/*
Theme Name: Gurutai
Theme URI: https://gurutai.tokyo
Author: Gurutai
Author URI: https://gurutai.tokyo
Description: Gurutai official block theme strictly adhering to Gurutai Grand Design System.
Version: 1.0.0
Requires at least: 6.2
Tested up to: 6.7
Requires PHP: 7.4
Text Domain: gurutai
*/

/* ==========================================================================
   Typography & @font-face Definitions (Line Seed JP & Plus Jakarta Sans)
   ========================================================================== */

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('./assets/fonts/PlusJakartaSans-Variable.woff2') format('woff2');
  size-adjust: 106%;
  ascent-override: 90%;
  descent-override: 24%;
  line-gap-override: 0%;
}

@font-face {
  font-family: 'lineSeedJP';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('./assets/fonts/LineSeedJP-Regular.woff2') format('woff2');
}

@font-face {
  font-family: 'lineSeedJP';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('./assets/fonts/LineSeedJP-Bold.woff2') format('woff2');
}

/* ==========================================================================
   Design System Tokens (Gurutai Grand Design System Official)
   ========================================================================== */

:root,
[data-theme="light"] {
  color-scheme: light;

  /* 🔤 Font Family Stacks */
  --font-english: "Plus Jakarta Sans";
  --font-japanese: "lineSeedJP";

  /* 🔤 Font Weight Tokens (厳格な3ウェイト管理: 500/600混入禁止) */
  --font-weight-normal: 400;
  --font-weight-bold: 700;
  --font-weight-heavy: 800;

  /* 🔤 Font Size Design Tokens (8-Scale System) */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 1.8rem;
  --font-size-hero: 2.5rem;

  /* 🔤 Typographic Tokens (Letter Spacing & Line Height) */
  --tracking-tight: -0.02em;
  --tracking-normal: 0.03em;
  --tracking-wide: 0.05em;

  --leading-none: 1;
  --leading-tight: 1.35;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* 📐 Spacing Design Tokens (4px / 8px Grid System) */
  --space-2xs: 0.15rem;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.5rem;
  --space-2xl: 2rem;
  --space-section: 3rem;

  /* 📐 Layout Framework Tokens */
  --container-wide: 1200px;
  --container-narrow: 900px;

  /* 不透明度スケール (Opacity Scale) */
  --opacity-subtle: 8%;
  --opacity-surface: 15%;
  --opacity-border: 25%;
  --opacity-overlay: 75%;

  /* 🎨 ブランド ＆ アクションカラー (Hex値は定義時のみ) */
  --logo-color: #ac2424;
  /* Gurutai Official Red (WCAG AA 6.93:1) */
  --logo-text-color: var(--logo-color);
  --logo-badge-bg: color-mix(in srgb, var(--logo-color) var(--opacity-subtle), transparent);
  --logo-badge-color: var(--logo-color);
  --logo-badge-border: color-mix(in srgb, var(--logo-color) var(--opacity-border), transparent);

  --primary-color: #c8511b;
  /* Bright Gurutai tone orange (WCAG AA 4.9:1) */
  --primary-hover: #a63c0e;
  /* Darker Gurutai Orange (WCAG AA 6.6:1) */
  --primary-light: color-mix(in srgb, var(--primary-color) var(--opacity-subtle), transparent);

  /* 🎨 サーフェス ＆ ニュートラルカラー */
  --bg-color: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-link: var(--primary-color);
  --text-link-hover: var(--primary-hover);

  /* 🎨 メタ情報用 役割別カラー (WCAG 2.1 AA 準拠) */
  --meta-area-color: #1e40af;
  /* 青系: Blue 800 */
  --meta-area-bg: color-mix(in srgb, var(--meta-area-color) var(--opacity-subtle), transparent);
  --meta-area-border: color-mix(in srgb, var(--meta-area-color) var(--opacity-border), transparent);

  --meta-category-color: #065f46;
  /* 緑系: Emerald 800 */
  --meta-category-bg: color-mix(in srgb, var(--meta-category-color) var(--opacity-subtle), transparent);
  --meta-category-border: color-mix(in srgb, var(--meta-category-color) var(--opacity-border), transparent);

  --meta-tag-color: #475569;
  /* 無彩色: Slate 600 */
  --meta-tag-bg: color-mix(in srgb, var(--meta-tag-color) var(--opacity-subtle), transparent);
  --meta-tag-border: color-mix(in srgb, var(--meta-tag-color) var(--opacity-border), transparent);
  --meta-tag-active-bg: #cbd5e1;
  --meta-tag-active-color: #0f172a;
  --meta-tag-active-border: #64748b;

  --border-color: #e2e8f0;
  --header-bg: color-mix(in srgb, var(--bg-color) 90%, transparent);

  /* 🎨 システム ＆ ステータスカラー */
  --color-do: #16a34a;
  --color-do-bg: color-mix(in srgb, var(--color-do) var(--opacity-subtle), transparent);
  --color-dont: #dc2626;
  --color-dont-bg: color-mix(in srgb, var(--color-dont) var(--opacity-subtle), transparent);
  --color-star: #f59e0b;
  --color-warning: #f59e0b;
  --overlay-bg: color-mix(in srgb, var(--text-main) var(--opacity-overlay), transparent);

  /* 📐 角丸 (Border Radius) */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* 📐 シャドウ (Elevation - 通常要素は影なしフラット化) */
  --shadow-primary: 0 6px 20px color-mix(in srgb, var(--primary-color) 35%, transparent);
  --shadow-primary-hover: 0 8px 24px color-mix(in srgb, var(--primary-color) 50%, transparent);
  --shadow-overlay: 0 20px 45px color-mix(in srgb, var(--text-main) 25%, transparent);
  --shadow-dropdown: 0 14px 34px -4px color-mix(in srgb, var(--text-main) 18%, transparent);
  --shadow-focus-ring: 0 0 0 3px color-mix(in srgb, var(--primary-color) 20%, transparent);

  /* ⏱️ トランジション (動的アニメーション禁止、色変化のみ) */
  --transition-fast: 0.15s cubic-bezier(0, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0, 0, 0.2, 1);
  --transition-theme: background-color 0.3s ease, color 0.3s ease;
}

/* ==========================================================================
   Base Styles & Reset (Strict Token Enforcement)
   ========================================================================== */

body {
  font-family: var(--font-english), var(--font-japanese), sans-serif;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  color: var(--text-main);
  background-color: var(--bg-color);
  line-height: var(--leading-relaxed);
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
.wp-block-heading,
.wp-block-post-title,
.wp-block-post-title a,
.gurutai-single-title {
  font-family: var(--font-english), var(--font-japanese), sans-serif;
  color: var(--text-main);
  line-height: var(--leading-tight);
  margin-top: 0;
  font-weight: var(--font-weight-bold);
  font-variation-settings: 'wght' 700;
}

h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

h4 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-link-hover);
}

b,
strong {
  font-weight: var(--font-weight-bold);
  font-variation-settings: 'wght' 700;
}

/* ==========================================================================
   Site Header
   ========================================================================== */

.gurutai-site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky, 100);
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-md) var(--space-xl);
}

.gurutai-header-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gurutai-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.gurutai-logo .logo-icon {
  width: 26px;
  height: 26px;
  object-fit: contain;
  flex-shrink: 0;
}

.gurutai-logo .logo-gurutai {
  height: 20px;
  width: auto;
  object-fit: contain;
  vertical-align: middle;
}

.gurutai-logo .logo-gurutai-dark {
  display: none;
}

.gurutai-logo .logo-gurutai-light {
  display: inline-block;
}

[data-theme="dark"] .gurutai-logo .logo-gurutai-dark {
  display: inline-block;
}

[data-theme="dark"] .gurutai-logo .logo-gurutai-light {
  display: none;
}

.gurutai-site-header .wp-block-navigation {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.gurutai-site-header .wp-block-navigation a {
  color: var(--text-main);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.gurutai-site-header .wp-block-navigation a:hover {
  background-color: var(--bg-secondary);
  color: var(--primary-color);
}

/* ==========================================================================
   Hero Section (Tokens strictly applied)
   ========================================================================== */

.gurutai-hero-section {
  position: relative;
  padding: var(--space-section) 0 var(--space-2xl);
  text-align: center;
}

.gurutai-hero-section::before {
  content: "";
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 540px;
  background-image: url('./assets/images/background.svg');
  background-position: top;
  background-repeat: no-repeat;
  background-size: cover;
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.6) 45%, rgba(0, 0, 0, 0));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0.6) 45%, rgba(0, 0, 0, 0));
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-2xs) var(--space-md);
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--text-muted);
}

.hero-heading {
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-heavy);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-sm);
}

.hero-heading-brand {
  color: var(--logo-color);
}

.hero-description {
  font-size: var(--font-size-md);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-2xl);
}

/* Search Panel */
.gurutai-search-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.gurutai-search-panel .wp-block-search__inside-wrapper {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-xs) var(--space-2xs) var(--space-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.gurutai-search-panel .wp-block-search__inside-wrapper:focus-within {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-focus-ring);
}

.gurutai-search-panel .wp-block-search__input {
  border: none !important;
  outline: none !important;
  background: transparent !important;
  font-size: var(--font-size-base);
  color: var(--text-main);
  padding: var(--space-sm) var(--space-xs);
}

.gurutai-search-panel .wp-block-search__button {
  background-color: var(--primary-color) !important;
  color: #ffffff !important;
  border-radius: var(--radius-sm) !important;
  border: none !important;
  padding: var(--space-sm) var(--space-xl) !important;
  font-size: var(--font-size-sm) !important;
  font-weight: var(--font-weight-bold) !important;
  transition: background-color var(--transition-fast) !important;
  cursor: pointer;
}

.gurutai-search-panel .wp-block-search__button:hover {
  background-color: var(--primary-hover) !important;
}

/* ==========================================================================
   Article Cards Grid (Strict Token & Static Hover Feedback)
   ========================================================================== */

.gurutai-cards-grid .wp-block-post-template {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)) !important;
  gap: var(--space-xl) !important;
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.gurutai-cards-grid .wp-block-post {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
  padding: 0 !important;
  margin: 0 !important;
}

/* Interactivity: Static Feedback Only (No translateY, No scale) */
.gurutai-cards-grid .wp-block-post:hover {
  border-color: var(--primary-color);
  background-color: var(--bg-card-hover);
}

.gurutai-cards-grid .wp-block-post-featured-image {
  margin: 0 !important;
  width: 100% !important;
  aspect-ratio: 1200 / 630;
  overflow: hidden;
  background-color: var(--bg-secondary);
}

.gurutai-cards-grid .wp-block-post-featured-image img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
}

.gurutai-cards-grid .card-body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.gurutai-cards-grid .wp-block-post-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  font-variation-settings: 'wght' 700;
  line-height: var(--leading-tight);
  margin: var(--space-xs) 0 !important;
}

.gurutai-cards-grid .wp-block-post-title a {
  color: var(--text-main);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.gurutai-cards-grid .wp-block-post-title a:hover {
  color: var(--primary-color);
}

.gurutai-cards-grid .wp-block-post-excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  line-height: var(--leading-normal);
  margin: 0 0 var(--space-md) 0 !important;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

/* Static Metadata: No borders/pill around static text (Strict Affordance Rule) */
.gurutai-cards-grid .card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
}

/* Taxonomy Pills: Pill shape for clickable categories/tags */
.wp-block-post-terms {
  display: flex !important;
  flex-wrap: wrap !important;
  align-items: center !important;
  gap: var(--space-xs) !important;
}

.wp-block-post-terms__separator {
  display: none !important;
}

.gurutai-badge,
.taxonomy-category a,
.wp-block-post-terms.taxonomy-category a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  background-color: var(--meta-category-bg);
  border: 1px solid var(--meta-category-border);
  color: var(--meta-category-color) !important;
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.taxonomy-category a:hover,
.wp-block-post-terms.taxonomy-category a:hover {
  background-color: color-mix(in srgb, var(--meta-category-color) var(--opacity-surface), transparent);
}

.taxonomy-post_tag a,
.wp-block-post-terms.taxonomy-post_tag a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  background-color: var(--meta-tag-bg);
  border: 1px solid var(--meta-tag-border);
  color: var(--meta-tag-color) !important;
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.taxonomy-post_tag a:hover,
.wp-block-post-terms.taxonomy-post_tag a:hover {
  background-color: color-mix(in srgb, var(--meta-tag-color) var(--opacity-surface), transparent);
}

/* ==========================================================================
   Pagination Styling
   ========================================================================== */

.wp-block-query-pagination {
  gap: var(--space-sm) !important;
}

.wp-block-query-pagination-numbers .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-sm);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.wp-block-query-pagination-numbers .page-numbers:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background-color: var(--primary-light);
}

.wp-block-query-pagination-numbers .page-numbers.current {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
}

.wp-block-query-pagination-previous,
.wp-block-query-pagination-next {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.wp-block-query-pagination-previous:hover,
.wp-block-query-pagination-next:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background-color: var(--primary-light);
}

/* ==========================================================================
   Single Post Detail Page
   ========================================================================== */

.gurutai-single-header {
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.gurutai-single-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  font-variation-settings: 'wght' 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-md);
}

/* Post Metadata (Date & Author) - Subdued style without bright accents */
.gurutai-single-header .wp-block-post-date,
.gurutai-single-header .wp-block-post-author {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: var(--font-weight-normal);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

.gurutai-single-header .wp-block-post-author__avatar img {
  border-radius: var(--radius-full);
  opacity: 0.75;
}

.gurutai-single-header .wp-block-post-author__name {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: var(--font-weight-normal);
}

.gurutai-single-content {
  max-width: 780px;
  margin: 0 auto;
  font-size: var(--font-size-base);
  line-height: var(--leading-relaxed);
}

/* Non-action Heading accents: Strict use of --logo-color */
.gurutai-single-content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-top: var(--space-section);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--logo-color);
  /* Brand color for non-action heading lines */
}

.gurutai-single-content h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-sm);
  padding-left: var(--space-sm);
  border-left: 4px solid var(--logo-color);
  /* Brand color for non-action accent */
}

.gurutai-single-content p {
  margin: var(--space-xl) 0;
}

.gurutai-single-content img {
  border-radius: var(--radius-md);
  height: auto;
}

.gurutai-single-content blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-md) var(--space-xl);
  border-left: 3px solid var(--logo-color);
  background-color: var(--bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
}

.gurutai-single-content blockquote p {
  margin: 0;
}

.gurutai-single-content ul,
.gurutai-single-content ol {
  padding-left: var(--space-xl);
  margin: var(--space-xl) 0;
}

.gurutai-single-content li {
  margin-bottom: var(--space-xs);
  line-height: var(--leading-relaxed);
}

.gurutai-single-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  font-size: var(--font-size-sm);
}

.gurutai-single-content th,
.gurutai-single-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  text-align: left;
}

.gurutai-single-content th {
  background-color: var(--bg-secondary);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
}

.gurutai-single-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--space-section) 0;
}

/* Post Navigation (Previous / Next Article Cards) */
.gurutai-post-navigation {
  margin-top: var(--space-section);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  width: 100%;
}

.gurutai-post-navigation .wp-block-post-navigation-link {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
  text-decoration: none;
}

.gurutai-post-navigation .wp-block-post-navigation-link:hover {
  border-color: var(--primary-color);
  background-color: var(--bg-card-hover);
}

.gurutai-post-navigation .post-navigation-link__label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.gurutai-post-navigation .wp-block-post-navigation-link a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
  line-height: var(--leading-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-decoration: none;
}

.gurutai-post-navigation .wp-block-post-navigation-link a:hover {
  color: var(--primary-color);
}

.gurutai-post-navigation .post-navigation-link-next {
  text-align: right;
  grid-column: 2;
}

@media (max-width: 639px) {
  .gurutai-post-navigation {
    grid-template-columns: 1fr;
  }
  .gurutai-post-navigation .post-navigation-link-next {
    text-align: left;
    grid-column: 1;
  }
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.gurutai-site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: var(--space-section) var(--space-xl) var(--space-2xl);
}

.gurutai-footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-2xl);
}

.footer-brand {
  max-width: 440px;
}

.footer-nav-groups {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xl);
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  min-width: 140px;
}

.footer-col-heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
  margin: 0;
}

.footer-col-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-col-list a {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

.footer-col-list a:hover {
  color: var(--primary-color);
}

.gurutai-footer-bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* ==========================================================================
   Responsive & Breakpoints System (Strict Grand Design System Compliance)
   ========================================================================== */

/* 🖥️ PC表示時 見出しフォントサイズ1段階引き上げ (Desktop Jump Rate Enhancement) */
@media (min-width: 768px) {
  :root {
    --font-size-md: 1.25rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 1.8rem;
    --font-size-2xl: 2.25rem;
    --font-size-hero: 3rem;
  }
}

/* 📱 モバイル最適化 (Mobile Breakpoint: <= 639px) */
@media (max-width: 639px) {
  .gurutai-site-header {
    padding: var(--space-sm) var(--space-md);
  }

  .gurutai-hero-section {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
  }

  .gurutai-cards-grid .wp-block-post-template {
    grid-template-columns: 1fr !important;
    gap: var(--space-lg) !important;
  }

  .gurutai-single-header {
    padding: var(--space-xl) var(--space-md) var(--space-lg);
  }

  .gurutai-single-content {
    padding: 0 var(--space-md);
  }

  .gurutai-site-footer {
    padding: var(--space-2xl) var(--space-md);
  }
}

/* ==========================================================================
   Static Pages & Forms (About, Terms, Privacy, Contact - Map Finder Unified)
   ========================================================================== */

.gurutai-page-main {
  width: 100%;
}

.static-page-container {
  max-width: var(--container-content);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-section);
}

.static-header {
  margin: 0;
  text-align: center;
}

.static-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
  margin-bottom: var(--space-md);
}

.static-lead {
  color: var(--text-muted);
  font-size: var(--font-size-md);
  line-height: var(--leading-relaxed);
  max-width: 640px;
  margin: 0 auto;
}

.static-article {
  display: flex;
  flex-direction: column;
  gap: var(--space-section);
  line-height: var(--leading-relaxed);
}

.static-section-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
  border-left: 4px solid var(--logo-color);
  padding-left: var(--space-md);
  margin-top: 0;
  margin-bottom: var(--space-xl);
}

.static-subsection-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  margin-top: 0;
  margin-bottom: var(--space-sm);
  color: var(--text-main);
}

.static-icon-accent {
  color: var(--primary-color);
  flex-shrink: 0;
  display: inline-flex;
}

.static-desc {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-top: 0;
  margin-bottom: var(--space-md);
}

.static-block-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.static-promo-box {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
}

.static-promo-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.static-promo-icon {
  display: block;
  margin-bottom: var(--space-sm);
}

.static-promo-icon-svg {
  color: var(--primary-color);
  margin: 0 auto;
}

.static-promo-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.static-step-card {
  background-color: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  text-align: center;
}

.static-step-number {
  width: 32px;
  height: 32px;
  background-color: var(--logo-badge-bg);
  color: var(--logo-color);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-bold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.static-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
}

.static-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-base);
  margin-top: var(--space-md);
}

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

.static-table th {
  text-align: left;
  padding: var(--space-md) var(--space-sm);
  color: var(--text-muted);
  font-weight: var(--font-weight-normal);
  width: 140px;
  vertical-align: top;
}

.static-table td {
  padding: var(--space-md) var(--space-sm);
  color: var(--text-main);
}

.static-summary-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.static-summary-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  color: var(--logo-color);
}

.static-summary-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
  margin: 0;
}

.static-summary-list {
  font-size: var(--font-size-base);
  color: var(--text-main);
  line-height: var(--leading-relaxed);
  padding-left: var(--space-xl);
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* ==========================================================================
   Contact Form Styles (Compatible with SSGForm & Contact Form 7)
   ========================================================================== */

.contact-form-wrapper {
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-field-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.contact-label {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
}

.contact-required {
  color: var(--logo-color);
  margin-left: var(--space-2xs);
}

.contact-input,
.contact-select,
.contact-textarea {
  width: 100%;
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-main);
  font-family: inherit;
  font-size: var(--font-size-base);
  box-sizing: border-box;
  transition: border-color var(--transition-fast);
}

.contact-input:focus,
.contact-select:focus,
.contact-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

.contact-honeypot {
  display: none !important;
}

/* Common Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff !important;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main) !important;
  border: 1px solid var(--border-color);
}

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

/* Back Link */
.back-link-wrapper {
  display: flex;
  justify-content: center;
  margin-top: var(--space-xl);
}

.back-home-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--text-muted) !important;
  text-decoration: none;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.back-home-btn:hover {
  color: var(--text-main) !important;
  background-color: var(--bg-card);
}