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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleDown {
  from {
    opacity: 0;
    transform: scale(1.2);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes rotateIn {
  from {
    opacity: 0;
    transform: rotate(-15deg);
  }
  to {
    opacity: 1;
    transform: rotate(0);
  }
}

@keyframes bounceIn {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-20px);
  }
  60% {
    transform: translateY(-10px);
  }
}

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

@keyframes typewriter {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink {
  50% {
    border-color: transparent;
  }
}

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

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

/* Scroll Animation Classes */
.scroll-hidden {
  opacity: 0;
  transition: all 0.8s ease;
}

.scroll-visible {
  opacity: 1;
}

.scroll-fade-up {
  transform: translateY(30px);
}

.scroll-fade-down {
  transform: translateY(-30px);
}

.scroll-fade-left {
  transform: translateX(-30px);
}

.scroll-fade-right {
  transform: translateX(30px);
}

.scroll-scale-up {
  transform: scale(0.8);
}

.scroll-scale-down {
  transform: scale(1.2);
}

.scroll-rotate {
  transform: rotate(-10deg);
}

/* Loading Animation Styles */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background-color: var(--gray-100);
  overflow: hidden;
}

.main-heading {
  margin-bottom: var(--spacing-lg);
}

.main-heading .line {
  display: block;
  overflow: hidden;
}

.hero.loaded .main-heading .line:first-child {
  animation: fadeInDown 0.8s ease forwards;
}

.hero.loaded .main-heading .line.highlight {
  animation: fadeInUp 0.8s ease 0.2s forwards;
  color: var(--secondary-color);
}

.hero-text {
  max-width: 500px;
  margin-bottom: var(--spacing-lg);
}

.hero.loaded .hero-text {
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
}

.hero.loaded .hero-cta {
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero-image {
  position: relative;
}

.hero.loaded .hero-image {
  animation: fadeInRight 1s ease 0.6s forwards;
}

.image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
}

.image-container:hover {
  transform: translateY(-5px);
}

.hero-image img {
  width: 100%;
  height: 90vh;
  display: block;
  transition: transform var(--transition-slow);
}

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

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeInUp 1s ease 1.2s both;
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid var(--gray-600);
  border-radius: 14px;
  position: relative;
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.wheel {
  width: 4px;
  height: 8px;
  background-color: var(--secondary-color);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  animation: wheel 1.5s infinite;
}

@keyframes wheel {
  0%, 100% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(8px);
    opacity: 0.5;
  }
}

.arrows {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.arrow {
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--gray-600);
  border-bottom: 2px solid var(--gray-600);
  transform: rotate(45deg);
  margin-bottom: 4px;
  animation: arrow 1.5s infinite;
}

.arrow:nth-child(2) {
  animation-delay: 0.2s;
}

.arrow:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes arrow {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

/* Project Animation */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  animation: fadeIn 0.6s ease both;
}

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

.project-card:nth-child(odd) {
  animation-delay: 0.2s;
}

.project-card:nth-child(even) {
  animation-delay: 0.4s;
}

.project-image {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.project-category {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background-color: var(--secondary-color);
  color: var(--white);
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  z-index: 1;
}

.project-content {
  padding: var(--spacing-md);
}

.project-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.project-description {
  color: var(--gray-600);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-link {
  display: inline-flex;
  align-items: center;
  color: var(--secondary-color);
  font-weight: 500;
}

.project-link i {
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-fast);
}

.project-link:hover i {
  transform: translateX(3px);
}

/* Filter Animation */
.filter-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.filter-btn {
  background: none;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-full);
  font-weight: 500;
  color: var(--gray-700);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--secondary-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.filter-btn:hover, 
.filter-btn.active {
  color: var(--secondary-color);
}

.filter-btn:hover::after, 
.filter-btn.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* About Section Animation */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.about-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-image::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border: 2px solid var(--secondary-color);
  border-radius: var(--border-radius-lg);
  z-index: -1;
  opacity: 0.3;
}

.about-image img {
  width: 100%;
  display: block;
  transition: transform var(--transition-slow);
}

.about-image:hover img {
  transform: scale(1.03);
}

.skill-category {
  margin-bottom: var(--spacing-md);
}

.skill-category h3 {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-sm);
  color: var(--gray-700);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .about-image {
    margin-bottom: var(--spacing-lg);
  }
}

/* Contact Animation */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-xl);
}

.contact-info {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.info-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.info-item i {
  font-size: 1.5rem;
  color: var(--secondary-color);
  margin-right: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.info-item h3 {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-xs);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary-color-light);
  color: var(--primary-color);
  transition: all var(--transition-fast);
}

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

.contact-form {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
  .contact-container {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    margin-bottom: var(--spacing-lg);
  }
}

/* Button Loader Animation */
.btn-loader {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--white);
  animation: spin 1s ease-in-out infinite;
  margin-left: var(--spacing-sm);
}

.btn.loading .btn-text {
  display: none;
}

.btn.loading .btn-loader {
  display: inline-block;
}