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

:root {
  /* LIGHT MODE (DEFAULT) - Food Theme */
  color-scheme: light dark;
  --bg-primary: #fffef9;
  --bg-secondary: #f8f5f0;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --border-color: rgba(139, 69, 19, 0.12);
  --border-hover: rgba(139, 69, 19, 0.25);
  --text-primary: #2c1810;
  --text-secondary: rgba(44, 24, 16, 0.7);
  --text-tertiary: rgba(44, 24, 16, 0.5);
  --accent-orange: #e67e22;
  --accent-red: #e74c3c;
  --accent-gold: #f39c12;
  --gradient-1: #e67e22;
  --gradient-2: #e74c3c;
  --gradient-3: #f39c12;
  --glow: rgba(230, 126, 34, 0.3);
  --blob-opacity: 0.08;
  --radius: 16px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #1a1512;
  --bg-secondary: #241e1a;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.12);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  --text-primary: #fffef9;
  --text-secondary: rgba(255, 254, 249, 0.75);
  --text-tertiary: rgba(255, 254, 249, 0.5);
  --glow: rgba(243, 156, 18, 0.4);
  --blob-opacity: 0.18;
}

body.theme-transition,
body.theme-transition * {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease !important;
}

html { scroll-behavior: smooth; }
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--gradient-1), var(--gradient-3)); border-radius: 10px; }

/* ============================================
   ANIMATED BACKGROUND
   ============================================ */
.bg-animation { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.blob {
  position: absolute; border-radius: 50%; filter: blur(100px);
  opacity: var(--blob-opacity); animation: blobFloat 25s ease-in-out infinite;
}
.blob-1 { width: 600px; height: 600px; background: var(--gradient-1); top: -200px; right: -100px; }
.blob-2 { width: 500px; height: 500px; background: var(--gradient-2); bottom: -150px; left: -100px; animation-delay: -8s; }
.blob-3 { width: 400px; height: 400px; background: var(--gradient-3); top: 40%; left: 50%; transform: translate(-50%, -50%); animation-delay: -15s; }

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(50px, -70px) scale(1.1); }
  66% { transform: translate(-30px, 50px) scale(0.9); }
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; padding: 14px 0; transition: var(--transition); }
.navbar::before {
  content: ""; position: absolute; inset: 0; background: var(--bg-primary); opacity: 0.9;
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-color);
}
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 1; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--text-primary); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.logo-icon { font-size: 1.3rem; animation: bounce 3s ease infinite; }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

.nav-links { 
  list-style: none; 
  display: flex; 
  gap: 24px; 
  flex: 1; /* Thêm dòng này */
  justify-content: center; /* Thêm dòng này để căn giữa chữ */
}
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: var(--transition); position: relative; }
.nav-links a::after { content: ""; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: linear-gradient(90deg, var(--gradient-1), var(--gradient-3)); transition: var(--transition); }
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.theme-toggle {
  margin-left: 5px;
  background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-primary);
  width: 40px; height: 40px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: var(--transition);
}
.theme-toggle:hover { background: var(--bg-card-hover); border-color: var(--border-hover); transform: scale(1.1); }

.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.3rem; cursor: pointer; padding: 8px; z-index: 1001; }

/* ============================================
   BUTTONS
   ============================================ */
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
  color: white; text-decoration: none; border-radius: 100px; font-weight: 600; font-size: 0.95rem;
  transition: var(--transition); box-shadow: 0 4px 25px var(--glow); border: none; cursor: pointer;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 40px var(--glow); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; background: transparent; color: var(--text-primary);
  text-decoration: none; border-radius: 100px; font-weight: 600; font-size: 0.95rem;
  transition: var(--transition); border: 2px solid var(--border-color);
}
.btn-secondary:hover { border-color: var(--gradient-1); color: var(--gradient-1); transform: translateY(-3px); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; background: transparent; color: var(--text-primary);
  text-decoration: none; border-radius: 100px; font-weight: 600; font-size: 0.95rem;
  transition: var(--transition); border: 2px solid var(--text-primary);
}
.btn-outline:hover { background: var(--text-primary); color: var(--bg-primary); transform: translateY(-3px); }

.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ============================================
   HERO SECTION
   ============================================ */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 120px 24px 80px; position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; }
.hero-content { 
  flex: 1; 
  max-width: 650px; 
  display: flex;             /* Thêm */
  flex-direction: column;    /* Thêm */
  align-items: center;       /* Thêm */
  text-align: center;        /* Thêm */
}

.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 100px; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 24px; animation: fadeInUp 0.8s ease forwards; backdrop-filter: blur(10px); }
.hero-badge i { color: var(--accent-gold); }

.hero-title { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 900; line-height: 1.15; letter-spacing: -1px; margin-bottom: 20px; animation: fadeInUp 0.8s ease 0.1s forwards; opacity: 0; }
.hero-description { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 32px; animation: fadeInUp 0.8s ease 0.2s forwards; opacity: 0; }

.hero-cta { 
  display: flex; 
  gap: 16px; 
  margin-bottom: 40px; 
  flex-wrap: wrap; 
  justify-content: center;   /* Thêm dòng này */
  animation: fadeInUp 0.8s ease 0.3s forwards; 
  opacity: 0; 
}

.hero-stats { 
  display: flex; 
  align-items: center; 
  justify-content: center;   /* Thêm dòng này */
  gap: 24px; 
  animation: fadeInUp 0.8s ease 0.4s forwards; 
  opacity: 0; 
}
.stat { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.stat-number { font-size: 1.8rem; font-weight: 800; background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-label { font-size: 0.8rem; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.stat-divider { width: 1px; height: 40px; background: var(--border-color); }

/* Food Showcase */
.hero-visual { flex: 1; display: flex; justify-content: center; align-items: center; position: relative; min-height: 400px; }
.food-showcase { position: relative; width: 100%; max-width: 400px; }
.food-card {
  position: absolute; display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px 20px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); backdrop-filter: blur(12px); font-weight: 600; font-size: 0.9rem;
  animation: float 7s ease-in-out infinite; box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.food-card span { font-size: 0.85rem; color: var(--text-secondary); }
.card-1 { top: 5%; left: 10%; animation-delay: 0s; }
.card-2 { top: 35%; right: 5%; animation-delay: -1.5s; }
.card-3 { top: 65%; left: 15%; animation-delay: -3s; }
.card-4 { bottom: 10%; right: 15%; animation-delay: -4.5s; }
.card-5 { top: 15%; left: 45%; animation-delay: -2s; }
@keyframes float { 0%, 100% { transform: translateY(0px); } 50% { transform: translateY(-20px); } }

/* ============================================
   LOCATION CARD
   ============================================ */
.location-section { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 0 24px 40px; }
.location-card {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 24px 32px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); backdrop-filter: blur(12px);
}
.location-info h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.location-info p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 4px; }
.location-info p strong { color: var(--text-primary); }
.location-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px;
  background: var(--bg-secondary); border: 1px solid var(--border-color);
  border-radius: 100px; text-decoration: none; color: var(--text-primary);
  font-weight: 600; font-size: 0.9rem; transition: var(--transition);
}
.location-btn:hover { background: var(--gradient-1); border-color: var(--gradient-1); color: white; transform: translateY(-2px); }

/* ============================================
   SEASONAL HOTPOT SECTION
   ============================================ */
.menu-section { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 60px 24px 80px; }
.menu-section.secondary { padding-top: 20px; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag { display: inline-block; padding: 6px 16px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 100px; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 16px; backdrop-filter: blur(10px); }
.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; letter-spacing: -1px; margin-bottom: 12px; }
.section-subtitle { color: var(--text-secondary); font-size: 1.05rem; max-width: 500px; margin: 0 auto; }

.hotpot-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-bottom: 40px; }

.hotpot-card {
  position: relative; display: flex; flex-direction: column; padding: 24px;
  background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  text-decoration: none; color: var(--text-primary); transition: var(--transition);
  opacity: 0; transform: translateY(30px); backdrop-filter: blur(12px); overflow: hidden;
}
.hotpot-card.fade-in { opacity: 1; transform: translateY(0); }
.hotpot-card:hover { border-color: var(--border-hover); transform: translateY(-6px); box-shadow: 0 20px 50px rgba(0,0,0,0.08); }

/* Season colors */
.hotpot-card.autumn { border-top: 4px solid #d35400; }
.hotpot-card.winter { border-top: 4px solid #3498db; }
.hotpot-card.spring { border-top: 4px solid #e91e63; }
.hotpot-card.summer { border-top: 4px solid #2ecc71; }

.hotpot-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.season-icon { font-size: 1.8rem; }
.hotpot-header h3 { font-size: 1.2rem; font-weight: 700; }
.japanese-name { font-size: 0.8rem; color: var(--text-tertiary); font-style: italic; }

.hotpot-content { flex: 1; margin-bottom: 16px; }
.ingredients { font-weight: 600; margin-bottom: 8px; }
.desc-en { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }
.note { display: inline-block; margin-top: 8px; padding: 4px 12px; background: rgba(231, 76, 60, 0.1); color: var(--accent-red); border-radius: 100px; font-size: 0.8rem; font-weight: 500; }

.hotpot-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 16px; border-top: 1px solid var(--border-color); }
.price { display: flex; flex-direction: column; gap: 2px; }
.price-large { font-weight: 700; color: var(--accent-red); }
.price-small { font-size: 0.85rem; color: var(--text-secondary); }
.hotpot-arrow {
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--bg-card-hover); border: 1px solid var(--border-color);
  font-size: 0.75rem; color: var(--text-tertiary); transition: var(--transition);
}
.hotpot-card:hover .hotpot-arrow { transform: translateX(4px); color: var(--gradient-1); }

/* ============================================
   MENU GRID (Other dishes)
   ============================================ */
.menu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-bottom: 40px; }

.menu-item {
  display: flex; align-items: center; gap: 14px; padding: 16px;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius); text-decoration: none; color: var(--text-primary);
  transition: var(--transition); opacity: 0; transform: translateY(20px);
}
.menu-item.fade-in { opacity: 1; transform: translateY(0); }
.menu-item:hover { border-color: var(--border-hover); transform: translateY(-4px); background: var(--bg-card-hover); }

.dish-icon { font-size: 1.8rem; }
.dish-info { flex: 1; min-width: 0; }
.dish-info h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 2px; }
.dish-en { font-size: 0.8rem; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.note-mini { display: inline-block; margin-top: 4px; font-size: 0.75rem; color: var(--accent-red); }
.dish-price { font-weight: 700; color: var(--accent-red); white-space: nowrap; }
.dish-price.highlight { color: var(--gradient-1); font-size: 1.1rem; }

.menu-cta { text-align: center; }

/* ============================================
   BRANDS SECTION
   ============================================ */
.brands-section { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 60px 24px 80px; background: var(--bg-secondary); }
.brands-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; }

.brand-card {
  position: relative; display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 24px 16px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); text-decoration: none; color: var(--text-primary);
  transition: var(--transition); opacity: 0; transform: translateY(20px); backdrop-filter: blur(12px);
}
.brand-card.fade-in { opacity: 1; transform: translateY(0); }
.brand-card:hover { border-color: var(--border-hover); transform: translateY(-6px); box-shadow: 0 20px 50px rgba(0,0,0,0.08); }

.brand-icon {
  width: 60px; height: 60px; display: flex; align-items: center; justify-content: center;
  background: var(--bg); border-radius: 16px; font-size: 1.6rem; color: white;
  margin-bottom: 14px; transition: var(--transition); box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.brand-card:hover .brand-icon { transform: scale(1.1); }

.brand-name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.brand-desc { font-size: 0.8rem; color: var(--text-tertiary); }

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 0 24px 80px; }
.cta-card {
  text-align: center; padding: 60px 40px; background: var(--bg-card);
  border: 1px solid var(--border-color); border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}
.cta-card h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin-bottom: 16px; }
.cta-card > p { color: var(--text-secondary); margin-bottom: 32px; font-size: 1.05rem; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ============================================
   FOOTER
   ============================================ */
.footer { position: relative; z-index: 1; border-top: 1px solid var(--border-color); padding: 40px 24px; background: var(--bg-secondary); }
.footer-content { max-width: 1200px; margin: 0 auto; text-align: center; }
.footer-brand { margin-bottom: 24px; }
.footer-brand .logo-icon { font-size: 1.5rem; margin-right: 8px; }
.footer-brand strong { font-size: 1.3rem; font-weight: 800; }
.footer-brand p { color: var(--text-secondary); font-size: 0.9rem; margin-top: 4px; }

.footer-info { margin-bottom: 24px; }
.footer-info p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 6px; }
.footer-info i { margin-right: 6px; color: var(--gradient-1); }

.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 24px; flex-wrap: wrap; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; transition: var(--transition); display: flex; align-items: center; gap: 6px; }
.footer-links a:hover { color: var(--text-primary); }

.footer-copyright { color: var(--text-tertiary); font-size: 0.85rem; }
.footer-copyright a { color: var(--gradient-1); text-decoration: none; font-weight: 500; }
.footer-copyright a:hover { text-decoration: underline; }

/* ============================================
   UTILS & ANIMATIONS
   ============================================ */
.gradient-text { background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

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

.scroll-top {
  position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
  color: white; border: none; border-radius: 50%; font-size: 1rem;
  cursor: pointer; z-index: 999; opacity: 0; visibility: hidden;
  transform: translateY(20px); transition: var(--transition); box-shadow: 0 4px 20px var(--glow);
}
.scroll-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.scroll-top:hover { transform: translateY(-4px); box-shadow: 0 8px 30px var(--glow); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .hero { flex-direction: column; text-align: center; padding-top: 100px; min-height: auto; }
  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { min-height: 250px; width: 100%; margin-top: 40px; }
  .food-card { padding: 12px 16px; font-size: 0.8rem; }
  .food-card span { font-size: 0.75rem; }
  .card-1 { top: 0; left: 0; } .card-2 { top: 20%; right: 0; } .card-3 { top: 50%; left: 5%; } .card-4 { bottom: 0; right: 5%; } .card-5 { top: 5%; left: 40%; }

  .nav-links { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: var(--bg-primary); border-left: 1px solid var(--border-color); flex-direction: column; padding: 80px 32px 32px; gap: 24px; transition: var(--transition); z-index: 999; backdrop-filter: blur(20px); }
  .nav-links.active { right: 0; }
  .nav-toggle { display: block; }

  .location-card { flex-direction: column; text-align: center; }
  .hotpot-grid, .menu-grid, .brands-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-buttons { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .hero-stats { gap: 16px; }
  .stat-number { font-size: 1.4rem; }
  .btn-primary, .btn-secondary, .btn-outline { width: 100%; justify-content: center; }
  .hotpot-grid, .menu-grid, .brands-grid { grid-template-columns: 1fr; }
  .hotpot-card { padding: 20px; }
  .menu-item { padding: 12px; gap: 10px; }
  .dish-icon { font-size: 1.5rem; }
}

/* Custom Zalo Icon */
.zalo-icon {
  background-color: #98accb;
  color: white;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}