/* AB Byggentreprenad – main styles */
:root {
  --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --color-green: #2d5a3d;
  --color-wood: #8b6914;
  --color-wood-light: #a67c1a;
  --color-wood-bg: #f5efe6;
  --color-cream: #faf8f5;
  --color-text: #333;
  --color-text-muted: #666;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --container: min(90vw, 1100px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-cream);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-green); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--color-wood); outline-offset: 2px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--space-md); }
.section { padding: var(--space-2xl) 0; }
.section-title { font-family: var(--font-heading); font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 var(--space-sm); color: var(--color-green); }
.section-intro { margin: 0 0 var(--space-lg); color: var(--color-text-muted); max-width: 60ch; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

.btn { display: inline-block; padding: var(--space-sm) var(--space-lg); font-size: 1rem; font-weight: 600; border: none; border-radius: 4px; cursor: pointer; transition: opacity 0.2s; }
.btn:hover { opacity: 0.9; }
.btn-primary { background: var(--color-green); color: var(--color-cream); }

#hero, #services, #portfolio, #contact { scroll-margin-top: 5rem; }

/* Header */
.header { position: sticky; top: 0; z-index: 100; background: var(--color-green); box-shadow: 0 4px 0 0 var(--color-green); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: var(--space-md) var(--space-lg); }
.logo { display: flex; align-items: center; }
.logo-img { height: 40px; width: auto; }
.header .logo-img { filter: brightness(0) invert(1); }
.nav-toggle { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--color-cream); }
.nav { display: flex; align-items: center; gap: var(--space-lg); flex-wrap: nowrap; }
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-lg); align-items: center; }
.nav-link { color: var(--color-cream); font-weight: 500; }
.nav-link:hover { color: #fff; text-decoration: none; }
.lang-switch { display: flex; align-items: center; flex-shrink: 0; }
.lang-select {
  padding: var(--space-xs) 1.25rem var(--space-xs) 0;
  background-color: var(--color-green);
  border: none;
  color: var(--color-cream);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23faf8f5' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
  accent-color: var(--color-green);
}
.lang-select:hover { color: #fff; }
.lang-select:focus { outline: 2px solid var(--color-cream); outline-offset: 2px; }
.lang-select option {
  background-color: var(--color-green);
  color: var(--color-cream);
}
.lang-select optgroup {
  background-color: var(--color-green);
  color: var(--color-cream);
}
@media (max-width: 767px) {
  .nav { display: none; flex-wrap: wrap; }
  .nav.is-open { display: flex; flex-direction: column; align-items: flex-start; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-green); padding: var(--space-md); }
  .nav.is-open .nav-list { flex-direction: column; align-items: flex-start; }
}
@media (min-width: 768px) {
  .nav-toggle { display: none; }
}

/* Hero – gradient starts at navbar and fades down */
.hero {
  padding: var(--space-2xl) 0 var(--space-2xl);
  text-align: center;
  background: linear-gradient(to bottom, var(--color-wood-bg) 0%, var(--color-cream) 50%, #fff 100%);
}
.hero-content { max-width: 52ch; margin: 0 auto; }
.hero-tagline { font-family: var(--font-heading); font-size: clamp(1.25rem, 2.5vw, 1.5rem); color: var(--color-wood); margin: 0 0 var(--space-sm); }
.hero-description { font-size: clamp(1rem, 2vw, 1.125rem); margin: 0 auto var(--space-sm); color: var(--color-text); }
.hero-area { margin: 0 0 var(--space-lg); font-weight: 600; color: var(--color-wood); }
.hero .btn { margin-top: var(--space-xs); }

/* Showcase (mosaic) section */
.showcase { padding: 0; background: #fff; }
.showcase .container { padding-bottom: var(--space-lg); }
.showcase-mosaic {
  width: 100%;
  height: 45vh; min-height: 280px; max-height: 55vh;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: repeat(3, minmax(0, 1fr));
  gap: 0;
  background: var(--color-cream);
}
.showcase-mosaic-img {
  width: 100%; height: 100%;
  min-width: 0; min-height: 0;
  object-fit: cover;
  display: block;
  background: var(--color-cream);
  box-shadow: inset 0 0 0 4px var(--color-green);
}
.showcase-mosaic-1 { grid-column: 1 / 3; grid-row: 1 / 2; }
.showcase-mosaic-2 { grid-column: 3 / 5; grid-row: 1 / 3; }
.showcase-mosaic-3 { grid-column: 1 / 2; grid-row: 2 / 4; }
.showcase-mosaic-4 { grid-column: 2 / 4; grid-row: 2 / 4; }
.showcase-mosaic-5 { grid-column: 4 / 5; grid-row: 3 / 4; }
@media (min-width: 768px) {
  .showcase-mosaic { height: 50vh; max-height: 55vh; }
}
@media (max-width: 480px) {
  .showcase-mosaic { height: 35vh; min-height: 220px; max-height: 40vh; }
}

/* Services */
.services { background: #fff; padding: 7rem 0; }
.services .section-intro { margin-bottom: var(--space-xl); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-xl); }
.service-card { padding: var(--space-xl); min-height: 160px; background: var(--color-cream); border: 1px solid var(--color-wood-bg); border-radius: 8px; }
.service-card h3 { margin: 0 0 var(--space-sm); font-size: 1.125rem; color: var(--color-green); }
.service-card p { margin: 0; font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.6; }
.service-card:hover { border-color: var(--color-wood); box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.services-footer { margin: var(--space-2xl) 0 0; font-size: 1.2rem; color: var(--color-wood); font-weight: 500; text-align: center; max-width: 42ch; margin-left: auto; margin-right: auto; line-height: 1.5; }
.services-footer .services-footer-link { color: var(--color-wood); font-weight: 600; text-decoration: none; }
.services-footer .services-footer-link:hover { color: var(--color-wood-light); text-decoration: underline; }

/* Portfolio carousels */
.portfolio { background: var(--color-wood-bg); }
.portfolio-carousels { display: flex; flex-direction: column; gap: var(--space-xl); }
@media (min-width: 768px) {
  .portfolio-carousels { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
}
.portfolio-carousel { max-width: 360px; margin: 0 auto; }
.portfolio-carousel-title { font-size: 1.1rem; margin: 0 0 var(--space-sm); color: var(--color-green); padding-top: var(--space-sm); }
.portfolio-carousel-track-wrap { overflow: hidden; border-radius: 8px; }
.portfolio-carousel-track { display: flex; transition: transform 0.3s ease; }
.portfolio-carousel-slide { flex: 0 0 100%; aspect-ratio: 4 / 3; cursor: pointer; }
.portfolio-carousel-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.portfolio-carousel-nav { display: flex; justify-content: center; gap: var(--space-md); margin-top: var(--space-sm); }
.portfolio-carousel-nav button { padding: var(--space-xs) var(--space-md); background: var(--color-green); color: var(--color-cream); border: none; border-radius: 4px; cursor: pointer; }
.portfolio-carousel-dots { display: flex; justify-content: center; gap: var(--space-xs); margin-top: var(--space-sm); }
.portfolio-carousel-dots button { width: 8px; height: 8px; border-radius: 50%; border: none; background: var(--color-wood-bg); cursor: pointer; padding: 0; }
.portfolio-carousel-dots button.is-active { background: var(--color-green); }

/* Contact */
.contact { background: #fff; }
.contact-grid { display: grid; gap: var(--space-xl); align-items: start; }
@media (min-width: 600px) { .contact-grid { grid-template-columns: 1fr 1.5fr; } }
.contact-primary .section-intro { margin-bottom: var(--space-lg); }
.contact-info p { margin: 0 0 var(--space-sm); }
.contact-link { font-weight: 500; }
.contact-social { display: flex; gap: var(--space-md); margin-top: var(--space-lg); }
.contact-social-link { display: inline-flex; color: var(--color-green); transition: color 0.2s, transform 0.2s; }
.contact-social-link:hover { color: var(--color-wood); transform: scale(1.1); }
.contact-social-icon { width: 28px; height: 28px; }
.contact-form { display: flex; flex-direction: column; gap: var(--space-md); max-width: 400px; }
.contact-form input, .contact-form textarea { padding: var(--space-sm); border: 1px solid var(--color-wood-bg); border-radius: 4px; font-family: inherit; font-size: 1rem; }
.contact-form textarea { resize: vertical; min-height: 100px; }

/* Footer */
.footer { padding: var(--space-lg) 0; background: var(--color-green); color: var(--color-cream); text-align: center; }
.footer a { color: var(--color-cream); }
.footer-rights { margin: 0; font-size: 0.875rem; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: var(--space-md); visibility: hidden; opacity: 0; transition: opacity 0.2s, visibility 0.2s; }
.lightbox[hidden] { display: none; }
.lightbox.is-open { visibility: visible; opacity: 1; }
.lightbox-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.85); cursor: pointer; }
.lightbox-inner { position: relative; display: flex; flex-direction: column; align-items: center; cursor: default; pointer-events: auto; }
.lightbox-img { max-width: 90vw; max-height: 85vh; object-fit: contain; }
.lightbox-close { position: absolute; top: -2.5rem; right: 0; background: none; border: none; color: #fff; font-size: 2rem; cursor: pointer; line-height: 1; padding: 0; }
.lightbox-prev, .lightbox-next { position: absolute; top: 50%; transform: translateY(-50%); background: var(--color-green); color: #fff; border: none; width: 44px; height: 44px; border-radius: 50%; font-size: 1.5rem; cursor: pointer; line-height: 1; padding: 0; }
.lightbox-prev { left: -2rem; }
.lightbox-next { right: -2rem; }
.lightbox-dots { display: flex; gap: var(--space-xs); margin-top: var(--space-md); }
.lightbox-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: rgba(255,255,255,0.4); cursor: pointer; padding: 0; }
.lightbox-dots button.is-active { background: #fff; }