/* Reset & root styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell,
    "Open Sans", "Helvetica Neue", sans-serif;
  line-height: 1.5;
  color: #222;
  background-color: #fff;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Header */
.site-header {
  background: #0d0d0d;
  color: #fff;
  padding: 1rem 0;
}

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

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

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

.nav-list a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

/* Hero */
.hero {
  background: #f7f7f7;
  padding: 5rem 0 6rem;
  text-align: center;
}

.hero-title {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: #555;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
}

/* Content section */
.content-section {
  padding: 3.5rem 0;
}

.content-section h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.content-section ul {
  margin: 1rem auto 0;
  list-style: disc inside;
  max-width: 480px;
  text-align: left;
}

/* Gallery */
.gallery {
  background: #fafafa;
  padding: 3.5rem 0;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  justify-items: center;
}

/* Footer */
.site-footer {
  background: #0d0d0d;
  color: #fff;
  text-align: center;
  padding: 1.5rem 0;
}

/* Hidden email anchor */
.hidden-email {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* Utility: hide element visually but keep for screen readers & crawlers */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Centered section containers */
.content-section .container,
.gallery .container {
  text-align: center;
  max-width: 760px;
}

@media (max-width: 600px) {
  .hero {
    padding: 3.5rem 0 4rem;
  }

  .hero-title {
    font-size: 1.625rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .btn-primary {
    padding: 0.625rem 1.25rem;
  }

  .nav-list {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .content-section,
  .gallery {
    padding: 2.25rem 0;
  }

  .image-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}