:root {
  --navy: #123A63;
  --orange: #F47B20;
  --orange-hover: #d6691c;
  --dark-gray: #2B2B2B;
  --light-gray: #F3F5F7;
  --border-gray: #DDE2E7;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--dark-gray);
  overflow-x: hidden;
}

/* Global Button Refinement */
.btn {
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.125rem;
}

/* Navbar Custom */
.nav-link {
  color: var(--navy) !important;
  font-weight: 500;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--orange) !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--orange);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

.nav-link.active {
  color: var(--orange) !important;
}

.nav-link.active::after {
  width: 80%;
}

h1, h2, h3, h4, h5, h6, .heading-font {
  font-family: 'Be Vietnam Pro', sans-serif;
  color: var(--navy);
}

/* Section Spacing */
.section-padding {
  padding-top: 90px;
  padding-bottom: 90px;
}

@media (max-width: 768px) {
  .section-padding {
    padding-top: 60px;
    padding-bottom: 60px;
  }
}

/* Custom Colors */
.text-navy {
  color: var(--navy) !important;
}

.bg-navy {
  background-color: var(--navy) !important;
}

/* Custom Primary Button */
.btn-primary {
  background-color: var(--orange);
  border-color: var(--orange);
  color: #fff;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background-color: var(--orange-hover) !important;
  border-color: var(--orange-hover) !important;
  color: #fff;
}

.btn-outline-primary {
  color: var(--orange);
  border-color: var(--orange);
  transition: all 0.3s ease;
}

.btn-outline-primary:hover, .btn-outline-primary:focus, .btn-outline-primary:active {
  background-color: var(--orange) !important;
  border-color: var(--orange) !important;
  color: #fff !important;
  box-shadow: 0 5px 15px rgba(244, 123, 32, 0.3);
}

.btn-outline-navy {
  color: var(--navy);
  border-color: var(--navy);
  transition: all 0.3s ease;
}

.btn-outline-navy:hover {
  background-color: var(--navy);
  border-color: var(--navy);
  color: #fff;
}

/* Hover Lift Effect */
.btn-hover-lift {
  transition: background-color 0.2s ease-in-out, border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}
.btn-hover-lift:hover {
  box-shadow: 0 4px 12px rgba(244, 123, 32, 0.3) !important;
}

/* Navbar Customization */
.navbar-nav .nav-link {
  color: var(--dark-gray);
  font-weight: 500;
  transition: color 0.2s ease-in-out;
}

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

.hero-banner {
  padding: 80px 0;
  background-color: var(--light-gray);
}

.hero-slider-item {
  height: 75vh;
  min-height: 550px;
  max-height: 800px;
}

.hero-image {
  object-fit: cover;
  min-height: 400px;
}

/* Utilities */
.bg-light-gray {
  background-color: var(--light-gray) !important;
}

.text-orange {
  color: var(--orange) !important;
}

.bg-orange {
  background-color: var(--orange) !important;
}

.bg-navy {
  background-color: var(--navy) !important;
}

.text-shadow {
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.bg-dark {
  background-color: var(--dark-gray) !important;
}

.min-h-200 { min-height: 200px; }
.min-h-300 { min-height: 300px; }
.min-h-400 { min-height: 400px; }

.bg-gradient-dark {
  background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0) 100%);
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Category Card */
.category-card {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid transparent;
}
.category-card:hover {
  border-color: var(--orange) !important;
  box-shadow: 0 10px 20px rgba(0,0,0,0.05) !important;
}
.category-img {
  transition: transform 0.4s ease;
}
.category-card:hover .category-img {
  transform: scale(1.05);
}

/* App Card (Ứng dụng) */
.app-card .app-img {
  transition: transform 0.5s ease;
}
.app-card:hover .app-img {
  transform: scale(1.1);
}
.app-overlay {
  opacity: 0.5;
  transition: opacity 0.3s ease;
}
.app-card:hover .app-overlay {
  opacity: 0.3;
}

/* About Section Revamp */
.about-image-wrapper {
  z-index: 1;
}

.main-img-hover {
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-img-hover:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12) !important;
}

.main-img-hover img {
  transition: transform 0.8s ease;
}

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

.rounded-tr-4 {
  border-top-right-radius: 2rem !important;
}

.ls-1 {
  letter-spacing: 1px;
}

/* Hotline Button V2 */
.btn-hotline-v2 {
  transition: all 0.3s ease;
}

.btn-hotline-v2:hover {
  background-color: var(--navy) !important;
  color: #fff !important;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(10, 40, 72, 0.2);
}

.hotline-icon-ring {
  display: inline-flex;
  animation: phone-ring 2s infinite;
}

@keyframes phone-ring {
  0% { transform: rotate(0) scale(1); }
  5% { transform: rotate(-15deg) scale(1.1); }
  10% { transform: rotate(15deg) scale(1.1); }
  15% { transform: rotate(-15deg) scale(1.1); }
  20% { transform: rotate(15deg) scale(1.1); }
  25% { transform: rotate(0) scale(1); }
  100% { transform: rotate(0) scale(1); }
}

/* Scroll Animation Simulation */
[data-aos="fade-up"] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.aos-animate [data-aos="fade-up"] {
  opacity: 1;
  transform: translateY(0);
}

/* Decorative floating */
.about-image-wrapper div[class*="opacity-10"] {
  animation: float-shapes 6s ease-in-out infinite;
}

@keyframes float-shapes {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(10px, -15px); }
}

/* Product & Blog Card */
.product-card, .blog-card {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04), 0 5px 15px rgba(0, 0, 0, 0.02);
  transition: all 0.4s ease;
  cursor: pointer;
  position: relative;
  background-color: #fff;
  border: 1px solid transparent !important;
}
.product-card .card-img-top, .blog-card .card-img-top {
  transition: transform 0.6s ease;
}
.product-card:hover .card-img-top, .blog-card:hover .card-img-top {
  transform: scale(1.05);
}
.product-card:hover, .blog-card:hover {
  border-color: var(--orange) !important;
  box-shadow: 0 20px 40px rgba(18, 58, 99, 0.08) !important;
}
.product-card .btn, .blog-card .btn {
  transition: all 0.3s ease;
}
.product-card:hover .btn-outline-primary {
  background-color: var(--orange);
  color: #fff;
}

/* Feature Card (Section 6) */
.feature-card {
  transition: all 0.4s ease;
  padding: 30px 15px;
  border-radius: 20px !important;
  border: 1px solid transparent !important;
}

.feature-card:hover {
  background-color: #fff !important;
  border-color: var(--orange) !important;
  box-shadow: 0 20px 40px rgba(0,0,0,0.06);
}

.feature-card .rounded-circle {
  transition: all 0.4s ease;
}

.feature-card:hover .rounded-circle {
  background-color: var(--orange) !important;
  transform: scale(1.15) rotate(8deg);
  box-shadow: 0 15px 30px rgba(244, 123, 32, 0.25);
}

.feature-card:hover .rounded-circle svg {
  stroke: #fff !important;
}

.feature-card h5 {
  transition: color 0.3s ease;
}

.feature-card:hover h5 {
  color: var(--orange) !important;
}

/* Stats Hover */
.stat-item {
  transition: all 0.4s ease;
  border-radius: 12px;
}

.stat-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.stat-item:hover h2 {
  transform: scale(1.05);
  transition: transform 0.4s ease;
}

/* General Transition for Links */
a {
  transition: all 0.3s ease;
}


/* Footer Hover Links & General Hover Links */
.text-hover-white:hover {
  color: #ffffff !important;
}
.text-hover-orange:hover {
  color: var(--orange) !important;
}
.text-hover-navy:hover {
  color: var(--navy) !important;
}

/* Swiper Customizations */
.swiper-pagination-bullet {
  background: #fff;
  opacity: 0.6;
}
.swiper-pagination-bullet-active {
  background: var(--orange) !important;
  opacity: 1;
}

.swiper-button-next, .swiper-button-prev {
  color: #fff !important;
  background: rgba(0, 0, 0, 0.4);
  width: 40px !important;
  height: 40px !important;
  border-radius: 50%;
  transition: background 0.3s ease, transform 0.2s ease, color 0.3s ease;
}

.swiper-button-next:hover, .swiper-button-prev:hover {
  background: #fff;
  color: var(--orange) !important;
  transform: scale(1.1);
}

.swiper-button-next:after, .swiper-button-prev:after {
  font-size: 16px !important;
  font-weight: bold;
}