/* ============================================================
   Trattoria SOLE - 共通スタイルシート
   Design System: Wine Red / Beige / Gold / Dark Brown
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500&family=EB+Garamond:ital,wght@0,400;0,500;0,600;1,400&family=Noto+Serif+JP:wght@300;400;500;600;700&display=swap');

/* ---------- CSS Variables (Design Tokens) ---------- */
:root {
  /* Colors */
  --color-wine:        #722F37;
  --color-wine-dark:   #5a2229;
  --color-wine-light:  #8d4049;
  --color-beige:       #F5E6D3;
  --color-beige-dark:  #e8d4b8;
  --color-beige-light: #faf3e8;
  --color-gold:        #C9A96E;
  --color-gold-dark:   #a8884f;
  --color-gold-light:  #dfc28e;
  --color-brown:       #3E2723;
  --color-brown-light: #5d3a33;
  --color-white:       #ffffff;
  --color-cream:       #fdf8f2;
  --color-overlay:     rgba(62, 39, 35, 0.65);

  /* Typography */
  --font-serif-en:    'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --font-serif-jp:    'Noto Serif JP', 'Hiragino Mincho ProN', serif;
  --font-weight-light:  300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semi:   600;
  --font-weight-bold:   700;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   6rem;
  --space-2xl:  8rem;

  /* Borders */
  --border-gold:   1px solid var(--color-gold);
  --border-wine:   1px solid var(--color-wine);
  --radius-sm:     4px;
  --radius-md:     8px;
  --radius-full:   9999px;

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(62,39,35,0.12);
  --shadow-md:   0 6px 24px rgba(62,39,35,0.16);
  --shadow-lg:   0 16px 48px rgba(62,39,35,0.22);

  /* Transitions */
  --transition-base: 0.35s ease;
  --transition-slow: 0.6s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-serif-jp);
  font-weight: var(--font-weight-normal);
  color: var(--color-brown);
  background-color: var(--color-cream);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

/* ---------- Typography Utilities ---------- */
.en-title {
  font-family: var(--font-serif-en);
  font-style: italic;
  letter-spacing: 0.04em;
}

.section-label {
  font-family: var(--font-serif-en);
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.section-title {
  font-family: var(--font-serif-jp);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: var(--font-weight-semi);
  line-height: 1.3;
  color: var(--color-brown);
}

.section-title-en {
  font-family: var(--font-serif-en);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: var(--font-weight-light);
  font-style: italic;
  color: var(--color-wine);
}

.gold-line {
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  margin: 1rem auto;
}

/* ---------- Layout ---------- */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-header .section-label {
  display: block;
  margin-bottom: var(--space-xs);
}

.section-header .section-title {
  margin-bottom: 0.5rem;
}

section {
  padding: var(--space-lg) 0;
}

/* ---------- HEADER ---------- */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(245, 230, 211, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 169, 110, 0.3);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

#site-header.scrolled {
  background: rgba(245, 230, 211, 0.98);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 5%;
  max-width: 1400px;
  margin: 0 auto;
}

/* Logo */
.site-logo a {
  font-family: var(--font-serif-en);
  font-size: 1.25rem;
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.08em;
  color: var(--color-wine);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-logo .logo-sub {
  font-family: var(--font-serif-jp);
  font-size: 0.65rem;
  font-weight: var(--font-weight-light);
  letter-spacing: 0.15em;
  color: var(--color-gold-dark);
}

/* Desktop Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.1em;
  color: var(--color-brown);
  position: relative;
  transition: color var(--transition-base);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-wine);
}

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

/* Reservation Button */
.btn-reserve {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-serif-jp);
  font-size: 0.8rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.12em;
  color: var(--color-white);
  background: var(--color-wine);
  border: 1px solid var(--color-wine);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-reserve:hover {
  background: var(--color-wine-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  cursor: pointer;
  background: transparent;
  border: none;
  gap: 5px;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-brown);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(245, 230, 211, 0.98);
  border-top: 1px solid rgba(201, 169, 110, 0.3);
  border-bottom: 1px solid rgba(201, 169, 110, 0.3);
  padding: 1.5rem 5%;
  flex-direction: column;
  gap: 0.5rem;
}

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

.mobile-nav a {
  font-family: var(--font-serif-jp);
  font-size: 0.95rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.1em;
  color: var(--color-brown);
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(201,169,110,0.2);
  transition: color var(--transition-base);
}

.mobile-nav a:hover { color: var(--color-wine); }

.mobile-nav .btn-reserve {
  margin-top: 0.75rem;
  justify-content: center;
}

/* ---------- BUTTONS ---------- */
.btn-primary {
  display: inline-block;
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.15em;
  color: var(--color-white);
  background: var(--color-wine);
  border: 1px solid var(--color-wine);
  padding: 1rem 2.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
}

.btn-primary:hover {
  background: var(--color-wine-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  display: inline-block;
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.15em;
  color: var(--color-wine);
  background: transparent;
  border: 1px solid var(--color-wine);
  padding: 1rem 2.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
}

.btn-secondary:hover {
  background: var(--color-wine);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-gold {
  display: inline-block;
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.15em;
  color: var(--color-brown);
  background: var(--color-gold);
  border: 1px solid var(--color-gold);
  padding: 1rem 2.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
}

.btn-gold:hover {
  background: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ---------- FOOTER ---------- */
#site-footer {
  background: var(--color-brown);
  color: rgba(245,230,211,0.85);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(201,169,110,0.2);
  margin-bottom: var(--space-md);
}

.footer-brand .footer-logo {
  font-family: var(--font-serif-en);
  font-size: 1.5rem;
  font-style: italic;
  color: var(--color-gold);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.3rem;
}

.footer-brand .footer-logo-jp {
  font-family: var(--font-serif-jp);
  font-size: 0.75rem;
  color: var(--color-gold-light);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.8rem;
  line-height: 1.9;
  opacity: 0.75;
}

.footer-col h4 {
  font-family: var(--font-serif-en);
  font-size: 0.75rem;
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(201,169,110,0.2);
}

.footer-col p,
.footer-col address {
  font-style: normal;
  font-size: 0.8rem;
  line-height: 1.9;
  opacity: 0.75;
}

.footer-col ul li {
  margin-bottom: 0.4rem;
}

.footer-col ul li a {
  font-size: 0.8rem;
  opacity: 0.75;
  transition: opacity var(--transition-base), color var(--transition-base);
}

.footer-col ul li a:hover {
  opacity: 1;
  color: var(--color-gold-light);
}

.footer-bottom {
  text-align: center;
  font-size: 0.72rem;
  opacity: 0.5;
}

/* ---------- PAGE HERO (Sub pages) ---------- */
.page-hero {
  padding-top: 80px;
  height: 40vh;
  min-height: 280px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.55);
  transform: scale(1.05);
  transition: transform 6s ease;
}

.page-hero:hover .page-hero-bg {
  transform: scale(1.0);
}

.page-hero-content {
  position: relative;
  z-index: 1;
  color: var(--color-white);
}

.page-hero-content .section-label {
  color: var(--color-gold-light);
  display: block;
  margin-bottom: 0.75rem;
}

.page-hero-content h1 {
  font-family: var(--font-serif-en);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: var(--font-weight-light);
  font-style: italic;
  letter-spacing: 0.05em;
  color: var(--color-white);
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.page-hero-content .page-hero-jp {
  font-family: var(--font-serif-jp);
  font-size: 0.85rem;
  font-weight: var(--font-weight-light);
  letter-spacing: 0.3em;
  color: rgba(245,230,211,0.8);
  margin-top: 0.5rem;
}

/* ---------- DIVIDER ORNAMENT ---------- */
.ornament-divider {
  text-align: center;
  margin: var(--space-lg) 0;
  position: relative;
}

.ornament-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.ornament-divider span {
  display: inline-block;
  background: var(--color-cream);
  padding: 0 1.5rem;
  position: relative;
  font-family: var(--font-serif-en);
  font-size: 1.2rem;
  color: var(--color-gold);
}

/* ---------- SCROLL FADE-IN ANIMATION ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  section {
    padding: var(--space-md) 0;
  }

  .site-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-brand {
    grid-column: auto;
  }

  .page-hero {
    height: 30vh;
    min-height: 220px;
  }
}