/*
Theme Name: EC-MA Theme
Theme URI: https://example.com
Author: EC-MA Platform
Description: EC事業M&A仲介サイト向け自作クラシックテーマ。
Version: 3.0.0
Requires PHP: 8.2
Text Domain: ecma-theme
*/

/* ==========================================================================
   トークン（配色・余白）— モダンライト×SaaS風（Matheeロゴ準拠）
   ========================================================================== */
:root {
	--ecma-bg: radial-gradient(ellipse 1100px 520px at 50% -10%, #e6fbf8 0%, #ffffff 55%, #ffffff 100%);
	--ecma-surface: #ffffff;
	--ecma-surface-2: #f6f9fc;
	--ecma-navy-900: #0c1a34;
	--ecma-navy-700: #1d3358;
	--ecma-navy-500: #4a5f85;
	--ecma-navy-100: #eef3f8;
	--ecma-teal: #17b8ae;
	--ecma-teal-2: #0e9c93;
	--ecma-text: #16233a;
	--ecma-text-muted: #64748b;
	--ecma-border: #e4e9f0;
	--ecma-white: #ffffff;
	--ecma-danger: #d1453b;
	--ecma-max-width: 1120px;
	--ecma-radius: 10px;
}

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

html {
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	background: var(--ecma-bg) var(--ecma-white);
	background-attachment: fixed;
	color: var(--ecma-text);
	font-family: "Inter", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
	line-height: 1.7;
	-webkit-font-smoothing: antialiased;
}

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

a {
	color: var(--ecma-teal-2);
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

h1, h2, h3, h4 {
	color: var(--ecma-navy-900);
	line-height: 1.3;
	font-weight: 800;
	letter-spacing: -0.01em;
	margin: 0 0 0.6em;
}

.ecma-container {
	max-width: var(--ecma-max-width);
	margin: 0 auto;
	padding: 0 20px;
}

/* ==========================================================================
   ヘッダー
   ========================================================================== */
.ecma-header {
	background: rgba(255, 255, 255, 0.85);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	color: var(--ecma-navy-900);
	border-bottom: 1px solid var(--ecma-border);
	position: sticky;
	top: 0;
	z-index: 100;
}

.ecma-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 14px 20px;
}

.ecma-header__logo {
	color: var(--ecma-navy-900);
	font-size: 1.2rem;
	font-weight: 800;
	letter-spacing: 0.02em;
}

.ecma-header__logo:hover {
	text-decoration: none;
	opacity: 0.85;
}

.ecma-header__logo--image {
	display: flex;
	align-items: center;
}

.ecma-header__logo--image a {
	display: block;
}

.ecma-header__logo--image img {
	display: block;
	height: 34px;
	width: auto;
}

.ecma-nav-toggle {
	display: none;
}

.ecma-nav-toggle-label {
	display: none;
	cursor: pointer;
	padding: 6px;
}

.ecma-nav-toggle-label span,
.ecma-nav-toggle-label::before,
.ecma-nav-toggle-label::after {
	content: "";
	display: block;
	width: 24px;
	height: 2px;
	background: var(--ecma-navy-900);
	margin: 5px 0;
}

.ecma-nav {
	display: flex;
}

.ecma-nav ul {
	list-style: none;
	display: flex;
	align-items: center;
	gap: 24px;
	margin: 0;
	padding: 0;
}

.ecma-nav a {
	color: var(--ecma-text-muted);
	font-size: 0.95rem;
	font-weight: 500;
	transition: color .15s ease;
}

.ecma-nav a:hover {
	color: var(--ecma-navy-900);
	text-decoration: none;
}

.ecma-nav .ecma-nav__cta {
	background: linear-gradient(135deg, var(--ecma-teal), var(--ecma-teal-2));
	color: var(--ecma-white);
	padding: 9px 18px;
	border-radius: var(--ecma-radius);
	font-weight: 700;
	box-shadow: 0 4px 20px rgba(23, 184, 174, 0.28);
	transition: transform .15s ease, box-shadow .15s ease;
}

.ecma-nav .ecma-nav__cta:hover {
	text-decoration: none;
	color: var(--ecma-white);
	transform: translateY(-1px);
	box-shadow: 0 6px 26px rgba(23, 184, 174, 0.42);
}

/* ==========================================================================
   フッター
   ========================================================================== */
.ecma-footer {
	background: var(--ecma-navy-900);
	border-top: 1px solid var(--ecma-border);
	color: rgba(255, 255, 255, 0.65);
	margin-top: 64px;
	padding: 40px 0 24px;
	font-size: 0.85rem;
}

.ecma-footer strong {
	color: var(--ecma-white);
}

.ecma-footer a {
	color: rgba(255, 255, 255, 0.65);
}

.ecma-footer a:hover {
	color: var(--ecma-teal);
}

.ecma-footer__legal {
	margin-top: 20px;
	font-size: 0.85rem;
}

.ecma-footer__legal a {
	color: rgba(255, 255, 255, 0.65);
}

.ecma-footer__copy {
	margin-top: 16px;
	color: rgba(255, 255, 255, 0.35);
}

/* ==========================================================================
   共通コンポーネント
   ========================================================================== */
.ecma-section {
	padding: 64px 0;
}

.ecma-section--muted {
	background: var(--ecma-surface-2);
	border-top: 1px solid var(--ecma-border);
	border-bottom: 1px solid var(--ecma-border);
}

.ecma-hero__inner {
	display: flex;
	align-items: center;
	gap: 48px;
}

.ecma-hero__content {
	flex: 1 1 480px;
	min-width: 0;
}

.ecma-hero__visual {
	flex: 1 1 420px;
	display: flex;
	justify-content: center;
	align-items: center;
}

.ecma-hero__visual img {
	max-width: 100%;
	width: 560px;
	height: auto;
	filter: drop-shadow(0 30px 60px rgba(23, 184, 174, 0.18));
}

.ecma-hero-heading {
	display: flex;
	align-items: center;
	gap: 14px;
	flex-wrap: wrap;
}

.ecma-hero-heading h1 {
	margin: 0;
	font-size: 3.1rem;
	font-weight: 800;
	letter-spacing: -0.02em;
}

.ecma-hero-heading .ecma-badge {
	background: none;
	color: var(--ecma-teal-2);
	padding: 0;
	border-radius: 0;
	margin-right: 0;
	font-size: 0.8rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
}

.ecma-lead {
	color: var(--ecma-text-muted);
	font-size: 1.08rem;
	max-width: 640px;
}

.ecma-btn {
	display: inline-block;
	padding: 13px 30px;
	border-radius: var(--ecma-radius);
	font-weight: 700;
	background: linear-gradient(135deg, var(--ecma-teal), var(--ecma-teal-2));
	color: var(--ecma-white);
	border: 1px solid transparent;
	box-shadow: 0 6px 28px rgba(23, 184, 174, 0.3);
	transition: transform .15s ease, box-shadow .15s ease;
}

.ecma-btn:hover {
	color: var(--ecma-white);
	text-decoration: none;
	transform: translateY(-2px);
	box-shadow: 0 10px 34px rgba(23, 184, 174, 0.42);
}

.ecma-btn--outline {
	background: var(--ecma-white);
	color: var(--ecma-navy-900);
	border-color: var(--ecma-border);
	box-shadow: 0 2px 10px rgba(15, 32, 61, 0.06);
}

.ecma-btn--outline:hover {
	background: var(--ecma-surface-2);
	border-color: var(--ecma-navy-500);
	transform: translateY(-2px);
	box-shadow: 0 2px 10px rgba(15, 32, 61, 0.06);
}

.ecma-btn-row {
	display: flex;
	gap: 12px;
	flex-wrap: wrap;
	margin-top: 24px;
}

.ecma-badge {
	display: inline-block;
	background: var(--ecma-navy-100);
	color: var(--ecma-navy-700);
	font-size: 0.75rem;
	font-weight: 700;
	padding: 3px 10px;
	border-radius: 999px;
	margin-right: 6px;
}

.ecma-badge--outline {
	background: transparent;
	border: 1px solid var(--ecma-border);
	color: var(--ecma-text-muted);
	font-weight: 600;
}

/* プラットフォームバッジ：各ECのイメージカラー（薄め） */
.ecma-badge--platform-amazon {
	background: #ffe0a3;
	color: #8a5500;
}

.ecma-badge--platform-rakuten {
	background: #f5b8b8;
	color: #8f0000;
}

.ecma-badge--platform-yahoo {
	background: #ffb8c6;
	color: #a30021;
}

.ecma-badge--platform-shopify {
	background: #d3e8b0;
	color: #3f5f1f;
}

/* ==========================================================================
   案件一覧 絞り込みフォーム
   ========================================================================== */
.ecma-filter-form {
	background: var(--ecma-surface);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	padding: 24px;
	margin-top: 24px;
	box-shadow: 0 20px 40px -30px rgba(15, 32, 61, 0.18);
}

.ecma-filter-form__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 16px 20px;
}

.ecma-filter-form label {
	display: block;
	font-weight: 700;
	font-size: 0.85rem;
	margin-bottom: 6px;
	color: var(--ecma-text-muted);
}

.ecma-filter-form select,
.ecma-filter-form input[type="text"],
.ecma-filter-form input[type="number"] {
	width: 100%;
	padding: 9px 10px;
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	font-size: 0.95rem;
	font-family: inherit;
	background: var(--ecma-white);
	color: var(--ecma-text);
}

.ecma-filter-form select:focus,
.ecma-filter-form input:focus {
	outline: none;
	border-color: var(--ecma-teal);
	box-shadow: 0 0 0 3px rgba(23, 184, 174, 0.15);
}

.ecma-filter-form__range {
	display: flex;
	align-items: center;
	gap: 8px;
}

/* ==========================================================================
   案件カード
   ========================================================================== */
.ecma-anken-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
	margin-top: 32px;
}

.ecma-anken-card {
	background: var(--ecma-surface);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	padding: 20px;
	display: flex;
	flex-direction: column;
	gap: 8px;
	box-shadow: 0 20px 40px -30px rgba(15, 32, 61, 0.2);
	transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.ecma-anken-card:hover {
	transform: translateY(-4px);
	border-color: rgba(23, 184, 174, 0.4);
	box-shadow: 0 24px 48px -26px rgba(15, 32, 61, 0.24);
}

.ecma-anken-card__title {
	font-size: 1.05rem;
	color: var(--ecma-navy-900);
	margin: 4px 0;
}

.ecma-anken-card__meta {
	list-style: none;
	margin: 8px 0;
	padding: 0;
	font-size: 0.85rem;
	color: var(--ecma-text-muted);
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.ecma-anken-card__meta strong {
	color: var(--ecma-text);
}

.ecma-anken-card__excerpt {
	font-size: 0.9rem;
	color: var(--ecma-text-muted);
}

.ecma-anken-card__favorite {
	margin-top: 4px;
}

.ecma-anken-heading {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	flex-wrap: wrap;
}

.ecma-favorite-btn {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	background: var(--ecma-white);
	border: 1px solid var(--ecma-border);
	border-radius: 999px;
	padding: 6px 14px;
	font-size: 0.85rem;
	color: var(--ecma-text-muted);
	cursor: pointer;
}

.ecma-favorite-btn:hover {
	text-decoration: none;
	border-color: var(--ecma-teal);
	color: var(--ecma-teal-2);
}

.ecma-favorite-btn.is-favorited {
	background: rgba(23, 184, 174, 0.1);
	border-color: var(--ecma-teal);
	color: var(--ecma-teal-2);
	font-weight: 700;
}

.ecma-favorite-btn:disabled {
	opacity: 0.6;
	cursor: default;
}

.ecma-anken-empty {
	background: var(--ecma-surface);
	border: 1px dashed var(--ecma-border);
	border-radius: var(--ecma-radius);
	padding: 32px;
	text-align: center;
	color: var(--ecma-text-muted);
}

/* ==========================================================================
   案件詳細
   ========================================================================== */
.ecma-detail-layer {
	background: var(--ecma-surface);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	padding: 24px;
	margin: 24px 0;
	box-shadow: 0 20px 40px -30px rgba(15, 32, 61, 0.18);
}

.ecma-detail-layer + .ecma-detail-layer {
	margin-top: 20px;
}

.ecma-detail-locked {
	background: rgba(23, 184, 174, 0.08);
	border: 1px solid rgba(23, 184, 174, 0.35);
	border-radius: var(--ecma-radius);
	padding: 24px;
	text-align: center;
}

.ecma-detail-locked p {
	color: var(--ecma-navy-900);
}

.ecma-dl {
	display: grid;
	grid-template-columns: 160px 1fr;
	gap: 10px 16px;
	margin: 0;
}

.ecma-dl dt {
	color: var(--ecma-text-muted);
	font-weight: 700;
}

.ecma-dl dd {
	margin: 0;
	color: var(--ecma-text);
}

/* ==========================================================================
   フォーム
   ========================================================================== */
.ecma-form {
	max-width: 640px;
}

.ecma-form p {
	margin: 0 0 18px;
}

.ecma-form label {
	display: block;
	font-weight: 700;
	margin-bottom: 6px;
	font-size: 0.9rem;
	color: var(--ecma-text-muted);
}

.ecma-form input[type="text"],
.ecma-form input[type="email"],
.ecma-form input[type="tel"],
.ecma-form input[type="number"],
.ecma-form select,
.ecma-form textarea {
	width: 100%;
	padding: 10px 12px;
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	font-size: 1rem;
	font-family: inherit;
	background: var(--ecma-white);
	color: var(--ecma-text);
}

.ecma-form input:focus,
.ecma-form select:focus,
.ecma-form textarea:focus {
	outline: none;
	border-color: var(--ecma-teal);
	box-shadow: 0 0 0 3px rgba(23, 184, 174, 0.15);
}

.ecma-form textarea {
	min-height: 140px;
	resize: vertical;
}

.ecma-form-note {
	background: var(--ecma-surface-2);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	padding: 20px;
	margin-bottom: 28px;
	font-size: 0.9rem;
	color: var(--ecma-text-muted);
}

/* ==========================================================================
   記事一覧・記事詳細
   ========================================================================== */
.ecma-post-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 24px;
	margin-top: 32px;
}

.ecma-post-card {
	background: var(--ecma-surface);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	overflow: hidden;
	display: flex;
	flex-direction: column;
	box-shadow: 0 20px 40px -30px rgba(15, 32, 61, 0.2);
	transition: transform .18s ease, border-color .18s ease;
}

.ecma-post-card:hover {
	transform: translateY(-4px);
	border-color: rgba(23, 184, 174, 0.4);
}

.ecma-post-card__thumb {
	display: block;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--ecma-navy-100);
}

.ecma-post-card__thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.ecma-post-card__body {
	padding: 18px 20px 20px;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.ecma-post-card__title {
	font-size: 1.05rem;
	margin: 4px 0;
}

.ecma-post-card__title a {
	color: var(--ecma-navy-900);
}

.ecma-post-card__excerpt {
	font-size: 0.9rem;
	color: var(--ecma-text-muted);
	margin: 0;
}

.ecma-post-card__date {
	font-size: 0.8rem;
	color: var(--ecma-text-muted);
}

.ecma-article {
	max-width: 760px;
}

.ecma-article__meta {
	color: var(--ecma-text-muted);
	font-size: 0.9rem;
}

.ecma-article__thumb {
	margin: 20px 0;
	border-radius: var(--ecma-radius);
	overflow: hidden;
}

.ecma-article__content {
	font-size: 1.02rem;
	line-height: 1.9;
}

.ecma-article__content h2 {
	margin-top: 2em;
}

.ecma-article__content h3 {
	margin-top: 1.6em;
}

.ecma-article__content p {
	margin: 0 0 1.4em;
}

.ecma-article__tags {
	margin-top: 24px;
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}

.ecma-cta-box {
	margin: 48px 0 24px;
	background: rgba(23, 184, 174, 0.08);
	border: 1px solid rgba(23, 184, 174, 0.35);
	border-radius: var(--ecma-radius);
	padding: 28px;
	text-align: center;
}

.ecma-cta-box p {
	color: var(--ecma-navy-900);
	max-width: 520px;
	margin: 0 auto;
}

.ecma-cta-box .ecma-btn-row {
	justify-content: center;
}

/* ==========================================================================
   メッセージ（スレッド）
   ========================================================================== */
.ecma-thread-list {
	list-style: none;
	margin: 24px 0 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 1px;
	background: var(--ecma-border);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	overflow: hidden;
}

.ecma-thread-list__item {
	background: var(--ecma-surface);
	padding: 14px 18px;
}

.ecma-thread-list__item a {
	display: flex;
	flex-direction: column;
	gap: 4px;
	color: var(--ecma-text);
}

.ecma-thread-list__item a:hover {
	text-decoration: none;
	color: var(--ecma-teal-2);
}

.ecma-thread-list__preview {
	font-size: 0.85rem;
	color: var(--ecma-text-muted);
}

.ecma-thread {
	margin-top: 24px;
}

.ecma-thread__messages {
	margin: 20px 0;
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.ecma-thread__message {
	background: var(--ecma-surface);
	border: 1px solid var(--ecma-border);
	border-radius: var(--ecma-radius);
	padding: 14px 16px;
	max-width: 640px;
}

.ecma-thread__message.is-mine {
	background: rgba(23, 184, 174, 0.08);
	border-color: rgba(23, 184, 174, 0.35);
	margin-left: auto;
}

.ecma-thread__message-meta {
	display: flex;
	justify-content: space-between;
	gap: 12px;
	font-size: 0.8rem;
	color: var(--ecma-text-muted);
	margin-bottom: 6px;
}

.ecma-thread__message p {
	margin: 0;
	white-space: pre-line;
}

.ecma-thread__form {
	max-width: 640px;
}

/* ==========================================================================
   404
   ========================================================================== */
.ecma-404 {
	text-align: center;
	padding: 96px 0;
}

/* ==========================================================================
   レスポンシブ（スマホ）
   ========================================================================== */
@media (max-width: 782px) {
	.ecma-nav-toggle-label {
		display: block;
	}

	.ecma-nav {
		display: none;
		width: 100%;
		order: 3;
	}

	.ecma-nav-toggle:checked ~ .ecma-nav {
		display: block;
	}

	.ecma-header__inner {
		flex-wrap: wrap;
	}

	.ecma-nav ul {
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: 12px 0;
	}

	.ecma-nav li {
		border-top: 1px solid var(--ecma-border);
	}

	.ecma-nav a {
		display: block;
		padding: 12px 4px;
	}

	.ecma-nav .ecma-nav__cta {
		display: inline-block;
		margin: 12px 4px;
	}

	.ecma-hero-heading h1 {
		font-size: 2.1rem;
	}

	.ecma-hero__inner {
		flex-direction: column;
		gap: 32px;
	}

	.ecma-hero__visual img {
		width: 100%;
		max-width: 360px;
	}

	.ecma-anken-grid,
	.ecma-post-grid {
		grid-template-columns: 1fr;
	}

	.ecma-filter-form__grid {
		grid-template-columns: 1fr;
	}

	.ecma-dl {
		grid-template-columns: 1fr;
	}

	.ecma-section {
		padding: 40px 0;
	}
}

@media (min-width: 783px) and (max-width: 1024px) {
	.ecma-anken-grid,
	.ecma-post-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}