:root {
  --bg-gradient-start: #0a192f;
  --bg-gradient-end: #2a3f5f;
  --text-color: #e6f1ff;
  --link-color: #64ffda;
  --link-hover-color: #9bf6e4;
  --header-link-color:#c1dbdc;
  --heading-color: #c1dbdc;
  --header-bg: rgba(7, 18, 39, 0.95);
  --border-color: #1d3557;
  --card-bg: rgba(26, 32, 44, 0.4);
  --card-hover: rgba(26, 32, 44, 0.6);
}

body {
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  color: var(--text-color);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  width: 100%;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  text-decoration: none;
  opacity: 0.8;
}

header a {
  color: var(--header-link-color);
}

.portfolio-section h2 {
  color: var(--section-title-color);
}

.project-card h3 a {
  color: var(--link-color);
}

.project-card h3 a:hover {
  color: var(--link-hover-color);
}

.wrapper {
  display: flex;
  gap: 2rem;
  max-width: 90%;
  width: 90%;
  margin: 0 auto;
  padding: 20px;
}

header {
  position: sticky;
  top: 20px;
  height: calc(100vh - 40px);
  flex: 0 0 300px;
  background-color: var(--header-bg);
  border-radius: 10px;
  padding: 20px;
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
}

header img {
  max-width: 100%;
  border-radius: 10px;
  margin-bottom: 1rem;
}

section {
  flex: 1;
  min-width: 0;
  width: 100%;
}


.portfolio-grid {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  width: 100%;
}

.portfolio-section {
  flex: 1;
  min-width: 0;
  background: var(--card-bg);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.portfolio-section h2 {
  color: var(--heading-color);
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.project-card {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  transition: background-color 0.2s ease;
}

.project-card:hover {
  background: var(--card-hover);
}

.project-card h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.project-card img {
  width: 100%;
  border-radius: 6px;
  margin-bottom: 0.75rem;
}

.wrapper > section {
  max-width: none;
}

@media screen and (max-width: 1400px) {
  .wrapper {
    max-width: 95%;
    width: 95%;
  }
  
  .portfolio-grid {
    flex-wrap: wrap;
  }
  
  .portfolio-section {
    flex: 1 1 calc(50% - 1rem);
    min-width: 300px;
  }
}

@media screen and (max-width: 768px) {
  .wrapper {
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    padding: 10px;
  }
  
  header {
    position: relative;
    height: auto;
    width: auto;
    flex: none;
    margin-bottom: 2rem;
  }

  .portfolio-grid {
    flex-direction: column;
  }
  
  .portfolio-section {
    flex: none;
    width: auto;
  }
}