:root {
  --primary: #2c3e50;
  --accent: #3498db;
  --light: #f8f9fa;
  --text: #333;
  --gray: #7f8c8d;
}

/* ===== Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--light);
  color: var(--text);
  line-height: 1.6;
}

/* ===== Header/Navigation ===== */
header {
  background-color: var(--primary);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
}

nav ul li {
  margin: 0 1.5rem;
}

nav ul li a {
  color: #ecf0f1;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

nav ul li a:hover {
  color: var(--accent);
}

/* ===== Sections ===== */
section {
  padding: 4rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

section:nth-child(even) {
  background-color: white;
}

/* ===== Home Section ===== */
#home {
  text-align: center;
}

#home img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent);
  margin-bottom: 1.5rem;
}

#home h1 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

#home p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* ===== About Section ===== */
#about h3 {
  color: var(--primary);
  margin: 1.5rem 0 1rem;
}

#about ul {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
}

#about li {
  margin-bottom: 0.5rem;
}

.cv-button {
  display: inline-block;
  background-color: var(--accent);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.cv-button:hover {
  background-color: #2980b9;
  transform: translateY(-2px);
}

/* ===== Projects Section ===== */
#projects article {
  background: #f0f8ff;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#projects h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

#projects p i {
  font-style: italic;
  color: var(--gray);
  font-size: 0.95rem;
  display: block;
  margin-bottom: 1rem;
}

#projects ul {
  margin-left: 1.5rem;
}

#projects li {
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

#projects li i {
  font-style: italic;
}

/* ===== Contact Section ===== */
#contact {
  padding: 2rem;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

#contact ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

#contact li {
  margin: 0.5rem 0;
}

#contact a {
  color: var(--primary);
  text-decoration: none;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

#contact a:hover {
  color: var(--accent);
  text-decoration: underline;
  transform: translateY(-2px);
}

#contact i {
  width: 24px;
  margin-right: 8px;
  color: var(--accent);
}

/* ===== Footer ===== */
footer {
  background-color: var(--primary);
  color: #ecf0f1;
  text-align: center;
  padding: 2rem 0;
  margin-top: 2rem;
}

footer p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

/* ===== Accessibility ===== */
a:focus,
button:focus {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  section {
    padding: 3rem 1.5rem;
  }

  nav ul {
    flex-direction: column;
    align-items: center;
  }

  nav ul li {
    margin: 0.5rem 0;
  }

  #home h1 {
    font-size: 2rem;
  }
}