/* QR Code tool — extends unified.css */

body.qr-page {
  background:
    radial-gradient(880px 420px at 8% -20%, rgba(138, 43, 226, 0.18), transparent 62%),
    radial-gradient(820px 420px at 94% -12%, rgba(180, 109, 255, 0.12), transparent 58%),
    linear-gradient(160deg, color-mix(in oklab, var(--bg) 94%, var(--bg-elev) 6%), var(--bg));
}

.tool-header {
  position: sticky;
  top: 0;
  z-index: 24;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel) 84%, transparent);
  backdrop-filter: blur(10px) saturate(120%);
  padding: 10px 14px;
}

.tool-header-inner {
  width: min(1180px, 94vw);
  margin: 0 auto;
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
}

.tool-brand-card {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid color-mix(in oklab, var(--border) 84%, transparent);
  background: color-mix(in oklab, var(--panel-soft) 88%, #000 12%);
  text-decoration: none;
  color: inherit;
}

.tool-brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  object-fit: cover;
}

.tool-brand-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.tool-brand-sub {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.qr-layout {
  width: min(1180px, 94vw);
  margin: 20px auto 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 16px;
  align-items: start;
}

.qr-panel {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  box-shadow: var(--shadow-sm);
  padding: 16px;
}

.qr-panel h2 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

.qr-field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.qr-field label {
  font-weight: 600;
  font-size: 0.92rem;
}

.qr-field .hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.qr-field textarea,
.qr-field input,
.qr-field select {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel-soft) 90%, #000 10%);
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
}

.qr-field textarea {
  min-height: 110px;
  resize: vertical;
}

.qr-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.qr-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.qr-actions .download-btn,
.qr-actions button,
.qr-actions .ghost {
  min-height: 42px;
}

.qr-status {
  min-height: 1.4em;
  margin: 8px 0 0;
  font-size: 0.9rem;
}

.qr-status[data-tone="error"] {
  color: #f87171;
}

.qr-status[data-tone="ok"] {
  color: #4ade80;
}

.qr-status[data-tone="muted"] {
  color: var(--muted);
}

.qr-preview-wrap {
  display: grid;
  gap: 12px;
  justify-items: center;
}

.qr-canvas-frame {
  width: min(100%, 420px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px dashed color-mix(in oklab, var(--accent) 35%, var(--border));
  background:
    linear-gradient(45deg, color-mix(in oklab, var(--panel-soft) 80%, #000 20%) 25%, transparent 25%),
    linear-gradient(-45deg, color-mix(in oklab, var(--panel-soft) 80%, #000 20%) 25%, transparent 25%);
  background-size: 18px 18px;
  overflow: auto;
}

#qr-canvas,
#qr-svg-host svg {
  max-width: 100%;
  height: auto;
  image-rendering: pixelated;
}

.qr-meta {
  width: 100%;
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
}

.qr-meta dt {
  color: var(--muted);
  font-size: 0.78rem;
}

.qr-meta dd {
  margin: 0 0 6px;
  font-weight: 600;
}

.tips-list {
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .qr-layout {
    grid-template-columns: 1fr;
  }

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

  .qr-actions button,
  .qr-actions .download-btn,
  .qr-actions .ghost {
    min-height: 44px;
    flex: 1 1 140px;
  }
}

@media (max-width: 760px) {
  .qr-panel {
    padding: 14px;
  }

  .qr-field textarea {
    min-height: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .tool-header,
  .qr-controls,
  .qr-actions,
  .no-print,
  .tips-list {
    display: none !important;
  }

  body.qr-page {
    background: #fff !important;
    color: #000 !important;
  }

  .qr-layout {
    display: block;
    width: 100%;
    margin: 0;
  }

  .qr-panel {
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 0;
  }

  .qr-canvas-frame {
    border: none;
    background: #fff;
    width: 100%;
    aspect-ratio: auto;
  }

  .print-sheet {
    page-break-inside: avoid;
  }

  .print-sheet[data-orientation="landscape"] {
    /* browser print dialog still controls paper orientation */
  }
}