/* ---------- Section rhythm ---------- */
.section { padding: 80px 0; }
.section--sm { padding: 48px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark {
  background-color: var(--color-text-strong);
  background-size: cover;
  background-position: center;
  color: #fff;
  position: relative;
}
.section--dark::before { content: ""; position: absolute; inset: 0; background: rgba(0,0,0,0.35); }
.section--dark .container { position: relative; }

/* ---------- Buttons ---------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 15px;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.button--primary { background: var(--color-primary); color: #fff; border: none; cursor: pointer; }
.button--primary:hover { background: var(--color-primary-dark); }
.button--primary:disabled { background: var(--color-text-muted); cursor: not-allowed; }
.button--outline-light { border: 1px solid rgba(255,255,255,0.6); color: #fff; }
.button--outline-light:hover { background: #fff; color: var(--color-primary); }

/* ---------- Home hero ---------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: #fff;
}
.hero::before { content: ""; position: absolute; inset: 0; background: rgba(0,0,0,0.25); }
.hero__content { position: relative; max-width: var(--container-width); margin: 0 auto; padding: 24px; }
.hero__eyebrow { font-size: 18px; margin-bottom: 20px; }
.hero__title { font-size: 38px; line-height: 1.25; color: #fff; margin-bottom: 28px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 600px) {
  .hero { min-height: 480px; }
  .hero__title { font-size: 26px; }
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-size: cover;
  background-position: center;
  color: #fff;
  position: relative;
}
.page-hero::before { content: ""; position: absolute; inset: 0; background: rgba(0,0,0,0.45); }
.page-hero__inner { position: relative; }
.page-hero__breadcrumb { display: block; font-size: 16px; color: #dde6f3; margin-bottom: 12px; }
.page-hero__title { font-size: 44px; color: #fff; }

@media (max-width: 600px) {
  .page-hero__title { font-size: 32px; }
}

/* ---------- Sub tabs ---------- */
.sub-tabs {
  border-bottom: 1px solid var(--color-border);
}
.sub-tabs__list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 32px;
}
.sub-tabs__list a {
  display: block;
  padding: 18px 4px;
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
}
.sub-tabs__list a.is-active,
.sub-tabs__list a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ---------- Prose (rich text blocks) ---------- */
.prose h2 { font-size: 40px; margin-bottom: 24px; }
.prose p { margin-bottom: 16px; color: var(--color-text-muted); font-size: 17px; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--color-text-strong); font-weight: 600; }

.section-title {
  font-size: 40px;
  text-align: left;
  margin-bottom: 32px;
}
.section-title--center { text-align: center; }

/* ---------- Link grid (home 3-up) ---------- */
.link-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.link-card {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}
.link-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.link-card:hover img { transform: scale(1.05); }
.link-card__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: #fff;
  font-weight: 600;
  font-size: 18px;
}

@media (max-width: 800px) {
  .link-grid { grid-template-columns: 1fr; }
}

/* ---------- Diagram blocks (billiard page) ---------- */
.diagram-block + .diagram-block { margin-top: 64px; }
.diagram-block__title { font-size: 32px; margin-bottom: 24px; }
.diagram-block img { margin: 0 auto; border: 1px solid var(--color-border); border-radius: var(--radius); }

/* ---------- Gallery / lightbox (proposal deck & installations) ---------- */
.gallery {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x proximity;
}
.gallery__item {
  flex: 0 0 auto;
  width: 220px;
  scroll-snap-align: start;
  cursor: zoom-in;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.gallery__item img { aspect-ratio: 3 / 4; object-fit: cover; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.9);
  padding: 24px;
}
.lightbox.is-open { display: flex; }
.lightbox__figure { max-width: 90vw; max-height: 85vh; text-align: center; }
.lightbox__figure img { max-width: 100%; max-height: 80vh; margin: 0 auto; }
.lightbox__caption { color: #fff; margin-top: 16px; font-size: 15px; }
.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  color: #fff;
  font-size: 28px;
  padding: 12px;
  line-height: 1;
}
.lightbox__close { top: 16px; right: 24px; }
.lightbox__prev { left: 16px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 16px; top: 50%; transform: translateY(-50%); }

/* ---------- Installation cases (photofolio) ---------- */
.install-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
.install-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
}
.install-card__photo { cursor: zoom-in; border-radius: var(--radius); overflow: hidden; }
.install-card__photo img { aspect-ratio: 4 / 7; object-fit: cover; }
.install-card__name { font-size: 22px; margin-bottom: 12px; color: var(--color-text-strong); }
.install-card__meta { list-style: none; font-size: 15px; color: var(--color-text-muted); }
.install-card__meta li { margin-bottom: 6px; }
.install-card__meta li::before { content: "• "; color: var(--color-primary); }

.install-cta {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}
.install-cta h3 { font-size: 26px; margin-bottom: 12px; }
.install-cta p { color: var(--color-text-muted); margin-bottom: 24px; }

@media (max-width: 800px) {
  .install-grid { grid-template-columns: 1fr; }
  .install-card { grid-template-columns: 140px 1fr; }
}

/* ---------- Location / map ---------- */
.location-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.location-info dt { font-weight: 700; color: var(--color-primary); font-size: 18px; margin-top: 24px; }
.location-info dt:first-child { margin-top: 0; }
.location-info dd { margin: 8px 0 0; color: var(--color-text-muted); font-size: 16px; }
#map { width: 100%; height: 439px; border-radius: var(--radius); background: #eee; }

@media (max-width: 800px) {
  .location-grid { grid-template-columns: 1fr; }
}

/* ---------- Contact form ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-lede { font-size: 24px; line-height: 1.5; color: var(--color-text-strong); margin-top: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 15px; }
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 15px;
}
.form-control:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }
.form-feedback { margin-top: 16px; font-size: 14px; display: none; }
.form-feedback.is-visible { display: block; }
.form-feedback--success { color: #1c7c3c; }
.form-feedback--error { color: #c0392b; }
.form-feedback--pending { color: var(--color-text-muted); }

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}