* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2937;
  background: #f8fafc;
  line-height: 1.6;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 8%;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e5e7eb;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-weight: 700;
  font-size: 20px;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #374151;
  font-weight: 600;
  transition: 0.2s ease;
}

nav a:hover {
  color: #2563eb;
}

.hero {
  padding: 110px 8%;
  background: linear-gradient(135deg, #1e3a8a, #2563eb, #10b981);
  color: white;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 13px;
  color: #dbeafe;
}

.hero h1 {
  max-width: 900px;
  font-size: 58px;
  line-height: 1.05;
  margin: 14px 0 22px;
}

.subtitle {
  max-width: 760px;
  font-size: 22px;
  color: #e5e7eb;
}

.buttons {
  margin-top: 35px;
}

.button {
  display: inline-block;
  padding: 14px 24px;
  border-radius: 10px;
  margin-right: 14px;
  text-decoration: none;
  font-weight: 700;
  transition: 0.25s ease;
}

.primary {
  background: white;
  color: #111827;
}

.primary:hover {
  transform: translateY(-2px);
}

.secondary {
  border: 1px solid white;
  color: white;
}

.secondary:hover {
  background: rgba(255,255,255,0.12);
}

.stats {
  display: flex;
  gap: 22px;
  margin-top: 60px;
  flex-wrap: wrap;
}

.stat-card {
  background: rgba(255,255,255,0.12);
  padding: 24px;
  border-radius: 16px;
  backdrop-filter: blur(10px);
  flex: 1;
  min-width: 240px;
}

.stat-card h3 {
  margin-top: 0;
  color: white;
}

.stat-card p {
  color: #e5e7eb;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 8%;
}

section {
  margin-bottom: 90px;
}

h2 {
  font-size: 38px;
  margin-bottom: 12px;
}

.section-intro {
  color: #4b5563;
  margin-bottom: 32px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.card {
  background: white;
  padding: 30px;
  border-radius: 18px;
  border: 1px solid #dbeafe;
  box-shadow: 0 12px 28px rgba(0,0,0,0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 38px rgba(0,0,0,0.12);
}

.card h3 {
  margin-top: 0;
  font-size: 22px;
}

.card a {
  color: #2563eb;
  font-weight: 700;
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

#contact a {
  color: #2563eb;
}

footer {
  text-align: center;
  padding: 34px;
  color: #6b7280;
  background: white;
  border-top: 1px solid #e5e7eb;
}

@media (max-width: 900px) {
  .hero h1 {
    font-size: 44px;
  }

  .subtitle {
    font-size: 20px;
  }
}

@media (max-width: 700px) {

  nav {
    display: block;
  }

  nav a {
    display: inline-block;
    margin: 12px 14px 0 0;
  }

  .hero {
    padding: 80px 8%;
  }

  .hero h1 {
    font-size: 36px;
  }

  .subtitle {
    font-size: 18px;
  }
}