/* ==========================================================
   日本料理さくま — サイトスタイル
   割烹・懐石にふさわしい、落ち着いた高級感のあるデザイン
   ========================================================== */

:root {
  --color-bg: #14120f;
  --color-bg-alt: #1b1814;
  --color-bg-panel: #201c17;
  --color-text: #efe8db;
  --color-text-muted: #bfb5a2;
  --color-gold: #c6a15b;
  --color-gold-soft: #a98a4c;
  --color-line: rgba(198, 161, 91, 0.28);
  --color-tbd-bg: rgba(198, 161, 91, 0.14);
  --color-tbd-text: #e7c98a;

  --font-serif: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "游明朝", "Noto Serif JP", serif;
  --font-sans: "Hiragino Kaku Gothic ProN", "Yu Gothic", "游ゴシック", "Noto Sans JP", sans-serif;

  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.9;
  letter-spacing: 0.03em;
  -webkit-font-smoothing: antialiased;
}

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

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

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 共通見出し ---------- */

.section { padding: 140px 0; }

.section-eyebrow {
  font-family: var(--font-serif);
  color: var(--color-gold);
  letter-spacing: 0.3em;
  font-size: 0.78rem;
  margin: 0 0 12px;
  text-align: center;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  margin: 0 0 40px;
  font-weight: 600;
  letter-spacing: 0.12em;
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 46px;
  height: 1px;
  background: var(--color-gold);
  margin: 20px auto 0;
}

.section-lead {
  max-width: 680px;
  margin: 0 auto 64px;
  text-align: center;
  color: var(--color-text-muted);
  line-height: 2.15;
  letter-spacing: 0.02em;
}

/* ---------- 要入力マーカー ---------- */

[data-intl-only] { display: none; }

.intl-note {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.8em;
  color: var(--color-gold-soft);
}

.tbd {
  display: block;
  width: fit-content;
  background: var(--color-tbd-bg);
  color: var(--color-tbd-text);
  border: 1px dashed var(--color-gold-soft);
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 0.78em;
  letter-spacing: 0.05em;
  margin-top: 10px;
}

.menu-note .tbd {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- ヘッダー ---------- */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease;
  padding: 22px 0;
}

.site-header.scrolled {
  background: rgba(20, 18, 15, 0.92);
  backdrop-filter: blur(6px);
  box-shadow: 0 1px 0 var(--color-line);
  padding: 12px 0;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
  flex-shrink: 0;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.14em;
  color: var(--color-text);
  white-space: nowrap;
}

.logo-sub {
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--color-gold);
  margin-top: 2px;
}

.main-nav {
  display: flex;
  gap: 36px;
  margin-left: auto;
}

.main-nav a {
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  position: relative;
  padding-bottom: 4px;
}

.main-nav a:hover { color: var(--color-gold); }

.lang-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border: 1px solid var(--color-line);
  border-radius: 3px;
  padding: 2px;
  flex-shrink: 0;
  max-width: 220px;
  justify-content: center;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  padding: 5px 9px;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

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

.lang-btn.is-active {
  background: var(--color-gold);
  color: #14120f;
  font-weight: 600;
}

.header-tel {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-gold);
  white-space: nowrap;
}

.tel-icon {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--color-gold);
  border-radius: 3px;
  padding: 2px 5px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  width: 100%;
  height: 1px;
  background: var(--color-gold);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- ヒーロー ---------- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 120px 24px 80px;
  background-color: #14120f;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: saturate(2.1) contrast(1.08);
  z-index: 0;
}

.hero-bg video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,18,15,0.6) 0%, rgba(20,18,15,0.78) 55%, rgba(16,14,11,0.94) 100%);
  z-index: 1;
  pointer-events: none;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    repeating-linear-gradient(0deg, rgba(198,161,91,0.035) 0px, rgba(198,161,91,0.035) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, rgba(198,161,91,0.035) 0px, rgba(198,161,91,0.035) 1px, transparent 1px, transparent 64px);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 3; }

.kamon {
  display: block;
  width: clamp(144px, 18vw, 240px);
  height: auto;
  margin: 0 auto 32px;
  filter: drop-shadow(0 0 18px rgba(239,232,219,0.25));
}

.kamon-ring {
  fill: none;
  stroke: #ffffff;
  stroke-width: 2.5;
}

.kamon-bar {
  fill: #ffffff;
}

.hero-eyebrow {
  color: var(--color-gold);
  letter-spacing: 0.2em;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.5;
  letter-spacing: 0.08em;
  margin: 0 0 24px;
  font-weight: 600;
}

.hero-shop-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  margin: 0 0 48px;
}

.hero-cta {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  z-index: 3;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
}

.hero-scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 40px;
  background: var(--color-gold);
  margin: 10px auto 0;
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ---------- ボタン ---------- */

.btn {
  display: inline-block;
  padding: 15px 34px;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  border-radius: 2px;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
  border: 1px solid var(--color-gold);
}

.btn-primary {
  background: var(--color-gold);
  color: #14120f;
  font-weight: 600;
}

.btn-primary:hover {
  background: #d9b876;
  border-color: #d9b876;
}

.btn-outline {
  background: transparent;
  color: var(--color-gold);
}

.btn-outline:hover {
  background: rgba(198,161,91,0.1);
}

.btn-large {
  padding: 18px 48px;
  font-size: 1.05rem;
  margin-top: 20px;
}

/* ---------- こだわり ---------- */

.concept { background: var(--color-bg-alt); }

.concept-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-bottom: 64px;
}

.concept-card {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: 2px;
}

.concept-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.concept-card:hover .concept-card-img {
  transform: scale(1.06);
}

.concept-card-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,13,10,0.45) 0%, rgba(15,13,10,0.55) 50%, rgba(15,13,10,0.72) 100%);
}

.concept-card-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
}

.concept-num {
  display: block;
  font-family: var(--font-serif);
  color: var(--color-gold-soft);
  font-size: 1.8rem;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}

.concept-card h3 {
  font-family: var(--font-serif);
  font-size: 4.5rem;
  letter-spacing: 0.05em;
  margin: 0;
  line-height: 1;
  color: var(--color-gold);
}

.chef-intro {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 64px 24px;
  max-width: 640px;
}

.chef-label {
  color: var(--color-gold);
  letter-spacing: 0.3em;
  font-size: 0.75rem;
  margin: 0 0 10px;
}

.chef-name {
  font-family: 'Yuji Syuku', var(--font-serif);
  font-size: 3rem;
  font-weight: normal;
  letter-spacing: 0.2em;
  margin: 0 0 18px;
  color: var(--color-gold);
}

.chef-profile {
  display: inline-grid;
  grid-template-columns: auto 1fr;
  column-gap: 24px;
  row-gap: 12px;
  margin: 0 auto;
  text-align: left;
  max-width: 100%;
}

.chef-profile dt {
  color: var(--color-gold);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  padding-top: 1px;
}

.chef-profile dd {
  margin: 0;
  color: var(--color-text-muted);
}

.chef-message {
  max-width: 560px;
  margin: 32px auto 0;
  color: var(--color-text);
}

.chef-quote-text {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.1rem;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

.chef-quote-author {
  display: block;
  margin-top: 16px;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-gold-soft);
}

/* ---------- 燕子花図バナー ---------- */

.kakitsubata-banner {
  position: relative;
  width: 100%;
  min-height: 640px;
  overflow: hidden;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
}

.kakitsubata-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.kakitsubata-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,13,10,0.55) 0%, rgba(15,13,10,0.72) 55%, rgba(15,13,10,0.6) 100%);
}

/* ---------- ギャラリー ---------- */

.gallery { background: var(--color-bg-alt); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.gallery-item {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: 2px;
  padding: 0;
  background: none;
  cursor: pointer;
  display: block;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

@media (max-width: 720px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
}

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- お品書き ---------- */

.menu {
  position: relative;
  background-image:
    linear-gradient(180deg, rgba(15,13,10,0.82) 0%, rgba(15,13,10,0.88) 55%, rgba(15,13,10,0.82) 100%),
    url('../images/kobai-zu.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.menu-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 24px;
}

.menu-list-single { max-width: 680px; margin-left: auto; margin-right: auto; }

.menu-item {
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  padding: 32px;
  border-radius: 2px;
}

.menu-item-feature {
  border-color: var(--color-gold-soft);
  box-shadow: 0 0 0 1px rgba(198,161,91,0.15) inset;
}

.menu-item-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.menu-item-head h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  margin: 0;
  color: var(--color-text);
}

.menu-price {
  font-family: var(--font-serif);
  color: var(--color-gold);
  font-size: 1.05rem;
}

.menu-item p { color: var(--color-text-muted); margin: 0; font-size: 0.92rem; }

.menu-price-note {
  margin-top: 14px !important;
  font-size: 0.78rem !important;
  color: var(--color-gold-soft) !important;
}

.menu-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto;
}

/* ---------- アクセス ---------- */

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

.access-info {
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
  padding: 40px;
  border-radius: 2px;
}

.access-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px 20px;
  margin: 0 0 32px;
}

.access-info dt {
  color: var(--color-gold);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  padding-top: 2px;
}

.access-info dd {
  margin: 0;
  color: var(--color-text-muted);
}

.access-info dd a { color: var(--color-text); border-bottom: 1px solid var(--color-gold-soft); }

.access-tel-btn { width: 100%; text-align: center; }

.access-map { position: relative; }

.access-map iframe {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border: 1px solid var(--color-line);
  filter: grayscale(0.4) contrast(1.05);
}

/* ---------- ご予約 ---------- */

.reserve {
  background: var(--color-bg-alt);
  text-align: center;
}

.reserve-inner p { color: var(--color-text-muted); }

.reserve-cta {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.reserve-cta .btn-large { margin-top: 0; }

/* ---------- フッター ---------- */

.site-footer {
  background: #0e0c0a;
  border-top: 1px solid var(--color-line);
  padding: 48px 24px;
  text-align: center;
}

.footer-inner p {
  margin: 4px 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-shop-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  color: var(--color-text);
  margin-bottom: 12px !important;
}

.footer-inner a { border-bottom: 1px solid var(--color-gold-soft); }

.footer-copy {
  margin-top: 18px !important;
  font-size: 0.72rem;
  color: #6f665a;
}

/* ---------- フェードイン ---------- */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ---------- レスポンシブ ---------- */

@media (max-width: 960px) {
  .concept-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .access-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .concept-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .main-nav {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: #17140f;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 28px;
    padding: 24px 40px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    border-left: 1px solid var(--color-line);
  }

  .main-nav.open { transform: translateX(0); }

  .header-tel { display: none; }

  .lang-btn { padding: 5px 6px; font-size: 0.64rem; }

  .nav-toggle { display: flex; }

  .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); }

  .section { padding: 88px 0; }
}

/* ---------- ライトボックス ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(10, 9, 7, 0.94);
}

.lightbox.is-open { display: flex; }

.lightbox-track {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  touch-action: pan-y;
}

.lightbox-img {
  max-width: min(92vw, 1100px);
  max-height: 86vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--color-line);
  user-select: none;
  -webkit-user-drag: none;
  transition: opacity 0.2s ease;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  background: none;
  border: 1px solid var(--color-line);
  color: var(--color-gold);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s ease, color 0.2s ease;
}

.lightbox-close:hover,
.lightbox-nav:hover {
  background: rgba(198,161,91,0.12);
  color: #d9b876;
}

.lightbox-close {
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  font-size: 1.6rem;
  line-height: 1;
}

.lightbox-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  font-size: 1.1rem;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
}

@media (max-width: 600px) {
  .lightbox-nav { width: 40px; height: 40px; }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
  .lightbox-close { top: 12px; right: 12px; }
}