/* Page background (optional but recommended) */
body {
  background: #0f1220;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  padding: 40px;
}

/* Container layout */
.chat-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  max-width: 900px;
}

/* Button styling */
.chat-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 14px 20px;
  border-radius: 12px;

  background: linear-gradient(135deg, #6a5cff, #8f7bff);
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.3px;

  box-shadow:
    0 8px 20px rgba(106, 92, 255, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);

  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    filter 0.2s ease;
}

/* Hover effect */
.chat-button:hover {
  transform: translateY(-3px);
  box-shadow:
    0 14px 30px rgba(106, 92, 255, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  filter: brightness(1.08);
}

/* Active (click) state */
.chat-button:active {
  transform: translateY(0);
  box-shadow:
    0 6px 14px rgba(106, 92, 255, 0.4),
    inset 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Accessibility focus */
.chat-button:focus-visible {
  outline: 3px solid rgba(143, 123, 255, 0.7);
  outline-offset: 3px;
}