/* ===========================================================
   MATERIALS — shared template for the material-education pages
   (Marble / Engineered Stone / Large-Format Porcelain / Quartzite /
   History of Stone). PILOT: built once here, reused by content swap
   on every future material page — keep additions here generic,
   not marble-specific.
   =========================================================== */

.material-hero {
  padding-top: calc(76px + var(--space-5));
  padding-bottom: var(--space-5);
}
.material-hero .eyebrow { color: var(--gold); }
.material-hero h1 { margin: var(--space-2) 0 var(--space-3); max-width: 800px; }
.material-hero .lead { font-size: 1.15rem; color: var(--travertine); max-width: 640px; }

.material-section { padding: var(--space-6) 0; }
.material-section--alt { background: var(--basalt-soft); }

.material-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}
.material-split--reverse { grid-template-columns: 1fr 1.1fr; }
.material-split--reverse > .material-photo { order: 1; }
.material-split--reverse > div:not(.material-photo) { order: 2; }

.material-section h2 { margin: var(--space-2) 0 var(--space-2); }
.material-section p { color: var(--travertine); margin-bottom: var(--space-2); }
.material-section p:last-child { margin-bottom: 0; }

@media (max-width: 860px) {
  .material-split,
  .material-split--reverse { grid-template-columns: 1fr; }
  .material-split--reverse > .material-photo { order: 0; }
}

/* .material-photo is shared by two states:
   1) A real photo — a <picture class="material-photo"> wrapping a
      <source webp> + <img jpg fallback>. The img fills the box via
      object-fit: cover and gets a plain finished border.
   2) A still-empty slot (.material-photo--empty) — the original
      labelled placeholder, using the site's own approved stone
      texture so it still reads as "part of the page" rather than a
      broken image icon, with a dashed border to signal "temporary". */
.material-photo {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(0,0,0,0.22);
  background-color: var(--novello-charcoal);
}
.material-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid rgba(165, 131, 63, 0.18);
  border-radius: inherit;
  box-sizing: border-box;
}
.material-photo--empty {
  border: 1px dashed rgba(165, 131, 63, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}
.material-photo--empty::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/img/backgrounds/novello-bg-03.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.4;
}
.material-photo--empty::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,8,7,0.35) 0%, rgba(8,8,7,0.6) 100%);
}
.material-photo--empty span {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--travertine);
  text-align: center;
  padding: 0 2em;
  line-height: 1.6;
}

/* ===== "What it's like to live with" (no image, just a wide read) ===== */
.material-section--feel { background: var(--basalt-soft); }
.material-feel-intro { max-width: 720px; margin: 0 auto; text-align: left; }
.material-feel-intro h2 { max-width: 100%; }

/* ===== CARE: etch vs stain pair ===== */
.material-care-lead { max-width: 700px; }
.material-etch-stain {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-5);
}
.material-es-card {
  background: linear-gradient(145deg, rgba(34,29,23,0.88), rgba(8,8,7,0.96));
  padding: var(--space-3);
  border: 1px solid var(--hairline);
}
.material-es-card .mono {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: var(--space-1);
  filter: brightness(calc(1 + var(--shimmer-strength, 0) * var(--shimmer-brightness-lift, 0.18))) saturate(calc(1 + var(--shimmer-strength, 0) * var(--shimmer-saturation-lift, 0.11)));
  text-shadow: 0 0 calc(var(--shimmer-strength, 0) * 9px) rgba(var(--shimmer-highlight-rgb), calc(var(--shimmer-strength, 0) * 0.60));
}
.material-es-card p { color: var(--travertine); font-size: 0.94rem; margin: 0; }

@media (max-width: 700px) {
  .material-etch-stain { grid-template-columns: 1fr; }
}

/* ===== CARE: do's grid (reuses the process-step look) ===== */
.material-care-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.material-care-item {
  border-left: 1px solid rgba(165, 131, 63, 0.25);
  padding-left: var(--space-2);
}
.material-care-item .step-mono {
  font-family: var(--font-mono);
  color: var(--gold);
  font-size: 0.8rem;
  display: block;
  margin-bottom: 0.6em;
  filter: brightness(calc(1 + var(--shimmer-strength, 0) * var(--shimmer-brightness-lift, 0.18))) saturate(calc(1 + var(--shimmer-strength, 0) * var(--shimmer-saturation-lift, 0.11)));
  text-shadow: 0 0 calc(var(--shimmer-strength, 0) * 9px) rgba(var(--shimmer-highlight-rgb), calc(var(--shimmer-strength, 0) * 0.60));
}
.material-care-item h4 { font-size: 1rem; margin-bottom: 0.4em; }
.material-care-item p { color: var(--travertine); font-size: 0.9rem; margin: 0; }

@media (max-width: 860px) {
  .material-care-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .material-care-grid { grid-template-columns: 1fr; }
}

/* ===== "What to do when..." Q&A ===== */
.material-section--qa { background: var(--basalt-soft); }
.material-qa-list {
  max-width: 780px;
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.material-qa-item { border-bottom: 1px solid var(--hairline); padding-bottom: var(--space-3); }
.material-qa-item:last-child { border-bottom: none; padding-bottom: 0; }
.material-qa-item h4 { font-family: var(--font-headline); font-style: italic; font-size: 1.15rem; margin-bottom: 0.4em; color: var(--gold-light); }
.material-qa-item p { color: var(--travertine); margin: 0; }

/* ===== "Explore the materials" links-out grid (History of Stone hub) ===== */
.material-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.material-link-card {
  display: block;
  background: linear-gradient(145deg, rgba(34,29,23,0.88), rgba(8,8,7,0.96));
  padding: var(--space-3);
  border: 1px solid var(--hairline);
  box-shadow: 0 18px 50px rgba(0,0,0,0.30);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}
.material-link-card:hover {
  border-color: rgba(165, 131, 63, 0.46);
  box-shadow: 0 18px 50px rgba(0,0,0,0.34), 0 0 26px var(--gold-glow);
  transform: translateY(-3px);
}
.material-link-card .mono {
  color: var(--gold);
  font-size: 0.72rem;
  filter: brightness(calc(1 + var(--shimmer-strength, 0) * var(--shimmer-brightness-lift, 0.18))) saturate(calc(1 + var(--shimmer-strength, 0) * var(--shimmer-saturation-lift, 0.11)));
  text-shadow: 0 0 calc(var(--shimmer-strength, 0) * 9px) rgba(var(--shimmer-highlight-rgb), calc(var(--shimmer-strength, 0) * 0.60));
}
.material-link-card h4 { margin: var(--space-1) 0 0.4em; font-size: 1.05rem; color: var(--limestone); }
.material-link-card p { color: var(--travertine); font-size: 0.88rem; margin: 0 0 0.8em; }
.material-link-card .pillar-link { margin-top: 0; }
.material-link-card:hover .pillar-link::after { transform: translateX(4px); }

@media (max-width: 860px) {
  .material-links-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .material-links-grid { grid-template-columns: 1fr; }
}