/* Site toolbar injected into static HTML pages (sample, calculators, reference-matrix) */
:root {
  --tb-gold: #c9a84c;
  --tb-gold2: #a4842f;
  --tb-bg: #0f0a24;
  --tb-panel: #171232;
  --tb-line: #2a2350;
}

.sitetb {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.2rem;
  background: rgba(15, 10, 36, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--tb-line);
  font-family: "Segoe UI", Calibri, system-ui, sans-serif;
  color: #ece8f7;
  box-sizing: border-box;
}

.sitetb--light {
  background: rgba(247, 250, 252, 0.97);
  border-bottom-color: #cbd5e1;
  color: #1e293b;
}

.sitetb--dark {
  background: rgba(5, 5, 7, 0.97);
  border-bottom-color: rgba(102, 252, 241, 0.15);
}

.sitetb-back {
  font: inherit;
  font-size: 0.76rem;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--tb-line);
  background: var(--tb-panel);
  color: inherit;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: 0.15s;
}
.sitetb-back:hover { border-color: var(--tb-gold); color: var(--tb-gold); }
.sitetb--light .sitetb-back { border-color: #cbd5e1; background: #fff; color: #1e293b; }
.sitetb--light .sitetb-back:hover { border-color: #16365c; color: #16365c; }
.sitetb--dark .sitetb-back { border-color: #475569; background: rgba(17,19,24,0.85); color: #f1f5f9; }
.sitetb--dark .sitetb-back:hover { border-color: #7ef9f4; color: #7ef9f4; }

.sitetb-home {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  flex-shrink: 0;
  color: #b9b0e0;
}
.sitetb-home b { color: var(--tb-gold); }
.sitetb-home span { color: #8a82a8; }
.sitetb--light .sitetb-home { color: #475569; }
.sitetb--light .sitetb-home b { color: #16365c; }
.sitetb--light .sitetb-home span { color: #64748b; }
.sitetb--dark .sitetb-home { color: #7ef9f4; }
.sitetb--dark .sitetb-home b { color: #7ef9f4; }
.sitetb--dark .sitetb-home span { color: #cbd5e1; }

.sitetb-nav {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0 0.3rem;
  min-width: 0;
}
.sitetb-nav::-webkit-scrollbar { display: none; }

.sitetb-link {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.76rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--tb-line);
  background: var(--tb-panel);
  white-space: nowrap;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
  transition: 0.15s;
}
.sitetb-link:hover,
.sitetb-link.active { border-color: var(--tb-gold); color: var(--tb-gold); }
.sitetb-link.active { background: rgba(201,168,76,0.12); }
.sitetb-link.locked { opacity: 0.75; }
.sitetb-lock { font-size: 0.6rem; }

.sitetb--light .sitetb-link { border-color: #cbd5e1; background: #fff; color: #1e293b; }
.sitetb--light .sitetb-link:hover,
.sitetb--light .sitetb-link.active { border-color: #16365c; color: #16365c; background: #eef2f7; }
.sitetb--dark .sitetb-link { border-color: #475569; background: rgba(17,19,24,0.85); color: #f1f5f9; }
.sitetb--dark .sitetb-link:hover,
.sitetb--dark .sitetb-link.active { border-color: #7ef9f4; color: #7ef9f4; }

.sitetb-auth {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.sitetb-btn {
  font: inherit;
  font-size: 0.8rem;
  padding: 0.32rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--tb-line);
  background: var(--tb-panel);
  color: inherit;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: 0.15s;
}
.sitetb-btn:hover { border-color: var(--tb-gold); }
.sitetb-btn--accent { border-color: rgba(201,168,76,0.45); color: var(--tb-gold); }
.sitetb-btn--primary {
  background: linear-gradient(135deg, var(--tb-gold), var(--tb-gold2));
  color: #241b04;
  border-color: transparent;
  font-weight: 600;
}
.sitetb--light .sitetb-btn { border-color: #cbd5e1; background: #fff; color: #1e293b; }
.sitetb--light .sitetb-btn:hover { border-color: #16365c; }
.sitetb--light .sitetb-btn--accent { border-color: rgba(22,54,92,0.35); color: #16365c; }
.sitetb--dark .sitetb-btn { border-color: #475569; background: rgba(17,19,24,0.85); color: #f1f5f9; }
.sitetb--dark .sitetb-btn:hover { border-color: #7ef9f4; }
.sitetb--dark .sitetb-btn--accent { border-color: rgba(126,249,244,0.45); color: #7ef9f4; }

@media (max-width: 640px) {
  .sitetb-home span { display: none; }
  .sitetb { padding: 0.45rem 0.7rem; gap: 0.3rem; }
}