/* KeepQR app stylesheet — mobile-first, logical properties only (ADR 0014 §6 /
   design-brief §4). WCAG 2.1 AA: text contrast ≥ 4.5:1, control borders ≥ 3:1
   (1.4.11), visible focus ring (2.4.7), tap targets ≥ 44px (brief §4), and
   prefers-reduced-motion honored. Light + dark via color-scheme tokens. No
   third-party fonts/assets — system font stack only (design-brief §4). */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #515151; /* ≥ 7:1 on --bg */
  --accent: #1d4ed8; /* white text ≥ 4.5:1 */
  --on-accent: #ffffff;
  --input-border: #6b6b6b; /* ≥ 3:1 on --bg (1.4.11) */
  --divider: #d4d4d4;
  --accent-tint: #eef2ff;
  --danger: #b00020; /* ≥ 4.5:1 on --bg */
  --warn-tint: #fff4e5;
  --radius: 0.5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #ededed;
    --muted: #b3b3b3; /* ≥ 4.5:1 on --bg */
    --accent: #93b4ff;
    --on-accent: #06122b;
    --input-border: #9a9a9a; /* ≥ 3:1 on --bg */
    --divider: #3a3a3a;
    --accent-tint: #1a2238;
    --danger: #ff9aa2; /* ≥ 4.5:1 on dark --bg */
    --warn-tint: #2a2113;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin-inline: auto;
  max-inline-size: 40rem;
  padding-inline: 1rem;
  padding-block: 1.5rem;
  line-height: 1.5;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  padding-block-end: 1rem;
  border-block-end: 1px solid var(--divider);
}

.wordmark {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}
.wordmark:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}
/* "QR" in the brand accent — matches the favicon / OG mark (#242, #286). */
.wordmark-qr {
  color: var(--accent);
}

.recover-link {
  font-size: 0.875rem;
}

h1 {
  font-size: 1.75rem;
  line-height: 1.2;
  margin-block: 1.25rem 0.5rem;
}

h2 {
  font-size: 1.125rem;
  margin-block: 1.5rem 0.5rem;
}

.lede {
  font-size: 1.0625rem;
  margin-block: 0 1rem;
}

.trust,
.disclosure,
.recover-link,
footer {
  font-size: 0.875rem;
  color: var(--muted);
}

.create-form {
  margin-block: 1.5rem;
}

label {
  display: block;
  font-weight: 600;
  color: var(--fg);
  margin-block-end: 0.375rem;
}

input[type="url"] {
  display: block;
  inline-size: 100%;
  min-block-size: 44px;
  padding-inline: 0.75rem;
  padding-block: 0.5rem;
  font-size: 1rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
}

input[aria-invalid="true"] {
  border-color: #b00020;
  border-width: 2px;
}

.disclosure {
  margin-block: 0.625rem 1rem;
}

.cf-turnstile {
  margin-block: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: 44px;
  min-inline-size: 44px;
  inline-size: 100%;
  padding-inline: 1rem;
  padding-block: 0.625rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--on-accent);
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
}

.tiers ul {
  list-style: none;
  padding-inline-start: 0;
  margin-block: 0;
}

.tiers li {
  padding-block: 0.5rem;
  border-block-end: 1px solid var(--divider);
}

.tier-headline {
  font-weight: 700;
  background: var(--accent-tint);
  padding-inline: 0.75rem;
  border-radius: var(--radius);
}

footer {
  margin-block-start: 2rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--divider);
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-block-start: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- Cross-document View Transitions (ADR 0027 P1) ----
   Same-origin navigations crossfade in Chrome 126+ / Safari 18.2+; browsers
   without support (Firefox) ignore the at-rule and snap as before. Reloads
   (navigationType "reload", e.g. the success-page poll) are excluded by the
   spec. The Polar checkout hop is cross-origin and snaps in both directions. */
@media not (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: auto;
  }
}

/* The global reduced-motion block above cannot reach the view-transition
   pseudo-tree (it hangs off :root, and `*` does not match pseudo-elements),
   so disable its animations explicitly for UAs that might still create a
   transition. */
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*),
  ::view-transition-old(*),
  ::view-transition-new(*) {
    animation: none !important;
  }
}

/* ---- Manage page (M7b; design 6B-01) — logical properties only (ADR 0014) ---- */

/* Visually-hidden but screen-reader-available labels (WCAG 1.3.1 / 3.3.2). */
.visually-hidden {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.btn--secondary {
  background: var(--bg);
  color: var(--accent);
  border-color: var(--input-border);
}
.btn--ghost {
  background: transparent;
  color: var(--accent);
  border-color: transparent;
}
.btn--danger {
  background: var(--bg);
  color: var(--danger);
  border-color: var(--danger);
}

.input {
  display: block;
  inline-size: 100%;
  min-block-size: 44px;
  padding-inline: 0.75rem;
  padding-block: 0.5rem;
  margin-block-end: 0.5rem;
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
}
textarea.input {
  block-size: auto;
}

.topbar {
  border-block-end: 0;
  padding-block-end: 0.5rem;
}
.id-badge {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--muted);
  font-size: 0.875rem;
}

.m-summary {
  display: block;
  margin-block: 1rem;
  padding: 1rem;
  border: 1px solid var(--divider);
  border-radius: var(--radius);
}
.pill {
  display: inline-block;
  font-weight: 700;
  padding-inline: 0.625rem;
  padding-block: 0.25rem;
  border-radius: 999px;
  background: var(--accent-tint);
  color: var(--fg);
}
.dest {
  margin-block: 0.75rem 0.5rem;
}
.dest .label {
  display: block;
  font-size: 0.8125rem;
  color: var(--muted);
}
.dest-url {
  overflow-wrap: anywhere;
}

dl.m-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-block: 0.5rem 0;
}
.m-facts .grp {
  display: flex;
  flex-direction: column;
}
.m-facts dt {
  font-size: 0.8125rem;
  color: var(--muted);
}
.m-facts dd {
  margin-inline-start: 0;
  font-weight: 600;
}

.m-action {
  margin-block: 1rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--divider);
}
.m-action.is-prominent {
  padding: 1rem;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
}
.m-action.is-disabled {
  opacity: 0.7;
}

.m-section-h.is-danger {
  margin-block-start: 1.5rem;
  color: var(--danger);
  border-block-start: 1px solid var(--danger);
  padding-block-start: 1rem;
}

.m-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.m-downloads .btn {
  inline-size: auto;
}

.scan-pending {
  padding: 0.75rem;
  margin-block-end: 0.75rem;
  background: var(--accent-tint);
  border-radius: var(--radius);
}
.scan-pending .queued-url {
  display: block;
  margin-block-start: 0.375rem;
  overflow-wrap: anywhere;
}

.m-note {
  padding: 0.75rem;
  margin-block: 0.75rem;
  background: var(--accent-tint);
  border-radius: var(--radius);
}
.m-note.is-warn {
  background: var(--warn-tint);
}
.m-note.is-danger {
  background: color-mix(in srgb, var(--danger) 12%, var(--bg));
}

.m-foot-warn {
  margin-block-start: 2rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--divider);
  font-size: 0.875rem;
}
.m-foot-d11 {
  color: var(--muted);
}

/* ---- Recent-activity panel (M7j; design 6B-01g) ---- */
.m-activity {
  margin-block: 1rem;
}
.m-activity summary {
  cursor: pointer;
  font-weight: 600;
  padding-block: 0.5rem;
}
.m-activity table {
  inline-size: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}
.m-activity th,
.m-activity td {
  text-align: start;
  padding-inline-end: 0.75rem;
  padding-block: 0.375rem;
  border-block-end: 1px solid var(--divider);
  vertical-align: top;
}
.m-activity thead th {
  color: var(--muted);
  font-weight: 600;
}

/* Blocked-URL message revealed behind the QR when it shatters (z-index below the SVG). */
.qr-preview { position: relative; display: inline-block; max-width: 100%; }
.qr-preview svg.qr { position: relative; z-index: 1; max-width: 100%; height: auto; }
.blocked-msg {
  position: absolute; inset: 0; z-index: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; color: #b91c1c; padding: 8%; box-sizing: border-box;
}
.blocked-msg[hidden] { display: none; }
.blocked-ico { font-size: 2.5rem; line-height: 1; }
.blocked-title { font-weight: 800; margin: 0.3rem 0 0.1rem; }
.blocked-body { font-size: 0.8rem; color: #6b7280; margin: 0; }

/* Animated QR teaser + gallery (specs/animated-qr.md §6). Previews keep the
   full quiet zone and are sized by the wrapper, never by trimming margin. */
.aq-teaser .aq-preview svg { width: 160px; height: auto; display: block; margin: 0 auto; }
.aq-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }
.aq-tile {
  content-visibility: auto;        /* off-screen tiles neither render nor animate */
  contain-intrinsic-size: 340px;
  text-align: center;
}
.aq-tile .aq-preview svg { width: 100%; max-width: 240px; height: auto; }
.aq-tile h2 { font-size: 1rem; margin: 0.5rem 0; }

/* ---- Success page: the management/access link — an emphasised card that is both
   clickable (opens /m/{token}) and copyable. Logical properties only (ADR 0014). ---- */
.management {
  margin-block: 1.5rem;
  padding: 1rem;
  background: var(--accent-tint);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
}
.management h2 {
  margin-block: 0 0.25rem;
}
.save-link-label {
  margin-block: 0 0.75rem;
  font-weight: 600;
  color: var(--fg);
}
/* The link itself, rendered as a tappable field. */
.manage-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-block-size: 44px;
  padding-inline: 0.75rem;
  padding-block: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--fg);
  text-decoration: none;
}
.manage-link:hover,
.manage-link:focus-visible {
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.manage-link__icon {
  flex: none;
}
/* Truncation backstop: keep the URL on one line and ellipsis any overflow. */
.manage-link__url {
  flex: 1 1 auto;
  min-inline-size: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 0.875rem;
}
/* Host stays proportional (narrower, readable); only the opaque token is monospace. */
.manage-link__host {
  font-weight: 700;
  color: var(--fg);
}
.manage-link__path {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.manage-link__go {
  flex: none;
  color: var(--accent);
  font-weight: 700;
}
.manage-copy {
  margin-block-start: 0.625rem;
}
.manage-copy.is-copied {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}
.share-actions {
  margin-block: 0.75rem 0;
  font-size: 0.9rem;
}
.share-actions a {
  color: var(--accent);
}

/* ---- Static legal pages (M12a / #244) — readable long-form prose + provider table ---- */
.legal {
  max-inline-size: 42rem;
}
.legal h1 {
  margin-block-end: 0.25rem;
}
.legal-effective {
  margin-block-start: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.legal section {
  margin-block-start: 1.5rem;
}
.legal h2 {
  font-size: 1.15rem;
}
.legal ul {
  padding-inline-start: 1.25rem;
}
.legal-table {
  inline-size: 100%;
  border-collapse: collapse;
  margin-block: 0.5rem;
}
.legal-table th,
.legal-table td {
  text-align: start;
  padding: 0.5rem;
  border-block-end: 1px solid var(--divider);
  vertical-align: top;
}
.legal-table thead th {
  color: var(--muted);
  font-weight: 600;
}

/* ---- Create scan-progress steps (#285) — calm what+why during the check ---- */
.scan-steps {
  list-style: none;
  padding-inline-start: 0;
  margin-block: 0.75rem 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.scan-step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
}
.scan-step::before {
  content: "○"; /* pending */
  color: var(--muted);
}
.scan-step[aria-current="step"] {
  color: var(--fg);
  font-weight: 600;
}
.scan-step[aria-current="step"]::before {
  content: "◍"; /* in progress */
  color: var(--accent);
}
.scan-step[data-done] {
  color: var(--muted);
}
.scan-step[data-done]::before {
  content: "✓"; /* done */
  color: var(--accent);
}
.scan-why {
  margin-block: 0.25rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}