/* ── PAGE HEADER ── */
.page-header {
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0 2.5rem;
}

/* ── CATALOG LAYOUT ── */
.catalog-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  padding-top: 2rem;
  padding-bottom: 4rem;
  align-items: start;
}

/* ── FILTERS ── */
.filters-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
}
.filter-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.filter-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding: 4px 0;
  cursor: pointer;
  transition: color 0.15s;
}
.filter-check:hover { color: var(--text-primary); }
.filter-check input[type="checkbox"] { accent-color: var(--blue-bright); }

/* ── SEARCH BAR ── */
.search-bar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.search-input {
  flex: 1;
  min-width: 200px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 0 14px;
  outline: none;
  transition: border-color 0.2s;
}
.search-input:focus { border-color: var(--blue-bright); }
.search-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 100%;
}
.sort-select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: var(--radius);
  cursor: pointer;
}

/* ── DATA PRODUCT CARD ── */
.dp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.dp-card--featured { border-color: rgba(0,200,215,0.3); }

.dp-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  padding: 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
}
.dp-badges { display: flex; gap: 8px; margin-bottom: 0.75rem; }
.dp-name {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 0.4rem;
}
.dp-tagline { color: var(--text-secondary); font-size: 0.9rem; }

.dp-meta-quick {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 160px;
  flex-shrink: 0;
}
.meta-item { display: flex; flex-direction: column; }
.meta-label { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.meta-val   { font-size: 0.85rem; color: var(--text-primary); font-weight: 600; }

.dp-card-body { 
  display: none; 
  padding: 2rem; 
  flex-direction: column; 
  gap: 2rem; 
  border-top: 1px solid var(--border);
}
.dp-card.is-expanded .dp-card-body { display: flex; }

.btn-toggle-card {
  background: var(--cyan-dim);
  border: 1px solid var(--border);
  color: var(--cyan);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  align-self: flex-start;
  margin-top: 1rem;
}
.btn-toggle-card:hover {
  background: var(--cyan);
  color: #fff;
  border-color: var(--cyan);
}
.dp-card.is-expanded .btn-toggle-card {
  background: transparent;
  color: var(--text-muted);
}

.dp-section h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}
.dp-section p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; }

/* FAIR tags */
.fair-tags {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}
.fair-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.fair-letter {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--cyan);
  background: var(--cyan-dim);
  width: 22px; height: 22px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Context grid */
.context-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.context-item {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}
.context-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.context-val { font-size: 0.8rem; color: var(--text-primary); line-height: 1.5; }

/* Schema */
.schema-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.schema-group {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}
.schema-group h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.schema-fields { display: flex; flex-direction: column; gap: 0.4rem; }
.field-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.78rem;
}
.field-row code {
  font-family: var(--font-mono);
  color: var(--cyan);
  background: var(--cyan-dim);
  padding: 1px 6px;
  border-radius: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}
.field-row span { color: var(--text-muted); }

/* Policy */
.policy-box {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.policy-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.policy-row:last-child { border-bottom: none; }
.policy-row--allow { border-left: 3px solid var(--green); }
.policy-row--deny  { border-left: 3px solid var(--red);   }
.policy-row--cond  { border-left: 3px solid var(--amber);  }
.policy-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 2px; }
.policy-row strong { display: block; font-size: 0.85rem; color: var(--text-primary); margin-bottom: 4px; }
.policy-row p { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.55; margin: 0; }
.policy-note {
  margin-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Access grid */
.access-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; }
.access-item {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.access-item--soon { opacity: 0.55; }
.access-icon { font-size: 1.25rem; }
.access-item strong { font-size: 0.85rem; color: var(--text-primary); }
.access-item p { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.5; }

/* Card footer */
.dp-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  flex-wrap: wrap;
  gap: 1rem;
}
.dp-quality { display: flex; align-items: center; gap: 1rem; }
.quality-label { font-size: 0.75rem; color: var(--text-muted); }
.quality-indicators { display: flex; gap: 0.75rem; }
.quality-item { display: flex; align-items: center; gap: 4px; font-size: 0.75rem; color: var(--text-secondary); }
.q-dot { width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.q-dot--green { background: var(--green); }
.q-dot--amber { background: var(--amber); }
.dp-actions { display: flex; gap: 0.75rem; }

/* Placeholder */
.dp-placeholder {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  text-align: center;
}
.placeholder-inner h3 { font-size: 1.1rem; margin: 0.75rem 0 0.5rem; }
.placeholder-inner p { font-size: 0.875rem; color: var(--text-secondary); max-width: 480px; margin: 0 auto; }

@media (max-width: 900px) {
  .catalog-layout   { grid-template-columns: 1fr; }
  .filters-sidebar  { position: static; }
  .fair-tags        { grid-template-columns: 1fr 1fr; }
  .context-grid     { grid-template-columns: 1fr; }
  .schema-groups    { grid-template-columns: 1fr; }
  .access-grid      { grid-template-columns: 1fr; }
  .dp-card-header   { flex-direction: column; }
}