/* ─── AJL Nutrición · Páginas de checkout ─────────────────────────────────── */

:root {
  --bg: #F5F5F7;
  --card: #FFFFFF;
  --ink: #1D1D1F;
  --ink-soft: #6E6E73;
  --line: rgba(0,0,0,0.08);
  --gold: #C8973A;
  --gold-soft: #FDF4E3;
  --gold-dark: #9A6020;
  --green: #2C8C3B;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Nav ──────────────────────────────────────────────────────────────────── */
.checkout-nav {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.checkout-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-family: 'Plus Jakarta Sans';
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.back-link {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 0.2s;
}

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

/* ─── Header / plan card ──────────────────────────────────────────────────── */
main { padding: 32px 0 64px; }

.plan-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 32px;
  margin-bottom: 20px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

.plan-name {
  font-size: clamp(28px, 5vw, 38px);
  margin-bottom: 4px;
}

.plan-tagline {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.price-base {
  font-family: 'Plus Jakarta Sans';
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}

.price-per {
  font-size: 14px;
  color: var(--ink-soft);
  font-weight: 500;
}

.price-card {
  font-size: 13px;
  color: var(--ink-soft);
}

.price-card strong { color: var(--gold); font-weight: 700; }

.plan-includes-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.plan-includes {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-includes li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.55;
}

.plan-includes svg { flex-shrink: 0; margin-top: 3px; }

/* ─── Steps ──────────────────────────────────────────────────────────────── */
.steps-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 32px;
}

.steps-title {
  font-size: 22px;
  margin-bottom: 24px;
}

.step {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.step:first-of-type { border-top: none; padding-top: 8px; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-family: 'Plus Jakarta Sans';
  font-weight: 800;
  font-size: 14px;
}

.step-body h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.step-body > p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

/* Métodos de pago */
.pay-methods {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.pay-methods li {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
}

.pay-methods strong {
  font-weight: 700;
  color: var(--ink);
}

.pay-value {
  font-family: 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: rgba(0,0,0,0.04);
  padding: 3px 8px;
  border-radius: 6px;
  -webkit-user-select: all;
  user-select: all;
}

.pay-methods li.pay-card {
  background: var(--ink);
  border-color: var(--ink);
}

.pay-card strong { color: #fff; }

.pay-card small {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

.culqi-btn {
  margin-left: auto;
  background: var(--gold);
  color: var(--ink);
  padding: 9px 16px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  transition: all 0.2s;
}

.culqi-btn:hover {
  background: var(--gold-dark);
  color: #fff;
  transform: translateY(-1px);
}

/* WhatsApp CTA */
.wa-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.2s;
  margin-top: 4px;
}

.wa-cta:hover {
  background: #1f6b2a;
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(44,140,59,0.25);
}

.wa-cta svg { width: 18px; height: 18px; }

/* Hint */
.step-hint {
  background: var(--gold-soft);
  border-left: 3px solid var(--gold);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--ink);
  margin-top: 8px;
}

/* Modalidades */
.modalities {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
}

.modalities li {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.5;
}

.modalities li strong { font-weight: 700; }

/* Footer */
.checkout-footer {
  text-align: center;
  margin-top: 32px;
  padding: 24px 16px;
  color: var(--ink-soft);
  font-size: 14px;
}

.checkout-footer a {
  color: var(--gold);
  font-weight: 700;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.checkout-footer a:hover { border-color: var(--gold); }

.libro-row {
  display: flex; justify-content: center; gap: 16px; flex-wrap: wrap;
  margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line);
  font-size: 12px; color: var(--ink-soft);
}
.libro-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border: 1.5px solid var(--ink); border-radius: 6px;
  font-weight: 700; font-size: 12px; color: var(--ink) !important;
  transition: all 0.2s; border-bottom: 1.5px solid var(--ink) !important;
}
.libro-link:hover { background: var(--ink); color: #fff !important; }

/* Responsive */
@media (max-width: 560px) {
  .plan-card, .steps-wrap { padding: 24px 20px; }
  .price-base { font-size: 36px; }
  .step { grid-template-columns: 28px 1fr; gap: 12px; }
  .step-num { width: 26px; height: 26px; font-size: 12px; }
  .pay-methods li { flex-direction: column; align-items: flex-start; }
  .culqi-btn { margin-left: 0; width: 100%; text-align: center; }
}