/**
 * QR Code Component
 * Styles für QR-Code Generierung und Anzeige
 */

/* QR Container */
.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin: 0;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

/* QR Code */
.qr-code {
  position: relative;
  background-color: white; /* Keep white for QR code readability */
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.qr-code img,
.qr-code canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

/* QR Controls */
.qr-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  width: 100%;
  margin-top: var(--space-2);
}

/* QR Size Control */
.qr-size-control {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.qr-size-slider {
  width: 100px;
  height: 4px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  -webkit-appearance: none;
  appearance: none;
}

.qr-size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background-color: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
}

.qr-size-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background-color: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* QR Download Button */
.qr-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background-color: transparent;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all var(--transition-base);
}

.qr-download:hover {
  color: white;
  background-color: var(--color-primary);
}

.qr-download svg {
  width: 18px;
  height: 18px;
}

/* QR Error State */
.qr-error {
  color: var(--color-error);
  text-align: center;
  padding: var(--space-4);
}

/* QR Loading State */
.qr-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.qr-loading::after {
  content: "";
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: qr-spin 1s linear infinite;
}

@keyframes qr-spin {
  to {
    transform: rotate(360deg);
  }
}

/* QR Options */
.qr-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-2);
  width: 100%;
}

.qr-option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* QR Preview */
.qr-preview {
  position: relative;
  width: 200px;
  height: 200px;
  background-color: white; /* Keep white for QR code readability */
  padding: var(--space-4);
  margin: 0 auto;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .qr-preview {
  box-shadow: var(--shadow-lg);
}

/* Print Optimizations */
@media print {
  .qr-controls,
  .qr-options,
  .qr-download {
    display: none;
  }

  .qr-container {
    box-shadow: none;
    padding: 0;
  }

  .qr-preview {
    width: 100%;
    height: auto;
  }
}

/* Responsive Design */
@media (max-width: 640px) {
  .qr-container {
    padding: var(--space-3);
    margin: 0;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }

  .qr-preview {
    width: 180px;
    height: 180px;
  }

  .qr-controls {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
  }

  .qr-download {
    flex: 1;
    min-width: 140px;
    max-width: 200px;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .qr-container,
  .qr-preview {
    border: 2px solid var(--color-text);
  }

  .qr-download {
    border: 2px solid currentColor;
  }
}