@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ==========================================
   超プレミアムデザインシステム & 変数
   ========================================== */
:root {
  /* Colors - 鮮やかで未来的なパレット */
  --bg-primary: #f8fafc;
  --bg-secondary: rgba(255, 255, 255, 0.75);
  --bg-tertiary: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  
  /* グラデーション用カラー */
  --color-primary: #6366f1;       /* インディゴ */
  --color-secondary: #a855f7;     /* バイオレット */
  --color-accent: #06b6d4;        /* シアン */
  --color-accent-rose: #f43f5e;   /* ローズ */
  
  /* 多層的なソフトシャドウ (プレミアムシャドウ) */
  --shadow-sm: 0 2px 8px -1px rgba(99, 102, 241, 0.05);
  --shadow-md: 0 12px 24px -4px rgba(99, 102, 241, 0.04), 0 4px 12px -2px rgba(99, 102, 241, 0.02);
  --shadow-lg: 0 20px 40px -10px rgba(99, 102, 241, 0.08), 0 8px 16px -4px rgba(99, 102, 241, 0.03);
  --shadow-xl: 0 30px 60px -15px rgba(99, 102, 241, 0.12), 0 12px 24px -6px rgba(99, 102, 241, 0.04);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.25);
  
  /* ガラスモーフィズム枠線 */
  --glass-border: 1px solid rgba(255, 255, 255, 0.6);
  --glass-border-hover: 1px solid rgba(99, 102, 241, 0.25);
  
  /* 角丸 */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* トランジション */
  --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-normal: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
  
  --max-width: 1140px;
}

/* ==========================================
   ベース & リセット (リッチな背景テクスチャ)
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  /* 超微細なプレミアムドットパターン背景 */
  background-image: 
    radial-gradient(rgba(99, 102, 241, 0.03) 1.5px, transparent 1.5px),
    radial-gradient(rgba(6, 182, 212, 0.02) 1px, transparent 1px);
  background-size: 32px 32px, 16px 16px;
  background-position: 0 0, 8px 8px;
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* 背景に浮かぶ抽象的な光の球 (Blur Glows) */
body::before {
  content: '';
  position: absolute;
  top: 15%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.08) 0%, transparent 70%);
  z-index: -2;
  filter: blur(60px);
  pointer-events: none;
}

body::after {
  content: '';
  position: absolute;
  top: 60%;
  left: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
  z-index: -2;
  filter: blur(50px);
  pointer-events: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

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

/* ==========================================
   レイアウト・共通パーツのプレミアム化
   ========================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 900;
  text-align: center;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  position: relative;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 650px;
  margin: 0 auto 80px auto;
  font-weight: 400;
}

/* 高級感あふれるグラデーションタイトルアンダーライン */
.section-title::after {
  content: '';
  display: block;
  width: 64px;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  margin: 18px auto 0 auto;
  border-radius: var(--radius-full);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
}

/* ==========================================
   GLASSMORPHISM NAVBAR (超高品位ヘッダー)
   ========================================== */
.header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 64px);
  max-width: var(--max-width);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.08);
  transition: var(--transition-normal);
}

.header:hover {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 15px 35px -10px rgba(99, 102, 241, 0.12);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  padding: 0 24px;
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-dot {
  width: 7px;
  height: 7px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
  display: inline-block;
  box-shadow: var(--shadow-glow);
  animation: pulse-glow 2s infinite alternate;
}

@keyframes pulse-glow {
  0% { transform: scale(0.85); box-shadow: 0 0 4px rgba(99, 102, 241, 0.4); }
  100% { transform: scale(1.15); box-shadow: 0 0 12px rgba(99, 102, 241, 0.8); }
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: rgba(99, 102, 241, 0.05);
}

/* Active Link Indicator */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: var(--transition-normal);
  border-radius: var(--radius-full);
}

.nav-link:hover::after {
  width: 60%;
}

/* ==========================================
   HERO SECTION (圧倒的ビジュアルのヒーロー)
   ========================================== */
.hero {
  min-height: 95vh;
  display: flex;
  align-items: center;
  padding-top: 140px;
  padding-bottom: 80px;
  position: relative;
}

/* ヒーロー背後に浮かぶ光沢プレート */
.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -20%);
  width: 90%;
  max-width: var(--max-width);
  height: 70%;
  background: radial-gradient(circle at 100% 0%, rgba(6, 182, 212, 0.05) 0%, transparent 60%),
              radial-gradient(circle at 0% 100%, rgba(168, 85, 247, 0.06) 0%, transparent 60%);
  z-index: -1;
  border-radius: var(--radius-xl);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 80px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 32px;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(4px);
}

.hero-tag-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-primary);
  animation: pulse 2.5s infinite;
}

.hero-title {
  font-size: 4.25rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  line-height: 1.1;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
  max-width: 550px;
  font-weight: 400;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* プレミアムボタンスタイル */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* プライマリ：流れるグラデーションボタン */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.35);
  border: none;
  z-index: 1;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  z-index: -1;
  opacity: 0;
  transition: var(--transition-normal);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px -5px rgba(99, 102, 241, 0.45);
}

.btn-primary:hover::before {
  opacity: 1;
}

/* セカンダリ：ガラスボタン */
.btn-secondary {
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-primary);
  border: var(--glass-border);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(99, 102, 241, 0.2);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* 流動的なオーガニックモーフィングアバター (超絶かっこいいグラフィック) */
.hero-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-circle-bg {
  position: absolute;
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.12) 0%, transparent 65%);
  z-index: -1;
  animation: slow-pulse 10s ease-in-out infinite alternate;
}

@keyframes slow-pulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(1.1); opacity: 1; }
}

/* 二重のモーフィング・オーバルで立体的な質感を創出 */
.hero-avatar {
  width: 320px;
  height: 320px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  position: relative;
  z-index: 2;
  border: 6px solid rgba(255, 255, 255, 0.9);
  overflow: hidden;
  /* 有機的なモーフィングアニメーション */
  animation: morph-avatar 12s ease-in-out infinite alternate;
}

@keyframes morph-avatar {
  0% { border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%; }
  33% { border-radius: 70% 30% 50% 50% / 50% 60% 40% 50%; }
  66% { border-radius: 50% 50% 30% 70% / 60% 40% 60% 40%; }
  100% { border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%; }
}

/* アバター内側に更なる立体感を出すレイヤー */
.hero-avatar::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: inherit;
  pointer-events: none;
}

.avatar-fallback {
  font-size: 6rem;
  font-weight: 900;
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.06em;
  background: linear-gradient(to bottom, #ffffff 0%, rgba(255, 255, 255, 0.75) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  user-select: none;
  animation: float-slow 6s ease-in-out infinite alternate;
}

@keyframes float-slow {
  0% { transform: translateY(0px) scale(0.98); }
  100% { transform: translateY(-10px) scale(1.02); }
}

/* フローティングガラスバッジ */
.floating-badge {
  position: absolute;
  bottom: 10px;
  left: -20px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  border: var(--glass-border);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 3;
  animation: float-badge 8s ease-in-out infinite alternate;
}

.floating-badge-icon {
  font-size: 1.8rem;
  filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.3));
}

.floating-badge-text h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
}

.floating-badge-text p {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 2px;
}

@keyframes float-badge {
  0% { transform: translateY(0px) rotate(-1deg); }
  100% { transform: translateY(-16px) rotate(3deg); }
}

/* ==========================================
   ABOUT & SKILLS SECTION (モダンガラス＆グリッド)
   ========================================== */
.about {
  background-color: transparent;
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: flex-start;
}

.about-content h3 {
  font-size: 2rem;
  margin-bottom: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.about-text {
  color: var(--text-secondary);
  margin-bottom: 36px;
  font-size: 1.05rem;
}

/* プロフィール基本情報リストの超クールな表示 */
.about-info-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.about-info-item {
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.about-info-item:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: var(--shadow-md);
}

.about-info-label {
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}

.about-info-value {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.95rem;
  word-break: break-all;
}

/* スキルコンテナのプレミアム化 (ネオ・ガラスモルフィズム) */
.skills-container {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.skill-category {
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

/* スキルカードの上部に走る微細なアクセント光線 */
.skill-category::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0.6;
  transition: var(--transition-normal);
}

.skill-category:nth-child(2)::after {
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
}

.skill-category:nth-child(3)::after {
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-rose));
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.25);
}

.skill-category:hover::after {
  opacity: 1;
}

.skill-category-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 美しいパステルグラデーションバッジ */
.skill-badge {
  background: rgba(99, 102, 241, 0.04);
  border: 1px solid rgba(99, 102, 241, 0.1);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: var(--transition-fast);
}

#skill-backend .skill-badge {
  background: rgba(168, 85, 247, 0.04);
  border: 1px solid rgba(168, 85, 247, 0.1);
  color: var(--color-secondary);
}

#skill-design .skill-badge {
  background: rgba(6, 182, 212, 0.04);
  border: 1px solid rgba(6, 182, 212, 0.1);
  color: var(--color-accent);
}

.skill-badge:hover {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white !important;
  border-color: transparent;
  transform: scale(1.06) translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

#skill-backend .skill-badge:hover {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  box-shadow: 0 4px 12px rgba(168, 85, 247, 0.25);
}

#skill-design .skill-badge:hover {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.25);
}

/* ==========================================
   EXPERIENCE (洗練されたグラデーションタイムライン)
   ========================================== */
.timeline {
  max-width: 850px;
  margin: 0 auto;
  position: relative;
  padding-left: 48px;
}

/* グラデーション垂直ライン */
.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 4px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary) 50%, rgba(6, 182, 212, 0.1));
  border-radius: var(--radius-full);
}

.timeline-item {
  position: relative;
  margin-bottom: 60px;
  padding: 32px;
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.timeline-item:hover {
  transform: translateX(5px) translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.2);
}

/* 光る鼓動タイムラインドット */
.timeline-dot {
  position: absolute;
  left: -48px;
  top: 36px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 4px solid var(--color-primary);
  z-index: 2;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

/* タイムラインドット内部の光るインナーコア */
.timeline-dot::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
  border-color: var(--color-secondary);
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.6);
  transform: scale(1.15);
}

.timeline-item:hover .timeline-dot::after {
  background-color: var(--color-secondary);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.timeline-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.timeline-company {
  font-size: 0.95rem;
  color: var(--color-primary);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--color-secondary);
  font-weight: 700;
  background: rgba(168, 85, 247, 0.06);
  border: 1px solid rgba(168, 85, 247, 0.15);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

.timeline-body {
  color: var(--text-secondary);
  font-size: 1rem;
}

.timeline-body ul {
  margin-left: 24px;
  margin-top: 14px;
}

.timeline-body li {
  margin-bottom: 8px;
  position: relative;
  list-style: none;
}

/* カスタムリストマーカー（グラデーションドット） */
.timeline-body li::before {
  content: '✦';
  position: absolute;
  left: -20px;
  color: var(--color-primary);
  font-weight: 900;
}

/* ==========================================
   CONTACT SECTION (ネオガラス＆フォーム)
   ========================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 60px;
  align-items: flex-start;
}

.contact-info-wrapper {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-card {
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.contact-card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.2);
}

.contact-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid rgba(99, 102, 241, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.45rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.contact-card:nth-child(2) .contact-icon-box {
  background: rgba(6, 182, 212, 0.06);
  border-color: rgba(6, 182, 212, 0.1);
  color: var(--color-accent);
}

.contact-card:nth-child(3) .contact-icon-box {
  background: rgba(168, 85, 247, 0.06);
  border-color: rgba(168, 85, 247, 0.1);
  color: var(--color-secondary);
}

.contact-card:hover .contact-icon-box {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  border-color: transparent;
  box-shadow: 0 8px 16px rgba(99, 102, 241, 0.2);
}

.contact-card:nth-child(2):hover .contact-icon-box {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  box-shadow: 0 8px 16px rgba(6, 182, 212, 0.2);
}

.contact-card:nth-child(3):hover .contact-icon-box {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent-rose) 100%);
  box-shadow: 0 8px 16px rgba(168, 85, 247, 0.2);
}

.contact-card-title {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-card-value {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* お問い合わせフォームの超高品質化 */
.contact-form-wrapper {
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

/* フォーム上部アクセントグラデーションバー */
.contact-form-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
}

.form-group {
  margin-bottom: 28px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

/* 入力欄の超近未来エフェクト */
.form-control {
  width: 100%;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(99, 102, 241, 0.15);
  background-color: rgba(99, 102, 241, 0.02);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-inset);
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 5px rgba(99, 102, 241, 0.12), var(--shadow-md);
  transform: translateY(-1px);
}

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

/* ==========================================
   フッター (ミニマルで美しいデザイン)
   ========================================== */
.footer {
  background: var(--bg-secondary);
  border-top: var(--glass-border);
  padding: 60px 0;
  text-align: center;
  position: relative;
  backdrop-filter: blur(10px);
}

.footer-logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.footer-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-bottom: 32px;
}

.footer-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ==========================================
   完全レスポンシブデザイン (ブレイクポイント調整)
   ========================================== */
@media (max-width: 992px) {
  .container {
    padding: 0 24px;
  }
  
  .header {
    width: calc(100% - 32px);
    top: 12px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 60px;
    text-align: center;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-avatar {
    width: 280px;
    height: 280px;
  }
  
  .floating-badge {
    left: 10px;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }
  
  .section-title {
    font-size: 2.2rem;
  }
  
  .hero-title {
    font-size: 3.25rem;
  }
  
  .nav-list {
    display: none; /* スマホではシンプルにロゴクリックでHomeへの導線やセクションごとの閲覧を促す */
  }
  
  .about-info-list {
    grid-template-columns: 1fr;
  }
  
  .contact-form-wrapper {
    padding: 32px;
  }
}