:root {
  --primary-color: #007bff;
  --hover-color: #0056b3;
  --background-color: #f8f9fa;
  --container-bg: #ffffff;
}

body {
  font-family: "Segoe UI", Arial, sans-serif;
  background-color: #f8f9fa;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
}

.container {
  background: var(--container-bg);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 600px;
}

h1 {
  color: #333;
  text-align: center;
  margin-bottom: 1.5rem;
}

.input-group {
  margin-bottom: 1.5rem;
}

#qr-input {
  width: 100%;
  padding: 12px;
  border: 2px solid #ddd;
  border-radius: 6px;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

#qr-input:focus {
  outline: none;
  border-color: #007bff;
}

.settings {
  margin: 1.5rem 0;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
}

.color-pickers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.color-input {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.color-input input[type="color"] {
  width: 100%;
  height: 40px;
  cursor: pointer;
}

.size-control {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

input[type="range"] {
  width: 100%;
  height: 8px;
  background: #ddd;
  border-radius: 4px;
  outline: none;
  -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: #007bff;
  border-radius: 50%;
  cursor: pointer;
}

.buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

button {
  flex: 1;
  padding: 12px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.3s ease;
}

.generate-btn {
  background-color: var(--primary-color);
  color: white;
}

.download-btn {
  background-color: #28a745;
  color: white;
}

button:hover {
  transform: translateY(-1px);
}

.generate-btn:hover {
  background-color: #0056b3;
}

.download-btn:hover {
  background-color: #218838;
}

button:disabled {
  background-color: #6c757d;
  cursor: not-allowed;
  transform: none;
}

#qrcode {
  margin: 2rem auto;
  display: flex;
  justify-content: center;
}

.credits {
  text-align: center;
  margin-top: 2rem;
  color: #666;
  font-size: 0.9rem;
}

.credits a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.logo-upload {
  margin: 5px;
}

.logo-upload input {
  width: auto;
  margin-left: 10px;
}

/* Estilos para personalizar el botón de subir archivos */
.custom-file-upload {
  display: inline-block;
  padding: 12px;
  background-color: #a7b300b2;
  color: #000000;
  border-radius: 6px;
  cursor: pointer;
}

.custom-file-upload:hover {
  background-color: #cec10fe1;
}

.custom-file-upload input[type="file"] {
  display: none;
}

#ingreseURL {
  font-family: "Roboto Mono", sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.025rem;
  font-style: normal;
  text-transform: uppercase;
  color: #ffffff;
  background-color: #000000;
  border-radius: 0.3125rem;
  -webkit-border-radius: 0.3125rem;
  -moz-border-radius: 0.3125rem;
  padding: 0.4375rem 0.5rem;
  border-style: none;
  border-width: 0rem;
  border-color: #ef2d56;
  -webkit-box-shadow: inset -21px 0px 23px 0px rgba(0, 64, 255, 0.62);
  -moz-box-shadow: inset -21px 0px 23px 0px rgba(0, 64, 255, 0.62);
  -box-shadow: inset -21px 0px 23px 0px rgba(0, 64, 255, 0.62);
}

@media (max-width: 480px) {
  .color-pickers {
    grid-template-columns: 1fr;
  }

  .buttons {
    flex-direction: column;
  }
}

#qrcode canvas {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

#qrcode canvas:hover {
  transform: scale(1.05);
  opacity: 0.9;
}