/* ==========================================================================
   BETTER LEADER ACADEMY — SISTEMA DE DISEÑO v5 PREMIUM
   Experiencia editorial premium · Monograma oficial integrado
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tokens de diseño
   -------------------------------------------------------------------------- */
:root {
  --color-cream: #FAF8F5;
  --color-cream-dark: #F5F2ED;
  --color-ivory: #F0EDE8;
  --color-charcoal: #1A1A1A;
  --color-charcoal-light: #2D2D2D;
  --color-gold: #C9A962;
  --color-gold-light: #D4BC7A;
  --color-gold-dark: #B89A4F;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #6B6B6B;
  --color-text-light: #888888;
  
  --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  --section-xl: 10rem;
  --section-lg: 8rem;
  --section-md: 6rem;
  --section-sm: 4rem;
  
  --container-max: 1280px;
  --container-narrow: 900px;
  
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.2s ease-out;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-cream);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Tipografía editorial
   -------------------------------------------------------------------------- */
.headline-hero {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.headline-section {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.headline-subsection {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 500;
  line-height: 1.2;
}

.text-body-large {
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  line-height: 1.7;
  font-weight: 400;
}

.text-body {
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 400;
}

.text-small {
  font-size: 0.875rem;
  line-height: 1.6;
}

.label-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
}

/* --------------------------------------------------------------------------
   Contenedores
   -------------------------------------------------------------------------- */
.container-full {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: clamp(1.5rem, 5vw, 4rem);
  padding-right: clamp(1.5rem, 5vw, 4rem);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding-left: clamp(1.5rem, 5vw, 4rem);
  padding-right: clamp(1.5rem, 5vw, 4rem);
}

/* --------------------------------------------------------------------------
   Espaciado de secciones
   -------------------------------------------------------------------------- */
.section-hero {
  padding-top: clamp(6rem, 12vh, 10rem);
  padding-bottom: clamp(4rem, 8vh, 6rem);
}

.section-xl {
  padding-top: var(--section-xl);
  padding-bottom: var(--section-xl);
}

.section-lg {
  padding-top: var(--section-lg);
  padding-bottom: var(--section-lg);
}

.section-md {
  padding-top: var(--section-md);
  padding-bottom: var(--section-md);
}

.section-sm {
  padding-top: var(--section-sm);
  padding-bottom: var(--section-sm);
}

/* --------------------------------------------------------------------------
   Navegación premium (única instancia)
   -------------------------------------------------------------------------- */
.nav-sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(26, 26, 26, 0.06);
  transition: var(--transition-smooth);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  position: relative;
}

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

.nav-link.active {
  color: var(--color-gold);
}

/* --------------------------------------------------------------------------
   Monograma oficial — integración limpia
   El fondo blanco del JPG se funde con el fondo de la página (#FAF8F5).
   Uso mix-blend-mode: multiply para eliminar el blanco visible del JPG
   sobre fondos claros. Sobre fondos oscuros, usar la variante invertida.
   -------------------------------------------------------------------------- */
.monograma {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.monograma img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}

/* Variante sobre fondos oscuros: sin blend, con fondo redondeado sutil */
.monograma-dark img {
  mix-blend-mode: normal;
  border-radius: 4px;
}

/* Logo completo (horizontal) en header */
.logo-full {
  height: 36px;
  width: auto;
  mix-blend-mode: multiply;
}

/* --------------------------------------------------------------------------
   Botones premium
   -------------------------------------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background-color: var(--color-charcoal);
  color: var(--color-cream);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: var(--transition-smooth);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--color-gold);
  color: var(--color-charcoal);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background-color: transparent;
  color: var(--color-charcoal);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--color-charcoal);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--color-charcoal);
  color: var(--color-cream);
}

.btn-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background-color: var(--color-gold);
  color: var(--color-charcoal);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition-smooth);
  border: none;
  cursor: pointer;
}

.btn-gold:hover {
  background-color: var(--color-gold-dark);
}

.btn-outline-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background-color: transparent;
  color: var(--color-gold);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--color-gold);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn-outline-gold:hover {
  background-color: var(--color-gold);
  color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   Formularios premium
   -------------------------------------------------------------------------- */
.form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  background-color: var(--color-cream);
  border: 1px solid rgba(26, 26, 26, 0.12);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  transition: var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.01em;
}

.form-select {
  width: 100%;
  padding: 1rem 1.25rem;
  background-color: var(--color-cream);
  border: 1px solid rgba(26, 26, 26, 0.12);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236B6B6B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
}

.form-select:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background-color: var(--color-cream);
  border: 1px solid rgba(26, 26, 26, 0.12);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  resize: vertical;
  min-height: 120px;
  transition: var(--transition-smooth);
  font-family: var(--font-sans);
}

.form-textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

/* --------------------------------------------------------------------------
   Elementos decorativos
   -------------------------------------------------------------------------- */
.gold-line {
  width: 60px;
  height: 2px;
  background-color: var(--color-gold);
}

.gold-line-lg {
  width: 100px;
  height: 2px;
  background-color: var(--color-gold);
}

.gold-line-center {
  margin-left: auto;
  margin-right: auto;
}

.divider-light {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(26, 26, 26, 0.1), transparent);
}

.divider-gold {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

/* --------------------------------------------------------------------------
   Tarjetas premium
   -------------------------------------------------------------------------- */
.card-premium {
  background-color: white;
  border: 1px solid rgba(26, 26, 26, 0.06);
  transition: var(--transition-smooth);
}

.card-premium:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.card-dark {
  background-color: var(--color-charcoal-light);
  border: 1px solid rgba(201, 169, 98, 0.2);
}

/* --------------------------------------------------------------------------
   Etiquetas
   -------------------------------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.875rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tag-dark {
  background-color: var(--color-charcoal);
  color: var(--color-gold);
}

.tag-gold {
  background-color: var(--color-gold);
  color: var(--color-charcoal);
}

.tag-outline {
  background-color: transparent;
  border: 1px solid rgba(26, 26, 26, 0.15);
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Animaciones
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* --------------------------------------------------------------------------
   Utilidades
   -------------------------------------------------------------------------- */
.text-balance {
  text-wrap: balance;
}

.bg-cream { background-color: var(--color-cream); }
.bg-cream-dark { background-color: var(--color-cream-dark); }
.bg-ivory { background-color: var(--color-ivory); }
.bg-charcoal { background-color: var(--color-charcoal); }
.bg-charcoal-light { background-color: var(--color-charcoal-light); }

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

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

/* --------------------------------------------------------------------------
   Menú móvil
   -------------------------------------------------------------------------- */
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-cream);
  border-top: 1px solid rgba(26, 26, 26, 0.08);
  padding: 1.5rem;
}

.mobile-menu.active {
  display: block;
}

/* --------------------------------------------------------------------------
   Responsive refinements
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .section-xl {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
  .section-lg {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
}

/* --------------------------------------------------------------------------
   Impresión
   -------------------------------------------------------------------------- */
@media print {
  .nav-sticky {
    display: none;
  }
  .section-xl, .section-lg, .section-md {
    padding: 2rem 0;
  }
}