/* ========================================
   HOME — MATERIAL FAMILIES SECTION
   Vertical tab list (left) + detail panel (right).
   Enqueued after main style.
======================================== */

.home-material-families {
  padding: 4rem 0;
  background: #fff;
}

/* ---- Section head ---- */
.home-material-families .hmf-eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  color: #c8861d;
  margin-bottom: 0.6rem;
}

.home-material-families .hmf-eyebrow::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 2px;
  background: #c8861d;
  vertical-align: middle;
  margin-right: 0.6rem;
}

.home-material-families .hmf-heading {
  color: var(--blue);
  font-weight: 700;
  font-size: 2.1rem;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

.home-material-families .hmf-desc {
  color: var(--text-gray);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: 620px;
  margin: 0 0 2.5rem;
}

/* ---- Tabs layout ---- */
.home-material-families .hmf-tabs {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  border: 1px solid #e3e6ee;
  border-radius: 6px;
  overflow: hidden;
  background: #f5f7fc;
}

/* ---- Left tab list ---- */
.home-material-families .hmf-tablist {
  margin: 0;
  background: #f5f7fc;
  border-right: 1px solid #e3e6ee;
}

.home-material-families .hmf-tablist li + li .hmf-tab {
  border-top: 1px solid #e3e6ee;
}

.home-material-families .hmf-tab {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  border-left: 3px solid transparent;
  padding: 1.4rem 1.5rem;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.home-material-families .hmf-tab:hover {
  background: #eef1f7;
}

.home-material-families .hmf-tab.is-active {
  background: #fff;
  border-left-color: #c8861d;
}

.home-material-families .hmf-tab-name {
  display: block;
  color: var(--blue);
  font-weight: 700;
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.home-material-families .hmf-tab-sub {
  display: block;
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.7rem;
  font-weight: 600;
  margin: 0.45rem 0 0.6rem;
}

.home-material-families .hmf-tab-chip {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--blue);
  border: 1px solid #cdd6ea;
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
  background: #fff;
}

/* ---- Right panel ---- */
.home-material-families .hmf-panels {
  padding: 2.25rem 2.25rem 2.5rem;
}

.home-material-families .hmf-panel[hidden] {
  display: none;
}

.home-material-families .hmf-panel-heading {
  color: var(--blue);
  font-weight: 700;
  font-size: 1.85rem;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
}

.home-material-families .hmf-panel-sub {
  color: #c8861d;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.8rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
}

.home-material-families .hmf-panel-desc {
  color: var(--text-gray);
  font-size: 0.92rem;
  line-height: 1.65;
  margin: 0 0 1.75rem;
  max-width: 760px;
}

/* ---- Stat boxes ---- */
.home-material-families .hmf-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid #e3e6ee;
  background: #f8fafd;
  border-radius: 5px;
  margin-bottom: 1.75rem;
}

.home-material-families .hmf-stat {
  padding: 1.25rem 1.4rem;
}

.home-material-families .hmf-stat + .hmf-stat {
  border-left: 1px solid #e3e6ee;
}

.home-material-families .hmf-stat-value {
  display: block;
  color: var(--blue);
  font-weight: 700;
  font-size: 1.6rem;
  line-height: 1.1;
}

.home-material-families .hmf-stat-label {
  display: block;
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.68rem;
  font-weight: 600;
  margin-top: 0.4rem;
}

/* ---- Available grades ---- */
.home-material-families .hmf-grades-label {
  display: block;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.home-material-families .hmf-grade-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
}

.home-material-families .hmf-grade-item {
  margin: 0;
}

.home-material-families .hmf-grade {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  border: 1px solid #cdd6ea;
  border-radius: 4px;
  padding: 0.5rem 0.85rem;
  background: #f5f7fc;
}

/* Clickable grade chip */
.home-material-families .hmf-grade--link {
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.home-material-families .hmf-grade--link:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.home-material-families .hmf-grade--link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ---- Responsive ---- */
@media screen and (max-width: 820px) {
  .home-material-families .hmf-tabs {
    grid-template-columns: 1fr;
  }
  .home-material-families .hmf-tablist {
    border-right: 0;
    border-bottom: 1px solid #e3e6ee;
    display: flex;
    overflow-x: auto;
  }
  .home-material-families .hmf-tablist li {
    flex: 1 0 auto;
  }
  .home-material-families .hmf-tablist li + li .hmf-tab {
    border-top: 0;
    border-left: 1px solid #e3e6ee;
  }
  .home-material-families .hmf-tab.is-active {
    border-left-color: transparent;
    border-bottom: 3px solid #c8861d;
  }
}

@media screen and (max-width: 520px) {
  .home-material-families {
    padding: 2.75rem 0;
  }
  .home-material-families .hmf-heading {
    font-size: 1.6rem;
  }
  .home-material-families .hmf-panels {
    padding: 1.5rem;
  }
  .home-material-families .hmf-stats {
    grid-template-columns: 1fr;
  }
  .home-material-families .hmf-stat + .hmf-stat {
    border-left: 0;
    border-top: 1px solid #e3e6ee;
  }
}