/* QR Generator — namespace .qr-* */

.qr-app {
  --qr-accent: var(--color-accent, #76b900);
  --qr-accent-soft: rgba(118, 185, 0, 0.12);
  --qr-surface: color-mix(in srgb, var(--color-bg-surface, #111) 92%, #000);
  --qr-border: color-mix(in srgb, var(--qr-accent) 22%, var(--color-border-default, #2a2a2a));
  width: 100%;
  padding: var(--space-4);
  border-radius: calc(var(--radius-md) + 4px);
  border: 1px solid var(--qr-border);
  background:
    radial-gradient(90% 70% at 100% 0%, var(--qr-accent-soft), transparent 50%),
    linear-gradient(165deg, var(--qr-surface), var(--color-bg-surface, #111));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}

.qr-app-inner {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}

.qr-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

.qr-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: sticky;
  top: var(--space-4);
}

.qr-section {
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.18);
  overflow: hidden;
}

.qr-section[open] {
  border-color: color-mix(in srgb, var(--qr-accent) 30%, var(--border-subtle, rgba(255, 255, 255, 0.08)));
}

.qr-section-title {
  cursor: pointer;
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  font-size: var(--font-size-sm);
  list-style: none;
  user-select: none;
}

.qr-section-title::-webkit-details-marker {
  display: none;
}

.qr-section-body {
  padding: 0 var(--space-4) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.qr-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.qr-tab {
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.12));
  background: transparent;
  color: inherit;
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.qr-tab:hover {
  border-color: color-mix(in srgb, var(--qr-accent) 40%, transparent);
}

.qr-tab.is-active {
  border-color: var(--qr-accent);
  background: var(--qr-accent-soft);
  color: var(--qr-accent);
}

.qr-field {
  display: grid;
  gap: var(--space-1);
}

.qr-field--check {
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.qr-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary, #a7a7a7);
}

.qr-input,
.qr-textarea {
  width: 100%;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.12));
  background: var(--input-bg, rgba(0, 0, 0, 0.25));
  color: inherit;
  font: inherit;
  font-size: var(--font-size-sm);
}

.qr-input--mono {
  font-family: ui-monospace, monospace;
}

.qr-textarea {
  resize: vertical;
  min-height: 4.5rem;
}

.qr-color {
  width: 100%;
  height: 2.25rem;
  padding: 0.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.12));
  background: var(--input-bg);
  cursor: pointer;
}

.qr-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.qr-presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.qr-preset-btn,
.qr-btn {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.12));
  background: rgba(255, 255, 255, 0.04);
  color: inherit;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.qr-preset-btn:hover,
.qr-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--qr-accent) 45%, transparent);
}

.qr-btn--primary {
  border-color: color-mix(in srgb, var(--qr-accent) 55%, transparent);
  background: var(--qr-accent-soft);
  color: var(--qr-accent);
}

.qr-btn--ghost {
  align-self: start;
  font-size: var(--font-size-xs);
  opacity: 0.85;
}

.qr-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.qr-hint {
  margin: 0;
  font-size: var(--font-size-xs);
  color: var(--color-info, #3498db);
}

.qr-preview {
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.22);
  overflow: hidden;
}

.qr-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.06));
  font-size: var(--font-size-sm);
}

.qr-preview-label {
  font-weight: 600;
}

.qr-preview-status {
  font-size: var(--font-size-xs);
  opacity: 0.65;
}

.qr-preview-stage {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
}

.qr-preview-checker {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, rgba(255, 255, 255, 0.04) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, 0.04) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.04) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.04) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  pointer-events: none;
}

.qr-preview-content {
  position: relative;
  z-index: 1;
  max-width: 100%;
}

.qr-preview-frame {
  display: flex;
  justify-content: center;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
}

.qr-preview-frame img {
  display: block;
  border-radius: var(--radius-md);
  max-width: min(100%, 480px);
  height: auto;
}

.qr-preview-empty {
  position: relative;
  z-index: 1;
  margin: 0;
  opacity: 0.55;
  font-size: var(--font-size-sm);
  text-align: center;
}

.qr-preview.is-loading .qr-preview-stage {
  opacity: 0.75;
}

.qr-export {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.qr-encoder-sandbox {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .qr-app-inner {
    grid-template-columns: 1fr;
  }

  .qr-main {
    position: static;
  }

  .qr-grid-2 {
    grid-template-columns: 1fr;
  }
}