:root {
  --bg: #f4f6f8;
  --text: #212121;
  --accent: #0066cc;
  --card: #ffffff;
  --shadow: 0 12px 24px rgba(0,0,0,0.08);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
}

.nav-toggle {
  display: none;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.8rem 1rem;
  border-radius: 0.4rem;
}

.main-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.main-nav a {
  text-decoration: none;
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 0.4rem;
  transition: background 0.2s;
}

.main-nav a:hover {
  background: rgba(0, 102, 204, 0.1);
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 4rem 2rem;
  min-height: 70vh;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 4vw, 4rem);
  margin-bottom: 1rem;
}

.hero-content p {
  max-width: 42rem;
  margin-bottom: 1.5rem;
}

.cta-button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 1rem 1.6rem;
  border-radius: 0.6rem;
  text-decoration: none;
}

.hero-image {
  min-height: 320px;
  background: linear-gradient(135deg, #0066cc 0%, #66b2ff 100%);
  border-radius: 1.2rem;
  box-shadow: var(--shadow);
}

.grid-layout {
  display: grid;
  gap: 1.5rem;
}

.features,
.services-grid {
  padding: 2rem;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
}

.page-content {
  padding: 2rem;
}

.feature-card,
.service-card,
.gallery-card {
  background: var(--card);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.callout {
  margin: 2rem;
  padding: 2rem;
  background: #fff;
  border-radius: 1.2rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.callout button {
  margin-top: 1rem;
  padding: 0.9rem 1.5rem;
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: 0.6rem;
  cursor: pointer;
}

.page-hero {
  margin-bottom: 2rem;
}

.page-hero h1 {
  font-size: 2.4rem;
  margin-bottom: 0.75rem;
}

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background: #fff;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.contact-form {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.contact-form label {
  display: block;
  margin-bottom: 1rem;
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid #ddd;
  border-radius: 0.8rem;
  margin-top: 0.5rem;
}

.contact-form button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 1rem 1.4rem;
  border-radius: 0.8rem;
  cursor: pointer;
}

.gallery-grid {
  padding: 2rem;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
}

.gallery-card {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  background: linear-gradient(135deg, #eef3ff, #d9e7ff);
  border-radius: 1rem;
}

.site-footer {
  text-align: center;
  padding: 1.5rem;
  background: #fff;
  border-top: 1px solid #e5e5e5;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .features,
  .services-grid,
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
  .two-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-toggle {
    display: inline-block;
    margin-top: 1rem;
  }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
  }
  .main-nav.open {
    display: flex;
  }
  .features,
  .services-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}