/* ── TECH SHOWCASE — стили второй страницы ──────────────── */

/* Nav override for tech page */
#tc-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(5,5,15,0.92); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
#tc-nav .nav-inner { max-width: 1200px; margin: 0 auto; padding: 0.8rem 2rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
#tc-nav .nav-logo { color: var(--c); font-weight: 700; font-family: var(--mono);
  font-size: 0.85rem; text-decoration: none; display: flex; align-items: center; gap: 0.5rem; }
#tc-nav .nav-links { display: flex; gap: 1.2rem; }
#tc-nav .nav-links a { color: var(--muted); font-size: 0.78rem; text-decoration: none;
  transition: color 0.2s; font-weight: 500; }
#tc-nav .nav-links a:hover { color: var(--text); }
#tc-nav .btn-sm { font-size: 0.72rem; padding: 0.4rem 1rem; }
#tc-hero { padding-top: 6rem; }

/* Stats strip */
.tc-stats-strip { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; margin-top: 2.5rem; }
.tc-stat { text-align: center; min-width: 100px; }
.tc-stat-n { display: block; font-size: 2.4rem; font-weight: 900; color: var(--c);
  font-family: var(--mono); line-height: 1; }
.tc-stat-label { font-size: 0.7rem; color: var(--muted); text-transform: uppercase;
  letter-spacing: 0.08em; margin-top: 0.3rem; display: block; }

/* Tree diagram */
.tc-tree { max-width: 560px; margin: 2rem auto 0; display: flex; flex-direction: column; align-items: center; gap: 0.4rem; }
.tc-tree-node { width: 100%; background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.1rem 1.4rem; transition: border-color 0.3s, transform 0.3s; }
.tc-tree-node:hover { border-color: rgba(0,229,255,0.3); transform: translateY(-2px); }
.tc-n-title { font-weight: 700; font-family: var(--mono); font-size: 0.85rem; color: var(--text);
  display: flex; align-items: center; gap: 0.5rem; }
.tc-n-title i { color: var(--c); }
.tc-n-desc { font-size: 0.75rem; color: var(--muted); margin-top: 0.3rem; }
.tc-n-pass { font-size: 0.72rem; color: var(--g); margin-top: 0.25rem; font-weight: 600; }
.tc-tree-arrow { color: var(--muted); font-size: 0.9rem; opacity: 0.5; }
.tc-tree-row { display: flex; gap: 1rem; width: 100%; }
.tc-tree-row .tc-tree-node { flex: 1; }
.tc-n-ultra { border-color: rgba(0,229,255,0.25); }
.tc-n-high { border-color: rgba(16,185,129,0.25); }
.tc-n-mid { border-color: rgba(249,115,22,0.2); }
.tc-n-low { border-color: rgba(255,185,30,0.15); }
.tc-n-potato { border-color: rgba(230,65,65,0.15); }

/* Effects grid */
.tc-fx-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.tc-fx { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--r);
  padding: 1.2rem; transition: border-color 0.3s, transform 0.3s; }
.tc-fx:hover { border-color: rgba(0,229,255,0.25); transform: translateY(-3px); }
.tc-fx i { color: var(--c); font-size: 1.1rem; display: block; margin-bottom: 0.5rem; }
.tc-fx b { display: block; font-size: 0.82rem; color: var(--text); margin-bottom: 0.25rem; }
.tc-fx span { font-size: 0.72rem; color: var(--muted); line-height: 1.4; }

/* Architecture cards */
.tc-arch-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; margin-top: 2rem; }
.tc-arch-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--r);
  padding: 1.5rem; transition: border-color 0.3s, transform 0.3s; }
.tc-arch-card:hover { border-color: rgba(0,229,255,0.25); transform: translateY(-3px); }
.tc-arch-head { font-weight: 700; font-family: var(--mono); font-size: 0.85rem; color: var(--c);
  margin-bottom: 0.6rem; display: flex; align-items: center; gap: 0.5rem; }
.tc-arch-card p { font-size: 0.78rem; color: var(--muted); line-height: 1.5; margin: 0 0 0.5rem; }
.tc-arch-rule { font-size: 0.7rem; color: var(--g); font-family: var(--mono); padding: 0.4rem 0.6rem;
  background: rgba(16,185,129,0.06); border-radius: 4px; }

/* Mobile cards */
.tc-mob-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.tc-mob-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--r);
  padding: 1.3rem; text-align: center; transition: border-color 0.3s, transform 0.3s; }
.tc-mob-card:hover { border-color: rgba(0,229,255,0.25); transform: translateY(-3px); }
.tc-mob-card i { font-size: 1.4rem; color: var(--c); display: block; margin-bottom: 0.6rem; }
.tc-mob-card b { display: block; font-size: 0.82rem; color: var(--text); margin-bottom: 0.3rem; }
.tc-mob-card span { font-size: 0.72rem; color: var(--muted); line-height: 1.4; }

/* Responsive */
@media (max-width: 900px) {
  .tc-fx-grid { grid-template-columns: repeat(2, 1fr); }
  .tc-arch-grid { grid-template-columns: 1fr; }
  .tc-mob-grid { grid-template-columns: repeat(2, 1fr); }
  #tc-nav .nav-links { display: none; }
}
@media (max-width: 600px) {
  .tc-fx-grid { grid-template-columns: 1fr; }
  .tc-mob-grid { grid-template-columns: 1fr; }
  .tc-stats-strip { gap: 1rem; }
  .tc-stat-n { font-size: 1.8rem; }
}