/* ============================================================
   SRTコーポレーション メディア — メインスタイルシート
   ファイル: css/style.css
   ============================================================ */

/* ----------------------------------------
   リセット & ベース
---------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  color: #2a2a2a;
  background: #ffffff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* ----------------------------------------
   CSS カスタムプロパティ（変数）
---------------------------------------- */
:root {
  /* カラー */
  --color-green-dark:   #1a3d28;
  --color-green-main:   #2d5a3d;
  --color-green-mid:    #4a7c59;
  --color-green-light:  #e8ede5;
  --color-green-pale:   #f2f5f0;
  --color-white:        #ffffff;
  --color-gray-100:     #f8f8f6;
  --color-gray-200:     #eeeeee;
  --color-gray-300:     #cccccc;
  --color-gray-500:     #888888;
  --color-gray-700:     #555555;
  --color-text:         #2a2a2a;
  --color-text-light:   #666666;

  /* 角丸 */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;

  /* シャドウ */
  --shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md:  0 6px 24px rgba(0, 0, 0, 0.13);

  /* トランジション */
  --transition: 0.22s ease;

  /* 最大幅 */
  --max-width: 1160px;
}

/* ----------------------------------------
   共通ユーティリティ
---------------------------------------- */

/* コンテナ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* セクションタイトル */
.section-title {
  text-align: center;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 40px;
  color: var(--color-text);
}

.section-title span {
  color: var(--color-green-main);
}

/* 詳細リンク（→付き） */
.link-detail {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}

.link-detail::after {
  content: '→';
}

.link-detail:hover {
  color: var(--color-green-main);
  gap: 8px;
}

/* もっと見るボタン */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  border: 1px solid var(--color-gray-300);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.link-more::after {
  content: '→';
  color: var(--color-green-main);
}

.link-more:hover {
  background: var(--color-green-main);
  color: var(--color-white);
  border-color: var(--color-green-main);
}

.link-more:hover::after {
  color: var(--color-white);
}


/* ============================================================
   01. HEADER
   ============================================================ */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  height: 64px;
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ロゴ */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  height: 38px;
  width: auto;
}

.logo-text .logo-company {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

.logo-text .logo-tagline {
  display: block;
  font-size: 0.52rem;
  color: var(--color-gray-500);
  margin-top: 1px;
}

/* PC ナビゲーション */
.header-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.header-nav a {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  position: relative;
  padding-bottom: 2px;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-green-main);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.header-nav a:hover::after {
  transform: scaleX(1);
}

/* お問い合わせボタン */
.header-cta-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-green-main);
  color: var(--color-white);
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--transition);
}

.header-cta-btn:hover {
  background: var(--color-green-dark);
}

/* ハンバーガーボタン（SP） */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* モバイルナビ */
.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  padding: 32px 24px;
  flex-direction: column;
  gap: 0;
  z-index: 199;
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav a {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 16px 0;
  border-bottom: 1px solid var(--color-gray-200);
}


/* ============================================================
   02. HERO
   ============================================================ */
#hero {
  margin-top: 64px;
}

#hero .hero-image {
  width: 100%;
  display: block;
  max-height: 520px;
  object-fit: cover;
  object-position: center top;
}


/* ============================================================
   03. STATS（実績数値）
   ============================================================ */
#stats {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px 16px;
  border-right: 1px solid var(--color-gray-200);
  text-align: center;
}

.stat-item:last-child {
  border-right: none;
}

.stat-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 8px;
  color: var(--color-green-main);
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 2px;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 900;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-value em {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-green-main);
  font-style: normal;
}

.stat-value--area {
  font-size: 1.3rem;
}

.stat-note {
  font-size: 0.65rem;
  color: var(--color-text-light);
  margin-top: 4px;
}


/* ============================================================
   04. SERVICES（サービス）
   ============================================================ */
#services {
  padding: 72px 0;
  background: var(--color-white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.service-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* サービスカード 画像エリア */
.service-card-image {
  height: 188px;
  position: relative;
  overflow: hidden;
  background: var(--color-green-light);
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.service-card:hover .service-card-image img {
  transform: scale(1.04);
}

/* アイコンバッジ */
.service-badge {
  position: absolute;
  bottom: -20px;
  left: 18px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-green-main);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

/* サービスカード テキストエリア */
.service-card-body {
  padding: 30px 18px 22px;
  background: var(--color-white);
}

.service-card-title {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 9px;
  color: var(--color-text);
}

.service-card-desc {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.85;
  margin-bottom: 14px;
}


/* ============================================================
   05. STRENGTHS（強み）
   ============================================================ */
#strengths {
  padding: 72px 0;
  background: var(--color-green-pale);
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.strength-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px 24px 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

/* 背景の大きい番号 */
.strength-bg-number {
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-green-light);
  line-height: 1;
  letter-spacing: -0.04em;
  user-select: none;
  pointer-events: none;
}

/* アイコン */
.strength-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--color-green-main);
}

.strength-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.strength-desc {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.85;
}


/* ============================================================
   06. WORKS（施工事例）
   ============================================================ */
#works {
  padding: 72px 0;
  background: var(--color-white);
}

.works-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}

.works-header .section-title {
  margin-bottom: 0;
}

/* スライダー外枠 */
.works-slider-outer {
  position: relative;
}

/* カードグリッド */
.works-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.work-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.work-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.work-card-image {
  height: 148px;
  overflow: hidden;
  background: var(--color-green-light);
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.work-card:hover .work-card-image img {
  transform: scale(1.05);
}

.work-card-body {
  padding: 11px 13px 13px;
}

.work-tag {
  font-size: 0.67rem;
  background: var(--color-green-light);
  color: var(--color-green-main);
  padding: 2px 8px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 5px;
  font-weight: 600;
}

.work-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 3px;
  line-height: 1.4;
}

.work-price {
  font-size: 0.75rem;
  color: var(--color-green-main);
  font-weight: 700;
}

/* スライダーボタン */
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  z-index: 2;
  font-size: 1.1rem;
  color: var(--color-text);
}

.slider-btn:hover {
  background: var(--color-green-main);
  color: var(--color-white);
  border-color: var(--color-green-main);
}

.slider-btn--prev { left: -18px; }
.slider-btn--next { right: -18px; }


/* ============================================================
   07. TESTIMONIALS（お客様の声）
   ============================================================ */
#testimonials {
  padding: 72px 0;
  background: var(--color-gray-100);
}

.testimonials-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}

.testimonials-header .section-title {
  margin-bottom: 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
}

.testimonial-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-green-main);
  flex-shrink: 0;
}

.testimonial-name {
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--color-text);
}

.testimonial-info {
  font-size: 0.68rem;
  color: var(--color-text-light);
}

.testimonial-stars {
  color: #e8a020;
  font-size: 0.8rem;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.testimonial-body {
  font-size: 0.78rem;
  color: var(--color-text-light);
  line-height: 1.85;
}

.testimonials-more {
  text-align: center;
  margin-top: 36px;
}


/* ============================================================
   08. FLOW（ご相談の流れ）
   ============================================================ */
#flow {
  padding: 72px 0;
  background: var(--color-white);
}

.flow-steps {
  display: flex;
  align-items: flex-start;
  position: relative;
}

.flow-step {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 8px;
}

/* ステップ間の横線 */
.flow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 26px;
  right: calc(-50% + 28px);
  width: calc(100% - 56px);
  height: 2px;
  background: var(--color-green-light);
  z-index: 0;
}

/* アイコン円 */
.flow-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-green-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  margin: 0 auto 14px;
  position: relative;
  z-index: 1;
  box-shadow: 0 3px 12px rgba(45, 90, 61, 0.3);
  font-size: 1.25rem;
}

/* ステップ番号バッジ */
.flow-step-number {
  position: absolute;
  top: -7px;
  right: -7px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-green-dark);
  color: var(--color-white);
  font-size: 0.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.flow-desc {
  font-size: 0.72rem;
  color: var(--color-text-light);
  line-height: 1.7;
}


/* ============================================================
   09. CTA BANNER（お問い合わせ）
   ============================================================ */
#cta-banner {
  background: var(--color-green-dark);
  padding: 52px 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-text h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.cta-text p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.75;
}

.cta-buttons {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
}

/* CTAボタン共通 */
.cta-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
  min-width: 200px;
}

/* メールボタン */
.cta-btn--mail {
  background: var(--color-white);
  color: var(--color-green-dark);
}

.cta-btn--mail:hover {
  background: var(--color-green-light);
}

/* LINEボタン */
.cta-btn--line {
  background: #06c755;
  color: var(--color-white);
}

.cta-btn--line:hover {
  background: #04a847;
}

/* CTAボタン内アイコン */
.cta-btn-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cta-btn--mail .cta-btn-icon {
  background: var(--color-green-light);
}

.cta-btn--line .cta-btn-icon {
  background: rgba(255, 255, 255, 0.2);
}

.cta-btn-label {
  display: flex;
  flex-direction: column;
}

.cta-btn-sub {
  font-size: 0.65rem;
  opacity: 0.7;
  font-weight: 400;
}

.cta-btn-main {
  font-size: 0.84rem;
  font-weight: 700;
}


/* ============================================================
   10. FOOTER
   ============================================================ */
#site-footer {
  background: #1a2d20;
  padding: 52px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.footer-inner {
  display: grid;
  grid-template-columns: 240px 1fr 200px;
  gap: 52px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* フッターロゴ */
.footer-logo img {
  height: 44px;
  width: auto;
  margin-bottom: 14px;
}

.footer-company-info {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.8;
}

/* フッターナビ */
.footer-nav-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-nav-group-title {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}

.footer-nav-list a {
  display: block;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.55);
  padding: 3px 0;
  transition: color var(--transition);
}

.footer-nav-list a:hover {
  color: var(--color-white);
}

/* フッター 連絡先 */
.footer-contact-title {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}

.footer-tel {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

.footer-tel-note {
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 14px;
}

.footer-contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-green-main);
  color: var(--color-white);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  transition: background var(--transition);
}

.footer-contact-btn:hover {
  background: var(--color-green-dark);
}

/* コピーライト */
.footer-copyright {
  text-align: center;
  padding: 18px 0;
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.35);
}


/* ============================================================
   レスポンシブ
   ============================================================ */

/* タブレット（〜1024px） */
@media (max-width: 1024px) {
  .services-grid,
  .strengths-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .works-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* スマートフォン（〜768px） */
@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .header-nav,
  .header-cta-btn {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .services-grid,
  .strengths-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .works-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-steps {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }

  .flow-step {
    width: 100%;
    max-width: 280px;
  }

  .flow-step:not(:last-child)::after {
    display: none;
  }

  .cta-inner {
    flex-direction: column;
    text-align: center;
  }

  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .cta-btn {
    min-width: auto;
    justify-content: center;
  }

  .footer-nav-grid {
    grid-template-columns: 1fr;
  }

  #hero .hero-image {
    max-height: 280px;
  }
}