/* Roger Guerrero Plana. Sistema de diseño editorial: un acento, cero cajas, mucho aire.
   Respaldos anteriores: styles-light-backup.css, styles-navy-backup.css */

/* Inter variable, autoalojada (sin Google Fonts: mejor privacidad y sin peticiones a terceros) */
@font-face {
  font-family: "InterVar";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("/fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
  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+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "InterVar";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("/fonts/inter-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308,
    U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113,
    U+2C60-2C7F, U+A720-A7FF;
}

:root {
  /* Papel y tinta */
  --paper: #fbfbf9;
  --paper-2: #f4f4f1;
  --ink: #14141a;
  --ink-2: #4a4a55;
  --ink-3: #86868f;
  --rule: rgba(20, 20, 26, 0.13);
  --rule-soft: rgba(20, 20, 26, 0.07);
  --accent: #0f6e5c;
  --accent-soft: rgba(15, 110, 92, 0.09);
  --inverse-bg: #14141a;
  --inverse-ink: #f3f3f0;
  --inverse-ink-2: #9a9aa4;
  --inverse-rule: rgba(255, 255, 255, 0.16);

  --measure: 62ch;
  --max: 1180px;
  --gut: 40px;
  --rail: 200px;
  --rail-gap: 44px;
  --indent: 244px; /* rail + gap */
}

html[data-theme="dark"] {
  --paper: #101014;
  --paper-2: #16161c;
  --ink: #f3f3f0;
  --ink-2: #b4b4bd;
  --ink-3: #7c7c86;
  --rule: rgba(255, 255, 255, 0.16);
  --rule-soft: rgba(255, 255, 255, 0.08);
  --accent: #4fd6bb;
  --accent-soft: rgba(79, 214, 187, 0.12);
  --inverse-bg: #f3f3f0;
  --inverse-ink: #14141a;
  --inverse-ink-2: #55555f;
  --inverse-rule: rgba(20, 20, 26, 0.16);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: "InterVar", "Inter", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "cv05" 1, "ss03" 1;
  font-optical-sizing: auto;
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.62;
  letter-spacing: -0.005em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
}

.mono {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem; letter-spacing: 0.06em;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); }

a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 1.5px solid var(--accent); outline-offset: 4px; }

/* Rótulo de sección */
.kicker {
  display: block; font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3);
}

/* ---------- Nav ---------- */
header.nav {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--rule-soft);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 20px var(--gut);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand {
  text-decoration: none; font-weight: 600; font-size: 0.95rem; letter-spacing: -0.01em; color: var(--ink);
}
.brand span { color: var(--ink-3); font-weight: 400; }
nav.links { display: flex; gap: 30px; align-items: center; }
nav.links a {
  color: var(--ink-2); text-decoration: none; font-size: 0.85rem; font-weight: 450;
  position: relative; padding-bottom: 2px;
}
nav.links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--ink); transition: right 0.25s cubic-bezier(0.2, 0.7, 0.2, 1);
}
nav.links a:hover { color: var(--ink); }
nav.links a:hover::after { right: 0; }
.theme-btn, .lang-switch {
  font-family: inherit; font-size: 0.72rem; font-weight: 500; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-3); background: none; border: none;
  cursor: pointer; padding: 0 !important; text-decoration: none;
}
.theme-btn:hover, .lang-switch:hover { color: var(--ink); }
.lang-switch::before { content: ""; display: inline-block; width: 1px; height: 11px; background: var(--rule); margin-right: 30px; vertical-align: -1px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 132px 0 108px; overflow: hidden; }
#bg-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.85; }
.hero .wrap { position: relative; z-index: 2; }
.hero-top { margin-bottom: 72px; }
.hero-grid { display: grid; grid-template-columns: 1fr 0.85fr; gap: 72px; align-items: start; }

.hero .kicker { margin-bottom: 30px; }
.hero h1 {
  font-size: clamp(2.5rem, 5.6vw, 4.9rem);
  line-height: 1.02; font-weight: 600; letter-spacing: -0.04em;
  color: var(--ink); max-width: 21ch;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero h1 .word { display: inline-block; }
.js-anim .hero h1 .word {
  opacity: 0; transform: translateY(0.4em);
  animation: word-in 0.75s cubic-bezier(0.16, 1, 0.3, 1) forwards; animation-delay: var(--d, 0s);
}
@keyframes word-in { to { opacity: 1; transform: none; } }

.hero p.lede {
  margin-top: 0; max-width: 44ch; font-size: 1.06rem; color: var(--ink-2); line-height: 1.62;
}
.hero .cta-row { margin-top: 40px; display: flex; gap: 32px; align-items: center; flex-wrap: wrap; }

.btn {
  display: inline-block; text-decoration: none; font-family: inherit;
  font-size: 0.9rem; font-weight: 500; letter-spacing: 0.01em; border: none; cursor: pointer;
}
.btn-primary {
  background: var(--ink); color: var(--paper);
  padding: 15px 30px; border-radius: 2px;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}
.btn-primary:hover { opacity: 0.86; }
.btn-ghost { color: var(--ink); padding-bottom: 3px; border-bottom: 1px solid var(--rule); background: none; }
.btn-ghost:hover { border-color: var(--ink); }

/* Chat */
.chat { border: 1px solid var(--rule); border-radius: 3px; background: var(--paper); overflow: hidden; }
.chat-bar {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  border-bottom: 1px solid var(--rule-soft);
}
.chat-bar > span { display: none; }
.chat-bar b {
  font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.66rem; font-weight: 400;
  letter-spacing: 0.05em; color: var(--ink-3);
}
.chat-bar b i { font-style: normal; color: var(--accent); }
.chat-body {
  padding: 20px 18px 8px; display: flex; flex-direction: column; gap: 12px;
  min-height: 172px; max-height: 300px; overflow-y: auto; scrollbar-width: thin;
}
.msg { max-width: 92%; font-size: 0.86rem; line-height: 1.55; padding: 0; }
.msg.bot { color: var(--ink-2); align-self: flex-start; }
.msg.bot::before {
  content: "AI"; display: block; font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.6rem; letter-spacing: 0.14em; color: var(--accent); margin-bottom: 5px;
}
.msg.user { color: var(--ink); font-weight: 500; align-self: flex-start; padding-left: 0; }
.msg.user::before {
  content: "TÚ"; display: block; font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.6rem; letter-spacing: 0.14em; color: var(--ink-3); margin-bottom: 5px;
}
html[lang="en"] .msg.user::before { content: "YOU"; }
.msg .cursor {
  display: inline-block; width: 7px; height: 13px; background: var(--accent);
  vertical-align: -1px; margin-left: 3px; animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.typing { display: inline-flex; gap: 4px; align-items: center; }
.typing i { width: 4px; height: 4px; border-radius: 50%; background: var(--ink-3); animation: tp 1s ease-in-out infinite; }
.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes tp { 40% { transform: translateY(-3px); opacity: 1; } }
.chips { display: flex; flex-wrap: wrap; gap: 0; padding: 10px 0 0; border-top: 1px solid var(--rule-soft); margin: 8px 18px 14px; }
.chip {
  font-family: inherit; font-size: 0.78rem; font-weight: 450; cursor: pointer;
  color: var(--ink-2); background: none; border: none; padding: 5px 0; margin-right: 18px;
  border-bottom: 1px solid transparent; transition: color 0.15s ease, border-color 0.15s ease;
}
.chip:hover:not(:disabled) { color: var(--accent); border-bottom-color: var(--accent); }
.chip:disabled { opacity: 0.35; cursor: default; }

/* Prueba: fila de datos, sin cajas */
.proof {
  margin-top: 96px; padding-top: 28px; border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px;
}
.proof .stat b {
  display: block; font-size: 0.86rem; font-weight: 550; letter-spacing: -0.01em;
  color: var(--ink); margin-bottom: 6px;
}
.proof .stat > span { display: block; font-size: 0.8rem; color: var(--ink-3); line-height: 1.5; }

/* Cinta */
.marquee { overflow: hidden; padding: 22px 0; border-top: 1px solid var(--rule-soft); border-bottom: 1px solid var(--rule-soft); }
.marquee-track { display: flex; width: max-content; animation: marquee 60s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-size: 0.78rem; font-weight: 450; letter-spacing: 0.18em; text-transform: uppercase;
  white-space: nowrap; padding-right: 40px; color: var(--ink-3);
}
.marquee-track span b { font-weight: 450; color: var(--accent); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Secciones ---------- */
section { padding: 120px 0; }
section.alt { background: var(--paper-2); }
.section-head {
  margin-bottom: 68px; display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr); column-gap: var(--rail-gap);
  align-items: start;
}
.section-head .kicker { grid-column: 1; grid-row: 1; padding-top: 9px; }
.section-head h2 {
  grid-column: 2; grid-row: 1;
  font-size: clamp(1.7rem, 3.1vw, 2.5rem); font-weight: 600;
  letter-spacing: -0.032em; line-height: 1.1; color: var(--ink); max-width: 22ch;
}
.section-head p {
  grid-column: 2; grid-row: 2;
  margin-top: 20px; color: var(--ink-2); max-width: var(--measure); font-size: 0.98rem;
}

/* Caso protagonista */
.case-feature { border-top: 1px solid var(--ink); padding-top: 34px; }
.case-feature .head {
  display: grid; grid-template-columns: var(--rail) minmax(0, 1fr);
  column-gap: var(--rail-gap); align-items: start;
}
.case-feature .head > div { grid-column: 2; grid-row: 1; }
.case-feature .head > .tag-row {
  grid-column: 1; grid-row: 1; margin: 6px 0 0; flex-direction: column; gap: 7px;
}
.case-feature h3 { font-size: clamp(1.5rem, 2.7vw, 2.15rem); font-weight: 600; letter-spacing: -0.032em; line-height: 1.1; max-width: 18ch; }
.case-feature .sub { margin-top: 10px; font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.68rem; letter-spacing: 0.06em; color: var(--ink-3); text-transform: uppercase; }
.case-feature > p { margin: 26px 0 0 var(--indent); color: var(--ink-2); max-width: var(--measure); }

.giant-metrics {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px;
  margin: 64px 0 56px;
}
.gm b {
  display: block; font-size: clamp(2.6rem, 5.2vw, 4rem); font-weight: 400;
  line-height: 0.95; letter-spacing: -0.045em; color: var(--ink);
  font-variant-numeric: tabular-nums; margin-bottom: 14px;
}
.gm > span {
  display: block; font-size: 0.78rem; color: var(--ink-3); line-height: 1.5;
  padding-top: 14px; border-top: 1px solid var(--rule);
}
.gm b span { font-size: inherit; font-weight: inherit; color: inherit; letter-spacing: inherit; }

.case-feature ul, .case-secondary ul { list-style: none; margin: 0 0 0 var(--indent); max-width: var(--measure); }
.case-feature ul li, .case-secondary ul li {
  padding: 14px 0; border-top: 1px solid var(--rule-soft); color: var(--ink-2); font-size: 0.94rem;
}
.case-feature ul li:last-child, .case-secondary ul li:last-child { border-bottom: 1px solid var(--rule-soft); }

.case-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; margin-top: 96px; }
.case-secondary { border-top: 1px solid var(--ink); padding-top: 30px; }
.big-num {
  font-size: clamp(2.4rem, 4.6vw, 3.4rem); font-weight: 400; line-height: 0.95;
  letter-spacing: -0.045em; color: var(--accent); font-variant-numeric: tabular-nums; margin-bottom: 18px;
}
.case-secondary h3 { font-size: 1.24rem; font-weight: 600; letter-spacing: -0.025em; line-height: 1.2; margin-bottom: 8px; }
.case-secondary .sub { font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 20px; }
.case-secondary p { color: var(--ink-2); font-size: 0.95rem; margin-bottom: 22px; }
.case-secondary ul { margin-left: 0; }

/* Etiquetas: texto fino, sin píldoras */
.tag-row { display: flex; flex-wrap: wrap; gap: 0 22px; margin-top: 26px; }
.tag {
  font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.68rem;
  letter-spacing: 0.06em; color: var(--ink-3); text-transform: uppercase;
  background: none; border: none; padding: 0;
}
.case-feature > .tag-row { margin-left: var(--indent); }

.built-strip { margin-top: 88px; padding-top: 26px; border-top: 1px solid var(--rule); }
.built-strip p { font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.built-strip .tag-row { margin-top: 16px; gap: 0 26px; }
.built-strip .tag { color: var(--ink-2); text-transform: none; letter-spacing: 0.02em; font-size: 0.76rem; }

/* Declaración */
.statement { padding: 150px 0; }
.statement p {
  font-size: clamp(2.4rem, 6.4vw, 5.2rem); font-weight: 600; letter-spacing: -0.045em;
  line-height: 0.98; color: var(--ink); max-width: 16ch;
}
.statement em { font-style: normal; color: var(--ink-3); }

/* Servicios */
.feature-row {
  display: grid; grid-template-columns: var(--rail) minmax(0, 1fr) minmax(0, 1fr);
  column-gap: var(--rail-gap); align-items: start;
  padding: 40px 0; border-top: 1px solid var(--rule);
}
.feature-row:last-of-type { border-bottom: 1px solid var(--rule); }
.feature-row .n { font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.7rem; letter-spacing: 0.08em; color: var(--ink-3); padding-top: 7px; }
.feature-row h3 { font-size: 1.35rem; font-weight: 600; letter-spacing: -0.028em; line-height: 1.2; margin-bottom: 10px; }
.feature-row .f-desc { color: var(--ink-2); font-size: 0.95rem; max-width: 34ch; }
.feature-row ul { list-style: none; }
.feature-row ul li { padding: 9px 0; color: var(--ink-2); font-size: 0.9rem; border-bottom: 1px solid var(--rule-soft); }
.feature-row ul li:last-child { border-bottom: none; }

.also-label { margin: 76px 0 26px; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }

/* Encargos pequeños */
.starters { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--rail-gap); }
.starter {
  display: grid; grid-template-columns: 34px 1fr; gap: 18px;
  padding: 28px 0; border-top: 1px solid var(--rule);
}
.starter .n { font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.7rem; letter-spacing: 0.08em; color: var(--accent); padding-top: 5px; }
.starter h4 { font-size: 1.06rem; font-weight: 600; letter-spacing: -0.024em; line-height: 1.25; margin-bottom: 10px; }
.starter p { font-size: 0.9rem; color: var(--ink-2); margin-bottom: 12px; }
.starter .backed { display: block; font-size: 0.78rem; color: var(--ink-3); line-height: 1.5; }
.grid-mini { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.mini-card { border-top: 1px solid var(--rule); padding-top: 20px; }
.mini-card h4 { font-size: 0.98rem; font-weight: 550; letter-spacing: -0.018em; margin-bottom: 8px; }
.mini-card p { font-size: 0.86rem; color: var(--ink-3); line-height: 1.55; }

/* Método */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 56px; }
.step { border-top: 1px solid var(--ink); padding-top: 26px; }
.step .n { font-family: "SFMono-Regular", Consolas, monospace; font-size: 0.7rem; letter-spacing: 0.08em; color: var(--accent); }
.step h3 { font-size: 1.2rem; font-weight: 600; letter-spacing: -0.025em; margin: 16px 0 12px; }
.step p { font-size: 0.93rem; color: var(--ink-2); }

/* Formación */
.creds-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 0 72px; }
.creds-list li { padding: 20px 0; border-top: 1px solid var(--rule); }
.creds-list b { font-weight: 550; font-size: 0.98rem; letter-spacing: -0.018em; }
.creds-list span { display: block; color: var(--ink-3); font-size: 0.84rem; margin-top: 3px; }

/* Contacto */
.contact {
  background: var(--inverse-bg); color: var(--inverse-ink);
  padding: 96px 72px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 72px; align-items: end;
}
.contact h2 { font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 600; letter-spacing: -0.038em; line-height: 1.05; max-width: 14ch; }
.contact p { margin-top: 24px; color: var(--inverse-ink-2); max-width: 44ch; font-size: 0.98rem; }
.contact .channels { display: flex; flex-direction: column; }
.channel {
  display: block; text-decoration: none; color: var(--inverse-ink);
  padding: 22px 0; border-top: 1px solid var(--inverse-rule);
  font-size: 1.02rem; font-weight: 500; letter-spacing: -0.02em;
  transition: padding-left 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.channel:last-child { border-bottom: 1px solid var(--inverse-rule); }
.channel:hover { padding-left: 10px; }
.channel small { display: block; font-weight: 400; color: var(--inverse-ink-2); font-size: 0.82rem; margin-top: 3px; letter-spacing: 0; }

footer { padding: 44px 0 60px; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; font-size: 0.78rem; color: var(--ink-3); flex-wrap: wrap; }

/* Aparición */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js-anim .hero h1 .word { animation: none; opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .msg .cursor { animation: none; }
}

@media (max-width: 1000px) {
  :root { --gut: 28px; --indent: 0px; }
  .section-head, .case-feature .head { grid-template-columns: 1fr; row-gap: 14px; }
  .section-head .kicker, .section-head h2, .section-head p,
  .case-feature .head > div, .case-feature .head > .tag-row { grid-column: 1; grid-row: auto; }
  .case-feature .head > .tag-row { flex-direction: row; gap: 0 22px; }
  .case-feature > p, .case-feature ul, .case-feature > .tag-row, .case-secondary ul { margin-left: 0; }
  .feature-row { grid-template-columns: 60px 1fr; }
  .feature-row ul { grid-column: 2; }
  .giant-metrics, .grid-mini { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .starters { grid-template-columns: 1fr; }
  .proof { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .steps, .case-duo { grid-template-columns: 1fr; gap: 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 56px; align-items: start; }
  .contact { grid-template-columns: 1fr; padding: 64px 32px; gap: 40px; }
  .creds-list { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  section, .statement { padding: 76px 0; }
  .hero { padding: 76px 0 64px; }
  .proof { grid-template-columns: 1fr; margin-top: 64px; }
  .giant-metrics, .grid-mini { grid-template-columns: 1fr; }
  nav.links a:not(.lang-switch):not(.theme-btn) { display: none; }
  .lang-switch::before { display: none; }
  nav.links { gap: 20px; }
}