/* リセットCSS */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* スムーズスクロール */
html {
  scroll-behavior: smooth;
}

:root {
  --gold: #FFD700;
  --gold-dark: #daba27;
  --sage-green: #a2b5a0;
  --sumi: #333333;
  --light-gray: #f8f8f8;
  --white: #ffffff;
  --font-noto-serif-jp: "Noto Serif JP", serif;
}

body {
  height: 100vh;
  display: grid;
  font-family: var(--font-noto-serif-jp);
  line-height: 1.6;
  color: var(--sumi);
  background-color: var(--white);
}

/* ヘッダー */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  opacity: 1;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(181, 159, 108, 0.2);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 70px;
  position: relative;
  background-image: url('../images/washi-background.png');
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 40px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: var(--sumi);
  font-family: var(--font-noto-serif-jp);
  font-weight: 500;
  font-size: 14px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--gold-dark);
  background-color: rgba(255, 215, 0, 0.1);
}

.nav-link.active {
  color: var(--gold-dark);
  background-color: rgba(255, 215, 0, 0.15);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.nav-toggle-line {
  width: 25px;
  height: 1.8px;
  background-color: var(--sumi);
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .header-nav.active {
    opacity: 0.95;
  }

  .nav-container {
    justify-content: center;
    padding: 0;
  }

  .nav-menu {
    gap: 7px;
    justify-content: center;
  }

  .nav-link {
    font-size: 9px;
    letter-spacing: -0.03em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(162, 181, 160, 0.4);
  }
}

@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    display: flex;
    position: static;
    width: auto;
    height: auto;
    background-color: transparent;
    backdrop-filter: none;
    opacity: 1;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding-top: 0;
  }
}

/* レイアウト */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* メインコンテナ */
.main-container {
  background-image: url('../images/washi-background.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-blend-mode: multiply;
}

/* ヒーローセクション */
.hero-section {
  padding: 4rem 0;
  text-align: center;
  margin-top: 70px;
}

.hero-title {
  font-family: var(--font-noto-serif-jp);
  font-size: 3rem;
  font-weight: 500;
  background: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  letter-spacing: 0.2em;
}

.hero-subtitle {
  font-family: var(--font-noto-sans-jp);
  font-size: 1.2rem;
  color: var(--sage-green);
  letter-spacing: 0.05em;
}

/* メインコンテンツ */
.main-content {
  padding: 2rem 0;
}

/* セクション全体のフェードイン */
section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.2s ease-out, transform 1.2s ease-out;
}

section.fade-in {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* フッター */
.footer {
  background-image: url('../images/washi-background.png');
  padding: 2rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}

.footer-info {
  text-align: center;
}

.footer-text {
  font-family: var(--font-noto-sans-jp);
  color: var(--sumi);
  font-size: 1.25rem;
}

.footer-contact {
  text-align: center;
}

.footer-link {
  background: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
}

.footer-link:hover {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-logo {
  text-align: center;
}

.footer-logo-img {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.5rem;
}

.footer-copyright {
  font-family: var(--font-noto-sans-jp);
  color: var(--sage-green);
  font-size: 0.75rem;
}

@media (max-width: 768px) {
  .footer {
    padding: 0;
  }
}

.line-icon {
  position: static !important;
  bottom: auto !important;
  right: auto !important;
  z-index: auto !important;
}

/* FAB (Floating Action Button) */
.fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
}

.fab-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 100%);
  color: white;
  border-radius: 50%;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.fab-button:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* モバイル専用改行 */
.mobile-br {
  display: none;
}

@media (max-width: 768px) {
  .mobile-br {
    display: block;
  }
}

/* Coming Soon セクション */
.coming-soon-section {
  padding: 2rem 0;
  text-align: center;
}

.coming-soon-content {
  max-width: 600px;
  margin: 0 auto;
}

.coming-soon-title {
  font-family: var(--font-noto-serif-jp);
  font-size: 3rem;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 0.5rem;
  letter-spacing: 0.2em;
}

.coming-soon-subtitle {
  font-family: var(--font-noto-serif-jp);
  font-size: 1.5rem;
  color: var(--sumi);
  margin-bottom: 2rem;
  letter-spacing: 0.1em;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  .hero-title {
    font-size: 1.95rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .coming-soon-title {
    font-size: 2rem;
  }

  .coming-soon-subtitle {
    font-size: 1.2rem;
  }

  .fab {
    bottom: 1rem;
    right: 1rem;
  }

  .fab-button {
    width: 50px;
    height: 50px;
  }
}