/* ============================================================
   TDアプリ開発室 — デザインシステム v2
   ダークグラス深化: 夜空グラデ × 磨かれたグラス × 流体タイポ
   ============================================================ */

/* ===== Design Tokens ===== */
:root {
  /* ブランドカラー（#9575f8 は operator 提供アイコンの実測値） */
  --color-primary: #7c3aed;
  --color-primary-light: #a78bfa;
  --color-primary-dark: #5b21b6;
  --color-secondary: #4f46e5;
  --color-accent: #6366f1;
  --color-brand-icon: #9575f8;

  /* グラデーション */
  --gradient-brand: linear-gradient(135deg, #a78bfa, #7c3aed 45%, #6366f1);
  --gradient-bg: linear-gradient(160deg, #0f0a1a, #170d29 30%, #0e1225 65%, #0f0a1a);

  /* テキスト（WCAG AA: muted は 5.4:1 を確保） */
  --text-primary: #f1f0f5;
  --text-secondary: #a5a2b5;
  --text-muted: #8b88a0;
  --text-heading: #ffffff;

  /* グラス効果 v2 — 多層シャドウ + 内光沢 */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-hover: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-hover: rgba(167, 139, 250, 0.35);
  --glass-blur: 16px;
  --glass-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07), 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px
    -8px rgba(0, 0, 0, 0.4);
  --glass-shadow-hover: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 2px 4px rgba(0, 0, 0, 0.3), 0 20px
    48px -12px rgba(91, 33, 182, 0.35);
  --glass-strong-bg: rgba(255, 255, 255, 0.09);
  --glass-strong-border: rgba(255, 255, 255, 0.16);
  --glass-strong-blur: 20px;

  /* リンク */
  --color-link: #a78bfa;
  --color-link-hover: #c4b5fd;

  /* 流体タイポスケール */
  --font-display: clamp(2rem, 4.5vw + 1rem, 3.25rem);
  --font-title: clamp(1.6rem, 3vw + 0.75rem, 2.5rem);
  --font-h2: clamp(1.125rem, 1vw + 0.9rem, 1.3rem);
  --font-lead: clamp(1rem, 0.5vw + 0.9rem, 1.15rem);

  /* スペーシング */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  /* 角丸 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* トランジション */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  font-size: 15px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", sans-serif;
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  background: var(--gradient-bg);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

::selection {
  background: rgba(124, 58, 237, 0.45);
  color: #fff;
}

/* アンビエントブロブ */
body::before,
body::after {
  content: "";
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.32;
}

body::before {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #7c3aed 0%, transparent 70%);
  top: -110px;
  right: -110px;
  filter: blur(120px);
  animation: float-blob-1 24s ease-in-out infinite;
}

body::after {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, #4f46e5 0%, transparent 70%);
  bottom: -90px;
  left: -90px;
  filter: blur(120px);
  animation: float-blob-2 28s ease-in-out infinite;
}

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

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

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

/* キーボード操作の可視化 */
:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--color-primary-dark);
  color: #fff;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.skip-link:focus {
  top: 0;
  text-decoration: none;
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

main {
  flex: 1;
  padding: var(--space-2xl) 0 var(--space-3xl);
}

/* ===== Header — ロゴ入りグラスヘッダー ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 10, 26, 0.72);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.8rem 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: 0.02em;
}

.brand:hover {
  text-decoration: none;
  color: var(--color-primary-light);
}

.brand svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.hero .hero-mark {
  width: clamp(64px, 10vw, 88px);
  height: auto;
  margin: 0 auto var(--space-lg);
  filter: drop-shadow(0 8px 32px rgba(149, 117, 248, 0.45));
  animation: fade-in-up 0.7s var(--transition-slow) both;
}

.hero h1 {
  font-size: var(--font-display);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.01em;
  background: var(--gradient-brand);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.9rem;
  animation: fade-in-up 0.7s 0.1s var(--transition-slow) both;
}

.hero p {
  font-size: var(--font-lead);
  color: var(--text-secondary);
  animation: fade-in-up 0.7s 0.22s var(--transition-slow) both;
}

/* ===== Section 見出しリズム ===== */
.section {
  margin-bottom: var(--space-3xl);
}

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: var(--space-sm);
}

.section h2 {
  font-size: var(--font-h2);
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid rgba(124, 58, 237, 0.25);
}

/* ===== App Card v2 — 磨かれたグラスカード ===== */
.app-list {
  display: grid;
  gap: var(--space-lg);
}

.app-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), background var(--transition-normal), border-color
    var(--transition-normal), box-shadow var(--transition-normal);
}

.app-card:hover {
  transform: translateY(-3px);
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow-hover);
}

.app-card h2,
.app-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: var(--space-xs);
}

.app-card .tagline {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: var(--space-md);
}

/* カード先頭 — アプリアイコン + タイトル/タグライン */
.card-head {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.card-head h3 {
  margin-bottom: 0.15rem;
}

.card-head .tagline {
  margin-bottom: 0;
}

.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid var(--glass-strong-border);
  box-shadow: 0 6px 20px -6px rgba(0, 0, 0, 0.5);
  flex-shrink: 0;
}

.app-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.app-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  background: rgba(124, 58, 237, 0.14);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--radius-full);
  padding: 0.15rem 0.7rem;
}

.app-card .link {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast), gap var(--transition-normal);
}

.app-card .link:hover {
  gap: 0.65rem;
  text-decoration: none;
}

/* ===== About — 開発者紹介 ===== */
.about-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  box-shadow: var(--glass-shadow);
}

.about-card img {
  width: 84px;
  height: 84px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-strong-border);
  box-shadow: 0 8px 24px -6px rgba(91, 33, 182, 0.5);
  flex-shrink: 0;
}

.about-card .about-name {
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: var(--space-xs);
}

.about-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.about-card p + p {
  margin-top: var(--space-sm);
}

/* ソーシャルリンク — About のチップ型 */
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(124, 58, 237, 0.14);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.9rem;
  transition: color var(--transition-fast), border-color var(--transition-fast), background
    var(--transition-fast);
}

.social-links a:hover {
  text-decoration: none;
  color: var(--text-heading);
  border-color: var(--glass-border-hover);
  background: rgba(124, 58, 237, 0.24);
}

.social-links svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  flex-shrink: 0;
}

/* ===== App Page hero ===== */
.app-hero {
  text-align: center;
  padding: var(--space-xl) 0 var(--space-2xl);
}

.app-hero .app-icon--hero {
  width: 76px;
  height: 76px;
  border-radius: 18px;
  margin: 0 auto var(--space-md);
  border: 1px solid var(--glass-strong-border);
  box-shadow: 0 12px 36px -8px rgba(91, 33, 182, 0.55);
  animation: fade-in-up 0.7s var(--transition-slow) both;
}

.app-hero h1 {
  font-size: var(--font-title);
  font-weight: 800;
  background: var(--gradient-brand);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-sm);
  animation: fade-in-up 0.7s var(--transition-slow) both;
}

.app-hero .tagline {
  font-size: var(--font-lead);
  color: var(--text-secondary);
  animation: fade-in-up 0.7s 0.15s var(--transition-slow) both;
}

/* ===== スクリーンショット — フォンフレーム ===== */
.shots {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(62vw, 240px);
  gap: var(--space-lg);
  overflow-x: auto;
  padding: var(--space-sm) var(--space-xs) var(--space-lg);
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: rgba(167, 139, 250, 0.35) transparent;
}

.shot {
  scroll-snap-align: center;
}

.shot figure {
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-strong-border);
  background: rgba(255, 255, 255, 0.04);
  padding: 8px;
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.shot figure:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
}

.shot img {
  border-radius: calc(var(--radius-xl) - 8px);
}

.shot figcaption {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: var(--space-sm);
}

/* ===== Feature List — 個別グラスカード ===== */
.feature-list {
  list-style: none;
  display: grid;
  gap: var(--space-md);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), background var(--transition-normal), border-color
    var(--transition-normal);
}

.feature-list li:hover {
  transform: translateX(4px);
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
}

.feature-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
  line-height: 1.6;
}

.feature-text strong {
  display: block;
  color: var(--text-heading);
}

.feature-text span {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Store Buttons ===== */
.store-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  flex-direction: column;
  align-items: center;
  margin: var(--space-xl) 0;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  width: 100%;
  max-width: 300px;
  transition: opacity var(--transition-fast), transform var(--transition-fast), box-shadow
    var(--transition-normal);
}

.store-btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.store-btn--web,
.store-btn--google {
  background: var(--gradient-brand);
  color: var(--text-heading);
  border: 1px solid transparent;
  box-shadow: 0 8px 24px -8px rgba(124, 58, 237, 0.6);
}

.store-btn--web:hover,
.store-btn--google:hover {
  box-shadow: 0 12px 32px -8px rgba(124, 58, 237, 0.8);
  color: #fff;
}

.store-btn--apple {
  background: var(--glass-strong-bg);
  backdrop-filter: blur(var(--glass-strong-blur));
  -webkit-backdrop-filter: blur(var(--glass-strong-blur));
  border: 1px solid var(--glass-strong-border);
  color: var(--text-heading);
}

.store-btn--coming-soon {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  cursor: default;
  pointer-events: none;
}

/* ===== Table（プライバシー + アラーム表） ===== */
.privacy-page table,
table.privacy-page {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: var(--space-md);
  font-size: 0.9rem;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.privacy-page th,
.privacy-page td,
table.privacy-page th,
table.privacy-page td {
  border-bottom: 1px solid var(--glass-border);
  padding: 0.55rem 0.8rem;
  text-align: left;
  color: var(--text-primary);
}

.privacy-page tr:last-child th,
.privacy-page tr:last-child td,
table.privacy-page tr:last-child td {
  border-bottom: none;
}

.privacy-page th,
table.privacy-page th {
  background: rgba(124, 58, 237, 0.16);
  font-weight: 600;
  color: var(--text-heading);
}

/* ===== Privacy Page ===== */
.privacy-page h1 {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 0.25rem;
}

.privacy-page .last-updated {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-xl);
}

.privacy-page h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-top: var(--space-xl);
  margin-bottom: 0.75rem;
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid rgba(124, 58, 237, 0.25);
}

.privacy-page h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.25rem;
  margin-bottom: var(--space-sm);
}

.privacy-page p,
.privacy-page ul {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.privacy-page ul {
  padding-left: var(--space-lg);
}

.privacy-page li {
  margin-bottom: 0.25rem;
  color: var(--text-secondary);
}

/* ===== Section リンクリスト ===== */
.section ul:not(.feature-list) {
  padding-left: var(--space-lg);
}

.section li {
  margin-bottom: 0.25rem;
  color: var(--text-secondary);
}

/* ===== Footer ===== */
.site-footer {
  background: rgba(15, 10, 26, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-xl) 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.site-footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.site-footer .footer-brand svg {
  width: 18px;
  height: 18px;
}

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

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

/* フッターのソーシャルアイコン */
.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-sm) 0;
}

.footer-social a {
  display: inline-flex;
  color: var(--text-muted);
  padding: 0.3rem;
}

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

.footer-social svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.breadcrumb span {
  margin: 0 0.3rem;
}

/* ===== Scroll Reveal（JS 有効時のみ作動） ===== */
html.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--transition-slow), transform 0.7s var(--transition-slow);
}

html.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ===== Animations ===== */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-blob-1 {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  33% {
    transform: translate(-40px, 30px) scale(1.1);
  }

  66% {
    transform: translate(20px, -20px) scale(0.95);
  }
}

@keyframes float-blob-2 {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  33% {
    transform: translate(30px, -40px) scale(1.05);
  }

  66% {
    transform: translate(-20px, 25px) scale(0.9);
  }
}

/* ===== Reduced Motion — 動きの配慮 ===== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  body::before,
  body::after,
  .hero .hero-mark,
  .hero h1,
  .hero p,
  .app-hero .app-icon--hero,
  .app-hero h1,
  .app-hero .tagline {
    animation: none;
  }

  html.js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ===== Responsive — デスクトップ拡張 ===== */
@media (min-width: 768px) {
  html {
    font-size: 16px;
  }

  .app-list {
    grid-template-columns: 1fr 1fr;
  }

  .app-card {
    padding: var(--space-xl) var(--space-xl) var(--space-lg);
  }

  .shots {
    grid-auto-columns: 1fr;
    grid-auto-flow: row;
    grid-template-columns: repeat(3, 1fr);
    overflow-x: visible;
  }

  .privacy-page h1 {
    font-size: 1.75rem;
  }

  .store-buttons {
    flex-direction: row;
    justify-content: center;
  }

  .store-btn {
    width: auto;
    max-width: none;
  }

  body::before {
    width: 620px;
    height: 620px;
  }

  body::after {
    width: 520px;
    height: 520px;
  }
}