/* Tool-specific: QR Code Generator
   Layout-only. All colors come from src/shared/css/base.css tokens. */

#input-panel #input {
  font-family: var(--font-mono, monospace);
  min-height: 96px;
}

#input-panel #input-url {
  font-family: var(--font-mono, monospace);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-rule);
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  border-radius: var(--radius-0);
  font-size: var(--text-sm);
}

/* Privacy callout — reuses the JWT pattern (signal-soft + signal accent). */
.privacy-callout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-5);
  background: var(--color-signal-soft);
  border-left: 2px solid var(--color-signal);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

[dir="rtl"] .privacy-callout {
  border-left: 0;
  border-right: 2px solid var(--color-signal);
}

.privacy-callout__glyph {
  color: var(--color-signal);
  font-weight: 700;
  flex-shrink: 0;
}

.privacy-callout__body {
  flex: 1;
  line-height: var(--leading-snug);
}

.privacy-callout__title {
  display: block;
  font-weight: 700;
  margin-bottom: 2px;
}

.privacy-callout__detail {
  display: block;
  font-family: var(--font-sans);
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
}

/* Split layout: controls left, preview right. Collapses to one column on
   narrow viewports. */
.qr-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

@media (max-width: 880px) {
  .qr-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

.qr-controls .panel {
  margin-bottom: var(--space-4);
}

/* Segmented control reused from Hash Generator pattern. */
.segmented {
  display: inline-flex;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-0);
  overflow: hidden;
  background: var(--color-bg-elevated);
}

.segmented input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented label {
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  cursor: pointer;
  border-right: 1px solid var(--color-rule);
  user-select: none;
}

.segmented label:last-of-type {
  border-right: 0;
}

.segmented input[type="radio"]:checked + label {
  background: var(--color-signal-soft);
  color: var(--color-signal);
  font-weight: 600;
}

/* Mode row sits above the input textarea. */
.qr-mode-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.qr-options__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.qr-options__hint {
  display: block;
  margin-top: 2px;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* Options grid: each row is label + control + hint. The colors row is a
   sub-grid pairing two color pickers with the reset button. */
.qr-options-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.qr-option {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.qr-option select,
.qr-option input[type="number"] {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-rule);
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  border-radius: var(--radius-0);
}

.qr-option input[type="range"] {
  flex: 1 1 160px;
  max-width: 240px;
}

.qr-option__value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
  min-width: 2.5ch;
  text-align: right;
}

/* Color picker grid: two color inputs side-by-side, with a reset button. */
.qr-option--colors {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) auto;
  align-items: end;
  gap: var(--space-3);
}

.qr-color-pair {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.qr-color-pair input[type="color"] {
  width: 100%;
  min-height: 38px;
  padding: 2px;
  border: 1px solid var(--color-rule);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-0);
  cursor: pointer;
}

@media (max-width: 540px) {
  .qr-option--colors {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Preview area — keeps the QR centered and bounded so very-large pixel sizes
   do not blow out the layout. */
.qr-preview {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  padding: var(--space-3);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-0);
}

.qr-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.qr-svg {
  display: none;
}

.qr-svg svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.qr-preview.is-empty .qr-canvas,
.qr-preview.is-empty .qr-svg {
  display: none;
}

.qr-empty {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  text-align: center;
  padding: var(--space-4);
}

.qr-preview.is-empty .qr-empty {
  display: block;
}

/* Status line under the input form. */
.qr-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-left: var(--space-3);
}

.qr-status[data-state="error"] {
  color: var(--color-signal);
}

.qr-status[data-state="ready"] {
  color: var(--color-ink);
}

/* Download row sits below the preview panel. */
.qr-download-row {
  margin-top: var(--space-3);
}

/* RTL: the split layout naturally flips via CSS grid auto-flow direction; no
   override needed. The status line uses logical margin so it flips, too. */
[dir="rtl"] .qr-status {
  margin-left: 0;
  margin-right: var(--space-3);
}

/* QR canvas/SVG output from qr-code-styling. The library appends either a
   <canvas> or an <svg> directly into the holder element; both should size
   responsively to the preview area. */
.qr-svg canvas,
.qr-svg svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* When qr-code-styling has injected a canvas/svg, show the holder. The
   legacy .qr-canvas + .is-empty visibility logic continues to gate the
   placeholder, but the holder itself must always be displayable so the
   library's children are visible. */
.qr-svg {
  display: block;
}

.qr-preview.is-empty .qr-svg {
  display: none;
}

/* Logo upload control — sits in the options grid, dashed-border dropzone
   feel via a thin terracotta-ish border. Reuses signal-soft tints. */
.qr-option--logo input[type="file"] {
  flex: 1 1 220px;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-ink);
  padding: var(--space-2);
  border: 1px dashed var(--color-rule);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-0);
  cursor: pointer;
}

.qr-option--logo input[type="file"]:hover {
  border-color: var(--color-signal);
}

.btn--small {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
}

/* Help-tooltip icons next to control labels.
   Reuses the .badge--deprecated tooltip pattern built for the Hash Generator
   (task 0056) — same CSS architecture, just a different anchor class so the
   selector lists don't collide. Touch behaviour is driven by JS toggling
   [data-open] (see main.js). */
.help-tooltip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  margin-left: var(--space-1);
  background: var(--color-signal-soft);
  color: var(--color-signal);
  border: 1px solid var(--color-signal);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  cursor: help;
  position: relative;
  user-select: none;
  vertical-align: middle;
}

.help-tooltip:focus,
.help-tooltip:focus-visible {
  outline: 2px solid var(--color-signal);
  outline-offset: 2px;
}

.help-tooltip::after {
  content: attr(title);
  position: absolute;
  bottom: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  white-space: normal;
  width: max-content;
  max-width: 22rem;
  padding: var(--space-2) var(--space-3);
  background: var(--color-ink);
  color: var(--color-bg-elevated);
  border: 1px solid var(--color-rule);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  line-height: 1.5;
  text-align: left;
  box-shadow: 0 4px 12px rgba(20, 17, 13, 0.15);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 120ms ease, visibility 0s linear 120ms;
  z-index: 10;
}

.help-tooltip::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-ink);
  opacity: 0;
  visibility: hidden;
  transition: opacity 120ms ease, visibility 0s linear 120ms;
  z-index: 11;
}

.help-tooltip:hover::after,
.help-tooltip:focus::after,
.help-tooltip:focus-visible::after,
.help-tooltip[data-open="true"]::after,
.help-tooltip:hover::before,
.help-tooltip:focus::before,
.help-tooltip:focus-visible::before,
.help-tooltip[data-open="true"]::before {
  opacity: 1;
  visibility: visible;
  transition: opacity 120ms ease;
}

/* RTL — anchor positions use left: 50% relative to the icon's own box, so the
   LTR centring math works identically. Empty selector documents intent. */
[dir="rtl"] .help-tooltip::after,
[dir="rtl"] .help-tooltip::before { /* anchor positions still work — same left:50% logic */ }