/* Alternância Features / Roadmap — mesma página */
.s21-mode-nav {
  position: sticky;
  top: 0;
  z-index: calc(var(--z-overlay) + 2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s2);
  padding: var(--s3) var(--s4);
  background: rgba(4, 4, 10, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-gold);
}

.s21-mode-nav__btn {
  font-family: var(--s21-title-font, var(--font-display));
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver-mid);
  padding: 12px 28px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: color var(--t-mid), border-color var(--t-mid), background var(--t-mid), box-shadow var(--t-mid);
  border-radius: 2px;
}

.s21-mode-nav__btn:hover {
  color: var(--gold-bright);
  border-color: rgba(200, 152, 40, 0.25);
}

.s21-mode-nav__btn.is-active {
  color: var(--gold-bright);
  border-color: var(--border-gold);
  background: rgba(200, 152, 40, 0.08);
  box-shadow: 0 0 24px rgba(200, 152, 40, 0.12);
}

.s21-panel {
  display: none;
}

.s21-panel.is-active {
  display: block;
}

.about-s21-root .world-nav {
  top: 56px;
}

.about-s21-root #panel-roadmap.page-roadmap {
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 79px, rgba(255,255,255,0.004) 79px, rgba(255,255,255,0.004) 80px),
    repeating-linear-gradient(90deg, transparent, transparent 79px, rgba(255,255,255,0.003) 79px, rgba(255,255,255,0.003) 80px);
}

.s21-tab-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--s3);
  padding: var(--s3) var(--s8);
  background: linear-gradient(135deg, rgba(142,197,255,0.12), rgba(74,154,255,0.05));
  border: 1px solid rgba(200,152,40,0.55);
  font-family: var(--s21-title-font, var(--font-display));
  font-size: 1.2rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-glow);
  cursor: pointer;
  transition: all 0.3s ease;
}

.s21-tab-trigger:hover {
  background: linear-gradient(135deg, rgba(142,197,255,0.22), rgba(74,154,255,0.10));
  border-color: rgba(232,184,64,0.85);
}

.s21-tab-trigger--gold {
  background: linear-gradient(135deg, rgba(200,152,40,0.08), rgba(200,152,40,0.03));
  border-color: rgba(200,152,40,0.45);
  color: var(--gold-bright);
  font-size: 1.3rem;
  animation: pulse-gold 3s ease-in-out infinite;
}

.s21-tab-trigger--gold:hover {
  background: linear-gradient(135deg, rgba(200,152,40,0.18), rgba(200,152,40,0.08));
  border-color: rgba(200,152,40,0.80);
  color: var(--gold-pale);
}

.s21-tab-trigger__hint {
  font-family: var(--font-heading);
  font-size: 0.55rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--silver-dim);
  margin-top: var(--s3);
  opacity: 0.5;
}

.s21-panel-footer {
  text-align: center;
  padding: var(--s4) var(--s4) var(--s6);
}