/* ============================================================
   AETY — sistema visual
   Dirección: ingeniería de procesos. Plano técnico, no folleto.
   ============================================================ */

:root {
  /* superficie */
  --ink:        #0C0B0A;
  --ink-2:      #141210;
  --ink-3:      #1D1A17;
  --line:       #2C2723;
  --line-soft:  #211E1A;

  /* tinta */
  --paper:      #EFE9E0;
  --paper-dim:  #A39A8E;
  --paper-mute: #6E665C;

  /* señal */
  --signal:     #FF5A1F;
  --signal-dim: #C13F0E;
  --signal-glow: rgba(255, 90, 31, .16);
  --live:       #6FCF97;

  /* tipografía */
  --display: "Bricolage Grotesque", "Arial Black", sans-serif;
  --body:    "Newsreader", Georgia, serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  /* métrica */
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --rule: 1px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-size: clamp(1rem, .96rem + .2vw, 1.12rem);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* grano + retícula: atmósfera de plano técnico ------------------ */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: .038;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) var(--rule), transparent var(--rule)),
    linear-gradient(to bottom, var(--line-soft) var(--rule), transparent var(--rule));
  background-size: 96px 96px;
  mask-image: radial-gradient(ellipse 110% 80% at 50% 0%, #000 20%, transparent 78%);
}

/* tipografía base ---------------------------------------------- */
h1, h2, h3 {
  font-family: var(--display);
  font-weight: 800;
  line-height: .92;
  letter-spacing: -.035em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 1.1em; text-wrap: pretty; }

a { color: inherit; }

.mono {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--paper-mute);
}

.shell {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

/* ===== barra superior ========================================= */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--ink) 82%, transparent);
  border-bottom: var(--rule) solid var(--line);
}

.topbar__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 62px;
}

.wordmark {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.32rem;
  letter-spacing: .1em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}

.wordmark i {
  width: 7px; height: 7px;
  background: var(--signal);
  display: block;
  border-radius: 1px;
  box-shadow: 0 0 0 4px var(--signal-glow);
}

.topnav { display: flex; gap: 1.6rem; align-items: center; }

.topnav a {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--paper-dim);
  transition: color .25s;
}

.topnav a:hover { color: var(--signal); }

@media (max-width: 720px) {
  .topnav a:not(.topnav__cta) { display: none; }
}

.topnav__cta {
  color: var(--paper) !important;
  border: var(--rule) solid var(--line);
  padding: .5rem .85rem;
}

.topnav__cta:hover {
  border-color: var(--signal);
  color: var(--signal) !important;
}

/* ===== hero =================================================== */
.hero {
  padding: clamp(4rem, 13vh, 9rem) 0 clamp(3rem, 8vh, 6rem);
  border-bottom: var(--rule) solid var(--line);
  position: relative;
}

.hero__tag {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin-bottom: clamp(2rem, 6vh, 3.5rem);
  animation: rise .8s cubic-bezier(.2,.7,.3,1) both;
}

.dot-live {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 0 rgba(111,207,151,.5);
  animation: pulse 2.6s infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(111,207,151,.45); }
  70%  { box-shadow: 0 0 0 9px rgba(111,207,151,0); }
  100% { box-shadow: 0 0 0 0 rgba(111,207,151,0); }
}

.hero__type {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(4.5rem, 20vw, 17rem);
  line-height: .78;
  letter-spacing: -.055em;
  margin: 0;
  display: block;
}

.hero__type span {
  display: inline-block;
  animation: rise .9s cubic-bezier(.2,.7,.3,1) both;
}

.hero__type span:nth-child(1) { animation-delay: .06s; }
.hero__type span:nth-child(2) { animation-delay: .13s; }
.hero__type span:nth-child(3) { animation-delay: .2s; }
.hero__type span:nth-child(4) { animation-delay: .27s; color: var(--signal); }

@keyframes rise {
  from { opacity: 0; transform: translateY(1.1em); }
  to   { opacity: 1; transform: none; }
}

.hero__expand {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--rule) solid var(--line);
  margin-top: clamp(2rem, 5vh, 3.2rem);
  animation: rise 1s cubic-bezier(.2,.7,.3,1) .4s both;
}

.hero__expand div {
  background: var(--ink);
  padding: 1.15rem 1.1rem 1.25rem;
}

.hero__expand b {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: -.02em;
  display: block;
  margin-bottom: .1rem;
}

.hero__expand b em {
  font-style: normal;
  color: var(--signal);
}

.hero__expand small {
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--paper-mute);
}

.hero__lede {
  margin-top: clamp(2.4rem, 6vh, 3.6rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: start;
  animation: rise 1s cubic-bezier(.2,.7,.3,1) .55s both;
}

@media (max-width: 860px) {
  .hero__lede { grid-template-columns: 1fr; }
}

.hero__claim {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  line-height: 1.02;
  letter-spacing: -.035em;
}

.hero__claim em {
  font-style: normal;
  color: var(--signal);
}

.hero__text { color: var(--paper-dim); max-width: 52ch; }
.hero__text strong { color: var(--paper); font-weight: 600; }

/* ===== secciones ============================================== */
.band {
  padding: clamp(3.5rem, 11vh, 7rem) 0;
  border-bottom: var(--rule) solid var(--line);
}

.band__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: clamp(2rem, 5vh, 3.2rem);
  padding-bottom: 1rem;
  border-bottom: var(--rule) solid var(--line);
}

.band__head h2 {
  font-size: clamp(1.9rem, 4.6vw, 3.4rem);
}

.band__head h2 em { font-style: normal; color: var(--signal); }

/* el ciclo ----------------------------------------------------- */
.cycle {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(178px, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--rule) solid var(--line);
}

.step {
  background: var(--ink-2);
  padding: 1.5rem 1.25rem 1.7rem;
  position: relative;
  transition: background .35s ease;
}

.step:hover { background: var(--ink-3); }

.step__n {
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .2em;
  color: var(--signal);
  display: block;
  margin-bottom: 1.4rem;
}

.step h3 {
  font-size: 1.24rem;
  margin-bottom: .5rem;
}

.step p {
  font-size: .92rem;
  color: var(--paper-dim);
  margin: 0;
  line-height: 1.5;
}

.step::after {
  content: "";
  position: absolute;
  left: 1.25rem;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--signal);
  transition: width .45s cubic-bezier(.2,.7,.3,1);
}

.step:hover::after { width: calc(100% - 2.5rem); }

/* primitivos --------------------------------------------------- */
.prim {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
}

.prim__card {
  border: var(--rule) solid var(--line);
  padding: 1.7rem 1.5rem 1.8rem;
  background:
    linear-gradient(160deg, var(--ink-2), var(--ink));
  position: relative;
  overflow: hidden;
}

.prim__card::before {
  content: "";
  position: absolute;
  top: -40%; right: -30%;
  width: 70%; aspect-ratio: 1;
  background: radial-gradient(circle, var(--signal-glow), transparent 68%);
  pointer-events: none;
}

.prim__card h3 {
  font-size: 1.7rem;
  margin-bottom: .7rem;
}

.prim__card p { color: var(--paper-dim); margin: 0; font-size: .96rem; }

.prim__card .mono { display: block; margin-bottom: 1.1rem; }

/* dos columnas: sí / no ---------------------------------------- */
.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--rule) solid var(--line);
}

.split > div { background: var(--ink); padding: clamp(1.5rem, 3vw, 2.4rem); }

.split h3 { font-size: 1.4rem; margin-bottom: 1.2rem; }

.split ul { list-style: none; margin: 0; padding: 0; }

.split li {
  padding: .8rem 0 .8rem 1.7rem;
  border-top: var(--rule) solid var(--line-soft);
  position: relative;
  color: var(--paper-dim);
  font-size: .97rem;
}

.split li::before {
  position: absolute;
  left: 0;
  font-family: var(--mono);
  font-size: .8rem;
}

.split--yes li::before { content: "+"; color: var(--signal); }
.split--no  li::before { content: "\2212"; color: var(--paper-mute); }

/* cifras ------------------------------------------------------- */
.figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--rule) solid var(--line);
}

.fig { background: var(--ink-2); padding: 1.8rem 1.4rem; }

.fig b {
  font-family: var(--display);
  font-size: clamp(2.6rem, 6vw, 3.9rem);
  line-height: .85;
  letter-spacing: -.05em;
  display: block;
  color: var(--signal);
  margin-bottom: .7rem;
}

.fig span { color: var(--paper-dim); font-size: .93rem; display: block; }

/* contacto ----------------------------------------------------- */
.contact { padding: clamp(4rem, 12vh, 8rem) 0; }

.contact h2 {
  font-size: clamp(2.2rem, 7vw, 5rem);
  margin-bottom: 1.4rem;
}

.contact p { color: var(--paper-dim); max-width: 46ch; }

.maillist {
  margin-top: 2.6rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--rule) solid var(--line);
}

.maillist a {
  background: var(--ink-2);
  padding: 1.3rem 1.3rem 1.5rem;
  text-decoration: none;
  display: block;
  transition: background .3s, color .3s;
}

.maillist a:hover { background: var(--signal); color: var(--ink); }
.maillist a:hover .mono { color: var(--ink); }

.maillist b {
  font-family: var(--mono);
  font-size: .94rem;
  letter-spacing: -.01em;
  display: block;
  margin-top: .8rem;
  text-transform: none;
}

/* pie ---------------------------------------------------------- */
.foot {
  border-top: var(--rule) solid var(--line);
  padding: 2.4rem 0 3.2rem;
}

.foot__in {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: baseline;
}

.foot a { color: var(--paper-dim); text-decoration: none; transition: color .25s; }
.foot a:hover { color: var(--signal); }
.foot nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }

/* ============================================================
   Documento legal
   ============================================================ */
.doc {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  padding: clamp(2.5rem, 7vh, 5rem) 0 6rem;
  align-items: start;
}

@media (max-width: 900px) {
  .doc { grid-template-columns: 1fr; }
  .doc__toc { position: static !important; border-bottom: var(--rule) solid var(--line); padding-bottom: 1.5rem; }
}

.doc__toc {
  position: sticky;
  top: 90px;
}

.doc__toc ol {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  counter-reset: t;
}

.doc__toc li { counter-increment: t; }

.doc__toc a {
  display: block;
  padding: .36rem 0;
  font-size: .84rem;
  color: var(--paper-mute);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: .8rem;
  transition: color .25s, border-color .25s;
}

.doc__toc a::before {
  content: counter(t) ". ";
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--line);
}

.doc__toc a:hover {
  color: var(--signal);
  border-left-color: var(--signal);
}

.doc__body { max-width: 68ch; }

.doc__body h1 {
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  margin-bottom: 1rem;
}

.doc__body h2 {
  font-size: 1.45rem;
  margin: 3.2rem 0 .9rem;
  padding-top: 1.4rem;
  border-top: var(--rule) solid var(--line);
  scroll-margin-top: 90px;
}

.doc__body h2:first-of-type { border-top: 0; padding-top: 0; }

.doc__body h3 {
  font-family: var(--body);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0;
  margin: 1.8rem 0 .6rem;
}

.doc__body p, .doc__body li { color: var(--paper-dim); }

.doc__body strong { color: var(--paper); font-weight: 600; }

.doc__body ul { padding-left: 1.1rem; margin: 0 0 1.2em; }
.doc__body li { margin-bottom: .45em; }

.doc__meta {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--paper-mute);
  padding-bottom: 1.6rem;
  margin-bottom: 2.2rem;
  border-bottom: var(--rule) solid var(--line);
}

.callout {
  border-left: 2px solid var(--signal);
  background: linear-gradient(90deg, var(--signal-glow), transparent 60%);
  padding: 1.1rem 1.3rem;
  margin: 1.8rem 0;
}

.callout p { margin: 0; color: var(--paper); font-size: .95rem; }

.holder {
  font-family: var(--mono);
  font-size: .82em;
  color: var(--signal);
  background: rgba(255,90,31,.09);
  border: 1px dashed var(--signal-dim);
  padding: .05em .4em;
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}