:root {
  --color-eu-blue: #003399;
  --color-eu-blue-dark: #002266;
  --color-eu-blue-light: #1a4db3;
  --color-eu-yellow: #ffcc00;
  --color-eu-yellow-soft: #fff4cc;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-elevated: #ffffff;
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-success: #15803d;
  --color-success-bg: #f0fdf4;
  --radius-sm: 3px;
  --radius: 4px;
  --radius-lg: 6px;
  --radius-xl: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 2px 8px rgba(15, 23, 42, 0.08);
  --font-sans:
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --header-height: 4.5rem;
  --content-width: 680px;
  --content-wide: 760px;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* ── Skip link ───────────────────────────────────────────────── */

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 10000;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: var(--color-background);
  color: var(--color-eu-blue);
  border: 2px solid var(--color-eu-blue);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  line-height: 1.6;
  min-height: 100vh;
}

.page-shell {
  min-height: calc(100vh - 2.5rem);
  display: flex;
  flex-direction: column;
}

/* ── Demo banner ───────────────────────────────────────────── */

.demo-banner {
  background: var(--color-eu-yellow);
  color: var(--color-text);
  text-align: center;
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

/* ── Header ──────────────────────────────────────────────────── */

.site-header {
  background: var(--color-eu-blue);
  color: white;
  padding: 0 1.5rem;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-eu-blue-dark);
}

.site-header__brand {
  width: 100%;
  max-width: var(--content-wide);
  display: flex;
  align-items: center;
  gap: 1rem;
  color: inherit;
  text-decoration: none;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
}

.eu-emblem {
  flex-shrink: 0;
  height: 2.5rem;
  width: auto;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

.site-header__title {
  font-size: 1.125rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.site-header__subtitle {
  font-size: 0.8125rem;
  opacity: 0.85;
  font-weight: 400;
  margin-top: 0.125rem;
}

/* ── Main layout ───────────────────────────────────────────── */

.page-main {
  flex: 1;
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.page-main--wide {
  max-width: var(--content-wide);
}

.page-main--center {
  text-align: center;
}

.page-panel {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2rem;
}

.page-panel--flat {
  box-shadow: var(--shadow-sm);
}

/* ── Typography ──────────────────────────────────────────────── */

.page-eyebrow {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

h1,
h2 {
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 0.75rem;
  color: var(--color-eu-blue-dark);
}

h3 {
  font-size: 1rem;
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  max-width: 52ch;
}

.page-main--center .lead {
  margin-left: auto;
  margin-right: auto;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

p:last-child {
  margin-bottom: 0;
}

code {
  background: rgba(0, 51, 153, 0.06);
  color: var(--color-eu-blue-dark);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.875em;
  font-family: var(--font-mono);
}

a {
  color: var(--color-eu-blue);
  text-decoration-color: rgba(0, 51, 153, 0.35);
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-color: var(--color-eu-blue);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text-muted);
  margin-top: 1.5rem;
}

.back-link:hover {
  color: var(--color-eu-blue);
}

/* ── Hero (landing) ──────────────────────────────────────────── */

.hero {
  text-align: center;
  padding: 1rem 0 2rem;
}

.hero .lead {
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.hero-note {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ── Flow steps ──────────────────────────────────────────────── */

.flow-steps {
  --step-badge-size: 2.375rem;
  --step-marker-col: 2.5rem;
  --step-line-x: calc(var(--step-marker-col) / 2);
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  position: relative;
}

.flow-step:not(:first-child)::before,
.flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: var(--step-line-x);
  transform: translateX(-50%);
  width: 2px;
  background: var(--color-border-strong);
  z-index: 0;
}

/* Split connector: each step draws to its own edge so heights can differ. */
.flow-step:not(:first-child)::before {
  top: 0;
  height: calc(50% - var(--step-badge-size) / 2);
}

.flow-step:not(:last-child)::after {
  top: calc(50% + var(--step-badge-size) / 2);
  bottom: 0;
}

.flow-step {
  display: grid;
  grid-template-columns: var(--step-marker-col) 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1.125rem 0;
  position: relative;
}

.flow-step__number {
  width: var(--step-badge-size);
  height: var(--step-badge-size);
  border-radius: 50%;
  background: var(--color-eu-blue);
  color: white;
  font-size: 0.875rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  justify-self: center;
}

.flow-step__title {
  display: block;
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.flow-step__text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ── Cards ───────────────────────────────────────────────────── */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.375rem 1.5rem;
  margin: 1.5rem 0;
}

.card--accent {
  border-color: var(--color-border);
  background: var(--color-surface);
}

.card > h3 {
  margin-bottom: 0.75rem;
}

.card--widget {
  padding: 1.5rem;
  background: var(--color-background);
  border: 1px solid rgba(0, 51, 153, 0.12);
  box-shadow: var(--shadow-sm);
}

/* ── Buttons ─────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  background: var(--color-eu-blue);
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn:hover {
  background: var(--color-eu-blue-dark);
}

.btn:focus-visible,
.btn-demo-wallet:focus-visible,
.link-card:focus-visible,
.back-link:focus-visible,
.site-footer a:focus-visible,
.skip-link:focus-visible {
  outline: 2px solid var(--color-eu-blue);
  outline-offset: 2px;
}

.site-header__brand:focus-visible {
  outline: 2px solid var(--color-eu-yellow);
  outline-offset: 2px;
}

.btn--lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

.btn-outline {
  background: transparent;
  color: var(--color-eu-blue);
  border: 1px solid var(--color-eu-blue);
}

.btn-outline:hover {
  background: rgba(0, 51, 153, 0.06);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.btn-demo-wallet {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--color-background);
  color: var(--color-eu-blue);
  border: 1px solid var(--color-eu-blue);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}

.btn-demo-wallet:hover {
  background: var(--color-eu-blue);
  color: white;
  transform: none;
}

/* ── Alerts ──────────────────────────────────────────────────── */

.alert {
  padding: 1rem 1.125rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.alert-error {
  background: var(--color-error-bg);
  border: 1px solid #fecaca;
  color: var(--color-error);
}

.alert-success {
  background: var(--color-success-bg);
  border: 1px solid #bbf7d0;
  color: var(--color-success);
  text-align: left;
}

.alert-success strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* ── Widget ──────────────────────────────────────────────────── */

eudi-verify {
  --eudi-primary: var(--color-eu-blue);
  --eudi-text: var(--color-text);
  --eudi-background: var(--color-background);
  --eudi-border-radius: var(--radius);
  --eudi-font-family: var(--font-sans);
  --eudi-error: var(--color-error);
  display: block;
}

.widget-section {
  margin: 1.75rem 0;
}

/* ── Link grid ───────────────────────────────────────────────── */

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.875rem;
  margin-top: 0.5rem;
}

.link-card {
  display: block;
  padding: 1.125rem 1.25rem;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.15s ease;
}

.link-card:hover {
  border-color: var(--color-border-strong);
}

.link-card strong {
  display: block;
  color: var(--color-eu-blue);
  font-size: 0.9375rem;
  margin-bottom: 0.3rem;
}

.link-card span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* ── Verification log ────────────────────────────────────────── */

.verification-log {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.55;
  max-height: 220px;
  overflow-y: auto;
  margin: 0;
  padding: 0.75rem 0.75rem 0.75rem 2rem;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.verification-log li {
  margin-bottom: 0.4rem;
  word-break: break-all;
}

.verification-log a {
  color: var(--color-eu-blue);
  font-weight: 500;
}

.log-card > h3 {
  margin-bottom: 0.75rem;
}

/* ── Demo wallet panel ───────────────────────────────────────── */

.demo-wallet-panel {
  margin-top: 0;
  border-style: dashed;
  border-color: rgba(0, 51, 153, 0.25);
  background: var(--color-eu-yellow-soft);
}

.demo-wallet-hint {
  margin-bottom: 0.875rem;
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* ── Curl hint ───────────────────────────────────────────────── */

.curl-hint {
  margin: 1rem 0 1.5rem;
  padding: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.curl-hint summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-eu-blue);
  padding: 0.875rem 1rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  user-select: none;
}

.curl-hint summary::-webkit-details-marker {
  display: none;
}

.curl-hint summary::before {
  content: "▸";
  font-size: 0.75rem;
  transition: transform 0.15s ease;
}

.curl-hint[open] summary::before {
  transform: rotate(90deg);
}

.curl-hint summary:hover {
  background: rgba(0, 51, 153, 0.04);
}

.curl-hint__body {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--color-border);
}

.curl-hint-note {
  margin: 0.875rem 0 0.625rem;
  font-size: 0.875rem;
}

/* ── Demo wallet page ────────────────────────────────────────── */

.phone-stage {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0 1.5rem;
}

.phone-frame {
  width: 100%;
  max-width: 380px;
  background: #1e293b;
  border-radius: var(--radius-lg);
  padding: 0.75rem;
  box-shadow: var(--shadow-md);
}

.phone-frame__notch {
  width: 5rem;
  height: 0.375rem;
  background: #334155;
  border-radius: var(--radius-sm);
  margin: 0.25rem auto 0.75rem;
}

.demo-wallet-card {
  background: var(--color-background);
  border-radius: var(--radius);
  padding: 1.375rem 1.25rem 1.5rem;
  min-height: 280px;
}

.demo-wallet-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.demo-wallet-header h1 {
  font-size: 1.0625rem;
  margin: 0;
  color: var(--color-text);
}

.demo-wallet-icon {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: var(--color-eu-blue);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.demo-wallet-loading {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2rem 0;
}

.demo-wallet-loading p {
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

.demo-wallet-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.demo-wallet-actions .btn {
  flex: 1;
}

/* ── Receipt & replay ────────────────────────────────────────── */

.receipt-table {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1.25rem;
  font-size: 0.9375rem;
}

.receipt-table dt {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
}

.receipt-table dd {
  margin: 0;
  word-break: break-all;
}

.receipt-note {
  font-size: 0.875rem;
  margin-bottom: 1.125rem;
  color: var(--color-text-muted);
}

.replay-result {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: #0f172a;
  color: #e2e8f0;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 0.75rem;
  line-height: 1.55;
}

#replay-result {
  margin-top: 1rem;
}

.receipt-table .replay-result {
  margin-top: 0;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

/* ── Success page ────────────────────────────────────────────── */

.success-hero {
  padding: 1rem 0 0.5rem;
}

.success-badge {
  width: 2.5rem;
  height: 2.5rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--color-success);
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline {
  --timeline-dot-size: 0.625rem;
  --timeline-marker-col: 1.75rem;
  --timeline-line-x: calc(var(--timeline-marker-col) / 2);
  text-align: left;
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
}

.timeline::before {
  display: none;
}

.timeline li {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 1.625rem;
  padding: 0.3rem 0 0.3rem var(--timeline-marker-col);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.timeline li:not(:last-child)::before {
  content: "";
  position: absolute;
  left: var(--timeline-line-x);
  transform: translateX(-50%);
  top: calc(50% + var(--timeline-dot-size) / 2);
  bottom: calc(-50% + var(--timeline-dot-size) / 2);
  width: 2px;
  background: var(--color-border-strong);
  z-index: 0;
}

.timeline li::after {
  content: "";
  position: absolute;
  left: calc(var(--timeline-line-x) - var(--timeline-dot-size) / 2);
  top: 50%;
  transform: translateY(-50%);
  width: var(--timeline-dot-size);
  height: var(--timeline-dot-size);
  border-radius: 50%;
  background: var(--color-eu-blue);
  z-index: 1;
}

/* ── Footer ──────────────────────────────────────────────────── */

.site-footer {
  text-align: center;
  padding: 2rem 1.25rem 2.5rem;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.5);
  margin-top: auto;
}

.site-footer p + p {
  margin-top: 0.5rem;
}

.site-footer a {
  color: var(--color-eu-blue);
  text-decoration: none;
  font-weight: 500;
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 0.75rem;
}

/* ── Responsive ──────────────────────────────────────────────── */

@media (max-width: 520px) {
  .page-main {
    padding: 1.25rem 1rem 2rem;
  }

  .page-panel {
    padding: 1.375rem 1.125rem;
    border-radius: var(--radius);
  }

  .site-header {
    padding: 0 1rem;
  }

  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-group .btn {
    width: 100%;
  }

  .phone-frame {
    border-radius: 1.5rem;
  }
}