/* ===== Variables ===== */
:root {
  --bg-dark: #0D0D0D;
  --bg-card: #1A1A1A;
  --bg-card-hover: #222222;
  --gold: #C9A84C;
  --gold-light: #E8C547;
  --gold-dark: #A8873A;
  --white: #FFFFFF;
  --gray-100: #F5F5F5;
  --gray-300: #CCCCCC;
  --gray-500: #888888;
  --whatsapp: #25D366;
  --whatsapp-dark: #1DA851;
  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-gold: 0 4px 24px rgba(201, 168, 76, 0.25);
  --header-height: 64px;
  --top-bar-height: 36px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--top-bar-height) + 16px);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-100);
  background: var(--bg-dark);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

em {
  font-style: normal;
  color: var(--gold-light);
}

/* ===== Utilities ===== */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

.container--narrow {
  max-width: 760px;
}

.text-gold {
  color: var(--gold-light);
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Top bar ===== */
.top-bar {
  background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-dark));
  text-align: center;
  padding: 8px 16px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--bg-dark);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--white);
}

.logo span {
  color: var(--gold);
}

.nav {
  display: none;
  gap: 28px;
}

.nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-300);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--gold-light);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav--open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-card);
  padding: 24px;
  gap: 16px;
  border-bottom: 1px solid rgba(201, 168, 76, 0.2);
  box-shadow: var(--shadow);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 0.9375rem;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--bg-dark);
  box-shadow: var(--shadow-gold);
}

.btn--primary:hover {
  box-shadow: 0 6px 28px rgba(201, 168, 76, 0.4);
}

.btn--outline {
  border: 2px solid var(--gold);
  color: var(--gold-light);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(201, 168, 76, 0.1);
}

.btn--whatsapp {
  background: linear-gradient(135deg, var(--whatsapp), #2EE876);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
}

.btn--whatsapp:hover {
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.5);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height) - var(--top-bar-height));
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13, 13, 13, 0.4) 0%,
    rgba(13, 13, 13, 0.85) 60%,
    var(--bg-dark) 100%
  );
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  padding: 48px 20px 64px;
  align-items: center;
}

.hero__content h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 16px;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--gray-300);
  margin-bottom: 24px;
}

.hero__bullets {
  display: grid;
  gap: 10px;
  margin-bottom: 32px;
}

.hero__bullets li {
  padding-left: 24px;
  position: relative;
  color: var(--gray-100);
  font-size: 0.9375rem;
}

.hero__bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero__badges span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 50px;
  background: rgba(201, 168, 76, 0.12);
  border: 1px solid rgba(201, 168, 76, 0.3);
  color: var(--gold-light);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.hero__product {
  display: flex;
  justify-content: center;
}

.hero__product img {
  max-height: clamp(420px, 52vh, 580px);
  width: auto;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.55));
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.badge--new {
  background: var(--gold);
  color: var(--bg-dark);
}

/* ===== Sections ===== */
.section {
  padding: 72px 0;
}

.section--dark {
  background: var(--bg-card);
}

.section--gold {
  background: linear-gradient(180deg, #1A1608 0%, var(--bg-dark) 100%);
}

.section--legal {
  background: #111111;
  padding-bottom: 48px;
}

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--white);
  margin-bottom: 12px;
}

.section__header p {
  color: var(--gray-500);
  font-size: 1.0625rem;
  max-width: 560px;
  margin: 0 auto;
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 12px;
}

/* ===== Split layout ===== */
.split {
  display: grid;
  gap: 40px;
  align-items: center;
}

.split__image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  width: 100%;
}

.split__image--small img {
  max-width: 280px;
  margin: 0 auto;
}

.split__content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.2;
}

.split__content p {
  color: var(--gray-300);
  margin-bottom: 16px;
}

.split__content .btn {
  margin-top: 8px;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 20px 0;
}

.check-list li {
  padding-left: 28px;
  position: relative;
  color: var(--gray-100);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
  font-size: 1.1rem;
}

.highlight-text {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gold-light) !important;
  font-style: italic;
}

/* ===== Benefits ===== */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.benefit-card {
  background: var(--bg-dark);
  border: 1px solid rgba(201, 168, 76, 0.15);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.benefit-card:hover {
  border-color: rgba(201, 168, 76, 0.4);
  transform: translateY(-2px);
}

.benefit-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--gold-light);
  margin-bottom: 6px;
}

.benefit-card p {
  color: var(--gray-500);
  font-size: 0.9375rem;
}

.benefits-banner img {
  border-radius: var(--radius-lg);
  margin: 0 auto;
  box-shadow: var(--shadow);
}

.disclaimer-inline {
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--gray-500);
  letter-spacing: 0.02em;
}

/* ===== Testimonial ===== */
.testimonial {
  display: grid;
  gap: 32px;
  align-items: center;
}

.testimonial img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.testimonial__quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.625rem);
  line-height: 1.5;
  color: var(--white);
  font-style: italic;
  margin-bottom: 16px;
  border-left: 3px solid var(--gold);
  padding-left: 20px;
}

.testimonial__tagline {
  font-weight: 600;
  color: var(--gold-light);
  font-size: 1rem;
}

/* ===== Kits ===== */
.kits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}

.kit-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.kit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.kit-card--featured {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(201, 168, 76, 0.08) 0%, var(--bg-card) 40%);
  box-shadow: var(--shadow-gold);
}

.kit-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: var(--bg-dark);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 16px;
  border-radius: 50px;
  white-space: nowrap;
}

.kit-card__image {
  margin-bottom: 16px;
}

.kit-card__image img {
  max-height: 140px;
  margin: 0 auto;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.3));
}

.kit-card__label {
  font-size: 0.8125rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.kit-card__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: 8px;
}

.kit-card__price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 20px;
}

.kit-card__features {
  flex: 1;
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
  text-align: left;
}

.kit-card__features li {
  font-size: 0.875rem;
  color: var(--gray-300);
  padding-left: 20px;
  position: relative;
}

.kit-card__features li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--gold);
}

.kit-card__btn {
  width: 100%;
}

/* ===== Steps ===== */
.steps {
  display: grid;
  gap: 24px;
}

.step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step__number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--bg-dark);
  font-weight: 700;
  border-radius: 50%;
  font-size: 1.125rem;
}

.step h3 {
  font-size: 1.0625rem;
  color: var(--white);
  margin-bottom: 4px;
}

.step p {
  color: var(--gray-500);
  font-size: 0.9375rem;
}

/* ===== FAQ ===== */
.faq {
  display: grid;
  gap: 12px;
}

.faq__item {
  background: var(--bg-dark);
  border: 1px solid rgba(201, 168, 76, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq__item summary {
  padding: 18px 20px;
  font-weight: 600;
  color: var(--white);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}

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

.faq__item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--gold);
  transition: transform 0.2s;
}

.faq__item[open] summary::after {
  transform: rotate(45deg);
}

.faq__item summary:hover {
  color: var(--gold-light);
}

.faq__item p {
  padding: 0 20px 18px;
  color: var(--gray-500);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ===== Legal ===== */
.section--legal h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: 24px;
}

.legal-content {
  display: grid;
  gap: 24px;
}

.legal-block h3 {
  font-size: 0.9375rem;
  color: var(--gold);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.legal-block p {
  font-size: 0.8125rem;
  color: var(--gray-500);
  line-height: 1.7;
}

.legal-list {
  display: grid;
  gap: 6px;
}

.legal-list li {
  font-size: 0.8125rem;
  color: var(--gray-500);
  padding-left: 16px;
  position: relative;
}

.legal-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gray-500);
}

.legal-list--warnings li {
  color: var(--gray-300);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(201, 168, 76, 0.15);
  padding: 48px 0 32px;
}

.footer__inner {
  text-align: center;
  display: grid;
  gap: 24px;
}

.footer__brand p:last-child {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: 4px;
}

.footer__cta {
  margin: 0 auto;
}

.footer__disclaimer {
  font-size: 0.75rem;
  color: var(--gray-500);
  line-height: 1.6;
  max-width: 640px;
  margin: 0 auto;
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* ===== WhatsApp float ===== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  transition: transform 0.2s, box-shadow 0.2s;
  animation: pulse-wa 2.5s ease-in-out infinite;
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.6);
}

@keyframes pulse-wa {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5); }
  50% { box-shadow: 0 4px 32px rgba(37, 211, 102, 0.75); }
}

/* ===== Responsive ===== */
@media (min-width: 640px) {
  .hero__cta {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .nav--open {
    position: static;
    flex-direction: row;
    background: none;
    padding: 0;
    border: none;
    box-shadow: none;
  }

  .hero__grid {
    grid-template-columns: 1fr 1fr;
    padding: 64px 20px 80px;
  }

  .hero__product img {
    max-height: clamp(550px, 72vh, 800px);
  }

  .split {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .split--reverse .split__image {
    order: 2;
  }

  .split--reverse .split__content {
    order: 1;
  }

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

  .testimonial {
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 96px 0;
  }
}

@media (max-width: 767px) {
  .kits-grid {
    max-width: 400px;
    margin: 0 auto;
  }

  .kit-card--featured {
    order: -1;
  }
}