/* ============================================
   sak1361.github.io — Common Stylesheet
   2ch/VIP Edition
   ============================================ */

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

:root {
  --color-primary: blue;
  --color-primary-light: #efefef;
  --color-link: blue;
  --color-link-visited: #660099;
  --color-link-active: red;
  --color-text: black;
  --color-text-secondary: #333333;
  --color-text-tertiary: #666666;
  --color-bg: #efefef;
  --color-card-bg: #efefef;
  --color-name-green: green;
  --color-name-blue: blue;
  --color-border: #cccccc;
  --color-border-dark: #333333;
  --font-main: "MS PGothic", "Hiragino Kaku Gothic Pro", "Meiryo", "IPAMonaPGothic", sans-serif;
  --font-aa: "MS PGothic", "IPAMonaPGothic", "Mona", monospace;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-xl: 0px;
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --max-width: 780px;
  --spacing-xs: 2px;
  --spacing-sm: 4px;
  --spacing-md: 8px;
  --spacing-lg: 12px;
  --spacing-xl: 16px;
  --spacing-2xl: 24px;
  --spacing-3xl: 32px;
}

/* ダークモード無効化 — 2chは常にライト */

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

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.4;
  font-size: 16px;
}

/* --- Language visibility (controlled by html[lang]) --- */
html[lang="ja"] [data-lang-en],
html[lang="en"] [data-lang-ja] {
  display: none !important;
}

/* --- Typography --- */
h1, h2, h3 {
  font-weight: bold;
  letter-spacing: 0;
  line-height: 1.4;
}

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

a:visited {
  color: var(--color-link-visited);
}

a:hover {
  color: var(--color-link-active);
  opacity: 1;
}

a:active {
  color: var(--color-link-active);
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.container--wide {
  max-width: 960px;
}

/* --- Language Switch --- */
.lang-switch {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--spacing-md);
}

.lang-switch button {
  background: var(--color-bg);
  color: var(--color-link);
  border: 1px solid var(--color-border);
  padding: 1px 8px;
  border-radius: 0;
  cursor: pointer;
  font-size: 12px;
  font-weight: normal;
  font-family: var(--font-main);
  transition: none;
  text-decoration: underline;
}

.lang-switch button:hover {
  color: var(--color-link-active);
  background: var(--color-bg);
}

/* --- Header / Hero (板トップ風) --- */
.site-header {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg);
  margin-bottom: 0;
}

.site-header__title {
  font-size: 20px;
  font-weight: bold;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0;
}

.site-header__subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: normal;
  max-width: 480px;
  margin: 0 auto;
}

/* --- App Cards (レス風) --- */
.app-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  max-width: var(--max-width);
  margin: 0 auto;
}

.app-card {
  background: var(--color-card-bg);
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: none;
  transition: none;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  border-radius: 0;
  border-bottom: 1px solid var(--color-border);
}

.app-card:hover {
  transform: none;
  box-shadow: none;
}

.app-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
  color: #fff;
  line-height: 1;
}

.app-card__icon--img {
  border-radius: 0;
  object-fit: cover;
  box-shadow: none;
}

.app-card__body {
  flex: 1;
  min-width: 0;
}

.app-card__name,
.app-card__name-link {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 2px;
  display: block;
}

.app-card__name-link {
  color: var(--color-link);
  text-decoration: underline;
}

.app-card__name-link:hover {
  color: var(--color-link-active);
  opacity: 1;
}

.app-card__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.app-card__links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
  flex-wrap: wrap;
}

.app-card__link {
  font-size: 12px;
  font-weight: normal;
  padding: 0;
  border-radius: 0;
  background: none;
  color: var(--color-link);
  border: none;
  text-decoration: underline;
  transition: none;
}

.app-card__link:hover {
  color: var(--color-link-active);
  opacity: 1;
}

/* Grid status messages */
.app-grid__status {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-tertiary);
}

/* --- Res header (2ch レス風) --- */
.res-header {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.res-header__num {
  font-weight: bold;
  color: var(--color-link);
}

.res-header__name {
  color: var(--color-name-green);
  font-weight: bold;
}

.res-header__name--sage {
  color: var(--color-name-blue);
  font-weight: bold;
}

.res-header__date {
  color: var(--color-text-tertiary);
}

/* --- AA art container --- */
.aa-art {
  font-family: "Saitamaar", "MS PGothic", "IPAMonaPGothic", "Mona", "Hiragino Kaku Gothic Pro", monospace;
  white-space: pre;
  line-height: 18px;
  font-size: 16px;
  overflow-x: auto;
  color: var(--color-text);
  margin: var(--spacing-md) 0;
  -webkit-text-size-adjust: none;
}

/* --- Section title (板名風) --- */
.section {
  padding: var(--spacing-lg) 0;
}

.section__title {
  font-size: 14px;
  font-weight: bold;
  text-align: center;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-border);
  border: none;
  color: var(--color-text);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

/* --- Separator line (2ch style) --- */
.thread-separator {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-md) 0;
}

/* --- Badge --- */
.hero-badge {
  display: none;
}

/* --- Footer --- */
.site-footer {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  color: var(--color-text-tertiary);
  font-size: 12px;
  border-top: 1px solid var(--color-border-dark);
  margin-top: var(--spacing-xl);
  background: var(--color-bg);
}

.site-footer a {
  color: var(--color-link);
}

.site-footer a:hover {
  color: var(--color-link-active);
}

/* --- Utilities --- */
.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }
.text-small { font-size: 12px; }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* --- Policy / Legal Pages --- */
.legal-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
  background: var(--color-bg);
}

.legal-page__back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: normal;
  margin-bottom: var(--spacing-lg);
  color: var(--color-link);
}

.legal-page h1 {
  font-size: 18px;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-dark);
}

.legal-page .updated {
  color: var(--color-text-tertiary);
  font-size: 12px;
  margin-bottom: var(--spacing-xl);
  display: block;
}

.legal-page h2 {
  font-size: 16px;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.legal-page p,
.legal-page ul {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.legal-page ul {
  padding-left: var(--spacing-lg);
}

.legal-page li {
  margin-bottom: var(--spacing-sm);
}

.legal-page li strong {
  color: var(--color-text);
}

.legal-page a {
  color: var(--color-link);
}

/* --- Policy Index (板のスレ一覧風) --- */
.policy-list {
  list-style: none;
  padding: 0;
  counter-reset: thread;
}

.policy-list li {
  margin-bottom: 0;
  border-bottom: 1px solid var(--color-border);
  counter-increment: thread;
  animation: fadeInUp 0.3s ease both;
}

.policy-list li:nth-child(2) { animation-delay: 0.06s; }
.policy-list li:nth-child(3) { animation-delay: 0.12s; }
.policy-list li:nth-child(4) { animation-delay: 0.18s; }
.policy-list li:nth-child(5) { animation-delay: 0.24s; }

.policy-list li:last-child {
  border-bottom: none;
}

.policy-list a {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: 0;
  transition: background-color 0.15s ease;
  color: var(--color-link);
  font-weight: bold;
  font-size: 14px;
}

.policy-list a::before {
  content: counter(thread) ":";
  color: var(--color-name-green);
  font-weight: bold;
  font-size: 12px;
  min-width: 20px;
}

.policy-list a:hover {
  background: #e4e4e4;
  opacity: 1;
}

.policy-list__icon {
  width: 40px;
  height: 40px;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.policy-list a:hover .policy-list__icon {
  transform: scale(1.08);
}

.policy-list__icon--img {
  border-radius: 0;
  object-fit: cover;
}

.policy-list__name {
  flex: 1;
}

.policy-list__arrow {
  color: var(--color-text-tertiary);
  font-size: 14px;
}

/* --- App Landing Page (まとめサイト/スレ風) --- */
.app-landing {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* >>1 ヒーロー（スレ立て風） */
.app-landing__hero {
  text-align: left;
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--color-bg);
  margin-bottom: 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  overflow: visible;
}

.app-landing__icon-wrap {
  flex-shrink: 0;
  cursor: pointer;
  display: inline-block;
}

.app-landing__icon-wrap:hover {
  animation: iconSlide 1s ease-in-out;
}

@keyframes iconSlide {
  0%   { transform: translateX(0);     opacity: 1; }
  30%  { transform: translateX(300px); opacity: 0; }
  31%  { transform: translateX(-300px); opacity: 0; }
  100% { transform: translateX(0);     opacity: 1; }
}

.app-landing__icon {
  border-radius: 0;
  box-shadow: none;
  display: block;
}

@keyframes slideOut {
  0%   { transform: translateX(0); opacity: 1; }
  35%  { transform: translateX(300px); opacity: 0; }
  36%  { transform: translateX(-300px); opacity: 0; }
  100% { transform: translateX(0); opacity: 1; }
}

.app-landing__hero-body {
  flex: 1;
}

.app-landing__res-header {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.app-landing__res-num {
  font-weight: bold;
  color: var(--color-link);
}

.app-landing__res-name {
  color: var(--color-name-green);
  font-weight: bold;
}

.app-landing__title {
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 0;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.app-landing__subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.app-landing__badge {
  display: inline-block;
  font-size: 14px;
  font-weight: bold;
  color: var(--color-link-active);
  text-decoration: underline;
  transition: none;
}

.app-landing__badge:hover {
  color: var(--color-link-active);
}

/* レス風セクション */
.app-landing__body {
  padding: 0;
  background: var(--color-bg);
  counter-reset: res 1;
}

.app-landing__body section {
  margin-bottom: 0;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  counter-increment: res;
  animation: fadeInUp 0.3s ease both;
}

.app-landing__body section:nth-child(1) { animation-delay: 0.05s; }
.app-landing__body section:nth-child(2) { animation-delay: 0.10s; }
.app-landing__body section:nth-child(3) { animation-delay: 0.15s; }
.app-landing__body section:nth-child(4) { animation-delay: 0.20s; }
.app-landing__body section:nth-child(5) { animation-delay: 0.25s; }

.app-landing__body h2 {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
  border-bottom: none;
  padding-bottom: 0;
}

.app-landing__body h2::before {
  content: ">>" counter(res) " ";
  color: var(--color-link);
  font-weight: bold;
}

.app-landing__body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.app-landing__features {
  list-style: none;
  padding: 0;
}

.app-landing__features li {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  padding: var(--spacing-xs) 0;
  padding-left: 1.2em;
  position: relative;
}

.app-landing__features li::before {
  content: ">";
  color: var(--color-name-green);
  font-weight: bold;
  position: absolute;
  left: 0;
}

.app-landing__features li strong {
  color: var(--color-text);
}

.app-landing__steps {
  padding-left: 1.5em;
}

.app-landing__steps li {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  padding: var(--spacing-xs) 0;
}

/* フッターリンク [角括弧] 風 */
.app-landing__links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: none;
  margin-top: 0;
  font-size: 12px;
}

.app-landing__links a {
  font-size: 12px;
  font-weight: normal;
  color: var(--color-link);
}

.app-landing__links a::before {
  content: "[";
  color: var(--color-text-tertiary);
}

.app-landing__links a::after {
  content: "]";
  color: var(--color-text-tertiary);
}

/* ============================================
   Modern enhancements (レスポンシブ・アニメーション)
   2ch の質感を保ちつつモダン技術を混ぜる
   ============================================ */

/* --- Responsive: モバイル最適化 --- */
@media (max-width: 600px) {
  .site-header__title {
    font-size: 18px;
  }

  .aa-art {
    font-size: 11px;
    line-height: 1.15;
  }

  .app-card {
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
  }

  .app-card__icon,
  .app-card__icon--img {
    width: 44px;
    height: 44px;
  }

  .app-card__name,
  .app-card__name-link {
    font-size: 13px;
  }

  .app-card__desc {
    font-size: 12px;
  }

  .res-header {
    font-size: 10px;
  }

  .section__title {
    font-size: 13px;
  }

  .app-landing__hero {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .app-landing__icon {
    width: 80px;
    height: 80px;
  }

  .app-landing__title {
    font-size: 18px;
  }

  .app-landing__features li,
  .app-landing__steps li,
  .app-landing__body p {
    font-size: 13px;
  }
}

/* アプリカードは常に縦並び（2chスレのレス風） */

/* --- Smooth hover transitions (さりげなく) --- */
.app-card {
  transition: background-color 0.15s ease;
}

.app-card:hover {
  background-color: #e4e4e4;
}

/* --- アイコン hover で微拡大 --- */
.app-card__icon--img {
  transition: transform 0.2s ease;
}

.app-card:hover .app-card__icon--img {
  transform: scale(1.05);
}

/* --- スクロールフェードイン --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.app-card {
  animation: fadeInUp 0.4s ease both;
}

.app-card:nth-child(2) { animation-delay: 0.08s; }
.app-card:nth-child(3) { animation-delay: 0.16s; }
.app-card:nth-child(4) { animation-delay: 0.24s; }
.app-card:nth-child(5) { animation-delay: 0.32s; }
.app-card:nth-child(6) { animation-delay: 0.40s; }

/* AA は SVG 画像で表示（テキストAAはフォント依存で崩れるため） */

/* --- セクションタイトルの左端にアクセント線 --- */
.section__title {
  position: relative;
  padding-left: 20px;
  text-align: left;
}

.section__title::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: green;
}

/* --- フッターリンクにホバーアンダーライン --- */
.site-footer a {
  text-decoration: none;
  position: relative;
}

.site-footer a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 1px;
  background: var(--color-link-active);
  transition: width 0.2s ease;
}

.site-footer a:hover::after {
  width: 100%;
}

/* --- Container query for future-proofing --- */
@supports (container-type: inline-size) {
  .app-grid {
    container-type: inline-size;
  }

  @container (min-width: 500px) {
    .app-card__desc {
      font-size: 14px;
    }
  }
}