/* ====================================================
   LAST SURVIVORS — RESEARCH LAB
   Uses existing design system: --y, --dk, --dk2, --db,
   --gr, --gr-l, --lt, --wh, Orbitron, Exo 2, Share Tech Mono
   ==================================================== */

/* ── Layout override ── */
.lab-wrap { max-width: 860px; }

/* ── HERO ── */
.lab-hero {
  padding: 2rem 0 3.5rem;
  border-bottom: 1px solid var(--db);
  margin-bottom: 3.5rem;
}
.lab-hero__tag {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gr);
  margin-bottom: 1.5rem;
}
.lab-hero__title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  letter-spacing: 2px;
  color: var(--wh);
  line-height: 1.2;
  margin-bottom: 1.2rem;
}
.lab-hero__title span {
  color: var(--y);
  text-shadow: 0 0 30px var(--y-glow);
}
.lab-hero__subtitle {
  font-family: 'Exo 2', sans-serif;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--lt);
  font-weight: 400;
  margin-bottom: 1rem;
  line-height: 1.6;
}
.lab-hero__text {
  font-size: 0.88rem;
  color: var(--gr-l);
  line-height: 1.8;
  max-width: 600px;
}
.lab-hero__line {
  width: 40px;
  height: 1px;
  background: var(--y-dim);
  margin-top: 2rem;
}

/* ── SECTION PATTERN ── */
.lab-section {
  margin-bottom: 4rem;
}
.lab-section__header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--db);
}
.lab-section__idx {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  color: var(--y-dim);
  letter-spacing: 2px;
}
.lab-section__title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 2vw, 1.25rem);
  letter-spacing: 2px;
  color: var(--wh);
}
.lab-section__desc {
  font-size: 0.85rem;
  color: var(--gr-l);
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* ── DOMAIN CARDS ── */
.lab-domains-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--db);
  border: 1px solid var(--db);
}
.lab-domain-card {
  background: var(--dk);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  transition: background 0.3s var(--ease);
}
.lab-domain-card:hover {
  background: var(--dk2);
}
.lab-domain-card__num {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 3px;
  color: var(--y-dim);
  margin-bottom: 1rem;
}
.lab-domain-card__title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--wh);
  margin-bottom: 0.8rem;
}
.lab-domain-card__desc {
  font-size: 0.82rem;
  color: var(--gr-l);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 1.5rem;
}
.lab-domain-card__btn {
  background: none;
  border: none;
  color: var(--y-dim);
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-align: left;
  cursor: pointer;
  padding: 0;
  transition: color 0.3s;
}
.lab-domain-card__btn:hover {
  color: var(--y);
}

/* ── FILTERS ── */
.lab-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.lab-filter-btn {
  background: none;
  border: none;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gr);
  cursor: pointer;
  padding: 0.3rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}
.lab-filter-btn:hover {
  color: var(--lt);
}
.lab-filter-btn.active {
  color: var(--wh);
  border-bottom-color: var(--y-dim);
}

/* ── PUBLICATION CARDS ── */
.lab-research-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.lab-pub {
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--db);
  transition: opacity 0.3s var(--ease);
}
.lab-pub:first-child {
  border-top: 1px solid var(--db);
}
.lab-pub.lab-hidden {
  display: none;
}
.lab-pub__meta {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 0.7rem;
}
.lab-pub__cat {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--y-dim);
}
.lab-pub__date {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 1px;
  color: var(--gr);
}
.lab-pub__title {
  font-family: 'Exo 2', sans-serif;
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--wh);
  margin-bottom: 0.6rem;
  line-height: 1.3;
  cursor: pointer;
  transition: color 0.3s;
}
.lab-pub__title:hover {
  color: var(--y);
}
.lab-pub__abstract {
  font-size: 0.85rem;
  color: var(--gr-l);
  line-height: 1.8;
  max-width: 680px;
}
.lab-pub__foot {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 0.8rem;
}
.lab-pub__time,
.lab-pub__id {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 1.5px;
  color: var(--gr);
}

/* ── FIELD NOTES ── */
.lab-notes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--db);
  border: 1px solid var(--db);
}
.lab-note {
  background: var(--dk);
  padding: 1.5rem;
  transition: background 0.3s var(--ease);
}
.lab-note:hover {
  background: var(--dk2);
}
.lab-note__id {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 2px;
  color: var(--y-dim);
  margin-bottom: 0.8rem;
}
.lab-note__text {
  font-size: 0.84rem;
  color: var(--lt);
  line-height: 1.75;
  font-style: italic;
}

/* ── MANUAL CARD ── */
.lab-manual-card {
  border: 1px solid var(--db);
  background: var(--dk);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s var(--ease);
}
.lab-manual-card:hover {
  border-color: rgba(255, 214, 0, 0.12);
}
.lab-manual-card__badge {
  position: absolute;
  top: 0;
  right: 0;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bk);
  background: var(--y-dim);
  padding: 0.35rem 1rem;
}
.lab-manual-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.lab-manual-card__icon {
  color: var(--y-dim);
  margin-bottom: 0.3rem;
}
.lab-manual-card__title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 2px;
  color: var(--wh);
}
.lab-manual-card__desc {
  font-size: 0.85rem;
  color: var(--gr-l);
  line-height: 1.8;
  max-width: 550px;
}
.lab-manual-card__meta {
  display: flex;
  gap: 1.5rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 1.5px;
  color: var(--gr);
}
.lab-manual-card__btn {
  align-self: flex-start;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.65rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 0.8rem 2rem;
  background: transparent;
  border: 1px solid var(--y);
  color: var(--y);
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.lab-manual-card__btn:hover {
  background: var(--y);
  color: var(--bk);
}

/* ── PRINCIPLES ── */
.lab-principles-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--db);
}
.lab-principle {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.3rem 1.5rem;
  border-bottom: 1px solid var(--db);
  transition: background 0.3s var(--ease);
}
.lab-principle:last-child {
  border-bottom: none;
}
.lab-principle:hover {
  background: var(--dk);
}
.lab-principle__num {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--y-dim);
  min-width: 28px;
}
.lab-principle__text {
  font-family: 'Exo 2', sans-serif;
  font-size: 0.95rem;
  color: var(--lt);
  letter-spacing: 0.5px;
}

/* ── CONTRIBUTE ── */
.lab-section--contribute {
  margin-bottom: 2rem;
}
.lab-contribute-box {
  border: 1px solid var(--db);
  padding: 2.5rem;
  text-align: center;
  background: linear-gradient(180deg, rgba(255,214,0,0.015) 0%, transparent 100%);
}
.lab-contribute-box__title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 3px;
  color: var(--y);
  margin-bottom: 1rem;
}
.lab-contribute-box__text {
  font-size: 0.88rem;
  color: var(--gr-l);
  line-height: 1.8;
  max-width: 520px;
  margin: 0 auto 1.8rem;
}
.lab-contribute-box__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.65rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 0.8rem 2rem;
  background: var(--y);
  color: var(--bk);
  border: none;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  text-decoration: none;
}
.lab-contribute-box__btn:hover {
  background: var(--wh);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--y-glow-s);
}

/* ── LAB FOOTER ── */
.lab-footer {
  padding: 2rem 0 1rem;
}
.lab-footer__line {
  width: 100%;
  height: 1px;
  background: var(--db);
  margin-bottom: 1.5rem;
}
.lab-footer__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.lab-footer__label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 2px;
  color: var(--gr);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .lab-domains-grid {
    grid-template-columns: 1fr;
  }
  .lab-notes-grid {
    grid-template-columns: 1fr;
  }
  .lab-filters {
    gap: 1rem;
  }
  .lab-footer__row {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
  .lab-hero__title {
    font-size: clamp(1.5rem, 6vw, 2.2rem);
  }
  .lab-manual-card {
    padding: 1.8rem;
  }
}

@media (max-width: 480px) {
  .lab-domain-card {
    padding: 1.5rem 1.2rem;
  }
  .lab-note {
    padding: 1.2rem;
  }
  .lab-principle {
    padding: 1rem 1.2rem;
    gap: 1rem;
  }
  .lab-contribute-box {
    padding: 2rem 1.5rem;
  }
}