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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  padding: 15px 0;
  position: fixed;
  width: 100%;
  top: 0;
  background: white;
  z-index: 100;
  transition: box-shadow 0.3s ease;
}

header.scrolled {
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: #2d5a27;
  text-decoration: none;
}

.logo img {
  height: 125px;
  width: auto;
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  margin-bottom: -50px;
  position: relative;
  z-index: 101;
}

.btn {
  background: #2d5a27;
  color: white;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: #234620;
  transform: translateY(-1px);
}

/* Sections */
section, footer {
  padding: 80px 0;
}

#hero {
  padding-top: 120px;
  background: white;
  text-align: center;
}

.hero-image-wrapper {
  overflow: hidden;
  max-height: 600px;
  margin-bottom: 40px;
}

.hero-image {
  width: 100%;
  height: 700px;
  object-fit: cover;
  will-change: transform;
}

#hero h1 {
  font-size: 2rem;
  color: #2d5a27;
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.tagline {
  font-size: 1.25rem;
  color: #555;
}

h2 {
  font-size: 1.75rem;
  color: #2d5a27;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

p {
  margin-bottom: 15px;
}

p:last-child {
  margin-bottom: 0;
}

/* Skills */
.skills-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  list-style: none;
}

.skills-list li {
  background: #f5f9f4;
  padding: 15px 20px;
  border-radius: 5px;
  border-left: 4px solid #2d5a27;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skills-list li:hover {
  transform: translateX(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.step {
  text-align: center;
  transition: transform 0.2s ease;
}

.step:hover {
  transform: translateY(-4px);
}

.step-number {
  display: inline-block;
  width: 50px;
  height: 50px;
  line-height: 50px;
  background: #2d5a27;
  color: white;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 15px;
}

.step h3 {
  color: #2d5a27;
  margin-bottom: 10px;
}

/* Alternating backgrounds */
#philosophy, #diversity, #research, #quote {
  background: #f5f9f4;
}

/* Research citations */
.research-citations {
  margin-top: 40px;
}

.citation {
  background: white;
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 20px;
  border-left: 4px solid #2d5a27;
}

.citation h3 {
  color: #2d5a27;
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.citation ul {
  margin-left: 20px;
  margin-top: 10px;
}

.citation li {
  margin-bottom: 8px;
}

/* Quote section */
#quote {
  text-align: center;
  padding: 60px 0;
}

blockquote {
  font-size: 1.75rem;
  font-style: italic;
  color: #2d5a27;
}

/* Images */
.diversity-flag {
  width: 120px;
  margin-bottom: 20px;
}

.about-photo {
  width: 100%;
  max-width: 400px;
  border-radius: 10px;
  margin-bottom: 20px;
}

/* Footer */
footer {
  background: #2d5a27;
  color: white;
  text-align: center;
}

footer h2 {
  color: white;
}

footer a {
  color: white;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

footer a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.location, .hours {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.copyright {
  margin-top: 30px;
  opacity: 0.7;
  font-size: 0.9rem;
}

/* Mobile */
@media (max-width: 600px) {
  .logo img {
    height: 100px;
    margin-bottom: -40px;
  }

  .btn {
    font-size: 0.85rem;
    padding: 8px 12px;
  }

  #hero h1 {
    font-size: 1.75rem;
  }

  section, footer {
    padding: 60px 0;
  }
}