:root {
  --primary: #0b6efd;
  --dark: #0c1b33;
  --light: #f5f7fa;
  --gray: #6c757d;
  --overlay: rgba(12, 27, 51, 0.65);
}

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

body {
  font-family: 'Poppins', sans-serif;
  color: var(--dark);
  background: var(--light);
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* Header */
.header {
  background: var(--dark);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 999;
}

.logo {
  color: #fff;
  font-weight: 600;
  font-size: 1.5rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.nav-links a:hover,
.nav-links a:focus {
  opacity: 0.8;
}

.cta {
  padding: 0.4rem 1rem;
  background: var(--primary);
  border-radius: 4px;
}

/* Hero */
.hero {
  position: relative;
  background: url('https://images.unsplash.com/photo-1556761175-4b46a572b786?auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
  color: #fff;
  text-align: center;
  padding: 6rem 0 7rem;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--overlay);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-content .highlight {
  color: var(--primary);
}

.hero-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: #0958c7;
}

/* About */
.about {
  background: #fff;
  padding: 3rem 0;
}

.about-content p {
  max-width: 800px;
  margin: auto;
  text-align: center;
  color: var(--gray);
}

/* Services */
.services {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 2.5rem;
  font-size: 2rem;
  color: var(--dark);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.card {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.card h3 {
  margin-bottom: 0.8rem;
  font-size: 1.25rem;
}

.card p {
  color: var(--gray);
  font-size: 0.95rem;
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

/* Footer */
.footer {
  background: var(--dark);
  color: #fff;
  padding: 1.5rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.whatsapp-link {
  color: #25d366;
  text-decoration: none;
  font-weight: 600;
}

@media (min-width: 768px) {
  .hero-content h2 {
    font-size: 3rem;
  }
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}