/* ===================================
   リセットCSS & 基本設定
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: "M PLUS 1p", sans-serif;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   カラーパレット（CSS変数）
   =================================== */
:root {
  /* プライマリカラー（オレンジ系） */
  --main-orange: #FFA366;
  --deep-orange: #FF8553;
  --light-orange: #FFD4A3;

  /* セカンダリカラー */
  --white: #FFFFFF;
  --off-white: #FAFAFA;
  --light-gray: #F5F5F5;
  --gray: #6B7280;
  --dark-gray: #374151;

  /* ピンク系カラー */
  --main-pink: #FF8FA3;
  --light-pink: #FFC4D6;
  --deep-pink: #FF6B96;

  /* アクセントカラー */
  --cta-orange: #FF8553;
  --success-green: #10B981;
  --info-blue: #3B82F6;
  --warning-yellow: #FFB000;

  /* グラデーション */
  --hero-gradient: linear-gradient(135deg, #FFA366 0%, #FF9856 100%);
  --pink-gradient: linear-gradient(135deg, #FFC4D6 0%, #FF8FA3 100%);
  --sub-gradient: linear-gradient(90deg, #FFD4A3 0%, #FFA366 100%);
  --bg-gradient: linear-gradient(180deg, #FAFAFA 0%, #FFFFFF 100%);
  --button-gradient: linear-gradient(45deg, #FF8553 0%, #FFA366 100%);

  /* 互換性のための旧変数名 */
  --primary-orange: var(--main-orange);
  --primary-pink: var(--main-pink);
  --text-primary: var(--dark-gray);
  --text-secondary: var(--gray);
  --text-light: var(--gray);
  --bg-light: var(--off-white);
  --bg-gray: var(--light-gray);
  --border-color: var(--light-gray);
  --black: #000000;
  --success: var(--success-green);
  --warning: var(--warning-yellow);
  --danger: #dc3545;
  --gradient-orange: var(--hero-gradient);
  --gradient-pink: var(--pink-gradient);
}

/* ===================================
   タイポグラフィ
   =================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "M PLUS 1p", sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark-gray);
  letter-spacing: 0.05em;
}

/* デスクトップサイズ */
h1 {
  font-size: 48px;
}
h2 {
  font-size: 36px;
}
h3 {
  font-size: 28px;
}
h4 {
  font-size: 24px;
}
h5 {
  font-size: 20px;
}
h6 {
  font-size: 18px;
}

/* 本文 */
p {
  font-family: "M PLUS 1p", sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.8;
}

/* キャプション */
.caption {
  font-family: "M PLUS 1p", sans-serif;
  font-weight: 300;
  font-size: 14px;
}


a {
  color: var(--main-orange);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--deep-orange);
}

p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

/* ボタンテキスト */
.btn {
  font-family: "M PLUS 1p", sans-serif;
  font-weight: 500;
}

/* 英数字用フォント（M PLUS 1p統一） */
.inter-font {
  font-family: "M PLUS 1p", sans-serif;
}

/* ===================================
   共通レイアウト
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

/* ===================================
   ボタンスタイル
   =================================== */
.btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-primary {
  background: var(--button-gradient);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--button-gradient);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 133, 83, 0.3);
}

.btn-white {
  background-color: var(--white);
  color: var(--cta-orange);
}

.btn-white:hover {
  background-color: var(--off-white);
}

.btn-youtube {
  background-color: #ff0000;
  color: var(--white);
}

.btn-youtube:hover {
  background-color: #cc0000;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 0, 0, 0.3);
}

.btn-outline {
  background-color: transparent;
  color: var(--deep-orange);
  border: 3px solid var(--deep-orange);
  box-shadow: none;
}

.btn-outline:hover {
  background-color: var(--deep-orange);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(255, 133, 83, 0.3);
}

.btn-yellow {
  background-color: var(--warning-yellow);
  color: var(--white);
}

.btn-yellow:hover {
  background-color: #ff9800;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 176, 0, 0.3);
}

.btn-large {
  padding: 16px 40px;
  font-size: 1.125rem;
}

/* ===================================
   ヘッダー
   =================================== */
.site-header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo-title {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-title-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
}

.logo-title-link:hover {
  text-decoration: none;
}

.logo-title-link:hover .site-title {
  color: var(--main-orange);
  transition: color 0.3s ease;
}

.logo {
  height: 50px;
  width: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.site-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin: 0;
}

.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-list a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--main-orange);
}

.nav-list a:after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--main-orange);
  transition: width 0.3s ease;
}

.nav-list a.active:after,
.nav-list a:hover:after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background-color: var(--white);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  z-index: 999;
}

.mobile-nav-list {
  list-style: none;
  padding: 1rem 0;
}

.mobile-nav-list li {
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-list a {
  display: block;
  padding: 1rem 20px;
  color: var(--text-primary);
  font-weight: 500;
}

.mobile-nav-list a.active,
.mobile-nav-list a:hover {
  background-color: var(--bg-light);
  color: var(--main-orange);
}

/* ===================================
   プロモーションバナー
   =================================== */
.promo-banner {
  background-color: var(--warning-yellow);
  color: var(--white);
  padding: 0.75rem 0;
  text-align: center;
}

.promo-banner .container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.promo-banner p {
  margin: 0;
  font-weight: 500;
}

.promo-banner .btn {
  padding: 8px 24px;
  font-size: 0.875rem;
}

/* ===================================
   ヒーローセクション
   =================================== */
.hero-section {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--hero-gradient);
  background-image: url('../assets/top/hero_pc.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  text-align: center;
  color: var(--white);
  max-width: 800px;
  margin: 0 auto;
  padding: 120px 0 80px;
}

.hero-section .hero-title {
  font-size: 2.8rem !important;
  margin-bottom: 1rem;
  line-height: 1.3;
  color: var(--white);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.hero-description {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  line-height: 1.8;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* ===================================
   入門動画セクション
   =================================== */
.intro-video-section {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  max-width: 1120px;
  margin: 0 auto 2rem;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-title {
  text-align: center;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.video-title i {
  color: var(--main-orange);
  margin-right: 0.5rem;
}

/* ===================================
   ショート動画ギャラリー
   =================================== */
.shorts-gallery-section {
  padding: 80px 0;
}

.shorts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.short-card {
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.short-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.short-link {
  display: block;
  text-decoration: none;
}

.short-video-wrapper {
  position: relative;
  padding-bottom: 177.78%; /* 9:16 aspect ratio for YouTube Shorts */
  height: 0;
  overflow: hidden;
  background-color: var(--bg-gray);
  border-radius: 8px;
}

.short-video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
}

.play-overlay i {
  color: var(--white);
  font-size: 1.5rem;
  margin-left: 3px;
}

.short-title {
  padding: 1rem 1rem 0.5rem;
  font-size: 1.125rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.short-footer {
  padding: 0 1rem 1rem;
}

.affiliate-notice {
  font-size: 0.875rem;
  color: var(--gray);
  margin-bottom: 1rem;
  text-align: center;
  padding: 0.5rem;
}

.material-link {
  font-size: 0.875rem;
  color: var(--main-orange);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.material-link i {
  font-size: 0.75rem;
}

/* ギャラリーアクション */
.gallery-actions {
  text-align: center;
  margin-top: 2rem;
}

.affiliate-notice {
  text-align: right;
  margin-top: 1rem;
}

.affiliate-notice p {
  font-size: 0.75rem;
  color: var(--gray);
  opacity: 0.8;
  margin: 0;
}

/* ===================================
   YouTubeチャンネルセクション
   =================================== */
.youtube-channel-section {
  padding: 80px 0;
  background: var(--pink-gradient);
}

.channel-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.channel-text {
  color: var(--white);
}

.channel-text .section-title {
  color: var(--white);
  text-align: left;
}

.section-description {
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.channel-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

.stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
}

.stat i {
  font-size: 1.25rem;
  opacity: 0.9;
}

.channel-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ピンク背景でのボタンスタイル調整 */
.youtube-channel-section .btn-outline {
  background-color: var(--white);
  color: var(--dark-gray);
  border: 3px solid var(--white);
  font-weight: 600;
}

.youtube-channel-section .btn-outline:hover {
  background-color: var(--dark-gray);
  color: var(--white);
  border-color: var(--dark-gray);
}

.channel-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* ===================================
   無料特典ページ
   =================================== */
.page-header {
  background: var(--hero-gradient);
  padding: 60px 0;
  color: var(--white);
}

.page-header-simple {
  background: var(--bg-light);
  padding: 40px 0;
  color: var(--text-primary);
}

.page-header-simple .page-title {
  color: var(--text-primary);
}

.page-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.highlight-pink {
  color: var(--white);
  font-weight: 700;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
  text-align: center;
  font-size: 1.25rem;
  opacity: 0.95;
  max-width: 800px;
  margin: 0 auto;
}

/* セクション共通スタイル */
.slide-info-section,
.slide-preview-section,
.target-audience-section,
.form-section,
.related-video-section {
  padding: 60px 0;
}

.slide-info-section {
  background-color: var(--bg-light);
}

.target-audience-section {
  background-color: var(--bg-light);
}

.form-section {
  background: var(--hero-gradient);
  color: var(--white);
}

.form-section .section-title {
  color: var(--white);
}

.form-description {
  text-align: center;
  font-size: 1.125rem;
  margin-bottom: 2rem;
  color: var(--white);
  opacity: 0.95;
}

.slide-info,
.target-audience {
  margin-bottom: 3rem;
}

.slide-contents,
.target-list {
  list-style: none;
  padding: 0;
  max-width: 800px;
  margin: 0 auto;
}

.slide-contents li,
.target-list li {
  display: flex;
  align-items: center;
  padding: 1rem;
  margin-bottom: 0.75rem;
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  font-size: 1.125rem;
}

.slide-contents i {
  color: var(--main-orange);
  margin-right: 1rem;
  font-size: 1.25rem;
  min-width: 20px;
}

.target-list i {
  color: var(--success);
  margin-right: 1rem;
  font-size: 1.25rem;
  min-width: 20px;
}

.slide-preview {
  margin-bottom: 2rem;
}

.preview-title,
.form-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.preview-item {
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.preview-item:hover {
  transform: translateY(-5px);
}

.preview-item img {
  width: 100%;
  height: auto;
  display: block;
}

.google-form-wrapper {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.google-form-wrapper iframe {
  width: 100%;
  border: none;
}

.video-description {
  text-align: center;
  font-size: 1.125rem;
  margin-bottom: 2rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ===================================
   期間限定バナー
   =================================== */
.limited-banner {
  background-color: var(--warning-yellow);
  padding: 40px 0;
}

.banner-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.banner-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.banner-title i {
  color: var(--danger);
  margin-right: 0.5rem;
}

.banner-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.banner-description strong {
  color: var(--danger);
  font-size: 1.25rem;
}

/* ===================================
   みんなの声セクション
   =================================== */
.testimonials-section {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.testimonial-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.rating {
  margin-bottom: 1rem;
}

.rating i {
  color: var(--warning-yellow);
  font-size: 1.125rem;
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.testimonial-author {
  text-align: right;
}

.author-name {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ===================================
   プライバシーポリシー
   =================================== */
.privacy-policy-content {
  padding: 60px 0;
}

.policy-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--white);
  padding: 3rem;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.last-updated {
  text-align: right;
  color: var(--text-light);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.policy-section {
  margin-bottom: 2.5rem;
}

.policy-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.policy-section ul {
  margin-left: 1.5rem;
  margin-top: 1rem;
}

.policy-section li {
  margin-bottom: 0.5rem;
  line-height: 1.8;
}

/* プライバシー通知セクション */
.privacy-notice {
  margin-top: 30px;
  padding: 20px;
  background: var(--light-gray);
  border-radius: 8px;
  border-left: 4px solid var(--info-blue);
}

.privacy-notice h3 {
  color: var(--dark-gray);
  font-size: 1.125rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.privacy-notice p {
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray);
}

.privacy-notice a {
  color: var(--info-blue);
  text-decoration: underline;
  font-weight: 500;
}

.privacy-notice a:hover {
  color: var(--deep-orange);
}

.privacy-notice .company-name {
  font-weight: 600;
  color: var(--dark-gray);
  margin-top: 15px;
  text-align: right;
}

/* ===================================
   フッター
   =================================== */
.site-footer {
  background-color: var(--text-primary);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  flex: 1;
}

.footer-logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-logo {
  height: 80px;
  width: 80px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-size: 1rem;
  opacity: 0.9;
  line-height: 1.6;
}

.footer-subtitle {
  font-size: 0.875rem;
  opacity: 0.7;
  font-style: italic;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--white);
  font-size: 1.5rem;
  transition:
    background-color 0.3s ease,
    transform 0.3s ease;
}

.footer-social a:hover {
  background-color: var(--main-orange);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.copyright {
  font-size: 0.875rem;
  opacity: 0.8;
  margin: 0;
  margin: 0;
}

/* ===================================
   ユーティリティクラス
   =================================== */
.mobile-br {
  display: none;
}

.desktop-br {
  display: inline;
}

.scroll-to-form {
  cursor: pointer;
}

/* ===================================
   アニメーション
   =================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}