/* GENERAL */

body {
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  max-width: 900px;
  margin: auto;
  padding: 40px;
  line-height: 1.6;
  color: #222;
}


/* NAVIGATION */

nav {
  margin-bottom: 60px;
}

nav a {
  margin-right: 20px;
  text-decoration: none;
  color: #444;
  font-weight: 500;
  transition: color .2s ease;
}

nav a:hover {
  color: #000;
}


/* HERO SECTION */

.hero {
  position: relative;
  margin-bottom: 80px;
}

.hero-text {
  position: relative;
  z-index: 2;
}

h1 {
  font-size: 46px;
  margin-bottom: 15px;
  letter-spacing: -0.5px;
}

.intro {
  font-size: 18px;
  max-width: 560px;
  margin-bottom: 15px;
}


/* BRAIN IMAGE */

.brain {
  position: absolute;
  right: -40px;
  top: -20px;
  width: 320px;
  opacity: 0.9;
  filter: drop-shadow(0 20px 30px rgba(0,0,0,0.15));
  transition: transform .6s ease;
}

.hero:hover .brain {
  transform: rotate(6deg) scale(1.03);
}


/* CV BUTTON */

.cv-button {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 18px;
  border: 1px solid #222;
  text-decoration: none;
  color: #222;
  font-weight: 500;
  transition: all .2s ease;
}

.cv-button:hover {
  background: #222;
  color: white;
}


/* RESEARCH PREVIEW */

.research-preview {
  margin-top: 40px;
}

h2 {
  margin-bottom: 25px;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.research-card {
  border: 1px solid #eee;
  padding: 20px;
  transition: transform .2s ease, box-shadow .2s ease;
}

.research-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}

.research-card h3 {
  margin-top: 0;
}