:root {
  --primary-color: #2d3436;
  --secondary-color: #636e72;
  --accent-color: #0984e3;
  --background-color: #f5f6fa;
  --hover-color: #74b9ff;
  --gradient-start: #6c5ce7;
  --gradient-end: #a388ee;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #f6f7fb 0%, #f0f2f7 100%);
  color: var(--primary-color);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

header {
  text-align: center;
  margin-bottom: 5rem;
  position: relative;
}

header::after {
  content: '';
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
  border-radius: 2px;
}

h1 {
  font-size: 3.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleFade 1s ease-in;
}

.subtitle {
  color: var(--secondary-color);
  font-size: 1.3rem;
  font-weight: 300;
  letter-spacing: 1px;
  animation: subtitleSlide 1s ease-out;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-bottom: 4rem;
  padding: 1rem;
}

.portfolio-item {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 2.5rem;
  text-decoration: none;
  color: var(--primary-color);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.portfolio-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(163, 136, 238, 0.1));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.portfolio-item:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.portfolio-item:hover::before {
  opacity: 1;
}

.portfolio-item h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  position: relative;
}

.portfolio-item h2::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
  border-radius: 1.5px;
}

.portfolio-item p {
  color: var(--secondary-color);
  font-size: 1.1rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 3rem;
}

.social-icon {
  width: 45px;
  height: 45px;
  color: var(--secondary-color);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  padding: 0.5rem;
  border-radius: 50%;
  background: white;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.social-icon:hover {
  color: var(--gradient-start);
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 8px 15px rgba(108, 92, 231, 0.2);
}

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

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

@media (max-width: 768px) {
  .container {
    padding: 2rem 1rem;
  }

  h1 {
    font-size: 2.8rem;
  }

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

  .social-icon {
    width: 40px;
    height: 40px;
  }
}