/*
 * Prompt2Agent — one-pager comercial
 * Paleta base heredada de Prompt2Academy (src/styles/tokens.css).
 * Acento propio del one-pager: #D7F23F (candidato, no aplicado aún
 * al ecosistema Prompt2Academy). Geist/Geist Mono como sistema
 * tipográfico actual de Prompt2Academy (no final) — con fallback de
 * sistema porque esta pieza no carga fuentes externas todavía. La
 * pila queda estructurada para poder servir Geist localmente más
 * adelante sin cambiar la arquitectura de tokens.
 */

:root {
  --color-background: #0a0b0d;
  --color-surface: #131519;
  --color-surface-elevated: #1b1e23;
  --color-border: #262a30;
  --color-text-primary: #f1f2f4;
  --color-text-secondary: #9099a3;
  --color-locked: #4a4f57;
  --color-accent-primary: #d7f23f;
  --color-text-on-accent: #0a0b0d;

  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.25rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4.5rem;

  --duration-fast: 120ms;
  --duration-base: 200ms;
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

  --radius: 2px;
  --content-max-width: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  background-color: var(--color-background);
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

@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;
  }
}

::selection {
  background-color: var(--color-accent-primary);
  color: var(--color-text-on-accent);
}

:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

h1, h2, h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 var(--spacing-md);
  color: var(--color-text-primary);
}

.section-title-highlight {
  color: var(--color-accent-primary);
}

p {
  margin: 0 0 var(--spacing-md);
  color: var(--color-text-secondary);
}

a {
  color: inherit;
}

ul, ol, dl {
  margin: 0;
  padding: 0;
  list-style: none;
}

.content-width {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  background: var(--color-accent-primary);
  color: var(--color-text-on-accent);
  padding: var(--spacing-sm) var(--spacing-md);
}

.skip-link:focus {
  left: 20px;
  top: 20px;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled {
  background-color: rgba(10, 11, 13, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.brand-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.875rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  cursor: pointer;
  transition: opacity var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}

.btn:hover {
  opacity: 0.88;
}

.btn-primary {
  background-color: var(--color-accent-primary);
  color: var(--color-text-on-accent);
}

.btn-compact {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  flex-shrink: 0;
}

/* ---------- Hero ---------- */

.hero {
  padding: calc(60px + 4rem) 0 4rem;
  text-align: left;
}

.hero-title {
  font-size: clamp(2.25rem, 6vw, 4.25rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 23ch;
  margin-bottom: var(--spacing-lg);
  text-wrap: balance;
}

.hero-highlight {
  color: var(--color-accent-primary);
}

.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  max-width: 58ch;
  margin-bottom: var(--spacing-xl);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Separador en ::after y no en ::before: si la franja envuelve en
   pantallas estrechas, la línea termina en "/" en lugar de empezar
   con él. El margen izquierdo más el column-gap dejan el separador
   centrado entre ambos elementos. */
.hero-meta li:not(:last-child)::after {
  content: "/";
  margin-left: var(--spacing-md);
  color: var(--color-locked);
}

/* ---------- Zones ---------- */

.zone {
  padding: var(--spacing-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.zone-alt {
  background-color: var(--color-surface);
}

.block + .block {
  margin-top: var(--spacing-2xl);
}

/* .program-info no es un .block, pero su h2 convive en la misma fila
   que el de .founder-block: ambos deben tener el mismo tamaño. */
.block h2,
.program-info h2 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

.block h3 {
  font-size: 1.125rem;
}

/* ---------- Ancho de lectura ---------- */

.block > p,
.block > .check-list {
  max-width: 72ch;
}

.block > p,
.layers-closing {
  text-wrap: pretty;
}

/* ---------- Listas editoriales simples (sin numeración) ---------- */

.check-list {
  margin-top: var(--spacing-md);
}

.check-list li {
  padding: var(--spacing-md) 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.check-list li:first-child {
  border-top: none;
}

.check-list strong {
  color: var(--color-text-primary);
}

/* ---------- 7 niveles: recorrido metodológico ---------- */

.levels-block h2 {
  margin-bottom: var(--spacing-lg);
}

.levels-list {
  position: relative;
  display: flex;
  flex-direction: column;
  margin-left: 3px;
  padding-left: 1.75rem;
  border-left: 1px solid var(--color-accent-primary);
}

.level-item {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  padding: 0.85rem 0;
}

.level-item + .level-item {
  border-top: 1px solid var(--color-border);
}

.level-item::before {
  content: "";
  position: absolute;
  left: calc(-1.75rem - 3px);
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent-primary);
  transform: translateY(-50%);
}

.level-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  min-width: 2ch;
}

.level-name {
  font-weight: 600;
  color: var(--color-text-primary);
  /* Red de seguridad para el nombre más largo ("Automatización") en la
     columna más estrecha del timeline, justo en el breakpoint de 901px.
     Sin efecto visual cuando el texto cabe. */
  overflow-wrap: break-word;
}

@media (min-width: 901px) {
  .levels-list {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    position: relative;
  }

  .levels-list::before {
    content: "";
    position: absolute;
    left: 7.142857%;
    right: 7.142857%;
    top: 3px;
    height: 1px;
    background-color: var(--color-accent-primary);
  }

  .level-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
    padding: 0 0.5rem;
  }

  .level-item + .level-item {
    border-top: none;
  }

  .level-item::before {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    flex-shrink: 0;
  }
}

/* ---------- Esquema del agente ---------- */

/* Mobile: columna única en el orden del DOM — "Qué es un agente",
   esquema, "Qué te llevas". */
.diagram-split {
  display: grid;
  gap: var(--spacing-xl);
}

.diagram-figure {
  margin: 0;
}

.diagram-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 420px;
  margin-inline: auto;
}

/* Desktop: los dos bloques de texto se apilan en la columna izquierda
   y el esquema ocupa la derecha a lo alto de ambos, centrado respecto
   del conjunto. */
@media (min-width: 901px) {
  .diagram-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    grid-template-areas:
      "copy-a figure"
      "copy-b figure";
    column-gap: var(--spacing-3xl);
    row-gap: var(--spacing-lg);
    align-items: start;
  }

  .diagram-copy-a {
    grid-area: copy-a;
  }

  .diagram-copy-b {
    grid-area: copy-b;
  }

  .diagram-figure {
    grid-area: figure;
    align-self: center;
  }
}

/* ---------- Hasta dónde puede llegar tu caso ---------- */

.layers-list {
  display: flex;
  flex-direction: column;
  margin-top: var(--spacing-lg);
}

.layer-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
}

.layer-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.layer-num {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-accent-primary);
}

.layer-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-xs);
  color: var(--color-text-primary);
}

.layer-body p {
  margin: 0;
  color: var(--color-text-secondary);
}

.layers-closing {
  margin-top: var(--spacing-lg);
  color: var(--color-text-secondary);
  max-width: 72ch;
}

@media (min-width: 901px) {
  .layers-list {
    flex-direction: row;
    margin-top: var(--spacing-lg);
  }

  .layer-item {
    grid-template-columns: 1fr;
    flex: 1 1 0;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-2xl);
    border-top: none;
    align-content: start;
  }

  .layer-item:first-child {
    padding-left: 0;
  }

  .layer-item:last-child {
    padding-right: 0;
    border-bottom: none;
  }

  .layer-item + .layer-item {
    border-left: 1px solid var(--color-border);
  }
}

/* ---------- Fact sheet ---------- */

.fact-sheet {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.fact-row {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

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

.fact-row dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.fact-row dt.fact-label-highlight {
  color: var(--color-accent-primary);
}

.fact-row dd {
  margin: 0;
  text-align: right;
  color: var(--color-text-primary);
  font-weight: 500;
}

.founder-block {
  max-width: 70ch;
  margin-top: var(--spacing-xl);
}

@media (min-width: 901px) {
  .program-columns {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
  }

  .founder-block {
    margin-top: 0;
    max-width: none;
    padding-left: var(--spacing-lg);
    border-left: 1px solid var(--color-border);
  }
}

/* ---------- CTA final ---------- */

.cta-final {
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.cta-final-text {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: var(--color-text-primary);
  max-width: 40ch;
  margin: 0 auto var(--spacing-xl);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .content-width,
  .header-inner {
    padding: 0 20px;
  }

  .hero {
    padding: calc(60px + 2.5rem) 0 2.5rem;
  }

  .hero-title {
    max-width: 100%;
  }

  .zone,
  .cta-final {
    padding: var(--spacing-2xl) 0;
  }

  .brand-eyebrow {
    display: none;
  }

  .layer-item {
    grid-template-columns: 2.25rem 1fr;
  }

  .fact-sheet {
    grid-template-columns: 1fr;
  }

  .fact-row:nth-child(odd) {
    border-right: none;
  }

  .fact-row {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .fact-row dd {
    text-align: left;
  }

  .btn {
    width: 100%;
  }

  .btn-compact {
    width: auto;
  }
}