/*
Theme Name: MassFactory Original
Theme URI: https://massfactory.biz/
Author: Mass Factory, inc.
Author URI: https://massfactory.biz/
Description: シンプルでクリーンなオリジナルWordPressテーマ。日本語コンテンツに最適化。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: massfactory
Tags: minimal, japanese, clean, blog, responsive
*/

/* ===========================
   CSS Variables
   =========================== */
:root {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #595959;
  --color-border: #e8e4de;
  --color-accent: #2c2c2c;
  --color-link: #1a1a1a;
  --color-link-hover: #555;
  --font-serif: 'Noto Serif JP', 'Georgia', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-mono: 'Courier New', monospace;
  --max-width: 720px;
  --sidebar-width: 240px;
  --gap: 2rem;
  --transition: 0.2s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; scrollbar-gutter: stable; overflow-y: scroll; }
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-link-hover); }
ul, ol { padding-left: 1.5em; }

/* Skip Link */
.skip-link {
  position: absolute; top: -100%; left: 1rem;
  background: var(--color-text); color: #fff;
  padding: 0.5rem 1rem; font-size: 0.875rem; z-index: 9999;
}
.skip-link:focus { top: 0; }

/* Layout */
.site-container {
  max-width: calc(var(--max-width) + var(--sidebar-width) + var(--gap) * 3);
  margin: 0 auto; padding: 0 1.5rem;
}
.site-inner {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--gap);
  align-items: start;
  padding: 3rem 0 4rem;
}

/* Header */
.site-header { background: var(--color-surface); border-bottom: 1px solid var(--color-border); padding: 0 1.5rem; }
.site-header-inner {
  max-width: calc(var(--max-width) + var(--sidebar-width) + var(--gap) * 3);
  margin: 0 auto; display: flex; align-items: center;
  justify-content: space-between; padding: 1.5rem 0; gap: 2rem; flex-wrap: wrap;
}
.site-branding { flex-shrink: 0; }
.site-title { font-family: var(--font-serif); font-size: 1.25rem; font-weight: 600; letter-spacing: 0.02em; line-height: 1.2; }
.site-title a { color: var(--color-text); }
.site-description { font-size: 0.75rem; color: var(--color-text-muted); margin-top: 0.2rem; letter-spacing: 0.05em; }

/* Navigation */
.site-navigation { display: flex; align-items: center; gap: 2rem; }
.main-nav ul { list-style: none; padding: 0; display: flex; }
.main-nav ul li a {
  display: inline-block; padding: 0.4rem 0.9rem; font-size: 0.85rem;
  color: var(--color-text); letter-spacing: 0.03em; position: relative; transition: color var(--transition);
}
.main-nav ul li a::after {
  content: ''; position: absolute; bottom: 0; left: 0.9rem; right: 0.9rem;
  height: 1px; background: var(--color-text); transform: scaleX(0);
  transition: transform var(--transition); transform-origin: left;
}
.main-nav ul li a:hover::after,
.main-nav ul li.current-menu-item > a::after { transform: scaleX(1); }
.main-nav ul li { position: relative; }
.main-nav ul li ul {
  position: absolute; top: 100%; left: 0; background: var(--color-surface);
  border: 1px solid var(--color-border); min-width: 160px; flex-direction: column;
  display: none; z-index: 100; box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.main-nav ul li:hover > ul { display: flex; }
.main-nav ul li ul li a { padding: 0.5rem 1rem; font-size: 0.82rem; display: block; width: 100%; }
.main-nav ul li ul li a::after { display: none; }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.25rem; color: var(--color-text); }
.menu-toggle span { display: block; width: 22px; height: 1px; background: currentColor; margin: 5px 0; }

/* Header Search */
.header-search .search-form { display: flex; align-items: center; border: 1px solid var(--color-border); border-radius: 2px; overflow: hidden; }
.header-search .search-field { border: none; background: transparent; padding: 0.35rem 0.75rem; font-size: 0.82rem; font-family: var(--font-sans); outline: none; width: 140px; color: var(--color-text); }
.header-search .search-submit { border: none; background: transparent; cursor: pointer; padding: 0.35rem 0.6rem; color: var(--color-text-muted); font-size: 0.9rem; transition: color var(--transition); }
.header-search .search-submit:hover { color: var(--color-text); }

/* Main Content */
.site-main { min-width: 0; }

/* Post */
.post { background: var(--color-surface); padding: 2.5rem; margin-bottom: 2rem; border: 1px solid var(--color-border); }
.post:last-of-type { margin-bottom: 0; }
.post-header { margin-bottom: 1.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--color-border); }
.post-title { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 600; line-height: 1.4; letter-spacing: 0.01em; margin-bottom: 0.75rem; }
.post-title a { color: var(--color-text); }
.post-title a:hover { color: var(--color-text-muted); }
.post-meta { font-size: 0.78rem; color: var(--color-text-muted); display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; letter-spacing: 0.03em; }
.post-meta a { color: var(--color-text-muted); }
.post-meta a:hover { color: var(--color-text); }
.post-meta .sep { opacity: 0.4; }

/* Entry Content */
.entry-content { font-size: 0.97rem; line-height: 1.9; }
.entry-content h2 { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 600; margin: 2rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--color-border); }
.entry-content h3 { font-family: var(--font-serif); font-size: 1.1rem; margin: 1.5rem 0 0.75rem; }
.entry-content h4, .entry-content h5, .entry-content h6 { font-size: 1rem; font-weight: 600; margin: 1.25rem 0 0.5rem; }
.entry-content p { margin-bottom: 1.2rem; }
.entry-content p:last-child { margin-bottom: 0; }
.entry-content ul, .entry-content ol { margin-bottom: 1.2rem; }
.entry-content li { margin-bottom: 0.3rem; }
.entry-content blockquote { border-left: 3px solid var(--color-border); padding-left: 1.25rem; margin: 1.5rem 0; color: var(--color-text-muted); font-style: italic; }
.entry-content pre { background: #f4f2ef; border: 1px solid var(--color-border); padding: 1rem 1.25rem; overflow-x: auto; font-size: 0.85rem; margin-bottom: 1.2rem; border-radius: 2px; }
.entry-content code { font-family: var(--font-mono); font-size: 0.88em; background: #f4f2ef; padding: 0.1em 0.4em; border-radius: 2px; }
.entry-content pre code { background: none; padding: 0; }
.entry-content a { text-decoration: underline; text-underline-offset: 2px; text-decoration-color: var(--color-border); }
.entry-content a:hover { text-decoration-color: var(--color-text); }
.entry-content img { margin: 1.5rem auto; }
.entry-content table { width: 100%; border-collapse: collapse; margin-bottom: 1.2rem; font-size: 0.9rem; }
.entry-content th, .entry-content td { border: 1px solid var(--color-border); padding: 0.5rem 0.75rem; text-align: left; }
.entry-content th { background: #f4f2ef; font-weight: 600; }

/* Post Footer */
.post-footer { margin-top: 1.75rem; padding-top: 1.25rem; border-top: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; }
.read-more { font-size: 0.82rem; letter-spacing: 0.05em; color: var(--color-text-muted); display: inline-flex; align-items: center; gap: 0.3rem; transition: color var(--transition), gap var(--transition); }
.read-more:hover { color: var(--color-text); gap: 0.5rem; }
.post-tags { font-size: 0.78rem; color: var(--color-text-muted); }
.post-tags a { color: var(--color-text-muted); margin-right: 0.4rem; }
.post-tags a:hover { color: var(--color-text); }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-top: 2.5rem; font-size: 0.85rem; }
.pagination .page-numbers { display: inline-flex; align-items: center; justify-content: center; width: 2.2rem; height: 2.2rem; border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); transition: background var(--transition), color var(--transition); }
.pagination .page-numbers:hover, .pagination .page-numbers.current { background: var(--color-text); color: #fff; border-color: var(--color-text); }
.pagination .page-numbers.dots { border: none; background: none; }

/* Post Navigation */
.post-navigation { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2.5rem; }
.nav-previous, .nav-next { background: var(--color-surface); border: 1px solid var(--color-border); padding: 1.25rem 1.5rem; transition: border-color var(--transition); }
.nav-previous:hover, .nav-next:hover { border-color: var(--color-text); }
.nav-next { text-align: right; }
.nav-label { display: block; font-size: 0.72rem; color: var(--color-text-muted); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.3rem; }
.nav-title { font-family: var(--font-serif); font-size: 0.92rem; color: var(--color-text); line-height: 1.4; }

/* Sidebar */
.site-sidebar { min-width: 0; }
.widget { background: var(--color-surface); border: 1px solid var(--color-border); padding: 1.75rem; margin-bottom: 1.5rem; }
.widget:last-child { margin-bottom: 0; }
.widget-title { font-family: var(--font-serif); font-size: 0.88rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 1.2rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--color-border); }
.widget ul { list-style: none; padding: 0; }
.widget ul li { padding: 0.4rem 0; border-bottom: 1px solid var(--color-border); font-size: 0.85rem; }
.widget ul li:last-child { border-bottom: none; padding-bottom: 0; }
.widget ul li a { color: var(--color-text-muted); }
.widget ul li a:hover { color: var(--color-text); }
.widget .search-form { display: flex; border: 1px solid var(--color-border); border-radius: 2px; overflow: hidden; }
.widget .search-field { flex: 1; border: none; padding: 0.5rem 0.75rem; font-size: 0.85rem; font-family: var(--font-sans); outline: none; background: var(--color-bg); color: var(--color-text); min-width: 0; }
.widget .search-submit { border: none; background: var(--color-text); color: #fff; padding: 0.5rem 0.75rem; cursor: pointer; font-size: 0.82rem; font-family: var(--font-sans); }

/* Archive / Search headers */
.archive-header { background: var(--color-surface); border: 1px solid var(--color-border); padding: 2rem 2.5rem; margin-bottom: 2rem; }
.archive-title { font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: 0.5rem; }
.archive-description { font-size: 0.9rem; color: var(--color-text-muted); }
.search-header { background: var(--color-surface); border: 1px solid var(--color-border); padding: 1.5rem 2rem; margin-bottom: 2rem; font-size: 0.9rem; color: var(--color-text-muted); }
.search-header strong { color: var(--color-text); }

/* 404 */
.error-404 { text-align: center; padding: 4rem 2.5rem; }
.error-404 .error-code { font-family: var(--font-serif); font-size: 6rem; font-weight: 300; color: var(--color-border); line-height: 1; margin-bottom: 1rem; }
.error-404 .error-title { font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: 1rem; }
.error-404 .error-message { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 2rem; }

/* Comments */
.comments-area { margin-top: 2rem; }
.comments-title { font-family: var(--font-serif); font-size: 1.15rem; margin-bottom: 1.5rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--color-border); }
.comment-list { list-style: none; padding: 0; margin-bottom: 2rem; }
.comment { padding: 1.25rem; border: 1px solid var(--color-border); margin-bottom: 1rem; background: var(--color-surface); }
.comment-author { font-size: 0.85rem; font-weight: 600; margin-bottom: 0.5rem; }
.comment-meta { font-size: 0.78rem; color: var(--color-text-muted); margin-bottom: 0.75rem; }
.comment-content p { font-size: 0.9rem; margin-bottom: 0.5rem; }
.reply a { font-size: 0.78rem; color: var(--color-text-muted); text-decoration: underline; }
.comment-respond { margin-top: 2rem; }
.comment-reply-title { font-family: var(--font-serif); font-size: 1.1rem; margin-bottom: 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--color-border); }
.comment-form label { display: block; font-size: 0.82rem; color: var(--color-text-muted); margin-bottom: 0.3rem; }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea { width: 100%; border: 1px solid var(--color-border); padding: 0.6rem 0.75rem; font-size: 0.9rem; font-family: var(--font-sans); background: var(--color-bg); color: var(--color-text); outline: none; border-radius: 2px; margin-bottom: 1rem; }
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--color-text); }
.comment-form textarea { height: 140px; resize: vertical; }
.comment-form .submit { background: var(--color-text); color: #fff; border: none; padding: 0.65rem 2rem; font-size: 0.85rem; font-family: var(--font-sans); cursor: pointer; letter-spacing: 0.05em; border-radius: 2px; }
.comment-form .submit:hover { opacity: 0.75; }

/* Footer */
.site-footer { background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 2rem 1.5rem; }
.site-footer-inner { max-width: calc(var(--max-width) + var(--sidebar-width) + var(--gap) * 3); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.site-footer p { font-size: 0.78rem; color: var(--color-text-muted); letter-spacing: 0.03em; }
.site-footer a { color: var(--color-text-muted); text-decoration: underline; text-underline-offset: 2px; }
.site-footer a:hover { color: var(--color-text); }
.footer-nav ul { list-style: none; padding: 0; display: flex; gap: 1.25rem; flex-wrap: wrap; }
.footer-nav ul li a { font-size: 0.78rem; color: var(--color-text-muted); }
.footer-nav ul li a:hover { color: var(--color-text); }

/* Utility */
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(1px,1px,1px,1px); }
.no-posts { background: var(--color-surface); border: 1px solid var(--color-border); padding: 3rem 2.5rem; text-align: center; color: var(--color-text-muted); }
.alignleft { float: left; margin: 0 1.5rem 1rem 0; }
.alignright { float: right; margin: 0 0 1rem 1.5rem; }
.aligncenter { margin: 0 auto 1rem; display: block; }
.wp-caption { max-width: 100%; margin-bottom: 1rem; }
.wp-caption-text { font-size: 0.8rem; color: var(--color-text-muted); text-align: center; margin-top: 0.4rem; }

/* WordPress Block Editor */
.wp-block-image img { border-radius: 2px; }
.wp-block-quote { border-left: 3px solid var(--color-border); padding-left: 1.25rem; margin: 1.5rem 0; color: var(--color-text-muted); font-style: italic; }
.wp-block-separator { border: none; border-top: 1px solid var(--color-border); margin: 2rem 0; }

/* Responsive */
/* サイドバーなし（固定ページ等）は1カラム */
.no-sidebar .site-inner {
  grid-template-columns: 1fr;
}

@media (max-width: 900px) {
  .site-inner { grid-template-columns: 1fr; }
  .site-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
  .site-sidebar .widget { margin-bottom: 0; }
}
@media (max-width: 680px) {
  .menu-toggle { display: block; }
  .main-nav ul { display: none; flex-direction: column; border-top: 1px solid var(--color-border); padding-top: 0.5rem; margin-top: 0.5rem; }
  .main-nav ul.is-open { display: flex; }
  .main-nav ul li a { padding: 0.5rem 0; display: block; }
  .main-nav ul li a::after { display: none; }
  .main-nav ul li ul { position: static; display: block; border: none; box-shadow: none; border-left: 2px solid var(--color-border); margin-left: 1rem; }
  .site-sidebar { grid-template-columns: 1fr; }
  .post { padding: 1.5rem; }
  .post-navigation { grid-template-columns: 1fr; }
  .post-title { font-size: 1.25rem; }
  .error-404 .error-code { font-size: 4rem; }
  .site-footer-inner { flex-direction: column; align-items: flex-start; }
}

/* =====================================================
   Contact Form 7
   ===================================================== */
.wpcf7 {
  margin-top: 1.5rem;
}

.wpcf7-form p {
  margin-bottom: 1.25rem;
}

.wpcf7-form label {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}

.wpcf7-form input[type="text"],
.wpcf7-form input[type="email"],
.wpcf7-form input[type="tel"],
.wpcf7-form input[type="url"],
.wpcf7-form input[type="number"],
.wpcf7-form select,
.wpcf7-form textarea {
  display: block;
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 0.6rem 0.75rem;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
}

.wpcf7-form input[type="text"]:focus,
.wpcf7-form input[type="email"]:focus,
.wpcf7-form input[type="tel"]:focus,
.wpcf7-form input[type="url"]:focus,
.wpcf7-form textarea:focus {
  border-color: var(--color-text);
}

.wpcf7-form textarea {
  height: 160px;
  resize: vertical;
  line-height: 1.7;
}

.wpcf7-form input[type="submit"] {
  display: inline-block;
  background: var(--color-text);
  color: #fff;
  border: none;
  padding: 0.7rem 2.5rem;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  letter-spacing: 0.08em;
  cursor: pointer;
  border-radius: 2px;
  transition: opacity 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.wpcf7-form input[type="submit"]:hover {
  opacity: 0.75;
}

/* バリデーションエラー */
.wpcf7-not-valid {
  border-color: #c0392b !important;
}

.wpcf7-not-valid-tip {
  display: block;
  font-size: 0.78rem;
  color: #c0392b;
  margin-top: 0.3rem;
}

/* 送信結果メッセージ */
.wpcf7-response-output {
  margin-top: 1.25rem !important;
  padding: 0.75rem 1rem !important;
  border-radius: 2px !important;
  font-size: 0.85rem !important;
  border: 1px solid var(--color-border) !important;
}

.wpcf7-mail-sent-ok {
  border-color: #27ae60 !important;
  color: #27ae60 !important;
  background: #f0faf4 !important;
}

.wpcf7-mail-sent-ng,
.wpcf7-spam-blocked {
  border-color: #c0392b !important;
  color: #c0392b !important;
  background: #fdf0ef !important;
}

/* クイズ・チェックボックス等 */
.wpcf7-quiz,
.wpcf7-acceptance {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
}