/* ─── 变量 ─────────────────────────────── */
:root {
  --bg: #FAFAF7;
  --ink: #1A1A1A;
  --accent: #8B6347;
  --accent-light: #C4A882;
  --surface: #F2EDE7;
  --border: #E0D8CE;
  --muted: #7A7068;
  --radius: 4px;
  --transition: 0.25s ease;
}

/* ─── 基础重置 ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Serif SC', 'Noto Serif', Georgia, serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ─── 导航 ─────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 64px;
  background: rgba(250,250,247,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.nav.scrolled { border-color: var(--border); }

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.nav-logo img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 50%;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.nav-logo-ja {
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-family: 'Noto Sans SC', sans-serif;
}

.nav-links {
  display: flex;
  gap: 2rem;
  font-size: 0.9rem;
}
.nav-links a {
  color: var(--muted);
  transition: color var(--transition);
  letter-spacing: 0.03em;
}
.nav-links a:hover { color: var(--ink); }

/* ─── HERO ─────────────────────────────── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: #2a2420;
}
.hero-bg img {
  opacity: 0.55;
  transform: scale(1.04);
  transition: transform 8s ease;
}
.hero-bg img.loaded { transform: scale(1); }

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: 2rem;
}
.hero-logo {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: contain;
  margin: 0 auto 1.5rem;
  border: 2px solid rgba(255,255,255,0.3);
  padding: 4px;
  background: rgba(255,255,255,0.08);
}
.hero-ja {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  opacity: 0.7;
  margin-bottom: 0.5rem;
  font-family: 'Noto Sans SC', sans-serif;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.1;
  margin-bottom: 1rem;
}
.hero-sub {
  font-size: 0.95rem;
  opacity: 0.75;
  letter-spacing: 0.06em;
}
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: scrollBounce 2s infinite;
}
.hero-scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.4);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ─── 通用容器 ─────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ─── 关于 ─────────────────────────────── */
.about {
  padding: 7rem 0;
  background: var(--surface);
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.about-text h2 {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.about-text h3 {
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}
.about-text p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 1rem;
}
.about-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.about-photos .photo-item {
  overflow: hidden;
  border-radius: var(--radius);
}
.about-photos .photo-item:first-child {
  grid-column: 1 / -1;
  height: 260px;
}
.about-photos .photo-item:not(:first-child) { height: 160px; }
.about-photos .photo-item img {
  transition: transform 0.6s ease;
}
.about-photos .photo-item:hover img { transform: scale(1.04); }

/* ─── 菜品列表页 ────────────────────────── */
.menu-section {
  padding: 7rem 0;
}
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
}

/* 分类筛选 */
.filters {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 3rem;
  scrollbar-width: none;
}
.filters::-webkit-scrollbar { display: none; }
.filter-btn {
  flex-shrink: 0;
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--border);
  background: none;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  border-radius: 2rem;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}
.filter-btn:hover {
  border-color: var(--accent-light);
  color: var(--ink);
}
.filter-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

/* 菜品网格 */
.dishes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.dish-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.dish-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}
.dish-card.hidden { display: none; }

.dish-card-img {
  position: relative;
  padding-top: 75%;
  overflow: hidden;
}
.dish-card-img img {
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.dish-card:hover .dish-card-img img { transform: scale(1.06); }

.dish-card-cat {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: rgba(26,26,26,0.65);
  color: #fff;
  font-size: 0.7rem;
  padding: 0.2rem 0.55rem;
  border-radius: 2rem;
  letter-spacing: 0.03em;
  backdrop-filter: blur(4px);
}

.dish-card-body {
  padding: 0.85rem 1rem;
}
.dish-card-name {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.3;
}
.dish-card-hint {
  font-size: 0.78rem;
  color: var(--accent);
  margin-top: 0.25rem;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition), transform var(--transition);
}
.dish-card:hover .dish-card-hint {
  opacity: 1;
  transform: translateY(0);
}

/* ─── 单菜页面 ─────────────────────────── */
.dish-page {
  padding-top: 64px;
  min-height: 100vh;
}

.dish-hero {
  position: relative;
  height: 60vh;
  min-height: 400px;
  background: #1a1a1a;
  overflow: hidden;
}
.dish-hero img {
  opacity: 0.85;
  object-position: center;
}
.dish-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,26,26,0.8) 0%, rgba(26,26,26,0.15) 50%, transparent 100%);
}
.dish-hero-info {
  position: absolute;
  bottom: 2.5rem;
  left: 0; right: 0;
  padding: 0 2.5rem;
  color: #fff;
}
.dish-hero-cat {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  opacity: 0.7;
  margin-bottom: 0.5rem;
}
.dish-hero-name {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.dish-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}

.dish-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 3rem;
  transition: color var(--transition);
}
.dish-back:hover { color: var(--accent); }
.dish-back::before { content: '←'; }

.dish-section-title {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.ingredients-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}
.ingredient-tag {
  padding: 0.3rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2rem;
  font-size: 0.85rem;
  color: var(--ink);
}

.recipe-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  background: none;
  border: none;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--muted);
  cursor: pointer;
  transition: color var(--transition);
  letter-spacing: 0.05em;
}
.recipe-toggle:hover { color: var(--ink); }
.recipe-toggle-icon {
  transition: transform var(--transition);
  font-size: 1rem;
  line-height: 1;
}
.recipe-toggle.open .recipe-toggle-icon { transform: rotate(180deg); }

.recipe-steps {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease;
}
.recipe-steps.open { max-height: 600px; }

.steps-list {
  padding: 1.5rem 0 0.5rem;
  counter-reset: step;
}
.step-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.2rem;
  font-size: 0.93rem;
  line-height: 1.75;
  counter-increment: step;
}
.step-item::before {
  content: counter(step, decimal-leading-zero);
  flex-shrink: 0;
  width: 2rem;
  color: var(--accent-light);
  font-size: 0.78rem;
  padding-top: 0.3rem;
  font-family: 'Noto Sans SC', sans-serif;
  letter-spacing: 0.02em;
}

.recipe-none {
  padding: 1.5rem 0;
  font-size: 0.88rem;
  color: var(--muted);
  font-style: italic;
}

/* 相关菜品 */
.related-section { margin-top: 5rem; }
.related-section h3 {
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.related-card {
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition);
}
.related-card:hover { transform: translateY(-2px); }
.related-card-img {
  padding-top: 75%;
  position: relative;
  overflow: hidden;
}
.related-card-img img {
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-name {
  font-size: 0.82rem;
  padding: 0.5rem 0.2rem;
  color: var(--ink);
}

/* ─── 页脚 ─────────────────────────────── */
.footer {
  background: var(--ink);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 2.5rem 1rem;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}
.footer strong { color: rgba(255,255,255,0.8); }

/* ─── 响应式 ────────────────────────────── */
@media (max-width: 1024px) {
  .dishes-grid { grid-template-columns: repeat(3, 1fr); }
  .related-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .nav { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .about-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .dishes-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .dish-hero-info { padding: 0 1.25rem; }
  .dish-content { padding: 2.5rem 1.25rem 4rem; }
}
@media (max-width: 480px) {
  .dishes-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .dish-card-body { padding: 0.65rem 0.75rem; }
  .dish-card-name { font-size: 0.85rem; }
}