body {
  font-family: Inter, system-ui, sans-serif;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: #fff;
  margin: 0;
  padding: 40px;
}

.container {
  max-width: 1100px;
  margin: auto;
  background: rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

h1 {
  text-align: center;
  margin-bottom: 10px;
}

.subtitle {
  text-align: center;
  opacity: 0.85;
  margin-bottom: 30px;
}

h2 {
  grid-column: span 3;
  margin-top: 30px;
  color: #9adfff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.field label {
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.field input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  margin-top: 6px;
}

.info {
  background: #4aa3ff;
  color: #000;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 12px;
  text-align: center;
  cursor: help;
  position: relative;
}

.info:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 140%;
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: #fff;
  padding: 8px 10px;
  border-radius: 6px;
  white-space: nowrap;
  font-size: 12px;
}

.btn {
  grid-column: span 3;
  margin-top: 30px;
  padding: 14px;
  font-size: 18px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  background: linear-gradient(90deg, #00c6ff, #0072ff);
  color: #fff;
}

#result {
  margin-top: 30px;
  font-size: 18px;
  text-align: center;
}


.upload-section {
  background: rgba(255, 255, 255, 0.08);
  padding: 20px;
  border-radius: 12px;
  border: 1px dashed #4aa3ff;
}

.hint {
  font-size: 12px;
  color: #9adfff;
  margin-top: 10px;
}

.batch-results {
  max-height: 300px;
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.2);
  padding: 15px;
  border-radius: 8px;
  text-align: left;
}

.result-row {
  padding: 10px;
  margin-bottom: 5px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}