/* Gov.Star 2025 Landing Page - CSS Styles */

/* Variables */
:root {
  --primary-color: #0066cc;
  --secondary-color: #00d084;
  --accent-color: #ffd700;
  --dark-color: #1a1a1a;
  --light-color: #f8f9fa;
  --text-color: #333;
  --gray-color: #6c757d;
  --white: #ffffff;
  --transition: all 0.3s ease;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

body {
  font-family: "Montserrat", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--white);
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
}
h2 {
  font-size: 2.5rem;
}
h3 {
  font-size: 1.75rem;
}

p {
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--secondary-color);
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Ensure images are visible by default */
img {
  opacity: 1;
  transition: opacity 0.5s ease;
}

.section {
  padding: 80px 0;
}

.bg-light {
  background-color: var(--light-color);
}

.img-fluid {
  max-width: 100%;
  height: auto;
}

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

.text-left {
  text-align: left;
}
.mt-4 {
  margin-top: 2rem;
}

.lead {
  font-size: 1.25rem;
  font-weight: 300;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
}

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

.btn-primary:hover {
  background-color: #0052a3;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
  background-color: #00b371;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

.btn-orange {
  background: linear-gradient(135deg, #ff6b35, #ff4500);
  color: var(--white);
  font-weight: 600;
  padding: 12px 30px;
  border-radius: 50px;
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-orange::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.btn-orange:hover::before {
  left: 100%;
}

.btn-orange:hover {
  background: linear-gradient(135deg, #ff4500, #ff6347);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(255, 107, 53, 0.4);
  color: var(--white);
}

.btn-orange i {
  margin-right: 0.5rem;
  transition: var(--transition);
}

.btn-orange:hover i {
  transform: scale(1.1);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.12);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 20px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
  padding: 0.5rem;
  border-radius: 15px;
  transition: all 0.3s ease;
}

.nav-brand::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70px;
  height: 70px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.4s ease;
  z-index: 0;
}

.nav-brand:hover::before {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.2);
}

.nav-brand::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  border: 1px solid var(--primary-color);
  border-radius: 50%;
  opacity: 0;
  animation: nav-pulse-ring 3s infinite;
}

.nav-brand:hover::after {
  opacity: 0.4;
}

@keyframes nav-pulse-ring {
  0% {
    transform: translate(-50%, -50%) scale(0.9);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.3);
    opacity: 0;
  }
}

.nav-brand .logo {
  height: 45px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

.nav-brand:hover .logo {
  transform: scale(1.1) translateY(-2px) rotate(2deg);
  filter: drop-shadow(0 8px 16px rgba(0, 102, 204, 0.3));
  box-shadow: 0 0 20px rgba(0, 102, 204, 0.2);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-brand::before {
    width: 50px;
    height: 50px;
  }
  
  .nav-brand::after {
    width: 40px;
    height: 40px;
  }
  
  .nav-brand .logo {
    height: 35px;
  }
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 25px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.nav-link i {
  font-size: 0.9rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
}

.nav-link:hover i,
.nav-link.active i {
  opacity: 1;
  transform: translateX(0);
}

.nav-link span {
  position: relative;
  z-index: 1;
}

.nav-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.3s ease;
  border-radius: 25px;
}

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 0.1;
  transform: scale(1);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.nav-link.active {
  background-color: rgba(0, 102, 204, 0.05);
}

.nav-cta {
  display: flex;
}

.btn-nav-primary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: var(--white);
  border-radius: 25px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.btn-nav-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 102, 204, 0.4);
  background: linear-gradient(135deg, #0052a3, #00b371);
}

.btn-nav-primary i {
  animation: rocket 2s ease-in-out infinite;
}

@keyframes rocket {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(3px);
  }
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 5px;
  position: relative;
  z-index: 1001;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background-color: var(--text-color);
  margin: 3px 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
  background-color: var(--primary-color);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
  background-color: var(--primary-color);
}

/* Mobile Navigation Enhancement */
@media (max-width: 968px) {
  .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    left: -100%;
    top: 65px;
    flex-direction: column;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    width: 100%;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 2rem 0;
    gap: 0.5rem;
    max-height: calc(100vh - 65px);
    overflow-y: auto;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    width: 90%;
    margin: 0 auto;
    justify-content: center;
    padding: 1rem;
  }

  .nav-link i {
    opacity: 1;
    transform: translateX(0);
  }

  /* Add mobile CTA button to menu */
  .nav-menu.active::after {
    content: "";
    display: block;
    width: 90%;
    height: 1px;
    background-color: #e9ecef;
    margin: 1rem auto;
  }
}

/* Desktop specific */
@media (min-width: 969px) {
  .navbar .container {
    padding: 1rem 20px;
  }

  .nav-link span {
    display: inline-block;
  }
}

/* Hero Section với Background Image */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  /* Background image với overlay gradient */
  background-image: 
    linear-gradient(rgba(0, 102, 204, 0.7), rgba(0, 102, 204, 0.7)),
    url('bg.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  overflow: hidden;
  margin-top: 70px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.particle {
  position: absolute;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: float 20s infinite;
}

.particle:nth-child(1) {
  width: 80px;
  height: 80px;
  left: 10%;
  animation-delay: 0s;
}

.particle:nth-child(2) {
  width: 120px;
  height: 120px;
  right: 20%;
  animation-delay: 5s;
}

.particle:nth-child(3) {
  width: 60px;
  height: 60px;
  left: 70%;
  bottom: 0;
  animation-delay: 10s;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100vh) rotate(720deg);
    opacity: 0;
  }
}

.hero-logoso {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem; /* Khoảng cách giữa 2 logo */
  margin: 2rem 0;
}

.hero-logoso {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 3rem;
  margin: 2rem 0;
}

.logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.logo-label {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1rem;
  opacity: 0.9;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-logoso img {
  height: 100px;
  width: 150px;
  object-fit: contain;
  filter: drop-shadow(0 10px 25px rgba(0, 0, 0, 0.5)) brightness(1.1) contrast(1.2);
  transition: all 0.3s ease;
  margin-bottom: 1rem;
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(255,255,255,0.9), rgba(255,255,255,0.7));
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.8);
  padding: 0.8rem;
}

.hero-logoso img:hover {
  transform: translateY(-3px) scale(1.03);
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.4)) brightness(1.05) contrast(1.1);
  box-shadow: 0 12px 35px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.9);
  background: linear-gradient(145deg, rgba(255,255,255,0.95), rgba(255,255,255,0.8));
  background-color: rgba(255, 255, 255, 1);
}

.logo-title {
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  max-width: 200px;
  opacity: 0.85;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

/* Hover effect cho cả logo item */
.logo-item {
  transition: all 0.3s ease;
}

.logo-item:hover .logo-label,
.logo-item:hover .logo-title {
  opacity: 1;
}

@media (max-width: 768px) {
  .hero-logoso {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
  }
  
  .logo-label {
    font-size: 0.8rem;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
  }
  
  .hero-logoso img {
    height: 60px;
    width: 90px;
    padding: 0.8rem;
    margin-bottom: 0.5rem;
  }
  
  .logo-title {
    font-size: 0.75rem;
    max-width: 180px;
  }
}

/* Variant lớn hơn nếu muốn */
.hero-logoso.large img {
  height: 100px;
  width: 100px;
}

.hero-logo {
  text-align: center;
  margin-top: 1.5rem;
  margin-bottom: 2rem;
  z-index: 2;
  position: relative;
}

.hero-logo img {
  max-width: 180px;
  height: auto;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.2));
  animation: fadeIn 1s ease-out;
}

.hero-content {
  text-align: center;
  color: var(--white);
  position: relative;
  z-index: 1;
}

.hero-bigtitle {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent-color); /* Dùng màu vàng đã định nghĩa sẵn */
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  margin-top: 2rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 3rem;
}

/* Countdown */
.countdown-container {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.countdown-container h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.countdown {
  display: flex;
  gap: 2rem;
  justify-content: center;
}

.countdown-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 1.5rem;
  min-width: 100px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.countdown-item span {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
}

.countdown-item p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Animations */
.animate-fade-in {
  animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
  animation: fadeIn 1s ease-out 0.3s both;
}

.animate-fade-in-delay-2 {
  animation: fadeIn 1s ease-out 0.6s both;
}

.animate-fade-in-delay-3 {
  animation: fadeIn 1s ease-out 0.9s both;
}

.animate-fade-in-delay-4 {
  animation: fadeIn 1s ease-out 1.2s both;
}

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

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  color: var(--dark-color);
  margin-bottom: 1rem;
}

.section-titlewhite {
  color: var(--white);
  margin-bottom: 1rem;
}

.title-underline {
  width: 80px;
  height: 4px;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  margin: 0 auto;
  border-radius: 2px;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.objectives {
  margin-top: 2rem;
}

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

.objectives ul {
  list-style: none;
}

.objectives li {
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
}

.objectives li i {
  color: var(--secondary-color);
  margin-right: 1rem;
}

.about-image img {
  border-radius: 10px;
  box-shadow: var(--shadow);
}

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

.audience-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.audience-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon i {
  font-size: 2rem;
  color: var(--white);
}

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

.timeline-container::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background-color: var(--primary-color);
}

.timeline-item {
  position: relative;
  padding: 2rem;
  width: 50%;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
  padding-right: 3rem;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 3rem;
}

.timeline-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--secondary-color);
  border: 3px solid var(--white);
  border-radius: 50%;
  top: 2rem;
  box-shadow: 0 0 0 3px var(--secondary-color);
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -10px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -10px;
}

.timeline-content {
  background-color: var(--white);
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

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

/* Criteria Section */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.criteria-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.criteria-score {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.criteria-card h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.progress-bar {
  width: 100%;
  height: 10px;
  background-color: #e9ecef;
  border-radius: 5px;
  overflow: hidden;
}

.progress {
  height: 100%;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  transition: width 1s ease;
}

/* Benefits Section */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.benefit-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.benefit-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  background: linear-gradient(
    135deg,
    var(--secondary-color),
    var(--accent-color)
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.benefit-icon i {
  font-size: 2rem;
  color: var(--white);
}

/* Registration Section */
.registration-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background-color: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1rem;
}

.registration-cta {
  text-align: center;
  margin-bottom: 2rem;
}

.registration-cta .btn {
  margin: 0 0.5rem;
}

.deadline-notice {
  text-align: left;
  background-color: var(--primary-color);
  border: 1px solid #ffeaa7;
  border-radius: 5px;
  padding: 1rem;
  color: #ffffff;
}

.deadline-notice-time {
  text-align: center;
  background-color: #bb3232;
  border: 1px solid #ffeaa7;
  border-radius: 5px;
  padding: 1rem;
  color: #ffffff;
}

/* Quick Register Form */
.register-form {
  max-width: 800px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.btn-submit {
  display: block;
  margin: 2rem auto 0;
  min-width: 200px;
}

/* FAQ Section */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--white);
  margin-bottom: 1rem;
  border-radius: 10px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  padding: 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background-color: var(--light-color);
}

.faq-question h3 {
  margin: 0;
  font-size: 1.1rem;
}

.faq-question i {
  transition: var(--transition);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 1.5rem 1.5rem;
  max-height: 500px;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: stretch; /* Đảm bảo 2 card có chiều cao bằng nhau */
}

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

.contact-info {
  display: flex;
  flex-direction: column;
}

/* Contact Person Card */
.contact-person-card {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  padding: 2rem;
  border-radius: 15px;
  color: var(--white);
  box-shadow: var(--shadow-hover);
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  transition: var(--transition);
  height: 100%; /* Đảm bảo card chiếm full height */
  min-height: 400px; /* Chiều cao tối thiểu */
}

@media (max-width: 768px) {
  .contact-person-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    min-height: auto;
    gap: 1rem;
  }
  
  .contact-methods {
    gap: 0.8rem;
  }
  
  .contact-method {
    justify-content: center;
    flex-wrap: wrap;
    text-align: center;
  }
  
  .contact-method a,
  .contact-method span {
    word-break: break-word;
    line-height: 1.3;
  }
}

.contact-person-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 102, 204, 0.3);
}

.contact-avatar {
  width: 80px;
  height: 80px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.3);
  flex-shrink: 0;
  overflow: hidden;
}

.contact-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.contact-avatar i {
  font-size: 2rem;
  color: var(--white);
}

.contact-details {
  flex: 1;
}

.contact-details h3 {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.9;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-details h4 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.contact-title {
  font-size: 0.95rem;
  opacity: 0.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.5rem 0;
}

.contact-method i {
  width: 20px;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  flex-shrink: 0;
}

.contact-method a,
.contact-method span {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  line-height: 1.4;
}

.contact-method a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

.contact-method span {
  opacity: 0.9;
}

/* Contact Map */
.contact-map {
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  background-color: var(--white);
  display: flex;
  flex-direction: column;
  height: 100%; /* Đảm bảo map card chiếm full height */
  min-height: 400px; /* Chiều cao tối thiểu bằng contact card */
}

@media (max-width: 768px) {
  .contact-map {
    min-height: 300px;
  }
}

.contact-map h4 {
  color: var(--primary-color);
  margin: 0;
  padding: 1.5rem 1.5rem 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.contact-map iframe {
  flex: 1; /* Map sẽ chiếm phần còn lại của card */
  border: none;
  min-height: 320px;
}

@media (max-width: 768px) {
  .contact-map iframe {
    min-height: 250px;
  }
}

/* Footer */
.footer {
  background: linear-gradient(180deg, var(--primary-color) 0%, #2d2d2d 100%);
  color: var(--white);
  padding: 4rem 0 2rem 0;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
}

.footer-content {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 3rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.footer-info {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2.5rem;
  min-width: 600px;
  max-width: 720px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  margin: 0 auto; /* Căn giữa footer-info */
}

@media (max-width: 768px) {
  .footer-info {
    min-width: unset;
    max-width: unset;
    width: calc(100% - 2rem);
    padding: 1.5rem;
    margin: 0 auto;
  }
}

.footer-info::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.footer-info:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.footer-logo {
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
}

.footer-logo::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(0, 208, 132, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.4s ease;
  z-index: 0;
}

.footer-info:hover .footer-logo::before {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.footer-logo-img {
  height: 5rem;
  width: 5rem;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.3));
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.95);
  padding: 1rem;
  border-radius: 15px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.footer-info:hover .footer-logo-img {
  transform: scale(1.1) translateY(-5px);
  filter: drop-shadow(0 15px 30px rgba(0, 208, 132, 0.4));
  background: rgba(255, 255, 255, 1);
  border-color: var(--secondary-color);
  box-shadow: 0 0 30px rgba(0, 208, 132, 0.3);
}

/* Hiệu ứng glow xung quanh logo */
.footer-logo::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  border: 2px solid var(--secondary-color);
  border-radius: 50%;
  opacity: 0;
  animation: pulse-ring 2s infinite;
}

.footer-info:hover .footer-logo::after {
  opacity: 0.6;
}

@keyframes pulse-ring {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0;
  }
}

.footer-info p,
.footer-info a {
  margin: 0.8rem 0;
  display: flex;
  align-items: center;
  padding: 0.5rem 0;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.footer-info p:hover,
.footer-info a:hover {
  background: rgba(255, 255, 255, 0.05);
  padding-left: 0.5rem;
  transform: translateX(5px);
}

.footer-info i {
  margin-right: 1rem;
  color: var(--secondary-color);
  font-size: 1.2rem;
  width: 20px;
  text-align: center;
  transition: all 0.3s ease;
}

.footer-info a:hover i {
  color: var(--accent-color);
  transform: scale(1.2);
}

.footer-copyright {
  width: 100%;
  text-align: center;
  margin-top: 0rem;
  padding-top: 0rem;
  /* border-top: 1px solid rgba(255, 255, 255, 0.1);*/
  font-size: 0.9rem;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.footer-copyright:hover {
  opacity: 1;
}

.footer-social {
  margin-bottom: 2rem;
}

.social-link {
  display: inline-block;
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  border-radius: 50%;
  line-height: 40px;
  text-align: center;
  color: var(--white);
  margin: 0 0.5rem;
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
}

.hashtags {
  margin-top: 1rem;
}

.hashtags span {
  display: inline-block;
  margin: 0 0.5rem;
  color: var(--accent-color);
}

/* Popup */
.popup {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  animation: fadeIn 0.3s ease;
}

.popup-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--white);
  padding: 2rem;
  border-radius: 10px;
  max-width: 500px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.popup-close {
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 2rem;
  cursor: pointer;
  color: var(--gray-color);
}

.popup-close:hover {
  color: var(--dark-color);
}

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

.popup p {
  margin-bottom: 1.5rem;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
}

/* Back to Main Page Button */
.back-to-main {
  position: fixed;
  bottom: 90px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--accent-color);
  color: var(--dark-color);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: var(--shadow);
}

.back-to-main:hover {
  background-color: var(--secondary-color);
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 2rem 0;
  }

  .nav-menu.active {
    left: 0;
  }

  .hamburger {
    display: flex;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .countdown {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .countdown-item {
    min-width: 80px;
    padding: 1rem;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .timeline-container::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 60px;
    text-align: left;
  }

  .timeline-item:nth-child(even) {
    left: 0;
  }

  .timeline-dot {
    left: 10px !important;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .registration-cta .btn {
    display: block;
    width: 100%;
    margin: 0.5rem 0;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    padding: 0 1rem;
    justify-content: center;
    align-items: center;
  }

  .footer-info {
    margin-bottom: 1.5rem;
    min-width: unset;
    max-width: unset;
    width: calc(100% - 2rem);
    margin: 0 auto 1.5rem auto;
  }

  .footer-copyright {
    margin-top: 1rem;
  }

  .footer-info p,
  .footer-info a {
    justify-content: center; /* Căn giữa icon và text trên mobile */
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0.6rem 0;
    word-break: break-word;
  }
  
  .footer-info i {
    margin-right: 0.8rem;
    flex-shrink: 0;
  }
}

/* ===== ANIMATION CLASSES ===== */
.animate-in {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* Image loading states */
img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img.loaded {
  opacity: 1;
}

/* Ripple effect for buttons */
.btn {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: ripple-animation 0.6s ease-out;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Enhanced particle animation */
.particle {
  position: absolute;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  transition: transform 0.3s ease-out;
}

/* Navbar hide/show animation */
.navbar {
  transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

/* Enhanced hero background */
.hero {
  background-image: 
    linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 208, 132, 0.8) 100%),
    url('bg.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* Add gradient overlay animation */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, 
    rgba(0, 102, 204, 0.3), 
    rgba(0, 208, 132, 0.3), 
    rgba(255, 215, 0, 0.2)
  );
  animation: gradient-shift 10s ease infinite;
  pointer-events: none;
}

@keyframes gradient-shift {
  0%, 100% { opacity: 0; }
  50% { opacity: 0.3; }
}

/* Enhanced countdown animation */
.countdown-item {
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.countdown-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.countdown-item span {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(180deg, #fff 0%, rgba(255, 255, 255, 0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* Section entrance animations */
.section-title {
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: transform 0.5s ease;
}

.section-title.animate-in::after {
  transform: translateX(-50%) scaleX(1);
}

/* Card hover effects */
.audience-card,
.benefit-card {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.audience-card:hover .card-icon,
.benefit-card:hover .benefit-icon {
  animation: bounce 0.6s ease;
}

@keyframes bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* Timeline enhanced animation */
.timeline-item {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.timeline-item.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) {
  transform: translateX(-50px);
}

.timeline-item:nth-child(even) {
  transform: translateX(50px);
}

.timeline-item.animate-in:nth-child(odd),
.timeline-item.animate-in:nth-child(even) {
  transform: translateX(0);
}

/* Timeline dot pulse */
.timeline-dot {
  position: relative;
}

.timeline-dot::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--secondary-color);
  opacity: 0.3;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.5;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0;
  }
  100% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.5;
  }
}

/* Criteria cards number animation */
.criteria-score {
  font-size: 4rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Contact card enhanced hover */
.contact-person-card {
  position: relative;
  overflow: hidden;
}

.contact-person-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  transform: rotate(45deg);
  transition: all 0.5s ease;
  opacity: 0;
}

.contact-person-card:hover::before {
  opacity: 1;
  top: -75%;
  left: -75%;
}

/* Footer enhanced animation */
.footer-info {
  animation: float-subtle 6s ease-in-out infinite;
}

.footer-info:nth-child(2) {
  animation-delay: 3s;
}

@keyframes float-subtle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Mobile menu animation */
@media (max-width: 968px) {
  .nav-menu {
    transition: left 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }
  
  .nav-menu.active {
    animation: slideIn 0.4s ease;
  }
  
  @keyframes slideIn {
    from {
      opacity: 0;
      transform: translateX(-20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
}

/* Loading skeleton for images */
.skeleton-img {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: 10px;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Copy button enhancement */
.copy-btn {
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.3s ease !important;
}

.contact-method:hover .copy-btn {
  opacity: 1;
  transform: scale(1);
}

.copy-btn:hover {
  transform: scale(1.2) !important;
}

/* Enhanced back to top button */
.back-to-top {
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

.back-to-top.show {
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.back-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(0, 102, 204, 0.4);
}

/* Enhanced back to main page button */
.back-to-main {
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

.back-to-main:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(0, 208, 132, 0.4);
}

/* Floating Contact Buttons */
.floating-contact {
  position: fixed;
  bottom: 100px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 998;
  animation: slideInRight 0.8s ease-out, attention 8s ease-in-out infinite 2s;
}

@keyframes slideInRight {
  from {
    transform: translateX(100px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes floatUpDown {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }
  50% {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  }
  100% {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }
}

@keyframes attention {
  0%, 90%, 100% {
    transform: scale(1);
  }
  95% {
    transform: scale(1.15);
  }
}

.contact-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: white;
  font-size: 20px;
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0.9;
  animation: floatUpDown 3s ease-in-out infinite;
}

.contact-btn:hover {
  transform: translateY(-3px) scale(1.1);
  opacity: 1;
  color: white;
}

.phone-btn {
  background: linear-gradient(135deg, #28a745, #20c997);
  animation-delay: 0.2s;
}

.phone-btn:hover {
  box-shadow: 0 8px 20px rgba(40, 167, 69, 0.4);
  animation: pulse 1s ease-in-out infinite;
}

.zalo-btn {
  background: #ffffff;
  border: 2px solid #0084ff;
  animation-delay: 0.4s;
}

.zalo-btn:hover {
  background: #f8f9fa;
  box-shadow: 0 8px 20px rgba(0, 132, 255, 0.3);
  border-color: #0066cc;
  animation: pulse 1s ease-in-out infinite;
}

.zalo-icon {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.email-btn {
  background: linear-gradient(135deg, #dc3545, #e74c3c);
  animation-delay: 0.6s;
}

.email-btn:hover {
  box-shadow: 0 8px 20px rgba(220, 53, 69, 0.4);
  animation: pulse 1s ease-in-out infinite;
}

/* Floating Registration Button */
.floating-register {
  position: fixed;
  top: 30%;
  right: 20px;
  transform: translateY(-50%);
  z-index: 999;
  animation: slideInRight 0.8s ease-out, bounce 4s ease-in-out infinite 2s;
}

.register-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 20px;
  background: linear-gradient(135deg, #ff6b35, #ff8c42);
  color: white;
  text-decoration: none;
  border-radius: 25px 0 0 25px;
  font-weight: 600;
  font-size: 16px;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  min-height: 120px;
  justify-content: center;
}

.register-btn:hover {
  transform: translateX(-10px) scale(1.05);
  box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
  background: linear-gradient(135deg, #ff5722, #ff7043);
  color: white;
}

.register-btn i {
  font-size: 18px;
  margin-bottom: 5px;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(-50%) translateX(0);
  }
  40% {
    transform: translateY(-50%) translateX(-5px);
  }
  60% {
    transform: translateY(-50%) translateX(-3px);
  }
}

/* Responsive design for floating register button */
@media (max-width: 768px) {
  .floating-register {
    right: 10px;
  }
  
  .register-btn {
    padding: 12px 15px;
    font-size: 14px;
    min-height: 100px;
  }
  
  .register-btn i {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .floating-register {
    right: 5px;
  }
  
  .register-btn {
    padding: 10px 12px;
    font-size: 13px;
    min-height: 80px;
  }
  
  .register-btn i {
    font-size: 14px;
  }
}

/* Add glow effect to CTA buttons */
.btn-primary {
  position: relative;
  z-index: 1;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: inherit;
  border-radius: inherit;
  filter: blur(10px);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn-primary:hover::before {
  opacity: 0.7;
}

/* Parallax layers */
.hero-content {
  position: relative;
  z-index: 2;
  transition: transform 0.1s ease-out;
}



/* ===== FEATURES SECTION ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-item {
  background: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
}

.feature-item:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 102, 204, 0.2);
}

.feature-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

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

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

.feature-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.8), rgba(0, 208, 132, 0.8));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-item:hover .feature-overlay {
  opacity: 1;
}

.feature-overlay i {
  font-size: 3rem;
  color: var(--white);
  animation: zoomIn 0.5s ease;
}

@keyframes zoomIn {
  from {
    transform: scale(0);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.feature-content {
  padding: 2rem;
}

.feature-content h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.feature-content p {
  color: var(--text-color);
  line-height: 1.6;
}

.detail-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  border: none;
  padding: 12px 24px;
  border-radius: 25px;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: var(--transition);
  margin: 1.5rem auto 0 auto;
  display: block;
  box-shadow: var(--shadow);
}

.detail-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* ===== SUPPORT PLATFORM SECTION ===== */
.support-platform {
  padding: 5rem 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

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

@media (max-width: 768px) {
  .support-grid {
    grid-template-columns: 1fr;
  }
}

.support-item {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: 15px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(0, 102, 204, 0.1);
}

.support-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-color);
}

.support-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.support-icon i {
  font-size: 2rem;
  color: var(--white);
}

.support-item:hover .support-icon {
  transform: scale(1.1);
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.support-item h3 {
  color: var(--primary-color);
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.support-item p {
  color: var(--text-color);
  line-height: 1.6;
  font-size: 1rem;
}

/* ===== HIGHLIGHT BOX STYLES ===== */
.highlight-box {
  background: linear-gradient(135deg, var(--accent-color), #ffd700);
  padding: 1.5rem 2rem;
  border-radius: 15px;
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
}

.highlight-box i {
  font-size: 2rem;
  color: var(--primary-color);
}

.highlight-box p {
  margin: 0;
  font-size: 1.1rem;
  color: var(--dark-color);
}

/* ===== PROBLEM SECTION STYLES ===== */
.problem-section {
  margin-bottom: 4rem;
}

.problem-title {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

/* ===== SPECIAL PROBLEM STYLES ===== */
.special-problem {
  background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);
  border: 2px solid var(--secondary-color);
  border-radius: 20px;
  padding: 3rem 2rem;
  position: relative;
  overflow: hidden;
}

.special-problem::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

.special-problem-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.special-badge {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 25px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 15px rgba(0, 208, 132, 0.3);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.special-content {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 15px;
  padding: 2rem;
  backdrop-filter: blur(10px);
}

.highlight-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.highlight-item {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 4px solid var(--secondary-color);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.highlight-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.highlight-item i {
  font-size: 1.8rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.highlight-item h4 {
  color: var(--primary-color);
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.highlight-item p {
  color: var(--text-color);
  font-size: 0.95rem;
  margin: 0;
}

.call-to-innovation {
  background: linear-gradient(135deg, var(--accent-color), #ffd700);
  padding: 1.5rem 2rem;
  border-radius: 15px;
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
  border: 2px solid rgba(255, 215, 0, 0.5);
}

.call-to-innovation i {
  font-size: 2rem;
  color: var(--primary-color);
}

.call-to-innovation p {
  margin: 0;
  font-size: 1.1rem;
  color: var(--dark-color);
}

/* ===== LAUNCH PLATFORM STYLES ===== */
.launch-platform {
  padding: 5rem 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* ===== CHECKLIST STYLES ===== */
.checklist-container {
  max-width: 800px;
  margin: 3rem auto 0;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 2rem;
  padding: 1.5rem 2rem;
  background: var(--white);
  border-radius: 15px;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--secondary-color);
  transition: var(--transition);
}

.checklist-item:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-hover);
  border-left-color: var(--primary-color);
}

.check-icon {
  width: 30px;
  height: 30px;
  background: var(--secondary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.check-icon i {
  color: var(--white);
  font-size: 1rem;
  font-weight: bold;
}

.checklist-item p {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-color);
}

.checklist-item strong {
  color: var(--primary-color);
  font-weight: 600;
}

/* ===== FINAL CTA SECTION ===== */
.final-cta {
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="25" cy="25" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="3" fill="rgba(255,255,255,0.05)"/><circle cx="50" cy="10" r="1.5" fill="rgba(255,255,255,0.08)"/></svg>') repeat;
  animation: floatBackground 20s linear infinite;
}

.cta-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.cta-subtitle {
  font-size: 1.3rem;
  line-height: 1.6;
  margin-bottom: 3rem;
  opacity: 0.95;
}

.cta-subtitle strong {
  color: var(--accent-color);
  font-weight: 600;
}

.cta-button-container {
  margin-top: 2rem;
}

.btn-final-cta {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  background: var(--white);
  color: var(--primary-color);
  padding: 1.5rem 3rem;
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 50px;
  transition: var(--transition);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.btn-final-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.5s;
}

.btn-final-cta:hover::before {
  left: 100%;
}

.btn-final-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
  color: var(--secondary-color);
}

.btn-final-cta i {
  font-size: 1.3rem;
  transition: var(--transition);
}

.btn-final-cta:hover i {
  transform: translateX(5px);
}

@keyframes floatBackground {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

/* Responsive */
@media (max-width: 768px) {
  .cta-title {
    font-size: 2.2rem;
  }
  
  .cta-subtitle {
    font-size: 1.1rem;
  }
  
  .btn-final-cta {
    padding: 1.2rem 2rem;
    font-size: 1rem;
  }
}

/* ===== GALLERY SECTION ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: var(--shadow);
  cursor: pointer;
  height: 300px;
}

.gallery-item.large {
  grid-column: span 2;
  height: 400px;
}

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

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

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

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

.gallery-overlay h3 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.gallery-overlay p {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* ===== STATISTICS SECTION ===== */
.statistics {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.statistics::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: rotate 30s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.statistics .section-title {
  color: var(--white);
}

.statistics .title-underline {
  background: var(--accent-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.stat-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.stat-item:hover .stat-icon {
  background: var(--accent-color);
  transform: scale(1.1);
}

.stat-icon i {
  font-size: 2rem;
  color: var(--white);
}

.stat-number {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(180deg, var(--white) 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.stat-item p {
  font-size: 0.9rem;
  opacity: 0.9;
  margin: 0;
}

/* ===== PARTNERS SECTION ===== */
.partners-slider {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.partner-item {
  flex: 0 0 auto;
  padding: 1.5rem;
  background: var(--white);
  border-radius: 15px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  cursor: pointer;
}

.partner-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.partner-item img {
  height: 80px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all 0.3s ease;
}

.partner-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.1);
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-item.large {
    grid-column: span 1;
    height: 300px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
  
  .partners-slider {
    gap: 1.5rem;
  }
  
  .partner-item img {
    height: 60px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.contact .footer-info {
  background: linear-gradient(180deg, var(--primary-color) 0%, #2d2d2d 100%);
  /*background: rgba(0, 102, 204, 0.05);*/
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 102, 204, 0.1);
  border-radius: 20px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  height: 100%;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

@media (max-width: 768px) {
  .contact .footer-info {
    min-height: auto;
    padding: 1.5rem;
  }
}

.contact .footer-info h3 {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.9;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary-color);
}

.contact .footer-info h4 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--dark-color);
}

.contact .footer-subtitle {
  font-size: 0.95rem;
  opacity: 0.8;
  margin-bottom: 2rem !important;
  font-style: italic;
  color: var(--gray-color);
}

.contact .footer-copyright {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #e9ecef;
  font-size: 0.9rem;
  color: var(--gray-color);
}