@import url("https://fonts.googleapis.com/css2?family=Playfair+Display:wght@700&family=Inter:wght@400;500;600;700&display=swap");

:root {
  --primary: #0f172a;
  /* Deep Blue */
  --primary-light: #1e293b;
  --accent: #d4af37;
  /* Metallic Gold */
  --accent-hover: #b8860b;
  /* Dark Goldenrod */
  --gold-gradient: linear-gradient(135deg, #ffd700 0%, #b8860b 100%);
  --primary-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --success: #22c55e;
  /* Green */
  --text-dark: #0f172a;
  --text-gray: #475569;
  --text-light: #f8fafc;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg:
    0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 0.5rem;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

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

/* Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gold-gradient);
  color: #1e293b;
  /* Dark text for contrast on gold */
  box-shadow: 0 4px 14px 0 rgba(184, 134, 11, 0.39);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(184, 134, 11, 0.23);
}

.btn-success {
  background-color: var(--success);
  color: white;
}

.btn-success:hover {
  background-color: #16a34a;
  transform: translateY(-2px);
}

.btn-outline {
  border: 2px solid white;
  background: transparent;
  color: white;
}

.btn-outline:hover {
  background: white;
  color: var(--primary);
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-weight: 800;
}

.section-title p {
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  padding: 0.75rem 0;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: -0.5px;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo span {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.hotline-top {
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Hero Section */
.hero {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.9)),
    url("https://images.unsplash.com/photo-1503387762-592deb58ef4e?w=1920");
  background-size: cover;
  background-position: center;
  color: white;
  padding: 8rem 0 6rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: #cbd5e1;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.btn-lg .btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-left: 0.5rem;
}

.btn-lg .btn-label {
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-lg .btn-sublabel {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.95;
  margin-top: 0.15rem;
}

.hero-secondary-cta {
  margin-top: 1rem;
}

.btn-link {
  color: white;
  text-decoration: none;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.1);
}

.btn-link:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(5px);
}

.btn-link i {
  color: var(--success);
}

/* Intro Section */
.intro {
  padding: 5rem 0;
  background: white;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  text-align: center;
}

.intro-item {
  padding: 2rem;
  background: var(--bg-light);
  border-radius: var(--radius);
  transition: transform 0.3s ease;
}

.intro-item:hover {
  transform: translateY(-5px);
}

.intro-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.intro-item h3 {
  margin-bottom: 0.5rem;
  color: var(--primary);
}

/* Services */
.services {
  padding: 5rem 0;
  background: var(--bg-light);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border: 1px solid transparent;
  text-align: center;
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.5rem;
}

.service-card h3 {
  margin-bottom: 1rem;
  color: var(--primary);
}

.service-card p {
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.service-cta {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* Enhanced Pricing Section */
.pricing-subtitle {
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 0.5rem;
}

.price-table th {
  background: var(--primary);
  color: white;
  padding: 1rem;
}

.price-table td.price-highlight {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
}

.pricing-notes {
  background: #f8fafc;
  padding: 2rem;
  border-radius: var(--radius);
  margin-top: 2rem;
  border-left: 4px solid var(--success);
}

.pricing-notes h3 {
  color: var(--primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-notes ul {
  list-style: none;
  padding: 0;
}

.pricing-notes li {
  padding: 0.75rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border-bottom: 1px solid #e2e8f0;
}

.pricing-notes li:last-child {
  border-bottom: none;
}

.pricing-notes li i {
  color: var(--success);
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.pricing-cta {
  margin-top: 2rem;
  text-align: center;
  padding-top: 2rem;
  border-top: 2px dashed var(--accent);
}

.pricing-incentive {
  background: linear-gradient(135deg, var(--accent), #f97316);
  color: white;
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.05rem;
}

.pricing-incentive i {
  font-size: 1.5rem;
}

/* Process - Timeline */
.process {
  padding: 3rem 0;
  background: white;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: "";
  position: absolute;
  width: 4px;
  background-color: var(--bg-light);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -2px;
}

.timeline-item {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 50%;
}

.timeline-item::after {
  content: attr(data-step);
  position: absolute;
  width: 40px;
  height: 40px;
  right: -20px;
  background-color: white;
  border: 4px solid var(--accent);
  top: 15px;
  border-radius: 50%;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--primary);
}

.left {
  left: 0;
}

.right {
  left: 50%;
}

.left::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  right: 30px;
  border: medium solid white;
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent white;
}

.right::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  left: 30px;
  border: medium solid white;
  border-width: 10px 10px 10px 0;
  border-color: transparent white transparent transparent;
}

.right::after {
  left: -20px;
}

.timeline-content {
  padding: 20px 30px;
  background-color: white;
  position: relative;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--bg-light);
}

/* Gallery */
.gallery {
  padding: 5rem 0;
  background: var(--bg-light);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

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

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  padding: 2rem 1rem 1rem;
  color: white;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
  transform: translateY(0);
}

/* Why Choose Us */
.why-us {
  padding: 5rem 0;
  background: var(--primary);
  color: white;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.why-item {
  text-align: center;
}

.why-item h4 {
  margin: 1rem 0 0.5rem;
  font-size: 1.2rem;
  color: var(--accent);
}

/* Pricing */
.pricing {
  padding: 5rem 0;
  background: white;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  box-shadow: var(--shadow-md);
  border-radius: var(--radius);
  overflow: hidden;
}

.price-table th,
.price-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--bg-light);
}

.price-table th {
  background-color: var(--primary);
  color: white;
}

.price-note {
  margin-top: 1rem;
  color: var(--accent);
  font-style: italic;
  font-size: 0.9rem;
  display: block;
  text-align: center;
}

/* FAQ */
.faq {
  padding: 5rem 0;
  background: var(--bg-light);
}

.faq-item {
  background: white;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.faq-item h3 {
  margin-bottom: 0.5rem;
  color: var(--primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Contact Form */
.contact-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--primary) 0%, #1e1b4b 100%);
  color: white;
}

.form-container {
  background: white;
  padding: 2.5rem;
  border-radius: var(--radius);
  color: var(--text-dark);
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* Mobile Bottom Bar */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: 0.75rem;
  justify-content: space-around;
  gap: 1rem;
}

.mobile-bottom-bar .btn {
  flex: 1;
  padding: 0.5rem;
  font-size: 0.9rem;
}

/* Promotional Banner */
.promo-banner {
  background: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
  color: white;
  padding: 0.75rem 0;
  text-align: center;
  position: relative;
  z-index: 999;
  animation: slideDown 0.5s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.promo-banner strong {
  font-weight: 700;
}

#promoTimer {
  background: rgba(255, 255, 255, 0.2);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 700;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }

  to {
    transform: translateY(0);
  }
}

/* Social Proof Bar */
.social-proof-bar {
  background: var(--bg-light);
  border-bottom: 1px solid #e2e8f0;
  padding: 1rem 0;
}

.proof-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-gray);
  font-size: 0.9rem;
}

.stat-item i {
  color: var(--accent);
  font-size: 1.1rem;
}

.stat-item strong {
  color: var(--primary);
  font-size: 1.1rem;
}

/* Video Section */
.video-section {
  padding: 3rem 0;
  background: var(--bg-light);
}

.video-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.video-placeholder {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease;
  height: 500px;
}

.video-placeholder:hover {
  transform: scale(1.02);
}

.video-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(249, 115, 22, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  transition: all 0.3s ease;
}

.video-placeholder:hover .play-button {
  background: var(--accent-hover);
  transform: translate(-50%, -50%) scale(1.1);
}

.video-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2500;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-modal-content {
  position: relative;
  width: 90%;
  max-width: 1200px;
  aspect-ratio: 16/9;
}

.close-video {
  position: absolute;
  top: -40px;
  right: 0;
  color: white;
  font-size: 3rem;
  cursor: pointer;
  z-index: 2501;
}

.close-video:hover {
  color: var(--accent);
}

/* Floating Contacts Container */
.floating-contacts {
  position: fixed;
  bottom: 100px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 999;
}

/* WhatsApp Button */
.whatsapp-float {
  width: 60px;
  height: 60px;
  background: #25d366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: all 0.3s ease;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

/* Success Modal */
.success-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.95);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.success-modal-content {
  background: white;
  border-radius: var(--radius);
  padding: 3rem 2rem;
  max-width: 500px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUpModal 0.4s ease;
}

@keyframes slideUpModal {
  from {
    opacity: 0;
    transform: translateY(50px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.success-icon {
  font-size: 5rem;
  color: var(--success);
  margin-bottom: 1.5rem;
  animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
  from {
    transform: scale(0);
  }

  to {
    transform: scale(1);
  }
}

.success-modal-content h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-size: 1.75rem;
}

.success-modal-content>p {
  color: var(--text-gray);
  margin-bottom: 2rem;
}

.success-steps {
  text-align: left;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: var(--radius);
}

.success-steps .step {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
}

.success-steps .step:not(:last-child) {
  border-bottom: 1px solid #e2e8f0;
}

.success-steps .step i {
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.success-steps .step span {
  color: var(--text-gray);
  line-height: 1.6;
}

.success-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.success-actions .btn {
  flex: 1;
  min-width: 150px;
}

/* Button Loading State */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border: 3px solid;
  border-radius: 50%;
  border-color: white white white transparent;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Testimonials */
.testimonials {
  padding: 5rem 0;
  background: white;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border-left: 4px solid var(--accent);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.testimonial-card .stars {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.testimonial-card p {
  color: var(--text-gray);
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.testimonial-card .author {
  color: var(--primary);
}

.testimonial-card .author strong {
  font-weight: 700;
}

.testimonial-card .author small {
  color: var(--text-gray);
}

/* Floating Zalo Button */
.zalo-float {
  position: fixed;
  bottom: 100px;
  right: 20px;
  width: 60px;
  height: 60px;
  background: #0068ff;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 4px 12px rgba(0, 104, 255, 0.4);
  z-index: 999;
  transition: all 0.3s ease;
  text-decoration: none;
}

.zalo-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 104, 255, 0.6);
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 998;
}

.scroll-top.show {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
}

/* Media Queries */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .timeline::after {
    left: 31px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }

  .timeline-item::after {
    left: 11px;
    /* adjusts circle position */
    right: auto;
  }

  .left::before,
  .right::before {
    left: 60px;
    /* arrow */
    border: medium solid white;
    border-width: 10px 10px 10px 0;
    border-color: transparent white transparent transparent;
  }

  .right {
    left: 0%;
  }

  .header-actions {
    display: none;
    /* Hide on mobile to show hamburger or just simple */
  }

  .mobile-bottom-bar {
    display: flex;
  }

  .contact-section {
    padding-bottom: 6rem;
    /* Space for bottom bar */
  }

  /* Mobile UX improvements */
  .btn {
    padding: 0.75rem 1.25rem;
    /* Larger touch target */
    font-size: 1rem;
  }

  .form-control {
    padding: 0.85rem;
    /* Larger touch target */
    font-size: 1rem;
  }

  .faq-item h3 {
    font-size: 1.1rem;
    /* Ensure readability */
    padding: 0.75rem 0;
    /* Larger touch target for the whole header */
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(0);
    opacity: 1;
  }

  to {
    transform: translateY(-100%);
    opacity: 0;
  }
}

/* Survey Booking Section */
.survey-booking {
  padding: 5rem 0;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.survey-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.survey-benefits {
  background: white;
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.survey-benefits h3 {
  color: var(--primary);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.survey-benefits h3 i {
  color: var(--accent);
}

.benefit-list {
  list-style: none;
  padding: 0;
}

.benefit-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #e2e8f0;
}

.benefit-list li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.benefit-list i {
  color: var(--success);
  font-size: 1.25rem;
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.benefit-list span {
  line-height: 1.6;
  color: var(--text-gray);
}

.survey-form-container {
  background: white;
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.survey-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
  font-size: 1.1rem;
  padding: 1rem;
  margin-top: 0.5rem;
}

.form-note {
  text-align: center;
  color: var(--text-gray);
  font-size: 0.9rem;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.form-note i {
  color: var(--success);
}

.text-accent {
  color: var(--accent);
}

/* Responsive Survey Section */
@media (max-width: 768px) {
  .survey-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .survey-form .form-row {
    grid-template-columns: 1fr;
  }

  .survey-benefits,
  .survey-form-container {
    padding: 1.5rem;
  }
}

/* Enhanced Footer */
.footer {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  padding: 4rem 0 2rem;
  color: white;
  border-top: 3px solid var(--accent);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 2fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  color: var(--accent);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.footer-section h4 {
  color: var(--accent);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-tagline {
  color: var(--success);
  font-style: italic;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-description {
  color: #cbd5e1;
  line-height: 1.6;
}

.footer-contact {
  list-style: none;
  padding: 0;
}

.footer-contact li {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.footer-contact i {
  color: var(--accent);
  font-size: 1.2rem;
  margin-top: 0.25rem;
  flex-shrink: 0;
}

.footer-contact strong {
  color: white;
}

.footer-contact a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-contact a:hover {
  color: var(--accent);
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 0.5rem;
}

.footer-links a::before {
  content: "▸";
  margin-right: 0.5rem;
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 2rem;
  text-align: center;
  color: #64748b;
}

.footer-disclaimer {
  font-size: 0.85rem;
  margin-top: 0.5rem;
  font-style: italic;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ============================================    MODERN UX/UI ARCHITECTURE    Date: 02/02/2026    Lead: UX/UI + Trust Architect    ============================================ */
/* Enhanced Design Tokens */
:root {
  /* Extended Gray Palette */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-600: #475569;
  --gray-700: #334155;
  /* Shadow System */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.07);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);
}

/* ============================================    MODERN HEADER    ============================================ */
.header-modern {
  background: white;
  padding: 1rem 0;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.header-modern .header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Modern Logo */
.logo-modern {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: transform 0.2s;
}

.logo-modern:hover {
  transform: translateY(-2px);
}

.logo-icon {
  font-size: 2.5rem;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.logo-tagline {
  font-size: 0.8rem;
  color: var(--gray-600);
  font-weight: 500;
  letter-spacing: 0.025em;
}

/* Header Right Section */
.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Trust Badge in Header */
.header-trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--success) 0%, #10b981 100%);
  color: white;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.header-trust-badge i {
  font-size: 1rem;
}

/* Modern Hotline */
.hotline-modern {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  padding: 0.75rem 1.25rem;
  background: var(--gray-50);
  border-radius: var(--radius);
  border: 2px solid var(--gray-200);
  transition: all 0.3s;
}

.hotline-modern:hover {
  border-color: var(--primary);
  background: white;
  box-shadow: var(--shadow-md);
}

.hotline-modern i {
  font-size: 1.5rem;
  color: var(--accent);
}

.hotline-text {
  display: flex;
  flex-direction: column;
}

.hotline-label {
  font-size: 0.75rem;
  color: var(--gray-600);
  font-weight: 500;
}

.hotline-number {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary);
}

/* ============================================    MODERN HERO SECTION    ============================================ */
.hero-modern {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.88)),
    url("https://images.unsplash.com/photo-1503387762-592deb58ef4e?w=1920");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: white;
  padding: 7rem 0 5rem;
  text-align: center;
}

.hero-main {
  margin-bottom: 3rem;
}

.hero-modern h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

/* USP Bullets */
.hero-usps {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
  color: #cbd5e1;
}

.usp-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.usp-item i {
  color: var(--success);
  font-size: 1.1rem;
}

.usp-separator {
  color: var(--accent);
  font-weight: 700;
  opacity: 0.5;
}

/* Trust Badges Bar */
.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.05);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.trust-badge-item i {
  font-size: 2rem;
  color: var(--accent);
}

.trust-badge-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.trust-badge-text strong {
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
}

.trust-badge-text span {
  font-size: 0.85rem;
  color: #cbd5e1;
  font-weight: 500;
}

/* ============================================    RESPONSIVE - MOBILE FIRST    ============================================ */
@media (max-width: 968px) {

  /* Header Mobile */
  .header-trust-badge {
    display: none;
  }

  .header-right {
    gap: 0.75rem;
  }

  .hotline-modern {
    padding: 0.5rem 0.75rem;
  }

  .hotline-text {
    display: none;
  }

  .hotline-modern i {
    font-size: 1.25rem;
    margin: 0;
  }

  .logo-icon {
    font-size: 2rem;
  }

  .logo-brand {
    font-size: 1.25rem;
  }

  .logo-tagline {
    font-size: 0.7rem;
  }
}

@media (max-width: 768px) {

  /* Hero Mobile */
  .hero-modern {
    padding: 5rem 0 4rem;
  }

  .hero-modern h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
  }

  .hero-usps {
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
    font-size: 0.95rem;
  }

  .usp-separator {
    display: none;
  }

  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 1.5rem;
  }

  .trust-badge-item i {
    font-size: 1.5rem;
  }

  .trust-badge-text strong {
    font-size: 1.25rem;
  }

  .trust-badge-text span {
    font-size: 0.75rem;
  }
}

/* ============================================    ACCESSIBILITY & PERFORMANCE    ============================================ */
/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

  .header-modern,
  .logo-modern,
  .hotline-modern {
    transition: none;
  }

  .hero-modern {
    background-attachment: scroll;
  }
}

/* Print styles */
@media print {

  .header-modern,
  .promo-banner,
  .mobile-bottom-bar {
    display: none;
  }
}

/* ============================================    CRO OPTIMIZATIONS    Conversion Rate Optimization + Mobile UX    Date: 02/02/2026    ============================================ */
/* Optional Label Styling */
.optional-label {
  font-size: 0.85em;
  font-weight: 400;
  color: var(--gray-600);
  font-style: italic;
}

/* Enhanced Mobile Bottom Bar */
.mobile-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.15);
  display: none;
  z-index: 999;
  padding: 0.75rem;
  gap: 0.5rem;
}

@media (max-width: 768px) {
  .mobile-bottom-bar {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* Primary CTA in Mobile Bar (Call) */
.mobile-bottom-bar .btn:first-child {
  font-weight: 700;
  font-size: 1rem;
  padding: 0.875rem 1rem;
  box-shadow: var(--shadow-md);
}

.mobile-bottom-bar .btn:first-child i {
  font-size: 1.2rem;
  animation: pulse-phone 2s ease-in-out infinite;
}

@keyframes pulse-phone {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.1);
  }
}

/* Secondary CTAs in Mobile Bar */
.mobile-bottom-bar .btn:not(:first-child) {
  padding: 0.75rem 0.5rem;
  font-size: 0.9rem;
}

/* Touch Target Assurance */
.mobile-bottom-bar .btn {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Service CTA Icons */
.service-cta i {
  transition: transform 0.3s ease;
}

.service-cta:hover i {
  transform: translateX(4px);
}

/* Form Button Improvements */
.btn-primary[type="submit"],
.btn-primary.btn-block {
  min-height: 52px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  transition: all 0.3s ease;
}

.btn-primary[type="submit"]:hover,
.btn-primary.btn-block:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary[type="submit"]:active,
.btn-primary.btn-block:active {
  transform: translateY(0);
}

/* Loading State for Forms */
.btn-primary[type="submit"].loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-primary[type="submit"].loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 3px solid white;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Floating Contacts Spacing Fix */
.floating-contacts {
  position: fixed;
  bottom: 80px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 998;
}

.whatsapp-float,
.zalo-float {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.75rem;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
}

.whatsapp-float {
  background: #25d366;
}

.zalo-float {
  background: #0068ff;
}

.whatsapp-float:hover,
.zalo-float:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

/* Scroll to Top Positioning */
.scroll-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 997;
}

.scroll-top.show {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Mobile: Adjust floating elements */
@media (max-width: 768px) {
  .floating-contacts {
    bottom: 140px;
    right: 15px;
  }

  .whatsapp-float,
  .zalo-float {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .scroll-top {
    bottom: 80px;
    right: 15px;
    width: 44px;
    height: 44px;
  }
}

/* Success Modal Improvements */
.success-modal-content {
  animation: modal-pop 0.3s ease-out;
}

@keyframes modal-pop {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Form Input Focus States */
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  outline: none;
}

/* Accessibility: Focus Visible */
.btn:focus-visible,
.service-cta:focus-visible,
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }

  .optional-label {
    color: var(--text);
  }
}

/* Performance: Reduce Animations on Low-End Devices */
@media (prefers-reduced-motion: reduce) {
  .mobile-bottom-bar .btn:first-child i {
    animation: none;
  }

  .service-cta i,
  .btn-primary[type="submit"],
  .whatsapp-float,
  .zalo-float,
  .scroll-top {
    transition: none;
  }
}

/* Utility Classes to replace Inline Styles */
.promo-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.promo-close-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1.5rem;
}

.text-white {
  color: white !important;
}

.text-light-gray {
  color: #cbd5e1 !important;
}

.why-icon {
  color: var(--accent);
  margin-bottom: 1rem;
}

.faq-answer {
  display: none;
  margin-top: 1rem;
}

.btn-full-width {
  width: 100%;
  border: none;
}

.btn-zalo-mobile {
  background: #0068ff;
  color: white;
}

/* Lightbox Styles */
.lightbox-overlay {
  display: none;
  position: fixed;
  z-index: 2000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  justify-content: center;
  align-items: center;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: white;
  font-size: 3rem;
  cursor: pointer;
}

.lightbox-image {
  max-width: 90%;
  max-height: 80vh;
  border: 2px solid white;
}

.hidden {
  display: none;
}

.pricing-table-wrapper {
  overflow-x: auto;
}

.text-accent {
  color: var(--accent);
}

.logo-icon {
  color: var(--primary);
}

/* Detail Pages Styles & Backgrounds */
.page-header {
  background-size: cover;
  background-position: center;
  padding: 6rem 0;
  text-align: center;
  color: white;
  margin-bottom: 3rem;
  position: relative;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1;
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.bg-hero {
  background-image: url("https://plus.unsplash.com/premium_photo-1682145181754-019685db5774?q=80&w=1200&auto=format&fit=crop");
}

.bg-project1 {
  background-image: url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?q=80&w=1200&auto=format&fit=crop");
}

.bg-project2 {
  background-image: url("https://images.unsplash.com/photo-1512917774080-9991f1c4c750?q=80&w=1200&auto=format&fit=crop");
}

/* PREMIUM GOLD THEME EXTENSIONS */
/* Gold Underline for Section Titles */
.section-title h2 {
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gold-gradient);
  margin: 10px auto 0;
  border-radius: 2px;
}

/* Premium Pricing Table */
.price-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.price-table thead th {
  background: var(--primary-gradient);
  color: #d4af37;
  /* Gold Text on Dark Header */
  padding: 1rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-bottom: 2px solid #d4af37;
}

.price-table tbody tr:nth-child(even) {
  background-color: var(--gray-50);
}

.price-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--gray-200);
}

.price-highlight {
  color: #b8860b;
  font-weight: 700;
}

/* Pricing Header */
.pricing-header,
.pricing-header-secondary {
  color: var(--primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  border-left: 4px solid #d4af37;
  padding-left: 1rem;
}

/* Hero Text Gold Accent */
.hero-modern h1 {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* Scrollbar Gold */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #1e293b;
}

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-hover);
}

/* LUXURY FONTS OVERRIDE */
.section-title h2,
.hero-modern h1,
.pricing-header,
.pricing-header-secondary,
.page-header h1,
h2,
h3 {
  font-family: "Playfair Display", serif;
  letter-spacing: -0.5px;
}

/* Add a subtle gold glow to hero text */
.hero-modern h1 {
  color: #ffffff;
  text-shadow:
    0 4px 6px rgba(0, 0, 0, 0.6),
    0 0 20px rgba(212, 175, 55, 0.3);
}

/* Make body background off-white for warmth */
body {
  background-color: #fafaf9;
  /* Stone 50 - Very Subtle Warmth */
}