/**
 * ランディングページ専用スタイル
 * かんたん請求書・領収書作成ツール by サプライコネクト
 */

/* ===== サイトヘッダー（ツールヘッダーと共通デザイン） ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 100%;
  padding: 0 var(--spacing-xl);
  gap: 12px;
}

/* ロゴリンク全体 */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

/* SCロゴ画像 */
.site-logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  object-position: center;
  flex-shrink: 0;
  display: block;
  align-self: center;
}

/* ロゴテキスト部分 */
.site-logo-texts {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.site-logo-text {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--secondary);
  line-height: 1.2;
  white-space: nowrap;
}

.site-logo-sub {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ナビ右側 */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-nav a,
.nav-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

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

/* モバイル：ナビリンクを非表示 */
@media (max-width: 767px) {
  .nav-links {
    display: none;
  }
  .site-header .header-inner {
    padding: 0 var(--spacing-md);
  }
  .site-logo-text {
    font-size: 12px;
  }
  .site-logo-sub {
    font-size: 10px;
  }
  .site-logo-img {
    width: 28px;
    height: 28px;
  }
}

/* ===== ヒーローセクション ===== */
.hero {
  padding-top: calc(var(--header-height) + var(--spacing-4xl));
  padding-bottom: var(--spacing-4xl);
  background: linear-gradient(160deg, #EFF6FF 0%, #F8FAFC 40%, #F8FAFC 100%);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--bg-primary-subtle);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: var(--spacing-lg);
}

.hero h1 {
  font-size: var(--text-4xl);
  line-height: 1.2;
  color: var(--secondary);
  margin-bottom: var(--spacing-lg);
  font-weight: 800;
}

.hero h1 .highlight {
  color: var(--primary-light);
  position: relative;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
  border-radius: 2px;
  opacity: 0.4;
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.hero-cta-main {
  padding: 16px 32px;
  font-size: var(--text-base);
  font-weight: 700;
  background: var(--primary-light);
  color: white;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(59,130,246,0.3);
}

.hero-cta-main:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59,130,246,0.4);
}

.hero-cta-sub {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: color var(--transition);
  background: none;
  border: none;
  padding: 0;
}

.hero-cta-sub:hover {
  color: var(--primary-light);
}

.hero-trust-signals {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
}

.trust-item svg {
  flex-shrink: 0;
}

/* ヒーロービジュアル */
.hero-visual {
  position: relative;
}

.hero-mockup {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(30,58,138,0.12), 0 8px 24px rgba(0,0,0,0.06);
  overflow: hidden;
  border: 1px solid var(--border);
}

.mockup-header {
  background: var(--primary);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mockup-header-title {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.9);
  font-weight: 600;
}

.mockup-dots {
  display: flex;
  gap: 5px;
}

.mockup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
}

.mockup-body {
  padding: 20px;
}

.mockup-doc {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  font-size: var(--text-xs);
}

.mockup-doc-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 8px;
}

.mockup-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.mockup-total-row {
  background: var(--bg-primary-subtle);
  padding: 8px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  color: var(--secondary);
}

.mockup-table {
  width: 100%;
  margin: 12px 0;
}

.mockup-table-header {
  display: flex;
  gap: 4px;
  margin-bottom: 4px;
}

.mockup-table-cell {
  height: 8px;
  border-radius: 2px;
  background: var(--border);
}

.mockup-table-row {
  display: flex;
  gap: 4px;
  margin-bottom: 3px;
}

.mockup-table-cell.active {
  background: var(--bg-primary-subtle);
}

/* ===== 特徴セクション ===== */
.features {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-xl);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.feature-card:hover {
  background: var(--bg-subtle);
  transform: translateY(-2px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: var(--bg-primary-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 24px;
}

.feature-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: var(--spacing-sm);
}

.feature-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== ステップセクション ===== */
.steps {
  background: var(--bg-main);
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  position: relative;
}

.steps-list::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 16.7%;
  right: 16.7%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary));
  opacity: 0.2;
  z-index: 0;
}

.step-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: white;
  font-size: var(--text-xl);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  box-shadow: 0 4px 12px rgba(59,130,246,0.3);
}

.step-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: var(--spacing-sm);
}

.step-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 機能一覧セクション ===== */
.checklist {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm) var(--spacing-xl);
  max-width: 800px;
  margin: 0 auto;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding: 6px 0;
}

.checklist-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

/* ===== FAQ セクション ===== */
.faq {
  background: var(--bg-main);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-hover);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--secondary);
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--primary-light);
}

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary-light);
  color: white;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding var(--transition);
  padding: 0 var(--spacing-lg);
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 var(--spacing-lg) var(--spacing-md);
}

.faq-answer p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== SEOコンテンツセクション ===== */
.seo-content {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.seo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
}

.seo-block h3 {
  font-size: var(--text-xl);
  color: var(--secondary);
  margin-bottom: var(--spacing-md);
}

.seo-block p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--spacing-md);
}

/* ===== 会社紹介セクション ===== */
.about-company {
  background: var(--bg-main);
}

.about-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-xl);
  align-items: flex-start;
  box-shadow: var(--shadow-card);
}

.about-icon {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  background: var(--primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-text h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-sm);
}

.about-text p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

/* ===== CTA セクション（Web制作） ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-banner h2 {
  font-size: var(--text-3xl);
  color: white;
  margin-bottom: var(--spacing-md);
}

.cta-banner p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: white;
  color: var(--primary);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: 700;
  transition: all var(--transition);
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

.cta-banner .btn-cta:hover {
  background: var(--bg-subtle);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

/* ===== フッター CTA ===== */
.footer-cta {
  background: linear-gradient(135deg, var(--secondary) 0%, #1E293B 100%);
  color: white;
  text-align: center;
}

.footer-cta h2 {
  font-size: var(--text-2xl);
  color: white;
  margin-bottom: var(--spacing-sm);
}

.footer-cta p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--spacing-xl);
}

/* ===== フッター ===== */
.site-footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.7);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand .footer-logo-text {
  font-size: var(--text-base);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-sm);
}

.footer-brand p {
  font-size: var(--text-xs);
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}

.footer-links h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}

.footer-version {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}

/* ===== レスポンシブ ===== */
@media (max-width: 1023px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    display: none;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-list::before {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 767px) {
  .hero h1 {
    font-size: var(--text-3xl);
  }
  .hero-cta-group {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-cta-main {
    width: 100%;
    justify-content: center;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .steps-list {
    grid-template-columns: 1fr;
  }
  .checklist-grid {
    grid-template-columns: 1fr;
  }
  .seo-grid {
    grid-template-columns: 1fr;
  }
  .about-card {
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  .cta-banner h2 {
    font-size: var(--text-2xl);
  }
  .cta-banner p {
    font-size: var(--text-base);
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}