/* =========================================================================
   Portafolio de Joaquín José Cruz Lorenzo — joaquinjcl.dev
   Estilo: minimalista y suave, inspirado en Apple. Superficies lisas,
   sombras muy ligeras y cristal solo en la navegación.
   Todos los colores están en variables (tokens) al principio del archivo.
   ========================================================================= */

/* ---------- 1. Tokens: tema claro (por defecto) ---------- */
:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --ink-soft: #424245;
  --ink-faint: #6e6e73;
  --accent: #0066cc;          /* enlaces */
  --button: #0071e3;          /* botón principal */
  --button-ink: #ffffff;
  --focus: #0071e3;
  --live: #1a7f37;
  --line: rgba(0, 0, 0, 0.08);
  --chip: #f5f5f7;
  --card-border: transparent;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 10px 30px -12px rgba(0, 0, 0, 0.08);

  /* Cristal de la navegación y lente que marca la sección activa */
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.86);
  --glass-border: rgba(0, 0, 0, 0.06);
  --lens: rgba(0, 0, 0, 0.06);
  --lens-edge: rgba(255, 255, 255, 0.9);

  /* Iconos del botón de tema (1 = visible, 0 = oculto) */
  --show-moon: 1;
  --show-sun: 0;

  color-scheme: light;
}

/* ---------- 2. Tokens: tema oscuro ----------
   El bloque aparece DOS veces: una para quien tiene el sistema en oscuro
   y otra para quien lo elige con el botón. Si cambias un color, cámbialo en ambos. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --surface: #1c1c1e;
    --ink: #f5f5f7;
    --ink-soft: #d2d2d7;
    --ink-faint: #a1a1a6;
    --accent: #2997ff;
    --focus: #2997ff;
    --live: #30d158;
    --line: rgba(255, 255, 255, 0.1);
    --chip: #2c2c2e;
    --card-border: rgba(255, 255, 255, 0.06);
    --shadow: none;
    --glass: rgba(28, 28, 30, 0.72);
  --glass-strong: rgba(28, 28, 30, 0.88);
    --glass-border: rgba(255, 255, 255, 0.08);
    --lens: rgba(255, 255, 255, 0.12);
    --lens-edge: rgba(255, 255, 255, 0.18);
    --show-moon: 0;
    --show-sun: 1;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #000000;
  --surface: #1c1c1e;
  --ink: #f5f5f7;
  --ink-soft: #d2d2d7;
  --ink-faint: #a1a1a6;
  --accent: #2997ff;
  --focus: #2997ff;
  --live: #30d158;
  --line: rgba(255, 255, 255, 0.1);
  --chip: #2c2c2e;
  --card-border: rgba(255, 255, 255, 0.06);
  --shadow: none;
  --glass: rgba(28, 28, 30, 0.72);
  --glass-strong: rgba(28, 28, 30, 0.88);
  --glass-border: rgba(255, 255, 255, 0.08);
  --lens: rgba(255, 255, 255, 0.12);
  --lens-edge: rgba(255, 255, 255, 0.18);
  --show-moon: 0;
  --show-sun: 1;
  color-scheme: dark;
}

/* ---------- 3. Tipografía y base ---------- */

/* Libre Baskerville (licencia libre OFL), servida desde el propio dominio.
   Ver assets/fonts/libre-baskerville-OFL.txt */
@font-face {
  font-family: "Libre Baskerville";
  src: url("../assets/fonts/libre-baskerville.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Libre Baskerville";
  src: url("../assets/fonts/libre-baskerville-italic.woff2") format("woff2");
  font-weight: 400 700;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* Una sola familia para toda la página */
  --font: "Libre Baskerville", "Baskerville", Georgia, "Times New Roman", serif;
  --font-display: var(--font);
  /* Curvas de animación (Emil Kowalski) */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-ios: cubic-bezier(0.32, 0.72, 0, 1);
  --radius: 22px;
  --gutter: 16px;
  --max: 1080px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* Hueco para la barra de navegación inferior en móvil */
  padding-bottom: calc(96px + env(safe-area-inset-bottom));
}

h1, h2, h3, h4 { margin: 0; line-height: 1.15; }
h1, h2, h3, .hero-tagline { text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
svg { width: 1.2em; height: 1.2em; flex-shrink: 0; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* Titulares grandes en peso normal: en una Baskerville se ven más elegantes que en negrita */
h1, h2, .project h3, .entry-title, .email, .brand-mark {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 10px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--button);
  color: var(--button-ink);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }

/* ---------- 4. Tarjetas ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- 5. Cabecera y navegación ---------- */
.site-header {
  position: fixed;
  top: 12px;
  left: var(--gutter);
  right: var(--gutter);
  z-index: 50;
  max-width: var(--max);
  margin: 0 auto;
  height: 56px;
  padding: 0 8px 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-radius: 999px;
}

/* El cristal va en un pseudo-elemento para que la barra inferior (position: fixed)
   no quede atrapada dentro de la cabecera en móvil */
.site-header::before,
.site-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 30px -12px rgba(0, 0, 0, 0.12);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header::before, .site-nav::before { background: var(--surface); }
}

/* Al bajar, la cabecera se compacta un poco y su cristal se vuelve más opaco */
.site-header::before { transition: box-shadow 300ms ease, background-color 300ms ease; }
.site-header.is-compact::before {
  background: var(--glass-strong, var(--glass));
  box-shadow: 0 10px 34px -10px rgba(0, 0, 0, 0.18);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: 999px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--bg);
  background: var(--ink);
  font-size: 1.25rem;
  line-height: 1;
}

.site-nav {
  position: fixed;
  left: 8px;
  right: 8px;
  bottom: calc(10px + env(safe-area-inset-bottom));
  border-radius: 28px;
}

.site-nav ul {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding: 6px;
}

.site-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 0;
  border-radius: 22px;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: var(--ink-faint);
  text-decoration: none;
  transition: color 200ms ease, transform 160ms var(--ease-out);
}
.site-nav a svg { width: 22px; height: 22px; }
.site-nav a[aria-current="true"] { color: var(--ink); }
.site-nav a:active { transform: scale(0.95); }

/* La lente: una gota de cristal que se desliza y se estira hasta la sección activa */
.nav-lens {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  border-radius: 22px;
  background: var(--lens);
  box-shadow:
    inset 0 1px 0 var(--lens-edge),
    inset 0 -1px 0 rgba(0, 0, 0, 0.04),
    0 2px 8px -2px rgba(0, 0, 0, 0.12);
  -webkit-backdrop-filter: blur(6px) saturate(200%) brightness(1.05);
  backdrop-filter: blur(6px) saturate(200%) brightness(1.05);
  opacity: 0;
  transition: opacity 250ms ease;
  pointer-events: none;
}
.nav-lens.is-visible { opacity: 1; }

.controls { display: flex; gap: 6px; }

.control {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font: 700 0.75rem/1 var(--font);
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background-color 200ms ease;
}
.control:active { transform: scale(0.92); }
.control svg { grid-area: 1 / 1; width: 20px; height: 20px; }

@media (hover: hover) and (pointer: fine) {
  .control:hover { background: var(--lens); }
}

/* Los dos iconos del tema están superpuestos y se intercambian con un fundido */
.icon-moon,
.icon-sun {
  transition: opacity 200ms var(--ease-out), transform 300ms var(--ease-out), filter 200ms var(--ease-out);
}
.icon-moon {
  opacity: var(--show-moon);
  transform: scale(calc(0.6 + 0.4 * var(--show-moon))) rotate(calc((1 - var(--show-moon)) * -60deg));
  filter: blur(calc((1 - var(--show-moon)) * 2px));
}
.icon-sun {
  opacity: var(--show-sun);
  transform: scale(calc(0.6 + 0.4 * var(--show-sun))) rotate(calc((1 - var(--show-sun)) * 60deg));
  filter: blur(calc((1 - var(--show-sun)) * 2px));
}

/* Botón de copiar: el icono pasa a ser un check durante un momento */
.icon-copy,
.icon-check {
  transition: opacity 150ms var(--ease-out), transform 200ms var(--ease-out);
}
.icon-check { opacity: 0; transform: scale(0.7); color: var(--live); }
.control[data-copied] .icon-copy { opacity: 0; transform: scale(0.7); }
.control[data-copied] .icon-check { opacity: 1; transform: none; }

@media (min-width: 820px) {
  body { padding-bottom: 0; }

  /* Solo en escritorio: en móvil la cabecera contiene la barra inferior fija
     y un transform la dejaría atrapada dentro */
  .site-header { transition: transform 300ms var(--ease-out); }
  .site-header.is-compact { transform: translateY(-4px) scale(0.97); }

  .site-nav {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    border-radius: 999px;
  }
  .site-nav::before { display: none; }
  .site-nav ul { display: flex; gap: 2px; padding: 0; }
  .site-nav a {
    flex-direction: row;
    padding: 8px 15px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--ink-soft);
  }
  .site-nav a svg { display: none; }
  .nav-lens { border-radius: 999px; }
}

@media (max-width: 380px) {
  .brand-name { display: none; }
}

/* ---------- 6. Botones y etiquetas ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 400;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: transform 160ms var(--ease-out), background-color 200ms ease, color 200ms ease;
}
.btn:active { transform: scale(0.97); }

.btn-primary { color: var(--button-ink); background: var(--button); }
.btn-secondary { color: var(--ink); background: var(--surface); border: 1px solid var(--line); }
.btn-icon { width: 46px; padding: 0; }

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover { background: #0077ed; }
  .btn-secondary:hover { background: var(--chip); }
}

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags li {
  padding: 3px 11px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--chip);
}
.tags-lg li { padding: 6px 14px; font-size: 0.9375rem; }

/* ---------- 7. Secciones ---------- */
main > section {
  width: 100%;
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(48px, 7vw, 88px); }

.section-head { margin-bottom: clamp(28px, 4vw, 48px); }

.section h2 { font-size: clamp(2.2rem, 6vw, 3.5rem); }

.section-intro {
  margin-top: 12px;
  max-width: 56ch;
  font-size: 1.125rem;
  color: var(--ink-faint);
}

/* ---------- 8. Inicio ---------- */
.hero {
  min-height: min(100svh, 860px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 96px;
  padding-bottom: 48px;
  text-align: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 760px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 12px;
  margin-bottom: 28px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
}

.status-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--live);
}
/* Onda que se expande: solo transform y opacity */
.status-dot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--live);
  animation: pulse 2.4s var(--ease-out) infinite;
}

@keyframes pulse {
  from { transform: scale(1); opacity: 0.5; }
  70%, to { transform: scale(3); opacity: 0; }
}

.eyebrow {
  font-style: italic;
  font-size: clamp(1.1rem, 2.6vw, 1.35rem);
  color: var(--ink-faint);
}

.hero-title {
  margin: 6px 0 20px;
  font-size: clamp(2.4rem, 8.5vw, 5.25rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-tagline {
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero-lead {
  margin-top: 12px;
  max-width: 44ch;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--ink-faint);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
}

.hero-location {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 28px;
  font-size: 0.9375rem;
  color: var(--ink-faint);
}

/* Entrada del inicio: un único momento orquestado al cargar la página */
.intro {
  animation: intro 700ms var(--ease-out) both;
  animation-delay: calc(60ms + var(--i, 0) * 60ms);
}

@keyframes intro {
  from { opacity: 0; transform: translateY(10px); filter: blur(4px); }
}

/* Nombre escrito a máquina: las letras aparecen al pulsar cada tecla (js/main.js) */
.hero-title { position: relative; }
.typing .char { opacity: 0; }
.typing .char.is-typed { opacity: 1; }

/* Un único cursor, del color del texto, que avanza con cada letra */
.caret {
  position: absolute;
  top: 0;
  left: 0;
  width: 0.05em;
  background: currentColor;
  pointer-events: none;
}
.caret.is-done { animation: caret-blink 1.6s steps(1) forwards; }

@keyframes caret-blink {
  0%, 25%, 50% { opacity: 1; }
  12.5%, 37.5%, 62.5%, 100% { opacity: 0; }
}


/* ---------- 9. Sobre mí ---------- */
.about { display: grid; gap: 14px; }

.about-text {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 4vw, 40px);
  font-size: clamp(1.05rem, 1.8vw, 1.175rem);
  color: var(--ink-soft);
}
.about-text strong { color: var(--ink); font-weight: 600; }

.facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  border-radius: 18px;
}
.fact-label { font-size: 0.875rem; color: var(--ink-faint); }
.fact-value { font-weight: 600; line-height: 1.35; }

@media (min-width: 900px) {
  .about { grid-template-columns: 1.6fr 1fr; align-items: start; }
  .facts { grid-template-columns: 1fr; }
}

/* ---------- 10. Proyectos ---------- */
.projects { display: grid; gap: 14px; }

.project {
  display: flex;
  flex-direction: column;
  padding: 26px 26px 24px;
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 12px;
}

.project-kind {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--ink-faint);
}

.badge-live {
  padding: 1px 10px;
  border-radius: 999px;
  font-weight: 500;
  color: var(--live);
  background: var(--chip);
}

.project h3 { font-size: 1.5rem; }
.project-body > p:not(.project-kind):not(.project-meta) { color: var(--ink-soft); font-size: 1rem; }
.project-meta { font-size: 0.875rem; color: var(--ink-faint); }

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
  padding-top: 6px;
  align-self: flex-start;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  border-radius: 8px;
}
.project-link svg { transition: transform 200ms var(--ease-out); }
.project-link:hover { text-decoration: underline; text-underline-offset: 4px; }

@media (hover: hover) and (pointer: fine) {
  .project-link:hover svg { transform: translate(2px, -2px); }
}

@media (min-width: 720px) {
  .projects { grid-template-columns: repeat(2, 1fr); }
  .project-featured { grid-column: span 2; padding: clamp(28px, 4vw, 44px); }
  .project-featured h3 { font-size: clamp(1.75rem, 3.5vw, 2.4rem); }
  .project-featured .project-body > p:not(.project-kind):not(.project-meta) { font-size: 1.125rem; max-width: 62ch; }
  .project:last-child { grid-column: span 2; }
}

/* Escritorio: el TFG ocupa toda la fila, luego tres tarjetas y las dos últimas a media fila */
/* Ilustración del TFG (js/tfg-art.js) */
.tfg-figure { margin: 8px 0 0; }
.tfg-svg { display: block; width: 100%; max-width: 420px; height: auto; margin: 0 auto; }
.tfg-figure figcaption {
  margin-top: 8px;
  text-align: center;
  font-size: 0.8125rem;
  font-style: italic;
  color: var(--ink-faint);
}
.gum circle { fill: var(--line); }
.tooth circle {
  fill: var(--ink-faint);
  opacity: 0.35;
  transition: fill 500ms ease, opacity 500ms ease;
  transition-delay: var(--d);
}
.tfg-svg.is-labeled .tooth circle { fill: var(--tooth); opacity: 0.95; }
.fdi {
  font: 400 8px var(--font);
  fill: var(--ink-faint);
  text-anchor: middle;
  dominant-baseline: central;
  opacity: 0;
  transition: opacity 400ms ease;
  transition-delay: calc(var(--d) + 200ms);
}
.tfg-svg.is-labeled .fdi { opacity: 1; }
.tfg-svg.is-instant .tooth circle,
.tfg-svg.is-instant .fdi { transition: none; }

@media (min-width: 900px) {
  .project-featured { display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; align-items: center; }
  .tfg-figure { margin: 0; }
}

@media (min-width: 1040px) {
  .projects { grid-template-columns: repeat(6, 1fr); }
  .project { grid-column: span 2; }
  .project-featured { grid-column: span 6; }
  .project:nth-last-child(-n + 2) { grid-column: span 3; }
}

.more-title {
  margin: clamp(40px, 6vw, 64px) 0 16px;
  font-size: 1.35rem;
  font-weight: 600;
}

.more { padding: 4px clamp(20px, 3vw, 28px); }

.more-item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
}
.more-item + .more-item { border-top: 1px solid var(--line); }

.more-name { font-weight: 600; }
.more-name a { text-decoration: none; border-radius: 6px; }
.more-name a::after { content: " ↗"; color: var(--accent); }
.more-name a:hover { text-decoration: underline; text-underline-offset: 4px; }
.more-desc { font-size: 0.9375rem; color: var(--ink-soft); }
.more-tag { font-size: 0.875rem; color: var(--ink-faint); }

@media (min-width: 720px) {
  .more-item { grid-template-columns: 1fr auto; gap: 24px; align-items: baseline; }
}

.github-cta { margin-top: 28px; text-align: center; }

/* ---------- 11. Trayectoria ---------- */
.journey { display: grid; gap: 8px; }

.journey-col { display: grid; gap: 14px; align-content: start; }

.col-title {
  margin-top: 16px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-faint);
}

.entry {
  display: grid;
  gap: 6px;
  padding: 24px 26px;
}

.entry-date {
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
}
.entry-title { font-size: 1.35rem; }
.entry-place { font-weight: 500; color: var(--ink-soft); }
.entry-text { color: var(--ink-soft); font-size: 0.975rem; }

.entry-list {
  display: grid;
  gap: 8px;
  margin: 8px 0 10px;
  font-size: 0.975rem;
  color: var(--ink-soft);
}
.entry-list li { position: relative; padding-left: 16px; }
.entry-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink-faint);
}

@media (min-width: 900px) {
  .journey { grid-template-columns: 1.25fr 1fr; gap: 24px; }
}

/* Línea de tiempo: una línea fina a la izquierda de cada columna y un punto por entrada.
   Sin JavaScript (o con movimiento reducido) se ve completa y estática. */
.journey-col { position: relative; padding-left: 28px; }
.journey-col::before,
.journey-col::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background: var(--line);
}
.journey-col::after {
  background: var(--ink-faint);
  transform-origin: top;
  transform: scaleY(1);
}
.has-timeline .journey-col::after { transform: scaleY(var(--progress, 0)); }

.entry { position: relative; }
.entry::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 30px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-faint);
  border: 1px solid var(--ink-faint);
  transition: background-color 300ms ease, transform 300ms var(--ease-out);
}
.has-timeline .entry::before { background: var(--bg); transform: scale(0.8); }
.has-timeline .entry.is-reached::before { background: var(--ink-faint); transform: none; }

/* ---------- 12. Habilidades ---------- */
.skills { display: grid; gap: 14px; }

.skill-group { padding: 24px 26px; }
.skill-group h3,
.languages h3 {
  margin-bottom: 14px;
  font-size: 1.05rem;
  font-weight: 600;
}

@media (min-width: 720px) {
  .skills { grid-template-columns: repeat(2, 1fr); }
}

.languages { margin-top: 14px; padding: 24px 26px; }
.languages ul { display: grid; gap: 10px; }
.languages li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  font-weight: 500;
}
.languages li + li { padding-top: 10px; border-top: 1px solid var(--line); }
.level { color: var(--ink-faint); }

@media (min-width: 720px) {
  .languages { display: flex; align-items: center; gap: 32px; }
  .languages h3 { margin: 0; }
  .languages ul { display: flex; flex: 1; gap: 0; }
  .languages li { flex: 1; justify-content: center; gap: 10px; padding: 0 16px; }
  .languages li + li { padding-top: 0; border-top: 0; border-left: 1px solid var(--line); }
}

/* ---------- 13. Contacto ---------- */
.contact {
  padding: clamp(36px, 7vw, 80px) clamp(20px, 5vw, 64px);
  text-align: center;
}

.contact h2 { margin-bottom: 14px; }

.contact-lead {
  max-width: 48ch;
  margin: 0 auto;
  color: var(--ink-faint);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.email-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 28px 0 32px;
}

.email {
  font-size: clamp(1.35rem, 5vw, 2.4rem);
  color: var(--accent);
  text-decoration: none;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  overflow-wrap: anywhere;
  border-radius: 8px;
}
.email:hover { text-decoration-line: underline; }

.copy-feedback {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--live);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out);
}
.copy-feedback.is-shown { opacity: 1; transform: none; }

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

/* ---------- 14. Pie ---------- */
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px var(--gutter) 40px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--ink-faint);
}
.footer-note { margin-top: 4px; }

/* ---------- Laterales: autómata y red de neuronas (js/rails.js) ----------
   Solo en pantallas anchas, centrados en el margen libre a cada lado. */
.rail {
  position: fixed;
  top: 50%;
  z-index: 0;
  transform: translate(-50%, -50%);
  pointer-events: none;
  --rail: rgba(0, 0, 0, 0.16);
  --rail-on: var(--ink-soft);
}
.rail-left { left: calc((100vw - var(--max)) / 4); }
.rail-right { left: calc(100vw - (100vw - var(--max)) / 4); }
.rail svg { display: block; overflow: visible; height: auto; }
.rail .automaton { width: 80px; }
.rail .network { width: 120px; }

:root[data-theme="dark"] .rail { --rail: rgba(255, 255, 255, 0.18); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .rail { --rail: rgba(255, 255, 255, 0.18); }
}

/* Autómata */
.edge { stroke: var(--rail); stroke-width: 1; }
.arrow-head { fill: var(--rail); }
.state-ring {
  fill: var(--bg);
  stroke: var(--rail);
  stroke-width: 1;
  transition: fill 300ms ease, stroke 300ms ease;
}
.state-label {
  font: 400 10px var(--font);
  fill: var(--ink-faint);
  text-anchor: middle;
  dominant-baseline: central;
  transition: fill 300ms ease;
}
.state.is-active .state-ring { fill: var(--ink); stroke: var(--ink); }
.state.is-active .state-accept { stroke: var(--bg); }
.state.is-active .state-label { fill: var(--bg); }
.token { fill: var(--accent); opacity: 0; }

/* Red de neuronas: las conexiones crecen y las células se encienden al bajar */
.synapse {
  fill: none;
  stroke: var(--rail);
  stroke-width: 1;
  stroke-linecap: round;
  transition: stroke-dashoffset 900ms var(--ease-out), stroke 400ms ease;
}
.synapse.is-on { stroke-dashoffset: 0 !important; stroke: var(--rail-on); stroke-opacity: 0.45; }

.cell {
  opacity: 0.35;
  transform: scale(0.8);
  transition: opacity 400ms ease, transform 500ms var(--ease-out);
}
.cell.is-on { opacity: 1; transform: none; }
.cell-body { fill: var(--surface); stroke: var(--rail); stroke-width: 1; transition: fill 400ms ease, stroke 400ms ease; }
.cell.is-on .cell-body { fill: var(--accent); stroke: var(--accent); fill-opacity: 0.85; }
.cell-halo { fill: var(--accent); opacity: 0; transition: opacity 600ms ease; }
.cell.is-on .cell-halo { opacity: 0.12; }

@media (max-width: 1399px) {
  .rail { display: none; }
}

/* ---------- 15. Transiciones de tema e idioma ---------- */
/* Tema: el nuevo aparece en un círculo que crece desde el botón */
html[data-vt="theme"]::view-transition-old(root),
html[data-vt="theme"]::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}

/* Idioma: fundido corto entre textos */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 200ms;
  animation-timing-function: ease;
}

/* ---------- 16. Movimiento reducido: menos y más suave, no cero ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .intro { animation: intro-fade 300ms ease both; }
  .status-dot::after { animation: none; }
  .btn:active, .control:active, .site-nav a:active { transform: none; }
  .icon-moon, .icon-sun { transform: none; filter: none; }
  .site-header.is-compact { transform: none; }
  .synapse, .cell, .cell-body, .cell-halo, .state-ring, .state-label { transition: none; }
}

@keyframes intro-fade {
  from { opacity: 0; }
}

/* ---------- 17. Página 404 ---------- */
.not-found {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--gutter);
}
.not-found .contact { max-width: 560px; }
.not-found .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 18vw, 7rem);
  line-height: 1;
}
.not-found h1 { margin: 12px 0 10px; font-size: clamp(1.6rem, 5vw, 2.2rem); }
.not-found .contact-lead + .contact-lead { margin-top: 6px; font-size: 0.95rem; }

@media (max-width: 399px) {
  .btn { padding: 0 18px; }
  .btn-icon { padding: 0; }
}