/*
Theme Name: Kreutzer Lab
Theme URI: https://kreutzer-lab.com/
Author: JIN
Author URI: https://kreutzer-lab.com/
Description: Quiet Authority - AIエージェントとの活動を記録するカスタムテーマ
Version: 1.3.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: kreutzer-lab
*/

/* ===== Reset ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ===== Design Tokens ===== */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-hero-bg: #eaf0f7;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b6b6b;
  --color-border: #d4d4d4;
  --color-accent: #2d6db5;

  --font-sans: "Inter", "Noto Sans JP", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --page-max: 1080px;
  --content-max: 720px;
  --section-gap: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* ===== Base ===== */
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.header-logo span {
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-left: 0.25rem;
}

.header-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.header-nav a {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color 150ms ease-out;
  padding: 0.25rem 0;
}

.header-nav a:hover {
  color: var(--color-accent);
}

.header-nav .current-menu-item a,
.header-nav .current_page_item a,
.header-nav .current-menu-ancestor a {
  color: var(--color-accent);
  border-bottom: 1.5px solid var(--color-accent);
  padding-bottom: 2px;
}

/* モバイルメニュートグル */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
  font-size: 1.5rem;
  line-height: 1;
}

/* ===== Hero (front-page) ===== */
.hero {
  position: relative;
  background: var(--color-hero-bg);
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  filter: blur(60px);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 6rem 2rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: var(--color-text);
  text-shadow:
    0 0 30px rgba(234, 240, 247, 0.9),
    0 0 60px rgba(234, 240, 247, 0.6);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: #444444;
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
  text-shadow:
    0 0 20px rgba(234, 240, 247, 0.9),
    0 0 40px rgba(234, 240, 247, 0.5);
}

/* ===== Section Common ===== */
.section {
  padding: var(--section-gap) 2rem;
}

.section-inner {
  max-width: var(--page-max);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.section-title-underline {
  display: inline-block;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.25rem;
}

/* ===== Activity Cards (front-page) ===== */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

a.activity-card {
  display: block;
  color: inherit;
  text-decoration: none;
}

.activity-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  transition:
    box-shadow 150ms ease-out,
    transform 150ms ease-out;
  cursor: pointer;
}

.activity-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.activity-card-number {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
}

.activity-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.activity-card-desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.section-activities {
  background: var(--color-bg-alt);
}

/* ===== Notes List (front-page) ===== */
.notes-list-home {
  max-width: var(--content-max);
}

.note-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding-left 150ms ease-out;
}

.note-item:first-child {
  padding-top: 0;
}

.note-item:hover {
  padding-left: 0.5rem;
}

.note-item a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.note-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.note-date {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.note-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg-alt);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.note-title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.note-item:hover .note-title {
  color: var(--color-accent);
}

.note-excerpt {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.notes-more {
  margin-top: 2.5rem;
}

.notes-more a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  transition: color 150ms ease-out;
}

.notes-more a:hover {
  color: var(--color-accent);
}

.notes-more a::after {
  content: " \2192";
}

/* ===== About ===== */
.about {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 6rem 2rem var(--section-gap);
}

.about-opening {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 5rem;
}

.about-section {
  margin-bottom: 5rem;
}

.about-section:last-child {
  margin-bottom: 0;
}

.about-section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.about-section p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.about-section p:last-child {
  margin-bottom: 0;
}

.about-section p.secondary {
  color: var(--color-text-secondary);
}

.about-cta {
  text-align: center;
  margin-top: 3rem;
  padding-bottom: 1rem;
}

.about-cta a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 150ms ease-out;
}

.about-cta a:hover {
  color: var(--color-accent);
}

.about-cta a::after {
  content: " \2192";
}

/* ===== Team ===== */
.team {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 6rem 2rem var(--section-gap);
}

.team-intro {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 4rem;
  max-width: var(--content-max);
}

.team-layer {
  margin-bottom: 4rem;
}

.team-layer:last-child {
  margin-bottom: 5rem;
}

.team-layer-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.team-card {
  text-align: center;
  padding: 2rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    box-shadow 150ms ease-out,
    transform 150ms ease-out;
  cursor: pointer;
}

.team-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.team-avatar-img {
  width: 72px;
  height: 72px;
  max-width: 72px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1.25rem;
  display: block;
}

.team-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

.team-name {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.team-role {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.team-philosophy {
  max-width: var(--content-max);
  border-top: 1px solid var(--color-border);
  padding-top: 3rem;
  margin-bottom: 3rem;
}

.team-philosophy p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text);
}

.team-link {
  max-width: var(--content-max);
}

.team-link a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  transition: color 150ms ease-out;
}

.team-link a:hover {
  color: var(--color-accent);
}

.team-link a::after {
  content: " \2192";
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 200ms ease-out,
    visibility 200ms ease-out;
}

.modal-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  max-width: 480px;
  width: calc(100% - 2rem);
  padding: 2.5rem 2rem 2rem;
  position: relative;
  transform: translateY(12px);
  transition: transform 200ms ease-out;
  text-align: center;
}

.modal-overlay.is-active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition:
    color 150ms ease-out,
    background 150ms ease-out;
}

.modal-close:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}

.modal-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1.25rem;
  display: block;
  background: var(--color-bg-alt);
}

.modal-avatar-fallback {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: none;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

.modal-name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.modal-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== Notes Archive ===== */
.notes {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 6rem 2rem var(--section-gap);
}

.notes-heading {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 1.5rem;
}

.notes-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 3rem;
}

/* カテゴリフィルター */
.notes-filter {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.notes-filter-btn {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.375rem 0.75rem;
  cursor: pointer;
  transition:
    color 150ms ease-out,
    border-color 150ms ease-out,
    background 150ms ease-out;
}

.notes-filter-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

.notes-filter-btn.is-active {
  color: var(--color-text);
  background: var(--color-bg-alt);
  border-color: var(--color-text);
}

/* 記事リスト */
.notes-list {
  list-style: none;
}

.notes-item {
  border-bottom: 1px solid var(--color-border);
}

.notes-item:first-child {
  border-top: 1px solid var(--color-border);
}

.notes-link {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.25rem 0;
  transition: color 150ms ease-out;
  color: inherit;
  text-decoration: none;
}

.notes-link:hover {
  color: var(--color-accent);
}

.notes-date {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  flex-shrink: 0;
  min-width: 5.5rem;
}

.notes-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  flex: 1;
}

.notes-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg-alt);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.notes-link:hover .notes-date {
  color: var(--color-accent);
}

/* ===== Single Article ===== */
.breadcrumb {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2rem 2rem 0;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  margin: 0 0.4em;
  color: #9ca3af;
}

.breadcrumb-current {
  color: var(--color-text-secondary);
}

.article-header {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 5rem 2rem 3rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.article-date {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.article-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg-alt);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}

.article-category a {
  color: inherit;
  text-decoration: none;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

/* 記事本文 */
.article-body {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 150ms ease-out;
}

.article-body a:hover {
  color: var(--color-text);
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.375rem;
  border-bottom: 2px solid var(--color-accent);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.article-body p {
  margin-bottom: 1.5rem;
  font-size: 1rem;
  line-height: 1.85;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
  line-height: 1.75;
}

.article-body blockquote {
  border-left: 3px solid var(--color-border);
  padding: 0.75rem 1.5rem;
  margin: 2rem 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--color-bg-alt);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
}

.article-body pre {
  background: #1a1a1a;
  color: #e5e5e5;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 2rem 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

.article-body pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* WPブロックエディタの画像 */
.article-body .wp-block-image {
  margin: 2rem 0;
}

.article-body .wp-block-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* 記事署名 */
.article-credit {
  text-align: right;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 2rem;
}

/* 振り返りセクション — 背景色 + トーンダウン（Quiet Authority） */
.post-reflection {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.post-reflection h2,
.post-reflection .wp-block-heading {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
  border-bottom: none;
  padding-bottom: 0;
  margin-top: 0;
}

.post-reflection p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 関連記事 */
.related-articles {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 3rem 2rem 0;
}
.related-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}
.related-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.related-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: color 150ms ease-out;
}
.related-item:first-child {
  border-top: 1px solid var(--color-border);
}
.related-item:hover {
  color: var(--color-accent);
}
.related-date {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}
.related-title {
  font-size: 0.875rem;
  font-weight: 500;
}

/* 回遊CTA */
.article-cta {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 2rem;
}

.article-cta-inner {
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0;
  text-align: center;
}

.cta-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.cta-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition:
    color 150ms ease-out,
    border-color 150ms ease-out;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
}

.cta-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ===== Contact ===== */
.contact {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 6rem 2rem var(--section-gap);
}

.contact-heading {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 1.25rem;
}

.contact-description {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 4rem;
}

/* CF7フォームスタイル */
.wpcf7 .wpcf7-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.wpcf7 .wpcf7-form > p {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.wpcf7 .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.wpcf7 .form-label,
.wpcf7 label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.wpcf7 input[type="text"],
.wpcf7 input[type="email"],
.wpcf7 textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: border-color 150ms ease-out;
  outline: none;
  width: 100%;
}

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

.wpcf7 input::placeholder,
.wpcf7 textarea::placeholder {
  color: var(--color-border);
}

.wpcf7 textarea {
  resize: vertical;
  min-height: 180px;
}

.wpcf7 input[type="submit"] {
  align-self: flex-start;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #ffffff;
  background: var(--color-text);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.875rem 2.5rem;
  cursor: pointer;
  transition:
    background 150ms ease-out,
    transform 150ms ease-out;
}

.wpcf7 input[type="submit"]:hover {
  background: #333333;
  transform: translateY(-1px);
}

.wpcf7 input[type="submit"]:active {
  transform: translateY(0);
}

.contact-note {
  margin-top: 2rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.contact-note a {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 150ms ease-out;
}

.contact-note a:hover {
  color: var(--color-accent);
}

/* ===== 404 ===== */
.error-404 {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 8rem 2rem var(--section-gap);
  text-align: center;
}

.error-404 h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.error-404 p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
}

.error-404 a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  transition: color 150ms ease-out;
}

.error-404 a:hover {
  color: var(--color-accent);
}

.error-404 a::after {
  content: " \2192";
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: var(--page-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  order: -1;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.footer-brand span {
  font-weight: 400;
  color: var(--color-text-secondary);
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
}

.footer-nav-link {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
  transition: color 150ms ease-out;
}

.footer-nav-link:hover {
  color: var(--color-text);
}

.footer-nav-sp {
  display: none;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* ===== WPデフォルト対応 ===== */
.alignwide {
  max-width: var(--page-max);
  margin-left: auto;
  margin-right: auto;
}

.alignfull {
  width: 100%;
  max-width: 100%;
}

.aligncenter {
  text-align: center;
}

.wp-caption {
  max-width: 100%;
}

.wp-caption-text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

.screen-reader-text {
  clip: rect(1px, 1px, 1px, 1px);
  position: absolute;
  height: 1px;
  width: 1px;
  overflow: hidden;
  word-wrap: normal;
}

/* ===== Responsive: Tablet ===== */
@media (max-width: 1024px) {
  :root {
    --section-gap: 5rem;
  }

  .activity-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .activity-grid .activity-card:first-child {
    grid-column: 1 / -1;
  }
}

/* ===== Responsive: Mobile ===== */
@media (max-width: 768px) {
  :root {
    --section-gap: 3.5rem;
  }
  .header-inner nav {
    position: absolute;
    width: 100%;
    left: 0;
  }

  .menu-toggle {
    display: block;
  }

  .header-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1rem;
  }

  .header-nav.is-open {
    display: flex;
  }

  .hero {
    min-height: 400px;
  }

  .hero-canvas {
    filter: blur(40px);
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .activity-grid {
    grid-template-columns: 1fr;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .notes-link {
    flex-direction: column;
    gap: 0.5rem;
  }

  .article-cta {
    display: none;
  }

  .cta-links {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }

  .cta-link {
    padding: 0.75rem 1.5rem;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
  }

  .footer {
    padding: 2rem 1.5rem 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.25rem;
  }

  .footer-nav {
    order: 0;
    justify-content: center;
    gap: 0;
  }

  .footer-nav-link {
    font-size: 0.875rem;
    color: #374151;
    padding: 0.5rem 0.875rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .footer-nav-sp {
    display: inline-flex;
  }

  .footer-bottom {
    order: 1;
    align-items: center;
    gap: 0.125rem;
  }

  .footer-copy {
    font-size: 0.6875rem;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}