/* ==========================================================================
   TechTrident Theme - Main Stylesheet
   ========================================================================== */

:root {
	--c-navy: #0a1b3d;
	--c-navy-2: #122a5c;
	--c-navy-3: #1b3a7a;
	--c-accent: #2f7dfa;
	--c-accent-2: #17c3b2;
	--c-text: #1c2433;
	--c-text-soft: #5b6472;
	--c-bg: #ffffff;
	--c-bg-soft: #f4f7fb;
	--c-border: #e3e8f0;
	--radius: 14px;
	--container: 1160px;
	--header-h: 84px;
	--ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
	margin: 0;
	font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
	color: var(--c-text);
	background: var(--c-bg);
	line-height: 1.8;
	font-size: 16px;
	-webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p, table, figure { margin: 0; }
button { font: inherit; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
input, textarea, select { font: inherit; color: inherit; }

.screen-reader-text {
	position: absolute !important;
	clip: rect(1px, 1px, 1px, 1px);
	overflow: hidden;
	height: 1px; width: 1px;
	word-wrap: normal !important;
}
.skip-link.screen-reader-text:focus {
	position: fixed; top: 8px; left: 8px; z-index: 10000;
	width: auto; height: auto; padding: 12px 20px;
	background: var(--c-navy); color: #fff; border-radius: 6px;
}

.l-container {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0 24px;
}

.u-only-pc { display: inline; }
.u-note { color: #b23b3b; font-size: 0.8em; }
.u-note--block { display: block; margin-top: 16px; }

/* ---------- Buttons ---------- */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 14px 32px;
	border-radius: 999px;
	font-weight: 700;
	font-size: 0.95rem;
	letter-spacing: 0.02em;
	transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
	border: 2px solid transparent;
	white-space: nowrap;
}
.btn--primary {
	background: linear-gradient(120deg, var(--c-accent), var(--c-accent-2));
	color: #fff;
	box-shadow: 0 10px 24px -8px rgba(47, 125, 250, 0.55);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -8px rgba(47, 125, 250, 0.6); }
.btn--outline { border-color: rgba(255,255,255,0.6); color: #fff; }
.btn--outline:hover { background: rgba(255,255,255,0.12); }
.btn--light { background: #fff; color: var(--c-navy); }
.btn--light:hover { transform: translateY(-2px); box-shadow: 0 12px 24px -10px rgba(0,0,0,0.35); }
.btn--lg { padding: 16px 40px; font-size: 1rem; }

/* ---------- Header ---------- */
.site-header {
	position: fixed;
	top: 0; left: 0; right: 0;
	height: var(--header-h);
	display: flex;
	align-items: center;
	z-index: 999;
	border-bottom: 1px solid rgba(255,255,255,0.08);
}
/*
 * 背景のぼかしは疑似要素側に持たせる。
 * .site-header 自体に backdrop-filter をかけると、position:fixed の
 * .site-nav (スマホ用メニュー) の基準がビューポートではなく .site-header
 * (高さ84px) になってしまい、メニューがほぼ0pxに潰れて1行しか
 * 表示されなくなるため。
 */
.site-header::before {
	content: "";
	position: absolute;
	inset: 0;
	z-index: -1;
	background: rgba(10, 27, 61, 0.72);
	backdrop-filter: blur(10px);
	transition: background 0.3s var(--ease);
}
.site-header.is-scrolled::before { background: rgba(10, 27, 61, 0.94); }
.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	width: 100%;
}
.site-header__logo, .custom-logo-link { display: flex; align-items: center; gap: 10px; color: #fff; }
.site-header__logo-mark {
	display: inline-flex; align-items: center; justify-content: center;
	width: 40px; height: 40px; border-radius: 10px;
	background: linear-gradient(135deg, var(--c-accent), var(--c-accent-2));
	font-family: "Poppins", sans-serif; font-weight: 700; color: #fff; font-size: 0.95rem;
}
.site-header__logo-text { font-weight: 700; font-size: 1.05rem; letter-spacing: 0.02em; }

.site-nav { display: flex; align-items: center; gap: 32px; }
.site-nav__list { display: flex; align-items: center; gap: 28px; }
.site-nav__list a {
	color: rgba(255,255,255,0.88);
	font-size: 0.92rem;
	font-weight: 500;
	letter-spacing: 0.03em;
	position: relative;
	padding: 6px 0;
}
.site-nav__list a::after {
	content: "";
	position: absolute; left: 0; bottom: 0;
	width: 0; height: 2px;
	background: var(--c-accent-2);
	transition: width 0.25s var(--ease);
}
.site-nav__list a:hover::after { width: 100%; }
.site-nav__cta { padding: 10px 24px; font-size: 0.85rem; }

.site-header__toggle {
	display: none;
	flex-direction: column;
	gap: 5px;
	background: none;
	border: none;
	padding: 8px;
}
.site-header__toggle-bar { width: 26px; height: 2px; background: #fff; border-radius: 2px; transition: transform .25s var(--ease), opacity .25s var(--ease); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
	position: relative;
	min-height: 100vh;
	display: flex;
	align-items: center;
	overflow: hidden;
	background: radial-gradient(120% 120% at 20% 0%, var(--c-navy-3) 0%, var(--c-navy) 55%, #060f24 100%);
	color: #fff;
}
.hero__bg { position: absolute; inset: 0; overflow: hidden; }
.hero__shape { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.35; }
.hero__shape--1 { width: 480px; height: 480px; background: var(--c-accent); top: -120px; right: -80px; }
.hero__shape--2 { width: 360px; height: 360px; background: var(--c-accent-2); bottom: -140px; left: -60px; }
.hero__shape--3 { width: 240px; height: 240px; background: #ffffff; opacity: 0.06; top: 40%; left: 55%; }

.hero__inner { position: relative; z-index: 2; padding-top: var(--header-h); max-width: 760px; }
.hero__eyebrow {
	font-family: "Poppins", sans-serif;
	letter-spacing: 0.18em;
	font-size: 0.78rem;
	color: var(--c-accent-2);
	margin-bottom: 20px;
	font-weight: 600;
}
.hero__title {
	font-size: clamp(2rem, 4.6vw, 3.4rem);
	font-weight: 900;
	line-height: 1.4;
	margin-bottom: 24px;
	letter-spacing: 0.02em;
}
.hero__text { font-size: 1.02rem; color: rgba(255,255,255,0.82); margin-bottom: 40px; max-width: 560px; }
.hero__actions { display: flex; gap: 18px; flex-wrap: wrap; }

.hero__scroll {
	position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
	width: 26px; height: 44px; border: 2px solid rgba(255,255,255,0.5); border-radius: 20px;
	z-index: 2;
}
.hero__scroll span {
	position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
	width: 4px; height: 8px; border-radius: 2px; background: #fff;
	animation: tt-scroll 1.6s infinite;
}
@keyframes tt-scroll {
	0% { opacity: 1; top: 8px; }
	100% { opacity: 0; top: 22px; }
}

/* ---------- Sections (generic) ---------- */
.section { padding: 120px 0; }
.section__eyebrow {
	font-family: "Poppins", sans-serif;
	letter-spacing: 0.18em;
	font-size: 0.78rem;
	font-weight: 700;
	color: var(--c-accent);
	margin-bottom: 14px;
}
.section__title {
	font-size: clamp(1.6rem, 3vw, 2.2rem);
	font-weight: 900;
	line-height: 1.5;
	color: var(--c-navy);
	margin-bottom: 24px;
}
.section__title--sm { font-size: 1.4rem; margin-bottom: 28px; }
.section__lead { color: var(--c-text-soft); max-width: 640px; margin-bottom: 48px; }

.about { background: var(--c-bg); }
.about__text { max-width: 720px; color: var(--c-text-soft); margin-bottom: 56px; }
.about__stats { display: flex; gap: 40px; flex-wrap: wrap; }
.about__stat {
	flex: 1 1 180px;
	padding: 28px 24px;
	border-radius: var(--radius);
	background: var(--c-bg-soft);
	border: 1px solid var(--c-border);
}
.about__stat-num { font-family: "Poppins", sans-serif; font-size: 2.2rem; font-weight: 700; color: var(--c-navy); }
.about__stat-num span { font-size: 1rem; font-weight: 500; margin-left: 4px; }
.about__stat-label { color: var(--c-text-soft); font-size: 0.88rem; margin-top: 6px; }

.service { background: var(--c-bg-soft); }
.strengths { background: var(--c-bg); }
.company-cards { background: var(--c-bg-soft); }
.news { background: var(--c-bg); }

/* ---------- Cards ---------- */
.cards { display: grid; gap: 32px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }

.card {
	background: #fff;
	border: 1px solid var(--c-border);
	border-radius: var(--radius);
	padding: 40px 32px;
	transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 24px 40px -20px rgba(10, 27, 61, 0.25); border-color: transparent; }
.card__icon {
	width: 56px; height: 56px;
	display: flex; align-items: center; justify-content: center;
	border-radius: 14px;
	background: linear-gradient(135deg, rgba(47,125,250,0.12), rgba(23,195,178,0.16));
	color: var(--c-accent);
	margin-bottom: 24px;
}
.card__icon svg { width: 28px; height: 28px; }
.card__title { font-size: 1.1rem; font-weight: 700; color: var(--c-navy); margin-bottom: 12px; }
.card__text { color: var(--c-text-soft); font-size: 0.92rem; }

.card--flat { background: var(--c-bg-soft); border: none; position: relative; padding-top: 56px; }
.card--flat__num {
	position: absolute; top: 20px; left: 32px;
	font-family: "Poppins", sans-serif; font-weight: 700; font-size: 1.6rem;
	color: var(--c-accent-2); opacity: 0.7;
}

.card--link { display: block; }
.card__more { display: inline-block; margin-top: 18px; font-weight: 700; font-size: 0.85rem; color: var(--c-accent); }

/* ---------- News ---------- */
.news-list { border-top: 1px solid var(--c-border); }
.news-list__item { border-bottom: 1px solid var(--c-border); }
.news-list__item a {
	display: flex; align-items: baseline; gap: 24px;
	padding: 22px 4px;
	transition: opacity 0.2s var(--ease);
}
.news-list__item a:hover { opacity: 0.6; }
.news-list__date { font-family: "Poppins", sans-serif; color: var(--c-text-soft); font-size: 0.88rem; flex: 0 0 auto; }
.news-list__title { color: var(--c-text); font-weight: 500; }
.news-list__item--dummy { padding: 22px 4px; color: var(--c-text-soft); display: flex; gap: 24px; }

/* ---------- CTA band ---------- */
.cta-band {
	background: linear-gradient(120deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
	color: #fff;
	text-align: center;
	padding: 100px 0;
}
.cta-band__title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 900; margin-bottom: 20px; }
.cta-band__text { color: rgba(255,255,255,0.78); margin-bottom: 40px; }

/* ---------- Footer ---------- */
.site-footer { background: #08152e; color: rgba(255,255,255,0.85); }
.site-footer__cta { background: linear-gradient(120deg, var(--c-accent), var(--c-accent-2)); }
.site-footer__cta-inner {
	display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px;
	padding: 48px 24px;
	color: #fff;
}
.site-footer__cta-title { font-size: 1.15rem; font-weight: 700; }

.site-footer__main {
	display: grid;
	grid-template-columns: 1.4fr 1fr 1fr;
	gap: 40px;
	padding: 72px 24px 48px;
	border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-footer__brand { display: flex; flex-direction: column; gap: 18px; }
.site-footer__address { font-size: 0.88rem; color: rgba(255,255,255,0.65); }
.site-footer__address a:hover { color: #fff; }
.site-footer__nav-list { display: flex; flex-direction: column; gap: 12px; font-size: 0.9rem; }
.site-footer__nav-list a { color: rgba(255,255,255,0.72); }
.site-footer__nav-list a:hover { color: #fff; }
.footer-widget__title { font-size: 0.9rem; margin-bottom: 12px; color: #fff; }

.site-footer__bottom { text-align: center; padding: 24px; font-size: 0.78rem; color: rgba(255,255,255,0.45); }

/* ---------- Generic page header ---------- */
.page-header {
	padding: calc(var(--header-h) + 64px) 0 56px;
	background: linear-gradient(120deg, var(--c-navy) 0%, var(--c-navy-3) 100%);
	color: #fff;
}
.page-header__eyebrow { font-family: "Poppins", sans-serif; letter-spacing: 0.18em; font-size: 0.78rem; color: var(--c-accent-2); margin-bottom: 12px; font-weight: 700; }
.page-header__title { font-size: clamp(1.6rem, 3.4vw, 2.4rem); font-weight: 900; }

.page-content { padding: 72px 0; }
.page-content__body { margin-bottom: 48px; color: var(--c-text-soft); }

/* ---------- Company page ---------- */
.message-block, .company-table-block, .map-block { margin-bottom: 88px; }
.message-block__inner { display: flex; gap: 48px; align-items: flex-start; }
.message-block__photo {
	flex: 0 0 220px; height: 260px; border-radius: var(--radius);
	background: var(--c-bg-soft); border: 1px dashed var(--c-border);
	display: flex; align-items: center; justify-content: center;
	color: var(--c-text-soft); font-size: 0.85rem; text-align: center;
}
.message-block__body p { color: var(--c-text-soft); }
.message-block__sign { margin-top: 24px; font-weight: 700; color: var(--c-navy); }
.message-block__sign-en { display: block; font-weight: 400; font-size: 0.85rem; color: var(--c-text-soft); font-family: "Poppins", sans-serif; }

.company-table th, .company-table td {
	text-align: left;
	padding: 20px 16px;
	border-bottom: 1px solid var(--c-border);
	vertical-align: top;
}
.company-table th { width: 220px; color: var(--c-text-soft); font-weight: 500; font-size: 0.92rem; }
.company-table td { font-weight: 500; }

.map-block__frame { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--c-border); }

/* ---------- Contact page ---------- */
.contact-page__grid { display: grid; grid-template-columns: 320px 1fr; gap: 56px; align-items: start; }
.contact-page__tel { font-family: "Poppins", sans-serif; font-size: 1.6rem; font-weight: 700; color: var(--c-navy); margin-bottom: 4px; }
.contact-page__info > * + * { margin-top: 8px; }
.contact-page__info h2 { margin-top: 40px; }
.contact-page__info h2:first-child { margin-top: 0; }

.form-notice { padding: 16px 20px; border-radius: 10px; margin-bottom: 24px; font-size: 0.92rem; }
.form-notice--success { background: #e6f7ee; color: #1c7a4c; }
.form-notice--error { background: #fdeceb; color: #b23b3b; }

.contact-form .form-row { margin-bottom: 24px; }
.contact-form label { display: block; font-weight: 700; font-size: 0.92rem; margin-bottom: 8px; color: var(--c-navy); }
.contact-form .required { display: inline-block; background: #eb5757; color: #fff; font-size: 0.68rem; font-weight: 700; padding: 2px 8px; border-radius: 4px; margin-left: 6px; vertical-align: middle; }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"],
.contact-form textarea {
	width: 100%;
	padding: 14px 16px;
	border: 1px solid var(--c-border);
	border-radius: 8px;
	background: var(--c-bg-soft);
	transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.contact-form input:focus, .contact-form textarea:focus {
	outline: none; border-color: var(--c-accent); background: #fff;
}
.form-row--submit { text-align: center; margin-top: 40px; }

/* ---------- Archive / Single ---------- */
.archive-main, .single-main { padding: calc(var(--header-h) + 64px) 24px 96px; }
.archive-header__title, .single-post__title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 900; color: var(--c-navy); margin-bottom: 40px; }
.post-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.post-list__link { display: block; border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease); }
.post-list__link:hover { transform: translateY(-4px); box-shadow: 0 20px 34px -20px rgba(10,27,61,0.3); }
.post-list__thumb { aspect-ratio: 16/9; background: var(--c-bg-soft); display: flex; align-items: center; justify-content: center; }
.post-list__thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-list__thumb-fallback { color: var(--c-text-soft); font-family: "Poppins", sans-serif; font-weight: 600; }
.post-list__body { padding: 24px; }
.post-list__date { color: var(--c-text-soft); font-size: 0.82rem; margin-bottom: 8px; font-family: "Poppins", sans-serif; }
.post-list__title { font-size: 1.05rem; font-weight: 700; color: var(--c-navy); margin-bottom: 10px; }
.post-list__excerpt { font-size: 0.88rem; color: var(--c-text-soft); }

.single-post__date { color: var(--c-text-soft); font-size: 0.88rem; margin-bottom: 12px; }
.single-post__thumb { margin: 32px 0; border-radius: var(--radius); overflow: hidden; }
.single-post__content { color: var(--c-text-soft); }
.single-post__content p { margin-bottom: 1.4em; }
.single-post__nav { margin-top: 56px; }
.single-post__nav a { color: var(--c-accent); font-weight: 700; }

.pagination { margin-top: 56px; display: flex; justify-content: center; gap: 12px; }
.pagination .page-numbers { padding: 10px 16px; border: 1px solid var(--c-border); border-radius: 8px; }
.pagination .page-numbers.current { background: var(--c-navy); color: #fff; border-color: var(--c-navy); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
	.site-nav {
		position: fixed;
		top: var(--header-h); left: 0; right: 0; bottom: 0;
		flex-direction: column;
		align-items: flex-start;
		justify-content: flex-start;
		background: var(--c-navy);
		padding: 32px 24px;
		gap: 28px;
		transform: translateX(100%);
		transition: transform 0.3s var(--ease);
		overflow-y: auto;
	}
	.site-nav.is-open { transform: translateX(0); }
	.site-nav__list { flex-direction: column; align-items: flex-start; gap: 22px; }
	.site-nav__list a { font-size: 1.05rem; }
	.site-nav__cta { width: 100%; }
	.site-header__toggle { display: flex; }

	.cards--3 { grid-template-columns: 1fr; }
	.about__stats { flex-direction: column; }
	.message-block__inner { flex-direction: column; }
	.message-block__photo { width: 100%; }
	.site-footer__main { grid-template-columns: 1fr; }
	.contact-page__grid { grid-template-columns: 1fr; }
	.post-list { grid-template-columns: 1fr; }
	.u-only-pc { display: none; }
	.section { padding: 80px 0; }
	.company-table th { width: 130px; font-size: 0.82rem; }
	.company-table th, .company-table td { padding: 14px 8px; }
}

@media (max-width: 560px) {
	.hero__actions { flex-direction: column; align-items: stretch; }
	.site-footer__cta-inner { flex-direction: column; align-items: flex-start; }
}