/* Circle brochure — styled to match brookcronin.com */

/* Fonts ------------------------------------------------------------ */

@font-face {
  font-family: 'Source Serif 4';
  src: url('/fonts/SourceSerif4-Variable.ttf') format('truetype-variations');
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Source Serif 4';
  src: url('/fonts/SourceSerif4-Italic-Variable.ttf') format('truetype-variations');
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Atkinson Hyperlegible';
  src: url('/fonts/AtkinsonHyperlegible-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Atkinson Hyperlegible';
  src: url('/fonts/AtkinsonHyperlegible-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* Tokens ----------------------------------------------------------- */

:root {
  --serif: 'Source Serif 4', Charter, 'Iowan Old Style', Georgia, serif;
  --sans:  'Atkinson Hyperlegible', ui-sans-serif, system-ui, -apple-system, sans-serif;

  --ink:        #1a1815;
  --ink-soft:   #4a4641;
  --ink-faint:  #8a857d;
  --paper:      #fbf9f4;
  --rule:       #d9d3c5;
  --tint:       #f1ecdf;
  --link:       #5a3a1a;
  --link-hover: #1a1815;

  --measure: 34rem;
  --leading: 1.65;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:        #e8e3d8;
    --ink-soft:   #b8b1a3;
    --ink-faint:  #7a7468;
    --paper:      #1a1815;
    --rule:       #3a3530;
    --tint:       #24211d;
    --link:       #c9a578;
    --link-hover: #f0e9d8;
  }
}

/* Base ------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1rem;
  line-height: var(--leading);
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--ink);
  color: var(--paper);
}

/* Layout ----------------------------------------------------------- */

.page {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

@media (min-width: 40rem) {
  .page { padding: 6rem 2rem 8rem; }
}

/* Masthead --------------------------------------------------------- */

.masthead {
  margin-bottom: 4rem;
}

.masthead h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.75rem;
  line-height: 1.2;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

.masthead h1 a {
  color: var(--ink);
  text-decoration: none;
  border: none;
}

.masthead .tagline {
  font-family: var(--sans);
  font-size: 0.8125rem;
  color: var(--ink-faint);
  margin: 0;
  letter-spacing: 0.02em;
}

/* Typography ------------------------------------------------------- */

h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: -0.005em;
}

article h2 {
  font-size: 1.25rem;
  margin: 3rem 0 1rem;
  font-weight: 500;
}

article h3 {
  font-size: 1rem;
  margin: 2rem 0 0.75rem;
  font-weight: 600;
}

p {
  margin: 0 0 1.25rem;
  hyphens: auto;
  -webkit-hyphens: auto;
}

em, i { font-style: italic; }
strong, b { font-weight: 600; }

a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color 0.15s, border-color 0.15s;
}

a:hover {
  color: var(--link-hover);
  border-bottom-color: var(--link-hover);
}

/* Verifier form ---------------------------------------------------- */

.verifier {
  margin: 1.5rem 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.verifier-label {
  font-family: var(--sans);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}

.verifier-label code {
  text-transform: none;
  letter-spacing: 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.verifier-input {
  width: 100%;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.45;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--tint);
  color: var(--ink);
  resize: vertical;
  min-height: 5.5rem;
  word-break: break-all;
}

.verifier-input:focus {
  outline: 2px solid var(--link);
  outline-offset: 1px;
  border-color: transparent;
}

.verifier-submit {
  align-self: flex-start;
  /* inline-flex + align-items: center normalises the box across button
   * and anchor elements that share this class (anchors otherwise inherit
   * the surrounding text's line-height and render taller). */
  display: inline-flex;
  align-items: center;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.15s, background 0.15s;
}

.verifier-submit:hover:not(:disabled) { opacity: 0.85; }
.verifier-submit:disabled { opacity: 0.55; cursor: progress; }

/* Verifier result -------------------------------------------------- */

.verifier-result {
  margin: 0.5rem 0 2.5rem;
  padding: 1rem 1.25rem;
  border-radius: 4px;
  border: 1px solid var(--rule);
  background: var(--tint);
  font-family: var(--serif);
  font-size: 0.95rem;
  line-height: 1.55;
}

.verifier-result.verifier-valid {
  border-color: #6f8a4f;
  background: color-mix(in oklab, var(--tint) 60%, #6f8a4f 12%);
}

.verifier-result.verifier-invalid {
  border-color: #a05a3a;
  background: color-mix(in oklab, var(--tint) 60%, #a05a3a 12%);
}

.verifier-result.verifier-error {
  border-color: var(--ink-faint);
}

.verifier-result.verifier-pending {
  color: var(--ink-soft);
}

.verifier-verdict {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.verifier-valid .verifier-verdict { color: #4a6a30; }
.verifier-invalid .verifier-verdict { color: #8a4525; }

@media (prefers-color-scheme: dark) {
  .verifier-valid .verifier-verdict { color: #a8c787; }
  .verifier-invalid .verifier-verdict { color: #d99c7a; }
}

.verifier-summary {
  margin: 0 0 0.4rem;
}

.verifier-summary-secondary {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.verifier-details {
  margin-top: 0.8rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.verifier-details summary {
  cursor: pointer;
  color: var(--ink-soft);
  user-select: none;
}

.verifier-details summary:hover { color: var(--ink); }

.verifier-details dl {
  margin: 0.6rem 0 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.3rem 0.8rem;
}

.verifier-details dt {
  font-weight: 700;
  color: var(--ink-soft);
}

.verifier-details dd {
  margin: 0;
  word-break: break-all;
}

.verifier-details code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  color: var(--ink);
}

/* Pickup blocks ---------------------------------------------------- */

.pickup {
  margin: 1.5rem 0 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--tint);
  border: 1px solid var(--rule);
  border-radius: 4px;
}

.pickup-label {
  font-family: var(--sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin: 0 0 0.75rem;
}

.pickup-body {
  font-family: var(--serif);
  font-size: 1rem;
  margin: 0 0 1rem;
  line-height: 1.55;
}

.pickup-code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8125rem;
  line-height: 1.5;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.6rem 0.8rem;
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--ink);
  overflow-x: auto;
}

.pickup-hint {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin: 0.6rem 0 0;
}

.pickup-hint a { color: var(--ink-soft); }

/* Lede ------------------------------------------------------------- */

.lede {
  font-size: 1.125rem;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 2rem;
}

.lede em { color: var(--ink-soft); }

/* Side notes ------------------------------------------------------- */

aside.aside {
  font-family: var(--sans);
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--ink-soft);
  border-left: 2px solid var(--rule);
  padding: 0 0 0 1rem;
  margin: 1.5rem 0;
}

/* Verifier modifiers — used by /sign and any future form pages -------- */

/* Free-text variant of .verifier-input — used for passphrase, label, and
 * any non-token inputs that want serif rather than monospace. */
.verifier-input.verifier-input-plain {
  font-family: var(--serif);
  font-size: 0.95rem;
  min-height: 0;  /* override .verifier-input's textarea-shaped min-height */
}

/* Select with a chevron. */
.verifier-input.verifier-input-select {
  font-family: var(--sans);
  font-size: 0.9rem;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%),
                    linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 2.5rem;
  min-height: 0;
  cursor: pointer;
}

/* Outlined (secondary) variant of .verifier-submit. */
.verifier-submit.verifier-submit-secondary {
  background: transparent;
  color: var(--ink);
}

/* Inline checkbox + label pair (e.g. "Linkable mode"). */
.verifier-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}

.verifier-checkbox input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--link);
  cursor: pointer;
}

/* Row of action buttons. */
.verifier-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

/* Inline text-button (e.g. "Lock identity"). */
.verifier-link-btn {
  background: none;
  border: none;
  padding: 0;
  margin: 0 0 0 0.5rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--link);
  text-decoration: underline;
  cursor: pointer;
}

.verifier-link-btn:hover { color: var(--link-hover); }

/* Footer ----------------------------------------------------------- */

.colophon {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
  line-height: 1.55;
}

.colophon p { margin: 0 0 0.4rem; }
.colophon a { color: var(--ink-soft); }
.colophon a:hover { color: var(--ink); }

.colophon .canary {
  margin-top: 0.8rem;
  font-style: italic;
}