/**
 * Elesor Studio — Base CSS
 * Reset moderno, variables de diseño, tipografía, componentes compartidos y accesibilidad WCAG 2.1 AA.
 */

:root {
  /* Paleta Corporativa Elesor Studio */
  --color-brand-primary: #0F172A;     /* Azul pizarra oscuro profundo */
  --color-brand-secondary: #0D9488;   /* Verde azulado / Teal tecnológico */
  --color-brand-accent: #F97316;      /* Naranja vibrante de contraste */
  --color-brand-accent-hover: #EA580C;
  --color-brand-light: #F8FAFC;       /* Fondo claro */
  --color-brand-surface: #FFFFFF;     /* Superficie tarjetas */
  --color-brand-border: #E2E8F0;      /* Bordes sutiles */
  --color-brand-text: #1E293B;        /* Texto principal (alto contraste 12.5:1) */
  --color-brand-text-muted: #64748B;  /* Texto secundario (contraste 4.8:1) */

  /* Tipografía fluida */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.6vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.35rem + 0.9vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.65rem + 1.2vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.95rem + 1.6vw, 3.25rem);

  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Elevaciones & Bordes */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);

  /* Transiciones */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1200px;
  --header-height: 76px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-brand-text);
  background-color: var(--color-brand-light);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img, svg, picture, video {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: transparent;
}

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

/* Enfoque accesible */
:focus-visible {
  outline: 3px solid var(--color-brand-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Skip to content link (WCAG 2.4.1) */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-brand-accent);
  color: #FFFFFF;
  padding: var(--space-3) var(--space-6);
  font-weight: 700;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Accesibilidad lectores de pantalla */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Contenedor principal */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

/* ==========================================================================
   HEADER Y NAVEGACIÓN COMPARTIDA
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  color: #FFFFFF;
  display: flex;
  align-items: center;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.nav-logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: none;
  list-style: none;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: #FFFFFF;
  background-color: rgba(255, 255, 255, 0.08);
}

/* Botón menú móvil (hamburguesa) */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  z-index: 1002;
}

.nav-toggle-bar {
  width: 22px;
  height: 2px;
  background-color: #FFFFFF;
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Menú móvil desplegable */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.98);
  padding: var(--space-6) var(--space-4);
  z-index: 1001;
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  display: block;
  font-size: var(--text-lg);
  font-weight: 700;
  padding: var(--space-3) var(--space-4);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-brand-accent);
}

@media (min-width: 900px) {
  .nav-links {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
}

/* ==========================================================================
   BOTONES COMPARTIDOS (Mínimo 44px de área táctil)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-3) var(--space-6);
  font-weight: 700;
  font-size: var(--text-base);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary {
  background-color: var(--color-brand-accent);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}

.btn-primary:hover {
  background-color: var(--color-brand-accent-hover);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.45);
}

.btn-secondary {
  background-color: var(--color-brand-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.2);
}

.btn-secondary:hover {
  background-color: #1E293B;
}

.btn-outline {
  border: 2px solid currentColor;
  background-color: transparent;
  color: inherit;
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Botón Google Play Badge Placeholder */
.play-badge-placeholder {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 56px;
  padding: var(--space-2) var(--space-5);
  background: #000000;
  color: #FFFFFF;
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.play-badge-placeholder:hover {
  border-color: #94A3B8;
  transform: translateY(-2px);
}

.play-badge-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.play-badge-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.play-badge-sub {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #94A3B8;
  line-height: 1.1;
}

.play-badge-title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
}

.play-badge-status {
  font-size: 0.68rem;
  color: #FBBF24;
  margin-top: 2px;
  font-weight: 600;
}

/* ==========================================================================
   CONTENEDOR 16:9 OBLIGATORIO PARA SCREENSHOTS
   ========================================================================== */
.media-16-9 {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #0F172A;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.media-16-9 img, .media-16-9 svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   IMÁGENES REALES (No deformadas, object-fit contain, sombra sutil)
   ========================================================================== */
.app-icon-real {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-xl);
  object-fit: contain;
  box-shadow: var(--shadow-lg);
  background: #FFFFFF;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .app-icon-real {
    width: 140px;
    height: 140px;
  }
}

/* ==========================================================================
   TARJETAS COMPARTIDAS
   ========================================================================== */
.card {
  background: var(--color-brand-surface);
  border: 1px solid var(--color-brand-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}

/* ==========================================================================
   SECCIONES Y LAYOUT COMÚN
   ========================================================================== */
.section-py {
  padding-block: var(--space-12);
}

@media (min-width: 768px) {
  .section-py {
    padding-block: var(--space-20);
  }
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-brand-secondary);
  margin-bottom: var(--space-2);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-brand-primary);
  margin-bottom: var(--space-3);
}

.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-brand-text-muted);
}

/* ==========================================================================
   ALERTAS Y CALLOUTS DE SEGURIDAD / CONFIANZA
   ========================================================================== */
.trust-banner {
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-8);
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.trust-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.trust-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #166534;
}

.trust-desc {
  font-size: var(--text-xs);
  color: #15803D;
  margin-top: 2px;
}

/* ==========================================================================
   FORMULARIO DE CONTACTO
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-4);
  text-align: left;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-brand-text);
  margin-bottom: var(--space-2);
}

.form-control {
  width: 100%;
  min-height: 48px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-brand-border);
  border-radius: var(--radius-md);
  background-color: #FFFFFF;
  color: var(--color-brand-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

.form-control:focus {
  border-color: var(--color-brand-secondary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.form-notice {
  font-size: var(--text-xs);
  color: var(--color-brand-text-muted);
  margin-top: var(--space-2);
}

/* Campo Honeypot anti-spam (oculto a humanos, accesible a bots) */
.honeypot-field {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ==========================================================================
   FOOTER COMPARTIDO
   ========================================================================== */
.site-footer {
  background-color: #0B1120;
  color: #94A3B8;
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: var(--space-3);
}

.footer-tagline {
  font-size: var(--text-sm);
  line-height: 1.6;
  max-width: 320px;
  margin-bottom: var(--space-4);
}

.footer-column-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--text-sm);
  color: #94A3B8;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: #64748B;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   ANIMACIONES REVEAL ON SCROLL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Soporte prefers-reduced-motion (WCAG 2.3.3) */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}