body {
  font-family: system-ui, -apple-system, sans-serif;
  background-color: #f4f7f5; /* Soft, light garden off-white/gray */
  color: #2d3748; /* Dark charcoal text for high readability */
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 20px; /* Adds breathing room top and bottom */
  line-height: 1.6;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh; /* Centers the content vertically on the screen */
  box-sizing: border-box;
}

.container {
  display: flex;
  flex-direction: column;
  gap: 32px;
  width: 100%;
}

header {
  text-align: center; /* Centers your header text */
}

h1 {
  font-size: 2.3rem;
  color: #16a34a; /* Vibrant garden green */
  margin-bottom: 8px;
}

.subtitle {
  color: #64748b;
  font-size: 1.1rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  justify-content: center;
}

.card {
  background: #ffffff; /* Crisp white cards */
  border: 1px solid #cbd5e1; /* Soft, clean border */
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05); /* Gentle shadow */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center; /* Centers text inside the cards */
}

.card h2 {
  font-size: 1.3rem;
  color: #1e293b;
  margin-top: 0;
  margin-bottom: 12px;
}

.card p {
  color: #475569;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  background-color: #16a34a;
  color: #ffffff;
  padding: 10px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  text-align: center;
  transition: background 0.2s;
}

.btn:hover {
  background-color: #15803d;
}

.btn.disabled {
  background-color: #e2e8f0;
  color: #94a3b8;
  pointer-events: none;
}

footer {
  text-align: center; /* Centers the footer */
  font-size: 0.85rem;
  color: #94a3b8;
  border-top: 1px solid #e2e8f0;
  padding-top: 16px;
}