/* ================================================
   OCAN — Redesign 2024
   高級感・清潔感テーマ
   ベース: ディープブラック + ウォームゴールド
   ================================================ */

/* ===== Custom Properties ===== */
:root {
  --bg:          #0d0907;
  --bg-alt:      #130e09;
  --bg-card:     #1c1410;
  --gold:        #c44c2a;
  --gold-light:  #e06040;
  --gold-dark:   #9a3820;
  --white:       #f5f0e8;
  --muted:       #8a7a6a;
  --border:      rgba(196, 76, 42, 0.28);
  --border-sub:  rgba(255, 255, 255, 0.07);

  --serif:  'Noto Serif JP', 'Yu Mincho', 'YuMincho', Georgia, serif;
  --sans:   'Noto Sans JP', 'Hiragino Kaku Gothic Pro', sans-serif;
  --display: 'Cormorant Garamond', Georgia, serif;

  --nav-h:   68px;
  --wrap:    1160px;
  --pad:     clamp(20px, 5vw, 60px);
  --sec-gap: clamp(80px, 10vw, 130px);

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--serif);
  line-height: 1.85;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Utility ===== */
.container {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section-en {
  font-family: var(--display);
  font-size: 0.72rem;
  letter-spacing: 0.38em;
  color: var(--gold);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  line-height: 1.45;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-line {
  width: 36px;
  height: 1px;
  background: var(--gold);
  margin: 18px auto 0;
}

/* ================================================
   NAVIGATION
   ================================================ */
#navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 900;
  height: var(--nav-h);
  transition: background 0.5s var(--ease), border-color 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}

#navbar.scrolled {
  background: rgba(12, 12, 12, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-color: var(--border);
}

.nav-container {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  display: inline-flex;
  align-items: center;
  transition: opacity 0.3s;
}

.nav-logo:hover { opacity: 0.75; }

.nav-logo-img {
  height: 34px;
  width: auto;
  display: block;
  filter: invert(1) hue-rotate(180deg);
}

/* Legacy text logo fallback (hidden when img is used) */
.logo-en {
  font-family: var(--display);
  font-size: 1.75rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.logo-ja {
  font-family: var(--sans);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 300;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-family: var(--display);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  position: relative;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.35s var(--ease);
}

.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }

.nav-tel {
  border: 1px solid var(--border) !important;
  padding: 7px 18px !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.08em !important;
  transition: border-color 0.3s, color 0.3s !important;
  white-space: nowrap;
}

.nav-tel::after { display: none !important; }

.nav-tel:hover {
  border-color: var(--gold) !important;
  color: var(--gold) !important;
}

.nav-reserve {
  background: var(--gold) !important;
  color: #1a1a1a !important;
  border: 1px solid var(--gold) !important;
  padding: 7px 18px !important;
  font-size: 0.78rem !important;
  border-radius: 2px;
  white-space: nowrap;
  font-weight: 700;
}

.nav-reserve::after { display: none !important; }

.nav-reserve:hover {
  background: transparent !important;
  color: var(--gold) !important;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--white);
  transition: transform 0.35s var(--ease), opacity 0.35s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ================================================
   HERO
   ================================================ */
#hero {
  position: relative;
  height: 100svh;
  min-height: 580px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0;
}

.hero-slider {
  position: absolute;
  inset: 0;
}

.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.6s ease;
}

.slide.active { opacity: 1; }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(13,9,7,0.18) 0%,
    rgba(13,9,7,0.58) 50%,
    rgba(13,9,7,0.85) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.hero-sub {
  font-family: var(--display);
  font-size: 0.72rem;
  letter-spacing: 0.45em;
  color: var(--gold);
  margin-bottom: 18px;
}

.hero-title {
  line-height: 1;
  margin-bottom: 18px;
}

.hero-logo-img {
  height: clamp(64px, 12vw, 110px);
  width: auto;
  display: block;
  margin: 0 auto;
  filter: invert(1) hue-rotate(180deg);
}

.hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  letter-spacing: 0.32em;
  color: rgba(240, 237, 232, 0.75);
  font-weight: 300;
  margin-bottom: 28px;
}

.hero-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: rgba(240, 237, 232, 0.55);
  margin-bottom: 48px;
}

.tag-divider { color: var(--gold); }

.hero-cta {
  display: inline-block;
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 13px 42px;
  font-family: var(--display);
  font-size: 0.82rem;
  letter-spacing: 0.28em;
  border-radius: 2px;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}

.hero-cta:hover {
  background: var(--gold);
  color: var(--bg);
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 38px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.hero-scroll span {
  font-family: var(--display);
  font-size: 0.6rem;
  letter-spacing: 0.35em;
  color: rgba(240, 237, 232, 0.45);
}

.scroll-line {
  width: 1px;
  height: 54px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: pulse 2.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.25; transform: scaleY(0.7); transform-origin: top; }
  50%       { opacity: 1;    transform: scaleY(1);   transform-origin: top; }
}

/* Slider dots */
.slider-dots {
  position: absolute;
  bottom: 44px;
  right: var(--pad);
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slider-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255,255,255,0.28);
  border: none;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
  padding: 0;
}

.slider-dot.active {
  background: var(--gold);
  transform: scale(1.4);
}

/* ================================================
   CONCEPT
   ================================================ */
#concept {
  background: var(--bg-alt);
  padding: var(--sec-gap) 0;
  position: relative;
}

#concept::before,
#concept::after {
  content: '';
  position: absolute;
  left: var(--pad);
  right: var(--pad);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

#concept::before { top: 0; }
#concept::after  { bottom: 0; }

.concept-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 7vw, 90px);
  align-items: center;
}

.concept-text .section-en,
.concept-text .section-title { text-align: left; }

.concept-text .section-title { margin-bottom: 28px; }

.concept-body {
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 300;
  line-height: 2.4;
  color: rgba(240, 237, 232, 0.75);
  margin-bottom: 48px;
}

.concept-hours {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.hours-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.hours-label {
  font-family: var(--display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.hours-value {
  font-family: var(--display);
  font-size: 1.85rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--white);
}

.hours-sep {
  width: 1px;
  height: 52px;
  background: var(--border);
  flex-shrink: 0;
}

/* Concept image — decorative offset frame */
.concept-image {
  position: relative;
}

.concept-image::before {
  content: '';
  position: absolute;
  inset: -14px 14px 14px -14px;
  border: 1px solid var(--border);
  pointer-events: none;
}

.concept-image img {
  width: 100%;
  height: clamp(320px, 40vw, 520px);
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(1.05);
}

/* ================================================
   MENU
   ================================================ */
#menu {
  background: var(--bg);
  padding: var(--sec-gap) 0;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 0;
}

.menu-card {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  display: block;
}

.menu-card-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.65s var(--ease);
}

/* Dark gradient overlay */
.menu-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.78) 0%,
    rgba(0,0,0,0.2) 55%,
    transparent 100%
  );
  z-index: 1;
}

/* Gold border on hover */
.menu-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--gold);
  opacity: 0;
  z-index: 3;
  transition: opacity 0.35s;
}

.menu-card:hover .menu-card-img { transform: scale(1.06); }
.menu-card:hover::before { opacity: 1; }

.menu-card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 22px;
  z-index: 2;
  transform: translateY(6px);
  transition: transform 0.4s var(--ease);
}

.menu-card:hover .menu-card-body { transform: translateY(0); }

.menu-card-ja {
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  margin-bottom: 3px;
}

.menu-card-en {
  font-family: var(--display);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.menu-badge {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 10px;
  border: 1px solid var(--gold);
  font-family: var(--display);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  color: var(--gold);
}

/* ================================================
   SNS
   ================================================ */
#sns {
  background: var(--bg-alt);
  padding: var(--sec-gap) 0;
}

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

.sns-btn {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 40px;
  border: 1px solid var(--border-sub);
  min-width: 280px;
  transition: border-color 0.35s, background 0.35s;
}

.sns-btn svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.sns-btn-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.sns-name {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.1em;
}

.sns-handle {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-family: var(--sans);
  font-weight: 300;
}

.sns-instagram:hover {
  border-color: #c13584;
  background: rgba(193, 53, 132, 0.06);
}

.sns-tiktok:hover {
  border-color: #69c9d0;
  background: rgba(105, 201, 208, 0.06);
}

/* ================================================
   ACCESS
   ================================================ */
#access {
  background: var(--bg);
  padding: var(--sec-gap) 0;
}

.access-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 7vw, 90px);
  align-items: start;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 40px;
}

.info-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-sub);
}

.info-row dt {
  font-family: var(--display);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  padding-top: 3px;
}

.info-row dd {
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.9;
  color: rgba(240, 237, 232, 0.82);
}

.info-row dd a {
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s, color 0.3s;
}

.info-row dd a:hover {
  color: var(--gold);
  border-color: var(--gold);
}

.ext-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.ext-btn {
  padding: 9px 22px;
  border: 1px solid var(--border-sub);
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  font-weight: 300;
  transition: border-color 0.3s, color 0.3s;
}

.ext-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.access-map iframe {
  width: 100%;
  height: clamp(260px, 35vw, 440px);
  display: block;
}

/* ================================================
   FOOTER
   ================================================ */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 56px 0 36px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  text-align: center;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.footer-logo .logo-en  { font-size: 2rem; }
.footer-logo .logo-ja  { font-size: 0.65rem; letter-spacing: 0.16em; }

.footer-logo-img {
  height: 48px;
  width: auto;
  display: block;
  margin: 0 auto;
  filter: invert(1) hue-rotate(180deg);
}

.footer-sns {
  display: flex;
  gap: 16px;
}

.footer-sns a {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s, color 0.3s;
}

.footer-sns a svg { width: 17px; height: 17px; }

.footer-sns a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.footer-copy {
  font-family: var(--display);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

/* ================================================
   RESPONSIVE
   ================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .concept-inner,
  .access-inner {
    grid-template-columns: 1fr;
  }

  .concept-image::before { display: none; }

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

/* Mobile */
@media (max-width: 768px) {
  /* Nav */
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(12, 12, 12, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px var(--pad);
    gap: 28px;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }

  .nav-links.open { display: flex; }
  .nav-toggle     { display: flex; }

  .nav-links a { font-size: 1rem; letter-spacing: 0.2em; }
  .nav-tel     { padding: 10px 0 !important; border: none !important; font-size: 0.9rem !important; }
  .nav-reserve { padding: 10px 18px !important; font-size: 0.9rem !important; }

  /* Hero */
  .hero-title { letter-spacing: 0.15em; }
  .hero-tags  { font-size: 0.65rem; gap: 10px; }

  /* Concept hours */
  .concept-hours { gap: 18px; }
  .hours-value   { font-size: 1.5rem; }

  /* SNS */
  .sns-btn { min-width: unset; width: 100%; max-width: 400px; padding: 18px 24px; }

  /* Access */
  .info-row { grid-template-columns: 72px 1fr; }
}

@media (max-width: 480px) {
  .menu-grid { grid-template-columns: 1fr; }
  .menu-card { aspect-ratio: 3 / 2; }
}