/* Enhanced Animations and UI Elements */
:root {
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --scale-hover: scale(1.02);
  --hover-y: translateY(-2px);
  --glow: 0 8px 32px -8px rgba(0, 0, 0, 0.12);
  --glow-hover: 0 12px 48px -12px rgba(0, 0, 0, 0.18);
  --ice-blue: rgb(147, 197, 253);
  --ice-blue-glow: 0 0 20px rgba(147, 197, 253, 0.5);
  --gradient-1: linear-gradient(45deg, #60a5fa, #34d399, #60a5fa);
  --gradient-2: linear-gradient(-45deg, #818cf8, #34d399, #818cf8);
}

/* Moving Background Gradient */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    rgba(96, 165, 250, 0.03),
    rgba(52, 211, 153, 0.03),
    rgba(129, 140, 248, 0.03)
  );
  animation: gradientMove 15s linear infinite;
  z-index: -1;
}

@keyframes gradientMove {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* Smooth Page Transitions */
.page-transition {
  opacity: 0;
  animation: fadeIn 0.5s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Enhanced Card Animations */
.card {
  transition: all var(--transition-smooth);
  position: relative;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--gradient-1);
  z-index: -1;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--ice-blue);
  filter: blur(15px);
  z-index: -2;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: var(--hover-y);
  box-shadow: var(--ice-blue-glow);
  border-color: transparent;
}

.card:hover::before {
  opacity: 0.1;
}

.card:hover::after {
  opacity: 0.15;
}

/* Button Animations */
.btn {
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn:hover {
  transform: var(--scale-hover);
}

.btn-primary {
  border: none;
  background-origin: border-box;
  background-clip: padding-box, border-box;
  position: relative;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: -2px;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(
    45deg,
    #60a5fa,
    #34d399,
    #818cf8,
    #60a5fa
  );
  background-size: 300% 300%;
  animation: rotatingGradient 3s linear infinite;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 1px;
  background: var(--primary);
  border-radius: inherit;
  z-index: -1;
  transition: filter 0.3s ease;
}

.btn-primary:hover::after {
  filter: brightness(1.2);
}

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

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Floating Animation for Elements */
.float-animation {
  animation: float 6s ease-in-out infinite;
}

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

/* Smooth Section Transitions */
.section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Enhanced Form Inputs */
.form-grid input,
.form-grid select,
.form-grid textarea {
  transition: border-color var(--transition-smooth),
              box-shadow var(--transition-smooth),
              transform var(--transition-smooth);
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
  transform: var(--scale-hover);
  box-shadow: var(--glow);
}

/* Navigation Hover Effects */
.nav a {
  position: relative;
  transition: color var(--transition-smooth);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease, left 0.3s ease;
}

.nav a:hover::after {
  width: 100%;
  left: 0;
}

/* Gradient Text Effect */
.gradient-text {
  background: linear-gradient(
    45deg,
    var(--primary),
    var(--ice-blue),
    var(--accent),
    var(--primary)
  );
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientFlow 8s ease infinite;
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 150%; }
  100% { background-position: 0% 50%; }
}

/* Section Transitions with Gradient Borders */
.section {
  position: relative;
  margin: 2rem 0;
}

.section::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--gradient-2);
  background-size: 200% 200%;
  border-radius: 1rem;
  animation: gradientFlow 4s linear infinite;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.section:hover::before {
  opacity: 0.1;
}

/* Scroll Progress Indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to right, var(--primary), var(--accent));
  transform-origin: 0 50%;
  transform: scaleX(0);
  transition: transform 0.1s linear;
  z-index: 1000;
}

/* Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Intersection Observer Animations */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Image Hover Effects */
.image-hover {
  transition: transform var(--transition-smooth);
  overflow: hidden;
}

.image-hover img {
  transition: transform var(--transition-smooth);
}

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