@import url('https://fonts.googleapis.com/css2?family=Source+Code+Pro&family=Source+Sans+3:wght@400;600;700&display=swap');

/* ── Contrast verification ───────────────────────────
   #231F20 on #ffffff: 16.3:1 — AAA ✓
   #F9423A on #ffffff:  3.58:1 — large/graphic only
   #F9423A on #231F20:  4.56:1 — AA ✓
   #595959 on #ffffff:  7.0:1  — AAA ✓
   #767676 on #ffffff:  4.5:1  — AA ✓ (footer only)
   No body text uses #F9423A anywhere.
   ──────────────────────────────────────────────────── */

:root {
  /* Dark: Vignelli warm black #231F20
     rgb(35,31,32) — 16.3:1 on white — AAA ✓ */
  --black:  #231F20;
  --ink:    #231F20;

  /* Accent: PMS Warm Red C #F9423A
     rgb(249,66,58) — 3.58:1 on white
     graphics and large display only, never body text */
  --accent: #F9423A;

  /* Accent for TEXT on light backgrounds: 5.04:1 on white,
     4.71:1 on --bg — AA. --accent itself stays graphics-only. */
  --accent-ink: #D42B20;

  /* Warm Red on warm black: 4.56:1 — AA ✓ */

  --muted:  #595959;
  --subtle: #6E6E6E;
  --line:   #e2e2e6;
  --bg:     #f7f7f8;
  --white:  #ffffff;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  background: var(--white);
  color: var(--ink);
  font-family: 'Source Sans 3', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  overflow-x: clip;
}

/* ── SKIP LINK ───────────────────────────────────── */

.skip-link {
  position: absolute;
  top: -48px;
  left: 0;
  z-index: 999;
  background: var(--ink);
  color: var(--white);
  padding: 8px 16px;
  font-size: 14px;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  top: 0;
}

/* ── HEADER ──────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  height: 56px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
}

.logo-link {
  display: flex;
  align-items: center;
}

.site-header .logo {
  height: 24px;
  display: block;
}

/* ── HAMBURGER ───────────────────────────────────── */

.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 12px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.2s, opacity 0.2s;
}

.hamburger span + span {
  margin-top: 4px;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── MOBILE NAV ──────────────────────────────────── */

.mobile-nav {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  z-index: 99;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.mobile-nav.open {
  display: block;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  font-size: 16px;
  color: var(--ink);
  text-decoration: none;
  padding: 12px 24px;
  min-height: 44px;
  line-height: 1.4;
}

.mobile-nav a:hover {
  background: var(--bg);
}

.mobile-nav a.active {
  font-weight: 600;
  color: var(--black);
  border-left: 2px solid var(--accent);
  padding-left: 22px;
}

/* ── PAGE LAYOUT ─────────────────────────────────── */

.page-layout {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px 1fr;
}

.content {
  max-width: 800px;
  padding: 0 40px;
  min-width: 0;
}

/* ── SIDEBAR NAV ─────────────────────────────────── */

.sidebar-nav {
  position: sticky;
  top: 56px;
  height: calc(100vh - 56px);
  overflow-y: auto;
  padding-top: 32px;
}

.sidebar-nav a {
  display: block;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  padding: 8px 0 8px 16px;
}

.sidebar-nav a:hover {
  color: var(--black);
}

.sidebar-nav a.active {
  border-left: 2px solid var(--accent);
  padding-left: 14px;
  font-weight: 600;
  color: var(--black);
}

/* ── BREADCRUMB ──────────────────────────────────── */

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
  padding-top: 8px;
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb .sep {
  color: var(--subtle);
  margin: 0 8px;
}

.breadcrumb [aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

/* ── MARK TABS ───────────────────────────────────── */

.mark-tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.mark-tabs::-webkit-scrollbar {
  display: none;
}

.mark-tab {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  padding: 12px 16px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.mark-tab:hover {
  color: var(--black);
}

.mark-tab.active {
  border-bottom-color: var(--accent);
  font-weight: 600;
  color: var(--black);
}

/* ── TYPOGRAPHY ──────────────────────────────────── */

h1 {
  font-size: 40px;
  font-weight: 700;
  color: var(--black);
  line-height: 1.1;
  margin-bottom: 16px;
}

h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--black);
  line-height: 1.2;
  margin-bottom: 16px;
}

h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

p {
  font-size: 17px;
  color: var(--ink);
  line-height: 1.7;
}

p + p {
  margin-top: 24px;
}

.caption {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.examples {
  font-style: italic;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 12px;
}

code {
  font-family: 'Source Code Pro', monospace;
  font-size: 13px;
}

/* ── SPACING ─────────────────────────────────────── */

.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-child {
  border-bottom: none;
}

.section > *:first-child {
  margin-top: 0;
}

.section-gap {
  margin-top: 64px;
}

/* ── HERO ────────────────────────────────────────── */

.hero {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--line);
}

.hero-logo {
  height: 56px;
  display: block;
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: 20px;
  color: var(--ink);
  max-width: 560px;
  line-height: 1.5;
  margin-bottom: 40px;
}

.hero-icons {
  display: flex;
  gap: 32px;
  align-items: center;
}

.hero-icon {
  width: 44px;
  height: 44px;
}

/* ── STATUS BADGE ────────────────────────────────── */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}

.status-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── CALLOUT BOX ─────────────────────────────────── */

.callout-box {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 8px;
  padding: 24px;
  margin-top: 24px;
}

.callout-box p {
  font-size: 16px;
  color: var(--ink);
  line-height: 1.6;
}

/* ── CODE BLOCK (dark) ───────────────────────────── */

.code-block {
  background: #1e1e1e;
  color: #e8e8e8;
  border-radius: 8px;
  padding: 24px;
  font-family: 'Source Code Pro', monospace;
  font-size: 13px;
  overflow-x: auto;
  position: relative;
  margin-top: 16px;
  line-height: 1.6;
  max-width: 100%;
}

.code-block pre {
  margin: 0;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  white-space: pre;
}

.code-block .copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 12px;
  color: #A8A8A8;
  font-family: 'Source Sans 3', system-ui, sans-serif;
  padding: 4px 8px;
  min-height: 32px;
  min-width: 44px;
}

.code-block .copy-btn:hover {
  color: #e8e8e8;
}

/* ── INLINE CODE ─────────────────────────────────── */

.inline-code {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 8px;
  font-family: 'Source Code Pro', monospace;
  font-size: 14px;
  color: var(--ink);
}

/* ── LABEL DISPLAY ───────────────────────────────── */

.label-display {
  display: block;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 16px;
  font-family: 'Source Code Pro', monospace;
  font-size: 15px;
  color: var(--ink);
  margin-top: 12px;
  margin-bottom: 16px;
  position: relative;
  padding-right: 80px;
}

.label-display .copy-btn {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 12px;
  color: var(--subtle);
  font-family: 'Source Sans 3', system-ui, sans-serif;
  padding: 4px 8px;
  min-height: 32px;
}

.label-display .copy-btn:hover {
  color: var(--ink);
}

/* ── COPY BLOCK ──────────────────────────────────── */

.copy-block {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Source Code Pro', monospace;
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 16px;
  position: relative;
  margin-top: 12px;
  padding-right: 80px;
}

.copy-block .copy-btn {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 12px;
  color: var(--subtle);
  font-family: 'Source Sans 3', system-ui, sans-serif;
  padding: 4px 8px;
  min-height: 32px;
}

.copy-block .copy-btn:hover {
  color: var(--ink);
}

/* ── DOWNLOAD BUTTON ─────────────────────────────── */

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  padding: 8px 16px;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  font-family: 'Source Sans 3', system-ui, sans-serif;
  min-height: 40px;
}

.download-btn:hover {
  border-color: var(--accent-ink);
  color: var(--accent-ink);
  background: var(--white);
}

.download-btn:active {
  background: var(--bg);
  border-color: var(--accent-ink);
  color: var(--accent-ink);
}

/* ── LICENSE ROWS ────────────────────────────────── */

.license-rows {
  margin-top: 24px;
}

.license-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.license-row:last-child {
  border-bottom: 1px solid var(--line);
}

.license-row-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--black);
}

.license-row-desc {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.55;
  margin: 0;
}

/* ── MARK CARDS ──────────────────────────────────── */

.mark-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.mark-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 32px 24px;
  display: block;
}

a.mark-card {
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
}

a.mark-card:hover {
  background: var(--bg);
  border-color: var(--ink);
}

a.mark-card:active {
  border-color: var(--accent);
}

.mark-card img {
  width: 40px;
  height: 40px;
  display: block;
  margin-bottom: 16px;
}

.mark-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.mark-card-desc {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.6;
  margin-bottom: 16px;
}

.mark-card-uri {
  font-family: 'Source Code Pro', monospace;
  font-size: 12px;
  color: var(--muted);
  word-break: break-all;
}

/* ── NUMBERED CIRCLE ─────────────────────────────── */

.numbered-circle {
  width: 28px;
  height: 28px;
  background: var(--ink);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ── NUMBERED ROW ────────────────────────────────── */

.numbered-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.numbered-row:last-of-type {
  border-bottom: none;
}

/* ── DIVIDER ─────────────────────────────────────── */

.divider {
  border: none;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}

/* ── HAIRLINE ROW ────────────────────────────────── */

.hairline-row {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.hairline-row:first-of-type {
  border-top: 1px solid var(--line);
}

.hairline-row p {
  font-size: 17px;
}

.hairline-row p + p {
  margin-top: 4px;
}

/* ── PILL TAG ────────────────────────────────────── */

.pill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  margin-bottom: 16px;
}

.pill-tag {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--ink);
  display: inline-block;
}

/* ── MARK ICONS ──────────────────────────────────── */

.mark-icon {
  width: 40px;
  height: 40px;
  display: block;
}

.mark-icon-lg {
  width: 48px;
  height: 48px;
  display: block;
}

.mark-icon-xl {
  width: 64px;
  height: 64px;
  display: block;
}

/* ── MARK GRID (legacy) ──────────────────────────── */

.mark-grid {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.mark-grid-item {
  text-align: left;
}

.mark-grid-item p {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

.download-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
  align-items: center;
}

/* ── LOGO PREVIEW ────────────────────────────────── */

.logo-preview {
  display: flex;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 24px;
}

.logo-preview-light {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-right: none;
  border-radius: 8px 0 0 8px;
}

.logo-preview-dark {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: var(--black);
  border-radius: 0 8px 8px 0;
}

/* ── CANONICAL URI ───────────────────────────────── */

.canonical-uri {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.canonical-uri .caption {
  flex-shrink: 0;
}

.canonical-uri .copy-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 12px;
  color: var(--subtle);
  font-family: 'Source Sans 3', system-ui, sans-serif;
  padding: 4px 8px;
  min-height: 32px;
}

.canonical-uri .copy-btn:hover {
  color: var(--ink);
}

/* ── FIELD ROWS ──────────────────────────────────── */

.field-rows {
  margin-top: 16px;
}

.field-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
  align-items: center;
}

.field-row:last-child {
  border-bottom: 1px solid var(--line);
}

.field-row .inline-code {
  font-size: 14px;
}

.field-row-role {
  font-size: 14px;
  color: var(--muted);
}

/* ── GENERATOR ───────────────────────────────────── */

.gen-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.gen-card {
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  cursor: pointer;
  background: var(--white);
  transition: border-color 0.15s, background 0.15s;
  text-align: left;
  width: 100%;
  font-family: 'Source Sans 3', system-ui, sans-serif;
  min-height: 44px;
}

.gen-card:hover {
  background: var(--bg);
  border-color: var(--ink);
}

.gen-card:active {
  border-color: var(--accent);
}

.gen-card.selected {
  border: 2px solid var(--accent);
  background: var(--bg);
  padding: 15px;
}

.gen-card img {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.gen-card-text strong {
  display: block;
  font-size: 16px;
  color: var(--black);
  margin-bottom: 4px;
}

.gen-card-text span {
  font-size: 14px;
  color: var(--ink);
}

.gen-inputs {
  margin-top: 24px;
}

.gen-input-group {
  margin-bottom: 12px;
}

.gen-input-group label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
  font-weight: 600;
}

.gen-input-group input {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 16px;
  color: var(--ink);
  font-family: 'Source Sans 3', system-ui, sans-serif;
  background: var(--white);
  min-height: 44px;
}

.gen-input-group input:focus-visible {
  border-color: var(--accent);
}

.gen-tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  margin-top: 32px;
  overflow-x: auto;
  white-space: nowrap;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.gen-tabs::-webkit-scrollbar {
  display: none;
}

.gen-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  font-family: 'Source Sans 3', system-ui, sans-serif;
  white-space: nowrap;
  min-height: 44px;
}

.gen-tab.active {
  border-bottom-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.gen-panel {
  display: none;
  padding-top: 16px;
}

.gen-panel.active {
  display: block;
}

.gen-placeholder {
  font-size: 14px;
  color: var(--muted);
  text-align: center;
  padding: 32px;
}

.gen-plain-label {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.gen-plain-label .caption {
  margin-bottom: 8px;
}

/* ── USAGE NOTES ─────────────────────────────────── */

.usage-notes {
  margin-top: 16px;
}

.usage-notes .hairline-row p {
  font-size: 14px;
  color: var(--muted);
}

/* ── CONTACT ROWS ────────────────────────────────── */

.contact-row {
  margin-bottom: 12px;
}

.contact-row strong {
  font-size: 14px;
  color: var(--black);
}

.contact-row span {
  font-size: 14px;
  color: var(--muted);
}

/* ── FOOTER ──────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0;
}

.site-footer p {
  font-size: 13px;
  color: var(--subtle);
  line-height: 1.6;
}

.site-footer p + p {
  margin-top: 4px;
}

/* ── FOOTER ATTRIBUTION ──────────────────────────── */

.footer-mark {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.mm-attribution {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

.mm-attribution:hover {
  color: var(--black);
}

.mm-attribution img {
  display: block;
  flex: none;
}

/* ── EYEBROW LABEL ───────────────────────────────── */

.eyebrow {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  margin-top: 24px;
}

/* ── ICON SWATCH ─────────────────────────────────── */

.icon-swatch {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 12px;
}

/* ── ICON GRID ───────────────────────────────────── */

.icon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.icon-grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.icon-grid-item {
  text-align: left;
}

.icon-grid-item .icon-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
}

/* ── SIZE LINKS (PNG downloads) ──────────────────── */

.size-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.size-link {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
}

.size-link:hover {
  border-color: var(--accent-ink);
  color: var(--accent-ink);
}

/* ── FULL-WIDTH PACK BUTTON ──────────────────────── */

.btn-pack {
  display: block;
  width: 100%;
  background: var(--bg);
  color: var(--black);
  padding: 16px 24px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  font-family: 'Source Sans 3', system-ui, sans-serif;
  border: 2px solid var(--line);
  cursor: pointer;
  margin-top: 24px;
}

.btn-pack:hover {
  border-color: var(--accent-ink);
  color: var(--accent-ink);
}

/* ── COLOPHON ROW ────────────────────────────────── */

.colophon-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.colophon-row:last-of-type {
  border-bottom: 1px solid var(--line);
}

.colophon-badge .mm-attribution {
  font-size: 14px;
}

.colophon-badge .mm-attribution img {
  width: 24px;
  height: 24px;
}

.colophon-content strong {
  display: block;
  font-size: 15px;
  color: var(--black);
  margin-bottom: 4px;
}

.colophon-content p {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.55;
}

/* ── SOCIAL LINKS ────────────────────────────────── */

.social-links {
  display: flex;
  gap: 24px;
  margin-top: 16px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}

.social-links a:hover {
  color: var(--black);
}

.social-links svg {
  flex-shrink: 0;
}

/* ── SCREEN READER ONLY ──────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── ERROR MESSAGE ───────────────────────────────── */

.error-msg {
  font-size: 14px;
  color: var(--ink);
  margin-top: 12px;
  padding: 8px 12px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 4px;
}

/* ── ARIA LIVE (copy feedback) ───────────────────── */

.copy-status {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── FOCUS VISIBLE ───────────────────────────────── */

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ── DESKTOP (1024px+) ───────────────────────────── */

@media (min-width: 1024px) {
  .header-inner {
    padding: 0 40px 0 260px;
  }
}

/* ── TABLET (600 – 1023px) ───────────────────────── */

@media (max-width: 1023px) {
  .page-layout {
    display: block;
  }

  .sidebar-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .content {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 32px;
  }

  .header-inner {
    padding: 0 32px;
  }

  .site-footer {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 32px;
  }

  h1 { font-size: 34px; }
  h2 { font-size: 22px; }
  p  { font-size: 16px; }

  .section {
    padding: 48px 0;
  }

  .hero {
    padding: 48px 0;
  }

  .mark-cards {
    grid-template-columns: 1fr;
  }

  .icon-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .colophon-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* ── MOBILE (< 600px) ───────────────────────────── */

@media (max-width: 599px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    padding: 0 20px;
  }

  .content {
    padding: 0 20px;
  }

  .site-footer {
    padding: 32px 20px;
  }

  h1 { font-size: 28px; }
  h2 { font-size: 20px; }

  .section {
    padding: 36px 0;
  }

  .hero {
    padding: 48px 0 36px;
  }

  .hero-logo {
    height: 40px;
  }

  .hero-icons {
    gap: 24px;
  }

  .callout-box {
    padding: 24px;
  }

  .divider {
    margin: 24px 0;
  }

  .mark-card {
    padding: 24px;
  }

  .section-gap {
    margin-top: 40px;
  }

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

  .field-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .code-block {
    padding: 16px;
  }

  .pill-tags {
    flex-direction: column;
  }

  .icon-grid {
    grid-template-columns: 1fr;
  }

  .download-btn {
    min-height: 44px;
  }

  .mobile-nav a {
    padding: 12px 20px;
  }

  .logo-preview {
    flex-direction: column;
  }

  .logo-preview-light {
    border-right: 1px solid var(--line);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
  }

  .logo-preview-dark {
    border-radius: 0 0 8px 8px;
  }
}

/* ── REDUCED MOTION ──────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}