/* ==========================================================================
   ¡Feliz Día Mamá! - Estilos Modernos y Emotivos
   Color Primario de Marca: RGB(75, 175, 120) / #4BAF78
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES DE TEMA & CONFIGURACIÓN
   -------------------------------------------------------------------------- */
:root {
  /* Color Principal de Marca Requerido */
  --primary-rgb: 75, 175, 120;
  --primary: rgb(var(--primary-rgb)); /* #4BAF78 */
  --primary-dark: #3a9763;
  --primary-darker: #2d774e;
  --primary-light: #eaf7f0;
  --primary-ultra-light: #f4faf6;
  --primary-gradient: linear-gradient(135deg, #5fc38e 0%, #4baf78 50%, #3a9763 100%);
  --primary-glow: rgba(75, 175, 120, 0.35);

  /* Paleta Complementaria Elegante & Cálida */
  --bg-main: #fbfbf9;
  --bg-card: #ffffff;
  --bg-accent: #f5f9f6;
  --text-main: #1f2d26;
  --text-muted: #526359;
  --text-light: #7b8e84;
  --border-soft: rgba(75, 175, 120, 0.15);
  --border-hover: rgba(75, 175, 120, 0.4);
  
  /* Sombras Modernas y Suaves */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 30px rgba(75, 175, 120, 0.08);
  --shadow-lg: 0 20px 40px rgba(75, 175, 120, 0.14);
  --shadow-card: 0 12px 32px rgba(31, 45, 38, 0.06);

  /* Tipografías */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-hand: 'Caveat', cursive, sans-serif;

  /* Transiciones */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Canvas para efectos interactivos */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

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

/* --------------------------------------------------------------------------
   3. BARRA DE NAVEGACIÓN
   -------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  transition: transform var(--transition-fast);
}

.nav-logo:hover {
  transform: scale(1.04);
}

.logo-heart {
  font-size: 1.25rem;
  display: inline-block;
  animation: softPulse 2.5s infinite ease-in-out;
}

.logo-text {
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav-link {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-btn {
  background: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid var(--border-soft);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-btn:hover {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--primary-glow);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   4. BOTONES & COMPONENTES COMUNES
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.9rem;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  line-height: 1;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 8px 24px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.7s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(75, 175, 120, 0.45);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border: 1.5px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--primary-ultra-light);
  border-color: var(--primary);
  color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-large {
  padding: 1.15rem 2.4rem;
  font-size: 1.1rem;
}

.pulse-btn {
  animation: glowPulse 2.8s infinite;
}

@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 6px 20px rgba(75, 175, 120, 0.35);
  }
  50% {
    box-shadow: 0 10px 32px rgba(75, 175, 120, 0.65);
    transform: scale(1.02);
  }
}

/* --------------------------------------------------------------------------
   5. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: 4.5rem 1.5rem 5rem;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(75, 175, 120, 0.12) 0%, rgba(251, 251, 249, 0) 70%);
}

.hero-container {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #ffffff;
  border: 1px solid var(--border-soft);
  padding: 0.45rem 1.25rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 1.8rem;
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 4.4rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-main);
  margin-bottom: 1.3rem;
  letter-spacing: -0.02em;
}

.highlight-text {
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.highlight-text::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 6px;
  width: 100%;
  height: 12px;
  background: rgba(75, 175, 120, 0.2);
  z-index: -1;
  border-radius: 4px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.4rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn-secondary:hover .btn-arrow {
  transform: translateY(3px);
}

.hero-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  max-width: 820px;
  margin: 0 auto;
}

.feature-chip {
  background: #ffffff;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 1.2rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.feature-chip:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.chip-icon {
  font-size: 1.8rem;
  background: var(--primary-light);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  flex-shrink: 0;
}

.feature-chip strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 0.15rem;
}

.feature-chip p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* --------------------------------------------------------------------------
   6. SECCIONES GENERALES
   -------------------------------------------------------------------------- */
.section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-hand);
  font-size: 1.35rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.4rem;
  letter-spacing: 0.04em;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.7rem);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
  margin-bottom: 0.8rem;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 0.8rem auto 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   7. SECCIÓN FAVORITOS (DELFÍN & POLINESIA)
   -------------------------------------------------------------------------- */
.favorites-section {
  background: linear-gradient(180deg, rgba(251, 251, 249, 0) 0%, rgba(234, 247, 240, 0.4) 100%);
}

.cards-duo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.2rem;
}

.favorite-card {
  background: var(--bg-card);
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.favorite-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
}

.card-image-wrapper {
  position: relative;
  width: 100%;
  height: 270px;
  overflow: hidden;
  background-color: var(--primary-ultra-light);
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.favorite-card:hover .card-image {
  transform: scale(1.06);
}

.card-badge {
  position: absolute;
  top: 1.1rem;
  left: 1.1rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border-soft);
}

.card-content {
  padding: 2rem 2.2rem 2.2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.9rem;
}

.card-text {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}

/* --------------------------------------------------------------------------
   8. SECCIÓN MENÚ ESPECIAL
   -------------------------------------------------------------------------- */
.menu-section {
  background-color: #ffffff;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2.2rem;
}

.menu-card {
  background: var(--bg-main);
  border-radius: 24px;
  border: 1.5px solid var(--border-soft);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.menu-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.menu-image-container {
  position: relative;
  width: 100%;
  height: 250px;
  overflow: hidden;
  background-color: #f0f0ea;
}

.menu-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-card:hover .menu-image {
  transform: scale(1.06);
}

.menu-price-tag {
  position: absolute;
  bottom: 1.1rem;
  right: 1.1rem;
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.menu-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.menu-rating {
  font-size: 0.9rem;
  color: #f59e0b;
  margin-bottom: 0.6rem;
}

.rating-note {
  font-family: var(--font-sans);
  color: var(--text-light);
  font-size: 0.82rem;
  font-weight: 500;
  margin-left: 0.3rem;
}

.menu-title {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.85rem;
}

.menu-description {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.3rem;
  flex-grow: 1;
}

.menu-highlight {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  background: var(--primary-light);
  border-radius: 12px;
  font-size: 0.85rem;
  color: var(--primary-dark);
  font-weight: 600;
}

.highlight-icon {
  font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   9. BANNER INTERACTIVO: ABRAZOS VIRTUALES
   -------------------------------------------------------------------------- */
.interactive-banner {
  padding: 3rem 0;
}

.interactive-box {
  background: linear-gradient(135deg, #ffffff 0%, var(--primary-ultra-light) 100%);
  border: 1.5px solid var(--border-soft);
  border-radius: 28px;
  padding: 3.5rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.interactive-box::before {
  content: '❤️';
  position: absolute;
  top: -20px;
  right: -20px;
  font-size: 7rem;
  opacity: 0.05;
  pointer-events: none;
}

.interactive-content {
  max-width: 600px;
  margin: 0 auto;
}

.sub-label {
  display: inline-block;
  font-family: var(--font-hand);
  font-size: 1.4rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.interactive-content h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.3rem);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.9rem;
}

.interactive-content p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

.hug-counter-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.3rem;
}

.btn-hug {
  background: #ffffff;
  color: #e11d48;
  border: 2px solid #fda4af;
  padding: 1.05rem 2.2rem;
  font-size: 1.15rem;
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.15);
  cursor: pointer;
  border-radius: 999px;
  transition: all var(--transition-bounce);
}

.btn-hug:hover {
  transform: scale(1.06);
  background: #fff1f2;
  box-shadow: 0 10px 25px rgba(225, 29, 72, 0.25);
}

.btn-hug:active {
  transform: scale(0.95);
}

.hug-emoji {
  font-size: 1.4rem;
  display: inline-block;
  animation: softPulse 1.8s infinite ease-in-out;
}

.counter-display {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#hug-counter {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1;
}

.counter-label {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
  margin-top: 0.2rem;
}

/* --------------------------------------------------------------------------
   10. BANNER FINAL CTA
   -------------------------------------------------------------------------- */
.surprise-banner-section {
  padding: 4.5rem 1.5rem;
  background: radial-gradient(circle at center, rgba(75, 175, 120, 0.16) 0%, rgba(251, 251, 249, 0) 80%);
  text-align: center;
}

.surprise-heading {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--text-main);
  margin-bottom: 0.9rem;
}

.surprise-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2.2rem;
}

/* --------------------------------------------------------------------------
   11. PIE DE PÁGINA
   -------------------------------------------------------------------------- */
.footer {
  background: #ffffff;
  border-top: 1px solid var(--border-soft);
  padding: 3rem 1.5rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-heart {
  font-size: 2rem;
  margin-bottom: 0.8rem;
  display: inline-block;
  animation: softPulse 2.5s infinite ease-in-out;
}

.footer-text {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* --------------------------------------------------------------------------
   12. VENTANA MODAL / CARTA FLOTANTE EMOTIVA
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(18, 30, 24, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 660px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 28px;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

/* Estilo de Carta con textura cálida */
.letter-card {
  position: relative;
  background: #fffdfa;
  border: 2px solid rgba(75, 175, 120, 0.28);
  border-radius: 28px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3), 0 0 0 10px rgba(255, 255, 255, 0.4);
  padding: 3.5rem 2.8rem 2.8rem;
}

.modal-close {
  position: absolute;
  top: 1.4rem;
  right: 1.4rem;
  background: #f1f5f3;
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 1rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 5;
}

.modal-close:hover {
  background: var(--primary);
  color: #ffffff;
  transform: rotate(90deg);
}

/* Sello de cera vegetal */
.wax-seal {
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  width: 54px;
  height: 54px;
  background: var(--primary-gradient);
  border: 3px solid #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px var(--primary-glow);
}

.seal-icon {
  font-size: 1.5rem;
}

.letter-inner {
  text-align: center;
}

.letter-date {
  font-family: var(--font-hand);
  font-size: 1.25rem;
  color: var(--primary);
  font-weight: 700;
  display: block;
  margin-bottom: 0.5rem;
}

.letter-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 0.9rem;
}

.letter-divider {
  width: 70px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  margin: 0.9rem auto 1.8rem;
}

.letter-body {
  text-align: left;
  font-size: 1.05rem;
  color: #334155;
  line-height: 1.85;
}

.letter-paragraph {
  margin-bottom: 1.2rem;
}

.letter-paragraph strong {
  color: var(--text-main);
}

.letter-sign {
  font-family: var(--font-serif);
  margin-top: 1.8rem;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--border-soft);
  color: var(--text-main);
  font-size: 1.05rem;
  text-align: center;
}

.sign-name {
  display: block;
  font-family: var(--font-hand);
  font-size: 1.8rem;
  color: var(--primary-dark);
  font-weight: 700;
  margin-top: 0.4rem;
}

.letter-footer {
  margin-top: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   13. ANIMACIONES
   -------------------------------------------------------------------------- */
@keyframes softPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.15);
  }
}

.animate-fade-down {
  animation: fadeDown 0.8s ease-out forwards;
}

.animate-fade-up {
  animation: fadeUp 0.8s ease-out forwards;
}

.delay-1 {
  animation-delay: 0.2s;
}

.delay-2 {
  animation-delay: 0.4s;
}

.delay-3 {
  animation-delay: 0.6s;
}

@keyframes fadeDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   14. RESPONSIVE DESIGN
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }

  .nav-link {
    display: none; /* Simplificar menú en móviles para foco en CTA */
  }

  .hero-section {
    padding: 3.5rem 1rem 4rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .letter-card {
    padding: 3rem 1.6rem 2rem;
  }

  .interactive-box {
    padding: 2.5rem 1.5rem;
  }
}