* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #8b5cf6;
  --secondary-color: #06d6a0;
  --secondary-dark: #05a085;
  --accent-color: #f59e0b;
  --accent-pink: #ec4899;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-secondary: linear-gradient(135deg, #06d6a0 0%, #10b981 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
}

body {
  background: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Header */
header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.9);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  text-decoration: none;
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
}

.logo:hover {
  transform: scale(1.05);
}

.logo-image {
  height: 40px;
  width: auto;
  object-fit: contain;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

nav a:hover {
  color: var(--primary-color);
}

nav a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--gradient-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
  background: var(--gradient-hero);
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
  pointer-events: none;
}

@keyframes heroBackground {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="2"/></g></svg>');
  animation: float 20s linear infinite;
  pointer-events: none;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  color: white;
  line-height: 1.2;
  position: relative;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  font-weight: 700;
}

.hero p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  position: relative;
  z-index: 1; /* ensure above decorative overlays */
}

.cta-button {
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.cta-button:hover::before {
  transform: translateX(100%);
}

.cta-button:not(.secondary) {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-lg);
  border: 2px solid transparent;
}

.cta-button:not(.secondary):hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  filter: brightness(1.1);
}

.cta-button:not(.secondary):active {
  transform: translateY(-1px);
}

.cta-button.secondary {
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
  backdrop-filter: blur(10px);
}

.cta-button.secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

/* Tablet: 2 cột */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile: 1 cột (đã có nhưng đảm bảo ưu tiên) */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--gradient-card);
  padding: 2rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: all 0.3s ease;
  transform: scaleX(0);
  transform-origin: left;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.feature-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: rgba(99, 102, 241, 0.2);
}

.feature-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.feature-card:hover::after {
  opacity: 0.05;
}

.feature-card i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.feature-card:hover i {
  transform: scale(1.15) rotate(5deg);
  color: var(--primary-light);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.feature-card:hover h3 {
  color: var(--primary-color);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* Use Cases Section */
.use-cases {
  padding: 6rem 2rem;
  background: var(--bg-white);
  position: relative;
}

.use-cases::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--primary-color), transparent);
  opacity: 0.2;
}

.use-cases-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.use-case-card {
  background: var(--gradient-card);
  padding: 2rem;
  border-radius: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.use-case-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-secondary);
  transform: scaleX(0);
  transform-origin: right;
  transition: all 0.3s ease;
}

.use-case-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-secondary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.use-case-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: rgba(6, 214, 160, 0.2);
}

.use-case-card:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.use-case-card:hover::after {
  opacity: 0.05;
}

.use-case-card i {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.use-case-card:hover i {
  transform: scale(1.15) rotate(5deg);
  color: var(--secondary-dark);
}

.use-case-card h4 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.use-case-card:hover h4 {
  color: var(--secondary-color);
}

.use-case-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* Process Section */
.process {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.process-timeline {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: calc(100% - 5rem);
  background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
  opacity: 0.2;
}

.process-step {
  flex: 1;
  min-width: 250px;
  text-align: center;
  padding: 2rem;
  background: var(--bg-white);
  border-radius: 1rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  position: relative;
}

.process-step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.process-step span {
  display: inline-block;
  width: 3rem;
  height: 3rem;
  line-height: 3rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  margin-bottom: 1.5rem;
  font-weight: 600;
  position: relative;
  z-index: 1;
}

.process-step h4 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.process-step p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Tutorial Section */
.tutorial {
  padding: 6rem 2rem;
  background: var(--bg-light);
  position: relative;
}

.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.tutorial-card {
  background: var(--bg-white);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.tutorial-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

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

.tutorial-card:hover::before {
  opacity: 0.05;
}

.tutorial-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
  transition: transform 0.3s ease;
}

.tutorial-card:hover .tutorial-image {
  transform: scale(1.05);
}

.tutorial-card h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.25rem;
  position: relative;
}

.tutorial-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
}

/* Pricing Section */
.pricing {
  padding: 6rem 2rem;
  background: var(--bg-white);
  position: relative;
}

.pricing-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  text-align: center;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto 3rem;
}

.pricing-card {
  background: var(--gradient-card);
  border-radius: 1.5rem;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.pricing-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: all 0.3s ease;
  transform: scaleX(0);
  transform-origin: left;
}

.pricing-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: rgba(99, 102, 241, 0.2);
}

.pricing-card:hover::before {
  opacity: 0.05;
}

.pricing-card:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.pricing-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
  background: linear-gradient(145deg, #ffffff 0%, #f8fafc 50%, #e0e7ff 100%);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-12px) scale(1.02);
}

.pricing-badge {
  position: absolute;
  top: 1rem;
  right: -2rem;
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 3rem;
  transform: rotate(45deg);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.pricing-header {
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.pricing-header i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  transition: all 0.3s ease;
}

.pricing-card:hover .pricing-header i {
  transform: scale(1.1) rotate(5deg);
  color: var(--primary-light);
}

.pricing-header h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.pricing-card:hover .pricing-header h3 {
  color: var(--primary-color);
}

.pricing-cta {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.pricing-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.price {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-top: 1rem;
  position: relative;
  z-index: 1;
}

.price .amount {
  font-weight: 700;
}

.price .currency {
  font-size: 1.5rem;
  font-weight: 600;
  vertical-align: super;
}

.price .period {
  font-size: 1rem;
  color: var(--text-secondary);
}

.pricing-features {
  list-style: none;
  margin: 0 0 2rem;
  position: relative;
  z-index: 1;
}

.pricing-features li {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  position: relative;
  transition: color 0.3s ease;
}

.pricing-card:hover .pricing-features li {
  color: var(--text-primary);
}

.pricing-features i {
  color: var(--secondary-color);
  margin-right: 0.75rem;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.pricing-card:hover .pricing-features i {
  color: var(--secondary-dark);
  transform: scale(1.1);
}

/* CTA Section */
.cta-section {
  padding: 6rem 2rem;
  background: var(--gradient-primary);
  color: white;
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
}

.cta-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cta-content p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  line-height: 1.6;
}

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

.benefit-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
}

.benefit-item i {
  color: var(--secondary-color);
  font-size: 1.25rem;
  width: 20px;
}

.benefit-item span {
  font-size: 1rem;
  font-weight: 500;
}

/* Form Container */
.form-container {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border-radius: 2rem;
  padding: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.form-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  z-index: 0;
}

.form-header {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.form-header h3 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  color: white;
  font-weight: 700;
}

.form-header p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}

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

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-group i {
  position: absolute;
  left: 1rem;
  color: var(--primary-color);
  font-size: 1rem;
  z-index: 2;
  transition: color 0.3s ease;
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: white;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

.input-group input:focus + i,
.input-group select:focus + i {
  color: var(--primary-light);
}

.select-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 1rem center;
  background-repeat: no-repeat;
  background-size: 1rem;
  padding-right: 3rem;
}

.submit-btn {
  background: var(--gradient-secondary);
  color: white;
  padding: 1.25rem 2rem;
  border: none;
  border-radius: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.submit-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.submit-btn:hover::before {
  transform: translateX(100%);
}

.submit-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  filter: brightness(1.1);
}

.submit-btn i {
  transition: transform 0.3s ease;
}

.submit-btn:hover i {
  transform: translateX(3px);
}

.form-note {
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

/* Form Validation States */
.input-group input:valid,
.input-group select:valid {
  border-color: var(--secondary-color);
}

.input-group input:invalid:not(:placeholder-shown),
.input-group select:invalid:not(:placeholder-shown) {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.input-group input:invalid:not(:placeholder-shown) + i,
.input-group select:invalid:not(:placeholder-shown) + i {
  color: #ef4444;
}

.input-group input:valid + i,
.input-group select:valid + i {
  color: var(--secondary-color);
}

/* Loading State */
.submit-btn.loading {
  pointer-events: none;
  opacity: 0.8;
}

.submit-btn.loading span {
  opacity: 0;
}

.submit-btn.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Success State */
.input-group.success input,
.input-group.success select {
  border-color: var(--secondary-color);
  background: rgba(6, 214, 160, 0.05);
}

.input-group.success i {
  color: var(--secondary-color);
}

/* Error State */
.input-group.error input,
.input-group.error select {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
  animation: shake 0.5s ease-in-out;
}

.input-group.error i {
  color: #ef4444;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* Focus Ring Animation */
.input-group input:focus,
.input-group select:focus {
  animation: focusRing 0.3s ease-out;
}

@keyframes focusRing {
  0% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.3);
  }
  100% {
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  }
}

/* About Page Styles */
.about-hero {
  background: var(--gradient-hero);
  padding: 8rem 2rem 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
}

.about-hero-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.about-hero-content h1 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.about-content {
  padding: 6rem 2rem;
  background: var(--bg-light);
}

.about-container {
  max-width: 1200px;
  margin: 0 auto;
}

.about-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 6rem;
}

.about-text h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.about-text .lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

.platform-icons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding: 2rem;
}

.platform-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  background: var(--gradient-card);
  border-radius: 1rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.platform-icon:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.platform-icon i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.platform-icon span {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.benefits-section {
  margin-bottom: 6rem;
  text-align: center;
}

.benefits-section h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.benefit-card {
  background: var(--gradient-card);
  padding: 2.5rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: all 0.3s ease;
  transform: scaleX(0);
  transform-origin: left;
}

.benefit-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.benefit-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.benefit-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: all 0.3s ease;
}

.benefit-card:hover .benefit-icon {
  transform: scale(1.1);
}

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

.benefit-card h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.benefit-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1rem;
}

.mission-section {
  background: var(--bg-white);
  padding: 4rem;
  border-radius: 2rem;
  box-shadow: var(--shadow-lg);
  margin-bottom: 6rem;
}

.mission-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.mission-text h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.mission-lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.mission-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mission-feature {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
}

.mission-feature i {
  color: var(--secondary-color);
  font-size: 1.25rem;
  width: 20px;
}

.mission-feature span {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 500;
}

.ai-visualization {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 0 auto;
}

.ai-brain {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  animation: pulse 2s infinite;
}

.ai-brain i {
  font-size: 2rem;
  color: white;
}

.ai-connections {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.connection {
  position: absolute;
  background: var(--gradient-primary);
  opacity: 0.3;
  animation: connectionPulse 3s ease-in-out infinite;
}

.connection-1 {
  top: 20%;
  left: 20%;
  width: 60%;
  height: 2px;
  transform: rotate(45deg);
  animation-delay: 0s;
}

.connection-2 {
  top: 20%;
  right: 20%;
  width: 60%;
  height: 2px;
  transform: rotate(-45deg);
  animation-delay: 0.5s;
}

.connection-3 {
  bottom: 20%;
  left: 20%;
  width: 60%;
  height: 2px;
  transform: rotate(-45deg);
  animation-delay: 1s;
}

.connection-4 {
  bottom: 20%;
  right: 20%;
  width: 60%;
  height: 2px;
  transform: rotate(45deg);
  animation-delay: 1.5s;
}

.ai-nodes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.node {
  position: absolute;
  width: 50px;
  height: 50px;
  background: var(--gradient-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  animation: nodeFloat 4s ease-in-out infinite;
}

.node-1 {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.node-2 {
  top: 10%;
  right: 10%;
  animation-delay: 1s;
}

.node-3 {
  bottom: 10%;
  left: 10%;
  animation-delay: 2s;
}

.node-4 {
  bottom: 10%;
  right: 10%;
  animation-delay: 3s;
}

.node i {
  font-size: 1.25rem;
  color: white;
}

@keyframes connectionPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

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

.about-cta {
  text-align: center;
  background: var(--gradient-primary);
  padding: 4rem 2rem;
  border-radius: 2rem;
  color: white;
  position: relative;
  overflow: hidden;
}

.about-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
}

.about-cta h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.about-cta p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  position: relative;
  z-index: 1;
}

/* Responsive Design for About Page */
@media (max-width: 768px) {
  .about-hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .about-section {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .about-text h2 {
    font-size: 2rem;
  }

  .platform-icons {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1rem;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .mission-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .mission-section {
    padding: 2rem;
  }

  .ai-visualization {
    width: 250px;
    height: 250px;
  }

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

  .about-cta h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .about-hero {
    padding: 6rem 1rem 4rem;
  }

  .about-content {
    padding: 4rem 1rem;
  }

  .about-hero-content h1 {
    font-size: 2rem;
  }

  .platform-icons {
    grid-template-columns: 1fr;
  }

  .benefit-card {
    padding: 2rem;
  }

  .mission-section {
    padding: 1.5rem;
  }

  .ai-visualization {
    width: 200px;
    height: 200px;
  }
}

/* Mission Page Styles */
.mission-hero {
  background: var(--gradient-hero);
  padding: 8rem 2rem 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mission-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 30% 70%, rgba(99, 102, 241, 0.4) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(236, 72, 153, 0.4) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
}

.mission-hero-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.mission-hero-content h1 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  font-weight: 700;
}

.mission-content {
  padding: 6rem 2rem;
  background: var(--bg-light);
  width: 100%;
  box-sizing: border-box;
}

.mission-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.philosophy-section {
  margin-bottom: 6rem;
  text-align: center;
}

.philosophy-header {
  margin-bottom: 4rem;
}

.philosophy-header h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.philosophy-lead {
  font-size: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 500;
  font-style: italic;
  max-width: 800px;
  margin: 0 auto;
}

.tech-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.principle-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem;
  background: var(--gradient-card);
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.principle-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.principle-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.principle-card:hover .principle-icon {
  transform: scale(1.1);
}

.principle-icon i {
  font-size: 2rem;
  color: white;
}

.principle-card h4 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.principle-card p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0;
  line-height: 1.5;
}

.mission-goals-section {
  margin-bottom: 6rem;
  text-align: center;
}

.section-header {
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.mission-goals-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin: 4rem auto 0;
  max-width: 1200px;
  padding: 0 20px;
  box-sizing: border-box;
}

.mission-goal-card {
  background: var(--gradient-card);
  padding: 2.5rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.mission-goal-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-secondary);
  opacity: 0;
  transition: all 0.3s ease;
  transform: scaleX(0);
  transform-origin: left;
}

.mission-goal-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.mission-goal-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.goal-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: all 0.3s ease;
}

.mission-goal-card:hover .goal-icon {
  transform: scale(1.1);
}

.goal-icon i {
  font-size: 2rem;
  color: white;
}

.mission-goal-card h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.mission-goal-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 1rem;
}

.vision-section {
  background: var(--bg-white);
  padding: 4rem;
  border-radius: 2rem;
  box-shadow: var(--shadow-lg);
  margin-bottom: 6rem;
}

.vision-header {
  text-align: center;
  margin-bottom: 4rem;
}

.vision-header h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.vision-lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 500;
  max-width: 800px;
  margin: 0 auto;
}

.vision-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.vision-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.vision-feature {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--gradient-card);
  border-radius: 1rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.feature-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-icon i {
  color: white;
  font-size: 1.25rem;
}

.feature-content h4 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.feature-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.5;
}

.launchpad-visualization {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 0 auto;
}

.launchpad-base {
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 100px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  animation: rocketPulse 2s infinite;
}

.launchpad-base i {
  font-size: 2.5rem;
  color: white;
  animation: rocketFloat 3s ease-in-out infinite;
}

.launchpad-trails {
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 100px;
}

.trail {
  position: absolute;
  background: var(--gradient-secondary);
  border-radius: 2px;
  animation: trailAnimation 2s ease-in-out infinite;
}

.trail-1 {
  width: 4px;
  height: 60px;
  left: 20px;
  bottom: -60px;
  animation-delay: 0s;
}

.trail-2 {
  width: 4px;
  height: 80px;
  left: 48px;
  bottom: -80px;
  animation-delay: 0.3s;
}

.trail-3 {
  width: 4px;
  height: 60px;
  right: 20px;
  bottom: -60px;
  animation-delay: 0.6s;
}

.launchpad-stars {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.star {
  position: absolute;
  color: var(--accent-color);
  font-size: 1.5rem;
  animation: starTwinkle 3s ease-in-out infinite;
}

.star-1 {
  top: 10%;
  left: 20%;
  animation-delay: 0s;
}

.star-2 {
  top: 20%;
  right: 15%;
  animation-delay: 0.5s;
}

.star-3 {
  top: 40%;
  left: 10%;
  animation-delay: 1s;
}

.star-4 {
  top: 60%;
  right: 20%;
  animation-delay: 1.5s;
}

.star-5 {
  top: 80%;
  left: 30%;
  animation-delay: 2s;
}

.star-6 {
  top: 15%;
  left: 60%;
  animation-delay: 2.5s;
}

@keyframes rocketPulse {
  0%, 100% { transform: translateX(-50%) scale(1); }
  50% { transform: translateX(-50%) scale(1.05); }
}

@keyframes rocketFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

@keyframes trailAnimation {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 0.8; transform: scaleY(1.2); }
}

@keyframes starTwinkle {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.2); }
}

.impact-section {
  text-align: center;
  margin-bottom: 6rem;
}

.impact-header {
  margin-bottom: 4rem;
}

.impact-header h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.impact-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.impact-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-item {
  background: var(--gradient-card);
  padding: 2rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
}

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

.stat-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  transition: all 0.3s ease;
}

.stat-item:hover .stat-icon {
  transform: scale(1.1);
}

.stat-icon i {
  font-size: 1.5rem;
  color: white;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.mission-cta {
  text-align: center;
  background: var(--gradient-primary);
  padding: 4rem 2rem;
  border-radius: 2rem;
  color: white;
  position: relative;
  overflow: hidden;
}

.mission-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
}

.mission-cta h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.mission-cta p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

/* Responsive Design for Mission Page */
@media (max-width: 768px) {
  .mission-hero-content h1 {
    font-size: 2.5rem;
  }

  .philosophy-header h2 {
    font-size: 2rem;
  }

  .philosophy-lead {
    font-size: 1.25rem;
  }

  .tech-principles {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .mission-goals-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .vision-header h2 {
    font-size: 2rem;
  }

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

  .vision-section {
    padding: 2rem;
  }

  .launchpad-visualization {
    width: 250px;
    height: 250px;
  }

  .impact-header h2 {
    font-size: 2rem;
  }

  .impact-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .mission-cta h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .mission-hero {
    padding: 6rem 1rem 4rem;
  }

  .mission-content {
    padding: 4rem 1rem;
  }

  .mission-hero-content h1 {
    font-size: 2rem;
  }

  .philosophy-lead {
    font-size: 1.125rem;
  }

  .mission-goal-card {
    padding: 2rem;
  }

  .vision-section {
    padding: 1.5rem;
  }

  .launchpad-visualization {
    width: 200px;
    height: 200px;
  }

  .impact-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .stat-number {
    font-size: 2.5rem;
  }
}

/* Footer */
footer {
  background: var(--text-primary);
  color: white;
  padding: 4rem 2rem 2rem;
  position: relative;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
}

.footer-column h4 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--secondary-color);
}

.footer-column ul {
  list-style: none;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  display: inline-block;
  margin-bottom: 0.5rem;
}

.footer-column a:hover {
  color: white;
  transform: translateX(5px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

  .nav-container {
    padding: 1rem;
  }

  nav ul {
    display: none;
  }

  .process-timeline::before {
    display: none;
  }

  .process-step {
    min-width: 100%;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }

  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-column h4::after {
    left: 50%;
    transform: translateX(-50%);
  }

  /* Thêm các grid layout chuyển sang 1 cột */
  .features-grid,
  .use-cases-grid,
  .tutorial-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

  /* CTA Section Mobile */
  .cta-container {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .cta-content h2 {
    font-size: 2.5rem;
  }

  .cta-content p {
    font-size: 1.125rem;
  }

  .benefits {
    align-items: center;
  }

  .form-container {
    padding: 2rem 1.5rem;
  }

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

  .form-header h3 {
    font-size: 1.5rem;
  }

  .submit-btn {
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .cta-section {
    padding: 4rem 1rem;
  }

  .cta-content h2 {
    font-size: 2rem;
  }

  .form-container {
    padding: 1.5rem 1rem;
    border-radius: 1.5rem;
  }

  .form-header h3 {
    font-size: 1.25rem;
  }

  .input-group input,
  .input-group select {
    padding: 0.875rem 0.875rem 0.875rem 2.5rem;
    font-size: 0.95rem;
  }

  .input-group i {
    left: 0.875rem;
    font-size: 0.875rem;
  }

  .submit-btn {
    padding: 1rem;
    font-size: 0.95rem;
  }
}

/* Animations */
@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.6);
  }
}

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

.feature-card i,
.use-case-card i {
  animation: float 3s ease-in-out infinite;
}

.pricing-card.featured {
  animation: glow 3s ease-in-out infinite;
}

.cta-button:not(.secondary) {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  background-size: 200% 200%;
  animation: shimmer 3s ease-in-out infinite;
}

/* Thank You Section */
.thank-you-section {
  padding: 8rem 2rem;
  background: var(--gradient-hero);
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.thank-you-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.2) 0%, transparent 50%);
  animation: heroBackground 20s ease-in-out infinite;
}

.thank-you-container {
  max-width: 600px;
  text-align: center;
  background: var(--gradient-card);
  padding: 3rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.thank-you-icon {
  margin-bottom: 2rem;
}

.thank-you-icon i {
  font-size: 4rem;
  color: var(--secondary-color);
  animation: pulse 2s infinite;
  filter: drop-shadow(0 4px 8px rgba(6, 214, 160, 0.3));
}

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

.thank-you-container h1 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.thank-you-message {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.next-steps {
  text-align: left;
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: 0.75rem;
}

.next-steps h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-align: center;
}

.next-steps ul {
  list-style: none;
  padding: 0;
}

.next-steps li {
  display: flex;
  align-items: center;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.next-steps i {
  color: var(--primary-color);
  margin-right: 0.75rem;
  width: 20px;
}

.contact-info {
  margin-bottom: 2.5rem;
}

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

.contact-items {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

.contact-item i {
  color: var(--primary-color);
}

.thank-you-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .thank-you-container {
    padding: 2rem 1.5rem;
  }
  
  .thank-you-container h1 {
    font-size: 2rem;
  }
  
  .contact-items {
    flex-direction: column;
    gap: 1rem;
  }
  
  .thank-you-actions {
    flex-direction: column;
  }
}

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

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

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

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

.pricing-footer {
  margin-top: 4rem;
  padding: 2rem;
  background: var(--bg-white);
  border-radius: 1rem;
  box-shadow: var(--shadow-md);
}

.pricing-includes-header {
  text-align: center;
  margin-bottom: 2rem;
}

.pricing-includes-header i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.pricing-includes-header h3 {
  font-size: 1.75rem;
  color: var(--text-primary);
}

.pricing-includes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.include-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-light);
  border-radius: 0.75rem;
  transition: all 0.3s ease;
}

.include-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.include-icon {
  background: var(--gradient-primary);
  padding: 1rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.include-icon i {
  font-size: 1.5rem;
  color: white;
}

.include-content h4 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.include-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .pricing-includes {
    grid-template-columns: 1fr;
  }
  
  .include-item {
    padding: 1rem;
  }
}