/* ============================================
   DATALEDGE Corporate Site
   Data → Knowledge → Edge
   クリーン＆プロフェッショナル ライトテーマ
   ============================================ */

:root {
	/* カラーパレット - クリーン＆信頼 */
	--color-bg-light: #ffffff;
	--color-bg-subtle: #f8fafc;
	--color-bg-muted: #f1f5f9;
	--color-bg-card: #ffffff;
	--color-bg-card-hover: #f8fafc;
	
	/* プライマリ - 深みのあるネイビー */
	--color-primary: #1e3a5f;
	--color-primary-light: #2d5a8a;
	--color-primary-dark: #0f2744;
	
	/* アクセント - 信頼感のあるブルー */
	--color-accent: #0066cc;
	--color-accent-light: #3388dd;
	--color-accent-dark: #004499;
	--color-accent-bg: rgba(0, 102, 204, 0.08);
	
	/* セカンダリ - 洗練されたティール */
	--color-secondary: #0891b2;
	--color-secondary-light: #22d3ee;
	
	/* テキスト */
	--color-text: #1e293b;
	--color-text-muted: #64748b;
	--color-text-dim: #94a3b8;
	--color-border: #e2e8f0;
	--color-border-light: #f1f5f9;

	/* タイポグラフィ */
	--font-heading: 'Inter', 'Noto Sans JP', sans-serif;
	--font-body: 'Noto Sans JP', 'Inter', sans-serif;

	/* スペーシング */
	--spacing-xs: 0.5rem;
	--spacing-sm: 1rem;
	--spacing-md: 2rem;
	--spacing-lg: 4rem;
	--spacing-xl: 6rem;
	--spacing-2xl: 8rem;

	/* トランジション */
	--transition-fast: 0.2s ease;
	--transition-smooth: 0.3s ease;
	--transition-slow: 0.5s ease;

	/* シャドウ */
	--shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
	--shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
	--shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* リセット & ベース */
*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	font-family: var(--font-body);
	margin: 0;
	padding: 0;
	color: var(--color-text);
	background-color: var(--color-bg-light);
	line-height: 1.8;
	font-size: 16px;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

/* ヘッダー */
header {
	background-color: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(20px);
	-webkit-backdrop-filter: blur(20px);
	position: fixed;
	width: 100%;
	top: 0;
	z-index: 1000;
	border-bottom: 1px solid var(--color-border);
}

.container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 var(--spacing-md);
}

nav {
	display: flex;
	justify-content: space-between;
	align-items: center;
	height: 72px;
}

.logo {
	font-family: var(--font-heading);
	font-weight: 700;
	font-size: 1.3rem;
	color: var(--color-primary);
	text-decoration: none;
	letter-spacing: 0.2em;
	transition: color var(--transition-fast);
	display: flex;
	align-items: baseline;
}

.logo:hover {
	color: var(--color-accent);
}

.logo-img {
	height: 1.1em;
	width: auto;
	margin-right: 0.2em;
	vertical-align: baseline;
}

.nav-links a {
	margin-left: var(--spacing-lg);
	text-decoration: none;
	color: var(--color-text-muted);
	font-weight: 500;
	font-size: 0.9rem;
	letter-spacing: 0.05em;
	position: relative;
	transition: color var(--transition-fast);
}

.nav-links a::after {
	content: '';
	position: absolute;
	bottom: -4px;
	left: 0;
	width: 0;
	height: 2px;
	background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
	transition: width var(--transition-smooth);
}

.nav-links a:hover {
	color: var(--color-text);
}

.nav-links a:hover::after {
	width: 100%;
}

/* ===== Hero Section ===== */
.hero {
	position: relative;
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	padding: 120px 0 80px;
	overflow: hidden;
}

.hero-bg {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: 
		radial-gradient(ellipse at 30% 20%, rgba(0, 102, 204, 0.06) 0%, transparent 50%),
		radial-gradient(ellipse at 70% 80%, rgba(8, 145, 178, 0.04) 0%, transparent 50%),
		linear-gradient(180deg, var(--color-bg-subtle) 0%, var(--color-bg-light) 100%);
	pointer-events: none;
}

.hero-bg::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-image: 
		linear-gradient(rgba(0, 102, 204, 0.03) 1px, transparent 1px),
		linear-gradient(90deg, rgba(0, 102, 204, 0.03) 1px, transparent 1px);
	background-size: 60px 60px;
	opacity: 0.4;
}

/* Neural Network Canvas */
.hero-neural-network {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	z-index: 1;
}

/* Hero Waves Animation */
.hero-waves {
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	height: 40%;
	pointer-events: none;
	overflow: hidden;
	z-index: 2;
}

.wave {
	position: absolute;
	bottom: 0;
	left: 0;
	width: 200%;
	height: 100%;
	opacity: 0.6;
}

.wave path {
	fill: var(--color-accent);
}

.wave-1 {
	opacity: 0.15;
	animation: wave-flow 25s linear infinite;
}

.wave-1 path {
	fill: var(--color-accent);
}

.wave-2 {
	opacity: 0.1;
	animation: wave-flow 20s linear infinite reverse;
	animation-delay: -5s;
}

.wave-2 path {
	fill: var(--color-secondary);
}

.wave-3 {
	opacity: 0.08;
	animation: wave-flow 30s linear infinite;
	animation-delay: -10s;
}

.wave-3 path {
	fill: var(--color-primary-light);
}

@keyframes wave-flow {
	0% {
		transform: translateX(0);
	}
	100% {
		transform: translateX(-50%);
	}
}

.hero .container {
	position: relative;
	z-index: 3;
	background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.6) 50%, transparent 70%);
	padding: 3rem;
	border-radius: 20px;
}

.hero-tagline {
	font-family: var(--font-heading);
	font-size: 0.9rem;
	letter-spacing: 0.3em;
	color: var(--color-accent);
	margin-bottom: 1.5rem;
	text-transform: uppercase;
}

.hero h1 {
	font-family: var(--font-heading);
	font-size: 3rem;
	font-weight: 700;
	line-height: 1.4;
	margin: 0 0 2rem;
	letter-spacing: 0.02em;
}

.hero-accent {
	background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.hero-description {
	font-size: 1.1rem;
	color: var(--color-text-muted);
	max-width: 700px;
	margin: 0 auto 2.5rem;
	line-height: 2;
}

.hero-cta {
	display: flex;
	gap: 1rem;
	justify-content: center;
	flex-wrap: wrap;
}

/* ボタン */
.btn {
	display: inline-block;
	padding: 1rem 2.5rem;
	border-radius: 4px;
	font-family: var(--font-heading);
	font-size: 0.9rem;
	font-weight: 600;
	text-decoration: none;
	letter-spacing: 0.05em;
	transition: all var(--transition-smooth);
	cursor: pointer;
	border: none;
}

.btn-primary {
	background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
	color: white;
	box-shadow: var(--shadow-md);
}

.btn-primary:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.btn-secondary {
	background-color: transparent;
	color: var(--color-primary);
	border: 1px solid var(--color-border);
}

.btn-secondary:hover {
	background-color: var(--color-bg-subtle);
	border-color: var(--color-accent);
	color: var(--color-accent);
}

.btn-large {
	padding: 1.2rem 3rem;
	font-size: 1rem;
}

/* ===== Section Common ===== */
section {
	padding: var(--spacing-2xl) 0;
}

h2 {
	font-family: var(--font-heading);
	font-size: 2rem;
	font-weight: 600;
	text-align: center;
	margin-bottom: var(--spacing-sm);
	color: var(--color-text);
	letter-spacing: 0.1em;
}

h2::after {
	content: '';
	display: block;
	width: 60px;
	height: 2px;
	background: linear-gradient(90deg, var(--color-accent), transparent);
	margin: 1rem auto 0;
}

.section-lead {
	text-align: center;
	color: var(--color-text-muted);
	margin-bottom: var(--spacing-lg);
	font-size: 1.05rem;
	max-width: 700px;
	margin-left: auto;
	margin-right: auto;
	line-height: 1.9;
}

/* ===== Value Loop Section ===== */
.section-value-loop {
	background-color: var(--color-bg-subtle);
	position: relative;
}

.section-value-loop::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.value-loop-visual {
	display: flex;
	align-items: stretch;
	justify-content: center;
	gap: 1rem;
	margin-top: var(--spacing-lg);
	position: relative;
}

.loop-phase {
	flex: 1;
	max-width: 340px;
	background: var(--color-bg-card);
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: var(--spacing-md);
	text-align: center;
	transition: all var(--transition-smooth);
	position: relative;
	box-shadow: var(--shadow-sm);
}

.loop-phase:hover {
	border-color: var(--color-accent);
	transform: translateY(-4px);
	box-shadow: var(--shadow-lg);
}

.phase-number {
	font-family: var(--font-heading);
	font-size: 0.75rem;
	letter-spacing: 0.2em;
	color: var(--color-accent);
	margin-bottom: 1rem;
	text-transform: uppercase;
}

.phase-icon {
	width: 64px;
	height: 64px;
	margin: 0 auto 1rem;
	color: var(--color-accent);
}

.phase-icon svg {
	width: 100%;
	height: 100%;
}

.loop-phase h3 {
	font-family: var(--font-heading);
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0 0 0.5rem;
	letter-spacing: 0.1em;
	color: var(--color-primary);
}

.phase-subtitle {
	font-size: 0.85rem;
	color: var(--color-secondary);
	margin-bottom: 1rem;
	letter-spacing: 0.05em;
}

.phase-description {
	font-size: 0.9rem;
	color: var(--color-text-muted);
	line-height: 1.8;
	margin: 0;
}

.loop-arrow {
	display: flex;
	align-items: center;
	font-size: 2rem;
	color: var(--color-accent);
	opacity: 0.6;
}

.phase-data:hover { border-color: var(--color-accent); }
.phase-knowledge:hover { border-color: var(--color-secondary); }
.phase-edge:hover { border-color: #10b981; }

/* ===== Solutions Section ===== */
.section-solutions {
	background-color: var(--color-bg-light);
}

.solutions-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--spacing-md);
}

.solution-card {
	background: var(--color-bg-card);
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: var(--spacing-md);
	transition: all var(--transition-smooth);
	box-shadow: var(--shadow-sm);
}

.solution-card:hover {
	border-color: var(--color-accent);
	transform: translateY(-4px);
	box-shadow: var(--shadow-lg);
}

.solution-icon {
	width: 48px;
	height: 48px;
	color: var(--color-accent);
	margin-bottom: 1rem;
}

.solution-icon svg {
	width: 100%;
	height: 100%;
}

.solution-card h3 {
	font-family: var(--font-heading);
	font-size: 1.2rem;
	font-weight: 600;
	margin: 0 0 0.75rem;
	color: var(--color-primary);
}

.solution-card > p {
	color: var(--color-text-muted);
	font-size: 0.95rem;
	line-height: 1.8;
	margin-bottom: 1rem;
}

.solution-features {
	list-style: none;
	padding: 0;
	margin: 0;
}

.solution-features li {
	position: relative;
	padding-left: 1.5rem;
	font-size: 0.85rem;
	color: var(--color-text-muted);
	margin-bottom: 0.4rem;
}

.solution-features li::before {
	content: '→';
	position: absolute;
	left: 0;
	color: var(--color-accent);
}

.solutions-note {
	text-align: center;
	margin-top: var(--spacing-lg);
	padding: var(--spacing-md);
	background: var(--color-accent-bg);
	border-radius: 8px;
	border: 1px solid var(--color-border);
}

.solutions-note p {
	margin: 0;
	color: var(--color-text-muted);
	font-size: 0.9rem;
}

/* ===== Company Section ===== */
.section-company {
	background-color: var(--color-bg-subtle);
}

.company-content {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: var(--spacing-lg);
	align-items: start;
}

.company-message {
	padding-right: var(--spacing-md);
}

.company-quote {
	font-size: 1.3rem;
	font-weight: 500;
	line-height: 1.8;
	color: var(--color-primary);
	margin-bottom: 1.5rem;
	position: relative;
	padding-left: 1.5rem;
	border-left: 3px solid var(--color-accent);
}

.company-description {
	color: var(--color-text-muted);
	line-height: 2;
}

.info-table {
	width: 100%;
	border-collapse: collapse;
	background: var(--color-bg-card);
	border-radius: 8px;
	overflow: hidden;
	box-shadow: var(--shadow-sm);
}

.info-table tr {
	border-bottom: 1px solid var(--color-border);
	transition: background-color var(--transition-fast);
}

.info-table tr:hover {
	background-color: var(--color-bg-subtle);
}

.info-table th,
.info-table td {
	padding: 1.25rem 1rem;
	text-align: left;
	vertical-align: top;
}

.info-table th {
	width: 30%;
	color: var(--color-text-muted);
	font-weight: 500;
	font-size: 0.9rem;
}

.info-table td {
	color: var(--color-text);
	line-height: 1.8;
}

/* ===== Contact Section ===== */
.section-contact {
	background: linear-gradient(165deg, var(--color-bg-muted) 0%, var(--color-bg-subtle) 100%);
	position: relative;
}

.section-contact::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, var(--color-border), transparent);
	opacity: 0.3;
}

.contact-content {
	text-align: center;
	max-width: 600px;
	margin: 0 auto;
}

.contact-lead {
	font-size: 1.4rem;
	margin-bottom: 1rem;
	line-height: 1.6;
	color: var(--color-primary);
}

.contact-description {
	font-size: 1rem;
	color: var(--color-text-muted);
	margin-bottom: 2rem;
	line-height: 1.8;
}

.contact-cta {
	margin-bottom: 1.5rem;
}

.contact-note {
	font-size: 0.85rem;
	color: var(--color-text-dim);
}

/* Contact Form */
.contact-form {
	max-width: 700px;
	margin: 0 auto;
	text-align: left;
}

.form-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1.5rem;
}

@media (max-width: 640px) {
	.form-row {
		grid-template-columns: 1fr;
		gap: 0;
	}
}

.form-group {
	margin-bottom: 1.5rem;
}

.form-group label {
	display: block;
	font-weight: 500;
	margin-bottom: 0.5rem;
	color: var(--color-text);
	font-size: 0.95rem;
}

.form-group .required {
	color: #dc2626;
	font-size: 0.85rem;
}

.form-group input,
.form-group select,
.form-group textarea {
	width: 100%;
	padding: 0.875rem 1rem;
	border: 1px solid var(--color-border);
	border-radius: 8px;
	font-size: 1rem;
	font-family: inherit;
	background-color: #fff;
	color: var(--color-text);
	transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
	color: var(--color-text-dim);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
	outline: none;
	border-color: var(--color-accent);
	box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group select {
	cursor: pointer;
	appearance: none;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 1rem center;
	padding-right: 2.5rem;
}

.form-group textarea {
	resize: vertical;
	min-height: 150px;
}

.form-note {
	text-align: left;
	margin-bottom: 1.5rem;
}

.form-note p {
	font-size: 0.85rem;
	color: var(--color-text-dim);
}

.form-submit {
	text-align: center;
	margin-bottom: 1.5rem;
}

.form-submit .btn {
	min-width: 200px;
}

.contact-form .contact-note {
	text-align: center;
}

.recaptcha-notice {
	text-align: center;
	font-size: 0.75rem;
	color: var(--color-text-dim);
	margin-top: 1rem;
}

.recaptcha-notice a {
	color: var(--color-text-muted);
	text-decoration: underline;
}

.recaptcha-notice a:hover {
	color: var(--color-accent);
}

/* reCAPTCHA バッジを非表示（代わりにテキストで表示） */
.grecaptcha-badge {
	visibility: hidden;
}

/* ===== Footer ===== */
footer {
	background-color: var(--color-primary-dark);
	color: #ffffff;
	padding: var(--spacing-lg) 0 var(--spacing-md);
	border-top: 1px solid var(--color-border);
}

.footer-content {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: var(--spacing-md);
	padding-bottom: var(--spacing-md);
	border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
	text-align: left;
}

.footer-logo {
	font-family: var(--font-heading);
	font-size: 1.2rem;
	font-weight: 700;
	letter-spacing: 0.2em;
	color: #ffffff;
	display: inline-flex;
	align-items: baseline;
}

.footer-logo .logo-img {
	height: 1.1em;
	margin-right: 0.2em;
}

.footer-tagline {
	margin: 0.5rem 0 0;
	font-size: 0.8rem;
	color: rgba(255, 255, 255, 0.6);
	letter-spacing: 0.1em;
}

.footer-links {
	display: flex;
	gap: var(--spacing-md);
}

.footer-links a {
	color: rgba(255, 255, 255, 0.7);
	text-decoration: none;
	font-size: 0.85rem;
	transition: color var(--transition-fast);
}

.footer-links a:hover {
	color: #ffffff;
}

.footer-copyright {
	margin: 0;
	font-size: 0.8rem;
	color: rgba(255, 255, 255, 0.5);
	text-align: center;
}

/* ===== Thanks Page ===== */
.thanks-page {
	min-height: calc(100vh - 200px);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 4rem 0;
	background: linear-gradient(180deg, var(--color-bg-subtle) 0%, var(--color-bg-light) 100%);
}

.thanks-content {
	text-align: center;
	max-width: 600px;
}

.thanks-icon {
	width: 80px;
	height: 80px;
	margin: 0 auto 2rem;
	background: linear-gradient(135deg, #10b981 0%, #059669 100%);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
}

.thanks-icon svg {
	width: 40px;
	height: 40px;
	color: #ffffff;
}

.thanks-content h1 {
	font-size: 2rem;
	font-weight: 700;
	color: var(--color-text);
	margin-bottom: 1.5rem;
	line-height: 1.4;
}

.thanks-message {
	font-size: 1.1rem;
	color: var(--color-text);
	margin-bottom: 1rem;
	line-height: 1.8;
}

.thanks-note {
	font-size: 0.95rem;
	color: var(--color-text-muted);
	margin-bottom: 2rem;
	line-height: 1.8;
}

.thanks-cta {
	margin-top: 2rem;
}

/* ===== Utilities ===== */
.pc-only {
	display: inline;
}

.sp-only {
	display: none;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
	.value-loop-visual {
		flex-direction: column;
		align-items: center;
	}

	.loop-phase {
		max-width: 100%;
		width: 100%;
	}

	.loop-arrow {
		transform: rotate(90deg);
		margin: 0.5rem 0;
	}

	.solutions-grid {
		grid-template-columns: 1fr;
	}

	.company-content {
		grid-template-columns: 1fr;
	}

	.company-message {
		padding-right: 0;
		margin-bottom: var(--spacing-md);
	}
}

@media (max-width: 768px) {
	.container {
		padding: 0 1.5rem;
	}

	nav {
		height: 64px;
	}

	.logo {
		font-size: 1.1rem;
	}

	.nav-links a {
		margin-left: 1rem;
		font-size: 0.8rem;
	}

	.hero {
		min-height: auto;
		padding: 140px 0 80px;
	}

	.hero h1 {
		font-size: 1.8rem;
	}

	.hero-description {
		font-size: 1rem;
	}

	.hero-cta {
		flex-direction: column;
		align-items: center;
	}

	.btn {
		width: 100%;
		max-width: 280px;
		text-align: center;
	}

	section {
		padding: var(--spacing-xl) 0;
	}

	h2 {
		font-size: 1.6rem;
	}

	.company-quote {
		font-size: 1.1rem;
	}

	.info-table th,
	.info-table td {
		display: block;
		width: 100%;
		padding: 0.75rem 0;
	}

	.info-table th {
		border-bottom: none;
		padding-bottom: 0.25rem;
	}

	.info-table tr {
		border-bottom: 1px solid var(--color-border);
	}

	.footer-content {
		flex-direction: column;
		text-align: center;
		gap: 1.5rem;
	}

	.footer-brand {
		text-align: center;
	}

	.footer-links {
		flex-wrap: wrap;
		justify-content: center;
		gap: 1rem;
	}

	.pc-only {
		display: none;
	}

	.sp-only {
		display: inline;
	}
}

@media (max-width: 480px) {
	.nav-links a {
		margin-left: 0.5rem;
		font-size: 0.7rem;
	}

	.hero h1 {
		font-size: 1.5rem;
	}

	.contact-lead {
		font-size: 1.2rem;
	}
}