/* Noto Sans JP と Outfit フォントのインポート */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* ライトテーマの変数（デフォルト） */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent: #6366f1;
  --accent-secondary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --accent-light: rgba(99, 102, 241, 0.1);
  --border-color: #e2e8f0;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --hover-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.1), 0 10px 10px -6px rgba(99, 102, 241, 0.1);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* ダークテーマの変数 */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --accent: #818cf8;
  --accent-secondary: #22d3ee;
  --accent-gradient: linear-gradient(135deg, #818cf8 0%, #22d3ee 100%);
  --accent-light: rgba(129, 140, 248, 0.15);
  --border-color: #1f2937;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --hover-shadow: 0 20px 25px -5px rgba(129, 140, 248, 0.2), 0 10px 10px -6px rgba(129, 140, 248, 0.2);
}

/* リセット & ベーススタイル */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.5s ease, color 0.5s ease;
}

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

li {
  list-style: none;
}

/* コンテナ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ヘッダー / ナビゲーション */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(248, 250, 252, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

[data-theme="dark"] header {
  background-color: rgba(11, 15, 25, 0.8);
}

header.scrolled {
  padding: 12px 0;
  box-shadow: var(--card-shadow);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

/* アクションボタンコンテナ */
.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* アクションスイッチ（テーマ切り替え & QRコード） */
.theme-toggle-btn,
.qr-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition-smooth);
}

.theme-toggle-btn:hover,
.qr-toggle-btn:hover {
  background-color: var(--accent-light);
  border-color: var(--accent);
}

.theme-toggle-btn:hover {
  transform: rotate(15deg);
}

.qr-toggle-btn:hover {
  transform: translateY(-2px);
}

/* ヒーローセクション */
.hero {
  padding: 160px 0 100px;
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(99, 102, 241, 0.15);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 540px;
}

.cta-group {
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--hover-shadow);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--accent-light);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* アバターのプレースホルダー（CSSによる美しい装飾） */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  opacity: 0;
  transform: scale(0.9);
  animation: scaleUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.avatar-container {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  padding: 12px;
  background: var(--accent-gradient);
  box-shadow: var(--hover-shadow);
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-secondary);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 4px solid var(--bg-secondary);
}

/* デフォルトのアバタープレースホルダーデザイン */
.avatar-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 30%, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--accent);
}

.avatar-placeholder i {
  font-size: 5rem;
  margin-bottom: 8px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.avatar-placeholder span {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 1px;
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none; /* ユーザーが画像を追加したときにJSなどで切り替え可能 */
}

/* 背景の装飾的なサークル */
.hero-visual::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--accent-light);
  filter: blur(60px);
  z-index: -1;
  top: -40px;
  left: -40px;
}

/* セクションの共通定義 */
section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-subtitle {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

/* スクロールフェードインアニメーション用の設定 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 自己紹介セクション */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-info h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.about-info p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.profile-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.detail-value {
  font-size: 1rem;
  font-weight: 600;
}

.timeline {
  border-left: 2px solid var(--border-color);
  padding-left: 24px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 3px solid var(--accent);
  transition: var(--transition-smooth);
}

.timeline-item:hover::before {
  background: var(--accent);
  transform: scale(1.2);
}

.timeline-date {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}

.timeline-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* スキルセクション */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.skill-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.skill-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-smooth);
}

.skill-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
  border-color: rgba(99, 102, 241, 0.2);
}

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

.skill-icon {
  width: 56px;
  height: 56px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
  transition: var(--transition-smooth);
}

.skill-card:hover .skill-icon {
  background: var(--accent-gradient);
  color: #ffffff;
  transform: scale(1.1);
}

.skill-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.skill-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.skill-progress-bg {
  width: 100%;
  height: 6px;
  background-color: var(--bg-primary);
  border-radius: 99px;
  overflow: hidden;
}

.skill-progress-bar {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 99px;
  width: 0%; /* JSでアニメーション表示 */
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* プロジェクトセクション */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
}

.project-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
}

.project-visual {
  height: 200px;
  position: relative;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  z-index: 2;
  transition: var(--transition-smooth);
}

.project-placeholder i {
  font-size: 3rem;
  margin-bottom: 8px;
}

.project-placeholder span {
  font-weight: 600;
  font-size: 1.1rem;
}

.project-card:hover .project-placeholder {
  transform: scale(1.1);
}

.project-info {
  padding: 24px;
}

.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 10px;
  border-radius: 99px;
}

.project-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent);
}

.project-link:hover {
  gap: 10px;
}

/* お問い合わせセクション */
.contact-container {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 48px;
  box-shadow: var(--card-shadow);
}

.contact-info h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item-text h4 {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.contact-item-text p {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  background-color: var(--bg-secondary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* 問い合わせ成功アニメーション用 */
.form-success-message {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  animation: scaleUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.form-success-icon {
  width: 80px;
  height: 80px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.form-success-message h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.form-success-message p {
  color: var(--text-secondary);
}

/* フッター */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.social-links {
  display: flex;
  gap: 20px;
}

.social-link {
  width: 40px;
  height: 40px;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition-smooth);
}

.social-link:hover {
  background: var(--accent-gradient);
  color: #ffffff;
  transform: translateY(-3px);
}

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

/* キーフレームアニメーション */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
  100% {
    transform: translateY(0px);
  }
}

/* レスポンシブ設計 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .hero-title {
    font-size: 2.75rem;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact-container {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* シンプルにするためモバイルではリンク非表示（またはトグルにするが、ここではシンプルに隠してテーマ切り替えのみにする） */
  }
  nav {
    justify-content: space-between;
  }
  .header-actions {
    margin-left: auto;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .avatar-container {
    width: 260px;
    height: 260px;
  }
  .profile-details {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   QRコードモーダルのスタイル
   ========================================== */
.qr-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.qr-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.qr-modal-content {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  border-radius: 24px;
  padding: 40px;
  width: 100%;
  max-width: 440px;
  text-align: center;
  position: relative;
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.qr-modal.active .qr-modal-content {
  transform: scale(1);
}

.qr-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--text-secondary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  line-height: 1;
}

.qr-close-btn:hover {
  background-color: var(--accent-light);
  color: var(--text-primary);
}

.qr-modal h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.qr-modal-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.qr-code-wrapper {
  background-color: #ffffff; /* QRコードを読み取りやすくするための白色背景 */
  padding: 20px;
  border-radius: 16px;
  display: inline-block;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
}

/* qrcode.jsが生成するimg要素用 */
#qrcode img {
  display: block;
  margin: 0 auto;
}

.qr-url-display {
  font-size: 0.8rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 99px;
  color: var(--text-secondary);
  word-break: break-all;
  display: inline-block;
  max-width: 100%;
}