/* ═══════════════════════════════════════════════════════════
   BIASO DIGITAL — stack.css
   Seção Stack de Tecnologias — scroll automático
═══════════════════════════════════════════════════════════ */

/* ── SECTION ── */
#stack {
  padding: 60px 0;
  background: #030710;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

/* ── LABEL ── */
.stack-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--ghost);
  text-align: center;
  margin-bottom: var(--space-6);
}

/* ── WRAPPER — herda fade lateral do global.css ── */
.stack-wrap::before {
  background: linear-gradient(90deg, #030710, transparent);
}

.stack-wrap::after {
  background: linear-gradient(-90deg, #030710, transparent);
}

/* ── TRACK ── */
.stack-track {
  gap: 10px;
  animation-duration: 22s; /* levemente mais rápido que o clients */
}

/* Pausa ao hover */
.stack-wrap:hover .stack-track {
  animation-play-state: paused;
}

/* ── ITEM ── */
.stack-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--deep-space);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  padding: 8px 18px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
  transition:
    color var(--duration) var(--ease),
    border-color var(--duration) var(--ease),
    background var(--duration) var(--ease);
}

.stack-item:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

/* Ponto colorido da tecnologia */
.stack-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  opacity: 0.85;
}

/* Respeita preferência de movimento reduzido */
@media (prefers-reduced-motion: reduce) {
  .stack-track {
    animation: none;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    padding: 0 var(--space-6);
  }

  /* Oculta o bloco duplicado */
  .stack-item:nth-child(n+19) {
    display: none;
  }
}

/* ── RESPONSIVO ── */
@media (max-width: 640px) {
  #stack {
    padding: 44px 0;
  }

  .stack-label {
    padding: 0 20px;
  }

  .stack-item {
    font-size: 12px;
    padding: 7px 14px;
  }
}