/* ==========================================================================
   CAUCE NORTE — SISTEMA DE DISEÑO GLOBAL
   ==========================================================================
   Filosofía: la tecnología simplifica, no complica. El diseño sigue el
   mismo criterio: cada token existe porque resuelve algo, no por completar
   una lista de variables.
   ========================================================================== */

/* Fuentes autoalojadas en /assets/fonts/ — sin dependencia de Google Fonts.
   Pesos/estilos: exactamente los usados en el proyecto (ver auditoría):
   Fraunces 400/500/600 normal + 400/500 italic (usada en .plan__question,
   .process-step__num, .hero__aside-note__word, .service-detail__label);
   Public Sans 400/500/600 (el 700 del @import previo no se usa en ningún
   selector, se omite); JetBrains Mono 400/500 (.price-figure usa 500).
   Subset "latin" (Latin-1 Supplement) cubre los acentos del español
   (á é í ó ú ñ ü ¿ ¡). */

@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Fraunces';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin-400-italic.woff2') format('woff2');
}
@font-face {
  font-family: 'Fraunces';
  font-style: italic;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/fraunces-latin-500-italic.woff2') format('woff2');
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/public-sans-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/public-sans-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/public-sans-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-500-normal.woff2') format('woff2');
}

:root {
  /* ---- Color: base tierra oscura + acento cuero/latón único ---- */
  --color-bg:            #15140F;
  --color-bg-raised:     #1B1A13;
  --color-bg-inset:      #100F0B;
  --color-text:          #EDEAE0;
  --color-text-muted:    #A8A290;
  --color-text-faint:    #8A8474;
  --color-accent:        #B08D5F;
  --color-accent-bright: #C9A876;
  --color-accent-dim:    #6B5738;
  --color-border:        #2A2820;
  --color-border-strong: #3A3729;
  --color-focus:         #C9A876;
  --color-error:         #C4685A;
  --color-success:       #7A9B7E;

  /* ---- Tipografía ---- */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Public Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* Escala tipográfica — proporción ~1.333, ajustada a mano en extremos */
  --fs-2xs:  0.75rem;   /* 12px — metadatos, labels */
  --fs-xs:   0.875rem;  /* 14px — captions, precios secundarios */
  --fs-sm:   1rem;      /* 16px — cuerpo pequeño */
  --fs-base: 1.125rem;  /* 18px — cuerpo estándar */
  --fs-md:   1.375rem;  /* 22px — cuerpo destacado / lead */
  --fs-lg:   1.75rem;   /* 28px — h3 */
  --fs-xl:   2.5rem;    /* 40px — h2 */
  --fs-2xl:  3.5rem;    /* 56px — h1 sección */
  --fs-3xl:  4.75rem;   /* 76px — hero desktop */
  --fs-4xl:  6.25rem;   /* 100px — hero grande */

  /* ---- Espaciado — escala base 4px ---- */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.5rem;
  --sp-6:  2rem;
  --sp-7:  3rem;
  --sp-8:  4rem;
  --sp-9:  6rem;
  --sp-10: 8rem;
  --sp-11: 11rem;

  /* ---- Grid / contenedor ---- */
  --container-max: 1400px;
  --container-pad: clamp(1.25rem, 4vw, 4rem);
  --grid-cols: 12;
  --grid-gap: clamp(1rem, 2vw, 1.75rem);

  /* ---- Bordes / radio — deliberadamente casi recto, no "pill" ---- */
  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 10px;

  /* ---- Sombra — una sola, discreta, usada con mucha moderación ---- */
  --shadow-soft: 0 20px 60px -20px rgba(0, 0, 0, 0.55);
  --shadow-tight: 0 4px 16px -6px rgba(0, 0, 0, 0.4);

  /* ---- Transición ---- */
  --ease-standard: cubic-bezier(0.25, 0.1, 0.25, 1);
  --dur-fast: 150ms;
  --dur-base: 280ms;
  --dur-slow: 520ms;

  /* ---- Ancho de línea de lectura ---- */
  --measure: 62ch;
  --measure-tight: 46ch;
}

/* ==========================================================================
   RESET
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: hidden; /* red de seguridad — las causas reales de overflow
    detectadas (skip-link con left:-999px, .cauce-line con overflow:visible)
    ya están corregidas en sus reglas correspondientes; esto cubre cualquier
    caso residual sin ocultar futuros bugs de layout en el propio elemento */
}

@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;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

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

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 500; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

/* ---- Foco visible — obligatorio, nunca se elimina ---- */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
:focus:not(:focus-visible) { outline: none; }

/* ==========================================================================
   TIPOGRAFÍA — CLASES DE ROL
   ========================================================================== */

.display-1 {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw + 1rem, 6.25rem);
  font-weight: 400;
  font-optical-sizing: auto;
  line-height: 1.04;
  letter-spacing: -0.015em;
}

@media (max-width: 640px) {
  .display-1 { line-height: 1.08; letter-spacing: -0.01em; }
}

.display-2 {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.015em;
}

.display-3 {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.display-4 {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  line-height: 1.2;
}

.lead {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: var(--measure);
}

.body-text {
  font-size: var(--fs-base);
  color: var(--color-text);
  max-width: var(--measure);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.eyebrow::before {
  content: '';
  width: 14px;
  height: 1px;
  background: var(--color-accent);
  display: inline-block;
}

.caption {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

.price-figure {
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), 1fr);
  gap: var(--grid-gap);
}

/* Fix estructural de overflow horizontal: por defecto, los hijos de grid
   y flex tienen min-width:auto, que usa el ancho mínimo de su contenido
   (texto sin partir, elementos con white-space:nowrap, etc.) para
   dimensionar la pista/columna — si ese contenido no cabe, la pista se
   expande y desborda el documento aunque el layout "parezca" correcto.
   Se neutraliza en los contenedores grid/flex reales del proyecto para
   que sus hijos puedan encogerse por debajo de su contenido cuando el
   viewport es más estrecho. No oculta overflow: elimina la causa. */
.hero__grid,
.hero__intro,
.problem-answer__grid,
.how-preview__grid,
.service-detail__grid,
.service-detail__cols,
.plans,
.footer-grid,
.service-row,
.contact-grid,
.field-row,
.process-step {
  min-width: 0;
}
.hero__grid > *,
.hero__intro > *,
.problem-answer__grid > *,
.how-preview__grid > *,
.service-detail__grid > *,
.service-detail__cols > *,
.plans > *,
.footer-grid > *,
.service-row > *,
.contact-grid > *,
.field-row > *,
.process-step > * {
  min-width: 0;
}

.section {
  padding-block: var(--sp-9);
}

.section--tight { padding-block: var(--sp-7); }
.section--loose { padding-block: var(--sp-10); }

@media (max-width: 860px) {
  .section { padding-block: var(--sp-7); }
  .section--loose { padding-block: var(--sp-8); }
}

@media (max-width: 640px) {
  .section { padding-block: var(--sp-6); }
  .section--loose { padding-block: var(--sp-7); }
}

/* ---- El "cauce": línea divisoria firma de marca ---- */
.cauce-line {
  width: 100%;
  height: 40px;
  overflow: hidden;
}

.cauce-line svg { width: 100%; height: 100%; display: block; }

.cauce-line path {
  fill: none;
  stroke: var(--color-border-strong);
  stroke-width: 1;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* ==========================================================================
   BOTONES
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: 0.85em 1.6em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
  min-height: 44px;
  cursor: pointer;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg-inset);
}
.btn--primary:hover { background: var(--color-accent-bright); }

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-bright);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding-inline: 0;
  min-height: auto;
  border-bottom: 1px solid var(--color-border-strong);
  border-radius: 0;
}
.btn--ghost:hover { color: var(--color-accent-bright); border-color: var(--color-accent); }

.btn--sm { font-size: var(--fs-xs); padding: 0.6em 1.2em; min-height: 38px; }

/* ==========================================================================
   FORMULARIOS
   ========================================================================== */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
}

@media (max-width: 640px) {
  .field { margin-bottom: var(--sp-4); }
}

.field label {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.field .optional {
  display: block;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.85em;
  color: var(--color-text-faint);
  margin-top: 0.15em;
}

.field input,
.field textarea,
.field select {
  background: var(--color-bg-inset);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 0.85em 1em;
  font-size: var(--fs-sm);
  color: var(--color-text);
  transition: border-color var(--dur-fast) var(--ease-standard);
  width: 100%;
}

.field input::placeholder,
.field textarea::placeholder { color: var(--color-text-faint); }

.field input:hover,
.field textarea:hover,
.field select:hover { border-color: var(--color-text-faint); }

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--color-accent);
  outline: 2px solid var(--color-focus);
  outline-offset: 1px;
}

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

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A8A290' stroke-width='1.4' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1em center;
  padding-right: 2.6em;
}

.field--error input,
.field--error textarea { border-color: var(--color-error); }

.field-error-msg {
  font-size: var(--fs-2xs);
  color: var(--color-error);
  display: none;
}
.field--error .field-error-msg { display: block; }

.field-hint {
  font-size: var(--fs-2xs);
  color: var(--color-text-faint);
}

/* ==========================================================================
   COMPONENTES COMPARTIDOS
   ========================================================================== */

/* ---- Navegación ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(21, 20, 15, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--dur-base) var(--ease-standard);
}

@media (max-width: 960px) {
  .site-header[data-hidden="true"] { transform: translateY(-100%); }
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--sp-4);
  max-width: 1240px;
  margin-inline: auto;
}

.logo {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  letter-spacing: -0.01em;
  font-weight: 500;
}
.logo span { color: var(--color-accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-7);
}

.nav-links li {
  display: flex;
  flex-shrink: 0;
}

.nav-links a {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  position: relative;
  padding-block: var(--sp-1);
  transition: color var(--dur-fast) var(--ease-standard);
}

.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--color-text); }

.nav-links a[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--color-accent);
}

.nav-cta { display: flex; align-items: center; gap: var(--sp-5); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after {
  content: '';
  display: block;
  width: 20px; height: 1.5px;
  background: var(--color-text);
  position: relative;
  transition: transform var(--dur-base) var(--ease-standard), opacity var(--dur-base);
}
.nav-toggle::before { transform: translateY(-6px); }
.nav-toggle::after { transform: translateY(5px); }

.nav-toggle[aria-expanded="true"] span { opacity: 0; }
.nav-toggle[aria-expanded="true"]::before { transform: translateY(0) rotate(45deg); }
.nav-toggle[aria-expanded="true"]::after { transform: translateY(-1.5px) rotate(-45deg); }

@media (max-width: 960px) {
  .nav-links {
    position: fixed;
    inset: 65px 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-5);
    padding: var(--sp-7) var(--container-pad) var(--sp-8);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    z-index: 150;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    max-height: 100dvh;
    max-height: calc(100dvh - 65px);
    transition: opacity var(--dur-base) var(--ease-standard), transform var(--dur-base) var(--ease-standard), visibility var(--dur-base);
  }
  .nav-links[data-open="true"] {
    opacity: 1; visibility: visible; transform: translateY(0);
  }
  /* Si el header tuviera un transform activo (auto-hide por scroll) mientras
     el menú está abierto, se convertiría en el containing block de
     .nav-links (fixed) y el menú quedaría recortado dentro de su caja.
     Esta regla es una segunda red de seguridad; la causa real ya se
     corrige en js/navigation.js forzando data-hidden="false" al abrir.
     backdrop-filter también crea containing block para position:fixed,
     igual que transform, y en .site-header está SIEMPRE activo (no solo
     al ocultarse) — por eso .nav-links quedaba recortado dentro de la
     caja del header (~65px) incluso con data-hidden="false". Se anula
     solo mientras el menú está abierto. */
  .site-header:has(.nav-links[data-open="true"]) {
    transform: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a {
    font-size: var(--fs-lg);
    font-family: var(--font-display);
    display: block;
    width: 100%;
    padding-block: var(--sp-2);
  }
  .nav-cta .btn--secondary { display: none; }
  .nav-toggle { display: flex; }
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--sp-8) var(--sp-6);
  background: var(--color-bg-inset);
}

@media (max-width: 640px) {
  .site-footer { padding-block: var(--sp-7) var(--sp-5); }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--sp-7);
  padding-bottom: var(--sp-6);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  margin-bottom: var(--sp-4);
}

.footer-col a, .footer-col p {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--sp-3);
  transition: color var(--dur-fast);
}
.footer-col a:hover { color: var(--color-accent-bright); }

@media (max-width: 560px) {
  .footer-col a, .footer-col p { margin-bottom: var(--sp-2); }
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-6);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.footer-bottom, .footer-bottom a { font-size: var(--fs-2xs); color: var(--color-text-faint); }
.footer-legal-links { display: flex; gap: var(--sp-5); }

@media (max-width: 860px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-5); }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .footer-legal-links { justify-content: center; }
}

/* ---- WhatsApp flotante — discreto, integrado en el sistema ---- */
.wa-float {
  position: fixed;
  right: var(--sp-6);
  bottom: var(--sp-6);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
  padding: 0.7em 1.1em 0.7em 0.7em;
  border-radius: 999px;
  box-shadow: var(--shadow-tight);
  transition: border-color var(--dur-fast), transform var(--dur-fast);
  font-size: var(--fs-xs);
}
.wa-float:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.wa-float svg { width: 20px; height: 20px; color: var(--color-accent-bright); flex-shrink: 0; }
.wa-float span { color: var(--color-text-muted); }

@media (max-width: 560px) {
  .wa-float { right: var(--sp-4); bottom: var(--sp-4); }
  .wa-float span { display: none; }
  .wa-float { padding: 0.8em; }
}

/* ---- Skip link — accesibilidad ----
   Antes usaba `left: -999px`, que aunque visualmente oculto, ampliaba el
   área de scroll del documento y causaba overflow horizontal en móvil.
   Se sustituye por la técnica de recorte visual (clip-path), que no
   desplaza el elemento fuera del viewport real. */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  background: var(--color-accent);
  color: var(--color-bg-inset);
  padding: var(--sp-3) var(--sp-5);
  z-index: 200;
  font-size: var(--fs-sm);
  font-weight: 600;
}
.skip-link:focus {
  width: auto;
  height: auto;
  overflow: visible;
  clip-path: none;
  left: var(--sp-4);
  top: var(--sp-4);
}

/* ---- Placeholder de contenido pendiente — visible solo en dev, marcado ---- */
.pending {
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ---- Utilidades ---- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.text-muted { color: var(--color-text-muted); }
.text-faint { color: var(--color-text-faint); }
.text-accent { color: var(--color-accent-bright); }
.mt-0 { margin-top: 0 !important; }
.nowrap { white-space: nowrap; }