/* browse.css — styles for the vehicle hierarchy browser pages.
   Depends on theme.css for CSS variables.
   Owns: browse layout, breadcrumb, grid cards, part detail.
   Does NOT own: nav, footer, or mechanic-page styles. */

/* ── Layout ─────────────────────────────────────────────────────────────── */
.browse-main {
  padding-top: 60px; /* matches nav height */
  min-height: 100vh;
}

.browse-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px 16px 64px;
}

/* ── Breadcrumb — horizontal scroll on mobile ───────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 2px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 32px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  /* Horizontal scroll on small screens, no wrap */
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.breadcrumb::-webkit-scrollbar { display: none; }

.breadcrumb-item {
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
  padding: 4px 6px;
  border-radius: 3px;
  flex-shrink: 0;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
}
.breadcrumb-item:hover { color: var(--accent); }

.breadcrumb-sep {
  color: var(--fg-dim);
  padding: 0 2px;
  flex-shrink: 0;
}

.breadcrumb-current {
  color: var(--accent);
  flex-shrink: 0;
  padding: 4px 6px;
}

/* ── Page header ─────────────────────────────────────────────────────────── */
.browse-header {
  margin-bottom: 32px;
}

.browse-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.browse-title {
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 8px;
}

.browse-subtitle {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

/* ── Grid layouts — mobile-first, scale up ───────────────────────────────── */
.grid-makes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.grid-models {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.grid-years {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.grid-systems {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.grid-parts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  display: block;
  padding: 20px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
  /* Touch-friendly: min-height 44px achieved via padding */
  min-height: 64px;
  -webkit-tap-highlight-color: transparent;
}

.card:hover, .card:focus {
  border-color: var(--accent-dim);
  background: var(--bg-elevated);
}
.card:active { background: var(--bg-elevated); }

.card-make {
  padding: 28px 20px;
  text-align: center;
}

.card-make-initial {
  font-family: var(--mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 10px;
}

.card-make-name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-make-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-dim);
  margin-top: 6px;
}

.card-model-name {
  font-size: 0.95rem;
  font-weight: 600;
}

.card-model-arrow {
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-top: 4px;
}

.card-year {
  text-align: center;
  padding: 20px 12px;
}

.card-year-num {
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}

.card-system {
  padding: 24px 20px;
}

.card-system-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.card-system-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.card-system-desc {
  font-size: 0.82rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

.card-part {
  padding: 20px 16px;
}

.card-part-oem {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.card-part-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.card-part-desc {
  font-size: 0.82rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ── Part detail page ────────────────────────────────────────────────────── */
.part-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.part-detail-oem {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  display: inline-block;
  padding: 6px 14px;
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
}

.part-detail-name {
  font-size: clamp(1.4rem, 5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.part-detail-desc {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 28px;
}

.part-fitment-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.88rem;
  color: var(--fg-muted);
  margin-bottom: 8px;
  min-height: 44px;
}

.part-fitment-badge-check {
  color: var(--accent);
  font-weight: 700;
}

.part-detail-sidebar {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.sidebar-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.sidebar-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.88rem;
  min-height: 44px;
}
.sidebar-row:last-child { border-bottom: none; }

.sidebar-row-key { color: var(--fg-muted); }

.sidebar-row-val {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--fg);
  text-align: right;
}

/* ── 404 ─────────────────────────────────────────────────────────────────── */
.not-found {
  text-align: center;
  padding: 64px 0;
}

.not-found-code {
  font-family: var(--mono);
  font-size: 4rem;
  font-weight: 700;
  color: var(--fg-dim);
  line-height: 1;
  margin-bottom: 20px;
}

.not-found-msg {
  font-size: 1.05rem;
  color: var(--fg-muted);
  margin-bottom: 28px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  font-family: var(--mono);
  font-size: 13px;
  padding: 10px 24px;
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  color: var(--accent);
  text-decoration: none;
  background: var(--accent-glow);
  transition: background 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.btn-ghost:hover { background: rgba(212, 168, 67, 0.2); }

/* ── Responsive: tablet 641–900px ────────────────────────────────────────── */
@media (min-width: 641px) {
  .browse-container { padding: 40px 24px 72px; }
  .breadcrumb { margin-bottom: 36px; }

  .grid-makes { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .grid-models { grid-template-columns: repeat(3, 1fr); }
  .grid-years { grid-template-columns: repeat(4, 1fr); }
  .grid-systems { grid-template-columns: repeat(2, 1fr); }
  .grid-parts { grid-template-columns: repeat(2, 1fr); }
}

/* ── Responsive: desktop 901px+ ──────────────────────────────────────────── */
@media (min-width: 901px) {
  .browse-container { padding: 48px 24px 80px; }
  .breadcrumb { margin-bottom: 40px; white-space: normal; overflow-x: visible; }

  .grid-makes { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
  .grid-models { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
  .grid-years { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
  .grid-systems { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
  .grid-parts { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

  .card { padding: 24px 20px; }
  .card:hover { transform: translateY(-1px); }
  .card-system { padding: 28px 24px; }

  .part-detail {
    grid-template-columns: 1fr 320px;
    gap: 40px;
  }
  .part-detail-sidebar {
    position: sticky;
    top: 80px;
    padding: 28px 24px;
  }
  .part-detail-desc { max-width: 560px; }
}