/* ---------------------------------------------------------------------------
   Portfolio — hoja de estilo unica. Ver docs/DISENO.md antes de cambiar nada.

   DIRECCION: "tablero de operaciones".
   El tema del portfolio es que los sistemas SIGUEN FUNCIONANDO solos. El sitio
   se viste con el lenguaje de un panel de servicio: banda oscura arriba y abajo
   con el estado de lo que esta en marcha, cuerpo claro y tranquilo en medio.

   · Tipografia: Archivo (grotesca ancha, de senalizacion) para titulares +
     Newsreader (serif de texto) para lectura + IBM Plex Mono para etiquetas.
     Sans para titulos y serif para el cuerpo es la inversion deliberada.
     NO Inter / Geist / Space Grotesk.
   · Fondo claro gris frio de sesgo azul, NUNCA blanco puro ni crema calido.
   · Un solo acento: azul profundo corporativo. Sobrio, serio, sin estridencias.
     Sin arcoiris, sin degradados decorativos, sin sombras.
   · La jerarquia la dan filetes de 1px, el espacio y el contraste de bandas.
--------------------------------------------------------------------------- */

:root {
  color-scheme: light dark;

  --paper: #edeff3;
  --surface: #f8f9fb;
  --ink: #0c1320;
  --ink-soft: #46516a;
  --ink-faint: #626e8a;
  --line: #dadee6;
  --line-strong: #b9c0ce;
  --accent: #1b4d7e;
  --accent-deep: #133a61;
  --accent-wash: #dce4ee;

  /* banda oscura: existe igual en los dos temas */
  --board: #0c1320;
  --board-ink: #eaedf3;
  --board-soft: #8b96ab;
  --board-line: #1e2839;
  --board-accent: #6aa5dd;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "Newsreader", "Iowan Old Style", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --wrap: 1140px;
  --gut: clamp(1.25rem, 5vw, 4rem);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0a0f17;
    --surface: #111823;
    --ink: #e6eaf1;
    --ink-soft: #98a3b8;
    --ink-faint: #7c8799;
    --line: #1b2330;
    --line-strong: #2e3849;
    --accent: #6aa5dd;
    --accent-deep: #8bbce8;
    --accent-wash: #121c28;
    --board: #06090f;
    --board-line: #19212e;
  }
}

:root[data-theme="dark"] {
  --paper: #0a0f17;
  --surface: #111823;
  --ink: #e6eaf1;
  --ink-soft: #98a3b8;
  --ink-faint: #7c8799;
  --line: #1b2330;
  --line-strong: #2e3849;
  --accent: #6aa5dd;
  --accent-deep: #8bbce8;
  --accent-wash: #121c28;
  --board: #06090f;
  --board-line: #19212e;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-optical-sizing: auto;
  font-size: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--display);
  font-variation-settings: "wdth" 112;
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.022em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 0.9em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-decoration-color: var(--line-strong); text-underline-offset: 0.2em; }
a:hover { text-decoration-color: var(--accent); }

em { font-style: normal; color: var(--board-accent); }

::selection { background: var(--accent); color: var(--paper); }

:focus-visible { outline: 2px solid var(--board-accent); outline-offset: 3px; border-radius: 2px; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.skip { position: absolute; left: -9999px; background: var(--ink); color: var(--paper); padding: .6rem 1rem; z-index: 100; }
.skip:focus { left: 1rem; top: 1rem; }

/* --- etiqueta monoespaciada: la voz "de panel" del sitio --------------- */
.tag {
  font-family: var(--mono);
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* --- barra superior: forma parte del tablero, siempre oscura ---------- */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: var(--board);
  color: var(--board-ink);
  border-bottom: 1px solid var(--board-line);
}
.site-head .wrap { display: flex; align-items: center; gap: 1.5rem; min-height: 58px; }
.brand {
  font-family: var(--display);
  font-variation-settings: "wdth" 100;
  font-weight: 700; font-size: .9375rem;
  letter-spacing: .01em; text-transform: uppercase;
  text-decoration: none; white-space: nowrap;
}
.nav { margin-left: auto; display: flex; align-items: center; gap: 1.35rem; }
.nav a {
  font-family: var(--display); font-variation-settings: "wdth" 100; font-weight: 500;
  font-size: .8125rem; text-decoration: none; color: var(--board-soft);
}
.nav a:hover { color: var(--board-ink); }
.lang {
  font-family: var(--mono) !important; font-size: .6875rem; letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid var(--board-line); border-radius: 2px;
  padding: .28rem .6rem;
}
.lang:hover { border-color: var(--board-accent); color: var(--board-accent) !important; }
@media (max-width: 880px) { .nav a:not(.lang) { display: none; } }

/* --- banda oscura (hero y contacto) ----------------------------------- */
.board { background: var(--board); color: var(--board-ink); }
.board .tag { color: var(--board-soft); }
.board h1, .board h2 { color: var(--board-ink); }

.hero { padding: clamp(3rem, 8vw, 6rem) 0 0; }
.hero .eyebrow { display: flex; align-items: center; gap: .6rem; margin-bottom: 1.6rem; }
.hero h1 {
  font-size: clamp(2.4rem, 1rem + 5.6vw, 5.1rem);
  font-variation-settings: "wdth" 118;
  max-width: 16ch;
  margin-bottom: 1.35rem;
}
.hero .lede {
  font-size: clamp(1.0625rem, 1rem + .45vw, 1.3125rem);
  color: var(--board-soft);
  max-width: 54ch;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2.1rem; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--display); font-variation-settings: "wdth" 100;
  font-weight: 600; font-size: .9375rem;
  padding: .7rem 1.3rem; border-radius: 2px; text-decoration: none;
  border: 1px solid transparent;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--board-accent); color: var(--board); border-color: var(--board-accent); }
.btn-primary:hover { background: var(--board-ink); border-color: var(--board-ink); }
.btn-ghost { background: transparent; color: var(--board-ink); border-color: var(--board-line); }
.btn-ghost:hover { border-color: var(--board-soft); }

/* punto de estado: el unico elemento vivo de la pagina */
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--board-accent); flex: none; }
@media (prefers-reduced-motion: no-preference) {
  .dot { animation: pulse 3.6s ease-in-out infinite; }
  @keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--board-accent) 55%, transparent); }
    55%      { box-shadow: 0 0 0 6px transparent; }
  }
}

/* --- fila de cifras: el "marcador" del tablero ------------------------- */
.readout {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--board-line);
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.readout .cell { padding: 1.6rem 1.25rem 2rem 0; }
.readout .cell + .cell { border-left: 1px solid var(--board-line); padding-left: 1.25rem; }
.readout .num {
  font-family: var(--display); font-variation-settings: "wdth" 100;
  font-weight: 700; font-size: clamp(1.9rem, 1.2rem + 2.2vw, 2.9rem);
  line-height: 1; letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  color: var(--board-accent); display: block; margin-bottom: .55rem;
}
.readout p { font-family: var(--mono); font-size: .6875rem; letter-spacing: .06em; line-height: 1.5; color: var(--board-soft); text-transform: uppercase; }
@media (max-width: 780px) {
  .readout { grid-template-columns: repeat(2, 1fr); }
  .readout .cell { padding: 1.25rem 1rem 1.25rem 0; }
  .readout .cell:nth-child(3) { border-left: 0; padding-left: 0; border-top: 1px solid var(--board-line); }
  .readout .cell:nth-child(4) { border-top: 1px solid var(--board-line); }
}

/* --- secciones claras -------------------------------------------------- */
section { scroll-margin-top: 72px; }
.band { padding: clamp(3.5rem, 8vw, 6.5rem) 0; }
.band + .band { border-top: 1px solid var(--line); }
.band-surface { background: var(--surface); }

.sec-head { max-width: 60ch; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.sec-head .tag { display: block; margin-bottom: .9rem; }
.sec-head h2 { font-size: clamp(1.9rem, 1.15rem + 2.6vw, 3.1rem); margin-bottom: .9rem; }
.sec-head p { color: var(--ink-soft); max-width: 52ch; }

/* --- servicios: lista a dos columnas, sin numeros decorativos --------- */
.services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 clamp(2rem, 5vw, 4.5rem); }
.service { padding: 1.6rem 0; border-top: 1px solid var(--line); }
.service h3 {
  font-size: 1.1875rem; line-height: 1.22; margin-bottom: .55rem;
  font-variation-settings: "wdth" 100;
  padding-left: 1rem; border-left: 2px solid var(--accent);
}
.service p { color: var(--ink-soft); font-size: .9375rem; padding-left: 1rem; }
@media (max-width: 820px) { .services { grid-template-columns: 1fr; } }

/* --- libro de registro: los trabajos ---------------------------------- */
.entry {
  display: grid;
  grid-template-columns: minmax(0, 11rem) 1fr;
  gap: 1rem clamp(1.5rem, 4vw, 3.25rem);
  padding: clamp(2.25rem, 4vw, 3.25rem) 0;
  border-top: 1px solid var(--line-strong);
}
.entry:last-child { border-bottom: 1px solid var(--line-strong); }

/* raíl izquierdo: solo informacion real (estado, tipo, año) */
.entry-rail { display: flex; flex-direction: column; gap: .55rem; }
.entry-rail .tag { line-height: 1.4; }
.rail-kind {
  font-family: var(--display); font-variation-settings: "wdth" 100;
  font-weight: 700; font-size: .8125rem; line-height: 1.25;
  color: var(--accent);
  padding-bottom: .35rem; border-bottom: 2px solid var(--accent);
  align-self: start;
}

.entry-body { min-width: 0; }
.entry h3 {
  font-size: clamp(1.5rem, 1.05rem + 1.6vw, 2.2rem);
  font-variation-settings: "wdth" 108;
  margin-bottom: 1.35rem; max-width: 22ch;
}

.ba { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(1.5rem, 3vw, 3rem); margin-bottom: 1.4rem; }
.ba > div { padding-top: .9rem; border-top: 1px solid var(--line); }
.ba .lbl { display: block; margin-bottom: .5rem; }
.ba p { font-size: .9375rem; }
.ba .before p { color: var(--ink-faint); }
.ba .after { border-top: 1px solid var(--accent); }
.ba .after .lbl { color: var(--accent); }
@media (max-width: 720px) { .ba { grid-template-columns: 1fr; gap: 1.1rem; } }

.note {
  border-left: 2px solid var(--accent);
  padding: .1rem 0 .1rem 1.1rem;
  margin-bottom: 1.4rem;
  font-size: .9375rem; max-width: 60ch;
}

.facts { display: flex; flex-wrap: wrap; gap: 1.6rem; margin-bottom: 1.2rem; }
.fact .v {
  font-family: var(--display); font-variation-settings: "wdth" 100;
  font-weight: 700; font-size: 1.3125rem; line-height: 1;
  font-variant-numeric: tabular-nums;
  display: block; margin-bottom: .3rem;
}
.fact .k { font-family: var(--mono); font-size: .625rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }

.chips { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.chips-lbl { margin-right: .35rem; }
.chip {
  font-family: var(--mono); font-size: .6875rem; letter-spacing: .05em;
  border: 1px solid var(--line-strong); border-radius: 2px;
  padding: .22rem .6rem; color: var(--ink-soft);
}

@media (max-width: 680px) { .entry { grid-template-columns: 1fr; } }

/* --- proceso: aqui la numeracion SI es real (es una secuencia) -------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }
.step { border-top: 2px solid var(--ink); padding-top: 1.05rem; }
.step .n { display: block; margin-bottom: .7rem; color: var(--accent); font-variant-numeric: tabular-nums; }
.step h3 { font-size: 1.0625rem; font-variation-settings: "wdth" 100; margin-bottom: .5rem; line-height: 1.22; }
.step p { font-size: .9375rem; color: var(--ink-soft); }
@media (max-width: 920px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* --- filas (hoja de ruta y principios) -------------------------------- */
.rows { border-top: 1px solid var(--line); }
.row {
  display: grid; grid-template-columns: minmax(0, 21rem) 1fr;
  gap: .4rem clamp(1.5rem, 4vw, 3.5rem);
  padding: 1.4rem 0; border-bottom: 1px solid var(--line);
}
.row h3 { font-size: 1.125rem; font-variation-settings: "wdth" 100; line-height: 1.25; }
.row p { color: var(--ink-soft); font-size: .9375rem; }
@media (max-width: 780px) { .row { grid-template-columns: 1fr; } }

/* --- contacto: cierra el tablero -------------------------------------- */
.contact { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.contact h2 { font-size: clamp(2rem, 1.1rem + 3.4vw, 3.6rem); font-variation-settings: "wdth" 118; margin-bottom: 1.1rem; }
.contact .lede { font-size: 1.125rem; color: var(--board-soft); max-width: 48ch; }
.contact .note { border-left-color: var(--board-accent); margin: 2.1rem 0 0; color: var(--board-soft); font-size: .9375rem; }

/* --- pie -------------------------------------------------------------- */
.site-foot {
  background: var(--board); color: var(--board-soft);
  border-top: 1px solid var(--board-line);
  padding: 1.75rem 0; font-size: .8125rem;
}
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; align-items: center; }
.site-foot .tag { color: var(--board-soft); }
.site-foot .right { margin-left: auto; }

@media print {
  .site-head, .hero-actions, .lang { display: none; }
  body, .board, .site-foot { background: #fff; color: #000; }
}