/*
Theme Name: insta-rct
Theme URI: https://insta-rct.navicus.jp/
Author: NAVICUS (k.tachi / Claude)
Author URI: https://navicus.jp/
Description: insta-rct.navicus.jp（採用SNS支援サービスLP／SNS採用アカデミー）専用のクラシックテーマ。STUDIO→WordPress移設用。コラム本文を初期HTMLに出力しLLMOを根治する。暫定LPはPhase2で忠実再現。
Version: 0.1.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: Proprietary (NAVICUS internal)
Text Domain: insta-rct
*/

/* Phase1: 基盤確認用の最小スタイル。Phase2で現行LPの忠実再現CSSに差し替える。 */
:root {
  --ir-max: 1200px;
  --ir-text: #1a1a1a;
  --ir-accent: #1a6fd4; /* NAVICUSブルー（LPと統一） */
  --ir-accent-dark: #135bb0;
  --ir-head: #1a1a2e;
  --ir-line: #e7edf3;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ir-text);
  font-family: -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--ir-accent); }
.ir-container { max-width: var(--ir-max); margin: 0 auto; padding: 0 20px; }
.ir-site-header { padding: 14px 0; border-bottom: 1px solid #eef; position: sticky; top: 0; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); z-index: 100; }
.ir-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.ir-logo__img img, .ir-logo img { display: block; height: auto; }
.ir-logo__text { font-weight: 800; font-size: 1.3rem; color: var(--ir-accent); letter-spacing: .04em; text-decoration: none; }
.ir-primary-nav { display: flex; align-items: center; gap: 22px; }
.ir-nav-links { display: flex; align-items: center; gap: 22px; list-style: none; margin: 0; padding: 0; }
.ir-nav-links a { color: #33475b; text-decoration: none; font-size: .92rem; font-weight: 600; white-space: nowrap; }
.ir-nav-links a:hover { color: var(--ir-accent); }
.ir-nav-ctas { display: flex; align-items: center; gap: 8px; }
.ir-nav-cta { display: inline-flex; align-items: center; justify-content: center; gap: 5px; padding: 7px 14px; border-radius: 999px; font-size: .8rem; font-weight: 700; line-height: 1.4; text-decoration: none; white-space: nowrap; transition: background .2s, color .2s, box-shadow .2s, transform .1s; }
.ir-nav-cta__ico { flex: 0 0 auto; }
.ir-nav-cta--primary { background: var(--ir-accent); color: #fff !important; box-shadow: 0 3px 10px rgba(26,111,212,.28); }
.ir-nav-cta--primary:hover { background: var(--ir-accent-dark); transform: translateY(-1px); box-shadow: 0 5px 14px rgba(26,111,212,.38); }
.ir-nav-cta--ghost { background: #fff; color: var(--ir-accent) !important; border: 1.5px solid var(--ir-accent); padding: 5.5px 14px; }
.ir-nav-cta--ghost:hover { background: #eef5fe; }
/* モバイルヘッダー（ハンバーガー）：PCでは非表示、≤920pxで有効化 */
.ir-header__mobile { display: none; align-items: center; gap: 8px; }
.ir-cta-mini { padding: 7px 12px; font-size: .78rem; }
.ir-burger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 38px; padding: 0 9px; border: 1px solid #d5deea; border-radius: 10px; background: #fff; cursor: pointer; }
.ir-burger__bar { display: block; height: 2px; width: 100%; background: #1a2740; border-radius: 2px; transition: transform .22s ease, opacity .18s ease; }
.ir-nav-scrim { display: none; position: fixed; inset: 0; background: rgba(10,20,40,.42); opacity: 0; visibility: hidden; transition: opacity .22s ease, visibility .22s; z-index: 90; }
.ir-nav-scrim.is-open { opacity: 1; visibility: visible; }
body.ir-noscroll { overflow: hidden; }
.ir-site-footer { margin-top: 64px; }
@media (max-width: 1080px) {
	.ir-nav-links { gap: 16px; }
	.ir-nav-links a { font-size: .85rem; }
	.ir-primary-nav { gap: 16px; }
}
@media (max-width: 920px) {
	.ir-site-header { padding: 8px 0; }
	.ir-header__inner { flex-wrap: nowrap; gap: 12px; }
	.ir-header__mobile { display: flex; }
	.ir-burger { display: flex; }
	.ir-nav-scrim { display: block; }

	/* グローバルナビ＝上から下りるドロワー */
	.ir-primary-nav {
		position: absolute; top: 100%; left: 0; right: 0;
		flex-direction: column; align-items: stretch; gap: 0;
		background: #fff; padding: 6px 16px 18px;
		box-shadow: 0 18px 40px rgba(10,30,60,.20);
		border-radius: 0 0 16px 16px;
		transform: translateY(-14px); opacity: 0; visibility: hidden;
		transition: transform .24s ease, opacity .2s ease, visibility .24s;
		z-index: 101;
	}
	.ir-site-header.is-open .ir-primary-nav { transform: translateY(0); opacity: 1; visibility: visible; }
	.ir-nav-links { flex-direction: column; align-items: stretch; gap: 0; width: 100%; }
	.ir-nav-links li { border-bottom: 1px solid #f1f4f8; }
	.ir-nav-links a { display: block; padding: 15px 8px; font-size: .98rem; }
	.ir-nav-ctas { flex-direction: column; align-items: stretch; gap: 10px; width: 100%; margin-top: 14px; }
	.ir-primary-nav .ir-nav-cta { width: 100%; font-size: .95rem; padding: 14px; }
	.ir-primary-nav .ir-nav-cta--ghost { padding: 12.5px; }

	/* ハンバーガー → × */
	.ir-site-header.is-open .ir-burger__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
	.ir-site-header.is-open .ir-burger__bar:nth-child(2) { opacity: 0; }
	.ir-site-header.is-open .ir-burger__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}
/* === フッター === */
.ir-site-footer { background: #0f1b2d; color: #c3ccd8; }
.ir-footer__inner { display: grid; grid-template-columns: 1.2fr 2fr; gap: 40px; padding: 56px 20px 40px; }
.ir-footer__logo img { display: block; filter: brightness(0) invert(1); opacity: .95; }
.ir-footer__tagline { margin: 12px 0 20px; font-weight: 700; color: #fff; font-size: .95rem; }
.ir-footer__company { margin: 0; display: grid; gap: 12px; }
.ir-footer__company div { display: grid; grid-template-columns: 76px 1fr; gap: 10px; font-size: .84rem; line-height: 1.7; }
.ir-footer__company dt { color: #8b98a8; font-weight: 600; margin: 0; }
.ir-footer__company dd { margin: 0; color: #dbe2ea; }
.ir-footer__corp { margin: 18px 0 0; }
.ir-footer__corp a { color: #6db3ff; text-decoration: none; font-size: .85rem; font-weight: 600; }
.ir-footer__corp a:hover { text-decoration: underline; }
.ir-footer__nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.ir-footer__heading { color: #fff; font-weight: 700; font-size: .9rem; margin: 0 0 14px; padding-bottom: 10px; border-bottom: 1px solid rgba(255,255,255,.12); }
.ir-footer__nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ir-footer__nav a { color: #c3ccd8; text-decoration: none; font-size: .86rem; }
.ir-footer__nav a:hover { color: #fff; }
.ir-footer__bottom { border-top: 1px solid rgba(255,255,255,.1); }
.ir-copyright { margin: 0; padding: 18px 20px; text-align: center; font-size: .78rem; color: #8b98a8; letter-spacing: .02em; }
@media (max-width: 860px) {
	.ir-footer__inner { grid-template-columns: 1fr; gap: 32px; padding: 40px 20px 32px; }
	.ir-footer__nav { gap: 24px; }
}
@media (max-width: 520px) {
	.ir-footer__nav { grid-template-columns: 1fr 1fr; }
}

.ir-entry { padding: 32px 0; }
.ir-entry h1 { font-size: 1.8rem; line-height: 1.4; }
.ir-entry h2 { font-size: 1.4rem; margin-top: 2em; }
.ir-entry h3 { font-size: 1.15rem; margin-top: 1.6em; }

/* === フォーム === */
/* ir-entry の padding:32px 0 が左右を0に潰すため、フォームは左右余白を明示回復（特にスマホで端に張り付くのを防ぐ）。 */
.ir-formpage { max-width: 760px; padding-left: 24px; padding-right: 24px; }
.ir-formpage__lead { color: #555; }
.ir-form { margin-top: 28px; }
.ir-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.ir-field { margin-bottom: 22px; }
.ir-field__label { display: block; font-weight: 700; color: #1a1a2e; margin-bottom: 8px; font-size: .95rem; }
.ir-req { display: inline-block; background: #e4405f; color: #fff; font-size: .68rem; font-weight: 700; padding: 2px 8px; border-radius: 4px; margin-left: 8px; vertical-align: middle; }
.ir-form input[type="text"],
.ir-form input[type="email"],
.ir-form input[type="tel"],
.ir-form textarea,
.ir-form select {
	width: 100%; padding: 13px 14px; border: 1px solid #cdd6e0; border-radius: 8px;
	font-size: 1rem; font-family: inherit; background: #fff; color: #1a1a2e; box-sizing: border-box;
}
.ir-form input:focus, .ir-form textarea:focus, .ir-form select:focus {
	outline: none; border-color: #1a6fd4; box-shadow: 0 0 0 3px rgba(26,111,212,.15);
}
.ir-form textarea { resize: vertical; }
.ir-field--agree { text-align: center; margin: 28px 0; }
.ir-field--agree label { font-weight: 600; }
.ir-field--agree input { margin-right: 6px; }
.ir-form__submit { text-align: center; margin-top: 32px; }
.ir-submit-btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 12px;
	min-width: 300px; padding: 18px 44px; border: none; cursor: pointer;
	font-family: inherit; font-size: 1.15rem; font-weight: 700; color: #fff; letter-spacing: .02em;
	background: linear-gradient(135deg, #2f8bff 0%, #1a6fd4 55%, #135bb0 100%);
	border-radius: 999px; box-shadow: 0 10px 24px rgba(26,111,212,.38);
	transition: transform .15s ease, box-shadow .2s ease, filter .2s ease;
	position: relative; overflow: hidden;
}
.ir-submit-btn::before {
	content: ""; position: absolute; inset: 0; border-radius: inherit;
	background: linear-gradient(135deg, rgba(255,255,255,.28), rgba(255,255,255,0) 45%);
	pointer-events: none;
}
.ir-submit-btn__arrow { transition: transform .2s ease; }
.ir-submit-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(26,111,212,.5); filter: saturate(1.05); }
.ir-submit-btn:hover .ir-submit-btn__arrow { transform: translateX(4px); }
.ir-submit-btn:active { transform: translateY(0); box-shadow: 0 6px 16px rgba(26,111,212,.4); }
.ir-submit-btn:focus-visible { outline: 3px solid rgba(26,111,212,.4); outline-offset: 3px; }
@media (max-width: 480px) {
	.ir-submit-btn { min-width: 0; width: 100%; padding: 16px 28px; font-size: 1.05rem; }
}
.ir-form__alert { background: #fdecef; border: 1px solid #e4405f; color: #b3243f; padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; }
.ir-thanks { text-align: center; }
.ir-thanks__cta { margin: 28px 0; }
.ir-thanks__back { margin-top: 24px; }

/* === コラム一覧（SNS採用アカデミー）=== */
.ir-archive__header { padding: 40px 0 8px; text-align: center; }
.ir-archive__header h1 { font-size: 1.9rem; margin: 0 0 8px; color: #1a1a2e; }
.ir-archive__header p { color: #5b6b80; margin: 0; }
.ir-cardgrid {
	list-style: none; margin: 28px 0 8px; padding: 0;
	display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px 24px;
}
.ir-card { margin: 0; }
.ir-card__link {
	display: flex; flex-direction: column; height: 100%;
	background: #fff; border: 1px solid #e7edf3; border-radius: 14px; overflow: hidden;
	text-decoration: none; color: inherit; transition: box-shadow .2s ease, transform .2s ease;
}
.ir-card__link:hover { box-shadow: 0 10px 28px rgba(26,111,212,.14); transform: translateY(-3px); }
.ir-card__thumb { display: block; aspect-ratio: 1200 / 630; background: #eef3f8; overflow: hidden; }
.ir-card__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ir-card__thumb--ph { display: block; width: 100%; height: 100%;
	background: linear-gradient(135deg, #e8f0fb 0%, #d7e6fa 100%); }
.ir-card__body { display: flex; flex-direction: column; gap: 8px; padding: 16px 18px 20px; flex: 1; }
.ir-card__date { font-size: .78rem; color: #8a97a8; }
.ir-card__title { font-size: 1.02rem; font-weight: 700; line-height: 1.5; color: #1a1a2e; }
.ir-card__link:hover .ir-card__title { color: var(--ir-accent); }
.ir-card__excerpt { font-size: .86rem; line-height: 1.7; color: #5b6b80; margin-top: 2px; }
@media (max-width: 860px) {
	.ir-cardgrid { grid-template-columns: repeat(2, 1fr); gap: 20px 16px; }
}
@media (max-width: 560px) {
	.ir-cardgrid { grid-template-columns: 1fr; gap: 18px; }
	.ir-archive__header { padding: 28px 0 4px; }
}
/* ページネーション */
.pagination, .nav-links { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin: 36px 0 8px; }
.nav-links .page-numbers {
	display: inline-flex; min-width: 40px; height: 40px; align-items: center; justify-content: center;
	padding: 0 12px; border: 1px solid #dce4ee; border-radius: 8px; text-decoration: none; color: #33475b; font-weight: 600;
}
.nav-links .page-numbers.current { background: var(--ir-accent); color: #fff; border-color: var(--ir-accent); }
.nav-links .page-numbers:hover:not(.current) { border-color: var(--ir-accent); color: var(--ir-accent); }

/* === コラム個別 === */
/* 読み物として最適な幅に制限（LPの1200pxは広すぎ＋アイキャッチ荒れの原因）。 */
.ir-single { max-width: 840px; }
.ir-breadcrumb { padding: 24px 0 0; font-size: .82rem; color: #8a97a8; }
.ir-breadcrumb a { color: #5b6b80; text-decoration: none; }
.ir-breadcrumb a:hover { color: var(--ir-accent); }
.ir-entry__header { margin: 10px 0 8px; }
.ir-entry__header h1 { font-size: 1.9rem; line-height: 1.45; margin: 0 0 10px; color: #1a1a2e; }
.ir-entry__meta { margin: 0; color: #8a97a8; font-size: .85rem; }
.ir-entry__thumb { margin: 20px 0 8px; }
.ir-entry__thumb img { width: 100%; height: auto; border-radius: 14px; display: block; }
.ir-entry__content { font-size: 1.02rem; }
.ir-entry__content p { margin: 1.2em 0; }
.ir-entry__content h2 {
	font-size: 1.4rem; line-height: 1.5; margin: 2.2em 0 .8em; padding: 10px 0 10px 16px;
	border-left: 5px solid var(--ir-accent); color: #1a1a2e; scroll-margin-top: 90px;
}
.ir-entry__content h3 { font-size: 1.15rem; margin: 1.8em 0 .6em; color: #1a1a2e; scroll-margin-top: 90px; }

/* 目次 */
.ir-toc { background: #f4f8fc; border: 1px solid var(--ir-line); border-radius: 14px; padding: 22px 26px; margin: 28px 0 8px; }
.ir-toc__head { font-weight: 700; color: var(--ir-head); margin: 0 0 12px; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; }
.ir-toc__head::before { content: ""; width: 4px; height: 18px; background: var(--ir-accent); border-radius: 2px; }
.ir-toc__list { margin: 0; padding: 0 0 0 1.2em; counter-reset: toc; list-style: none; }
.ir-toc__list > li { margin: 7px 0; position: relative; }
.ir-toc__list > li:not(.ir-toc__sub) { counter-increment: toc; }
.ir-toc__list > li:not(.ir-toc__sub)::before { content: counter(toc) "."; position: absolute; left: -1.2em; color: var(--ir-accent); font-weight: 700; font-size: .9em; }
.ir-toc__sub { padding-left: 1.2em; font-size: .92em; }
.ir-toc__sub::before { content: "-"; position: absolute; left: 0; color: #9fb2c8; }
.ir-entry__content .ir-toc a { color: #33475b; text-decoration: none; }
.ir-entry__content .ir-toc a:hover { color: var(--ir-accent); text-decoration: underline; }

/* 他の記事 */
.ir-related { max-width: var(--ir-max); margin: 8px auto 0; padding: 40px 0 8px; border-top: 1px solid var(--ir-line); }
.ir-related__head { font-size: 1.3rem; color: var(--ir-head); margin: 8px 0 20px; text-align: center; }
.ir-related .ir-cardgrid { margin-top: 0; }
.ir-related__more { text-align: center; margin: 24px 0 0; }
.ir-related__more a { color: var(--ir-accent); font-weight: 700; text-decoration: none; }
.ir-related__more a:hover { text-decoration: underline; }

/* 法務ページ（プライバシーポリシー等） */
.ir-legal__body h2 { font-size: 1.25rem; }
.ir-legal__date { margin-top: 2.5em; color: #8a97a8; font-size: .9rem; }
.ir-entry__content img { border-radius: 10px; }
.ir-entry__content a { color: var(--ir-accent); text-decoration: underline; }
.ir-entry__content ul, .ir-entry__content ol { padding-left: 1.4em; }
.ir-entry__content li { margin: .5em 0; }