/* ============================================================
   VARIABLES & RESET
   ============================================================ */
:root {
  --color-primary: #C8A4A4;
  --color-secondary: #E8D5D5;
  --color-accent: #8B5E5E;
  --color-accent-hover: #7a5252;
  --color-text: #2C2C2C;
  --color-text-light: #666666;
  --color-bg: #FDFAF9;
  --color-bg-section: #F5EDED;
  --color-white: #FFFFFF;

  --font-heading: 'Playfair Display', serif;
  --font-body: 'Lato', sans-serif;

  --max-width: 1100px;
  --section-padding: 80px 24px;
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
}

.section-alt {
  background: var(--color-bg-section);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  text-align: center;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-text-light);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-cta {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  padding: 16px 36px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.btn-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-cta:active {
  transform: translateY(0);
}

.btn-cta-large {
  font-size: 1.15rem;
  padding: 20px 48px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: var(--color-bg);
  padding: 80px 24px;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  text-align: center;
}

.hero-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 8vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: 20px;
}

.hero-title em {
  color: var(--color-accent);
  font-style: italic;
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.hero-urgency {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 14px;
}

/* Book cover */
.book-cover-wrapper {
  position: relative;
  width: 260px;
  flex-shrink: 0;
}

.book-cover {
  width: 260px;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(139, 94, 94, 0.25), 0 4px 16px rgba(0,0,0,0.1);
}

.book-cover-placeholder {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 260px;
  height: 360px;
  background: var(--color-secondary);
  border-radius: var(--radius);
  border: 2px dashed var(--color-primary);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
  padding: 24px;
}

/* ============================================================
   PARA QUIÉN ES — CARDS
   ============================================================ */
.cards-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  border: 1px solid var(--color-secondary);
}

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--color-accent);
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--color-text);
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================================
   EL PROBLEMA
   ============================================================ */
.problems-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 36px;
}

.problem-item {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  border-left: 4px solid var(--color-primary);
}

.problem-q {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 8px;
}

.problem-a {
  display: block;
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.problems-footer {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 8px;
}

/* ============================================================
   QUÉ VAS A APRENDER
   ============================================================ */
.learn-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.learn-block {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--color-secondary);
  position: relative;
}

.learn-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1;
  margin-bottom: 8px;
}

.learn-block h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.learn-block ul li {
  font-size: 0.95rem;
  color: var(--color-text-light);
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
  line-height: 1.5;
}

.learn-block ul li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1.3;
}

.cta-center {
  text-align: center;
}

.cta-note {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 12px;
}

/* ============================================================
   SOBRE LA AUTORA
   ============================================================ */
.autora-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  text-align: center;
}

.autora-photo {
  flex-shrink: 0;
}

.autora-photo img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 4px solid var(--color-secondary);
  box-shadow: 0 8px 32px rgba(139, 94, 94, 0.15);
}

.photo-placeholder {
  display: none;
  align-items: center;
  justify-content: center;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--color-secondary);
  border: 4px solid var(--color-primary);
}

.autora-bio h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.autora-bio p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  max-width: 580px;
  margin-bottom: 12px;
}

.instagram-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.95rem;
  margin-top: 8px;
  transition: opacity 0.2s;
}

.instagram-link:hover {
  opacity: 0.75;
}

/* ============================================================
   TESTIMONIOS
   ============================================================ */
.testimonios-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.testimonio-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--color-secondary);
}

.testimonio-card.placeholder {
  opacity: 0.5;
}

.testimonio-stars {
  color: var(--color-accent);
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonio-text {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 20px;
}

.testimonio-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonio-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-secondary);
  flex-shrink: 0;
}

.testimonio-author strong {
  display: block;
  font-size: 0.95rem;
  color: var(--color-text);
}

.testimonio-author span {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ============================================================
   CTA FINAL
   ============================================================ */
.cta-final {
  background: var(--color-accent);
  text-align: center;
  padding: 100px 24px;
}

.cta-final-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-final-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  max-width: 580px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.cta-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 24px;
  margin-bottom: 36px;
}

.cta-features span {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.9);
  font-weight: 700;
}

.cta-price-block {
  margin-bottom: 32px;
}

.cta-price-regular {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 4px;
}

.cta-price-regular s {
  text-decoration: line-through;
}

.cta-price-launch {
  font-size: 1.3rem;
  color: var(--color-white);
  font-weight: 400;
}

.cta-price-launch strong {
  font-size: 2rem;
  font-family: var(--font-heading);
  font-weight: 700;
}

.cta-final .btn-cta {
  background: var(--color-white);
  color: var(--color-accent);
}

.cta-final .btn-cta:hover {
  background: var(--color-bg-section);
}

.cta-footer-note {
  margin-top: 20px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-text);
  padding: 40px 24px;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-white);
}

.footer-ig {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 700;
  transition: opacity 0.2s;
}

.footer-ig:hover {
  opacity: 0.75;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ============================================================
   ANIMACIONES SCROLL
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ============================================================
   RESPONSIVE — TABLET (640px+)
   ============================================================ */
@media (min-width: 640px) {
  .cards-3 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

/* ============================================================
   RESPONSIVE — DESKTOP (900px+)
   ============================================================ */
@media (min-width: 900px) {
  :root {
    --section-padding: 100px 24px;
  }

  .hero {
    min-height: 85vh;
    padding: 100px 24px;
  }

  .hero-inner {
    flex-direction: row;
    text-align: left;
    justify-content: space-between;
    gap: 80px;
  }

  .hero-sub {
    margin: 0 0 32px;
  }

  .hero-urgency {
    text-align: left;
  }

  .book-cover-wrapper {
    width: 300px;
  }

  .book-cover {
    width: 300px;
  }

  .book-cover-placeholder {
    width: 300px;
    height: 420px;
  }

  .autora-inner {
    flex-direction: row;
    text-align: left;
    gap: 60px;
    align-items: flex-start;
  }

  .autora-bio p {
    margin-bottom: 16px;
  }

  .instagram-link {
    margin-top: 4px;
  }

  .photo-placeholder {
    display: flex;
  }
}