/* Optimized Animation Library - Portfolio Site */

/* CSS Variables for consistent theming */
:root {
  --primary-color: #0f4c81;
  --accent-color: #3caedd;
  --accent2-color: #81b29a;
  --text-color: #2d3748;
  --bg-light: #f7fafc;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease;
}

/* Preloader */
.loader {
  display: inline-block;
  width: 40px;
  height: 40px;
  position: relative;
}

.loader:after {
  content: "";
  display: block;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  border: 4px solid var(--primary-color);
  border-color: var(--primary-color) transparent var(--primary-color)
    transparent;
  animation: loader 1.2s linear infinite;
}

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

/* Core Animation Keyframes */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

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

@keyframes slideRight {
  from {
    transform: translateX(-30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes zoomIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

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

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

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease-out forwards;
}

.animate-fade-up {
  animation: slideUp var(--transition-slow) ease-out forwards;
}

.animate-fade-down {
  animation: slideDown var(--transition-slow) ease-out forwards;
}

.animate-fade-left {
  animation: slideLeft var(--transition-slow) ease-out forwards;
}

.animate-fade-right {
  animation: slideRight var(--transition-slow) ease-out forwards;
}

.animate-zoom-in {
  animation: zoomIn var(--transition-slow) ease-out forwards;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

/* Interactive Effects */
.hover-lift {
  transition: transform var(--transition-normal),
    box-shadow var(--transition-normal);
}

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

.image-scale {
  overflow: hidden;
}

.image-scale img {
  transition: transform 0.5s ease;
}

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

/* Link Animations */
.link-underline {
  position: relative;
  display: inline-block;
}

.link-underline::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: currentColor;
  transition: width var(--transition-normal);
}

.link-underline:hover::after {
  width: 100%;
}

/* Form Effects */
input:focus,
textarea:focus {
  transition: all var(--transition-normal);
  transform: translateY(-1px);
}

button {
  transition: all var(--transition-normal);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Gradient Text */
.gradient-text {
  background-size: 200% auto;
  animation: gradientShift 4s ease infinite;
}

/* Animation Control Classes */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate].animate {
  opacity: 1;
  transform: translateY(0);
}

/* Animation Delays */
[data-delay="100"] {
  animation-delay: 0.1s;
}
[data-delay="200"] {
  animation-delay: 0.2s;
}
[data-delay="300"] {
  animation-delay: 0.3s;
}
[data-delay="400"] {
  animation-delay: 0.4s;
}
[data-delay="500"] {
  animation-delay: 0.5s;
}

/* Performance Optimizations */
.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  ::before,
  ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Background Patterns */
.bg-pattern-grid {
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.8) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.8) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: -1px -1px;
}

/* Progress Bar Animation */
.progress-bar {
  width: 0;
  transition: width 1.5s ease-in-out;
}

.progress-bar.animate {
  width: 100%;
}

/* Skill Bar Animation */
.skill-bar {
  width: 0;
  transition: width 1.5s ease-in-out;
  border-radius: 4px;
  overflow: hidden;
}

.skill-bar.animate {
  width: var(--skill-percentage, 100%);
}

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

.loading::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Card Animations */
.card-hover {
  transition: all var(--transition-normal);
}

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

/* Text Reveal Animation */
.text-reveal {
  overflow: hidden;
}

.text-reveal .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
}

.text-reveal.animate .char {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger Animation Delays */
.stagger-1 {
  animation-delay: 0.1s;
}
.stagger-2 {
  animation-delay: 0.2s;
}
.stagger-3 {
  animation-delay: 0.3s;
}
.stagger-4 {
  animation-delay: 0.4s;
}
.stagger-5 {
  animation-delay: 0.5s;
}

/* Utility Classes */
.transition-fast {
  transition: all var(--transition-fast);
}
.transition-normal {
  transition: all var(--transition-normal);
}
.transition-slow {
  transition: all var(--transition-slow);
}

/* Focus Styles for Accessibility */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

button:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  }
}