/* === GLOBAL STYLES === */
:root {
  --bg-dark: #16291c;
  --bg-light: #1f3a27;
  --accent-green: #5bf59d;
  --accent-blue: #b0b8ff;
  --text-main: #e6ede6;
  --text-muted: #aab5a9;
  --card-bg: #111c14;
}

/* === BASE === */
body {
  margin: 0;
  padding: 2rem;
  font-family: "Inter", "Helvetica Neue", sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  box-sizing: border-box;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.3s;
}
a:hover {
  color: var(--accent-green);
}

/* === HEADER === */
header {
  background-color: var(--bg-light);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  flex-wrap: wrap;
}

header h1 {
  color: var(--accent-green);
  margin: 0;
  font-size: 1.8rem;
  letter-spacing: 0.5px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}
nav a {
  color: var(--text-main);
  font-weight: 600;
}
nav a:hover {
  color: var(--accent-green);
}

/* === MAIN CONTENT === */
main {
  max-width: 900px;
  margin: 2.5rem auto;
  padding: 0 1rem;
}

h2, h3 {
  color: var(--accent-green);
  margin-top: 1.5rem;
}

p {
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

/* === CARDS / PROJECT BLOCKS === */
.card {
  background-color: var(--card-bg);
  border-radius: 18px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  border: 1px solid rgba(91, 245, 157, 0.2);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}
.card-title {
  color: var(--accent-blue);
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}
.card-subtitle {
  color: var(--text-main);
  font-weight: 600;
  font-size: 1rem;
}

/* === IMAGE / PORTRAIT === */
.portrait {
  position: absolute;
  top: 20px;
  right: 40px;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent-green);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  z-index: 10;
}

/* === LISTS === */
ul {
  margin-top: 1rem;
  margin-left: 1.5rem;
  color: var(--text-main);
}
li {
  margin: 0.3rem 0;
}

/* === FOOTER === */
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
  }

  header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }

  nav ul {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
  }

  .portrait {
    position: static;
    display: block;
    margin: 1.5rem auto;
    width: 180px;
    height: 180px;
  }

  main {
    margin: 1rem auto;
    padding: 0 0.5rem;
  }

  .card {
    padding: 1.2rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.3rem;
  }

  nav ul {
    gap: 0.5rem;
  }

  .portrait {
    width: 140px;
    height: 140px;
  }
}