/* signals.css */
/* ==========================================
   SIGNALS WALL - Openclaw-style Thought Cards
   ========================================== */

.signals-section {
  position: relative;
  overflow: hidden;
}

.signals-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.08), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.signals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  position: relative;
  z-index: 1;
}

.signal-card {
  padding: 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.signal-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.05), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.signal-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-glow);
}

.signal-card:hover::before {
  opacity: 1;
}

.signal-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
  font-weight: 400;
}

.signal-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.signal-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-glass);
}

.signal-icon {
  width: 16px;
  height: 16px;
  color: var(--accent-1);
  opacity: 0.6;
}

.signal-category {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

/* Stagger animation for signal cards */
.signal-card.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px) scale(0.95);
}

.signal-card.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.signal-card:nth-child(1) {
  transition-delay: 0s;
}

.signal-card:nth-child(2) {
  transition-delay: 0.05s;
}

.signal-card:nth-child(3) {
  transition-delay: 0.1s;
}

.signal-card:nth-child(4) {
  transition-delay: 0.15s;
}

.signal-card:nth-child(5) {
  transition-delay: 0.2s;
}

.signal-card:nth-child(6) {
  transition-delay: 0.25s;
}

.signal-card:nth-child(7) {
  transition-delay: 0.3s;
}

.signal-card:nth-child(8) {
  transition-delay: 0.35s;
}

.signal-card:nth-child(9) {
  transition-delay: 0.4s;
}

/* Responsive */
@media (max-width: 768px) {
  .signals-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .signal-card {
    padding: 20px;
  }

  .signal-text {
    font-size: 0.9rem;
  }
}