.tool-container {
  max-width: 900px;
  margin: 60px auto;
  background: #fff;
  border-radius: 18px;
  padding: 50px 40px;
  box-shadow: 0 15px 40px rgba(0,0,0,.08);
  text-align: center;
}

/* DROP ZONE */
.drop-zone {
  position: relative;
  border: 2px dashed #2d7cff;
  border-radius: 14px;
  padding: 60px 20px;
  cursor: pointer;
  transition: .3s;
}

.drop-zone:hover {
  background: #f0f5ff;
}

.drop-zone h3 {
  margin: 0;
  font-size: 20px;
}

.drop-zone p {
  margin-top: 8px;
  color: #666;
}

/* 🔥 FILE INPUT (FINAL FIX) */
.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;           /* invisible but clickable */
  cursor: pointer;
}

/* BUTTON */
.process-btn {
  margin-top: 30px;
  padding: 14px 30px;
  background: #2d7cff;
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
}

.process-btn:hover {
  background: #1f63d6;
}