:root {
  --saffron: #E8A800;
  --saffron-ink: #5C4500;
  /* Adire Atelier primary — used for the referral CTA (saffron is a heritage
     accent only, never a primary button; see CLAUDE.md). */
  --indigo: #2C3E7C;
  --indigo-hover: #22305F;
  --ink: #0F172A;
  --muted: #475569;
  --bg: #FFFFFF;
  --rule: #E2E8F0;
  --link: #C48F00;
  --link-hover: #8A6300;
  --max-width: 700px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header {
  background: var(--saffron);
  padding: 16px 24px;
}

header .logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--saffron-ink);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

header .logo-link img {
  width: 28px;
  height: 28px;
  margin-right: 10px;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 96px;
}

main h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

main h2 {
  font-size: 22px;
  line-height: 1.3;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
}

main h3 {
  font-size: 18px;
  line-height: 1.4;
  margin: 28px 0 8px;
}

main p {
  margin: 0 0 16px;
}

main ul, main ol {
  padding-left: 24px;
  margin: 0 0 16px;
}

main li {
  margin-bottom: 8px;
}

main a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

main .effective-date {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 32px;
}

main hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 32px 0;
}

footer {
  border-top: 1px solid var(--rule);
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

footer a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  margin: 0 8px;
}

footer a:hover {
  color: var(--ink);
}

/* Landing-page styles (index.html) */
.landing {
  max-width: 600px;
  margin: 0 auto;
  padding: 120px 24px;
  text-align: center;
}

.landing h1 {
  font-size: 40px;
  line-height: 1.1;
  margin: 24px 0 12px;
  letter-spacing: -0.02em;
}

.landing p {
  font-size: 18px;
  color: var(--muted);
}

.landing .brand-mark {
  width: 72px;
  height: 72px;
  margin: 0 auto;
}

/* Referral landing (r.html) */
.referral {
  max-width: 480px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  text-align: center;
}

.referral .brand-mark {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
}

.referral h1 {
  font-size: 28px;
  line-height: 1.2;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.referral .subtitle {
  font-size: 17px;
  color: var(--muted);
  margin: 0 0 32px;
}

.referral .code-card {
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 20px;
  margin: 0 0 28px;
  background: #FFFDF7;
}

.referral .code-label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 6px;
}

.referral .code-value {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.referral .cta {
  display: inline-block;
  width: 100%;
  max-width: 320px;
  padding: 15px 24px;
  border-radius: 12px;
  background: var(--indigo);
  color: #FFFFFF;
  font-size: 17px;
  font-weight: 700;
  text-decoration: none;
  border: 0;
  cursor: pointer;
}

.referral .cta:hover {
  background: var(--indigo-hover);
  color: #FFFFFF;
}

.referral .cta.secondary {
  background: transparent;
  color: var(--link);
  border: 1px solid var(--rule);
  margin-top: 12px;
}

.referral .cta.secondary:hover {
  background: #FFFDF7;
  color: var(--link-hover);
}

.referral .hint {
  font-size: 14px;
  color: var(--muted);
  margin: 24px 0 0;
}

.referral .copied {
  font-size: 14px;
  color: var(--saffron-ink);
  margin: 12px 0 0;
  min-height: 20px;
}

/* Referral admin dashboard (admin.html) */
.admin {
  max-width: 1040px;
}

.admin-note {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 20px;
}

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 320px;
}

.admin-form input {
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  font: inherit;
}

.admin-error {
  color: var(--sienna, #B85A30);
  font-size: 14px;
  margin: 16px 0 0;
  min-height: 20px;
}

.admin-loading {
  color: var(--muted);
  font-size: 15px;
}

.admin-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.admin-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.admin-bar .cta {
  width: auto;
  padding: 10px 16px;
  font-size: 14px;
  margin: 0;
}

.admin-totals {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin: 24px 0;
}

.admin-card {
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 14px 16px;
  background: #FFFDF7;
}

.admin-card-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 6px;
}

.admin-card-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.admin-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: 12px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table th,
.admin-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}

.admin-table th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: #FBFBF8;
}

.admin-table tr:last-child td {
  border-bottom: 0;
}

.admin-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.admin-table .muted {
  color: var(--muted);
  font-size: 13px;
}

.admin-table code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
}

.admin-table .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.admin-table .badge.ok { background: #E6F4EA; color: #1E7A3D; }
.admin-table .badge.off { background: #F1E6E0; color: #8A4A2A; }

.admin-table .mark-paid {
  padding: 6px 12px;
  border: 1px solid var(--indigo);
  border-radius: 8px;
  background: var(--indigo);
  color: #FFFFFF;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.admin-table .mark-paid:hover { background: var(--indigo-hover); }
.admin-table .mark-paid:disabled { opacity: 0.6; cursor: default; }

@media (max-width: 640px) {
  main {
    padding: 32px 20px 64px;
  }
  main h1 {
    font-size: 26px;
  }
  main h2 {
    font-size: 19px;
  }
  .landing {
    padding: 80px 20px;
  }
  .landing h1 {
    font-size: 32px;
  }
}