:root {
  --primary: #1B2B6B;
  --primary-light: #2A3F8F;
  --primary-dark: #111D4A;
  --dark: #1A1A2E;
  --gray-700: #374151;
  --gray-400: #9CA3AF;
  --gray-100: #F3F4F6;
  --white: #FFFFFF;
  --accent: #3B82F6;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  color: var(--gray-700);
}

/* Hero gradient mesh background */
.hero-bg {
  background: linear-gradient(135deg, #070d1f 0%, #0f1b42 30%, #1B2B6B 60%, #111D4A 100%);
  position: relative;
  overflow: hidden;
}

/* Animated aurora glow orbs */
.aurora-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 1;
  pointer-events: none;
}

.aurora-orb-1 {
  width: 600px;
  height: 600px;
  top: -15%;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
  animation: aurora1 8s ease-in-out infinite;
}

.aurora-orb-2 {
  width: 500px;
  height: 500px;
  bottom: -10%;
  right: -10%;
  background: radial-gradient(circle, rgba(99,102,241,0.2) 0%, transparent 70%);
  animation: aurora2 10s ease-in-out infinite;
}

.aurora-orb-3 {
  width: 400px;
  height: 400px;
  top: 40%;
  left: -5%;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%);
  animation: aurora3 12s ease-in-out infinite;
}

@keyframes aurora1 {
  0%, 100% { transform: translateX(-50%) translateY(0) scale(1); opacity: 0.7; }
  50% { transform: translateX(-50%) translateY(30px) scale(1.15); opacity: 1; }
}

@keyframes aurora2 {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); opacity: 0.5; }
  50% { transform: translateX(-40px) translateY(-30px) scale(1.1); opacity: 0.8; }
}

@keyframes aurora3 {
  0%, 100% { transform: translateX(0) scale(1); opacity: 0.4; }
  50% { transform: translateX(30px) scale(1.2); opacity: 0.7; }
}

/* Dot grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: radial-gradient(rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* Gradient text for hero headline */
.hero-gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #818cf8 50%, #60a5fa 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s ease-in-out infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

/* Navbar sticky shadow */
.navbar-scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
  background: rgba(255,255,255,0.98);
}

/* Card hover effect */
.service-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

/* FAQ accordion */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-icon {
  transition: transform 0.3s ease;
}

/* CTA button hover */
.btn-cta {
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59,130,246,0.4);
}

/* Fade-in animation on scroll */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Form success message */
.form-success {
  display: none;
}

.form-success.show {
  display: block;
}