:root {
  --navy: #002F6C;
  --red: #FF0000;
  --white: #FFFFFF;
  --muted: #5A6570;
  --border: #E1E5EA;
  --surface: #F5F7F9;
  --bg: #FFFFFF;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 47, 108, 0.08), 0 4px 12px rgba(0, 47, 108, 0.05);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--navy);
  font-family: system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--navy); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--red); }

img, svg { max-width: 100%; display: block; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Brand stripe (top + bottom) — tri vertikalne trake navy/white/red */
.brand-stripe {
  display: flex;
  height: 6px;
  width: 100%;
}
.brand-stripe span { flex: 1; }
.brand-stripe span:nth-child(1) { background: var(--red); }
.brand-stripe span:nth-child(2) { background: var(--white); }
.brand-stripe span:nth-child(3) { background: var(--navy); }

/* Header */
header.site {
  padding: 32px 0 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.brand-mark {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 2px;
  text-decoration: none;
}
.brand-mark .ai { color: var(--red); }
.lang-switch {
  font-size: 14px;
  color: var(--muted);
}
.lang-switch a {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.lang-switch a.active,
.lang-switch a:hover {
  color: var(--navy);
  border-color: var(--navy);
}

/* Hero */
.hero {
  padding: 48px 0 32px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(28px, 4.5vw, 44px);
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.hero p.lead {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto;
}

/* Section */
section {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
section h2 {
  font-size: 24px;
  margin: 0 0 20px;
  font-weight: 700;
}
section p { color: var(--muted); }
section p.intro { margin-top: -8px; margin-bottom: 24px; }

/* Cards */
.cards {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--navy);
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.card a.more {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
}

/* Donate cards (primary CTA pattern) */
.donate-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.donate-card.featured {
  border-color: var(--navy);
  border-width: 2px;
}
.donate-card h3 {
  margin: 0 0 4px;
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.donate-card .badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--red);
  color: var(--white);
  padding: 3px 8px;
  border-radius: 4px;
}
.donate-card .desc {
  color: var(--muted);
  margin: 8px 0 16px;
}
.donate-card .detail {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 14px;
  word-break: break-all;
  color: var(--navy);
}
.donate-card .row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
}
.btn:hover { background: #00224d; color: var(--white); }
.btn.secondary {
  background: var(--white);
  color: var(--navy);
  border: 1px solid var(--border);
}
.btn.secondary:hover { border-color: var(--navy); color: var(--navy); background: var(--surface); }

.tbd {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  background: var(--surface);
  border: 1px dashed var(--muted);
  color: var(--muted);
  border-radius: 4px;
  text-transform: uppercase;
}

/* Footer */
footer.site {
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}
footer.site .links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
footer.site .links a { color: var(--muted); }

/* Utility */
.muted { color: var(--muted); }
.center { text-align: center; }
.hidden { display: none !important; }

/* Quick-donate widget */
.amount-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.amount-row label {
  font-weight: 600;
  color: var(--navy);
}
.amount-row input[type="number"] {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 18px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 140px;
  color: var(--navy);
  background: var(--white);
}
.amount-row input[type="number"]:focus {
  outline: none;
  border-color: var(--navy);
}
.amount-row .currency {
  font-weight: 600;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.tab {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-radius: 8px 8px 0 0;
  margin-bottom: -1px;
}
.tab:hover { color: var(--navy); }
.tab.active {
  color: var(--navy);
  background: var(--white);
  border-color: var(--border);
}

.tab-panel {
  padding: 20px 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 600px) {
  .tab-panel { grid-template-columns: 1fr; }
}

.qr-container {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 260px;
  min-height: 260px;
}
.qr-container canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.payload-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.payload {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--navy);
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
  max-height: 220px;
  overflow: auto;
}
.btn-copy {
  align-self: flex-start;
  background: var(--white);
  border: 1px solid var(--border);
  color: var(--navy);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}
.btn-copy:hover { border-color: var(--navy); background: var(--surface); }

.hint {
  font-size: 13px;
  color: var(--muted);
  margin: 16px 0 0;
  grid-column: 1 / -1;
}
.hint code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  background: var(--surface);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}

/* On-chain tx list */
.tx-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.tx-row {
  background: var(--white);
  padding: 14px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: center;
}
.tx-row:hover { background: var(--surface); }
.tx-amount {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 700;
  font-size: 16px;
  color: var(--navy);
}
.tx-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
  align-items: center;
}
.tx-mint-badge {
  background: var(--navy);
  color: var(--white);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.tx-link {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--muted);
}
.tx-link:hover { color: var(--navy); }
.tx-list > p.muted { padding: 16px; background: var(--white); margin: 0; }