:root {
  --amazon-orange: #FF9900;
  --amazon-blue: #146EB4;
  --dark: #232F3E;
  --text: #111827;
  --light: #F9FAFB;
  --grey: #6B7280;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: var(--light);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  background: var(--dark);
  color: white;
  padding: 1.2rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

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

h1 {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 700;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 500;
  transition: color 0.2s;
}

nav a:hover {
  color: var(--amazon-orange);
}

.hero {
  background: linear-gradient(135deg, var(--amazon-blue) 0%, #0F5A9C 100%);
  color: white;
  text-align: center;
  padding: 7rem 1rem 6rem;
}

.hero h2 {
  font-size: 3.2rem;
  margin: 0 0 1.2rem;
  line-height: 1.1;
}

.hero p {
  font-size: 1.3rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}

.btn {
  display: inline-block;
  background: var(--amazon-orange);
  color: #111827;
  padding: 1rem 2.2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(255,153,0,0.3);
}

.btn:hover {
  background: #FFB84D;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255,153,0,0.4);
}

.section {
  padding: 6rem 0;
}

h2 {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: 2.5rem;
  color: var(--dark);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: white;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transition: all 0.3s;
  border-top: 4px solid transparent;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.12);
  border-top: 4px solid var(--amazon-orange);
}

.card h3 {
  color: var(--amazon-blue);
  margin-top: 0;
}

.about {
  background: #fff;
}

.contact {
  background: var(--dark);
  color: white;
}

.contact h2, .contact p { color: white; }

form {
  max-width: 600px;
  margin: 2rem auto 0;
}

input, textarea {
  width: 100%;
  padding: 1rem;
  margin: 0.8rem 0;
  border: 1px solid #4B5563;
  border-radius: 6px;
  font-size: 1rem;
  background: #374151;
  color: white;
}

input::placeholder, textarea::placeholder { color: #9CA3AF; }

footer {
  background: var(--dark);
  color: #D1D5DB;
  text-align: center;
  padding: 2.5rem 0;
}

footer a { color: var(--amazon-orange); text-decoration: none; }

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

/* Mobile tweaks */
@media (max-width: 768px) {
  .hero { padding: 5rem 1rem 4rem; }
  .hero h2 { font-size: 2.5rem; }
  header .container { flex-direction: column; gap: 1rem; }
  nav a { margin: 0 1rem; font-size: 0.95rem; }
}