/* ==========================================================================
   Punto Networks — hoja de estilos
   Dirección: plano de ingeniería. Papel vitela, tinta verde-negra,
   retícula de trazado y rojo de anotación usado con moderación.
   ========================================================================== */

:root {
  /* Paleta */
  --paper:      #EDEFEC;
  --paper-2:    #E3E7E2;
  --white:      #FBFCFA;
  --ink:        #0F1613;
  --ink-2:      #1D2723;
  --graphite:   #59635D;
  --rule:       #C7CEC7;
  --rule-soft:  #DBE0DA;
  --nonphoto:   #9FC3D9;
  --red:        #B7332A;
  --red-soft:   #F0DDDA;

  /* Tipografía */
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Medidas */
  --wrap: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --grid-size: 26px;
  --radius: 2px;
}

/* ------------------------------------------------------------------ Reset */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; }
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

/* ------------------------------------------------------------- Tipografía */

.u-display {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.99;
}

.u-mono {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}

.u-lead {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.6;
  color: var(--ink-2);
}

.u-muted { color: var(--graphite); }
.u-red { color: var(--red); }

/* Marca de anotación: subrayado a mano alzada bajo una palabra clave */
.u-mark {
  background-image: linear-gradient(var(--red), var(--red));
  background-repeat: no-repeat;
  background-size: 100% 2px;
  background-position: 0 92%;
  padding-bottom: 0.06em;
}

/* --------------------------------------------------------------- Utilidad */

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  z-index: 999;
  font-family: var(--mono);
  font-size: 0.75rem;
}
.skip:focus { left: 0; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Retícula de trazado — sólo en zonas concretas, nunca de fondo general */
.gridpaper {
  position: relative;
  isolation: isolate;
}
.gridpaper::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--nonphoto) 1px, transparent 1px),
    linear-gradient(to bottom, var(--nonphoto) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  opacity: 0.22;
  mask-image: linear-gradient(to bottom, #000 0%, #000 62%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 62%, transparent 100%);
  pointer-events: none;
}

/* ---------------------------------------------------------------- Cabecera */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(237, 239, 236, 0.92);
  backdrop-filter: saturate(140%) blur(9px);
  -webkit-backdrop-filter: saturate(140%) blur(9px);
  border-bottom: 1px solid var(--rule);
}

.masthead__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 4.25rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  text-decoration: none;
  margin-right: auto;
  flex-shrink: 0;
}
.brand__mark {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  border: 1px solid var(--ink);
  padding: 0.2rem 0.34rem;
  line-height: 1;
  align-self: center;
}
.brand__name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.nav { display: flex; align-items: center; gap: 1.75rem; }

.nav__link {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--ink-2);
  padding-block: 0.4rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.16s ease, color 0.16s ease;
}
.nav__link:hover { border-bottom-color: var(--red); }
.nav__link[aria-current="page"] {
  border-bottom-color: var(--ink);
  font-weight: 500;
}

.langswitch {
  display: flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
}
.langswitch a {
  padding: 0.32rem 0.5rem;
  text-decoration: none;
  color: var(--graphite);
  line-height: 1;
}
.langswitch a[aria-current="true"] {
  background: var(--ink);
  color: var(--white);
}

.navtoggle {
  display: none;
  background: none;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.45rem 0.6rem;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--ink);
}

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

.hero {
  padding-top: clamp(3rem, 7vw, 5.5rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--rule);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--graphite);
  margin-bottom: 1.5rem;
}
.hero__eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.hero__title {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.038em;
  line-height: 0.97;
  font-size: clamp(2.6rem, 5.6vw, 4.5rem);
  margin-bottom: 1.4rem;
}

.hero__body { max-width: 46ch; margin-bottom: 2rem; }

/* ---------------------------------------------------------------- Botones */

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, transform 0.16s ease;
}
.btn--solid { background: var(--ink); color: var(--white); }
.btn--solid:hover { background: var(--red); border-color: var(--red); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--white); }
.btn__arrow { transition: transform 0.16s ease; }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* -------------------------------------------------------- Esquema de red */

.schematic { width: 100%; height: auto; }
.schematic .s-rule { stroke: var(--rule); stroke-width: 1; }
.schematic .s-link { stroke: var(--ink); stroke-width: 1.4; fill: none; }
.schematic .s-link--alt { stroke: var(--graphite); stroke-width: 1.2; stroke-dasharray: 5 4; fill: none; }
.schematic .s-node { fill: var(--white); stroke: var(--ink); stroke-width: 1.4; }
.schematic .s-node--key { fill: var(--ink); }
.schematic .s-label {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.12em;
  fill: var(--ink);
  text-transform: uppercase;
}
.schematic .s-dim {
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.1em;
  fill: var(--graphite);
}
.schematic .s-nodelabel { fill: var(--white); }

/* Ruta trazada: el paquete recorre el camino principal */
.schematic .s-trace {
  stroke: var(--red);
  stroke-width: 2.2;
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 28 740;
  stroke-dashoffset: 768;
  animation: trace 6s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}
@keyframes trace { to { stroke-dashoffset: -28; } }

.schematic .s-pulse {
  fill: var(--red);
  animation: pulse 5.5s ease-in-out infinite;
  transform-origin: center;
}
@keyframes pulse {
  0%, 100% { opacity: 0.25; }
  50%      { opacity: 1; }
}

/* --------------------------------------------------- Franja de acotaciones */

.dimstrip {
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}
.dimstrip__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.dimstrip__item {
  padding: 1.6rem var(--gutter) 1.5rem;
  border-left: 1px solid var(--rule);
}
.dimstrip__item:first-child { border-left: 0; }
.dimstrip__val {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.45rem;
}
.dimstrip__key {
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--graphite);
  line-height: 1.5;
}

/* --------------------------------------------------------------- Secciones */

.band { padding-block: clamp(3.5rem, 7vw, 6rem); }
.band + .band { border-top: 1px solid var(--rule); }
.band--tint { background: var(--paper-2); }
.band--ink { background: var(--ink); color: var(--paper); }
.band--ink .u-muted { color: #9BA6A0; }
.band--ink a { color: var(--paper); }

.sechead { margin-bottom: clamp(2rem, 4vw, 3rem); max-width: 60ch; }
.sechead__eyebrow {
  display: block;
  color: var(--red);
  margin-bottom: 0.9rem;
}
.band--ink .sechead__eyebrow { color: var(--nonphoto); }
.sechead__title {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.032em;
  line-height: 1.04;
  font-size: clamp(1.85rem, 3.4vw, 2.85rem);
  margin-bottom: 0.9rem;
}
.sechead__intro { color: var(--graphite); max-width: 56ch; }
.band--ink .sechead__intro { color: #9BA6A0; }

/* ------------------------------------------------- Índice de prestaciones */

.schedule { border-top: 1px solid var(--rule); }
.band--ink .schedule { border-color: #2C3733; }

.schedule__row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr) minmax(0, 1.5fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
.band--ink .schedule__row { border-color: #2C3733; }

.schedule__code {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--red);
  padding-top: 0.28rem;
}
.band--ink .schedule__code { color: var(--nonphoto); }

.schedule__name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.schedule__desc { color: var(--graphite); font-size: 0.98rem; }
.band--ink .schedule__desc { color: #9BA6A0; }

/* ------------------------------------------------------------- Cuadrícula */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.band--ink .cards { background: #2C3733; border-color: #2C3733; }

.card {
  background: var(--paper);
  padding: clamp(1.5rem, 2.6vw, 2.1rem);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.band--tint .card { background: var(--paper-2); }
.band--ink .card { background: var(--ink); }

.card__code { font-family: var(--mono); font-size: 0.67rem; letter-spacing: 0.15em; color: var(--red); }
.band--ink .card__code { color: var(--nonphoto); }
.card__title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.card__text { color: var(--graphite); font-size: 0.95rem; }
.band--ink .card__text { color: #9BA6A0; }

.card--link { text-decoration: none; transition: background 0.16s ease; }
.card--link:hover { background: var(--white); }
.band--ink .card--link:hover { background: var(--ink-2); }
.card__more {
  margin-top: auto;
  padding-top: 0.6rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--red);
}

/* ----------------------------------------------------------------- Prosa */

.prose { max-width: 68ch; }
.prose h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  margin: 2.2rem 0 0.7rem;
}
.prose h3:first-child { margin-top: 0; }

.ticklist { display: grid; gap: 0.85rem; }
.ticklist li {
  position: relative;
  padding-left: 1.6rem;
  color: var(--ink-2);
}
.ticklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.7rem;
  height: 1px;
  background: var(--red);
}
.band--ink .ticklist li { color: #C3CCC7; }
.band--ink .ticklist li::before { background: var(--nonphoto); }

/* ---------------------------------------------------------------- Fichas */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.deflist { border-top: 1px solid var(--rule); }
.deflist__row {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: 1.05rem;
  border-bottom: 1px solid var(--rule);
}
.deflist__key {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--graphite);
  padding-top: 0.2rem;
}
.deflist__val { color: var(--ink-2); }

/* --------------------------------------------------------------- Chips */

.chipgroup { margin-bottom: 2rem; }
.chipgroup:last-child { margin-bottom: 0; }
.chipgroup__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: 0.85rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  font-size: 0.86rem;
  padding: 0.34rem 0.72rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink-2);
}
.band--tint .chip { background: var(--paper); }

/* ---------------------------------------------------------------- Citas */

.pullquote {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.7vw, 2.1rem);
  letter-spacing: -0.03em;
  line-height: 1.18;
  max-width: 22ch;
}

/* --------------------------------------------------------------- Detalle */

.faq { border-top: 1px solid var(--rule); }
.faq__item { border-bottom: 1px solid var(--rule); }
.faq__q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.faq__sign { color: var(--red); font-family: var(--mono); flex-shrink: 0; }
.faq__a {
  display: none;
  padding-bottom: 1.35rem;
  color: var(--graphite);
  max-width: 62ch;
}
.faq__item.is-open .faq__a { display: block; }

/* ------------------------------------------------------------ Formulario */

.form { display: grid; gap: 1.15rem; }
.field { display: grid; gap: 0.4rem; }
.field__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--graphite);
}
.field__input,
.field__select,
.field__textarea {
  font-family: var(--body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.72rem 0.85rem;
  width: 100%;
}
.field__textarea { min-height: 8rem; resize: vertical; }
.field__input:focus,
.field__select:focus,
.field__textarea:focus { border-color: var(--ink); outline-offset: 1px; }
.field__hint { font-size: 0.85rem; color: var(--graphite); }

.formnote {
  font-size: 0.88rem;
  color: var(--graphite);
  border-left: 2px solid var(--red);
  padding-left: 0.9rem;
}

/* -------------------------------------------------------------- Pie */

.foot {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(3rem, 6vw, 4.5rem) 2rem;
}
.foot a { color: var(--paper); }
.foot__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: 3rem;
  border-bottom: 1px solid #2C3733;
}
.foot__claim {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}
.foot__label {
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nonphoto);
  margin-bottom: 1rem;
}
.foot__list { display: grid; gap: 0.55rem; font-size: 0.94rem; color: #C3CCC7; }
.foot__list a { text-decoration: none; }
.foot__list a:hover { text-decoration: underline; }
.foot__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  padding-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8B968F;
}

/* -------------------------------------------------------------- Revelado */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-in { opacity: 1; transform: none; }

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

@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .foot__grid { grid-template-columns: 1fr 1fr; }
  .dimstrip__list { grid-template-columns: repeat(2, 1fr); }
  .dimstrip__item:nth-child(3) { border-left: 0; }
  .dimstrip__item:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
}

@media (max-width: 760px) {
  .navtoggle { display: block; order: 3; }
  .nav {
    display: none;
    order: 4;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 1rem;
  }
  .masthead__inner { flex-wrap: wrap; }
  .nav.is-open { display: flex; }
  .nav__link {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--rule-soft);
    font-size: 1rem;
  }
  .schedule__row { grid-template-columns: 1fr; gap: 0.5rem; }
  .schedule__code { padding-top: 0; }
  .deflist__row { grid-template-columns: 1fr; gap: 0.35rem; }
  .foot__grid { grid-template-columns: 1fr; }
}

@media (max-width: 460px) {
  .dimstrip__list { grid-template-columns: 1fr; }
  .dimstrip__item { border-left: 0; border-bottom: 1px solid var(--rule); }
  .dimstrip__item:last-child { border-bottom: 0; }
}

/* --------------------------------------------------- Movimiento reducido */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* -------------------------------------------------------------- Impresión */

@media print {
  .masthead, .navtoggle, .langswitch, .actions { display: none; }
  body { background: #fff; color: #000; }
  .band { padding-block: 1.5rem; }
}