/* ============================================================
   焼肉 一心 – style.css
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --red:        #c0392b;
  --red-dark:   #922b21;
  --red-light:  #e74c3c;
  --cream:      #fdf6ee;
  --warm:       #faf0e4;
  --text:       #2c2c2c;
  --text-sub:   #6b6b6b;
  --border:     #e8ddd3;
  --white:      #ffffff;
  --line-green: #06c755;
  --line-dark:  #019a3c;
  --insta-grad: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);

  --font-sans:  'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;

  --radius:     10px;
  --radius-lg:  18px;
  --shadow:     0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 36px rgba(0,0,0,0.14);

  --transition: 0.25s ease;

  --fbb-height: 64px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--cream);
  line-height: 1.75;
}

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

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

ul, ol { list-style: none; }

/* ---------- Utility ---------- */
.container {
  width: min(100%, 1100px);
  margin-inline: auto;
  padding-inline: 20px;
}

.accent-red { color: var(--red); }

.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }

.section {
  padding-block: 72px;
}

/* ---------- Section Heading ---------- */
.section-heading {
  text-align: center;
  margin-bottom: 48px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--red);
  border-bottom: 2px solid var(--red);
  padding-bottom: 2px;
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: rgba(253, 246, 238, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(0,0,0,0.10);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding-inline: 20px;
  max-width: 1100px;
  margin-inline: auto;
}

/* Logo */
.logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text);
  letter-spacing: 0.05em;
  transition: opacity var(--transition);
}
.logo:hover { opacity: 0.75; }
.logo .logo-accent {
  color: var(--red);
  font-size: 1.55rem;
}

/* PC Nav */
.pc-nav ul {
  display: flex;
  gap: 32px;
}
.pc-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}
.pc-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: width var(--transition);
}
.pc-nav a:hover { color: var(--red); }
.pc-nav a:hover::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none !important;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  border-radius: 6px;
  transition: background var(--transition);
  flex-shrink: 0;
  position: relative;
  z-index: 910;
}
.hamburger:hover { background: rgba(0, 0, 0, 0.05); }
.hamburger span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}
/* Open state */
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* SP Nav */
.sp-nav {
  background: var(--cream);
  border-top: 1px solid var(--border);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease-out;
}
.sp-nav.open {
  max-height: 300px;
}
.sp-nav ul {
  display: flex;
  flex-direction: column;
}
.sp-nav-link {
  display: block;
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), color var(--transition);
}
.sp-nav-link:hover {
  background: var(--warm);
  color: var(--red);
}
.sp-nav ul li:last-child .sp-nav-link { border-bottom: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 60px;
}

.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(30, 20, 15, 0.65) 0%, rgba(15, 10, 8, 0.5) 60%, rgba(0, 0, 0, 0.75) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 24px;
  color: var(--white);
  animation: fadeUp 0.9s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  opacity: 0.85;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 12vw, 6rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 20px;
  text-shadow: 0 4px 24px rgba(0,0,0,0.4);
}
.hero-title .accent-red {
  color: #ff6b6b;
  text-shadow: 0 2px 16px rgba(255,50,50,0.5);
}

.hero-catch {
  font-size: clamp(1rem, 3vw, 1.25rem);
  line-height: 1.8;
  margin-bottom: 36px;
  opacity: 0.95;
  font-family: var(--font-serif);
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.hero-scroll-indicator span {
  display: block;
  width: 22px;
  height: 22px;
  border-right: 2px solid rgba(255,255,255,0.7);
  border-bottom: 2px solid rgba(255,255,255,0.7);
  transform: rotate(45deg);
  animation: bounce 1.6s ease infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(6px); }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 13px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}
.btn-primary:hover {
  background: var(--red-dark);
  border-color: var(--red-dark);
  box-shadow: 0 6px 20px rgba(192,57,43,0.35);
}

.btn-line {
  background: var(--line-green);
  color: var(--white);
  border-color: var(--line-green);
}
.btn-line:hover {
  background: var(--line-dark);
  border-color: var(--line-dark);
  box-shadow: 0 6px 20px rgba(6,199,85,0.35);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.85rem;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-section {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.about-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
}
.about-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.about-img-wrap:hover .about-img { transform: scale(1.04); }

.about-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 20px;
  color: var(--text);
}

.about-text p {
  font-size: 0.95rem;
  color: var(--text-sub);
  margin-bottom: 16px;
  line-height: 1.9;
}
.about-text p strong { color: var(--text); }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}
.tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--warm);
  color: var(--red-dark);
  border: 1px solid var(--border);
}

/* ============================================================
   MENU SLIDER
   ============================================================ */
.menu-section {
  background: var(--cream);
}

.menu-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-bottom: 36px;
}

.slider-wrapper {
  position: relative;
  max-width: 600px;
  margin-inline: auto;
  user-select: none;
}

.slider-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.slide {
  min-width: 100%;
  flex: 0 0 100%;
}

.slide-inner {
  padding: 0 8px;
}

.slide-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: var(--border);
}

.slide-label {
  text-align: center;
  margin-top: 16px;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.popular-badge {
  display: inline-block;
  background: var(--red);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  font-family: var(--font-sans);
}

/* Arrows */
.slider-arrow {
  position: absolute;
  top: calc(50% - 20px);
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--white);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
  z-index: 10;
}
.slider-arrow:hover {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
  box-shadow: 0 4px 16px rgba(192,57,43,0.3);
  transform: translateY(-50%) scale(1.08);
}
.slider-arrow:disabled {
  display: none;
}
.slider-prev { left: -22px; }
.slider-next { right: -22px; }

/* Indicator */
.slider-indicator {
  text-align: center;
  margin-top: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-sub);
  letter-spacing: 0.05em;
}
#slide-current { color: var(--red); font-size: 1.1rem; }

/* Dots */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition);
}
.dot.active {
  background: var(--red);
  transform: scale(1.3);
}

/* ============================================================
   INFO
   ============================================================ */
.info-section {
  background: var(--white);
}

.info-card {
  background: var(--warm);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}
.info-table th,
.info-table td {
  padding: 18px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}
.info-table th {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--red-dark);
  white-space: nowrap;
  width: 120px;
  background: rgba(192,57,43,0.06);
}
.info-table td { font-size: 0.95rem; }

.info-link {
  color: var(--red);
  text-decoration: underline;
  transition: opacity var(--transition);
}
.info-link:hover { opacity: 0.7; }

/* Hours */
.hours-list {
  display: grid;
  gap: 4px;
  margin-bottom: 10px;
}
.hours-row {
  display: flex;
  gap: 16px;
  font-size: 0.9rem;
}
.hours-row dt {
  font-weight: 600;
  min-width: 60px;
  color: var(--text);
}
.hours-row dd { color: var(--text-sub); }
.hours-row dd.closed { color: var(--text-sub); font-style: italic; }

.hours-note {
  font-size: 0.82rem;
  color: var(--text-sub);
  background: rgba(192,57,43,0.07);
  padding: 8px 12px;
  border-radius: 6px;
  border-left: 3px solid var(--red);
}

/* ============================================================
   ACCESS
   ============================================================ */
.access-section {
  background: var(--cream);
}

.access-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}

.access-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}
.access-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  line-height: 1.6;
}
.access-icon {
  color: var(--red);
  flex-shrink: 0;
  margin-top: 2px;
}

.access-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  background: var(--border);
}
.access-map iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================================
   SNS
   ============================================================ */
.sns-section {
  background: var(--white);
}

.sns-desc {
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-sub);
  margin-bottom: 36px;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 32px;
}

.sns-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.sns-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  letter-spacing: 0.04em;
}
.sns-btn:hover { transform: translateY(-3px); filter: brightness(1.08); }

.sns-instagram {
  background: var(--insta-grad);
  box-shadow: 0 4px 18px rgba(220,39,67,0.3);
}
.sns-instagram:hover { box-shadow: 0 8px 28px rgba(220,39,67,0.45); }

.sns-line {
  background: var(--line-green);
  box-shadow: 0 4px 18px rgba(6,199,85,0.3);
}
.sns-line:hover { box-shadow: 0 8px 28px rgba(6,199,85,0.45); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #1a0a06;
  color: rgba(255,255,255,0.75);
  padding-block: 40px;
}

.footer-inner {
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: 20px;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 8px;
}
.footer-addr,
.footer-tel {
  font-size: 0.88rem;
  margin-bottom: 4px;
}
.footer-tel a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}
.footer-tel a:hover { color: var(--white); }

.footer-copy {
  margin-top: 20px;
  font-size: 0.75rem;
  opacity: 0.5;
}

/* ============================================================
   FIXED BOTTOM BAR
   ============================================================ */
.fixed-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--fbb-height) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  display: none;
  z-index: 950;
  background: var(--white);
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 12px rgba(0,0,0,0.10);
}

.fbb-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-sub);
  transition: background var(--transition), color var(--transition);
  padding: 6px 4px;
  letter-spacing: 0.03em;
  border-right: 1px solid var(--border);
}
.fbb-item:last-child { border-right: none; }
.fbb-item:hover { background: var(--warm); }

.fbb-item svg { transition: transform var(--transition); }
.fbb-item:hover svg { transform: scale(1.15); }

/* Instagram */
.fbb-item:nth-child(1) { color: #c13584; }
.fbb-item:nth-child(1):hover { background: #fdf0f7; }

/* Tel */
.fbb-tel { color: var(--red); }
.fbb-tel:hover { background: #fff0ef; }

/* LINE */
.fbb-line { color: var(--line-green); }
.fbb-line:hover { background: #f0fff5; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  body {
    padding-bottom: calc(var(--fbb-height) + env(safe-area-inset-bottom));
  }
  .fixed-bottom-bar {
    display: flex !important;
  }
  .pc-nav { display: none !important; }
  .hamburger { display: flex !important; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .about-img-wrap {
    max-width: 500px;
    margin-inline: auto;
  }

  .access-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .access-map {
    aspect-ratio: 16 / 9;
  }

  .slider-prev { left: -14px; }
  .slider-next { right: -14px; }
}

@media (max-width: 600px) {
  .section { padding-block: 52px; }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
  .btn { width: 100%; max-width: 280px; }

  .info-table th { width: 90px; font-size: 0.8rem; }
  .info-table th,
  .info-table td { padding: 14px 14px; }

  .hours-row { font-size: 0.82rem; gap: 10px; }
  .hours-row dt { min-width: 50px; }

  .slider-arrow {
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
  }
  .slider-prev { left: -10px; }
  .slider-next { right: -10px; }

  .sns-links { flex-direction: column; align-items: center; }
  .sns-btn { width: 100%; max-width: 280px; justify-content: center; }

  .section-title { font-size: 1.4rem; }
}

@media (max-width: 400px) {
  .info-table {
    display: block;
  }
  .info-table tbody { display: block; }
  .info-table tr { display: block; border-bottom: 1px solid var(--border); }
  .info-table tr:last-child { border-bottom: none; }
  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
  }
  .info-table th {
    padding-bottom: 4px;
    border-bottom: none;
  }
  .info-table td {
    padding-top: 4px;
    padding-bottom: 14px;
  }
}