",
		"Meiryo",
		sans-serif;
	line-height: 1.8;
}

/* メインビジュアル */

/* ============================================================
 * Step 6: Hero Background
 * ============================================================ */

main>section:first-child {
	min-height: 480px;
	padding: 110px 8%;

	background-color: #F8F9F5;
	background-image:
		url("../images/leafyui-hero-background.webp");
	background-position: center center;
	background-size: cover;
	background-repeat: no-repeat;
}


h1 {
	margin: 0 0 20px;
	font-size: clamp(30px, 4vw, 52px);
	font-weight: 500;
	letter-spacing: 0.07em;
}

main>section:first-child p {
	max-width: 700px;
	color: #506358;
}

/* ボタン */
main a[href="#contact"] {
	display: inline-block;
	margin-top: 24px;
	padding: 12px 32px;
	background: var(--color-primary);
	color: var(--color-white);
	border-radius: 30px;
	text-decoration: none;
	transition: background 0.2s ease;
}

main a[href="#contact"]:hover {
	background: #326A51;
}

/* 通常セクション */
main>section:not(:first-child) {
	padding: 80px 8%;
	background: var(--color-white);
	border-top: 1px solid #EDF0EA;
}

h2 {
	font-size: 26px;
	font-weight: 500;
}

/* フッター */
footer {
	padding: 24px;
	text-align: center;
	background: var(--color-primary);
	color: var(--color-white);
	font-size: 13px;
}

/* スマートフォン */
@media (max-width: 768px) {

	main>section:first-child {
		min-height: 340px;
		padding: 75px 6%;
	}

	main>section:not(:first-child) {
		padding: 50px 6%;
	}

	h1 {
		font-size: 30px;
	}
}


/* ============================================================
 * Step 4: Header / Navigation
 * ============================================================ */

.site-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	padding: 18px 6%;
	background: var(--color-white);
	border-bottom: 1px solid #E6E9E3;
}

.site-brand {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	color: var(--color-primary);
	text-decoration: none;
	white-space: nowrap;
}

.site-nav {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 24px;
}

.site-nav a {
	color: var(--color-primary);
	text-decoration: none;
	font-size: 14px;
	font-weight: 500;
	transition: color 0.2s ease;
}

.site-nav a:hover {
	color: #70977B;
}

.site-nav a:focus-visible,
.site-brand:focus-visible {
	outline: 2px solid var(--color-primary);
	outline-offset: 4px;
}

@media (max-width: 768px) {
	.site-header {
		flex-direction: column;
		align-items: flex-start;
		gap: 12px;
		padding: 14px 5%;
	}

	.site-nav {
		gap: 12px 20px;
	}
}


/* ============================================================
 * Step 5: Brand Logo
 * ============================================================ */

.site-header .site-logo {
	display: block;
	width: 180px;
	max-width: 100%;
	height: auto;
}

@media (max-width: 768px) {
	.site-header .site-logo {
		width: 150px;
	}
}


/* ============================================================
 * Step 7: About Me
 * ============================================================ */

main>section.about-section {
	background: #F8F9F5;
}

.about-message p {
	margin: 0 0 16px;
}

/* 経験・専門領域カード */

.about-highlights {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 20px;
	margin-top: 40px;
}

.about-highlight {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-height: 120px;
	padding: 20px;
	background: #FFFFFF;
	border: 1px solid #E2E8DF;
	border-radius: 12px;
	text-align: center;
}

.about-highlight strong {
	color: var(--color-primary);
	font-size: 20px;
	font-weight: 600;
}

.about-highlight span {
	color: #69766C;
	font-size: 13px;
}

/* スマートフォン */

@media (max-width: 768px) {

	.about-highlights {
		grid-template-columns: 1fr;
		gap: 12px;
		margin-top: 28px;
	}

	.about-highlight {
		min-height: 90px;
	}
}


/* ============================================================
 * Step 8: Services
 * ------------------------------------------------------------
 * お手伝いできること
 * ============================================================ */

main>section.services-section {
	background: #FFFFFF;
}

/* サービスカード */

.services-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 24px;
	margin-top: 40px;
}

.service-card {
	min-width: 0;
	padding: 30px;
	background: #F8F9F5;
	border: 1px solid #E2E8DF;
	border-radius: 12px;
	transition:
		border-color 0.2s ease,
		transform 0.2s ease;
}

.service-card:hover {
	border-color: var(--color-sage);
	transform: translateY(-3px);
}

.service-number {
	display: block;
	margin-bottom: 16px;
	color: #B19653;
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0.1em;
}

.service-card h3 {
	margin: 0 0 14px;
	color: var(--color-primary);
	font-size: 20px;
	font-weight: 600;
}

.service-card p {
	margin: 0;
	color: #506358;
	font-size: 14px;
	line-height: 1.9;
}

/* スマートフォン */

@media (max-width: 768px) {

	.services-grid {
		grid-template-columns: 1fr;
		gap: 16px;
		margin-top: 28px;
	}

	.service-card {
		padding: 24px;
	}

	.service-card h3 {
		font-size: 18px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.service-card {
		transition: none;
	}

	.service-card:hover {
		transform: none;
	}
}

/* ============================================================
 * Step 9: Experience
 * ------------------------------------------------------------
 * 実績・経験紹介
 * ============================================================ */

main>section.experience-section {
	background: #F8F9F5;
}

/* 実績カード */

.experience-stats {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 20px;
	margin-top: 40px;
}

.experience-stat {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 10px;
	min-width: 0;
	min-height: 145px;
	padding: 24px 16px;
	background: #FFFFFF;
	border: 1px solid #E2E8DF;
	border-radius: 12px;
	text-align: center;
}

.experience-stat strong {
	color: var(--color-primary);
	font-size: clamp(22px, 2.5vw, 30px);
	font-weight: 600;
	line-height: 1.4;
}

.experience-stat span {
	color: #69766C;
	font-size: 13px;
	line-height: 1.6;
}

/* 経験領域のタグ */

.experience-details {
	margin-top: 44px;
	padding-top: 30px;
	border-top: 1px solid #DDE6DD;
}

.experience-details h3 {
	margin: 0 0 20px;
	color: var(--color-primary);
	font-size: 18px;
	font-weight: 600;
}

.experience-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
}

.experience-tags span {
	display: inline-block;
	padding: 8px 18px;
	background: #FFFFFF;
	border: 1px solid #DDE6DD;
	border-radius: 24px;
	color: #506358;
	font-size: 13px;
	line-height: 1.5;
}

/* 締めのメッセージ */

.experience-note {
	margin: 32px 0 0;
	max-width: 760px;
	color: #69766C;
	font-size: 14px;
	line-height: 2;
}

/* スマートフォン */

@media (max-width: 768px) {

	.experience-stats {
		grid-template-columns: 1fr;
		gap: 12px;
		margin-top: 28px;
	}

	.experience-stat {
		min-height: 100px;
		padding: 20px;
	}

	.experience-details {
		margin-top: 30px;
		padding-top: 24px;
	}

	.experience-tags {
		gap: 8px;
	}

	.experience-tags span {
		padding: 7px 14px;
		font-size: 12px;
	}
}


/* ============================================================
 * Step 10: SBDIY Product
 * ------------------------------------------------------------
 * 製品・開発実績紹介
 * ============================================================ */

main>section.product-section {
	background: #FFFFFF;
}

/* セクションラベル */

/* SBDIYタイトル */

.product-section h2 {
	margin: 0 0 8px;
	color: var(--color-primary);
	font-size: clamp(36px, 5vw, 52px);
	font-weight: 600;
	letter-spacing: 0.04em;
}

.product-container>h3 {
	margin: 0 0 24px;
	color: var(--color-text);
	font-size: clamp(20px, 2.5vw, 28px);
	font-weight: 500;
	letter-spacing: 0.04em;
}

/* Human / Knowledge / AI */

.product-concepts {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 20px;
	margin-top: 40px;
}

.product-concept {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-width: 0;
	min-height: 130px;
	padding: 24px 16px;
	background: #F1F6F0;
	border: 1px solid #DFE9DD;
	border-radius: 12px;
	text-align: center;
}

.product-concept strong {
	color: var(--color-primary);
	font-size: clamp(17px, 2vw, 22px);
	font-weight: 600;
}

.product-concept span {
	color: #506358;
	font-size: 13px;
}

/* 技術・開発方針 */

.product-description {
	margin-top: 44px;
	padding-top: 30px;
	border-top: 1px solid #DDE6DD;
}

.product-description h3 {
	margin: 0 0 20px;
	color: var(--color-primary);
	font-size: 22px;
	font-weight: 500;
}

.product-description p {
	max-width: 760px;
	margin: 0 0 16px;
	color: #506358;
	font-size: 14px;
	line-height: 2;
}

/* スマートフォン */

@media (max-width: 768px) {

	.product-concepts {
		grid-template-columns: 1fr;
		gap: 12px;
		margin-top: 28px;
	}

	.product-concept {
		min-height: 95px;
		padding: 20px;
	}

	.product-description {
		margin-top: 30px;
		padding-top: 24px;
	}

	.product-description h3 {
		font-size: 20px;
	}
}

/* ============================================================
 * Step 11: SBDIY Screenshots
 * ------------------------------------------------------------
 * 実画面紹介カード
 * ============================================================ */

.product-screenshots {
	margin-top: 56px;
	padding-top: 36px;
	border-top: 1px solid #DDE6DD;
}

.product-screenshots>h3 {
	margin: 0 0 16px;
	color: var(--color-primary);
	font-size: clamp(22px, 2.8vw, 30px);
	font-weight: 500;
}

.product-screenshots-intro {
	max-width: 760px;
	margin: 0;
	color: #506358;
	font-size: 14px;
	line-height: 2;
}

/* 画像カード一覧 */

.product-screenshots-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 20px;
	margin-top: 32px;
}

.product-screenshot-card {
	min-width: 0;
	margin: 0;
	overflow: hidden;
	background: #FFFFFF;
	border: 1px solid #E2E8DF;
	border-radius: 12px;
}

/* スクリーンショット */

.product-screenshot-card img {
	display: block;
	width: 100%;
	aspect-ratio: 16 / 10;
	object-fit: contain;
	object-position: center;
	background: #F1F6F0;
	border-bottom: 1px solid #E2E8DF;
}

/* 画面説明 */

.product-screenshot-card figcaption {
	padding: 20px;
}

.product-screenshot-card h4 {
	margin: 0 0 12px;
	color: var(--color-primary);
	font-size: 17px;
	font-weight: 600;
}

.product-screenshot-card figcaption p {
	margin: 0;
	color: #506358;
	font-size: 13px;
	line-height: 1.9;
}

/* AIサンプルデータに関する注記 */

.product-sample-note {
	margin: 24px 0 0;
	padding: 14px 18px;
	background: #F8F9F5;
	border-left: 3px solid var(--color-sage);
	color: #69766C;
	font-size: 12px;
	line-height: 1.9;
}

/* タブレット */

@media (max-width: 1024px) and (min-width: 769px) {
	.product-screenshots-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

/* スマートフォン */

@media (max-width: 768px) {
	.product-screenshots {
		margin-top: 36px;
		padding-top: 26px;
	}

	.product-screenshots-grid {
		grid-template-columns: 1fr;
		gap: 16px;
		margin-top: 24px;
	}

	.product-screenshot-card figcaption {
		padding: 18px;
	}

	.product-sample-note {
		margin-top: 20px;
		padding: 12px 14px;
	}
}

/* ============================================================
 * Step 11-7: Screenshot Lightbox
 * ------------------------------------------------------------
 * スクリーンショット拡大表示
 * ============================================================ */

/* dialog 本体 */

.screenshot-lightbox {
	position: fixed;
	box-sizing: border-box;
	width: min(1200px, 94vw);
	max-width: none;
	max-height: 94vh;
	max-height: 94dvh;
	margin: auto;
	padding: 0;
	overflow: auto;
	background: #18231F;
	color: #FFFFFF;
	border: 1px solid #53665A;
	border-radius: 12px;
	box-shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

/* 閉じているときは表示しない */

.screenshot-lightbox:not([open]) {
	display: none;
}

/* 背景の暗転 */

.screenshot-lightbox::backdrop {
	background: rgba(0, 0, 0, 0.82);
}

/* 内部レイアウト */

.screenshot-lightbox-content {
	position: relative;
	padding: 48px 20px 20px;
	text-align: center;
}

/* 閉じるボタン */

.screenshot-lightbox-close {
	position: absolute;
	top: 8px;
	right: 12px;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	padding: 0;
	background: transparent;
	color: #FFFFFF;
	border: none;
	border-radius: 50%;
	font-size: 28px;
	line-height: 1;
	cursor: pointer;
}

.screenshot-lightbox-close:hover {
	background: rgba(255, 255, 255, 0.15);
}

.screenshot-lightbox-close:focus-visible {
	outline: 2px solid #FFFFFF;
	outline-offset: 2px;
}

/* 拡大画像 */

.screenshot-lightbox img {
	display: block;
	width: auto;
	max-width: 100%;
	max-height: 72vh;
	max-height: 72dvh;
	margin: 0 auto;
	object-fit: contain;
}

/* 画像説明 */

#screenshotLightboxCaption {
	margin: 14px 0 0;
	color: #E0E8E2;
	font-size: 14px;
	line-height: 1.6;
}

/* 一覧画像がクリック可能と分かるようにする */

.product-screenshot-link {
	display: block;
	cursor: zoom-in;
}

.product-screenshot-link:focus-visible {
	outline: 3px solid var(--color-primary);
	outline-offset: -3px;
}

/* スマートフォン */

@media (max-width: 768px) {
	.screenshot-lightbox {
		width: 96vw;
		max-height: 96vh;
		max-height: 96dvh;
	}

	.screenshot-lightbox-content {
		padding: 48px 10px 16px;
	}

	.screenshot-lightbox img {
		max-height: 70vh;
		max-height: 70dvh;
	}

	#screenshotLightboxCaption {
		font-size: 12px;
	}
}

/* ============================================================
 * Step 12: Contact / Let's Talk
 * ------------------------------------------------------------
 * お問い合わせセクション
 * ============================================================ */

main>section.contact-section {
	background: #F8F9F5;
}

/* LinkedIn / メールボタン */

.contact-actions {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 16px;
	margin-top: 36px;
}

.contact-actions a {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 48px;
	padding: 12px 28px;
	border: 1px solid var(--color-primary);
	border-radius: 30px;
	text-decoration: none;
	font-size: 14px;
	font-weight: 600;
	line-height: 1.5;
	transition:
		background-color 0.2s ease,
		color 0.2s ease;
}

/* LinkedIn：メインボタン */

.contact-actions .contact-linkedin {
	background: var(--color-primary);
	color: #FFFFFF;
}

.contact-actions .contact-linkedin:hover {
	background: #326A51;
	color: #FFFFFF;
}

/* メール：サブボタン */

.contact-actions .contact-email {
	background: #FFFFFF;
	color: var(--color-primary);
}

.contact-actions .contact-email:hover {
	background: #EAF1E8;
}

/* キーボード操作 */

.contact-actions a:focus-visible {
	outline: 3px solid #B19653;
	outline-offset: 3px;
}

/* 補足メッセージ */

.contact-note {
	margin: 24px 0 0;
	color: #69766C;
	font-size: 13px;
}

/* スマートフォン */

@media (max-width: 768px) {

	.contact-actions {
		flex-direction: column;
		align-items: stretch;
		gap: 12px;
		margin-top: 28px;
	}

	.contact-actions a {
		width: 100%;
	}
}

@media (prefers-reduced-motion: reduce) {
	.contact-actions a {
		transition: none;
	}
}


/* ============================================================
 * Step 13: Common Layout
 * ------------------------------------------------------------
 * セクションコンテナ共通化
 * ============================================================ */

.about-container,
.services-container,
.experience-container,
.product-container,
.contact-container {
	max-width: var(--content-max-width);
	margin-inline: auto;
}


/* ============================================================
 * Step 13: Common Section Label
 * ------------------------------------------------------------
 * セクションラベル共通化
 * ============================================================ */

.section-label {
	margin: 0 0 16px;
	color: #B19653;
	font-size: 12px;
	font-weight: 600;
	letter-spacing: 0.22em;
}


/* ============================================================
 * Step 13: Common Section Heading
 * ------------------------------------------------------------
 * セクション見出し共通化
 * ============================================================ */

.about-section h2,
.services-section h2,
.experience-section h2,
.contact-section h2 {
	margin: 0 0 24px;
	color: var(--color-primary);
	font-size: clamp(24px, 3vw, 34px);
	font-weight: 500;
	letter-spacing: 0.05em;
}

/* About Me固有の余白を維持 */
.about-section h2 {
	margin-bottom: 28px;
}


/* ============================================================
 * Step 13: Common Intro Text
 * ------------------------------------------------------------
 * 紹介文スタイル共通化
 * ============================================================ */

.about-message,
.services-intro,
.experience-intro,
.product-intro,
.contact-intro {
	max-width: 760px;
	color: #506358;
	font-size: 15px;
	line-height: 2;
}

/* 各セクションの紹介文の余白を維持 */
.services-intro,
.experience-intro,
.product-intro,
.contact-intro {
	margin: 0;
}

/* ============================================================
 * Step 13: Common Mobile Section Spacing
 * ------------------------------------------------------------
 * モバイル用セクション余白の共通化
 * ============================================================ */

@media (max-width: 768px) {

	main>section.about-section,
	main>section.services-section,
	main>section.experience-section,
	main>section.product-section,
	main>section.contact-section {
		padding: 55px 6%;
	}

}


/* ============================================================
 * Step 13: Common Desktop Section Spacing
 * ------------------------------------------------------------
 * PC用セクション余白の共通化
 * ============================================================ */

@media (min-width: 769px) {

	main>section.about-section,
	main>section.services-section,
	main>section.experience-section,
	main>section.product-section,
	main>section.contact-section {
		padding: 80px 8%;
	}

}