.ai-activity-box {
  margin: 28px 0;
  padding: 22px;
  border-radius: 8px;
  background: #f8fbff;
  border: 1px solid #d8e5f7;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.ai-activity-box h3 {
  margin: 0 0 10px;
  color: #143a7b;
  font-size: 1.35rem;
  line-height: 1.25;
}

.ai-activity-box p {
  margin: 0 0 14px;
  color: #334155;
  line-height: 1.55;
}

.ai-prompt-box {
  margin-top: 16px;
}

.ai-prompt-box label {
  display: block;
  margin-bottom: 8px;
  color: #172033;
}

.ai-prompt-box textarea {
  width: 100%;
  min-height: 128px;
  border-radius: 8px;
  border: 1px solid #bfd2ee;
  padding: 12px 14px;
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.5;
  resize: vertical;
  background: #fff;
  color: #1f2937;
  box-sizing: border-box;
}

.ai-activity-buttons {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.ai-activity-buttons button,
.ai-create-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid #c7d8f0;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
}

.ai-activity-buttons button {
  background: #eef5ff;
  color: #17458c;
}

.ai-create-btn {
  background: #2563eb;
  color: white;
  border-color: #2563eb;
}

.ai-activity-buttons button:hover,
.ai-create-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.16);
}

.ai-activity-note {
  margin-top: 14px;
  font-size: 0.92rem;
  color: #64748b;
}

@media (max-width: 640px) {
  .ai-activity-box {
    padding: 18px;
  }

  .ai-activity-buttons {
    flex-direction: column;
  }

  .ai-activity-buttons button,
  .ai-create-btn {
    width: 100%;
  }
}