:root {
  --primary-color: #2d3436;
  --secondary-color: #0984e3;
  --text-color: #2d3436;
  --background-color: #ffffff;
  --accent-color: #00b894;
  
  --transition: all 0.3s ease;
  --border-radius: 4px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
}

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

/* Navigation */
nav {
  background-color: var(--background-color);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--secondary-color);
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
}

.hero-content {
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background-color: var(--accent-color);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Sections */
section {
  padding: 6rem 0;
}

h2 {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2.5rem;
  color: var(--primary-color);
}

/* Experience Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background-color: var(--secondary-color);
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.timeline-item {
  padding: 2rem 0;
  position: relative;
  width: 50%;
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-content {
  padding: 1.5rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: relative;
}

.timeline-content::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--secondary-color);
  border-radius: 50%;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
}

.timeline-item:nth-child(even) .timeline-content::after {
  left: -60px;
}

.timeline-content h3 {
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.timeline-content .date {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Contact Form */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

input,
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-family: inherit;
}

textarea {
  height: 150px;
  resize: vertical;
}

.submit-btn {
  background-color: var(--secondary-color);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.submit-btn:hover {
  background-color: var(--accent-color);
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: white;
  padding: 2rem 0;
  text-align: center;
}

/* Animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 1s ease-in forwards;
}

.fade-in-delay {
  opacity: 0;
  animation: fadeIn 1s ease-in forwards 0.3s;
}

.fade-in-delay-2 {
  opacity: 0;
  animation: fadeIn 1s ease-in forwards 0.6s;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .timeline::after {
    left: 31px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  
  .timeline-item:nth-child(even) {
    left: 0;
  }
  
  .timeline-content::after {
    left: -39px;
  }
  
  .timeline-item:nth-child(even) .timeline-content::after {
    left: -39px;
  }
}