:root {
  --mint-green: #e6f4ea;
  --sky-blue: #b3e5fc;
  --forest-green: #1a4d2e;
  --white: #ffffff;
  --accent-green: #009b63;
  --dark-text: #1c1c1c;
}

/* Hero Section */
.hero-control {
  background: linear-gradient(to right, var(--mint-green), var(--sky-blue));
  padding: 6rem 2rem 4rem;
  text-align: center;
}

.hero-control h1 {
  font-size: 2.8rem;
  color: var(--forest-green);
  margin-bottom: 1rem;
}

.hero-control p {
  font-size: 1.2rem;
  color: #2e5b4c;
  max-width: 800px;
  margin: 0 auto;
}

/* Details Section */
.details-section {
  background: var(--white);
  padding: 4rem 2rem;
  color: var(--dark-text);
  text-align: center;
}

.details-section h2 {
  color: var(--forest-green);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.details-section ul {
  text-align: left;
  max-width: 800px;
  margin: 1rem auto;
  line-height: 1.6;
  color: #333;
  padding-left: 1.5rem;
}

.details-section li {
  margin-bottom: 0.5rem;
}

/* Tech Stack Grid */
.tech-stack {
  background: var(--mint-green);
  padding: 4rem 2rem;
  text-align: center;
}

.tech-stack h2 {
  color: var(--forest-green);
  font-size: 2rem;
  margin-bottom: 2rem;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.stack-card {
  background: var(--white);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.stack-card:hover {
  transform: translateY(-5px);
}

.stack-card i {
  font-size: 1.8rem;
  color: var(--accent-green);
  margin-bottom: 0.5rem;
}

.stack-card span {
  display: block;
  font-weight: 600;
  color: #2e5b4c;
}

/* CTA Section */
.cta-section {
  padding: 4rem 2rem;
  background-color: var(--sky-blue);
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  color: var(--forest-green);
  margin-bottom: 1rem;
}

.learn-btn {
  background-color: var(--accent-green);
  color: var(--white);
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.3s ease;
}

.learn-btn:hover {
  background-color: #007a50;
}