/* ═══════════════════════════════════════════════
   EnvriCon — references.css
   Page-specific styles for references.html
   ═══════════════════════════════════════════════ */

/* ── PAGE HEADER ── */
.page-header {
  padding: 9rem 3rem 5rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 50%, rgba(61,220,104,0.07) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(61,220,104,0.04) 0%, transparent 50%);
  pointer-events: none;
}

.page-header-bg-text {
  position: absolute;
  right: -1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 16rem;
  color: rgba(61,220,104,0.03);
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb span { color: var(--border); }

.page-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  color: var(--white);
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 600px;
  position: relative;
  z-index: 1;
}

.header-meta {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  position: relative;
  z-index: 1;
}

.meta-item { display: flex; flex-direction: column; }

.meta-num {
  font-family: 'Syne', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--green);
  line-height: 1;
}

.meta-lbl {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ── MAIN CONTENT ── */
.page-body { padding: 4rem 3rem 6rem; }

/* ── TABS ── */
.tabs-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: 'Syne', sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.9rem 2rem;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color 0.2s, border-color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tab-btn .tab-count {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  color: var(--text-muted);
  transition: background 0.2s, color 0.2s;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--green); border-bottom-color: var(--green); }
.tab-btn.active .tab-count {
  background: rgba(61,220,104,0.15);
  border-color: rgba(61,220,104,0.3);
  color: var(--green);
}

/* ── TAB PANELS ── */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.panel-intro-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ── REF GROUPS ── */
.ref-group { margin-bottom: 3rem; }

.ref-group-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.ref-group-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.ref-group-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── CARDS ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.cards-grid-3 { grid-template-columns: repeat(3, 1fr); }

.ref-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.75rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
  cursor: pointer;
}

.ref-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--green-dim));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.ref-card:hover {
  border-color: rgba(61,220,104,0.3);
  background: #111f14;
  transform: translateY(-3px);
}

.ref-card:hover::after { transform: scaleX(1); }

.ref-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.ref-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  opacity: 0.5;
  flex-shrink: 0;
  margin-top: 0.35rem;
}

.ref-card:hover .ref-dot { opacity: 1; }

.ext-icon {
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
.ref-card:hover .ext-icon { opacity: 1; color: var(--green); }

.ref-org {
  font-family: 'Syne', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.35rem;
  line-height: 1.2;
}

.ref-type {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.ref-cta {
  margin-top: auto;
  padding-top: 1.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.03em;
  opacity: 0;
  transition: opacity 0.2s;
}
.ref-card:hover .ref-cta { opacity: 1; }

/* ── CERT CARDS ── */
.cert-icon-wrap {
  width: 40px; height: 40px;
  background: rgba(61,220,104,0.08);
  border: 1px solid rgba(61,220,104,0.2);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  flex-shrink: 0;
}

/* ── QUOTE BAND ── */
.quote-band {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2.5rem 3rem;
  margin: 3rem 0 0;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.quote-mark {
  font-family: 'Syne', sans-serif;
  font-size: 5rem;
  font-weight: 800;
  color: rgba(61,220,104,0.15);
  line-height: 0.8;
  flex-shrink: 0;
}

.quote-text {
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.8;
}

.quote-text strong { color: var(--text); font-style: normal; }

/* ── FOOTER (references page variant — single row) ── */
footer.refs-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

footer.refs-footer .footer-links {
  justify-content: flex-end;
  margin-bottom: 0;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .page-header { padding: 8rem 1.5rem 4rem; }
  .page-body { padding: 3rem 1.5rem 5rem; }
  .cards-grid { grid-template-columns: 1fr 1fr; }
  .cards-grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .cards-grid,
  .cards-grid-3 { grid-template-columns: 1fr; }
  .header-meta { flex-wrap: wrap; gap: 1.25rem; }
  .tabs-bar { overflow-x: auto; }
  .tab-btn { white-space: nowrap; padding: 0.9rem 1.25rem; }
  .quote-band { flex-direction: column; gap: 1rem; padding: 1.5rem; }
  .page-header-bg-text { font-size: 8rem; }
}