/* ═══════════════════════════════════════════════════════════════════════════
   laton.css — sistema "latón sobre papel" compartido del repo AI-Roadmap
   ═══════════════════════════════════════════════════════════════════════════
   La ÚNICA fuente de verdad de: tokens de color (día/noche), tipografías,
   fondo de carta náutica, nav, hero, telemetría, secciones, casillas selladas,
   libros, chips, botones, principio, pie y el reveal de scroll.

   Reglas de la casa:
   - Lo que usan 2+ páginas vive AQUÍ. Lo propio de una página (la escala de
     sonda del ROADMAP, el conmutador de ejecuciones de la gemela 5…) vive
     inline en su <style>, que se carga DESPUÉS de este fichero y por eso
     puede sobreescribir lo que necesite.
   - Los DISPARADORES del sello (.item.done en el ROADMAP, .revealed en las
     gemelas) se quedan en cada página a propósito: aquí solo está la pieza.
   - La home (denysporynets.github.io) es OTRO repo y conserva su copia.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── TOKENS ─── */
:root {
  /* — latón sobre papel (idéntico a la home) — */
  --paper:    #DEDCD5;
  --paper-2:  #E5E4DE;
  --paper-3:  #D6D3C8;
  --ink:      #20272A;
  --pine:     #1E3A34;
  --signal:   #C8502A;
  --signal-ink:#A83E1E;
  --brass:    #9A7420;
  --sage:     #6E7A6F;
  --line:     rgba(30,58,52,0.16);
  --line-2:   rgba(30,58,52,0.09);

  --font-display: "Spectral", Georgia, "Times New Roman", serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --measure: 65ch;
  --pad: clamp(20px, 5vw, 40px);
}

:root[data-theme="dark"] {
  /* noche = "cabina de navegante" */
  --paper:    #161F1C;
  --paper-2:  #1D2724;
  --paper-3:  #26302C;
  --ink:      #E4E0D5;
  --pine:     #A9C6B8;
  --signal:   #D6603C;
  --signal-ink:#E8825C;
  --brass:    #CBA24D;
  --sage:     #93A096;
  --line:     rgba(196,214,204,0.16);
  --line-2:   rgba(196,214,204,0.09);
}

/* ─── BASE ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 74px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background .4s ease, color .4s ease;
}

:root[data-theme="dark"] .bg-grain { mix-blend-mode: screen; opacity: 0.05; }
:root[data-theme="dark"] .bg-contours { opacity: 0.12; }

a { color: var(--signal-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }

/* ─── FONDO: carta náutica ─── */
.bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.bg-grain {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.16; mix-blend-mode: multiply;
}
.bg-contours { position: absolute; left: 0; right: 0; top: -20vh; height: 160vh; width: 100%; opacity: 0.07; will-change: transform; }
.bg-contours path { fill: none; stroke: var(--pine); }

main, header.nav { position: relative; z-index: 1; }
.wrap { max-width: 1000px; margin: 0 auto; padding-inline: var(--pad); }

.tag {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--sage);
}
.num { font-variant-numeric: tabular-nums; }

/* ─── NAV (misma que la home + vuelta al portfolio) ─── */
header.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 58px; }
.brand { font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.02em; color: var(--pine); }
.brand b { color: var(--signal-ink); font-weight: 600; }
.back {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--sage);
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
}
.back:hover { color: var(--ink); text-decoration: none; }
.back .arw { transition: transform .16s ease; display: inline-block; }
.back:hover .arw { transform: translateX(-3px); }
.nav-right { display: flex; align-items: center; gap: 18px; }
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%; flex: none;
  border: 1px solid var(--line); background: transparent; color: var(--pine); cursor: pointer;
  transition: background .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}
.theme-toggle:hover { background: var(--paper-3); border-color: var(--brass); color: var(--brass); transform: rotate(-12deg); }
.theme-toggle svg { width: 17px; height: 17px; display: block; }
.theme-toggle .ico-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .ico-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .ico-moon { display: none; }
@media (max-width: 620px) { .brand { display: none; } }

/* ─── HERO (valores de gemela; el ROADMAP agranda el suyo inline) ─── */
.hero { padding-block: clamp(44px, 8vw, 76px) clamp(24px, 4vw, 38px); }
.hero .eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 22px; }
.estado {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--pine); border: 1px solid color-mix(in srgb, var(--pine) 34%, transparent);
  border-radius: 2px; padding: 2px 9px;
}
.estado::before { content: "●"; color: var(--signal); margin-right: 7px; font-size: 0.8em; }
.hero h1 {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(2.1rem, 5.4vw, 3.6rem); line-height: 1.07; letter-spacing: -0.015em;
  text-wrap: balance; margin: 0 0 20px; color: var(--pine);
}
.hero h1 em { font-style: italic; color: var(--signal); }
.hero .lede { max-width: 60ch; font-size: 1.04rem; margin: 0; }
.hero .lede strong { font-weight: 600; color: var(--pine); }

/* ─── TELEMETRÍA (la ficha del instrumento) ─── */
.telemetry {
  margin-top: clamp(28px, 5vw, 42px);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: 4px; overflow: hidden;
}
.tcell { background: color-mix(in srgb, var(--paper-2) 88%, transparent); padding: 15px 17px; }
.tcell b {
  display: block; font-family: var(--font-mono); font-size: 1.32rem; font-weight: 500;
  color: var(--signal-ink); letter-spacing: -0.01em; line-height: 1.2;
}
.tcell span { display: block; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.05em; color: var(--sage); margin-top: 5px; }

/* ─── SEPARADOR con marcas de instrumento ─── */
.rule {
  height: 10px; border: 0; margin: 0;
  background:
    linear-gradient(var(--line), var(--line)) left bottom / 100% 1px no-repeat,
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 28px) left bottom / 100% 6px no-repeat;
}

/* ─── SECCIONES ─── */
.sec { padding-block: clamp(34px, 6vw, 58px) 0; }
.sec > .tag { display: block; margin-bottom: 10px; }
.sec h2 {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(1.5rem, 3.2vw, 2.15rem); line-height: 1.18; letter-spacing: -0.012em;
  color: var(--pine); margin: 0 0 16px; max-width: 26ch; text-wrap: balance;
}
.sec h2 em { font-style: italic; color: var(--signal); }
.sec h3 {
  font-family: var(--font-display); font-weight: 600; font-size: 1.12rem;
  color: var(--pine); margin: 30px 0 10px;
}
.sec p { max-width: 66ch; margin: 0 0 15px; font-size: 0.98rem; }
.sec p strong { font-weight: 600; color: var(--pine); }
.sec code {
  font-family: var(--font-mono); font-size: 0.86em;
  background: color-mix(in srgb, var(--paper-3) 60%, transparent);
  border: 1px solid var(--line-2); border-radius: 2px; padding: 0.5px 5px;
}

/* ─── NOTAS ─── */
.note-brass {
  border-left: 2px solid var(--brass); padding: 4px 0 4px 16px;
  margin: 0 0 18px; max-width: 68ch; font-size: 0.9rem; color: var(--ink);
}
.note-brass strong { color: var(--brass); font-weight: 600; }

.dod {
  border: 1px solid var(--line-2); border-radius: 3px;
  padding: 14px 17px; margin: 6px 0 18px; max-width: 68ch;
  background: color-mix(in srgb, var(--paper-3) 45%, transparent);
  font-size: 0.9rem;
}
.dod .tag { display: block; margin-bottom: 5px; }
.dod em { font-family: var(--font-display); font-style: italic; font-size: 1.02rem; color: var(--pine); }
.dod .no { color: var(--sage); }

/* ─── CÓDIGO / LOG ─── */
.code {
  border: 1px solid var(--line); border-radius: 4px; overflow: hidden;
  background: color-mix(in srgb, var(--paper-2) 88%, transparent); margin: 0 0 20px;
}
.code-head {
  display: flex; flex-wrap: wrap; gap: 8px 14px; justify-content: space-between; align-items: center;
  padding: 9px 15px; border-bottom: 1px solid var(--line-2);
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.05em; color: var(--sage);
}
.code pre {
  margin: 0; padding: 15px; overflow-x: auto;
  font-family: var(--font-mono); font-size: 0.79rem; line-height: 1.75; color: var(--ink);
}
/* El estilo de código INLINE (.sec code, para la prosa) no debe colarse en los
   bloques: dentro de CUALQUIER pre (.code, paneles de pieza propia…), el <code>
   es transparente — sin esto, cada línea del bloque sale con su cajita gris.
   El segundo selector existe por especificidad: `pre code` a secas (0,0,2)
   perdería contra `.sec code` (0,1,1). */
pre code, .sec pre code { background: none; border: 0; padding: 0; font-size: inherit; border-radius: 0; }
.c-com { color: var(--sage); }
.c-key { color: var(--brass); }
.c-ok  { color: var(--pine); font-weight: 500; }
.c-bad { color: var(--signal-ink); font-weight: 500; }

/* ─── EL SELLO (la pieza; cada página pone su disparador) ─── */
.sello {
  flex: none; width: 20px; height: 20px; margin-top: 3px;
  border: 1px solid var(--line); border-radius: 2px;
  display: inline-flex; align-items: center; justify-content: center;
}
.sello svg { width: 100%; height: 100%; display: block; overflow: visible; }
/* Los dos trazos se definen UNA vez (<symbol> al principio del body) y aquí se
   instancian con <use>: stroke y stroke-dashoffset son heredables y bajan solos
   al <path> de dentro. Dos símbolos y no uno para retrasar el 2º trazo 90 ms y
   que el aspa se lea trazada a mano, no encendida de golpe. */
.sello use {
  fill: none; stroke: var(--signal); stroke-width: 2.1; stroke-linecap: round;
  stroke-dasharray: 24; stroke-dashoffset: 24;
  transition: stroke-dashoffset .34s cubic-bezier(.3,.8,.3,1);
}

/* ─── ENTREGADO (casillas selladas de las gemelas) ─── */
.checks { display: flex; flex-direction: column; gap: 2px; margin: 4px 0 22px; }
.check { display: flex; gap: 14px; align-items: flex-start; padding: 11px 10px; margin-left: -10px; border-radius: 3px; }
.check b { display: block; font-weight: 600; color: var(--pine); font-size: 0.96rem; }
.check span { display: block; font-size: 0.9rem; color: var(--ink); max-width: 62ch; }

/* ─── CADENA (pasos con flecha entre cajas; instrumento común de gemela) ───
   La gemela 2 estrecha el paso a 150px inline (le caben 4 en fila);
   la gemela 5 conserva su copia inline idéntica hasta el hito laton.js. */
.chain { display: flex; flex-wrap: wrap; align-items: stretch; gap: 10px; margin: 4px 0 22px; }
.chain-step {
  flex: 1 1 170px; border: 1px solid var(--line); border-radius: 3px;
  padding: 13px 15px; background: color-mix(in srgb, var(--paper-2) 62%, transparent);
}
.chain-step .tag { display: block; margin-bottom: 3px; }
.chain-step b { font-family: var(--font-mono); font-size: 0.88rem; color: var(--pine); font-weight: 500; display: block; }
.chain-step span { font-size: 0.82rem; color: var(--sage); }
.chain-arrow { align-self: center; color: var(--sage); font-family: var(--font-mono); }
@media (max-width: 620px) { .chain-arrow { display: none; } }

/* ─── CAPAS (filas rotuladas de "cómo está construido") ───
   La gemela 2 acorta el rótulo a 62px inline. */
.layers { display: flex; flex-direction: column; gap: 8px; margin: 4px 0 22px; }
.layer {
  display: flex; gap: 16px; align-items: baseline;
  border: 1px solid var(--line); border-radius: 3px; padding: 12px 15px;
  background: color-mix(in srgb, var(--paper-2) 62%, transparent);
}
.layer .lnum { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--brass); flex-shrink: 0; width: 92px; }
.layer .lbody { font-size: 0.9rem; color: var(--sage); }
.layer .lbody b { font-family: var(--font-mono); font-size: 0.85rem; color: var(--pine); font-weight: 500; }
@media (max-width: 620px) { .layer { flex-direction: column; gap: 4px; } }

/* ─── VEREDICTO (etiqueta de dictamen en los pies de instrumento) ─── */
.veredicto {
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase;
  border-radius: 2px; padding: 2px 9px; margin-right: 10px; white-space: nowrap;
}
.veredicto.ok { color: var(--pine); border: 1px solid color-mix(in srgb, var(--pine) 40%, transparent); }
.veredicto.ko { color: var(--signal-ink); border: 1px solid color-mix(in srgb, var(--signal) 45%, transparent); }
.veredicto.aviso { color: var(--brass); border: 1px solid color-mix(in srgb, var(--brass) 45%, transparent); }

/* ─── LIBROS ─── */
.libros { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 12px; margin: 6px 0 20px; }
.libro {
  display: block; border: 1px solid var(--line); border-radius: 4px; padding: 16px 18px;
  background: color-mix(in srgb, var(--paper-2) 55%, transparent);
  color: var(--ink); transition: border-color .16s ease, background .16s ease, transform .16s ease;
}
.libro:hover { border-color: var(--brass); background: var(--paper-2); text-decoration: none; transform: translateY(-2px); }
.libro .tag { display: block; margin-bottom: 5px; }
.libro b { display: block; font-family: var(--font-display); font-weight: 600; font-size: 1.02rem; color: var(--pine); margin-bottom: 4px; }
.libro span { display: block; font-size: 0.86rem; color: var(--sage); }

/* ─── CHIPS + BOTONES ─── */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 22px; }
.chip {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.02em;
  border: 1px solid var(--line); border-radius: 3px; padding: 5px 11px; color: var(--sage);
}
.chip b { color: var(--pine); font-weight: 500; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.79rem; letter-spacing: 0.02em;
  padding: 9px 17px; border-radius: 3px; cursor: pointer;
  border: 1px solid transparent; transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--signal-ink); color: #FDF4EC; }
.btn-primary:hover { background: #8F3417; }
:root[data-theme="dark"] .btn-primary { background: #C24A20; color: #FDF4EC; }
:root[data-theme="dark"] .btn-primary:hover { background: #A83E1E; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--pine); }
.btn-ghost:hover { background: var(--paper-3); border-color: var(--brass); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 24px; }

/* ─── PRINCIPIO + PIE ─── */
.principle { padding-block: clamp(40px, 6vw, 64px); }
.principle p {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem); line-height: 1.34; letter-spacing: -0.01em;
  color: var(--pine); max-width: 32ch; margin: 14px 0 0;
}
.principle p em { font-style: italic; color: var(--signal); }

footer { padding-block: 36px 56px; }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; align-items: baseline; }
.foot-row .tag a { color: var(--sage); }
.foot-row .tag a:hover { color: var(--signal-ink); }

/* ─── reveal "enfoque de instrumento" ─── */
.reveal { opacity: 0; transform: translateY(16px); filter: blur(7px) brightness(0.6); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.7,.2,1), filter .85s ease; }
.reveal.revealed { opacity: 1; transform: none; filter: blur(0) brightness(1); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
  .bg-contours { display: none; }
  .sello use, .libro { transition: none; }
}