/* ==========================================================================
   nerdlabs.ar — Design System
   Aesthetic inspired by Wagtail (Dark Theme, Kumbh Sans, 6px Radius, High Contrast)
   ========================================================================== */

:root {
  /* Wagtail-inspired Dark Palette */
  --color-bg: #262626;               /* Fondo principal característico */
  --color-surface: #121212;          /* Superficie de tarjetas y navbar */
  --color-surface-hover: #1a1a1a;    /* Hover en tarjetas */
  --color-footer-bg: #111111;        /* Fondo del pie de página */
  
  --color-text: #ffffff;             /* Títulos y textos principales */
  --color-text-muted: #c8c8c8;       /* Párrafos y descripciones */
  --color-meta: #949494;             /* Metadatos, fechas y tags secundarios */
  --color-border: #383838;           /* Bordes definidos y nítidos */
  --color-border-subtle: #242424;    /* Separadores internos */

  /* Dos colores secundarios seleccionados para nerdlabs */
  --color-sec-1: #00f0ff;            /* Acento 1: Cian Eléctrico tecnológico (links, activos, badges) */
  --color-sec-2: #8b5cf6;            /* Acento 2: Violeta / Púrpura Eléctrico (destacados, complementos) */
  --color-accent-amber: #ff764b;     /* Destacados / Featured */

  /* Tipografía oficial de Wagtail */
  --font-sans: 'Kumbh Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Botones y radios de Wagtail */
  --btn-radius: 6px;
  --card-radius: 8px;
  --tag-radius: 6px;

  --container-max: 1200px;
  --transition: all 0.22s ease-out;
}

/* Base Reset & Document Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  line-height: 1.6;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 4.5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.15rem; }

.gradient-text {
  color: var(--color-sec-1);
}

.text-muted { color: var(--color-text-muted); }
.text-dim { color: var(--color-meta); }
.text-mono { font-family: var(--font-mono); }

/* Containers & Spacing */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  box-sizing: border-box;
}

@media (max-width: 480px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

.main-content {
  flex: 1 0 auto;
}

.section-spacer {
  padding: 5.5rem 0;
}

@media (max-width: 768px) {
  .section-spacer {
    padding: 3.5rem 0;
  }
}

/* Header & Navigation (Estilo Wagtail) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: rgba(18, 18, 18, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
}

.brand-logo:hover {
  color: var(--color-sec-1);
}

.brand-logo-svg {
  height: 29px;
  width: auto;
  display: block;
  fill: currentColor;
  transition: transform var(--transition);
}

.brand-logo:hover .brand-logo-svg {
  filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.4));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-muted);
  position: relative;
  padding: 0.5rem 0;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-sec-1);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-sec-1);
  transition: width var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

.mobile-nav-cta {
  display: none;
}

/* Mobile Nav */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 0.5rem;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .desktop-cta {
    display: none !important;
  }
  .mobile-nav-cta {
    display: block;
    width: 100%;
    padding-top: 0.5rem;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 4.5rem;
    left: 0;
    width: 100%;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1.5rem 1.25rem 2rem;
    gap: 1.25rem;
    text-align: center;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
  }
  .nav-links.is-open {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 480px) {
  .brand-logo-svg {
    height: 24px;
  }
  .nav-container {
    height: 4rem;
  }
  .nav-links {
    top: 4rem;
  }
}

/* ==========================================================================
   Botones estilo Wagtail (6px Radius, Contraste Alto, Outline a Sólido)
   ========================================================================== */
.btn, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 12px 28px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--btn-radius);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  outline-offset: 4px;
  white-space: nowrap;
  line-height: 1.2;
  max-width: 100%;
  box-sizing: border-box;
}

@media (max-width: 600px) {
  .btn, .button {
    padding: 11px 18px;
    font-size: 0.875rem;
    white-space: normal;
    text-align: center;
    word-break: break-word;
  }
}

/* Botón principal: Outline blanco que se rellena de blanco al hover (firma Wagtail dark) */
.btn-primary {
  background-color: transparent;
  border: 1.5px solid #ffffff;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #ffffff;
  border-color: #ffffff;
  color: #111111;
}

/* Botón secundario: Color Secundario 1 (Cian tecnológico con texto negro) */
.btn-secondary {
  background-color: var(--color-sec-1);
  border: 1.5px solid var(--color-sec-1);
  color: #111111;
}

.btn-secondary:hover {
  background-color: transparent;
  color: var(--color-sec-1);
  border-color: var(--color-sec-1);
}

/* Botón neutro / sutil */
.btn-outline {
  background-color: transparent;
  border: 1.5px solid var(--color-border);
  color: #ffffff;
}

.btn-outline:hover {
  border-color: #ffffff;
}

/* ==========================================================================
   Filtros del Blog estilo Wagtail (.filters)
   ========================================================================== */
.filters {
  display: flex;
  flex-flow: row wrap;
  gap: 10px;
  margin: 2rem 0 3.5rem;
  list-style: none;
  padding: 0;
  border: 0;
  justify-content: center;
}

.filters__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 9px 18px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--tag-radius);
  background-color: var(--color-surface);
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.filters__label:hover {
  border-color: #ffffff;
  color: #ffffff;
}

.filters__label.is-active {
  border-color: var(--color-sec-1);
  background-color: var(--color-sec-1);
  color: #111111;
}

/* ==========================================================================
   Cards, Grillas y Componentes del Blog (Estilo Wagtail)
   ========================================================================== */
.blog-listing {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
  margin-bottom: 4rem;
}

@media (max-width: 900px) {
  .blog-listing {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Tarjeta Destacada de Ancho Completo */
.blog-post--featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 2.5rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 2.5rem;
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
}

@media (max-width: 850px) {
  .blog-post--featured {
    grid-template-columns: 1fr;
    padding: 1.75rem;
  }
}

.blog-post--featured:hover,
.blog-post--small:hover {
  border-color: #777;
  background-color: var(--color-surface-hover);
}

.blog-post--featured:hover .blog-post__title,
.blog-post--small:hover .blog-post__title {
  color: var(--color-sec-1);
}

/* Tarjeta pequeña en grilla */
.blog-post--small {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 2.25rem;
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
}

/* Metadatos */
.blog-post__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-meta);
  margin-bottom: 1rem;
}

.blog-post__category {
  font-weight: 800;
  color: var(--color-sec-1);
  letter-spacing: 0.02em;
}

.blog-post__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: rgba(255, 118, 75, 0.15);
  color: var(--color-accent-amber);
  border: 1px solid rgba(255, 118, 75, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}

.blog-post__title {
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.blog-post--featured .blog-post__title {
  font-size: 2.1rem;
}

.blog-post__listing-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
}

/* Componente de Autor estilo Wagtail */
.author {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border-subtle);
}

.author__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #2a2a2a;
  border: 1.5px solid var(--color-border);
  color: var(--color-sec-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.author__content {
  display: flex;
  flex-direction: column;
}

.author__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.1rem;
}

.author__meta {
  font-size: 0.8rem;
  color: var(--color-meta);
}

/* Mini Tags & Badges */
.badge-tech {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--tag-radius);
  background: #111111;
  color: var(--color-sec-1);
  border: 1px solid var(--color-border);
  text-decoration: none;
}

.badge-purple {
  color: var(--color-sec-2);
  border-color: rgba(139, 92, 246, 0.3);
}

/* ==========================================================================
   Tarjetas Generales (Servicios, Proceso, Métricas, Formularios)
   ========================================================================== */
.card, .glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 2.25rem;
  transition: var(--transition);
  position: relative;
  max-width: 100%;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .card, .glass-card {
    padding: 1.6rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .card, .glass-card {
    padding: 1.35rem 1rem;
  }
}

.card:hover, .glass-card:hover {
  border-color: #666666;
  background: var(--color-surface-hover);
}

/* Card CTA destacada (responsive) */
.card-cta {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  padding: 4.5rem 2.5rem;
  background: #121212;
  border: 1px solid var(--color-border);
  box-sizing: border-box;
  max-width: 100%;
}

@media (max-width: 768px) {
  .card-cta {
    padding: 2.5rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .card-cta {
    padding: 2rem 1rem;
  }
  .card-cta .btn {
    width: 100%;
    padding: 12px 14px !important;
  }
}

/* Grillas */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Grilla de Contacto Responsive */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2.5rem;
}

@media (max-width: 850px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}

.contact-form-card {
  padding: 2.75rem 2.25rem;
}

@media (max-width: 600px) {
  .contact-form-card {
    padding: 1.5rem 1rem;
  }
}

/* ==========================================================================
   Formularios (Estilo Wagtail Dark)
   ========================================================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.form-control,
input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: #111111;
  border: 1.5px solid var(--color-border);
  border-radius: var(--btn-radius);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-sec-1);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

/* ==========================================================================
   Footer (Estilo Wagtail Dark)
   ========================================================================== */
.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-border);
  padding: 4.5rem 0 2.5rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col h4,
.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-sec-1);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-subtle);
  color: var(--color-meta);
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1.25rem;
}

.social-links a {
  color: var(--color-meta);
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--color-sec-1);
}