/* ==========================================================================
   LANDING PAGE: PROFESORA PARTICULAR DE INGLÉS
   ESTÉTICA: WARM EDITORIAL EDUCATION
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES & CSS CUSTOM PROPERTIES
   -------------------------------------------------------------------------- */
:root {
  /* Paleta cromática: Warm Editorial */
  --color-bg: #FAF8F5;              /* Crema / Lino cálido principal */
  --color-bg-alt: #F3EFEA;          /* Crema suave secundario */
  --color-surface: #FFFFFF;         /* Superficie limpia */
  --color-surface-warm: #F8F4EE;    /* Superficie cálida */
  
  --color-primary: #2C4336;         /* Verde salvia profundo / inglés suave */
  --color-primary-light: #3D5A49;   /* Verde salvia medio */
  --color-primary-soft: #EAF0EB;    /* Tinte verde muy suave */
  --color-primary-text: #FFFFFF;    /* Texto sobre fondo primario */

  --color-accent: #C66B4E;          /* Terracota / Coral cálido suave */
  --color-accent-hover: #B05B40;    /* Terracota hover */
  --color-accent-soft: #F9EBE6;     /* Terracota muy suave */

  --color-text: #212220;            /* Gris carbón cálido muy oscuro */
  --color-text-muted: #5E605C;      /* Gris intermedio para párrafos */
  --color-text-light: #7E807B;      /* Gris claro para microcopy / metadata */
  
  --color-border: #E6DFD4;          /* Borde arena sutil */
  --color-border-dark: #D4CBC0;     /* Borde más marcado */

  /* Tipografías */
  --font-serif: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Escala tipográfica fluida */
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.825rem + 0.2vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.3vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.35rem + 0.6vw, 1.875rem);
  --text-3xl: clamp(1.85rem, 1.5rem + 1.2vw, 2.5rem);
  --text-4xl: clamp(2.2rem, 1.8rem + 1.8vw, 3.25rem);
  --text-display: clamp(2.1rem, 1.6rem + 2.4vw, 4.25rem);

  /* Espaciado modular */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5.5rem;
  --space-3xl: 7.5rem;

  /* Contenedores */
  --container-max: 1200px;
  --container-narrow: 840px;
  --container-padding: clamp(1.25rem, 4vw, 2.5rem);

  /* Radios de borde sutiles (editorial, no software) */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  /* Sombras y transiciones */
  --shadow-sm: 0 2px 8px rgba(33, 34, 32, 0.04);
  --shadow-md: 0 8px 24px rgba(33, 34, 32, 0.06);
  --shadow-lg: 0 16px 40px rgba(33, 34, 32, 0.08);
  --shadow-floating: 0 12px 32px rgba(44, 67, 54, 0.18);
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  letter-spacing: -0.01em;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

/* Skip link accesible */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1.5rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1.5rem;
  outline: 3px solid var(--color-accent);
}

/* Focus accesible visible */
:focus-visible {
  outline: 2.5px solid var(--color-accent);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   3. TIPOGRAFÍA Y UTILIDADES EDITORIALES
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-eyebrow::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 2px;
  background-color: var(--color-accent);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  position: relative;
}

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

/* Micro-badge para resaltar conceptos */
.editorial-badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  border: 1px solid rgba(44, 67, 54, 0.12);
}

/* --------------------------------------------------------------------------
   4. BOTONES & CTAS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  box-shadow: 0 4px 14px rgba(44, 67, 54, 0.16);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(44, 67, 54, 0.22);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(198, 107, 78, 0.2);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(198, 107, 78, 0.28);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  font-weight: 500;
  padding: 0.85rem 1.6rem;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.75);
  border-color: var(--color-border-dark);
  color: var(--color-text);
  transform: translateY(-2px);
}

.btn-link {
  padding: 0.5rem 0;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1.5px solid currentColor;
  border-radius: 0;
}

.btn-link:hover {
  color: var(--color-accent);
  gap: 0.8rem;
}

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

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   5. HEADER & NAVEGACIÓN
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 500;
  background-color: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header.is-scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-link {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  line-height: 1.1;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.brand-tagline {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-top: 2px;
}

/* Nav Desktop */
.main-nav {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1.5px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

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

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

.header-cta-desktop {
  display: none;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  gap: 5px;
  z-index: 600;
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Estado activo del toggle mobile */
.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: calc(100vh - 80px);
  background-color: var(--color-bg);
  padding: var(--space-xl) var(--container-padding);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth), visibility var(--transition-smooth);
  z-index: 550;
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
}

.mobile-drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-link {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

.mobile-drawer-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

body.menu-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: clamp(1.5rem, 3vw, 2.75rem);
  padding-bottom: clamp(2.5rem, 4vw, 4.25rem);
}

.hero-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-headline {
  font-size: var(--text-display);
  margin-top: var(--space-xs);
  margin-bottom: 0.85rem;
  color: var(--color-text);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.hero-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 1.35rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.75rem;
}

@media (max-width: 640px) {
  .hero-section {
    padding-top: 1.25rem;
    padding-bottom: 2.25rem;
  }

  .hero-grid {
    gap: 1.5rem;
  }

  .hero-headline {
    margin-bottom: 0.65rem;
  }

  .hero-lead {
    font-size: 0.975rem;
    line-height: 1.55;
    margin-bottom: 1.15rem;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    margin-bottom: 1.15rem;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .hero-badges-row {
    padding-top: 0.75rem !important;
    gap: 0.35rem 0.85rem !important;
  }

  .hero-feature-item {
    font-size: 0.7rem !important;
  }

  .hero-editorial-accent {
    position: static !important;
    margin-top: 0.85rem !important;
    max-width: 100% !important;
    padding: 0.55rem 0.85rem !important;
    justify-content: center;
  }
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.hero-feature-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-feature-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

/* Hero Media / Frame Editorial */
.hero-media {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: var(--color-bg-alt);
  aspect-ratio: 4 / 5;
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 12%;
}

/* Elemento editorial flotante sutil (callout complementario discreto) */
.hero-editorial-accent {
  position: absolute;
  bottom: -12px;
  right: -10px;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(33, 34, 32, 0.06);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  max-width: 215px;
}

.hero-editorial-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.hero-editorial-accent p {
  font-size: 0.72rem;
  line-height: 1.35;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   7. SECCIÓN DE IDENTIFICACIÓN / EMPATÍA
   (Composición editorial abierta: lista con divisores hairline y números DM Serif)
   -------------------------------------------------------------------------- */
.identification-section {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.identification-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-xl);
}

.identification-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
  color: var(--color-text);
}

.situations-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.situation-item {
  background-color: transparent;
  padding: 1.5rem 1rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  transition: background-color var(--transition-fast);
}

.situation-item:last-child {
  border-bottom: none;
}

.situation-item:hover {
  background-color: rgba(255, 255, 255, 0.45);
}

.situation-indicator {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-accent);
  line-height: 1.1;
  font-weight: 400;
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.situation-content {
  display: flex;
  flex-direction: column;
}

.situation-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.situation-quote {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  line-height: 1.4;
  color: var(--color-text);
}

.identification-closing {
  text-align: center;
  padding: 1.75rem 2rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  max-width: 620px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.identification-closing p {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  line-height: 1.25;
  font-style: italic;
}

/* --------------------------------------------------------------------------
   8. CLASES / SERVICIOS (PROGRAMA EDITORIAL / SYLLABUS)
   -------------------------------------------------------------------------- */
.classes-header {
  max-width: 640px;
  margin-bottom: var(--space-xl);
}

.classes-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
}

.classes-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.class-card {
  background-color: transparent;
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 0.5rem;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-fast);
}

.class-card:last-child {
  border-bottom: none;
}

.class-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.class-number {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  color: var(--color-accent);
  line-height: 1;
}

.class-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
}

.class-name {
  font-size: var(--text-2xl);
  margin-bottom: 0.75rem;
  color: var(--color-text);
  line-height: 1.25;
}

.class-description {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.class-footer {
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   9. SOBRE MÍ
   -------------------------------------------------------------------------- */
.about-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.about-media {
  position: relative;
  display: flex;
  justify-content: center;
}

.about-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 340px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: var(--color-bg);
  aspect-ratio: 4 / 5;
}

.about-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
}

.about-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
  margin-bottom: var(--space-md);
}

.about-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

.about-text p + p {
  margin-top: 1rem;
}

/* Métricas / Credenciales (3 columnas fluidas y compactas en mobile) */
.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
  text-align: center;
}

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

.stat-value {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-top: 0.35rem;
  line-height: 1.3;
}

/* --------------------------------------------------------------------------
   10. MÉTODO (TIMELINE / RECORRIDO CONTINUO EN 4 HITOS)
   -------------------------------------------------------------------------- */
.method-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-xl);
}

.method-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
}

.method-timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-bottom: var(--space-2xl);
  padding-left: 2.25rem;
}

/* Línea conectora vertical en mobile */
.method-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 14px;
  bottom: 20px;
  width: 2px;
  background-color: var(--color-border);
}

.method-step-node {
  position: relative;
}

.step-milestone {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.step-node-dot {
  position: absolute;
  left: -2.25rem;
  top: 0.4rem;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 3px solid var(--color-accent);
}

.step-number {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  line-height: 1;
  color: var(--color-accent);
}

.step-name {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.step-text {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.35;
}

.method-quote-highlight {
  text-align: center;
  padding: 2rem 1.75rem;
  background-color: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
  max-width: 760px;
  margin: 0 auto;
}

.method-quote-highlight blockquote {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--color-primary);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   11. EXPERIENCIA DE APRENDIZAJE (MOODBOARD ASIMÉTRICO)
   -------------------------------------------------------------------------- */
.experience-header {
  max-width: 700px;
  margin-bottom: var(--space-lg);
}

.experience-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
}

.experience-concepts-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: var(--space-xl);
}

.concept-pill {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

.concept-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* Grilla compacta en mobile: 1 imagen superior + 2 imágenes secundarias en fila */
.experience-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background-color: var(--color-bg-alt);
}

.gallery-item-featured {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 9;
}

.gallery-item-secondary {
  aspect-ratio: 4 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 10%;
}

/* Bloque de Formación Profesional y Credenciales Reales */
.credentials-container {
  margin-top: var(--space-2xl);
  padding: 2.25rem 2rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.credentials-header-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.credentials-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.credentials-title {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  color: var(--color-text);
}

.credentials-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.credentials-item {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.credentials-dot {
  color: var(--color-accent);
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   12. TESTIMONIOS (JERARQUÍA EDITORIAL: DESTACADO + SECUNDARIOS)
   -------------------------------------------------------------------------- */
.testimonials-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.testimonials-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
}

.testimonials-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 1040px;
  margin: 0 auto;
}

.testimonial-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
}

/* Testimonio 01 Protagónico / Destacado */
.testimonial-card-featured {
  padding: 2.25rem 2rem;
  border-left: 4px solid var(--color-accent);
}

.testimonial-card-featured .testimonial-quote-mark {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  line-height: 0.8;
  color: var(--color-accent-soft);
  margin-bottom: 0.75rem;
  user-select: none;
}

.testimonial-card-featured .testimonial-text {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  line-height: 1.45;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 1.75rem;
}

/* Testimonios Secundarios */
.testimonials-secondary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.testimonial-card-secondary {
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-card-secondary .testimonial-quote-mark {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  line-height: 0.8;
  color: var(--color-accent-soft);
  margin-bottom: 0.5rem;
  user-select: none;
}

.testimonial-card-secondary .testimonial-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  font-style: italic;
  margin-bottom: 1.25rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

.author-avatar-placeholder {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
}

.author-name {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   13. FAQ (ACORDEÓN ACCESIBLE Y COMPACTO)
   -------------------------------------------------------------------------- */
.faq-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-xl);
}

.faq-title {
  font-size: var(--text-3xl);
  margin-top: var(--space-xs);
}

.faq-accordion {
  max-width: var(--container-narrow);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.is-open {
  border-color: var(--color-primary-light);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.25rem;
  text-align: left;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  gap: 1rem;
  background: transparent;
  transition: color var(--transition-fast);
}

.faq-trigger:hover {
  color: var(--color-primary);
}

.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  flex-shrink: 0;
  font-size: 0.85rem;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.faq-trigger[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
}

.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-smooth);
}

.faq-panel.is-open {
  grid-template-rows: 1fr;
}

.faq-content {
  overflow: hidden;
}

.faq-content-inner {
  padding: 0 1.25rem 1.25rem 1.25rem;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.65;
  border-top: 1px solid transparent;
}

/* --------------------------------------------------------------------------
   14. SECCIÓN CTA FINAL
   -------------------------------------------------------------------------- */
.cta-final-section {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  text-align: center;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.cta-final-box {
  max-width: 720px;
  margin: 0 auto;
}

.cta-final-headline {
  font-family: var(--font-serif);
  font-size: var(--text-4xl);
  color: #FFFFFF;
  margin-bottom: var(--space-xs);
  line-height: 1.1;
}

.cta-final-sub {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: var(--space-xl);
}

.cta-final-btn {
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: var(--text-base);
  padding: 1.15rem 2.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.cta-final-btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

/* --------------------------------------------------------------------------
   15. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: var(--space-xl);
}

.footer-brand .brand-name {
  font-size: 1.5rem;
}

.footer-links-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

.footer-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  font-size: var(--text-xs);
  color: var(--color-text-light);
}

.footer-credit {
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   16. WHATSAPP FLOTANTE
   -------------------------------------------------------------------------- */
.floating-whatsapp {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 400;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #25D366;
  color: #FFFFFF;
  box-shadow: var(--shadow-floating);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth), background-color var(--transition-fast);
}

.floating-whatsapp svg {
  width: 30px;
  height: 30px;
  fill: currentColor;
}

.floating-whatsapp.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.floating-whatsapp:hover {
  background-color: #20BA5C;
  transform: translateY(-3px) scale(1.05);
}

/* Toast de feedback para placeholders sin navegación */
.placeholder-toast {
  position: fixed;
  bottom: 5.5rem;
  right: 1.5rem;
  z-index: 600;
  background-color: var(--color-text);
  color: #FFFFFF;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  max-width: 300px;
}

.placeholder-toast.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   17. REVEAL ANIMATIONS (OBSERVER)
   -------------------------------------------------------------------------- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   18. MEDIA QUERIES (MOBILE, TABLET & DESKTOP)
   -------------------------------------------------------------------------- */

/* MOBILE REFINEMENTS (<= 767px) */
@media (max-width: 767px) {
  .section {
    padding-top: 2.75rem;
    padding-bottom: 2.75rem;
  }

  .identification-header,
  .classes-header,
  .method-header,
  .experience-header,
  .testimonials-header,
  .faq-header {
    margin-bottom: 1.5rem;
  }

  .about-grid {
    gap: 1.75rem;
  }

  .about-content {
    margin-top: 0;
  }

  .method-timeline {
    margin-bottom: 2rem;
  }

  .experience-concepts-row {
    margin-bottom: 1.5rem;
  }

  .credentials-container {
    padding: 1.75rem 1.25rem;
    margin-top: 1.5rem;
  }

  .cta-final-section {
    padding-top: 3.25rem;
    padding-bottom: 3.25rem;
  }

  .cta-final-sub {
    margin-bottom: 1.75rem;
  }

  .footer-links-list {
    gap: 1rem 1.5rem;
  }
}

/* TABLET (>= 768px) */
@media (min-width: 768px) {
  /* Identificación Cuadrícula 2x2 abierta */
  .situations-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .situation-item {
    padding: 2rem 2.25rem;
  }

  .situation-item:nth-child(odd) {
    border-right: 1px solid var(--color-border);
  }

  .situation-item:nth-child(3),
  .situation-item:nth-child(4) {
    border-bottom: none;
  }

  /* Clases Programa 2x2 arquitectónico */
  .classes-grid {
    grid-template-columns: repeat(2, 1fr);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .class-card {
    padding: 2.75rem 2.25rem;
    border-bottom: 1px solid var(--color-border);
  }

  .class-card:nth-child(odd) {
    border-right: 1px solid var(--color-border);
  }

  .class-card:nth-child(3),
  .class-card:nth-child(4) {
    border-bottom: none;
  }

  .class-card:hover {
    background-color: var(--color-surface-warm);
  }

  /* Sobre mí métricas tablet */
  .about-stats-grid {
    gap: 1.5rem;
    padding: 1.75rem 0;
  }

  .stat-value {
    font-size: var(--text-2xl);
  }

  .stat-label {
    font-size: var(--text-xs);
  }

  /* Testimonios: 1 destacado + 2 secundarios en columnas */
  .testimonial-card-featured {
    padding: 3rem 3.5rem;
  }

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

  /* Bloque de credenciales tablet */
  .credentials-container {
    padding: 2.75rem 3rem;
  }

  .footer-top {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* DESKTOP (>= 1024px) */
@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }

  .main-nav {
    display: block;
  }

  .header-cta-desktop {
    display: inline-flex;
  }

  /* Hero Composición 55 / 45 (Aprobada, no tocar) */
  .hero-grid {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2xl);
  }

  .hero-content {
    flex: 0 0 54%;
  }

  .hero-media {
    flex: 0 0 42%;
  }

  /* Sobre mí Split */
  .about-grid {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2xl);
  }

  .about-media {
    flex: 0 0 45%;
  }

  .about-image-wrapper {
    max-width: 480px;
  }

  .about-content {
    flex: 0 0 50%;
  }

  /* Método Recorrido Continuo Horizontal */
  .method-timeline {
    flex-direction: row;
    padding-left: 0;
    gap: 2.25rem;
    padding-top: 1.5rem;
  }

  .method-timeline::before {
    left: 12px;
    right: 12px;
    top: 2.35rem;
    bottom: auto;
    width: calc(100% - 24px);
    height: 2px;
  }

  .method-step-node {
    flex: 1;
    padding-top: 2.25rem;
  }

  .step-milestone {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
  }

  .step-node-dot {
    position: absolute;
    top: 0;
    left: 0;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
  }

  .step-number {
    font-size: 2.25rem;
  }

  .step-text {
    font-size: var(--text-lg);
  }

  /* Experiencia Moodboard Asimétrico */
  .experience-gallery-grid {
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: repeat(2, 230px);
    gap: 1.5rem;
  }

  .gallery-item-featured {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
    aspect-ratio: auto;
    height: 100%;
  }

  .gallery-item-secondary {
    aspect-ratio: auto;
    height: 100%;
  }

  /* CTA Final Cierre con Máximo Impacto */
  .cta-final-section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }
}

/* --------------------------------------------------------------------------
   19. ACCESIBILIDAD / PREFERS-REDUCED-MOTION
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
  }
}