/* IMPRESSIVE HOLIDAY LANDING PAGE STYLESHEET */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,600;0,700;0,800;1,600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Premium Luminous Chinese Theme Palette (Dark background, glowing elements) */
  --primary: #00f2fe;       /* Luminous Electric Cyan (Bright & glowing!) */
  --secondary: #ffb03b;     /* Imperial Gold (Vibrant & bright!) */
  --accent: #ff4757;        /* Vibrant China Red (Bright & glowing!) */
  --china-red: #ff4757;     /* Luminous Red */
  --dark-bg: #050811;       /* Deep slate black (Nền tối cực sang trọng) */
  --dark-surface: #0e1628;  /* Lighter card surface background */
  --light-text: #ffffff;    /* Pure bright white for headings (Chữ trắng sáng sủa) */
  --muted-text: #e2e8f0;    /* Slate-200 for extremely readable body text (Chữ sáng sủa, dễ đọc) */
  --detail-text: #cbd5e1;   /* Slate-300 for secondary text details */
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(14, 22, 40, 0.85); /* Premium dark glassmorphism */
  --glass-border: rgba(255, 255, 255, 0.07);
  --glow-cyan: rgba(0, 242, 254, 0.3);
  --glow-gold: rgba(255, 176, 59, 0.35);
  --glow-red: rgba(255, 71, 87, 0.35);
  
  /* Fonts */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background-color: var(--dark-bg);
  color: var(--light-text);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

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

/* Scrollbar Style */
::-webkit-scrollbar {
  width: 8px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--dark-bg);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section-padding {
  padding: 5rem 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 3.5rem 0;
  }
}

.section-title-wrapper {
  margin-bottom: 2.5rem;
  text-align: center;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--light-text) 50%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.section-subtitle {
  color: var(--muted-text);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-medium);
}

.header-scrolled {
  padding: 0.5rem 0;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  transition: var(--transition-medium);
}

.header-scrolled .nav-container {
  height: 3.75rem;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  height: 100%;
}

.logo-img {
  height: 2.75rem;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

@media (max-width: 992px) {
  .nav-links {
    display: none; /* Hidden on mobile/tablet, handled by menu buttons or floating CTAs */
  }
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted-text);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.cta-nav-btn {
  background: linear-gradient(135deg, #00f2fe, #4facfe);
  color: #050811;
  padding: 0.6rem 1.25rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.4);
}

.cta-nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 242, 254, 0.6);
  color: #050811;
}

/* Hero Banner Slider */
.hero-section {
  position: relative;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  background-color: #05070d;
}

.slider-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.2s cubic-bezier(0.25, 1, 0.5, 1), visibility 1.2s;
  z-index: 1;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transform: scale(1.08);
  transition: transform 8s ease-out;
}

.slide.active .slide-bg {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(9, 15, 26, 0.3) 0%,
    rgba(9, 15, 26, 0.5) 50%,
    rgba(9, 15, 26, 0.9) 100%
  );
  z-index: 3;
}

.hero-content {
  position: relative;
  z-index: 4;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 1.25rem;
  max-width: 850px;
  margin: 0 auto;
}

.hero-tagline {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
  opacity: 0;
  transform: translateY(20px);
  transition: transform 0.8s 0.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s 0.2s;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--light-text) 60%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0;
  transform: translateY(30px);
  transition: transform 0.8s 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s 0.4s;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--muted-text);
  margin-bottom: 2.25rem;
  max-width: 600px;
  opacity: 0;
  transform: translateY(20px);
  transition: transform 0.8s 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s 0.6s;
}

.hero-ctas {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: transform 0.8s 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s 0.8s;
}

.slide.active .hero-tagline,
.slide.active .hero-title,
.slide.active .hero-desc,
.slide.active .hero-ctas {
  opacity: 1;
  transform: translateY(0);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, #ffb03b, #ff9f43);
  color: #050811;
  font-weight: 700;
  box-shadow: 0 4px 20px var(--glow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 176, 59, 0.6);
  background: linear-gradient(135deg, #ffc05a, #ffaf60);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--light-text);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

/* Slider Controls */
.slider-dots {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.75rem;
  z-index: 5;
}

.slider-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition-fast);
}

.slider-dot.active {
  background-color: var(--primary);
  transform: scale(1.3);
  box-shadow: 0 0 10px var(--primary);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    gap: 0.75rem;
  }
  .btn {
    width: 100%;
  }
}

/* Search and Filters */
.filter-section {
  background: linear-gradient(to bottom, var(--dark-bg), var(--dark-surface));
  padding-bottom: 2rem;
}

.filter-wrapper {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  margin-top: -3.5rem;
  position: relative;
  z-index: 10;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
}

.filter-tabs {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: none; /* Firefox */
}

.filter-tabs::-webkit-scrollbar {
  display: none; /* Safari & Chrome */
}

.filter-tab {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--muted-text);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-tab:hover, .filter-tab.active {
  background: linear-gradient(135deg, var(--primary), #00b8d4);
  color: #050811;
  font-weight: 700;
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--glow-cyan);
}

/* Highlight Tours List */
.tours-section {
  background-color: var(--dark-surface);
}

.tours-wrapper {
  position: relative;
}

/* Mobile swipe, Desktop grid configuration */
.tours-scroll-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

@media (max-width: 768px) {
  .tours-scroll-container {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 1.25rem;
    padding: 0.5rem 0.25rem 2rem 0.25rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .tours-scroll-container::-webkit-scrollbar {
    display: none;
  }
}

/* Tour Card Styling */
.tour-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s;
  position: relative;
}

@media (max-width: 768px) {
  .tour-card {
    flex: 0 0 88%;
    scroll-snap-align: start;
  }
}

.tour-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 173, 239, 0.3);
  box-shadow: 0 15px 35px -10px rgba(0, 173, 239, 0.15), 0 5px 15px rgba(0, 0, 0, 0.4);
}

.tour-img-wrapper {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background-color: #1a2638;
}

.tour-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.tour-card:hover .tour-img {
  transform: scale(1.05);
}

.tour-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: linear-gradient(135deg, var(--secondary), #d97706);
  color: var(--dark-bg);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  text-transform: uppercase;
  z-index: 5;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.tour-meta-badge {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  background: rgba(9, 15, 26, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--light-text);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.tour-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.tour-title {
  font-size: 1.2rem;
  line-height: 1.4;
  margin-bottom: 0.75rem;
  color: var(--light-text);
  font-weight: 700;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 3.3rem;
  transition: var(--transition-fast);
}

.tour-card:hover .tour-title {
  color: var(--primary);
}

.tour-highlights-preview {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted-text);
  flex-grow: 1;
}

.tour-highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  line-height: 1.35;
}

.tour-highlight-item svg {
  width: 0.85rem;
  height: 0.85rem;
  color: var(--primary);
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.tour-card-footer {
  display: flex;
  gap: 0.75rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.tour-card-btn {
  flex: 1;
  padding: 0.65rem 0.5rem;
  font-size: 0.8rem;
  border-radius: 50px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-outline-card {
  border: 1px solid var(--border-color);
  color: var(--light-text);
  background: rgba(255, 255, 255, 0.03);
}

.btn-outline-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
}

.btn-primary-card {
  background: linear-gradient(135deg, #ffb03b, #ff9f43);
  color: #050811;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary-card:hover {
  filter: brightness(1.15);
  box-shadow: 0 4px 12px var(--glow-gold);
}

/* Swipe Dots Indicators for Mobile */
.swipe-indicator {
  display: none;
  justify-content: center;
  gap: 0.5rem;
  margin-top: -0.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .swipe-indicator {
    display: flex;
  }
}

.swipe-dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transition: var(--transition-fast);
}

.swipe-dot.active {
  background: var(--primary);
  width: 1rem;
  border-radius: 10px;
}

/* B2B Land Tour Section */
.b2b-section {
  background: linear-gradient(135deg, #050811 0%, #0c1222 100%);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.b2b-section::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--glow-cyan) 0%, transparent 70%);
  pointer-events: none;
}

.b2b-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 992px) {
  .b2b-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.b2b-content h2 {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.b2b-highlight {
  color: var(--primary);
}

.b2b-desc {
  color: var(--muted-text);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.b2b-features-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.b2b-feature-item {
  display: flex;
  gap: 1rem;
}

.b2b-feature-icon {
  background: rgba(0, 173, 239, 0.1);
  color: var(--primary);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(0, 173, 239, 0.2);
}

.b2b-feature-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.b2b-feature-text h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.b2b-feature-text p {
  color: var(--muted-text);
  font-size: 0.9rem;
}

.b2b-form-wrapper {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 2.25rem;
  border-radius: 24px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.b2b-form-title {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.b2b-form-subtitle {
  color: var(--muted-text);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted-text);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--light-text);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--glow-cyan);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.btn-form-submit {
  width: 100%;
  background: linear-gradient(135deg, #ff4757, #ff6b81);
  color: #ffffff;
  font-weight: 700;
  border-radius: 8px;
  padding: 0.85rem;
  box-shadow: 0 4px 15px rgba(255, 71, 87, 0.4);
}

.btn-form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 71, 87, 0.6);
  background: linear-gradient(135deg, #ff5c6a, #ff7f93);
}

/* Destinations Gallery Section */
.gallery-section {
  background-color: var(--dark-bg);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 240px;
  gap: 1rem;
}

.gallery-item {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background-color: #1a2638;
  cursor: pointer;
}

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

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

.gallery-item-2x2 {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item-wide {
  grid-column: span 2;
}

.gallery-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(9, 15, 26, 0.95) 0%, rgba(9, 15, 26, 0.5) 70%, transparent 100%);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  z-index: 5;
}

.gallery-item:hover .gallery-info {
  opacity: 1;
  transform: translateY(0);
}

.gallery-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 0.2rem;
}

.gallery-desc {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
}

@media (max-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 200px;
  }
}

@media (max-width: 576px) {
  .gallery-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 1rem;
    padding-bottom: 1.5rem;
    scrollbar-width: none;
  }
  
  .gallery-grid::-webkit-scrollbar {
    display: none;
  }
  
  .gallery-item {
    flex: 0 0 75%;
    height: 300px;
    scroll-snap-align: start;
  }
  
  .gallery-info {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Why Choose Us Section */
.why-section {
  background-color: var(--dark-surface);
  border-top: 1px solid var(--border-color);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 992px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .why-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

.why-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 2.25rem 2rem;
  border-radius: 20px;
  transition: transform 0.3s var(--transition-medium), border-color 0.3s;
}

.why-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 10px 25px rgba(0, 173, 239, 0.1);
}

.why-icon {
  background: rgba(0, 173, 239, 0.08);
  border: 1px solid rgba(0, 173, 239, 0.15);
  color: var(--primary);
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.why-icon svg {
  width: 1.75rem;
  height: 1.75rem;
}

.why-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.why-card-desc {
  color: var(--muted-text);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Footer Section */
.footer {
  background-color: #070b16;
  border-top: 1px solid var(--border-color);
  padding: 4.5rem 0 2rem 0;
  font-size: 0.9rem;
  color: var(--muted-text);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3.5rem;
}

@media (max-width: 992px) {
  .footer-top {
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
  }
}

.footer-logo-wrapper {
  margin-bottom: 1.25rem;
}

.footer-logo {
  height: 3.25rem;
  width: auto;
  object-fit: contain;
}

.footer-company-desc {
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-contact-item {
  display: flex;
  gap: 0.75rem;
}

.footer-contact-item svg {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.footer-contact-item span {
  line-height: 1.4;
}

.footer-title {
  color: var(--light-text);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2.5rem;
  height: 2px;
  background-color: var(--primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-link-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-link-item svg {
  width: 0.8rem;
  height: 0.8rem;
  color: var(--muted-text);
  transition: var(--transition-fast);
}

.footer-link-item:hover svg {
  color: var(--primary);
  transform: translateX(3px);
}

.footer-link-item:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

@media (max-width: 576px) {
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding-bottom: 5.5rem; /* Space for sticky CTA on mobile */
  }
}

/* Dynamic Itinerary Drawer & Backdrop */
.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(9, 14, 26, 0.7);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.drawer-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.itinerary-drawer {
  position: fixed;
  top: 0;
  right: -500px;
  width: 500px;
  height: 100%;
  background: var(--dark-surface);
  border-left: 1px solid var(--border-color);
  z-index: 1001;
  box-shadow: -15px 0 35px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  transition: right var(--transition-medium);
}

.itinerary-drawer.open {
  right: 0;
}

@media (max-width: 768px) {
  .itinerary-drawer {
    width: 100%;
    height: 88%;
    top: auto;
    bottom: -88%;
    right: 0;
    border-left: none;
    border-top: 1px solid var(--border-color);
    border-radius: 24px 24px 0 0;
    transition: bottom var(--transition-medium);
  }
  
  .itinerary-drawer.open {
    bottom: 0;
  }
}

.drawer-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.02);
}

.drawer-title-area {
  max-width: 80%;
}

.drawer-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--light-text);
  line-height: 1.3;
  margin-bottom: 0.25rem;
}

.drawer-subtitle {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}

.drawer-close-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--light-text);
  transition: var(--transition-fast);
}

.drawer-close-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--secondary);
}

.drawer-close-btn svg {
  width: 1.1rem;
  height: 1.1rem;
}

.drawer-content {
  flex-grow: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.drawer-highlights {
  background: rgba(0, 173, 239, 0.05);
  border: 1px solid rgba(0, 173, 239, 0.1);
  padding: 1.25rem;
  border-radius: 16px;
  margin-bottom: 1.5rem;
}

.drawer-highlights-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.drawer-highlights-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted-text);
}

.drawer-highlights-item {
  display: flex;
  gap: 0.5rem;
  line-height: 1.4;
}

.drawer-highlights-item svg {
  width: 0.9rem;
  height: 0.9rem;
  color: var(--secondary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.drawer-itinerary-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  border-left: 3px solid var(--primary);
  padding-left: 0.6rem;
}

/* Accordion Styling */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion-item {
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition-fast);
}

.accordion-item.active {
  border-color: rgba(0, 173, 239, 0.25);
  background: rgba(0, 173, 239, 0.01);
}

.accordion-header {
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.accordion-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.accordion-title-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.accordion-day {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--secondary);
  text-transform: uppercase;
}

.accordion-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--light-text);
  line-height: 1.3;
}

.accordion-icon-box {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted-text);
  transition: transform 0.3s;
}

.accordion-item.active .accordion-icon-box {
  transform: rotate(180deg);
  background: rgba(0, 173, 239, 0.1);
  color: var(--primary);
}

.accordion-icon-box svg {
  width: 0.8rem;
  height: 0.8rem;
}

/* Accordion Grid Animating Height style */
.accordion-content-wrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease-out;
}

.accordion-item.active .accordion-content-wrapper {
  grid-template-rows: 1fr;
}

.accordion-content {
  overflow: hidden;
}

.accordion-inner {
  padding: 0 1.25rem 1.25rem 1.25rem;
  font-size: 0.85rem;
  color: var(--muted-text);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding-top: 1rem;
}

.itinerary-activity-item {
  display: flex;
  gap: 0.6rem;
  line-height: 1.45;
}

.drawer-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: rgba(9, 14, 26, 0.95);
  display: flex;
  gap: 0.75rem;
}

.drawer-footer .btn {
  flex: 1;
  padding: 0.75rem;
  font-size: 0.85rem;
}

/* Floating / Sticky Mobile CTA Bar */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(9, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--glass-border);
  padding: 0.75rem 1.25rem;
  z-index: 99;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.6);
}

@media (max-width: 768px) {
  .mobile-sticky-cta {
    display: flex;
    gap: 0.75rem;
  }
}

.cta-mobile-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.btn-mobile-call {
  background: linear-gradient(135deg, #10b981, #059669); /* Green call */
  color: white;
}

.btn-mobile-zalo {
  background: linear-gradient(135deg, #0068ff, #0056d6); /* Zalo Blue */
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-mobile-itinerary {
  background: linear-gradient(135deg, #ffb03b, #ff9f43);
  color: #050811;
}

/* Pulsing effect for buttons */
@keyframes pulse-cyan {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 173, 239, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 173, 239, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 173, 239, 0);
  }
}

.pulse-animation {
  animation: pulse-cyan 2s infinite;
}

/* Activity Inline Vector Icons */
.act-icon {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
  transition: var(--transition-fast);
}

.itinerary-activity-item:hover .act-icon {
  color: var(--secondary);
  transform: scale(1.15);
}

/* App-like Splash Screen */
.splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--dark-bg);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.8s;
}

.splash-screen.fade-out {
  opacity: 0;
  visibility: hidden;
}

.splash-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  max-width: 90%;
}

.splash-logo {
  height: 5.5rem;
  width: auto;
  object-fit: contain;
  animation: splash-zoom 2s infinite ease-in-out;
}

.splash-loader {
  width: 150px;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.splash-loader::after {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  animation: loading-bar 1.5s infinite ease-in-out;
}

.splash-text {
  font-family: var(--font-heading);
  color: var(--secondary);
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  font-weight: 600;
  text-transform: uppercase;
}

@keyframes splash-zoom {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 10px rgba(0, 173, 239, 0)); }
  50% { transform: scale(1.04); filter: drop-shadow(0 0 15px var(--glow-cyan)); }
}

@keyframes loading-bar {
  0% { left: -50%; }
  100% { left: 100%; }
}

/* Scroll Entrance Animations */
.reveal-element {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-element.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Delay modifiers for sequential item entrance (e.g. grids) */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Chinese Pattern Backgrounds */
.chinese-pattern {
  position: relative;
}
.chinese-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M0 0h20v20H0V0zm2 2v16h16V2H2zm4 4h8v8H6V6zm2 2v4h4V8H8zm12-8h20v20H20V0zm2 2v16h16V2H22zm4 4h8v8h-8V6zm2 2v4h4V8h-4zM0 20h20v20H0V20zm2 2v16h16V22H2zm4 4h8v8H6v-8zm2 2v4h4v-4H8zm12-8h20v20H20V20zm2 2v16h16V22H22zm4 4h8v8h-8v-8zm2 2v4h4v-4h-4z' fill='%23ffffff' fill-opacity='0.02'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1;
}
.chinese-pattern > .container {
  position: relative;
  z-index: 2;
}

/* Redesign Section Titles with traditional Chinese brackets */
.section-title {
  position: relative;
}
.section-title::before, .section-title::after {
  content: ' ';
  display: inline-block;
  width: 10px;
  height: 1.5rem;
  border-color: var(--secondary);
  border-style: solid;
  margin: 0 10px;
  vertical-align: middle;
}
.section-title::before {
  border-width: 2px 0 2px 2px;
}
.section-title::after {
  border-width: 2px 2px 2px 0;
}

/* Mobile Scroll Padding and Mask Overlays */
@media (max-width: 768px) {
  .tours-scroll-container::after, .gallery-grid::after {
    content: '';
    display: block;
    flex: 0 0 1.25rem; /* Spacer to fix right margin in flex scroll tracks */
    width: 1.25rem;
    height: 1px;
  }

  .tours-wrapper, .gallery-section {
    position: relative;
  }
  
  .tours-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 45px;
    height: 100%;
    background: linear-gradient(to left, var(--dark-surface), transparent);
    pointer-events: none;
    z-index: 5;
  }
}

/* Vertical Timeline Styling inside Drawer */
.itinerary-timeline {
  position: relative;
  padding-left: 2rem;
  margin-top: 1.5rem;
}

.itinerary-timeline::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 7px;
  width: 2px;
  height: calc(100% - 24px);
  border-left: 2px dashed rgba(255, 176, 59, 0.25);
  z-index: 1;
}

.timeline-item {
  position: relative;
  margin-bottom: 1.75rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-node {
  position: absolute;
  top: 10px;
  left: -2rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--dark-surface);
  border: 3px solid var(--secondary); /* Imperial Gold */
  z-index: 2;
  box-shadow: 0 0 8px rgba(255, 176, 59, 0.4);
  transition: var(--transition-fast);
}

.timeline-item.active .timeline-node {
  background: var(--secondary);
  box-shadow: 0 0 15px var(--secondary);
}

.timeline-header {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: var(--transition-fast);
}

.timeline-item.active .timeline-header {
  border-color: rgba(255, 176, 59, 0.25);
  background: rgba(255, 176, 59, 0.02);
}

.timeline-header:hover {
  background: rgba(255, 255, 255, 0.04);
}

.timeline-day-badge {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--secondary);
  text-transform: uppercase;
  margin-bottom: 0.15rem;
  display: block;
  letter-spacing: 0.05em;
}

.timeline-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--light-text);
  line-height: 1.35;
}

.timeline-toggle-icon {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.03);
  color: var(--muted-text);
  transition: transform 0.3s;
}

.timeline-item.active .timeline-toggle-icon {
  transform: rotate(180deg);
  background: rgba(255, 176, 59, 0.1);
  color: var(--secondary);
}

.timeline-content-wrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease-out;
}

.timeline-item.active .timeline-content-wrapper {
  grid-template-rows: 1fr;
}

.timeline-content {
  overflow: hidden;
}

.timeline-inner {
  padding: 1.25rem;
  margin-left: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  border-left: 2px solid rgba(0, 0, 0, 0.05);
  background: rgba(0, 0, 0, 0.015);
  border-radius: 0 0 12px 12px;
}