:root {
  --bg: #0b0b0d;
  --bg-alt: #131316;
  --card: #18181c;
  --border: #2a2a2f;
  --text: #f2f1ec;
  --text-dim: #a8a7a1;
  --gold: #d4af37;
  --gold-soft: #e8c766;
  --radius: 14px;
  --max-width: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 { font-weight: 800; letter-spacing: -0.02em; }

.accent { color: var(--gold); }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 12px;
}
.eyebrow.center { text-align: center; }
.center { text-align: center; }

.section-sub {
  max-width: 620px;
  margin: 12px auto 0;
  color: var(--text-dim);
  font-size: 1.05rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  color: #1a1400;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(212, 175, 55, 0.35);
}
.btn-lg { padding: 18px 38px; font-size: 1.05rem; }
.btn-nav { padding: 10px 20px; font-size: 0.92rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 13, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.logo {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.logo span { color: var(--gold); }

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--text); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 18px;
  padding: 20px 24px 28px;
  border-top: 1px solid var(--border);
}
.mobile-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 600;
}
.mobile-nav.open { display: flex; }

/* Hero */
.hero {
  padding: 100px 0 80px;
  background:
    radial-gradient(circle at 20% 0%, rgba(212,175,55,0.10), transparent 45%),
    radial-gradient(circle at 90% 30%, rgba(212,175,55,0.06), transparent 40%);
}
.hero-inner { max-width: 780px; }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 14px 0 22px;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 620px;
  margin-bottom: 34px;
}
.hero-note {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.scarcity-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid rgba(212, 175, 55, 0.4);
  color: var(--gold);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 8px 18px;
  border-radius: 999px;
  margin-bottom: 20px;
}

/* Problem */
.problem { padding: 70px 0; background: var(--bg-alt); }
.problem h2 { font-size: 1.8rem; margin-bottom: 30px; }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.problem-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-dim);
}
.problem-close {
  margin-top: 30px;
  font-size: 1.15rem;
  font-weight: 700;
  max-width: 640px;
}

/* Programa / feature grid */
.programa { padding: 90px 0; }
.programa h2 { font-size: 2rem; margin-top: 4px; }
.feature-grid {
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.feature-icon { font-size: 1.8rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-dim); font-size: 0.95rem; }

/* Proceso */
.proceso { padding: 90px 0; background: var(--bg-alt); }
.proceso h2 { font-size: 2rem; margin-top: 4px; }
.steps {
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.step-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--gold);
  opacity: 0.5;
  margin-bottom: 10px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { color: var(--text-dim); font-size: 0.92rem; }

/* Resultados */
.resultados { padding: 90px 0; }
.resultados h2 { font-size: 2rem; margin-top: 4px; }

.results-carousel-wrap {
  margin-top: 50px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.results-carousel {
  flex: 1;
  display: flex;
  gap: 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 4px 2px;
}
.results-carousel::-webkit-scrollbar { display: none; }

.carousel-slide {
  flex: 0 0 auto;
  width: min(560px, 82vw);
  scroll-snap-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.carousel-slide img {
  display: block;
  width: 100%;
  height: 420px;
  object-fit: contain;
  background: var(--bg);
}
.results-photo-caption {
  padding: 14px 18px;
  font-size: 0.9rem;
  color: var(--text-dim);
}
.results-photo-caption strong { color: var(--text); }

.carousel-btn {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--gold);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.carousel-btn:hover {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.1);
}

.testimonial-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.testimonial-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.quote { font-size: 1rem; margin-bottom: 16px; }
.author { color: var(--gold); font-size: 0.88rem; font-weight: 600; }

/* FAQ */
.faq { padding: 90px 0; background: var(--bg-alt); }
.faq h2 { font-size: 2rem; margin-top: 4px; }
.faq-list {
  margin-top: 40px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--gold);
  font-size: 1.2rem;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin-top: 12px; color: var(--text-dim); }

/* Final CTA */
.cta-final {
  padding: 100px 0;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(212,175,55,0.14), transparent 55%);
}
.cta-final-inner { max-width: 620px; margin: 0 auto; }
.cta-final h2 { font-size: 2.1rem; margin-bottom: 16px; }
.cta-final p { color: var(--text-dim); margin-bottom: 32px; font-size: 1.05rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 34px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.footer-links a { color: var(--text-dim); text-decoration: none; }
.footer-links a:hover { color: var(--gold); }

/* Who it's for */
.fit-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.fit-col {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.fit-yes { color: var(--gold); margin-bottom: 14px; font-size: 1.05rem; }
.fit-no { color: var(--text-dim); margin-bottom: 14px; font-size: 1.05rem; }
.fit-col ul { padding-left: 20px; color: var(--text-dim); }
.fit-col li { margin-bottom: 10px; }

/* Calendar CTA */
.reservar { padding: 90px 0 100px; }
.calendar-cta {
  margin-top: 40px;
  text-align: center;
}
.calendar-fallback {
  margin-top: 16px;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.three-steps { grid-template-columns: repeat(3, 1fr); }

/* Macro calculator */
.calculadora { padding: 20px 0 100px; }
.calc-form {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.calc-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.calc-field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.calc-field input,
.calc-field select,
.calc-field textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
}
.calc-field input:focus,
.calc-field select:focus,
.calc-field textarea:focus {
  outline: none;
  border-color: var(--gold);
}

.calc-slider-value {
  background: var(--gold);
  color: #1a1400;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.calc-field input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  border: none;
  padding: 10px 0;
  cursor: pointer;
}
.calc-field input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
}
.calc-field input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
}
.calc-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--gold);
  margin-top: -7px;
  cursor: pointer;
}
.calc-field input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--gold);
  cursor: pointer;
}
.calc-field input[type="range"]:focus {
  outline: none;
}
.calc-field input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.4);
}

.apply-form { max-width: 760px; }
.apply-field-full { grid-column: 1 / -1; }
.calc-submit {
  grid-column: 1 / -1;
  margin-top: 10px;
  width: 100%;
}

.calc-results {
  max-width: 900px;
  margin: 70px auto 0;
}
.calc-results h2 { font-size: 1.7rem; }
.calc-goal-detected {
  margin-top: 10px;
  color: var(--gold);
  font-weight: 600;
  font-size: 0.95rem;
}
.calc-results-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.calc-result-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 18px;
  text-align: center;
}
.calc-result-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.calc-result-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gold);
}
.calc-result-unit {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4px;
}
.calc-cta {
  margin-top: 40px;
  text-align: center;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.calc-cta p {
  color: var(--text-dim);
  margin-bottom: 24px;
}

/* Responsive */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .btn-nav { display: none; }
  .menu-toggle { display: block; }
  .problem-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .fit-grid { grid-template-columns: 1fr; }
  .calc-results-grid { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 520px) {
  .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .carousel-btn { width: 34px; height: 34px; font-size: 1.3rem; }
  .carousel-slide img { height: 300px; }
  .hero { padding: 70px 0 60px; }
  .calc-form { grid-template-columns: 1fr; padding: 26px; }
  .calc-results-grid { grid-template-columns: 1fr; }
}