.rand-phone-gen-tool {
  max-width: 800px;
  margin: 20px auto;
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}



.rpg-title { margin: 0 0 5px 0; font-size: 1.4em; }
.rpg-subtitle { margin: 0; opacity: 0.9; font-size: 0.95em; }

.rpg-card {
  background: #fff;
  border-radius: 0px 0px 12px 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  padding: 25px;
  border: 1px solid #e5e7eb;
}

.rpg-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.rpg-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.rpg-field label {
  font-weight: 600;
  font-size: 0.9em;
  color: black;
}

.rpg-field select,
.rpg-field input {
  padding: 10px 12px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.95em;
  transition: all 0.2s ease;
}

.rpg-field input:focus,
.rpg-field select:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.rpg-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rpg-inline span {
  font-weight: 600;
  color: #6b7280;
  font-size: 1.1em;
}

.rpg-field small {
  color: #9ca3af;
  font-size: 0.8em;
}

.rpg-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 15px;
  background: #f8fafc;
  border-radius: 8px;
  margin-bottom: 20px;
}

.rpg-btn {
  padding: 12px 24px;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95em;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}






.rpg-status {
  font-size: 0.9em;
  color: #6b7280;
  font-weight: 500;
}

.rpg-output {
  margin-top: 20px;
}

.rpg-output label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: #374151;
}

#rpg-numbers {
  width: 100%;
  min-height: 250px;
  padding: 15px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-family: 'Courier New', monospace;
  font-size: 0.95em;
  background: #f8fafc;
  resize: vertical;
  transition: border-color 0.2s ease;
}

#rpg-numbers:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.rpg-note {
  display: block;
  margin-top: 8px;
  color: #9ca3af;
  font-size: 0.8em;
  font-style: italic;
}

@media (max-width: 768px) {
  .rpg-card { padding: 20px 15px; }
  .rpg-actions { flex-direction: column; align-items: stretch; }
  .rpg-btn { justify-content: center; }
}