/* =========================================================================
   aherrera.tech — hoja de estilos única
   Oscuro primario. Base slate, acento cian, CTA ámbar.
   ========================================================================= */

:root {
  --bg:        #0A0F1C;
  --bg-elev:   #0F1728;
  --surface:   #131F38;
  --surface-2: #17253f;
  --border:    #25324e;
  --border-hi: #35507a;

  --text:      #E7ECF6;
  --text-dim:  #93A0B6;
  --text-mute: #62708a;

  --accent:      #38E1D3;
  --accent-soft: rgba(56, 225, 211, 0.14);
  --accent-ink:  #04211e;
  --cta:         #F5A524;
  --cta-hi:      #ffb63f;
  --cta-ink:     #2a1a00;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --maxw: 1140px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;

  --s-1: 8px;  --s-2: 16px;  --s-3: 24px;  --s-4: 40px;
  --s-5: 64px; --s-6: 96px;  --s-7: 140px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

@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;
  }
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { max-width: 100%; }

/* Los items de grid/flex no deben crecer por su contenido más angosto */
.hero > *, .contact > *, .cards > *, .case__grid > *,
.principles > *, .section__head, .section-body { min-width: 0; }

h1, h2, h3, p, li, a { overflow-wrap: break-word; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3 { line-height: 1.15; font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.1rem, 5.4vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h3 { font-size: clamp(1.05rem, 1.6vw, 1.28rem); }

.visually-hidden, .field--hp {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed;
  top: -60px; left: 12px;
  z-index: 999;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; text-decoration: none; }

/* ---- Fondo ambiental ---------------------------------------------------- */
#ambient {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  opacity: 0.5;
  pointer-events: none;
}

/* ---- Contenedores ----------------------------------------------------- */
.site-header, main, .site-footer { position: relative; z-index: 1; }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--s-6) var(--gutter);
}
.section__head { max-width: 640px; margin-bottom: var(--s-4); }
.section__tag {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: var(--s-2);
}
.section__intro { color: var(--text-dim); margin-top: var(--s-2); font-size: 1.05rem; }

/* ---- Header ---------------------------------------------------------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--s-3) var(--gutter);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-family: var(--font-mono);
  font-weight: 500;
}
.brand:hover { text-decoration: none; }
.brand__mark { color: var(--accent); display: inline-flex; }
.brand__dim { color: var(--text-mute); }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 30px);
  font-size: 0.95rem;
}
.site-nav a { color: var(--text-dim); }
.site-nav a:hover { color: var(--text); text-decoration: none; }
.site-nav__cta {
  color: var(--accent) !important;
  border: 1px solid var(--border-hi);
  padding: 7px 16px;
  border-radius: 999px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.site-nav__cta:hover { background: var(--accent-soft); border-color: var(--accent); }

@media (max-width: 620px) {
  .site-header { gap: 12px; }
  .site-nav a:not(.site-nav__cta) { display: none; }
  .brand__text { font-size: 0.95rem; }
  .site-nav__cta { padding: 6px 13px; font-size: 0.9rem; white-space: nowrap; }
}

/* ---- Botones -------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 13px 24px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease),
              border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--primary {
  background: var(--cta);
  color: var(--cta-ink);
  box-shadow: 0 8px 30px -10px rgba(245, 165, 36, 0.6);
}
.btn--primary:hover { background: var(--cta-hi); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-hi);
}
.btn--ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

/* ---- Hero ---------------------------------------------------------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--s-5) var(--gutter) var(--s-6);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: clamp(24px, 5vw, 72px);
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 0.03em;
  margin-bottom: var(--s-3);
}
.kicker__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(56, 225, 211, 0.5); }
  70%  { box-shadow: 0 0 0 12px rgba(56, 225, 211, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 225, 211, 0); }
}
.hero__lead {
  color: var(--text-dim);
  font-size: 1.12rem;
  margin: var(--s-3) 0 var(--s-4);
  max-width: min(46ch, 100%);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--s-2); }

/* ---- Topología (SVG) --------------------------------------------- */
.topology { position: relative; }
.topology__svg {
  width: 100%;
  height: auto;
  overflow: visible;
  color: var(--border-hi);
}
.topology__edges .edge {
  stroke: var(--accent);
  stroke-width: 1.3;
  stroke-dasharray: 4 6;
  opacity: 0.55;
  animation: dash 22s linear infinite;
}
.topology__edges .edge--faint { stroke: var(--border-hi); opacity: 0.5; stroke-dasharray: 2 8; }
@keyframes dash { to { stroke-dashoffset: -200; } }

.packet { fill: var(--accent); filter: drop-shadow(0 0 5px var(--accent)); }
.packet--1 { offset-path: path("M400,240 L150,120"); animation: flow 3.4s linear infinite; }
.packet--2 { offset-path: path("M400,240 L400,86");  animation: flow 2.8s linear infinite 0.6s; }
.packet--3 { offset-path: path("M400,240 L650,120"); animation: flow 3.1s linear infinite 1.1s; }
.packet--4 { offset-path: path("M400,240 L650,360"); animation: flow 3.6s linear infinite 0.3s; }
.packet--5 { offset-path: path("M400,240 L400,394"); animation: flow 2.6s linear infinite 1.4s; }
.packet--6 { offset-path: path("M400,240 L150,360"); animation: flow 3.3s linear infinite 0.9s; }
@keyframes flow {
  0%   { offset-distance: 0%;   opacity: 0; }
  12%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .packet { display: none; }
  .topology__edges .edge { animation: none; }
}

.node { cursor: pointer; }
.node__box {
  fill: var(--surface);
  stroke: var(--border-hi);
  stroke-width: 1.2;
  transition: fill 0.2s var(--ease), stroke 0.2s var(--ease);
}
.node__label {
  fill: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  text-anchor: middle;
  dominant-baseline: middle;
}
.node__meta {
  fill: var(--text-mute);
  font-family: var(--font-mono);
  font-size: 9.5px;
  text-anchor: middle;
  dominant-baseline: middle;
}
.node__glow { opacity: 0; transition: opacity 0.25s var(--ease); }
.node:hover .node__box,
.node:focus-visible .node__box { fill: var(--surface-2); stroke: var(--accent); }
.node:hover .node__glow,
.node:focus-visible .node__glow { opacity: 1; }
.node:focus-visible { outline: none; }
.node--flag .node__box { stroke: var(--accent); stroke-dasharray: 3 3; }

.hub__ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.2;
  opacity: 0.5;
  animation: spin 26s linear infinite;
  stroke-dasharray: 6 8;
  transform-origin: center;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hub__core { fill: var(--accent); }
.hub__mono {
  fill: var(--accent-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  text-anchor: middle;
  dominant-baseline: middle;
}
.topology__hint {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-mute);
  text-align: center;
  margin-top: var(--s-2);
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: var(--s-4); }
  .topology { max-width: 520px; margin-inline: auto; }
}
@media (max-width: 560px) {
  .topology__svg, .topology__hint, #topology-caption { display: none; }
  .topology { display: grid; gap: 10px; width: 100%; max-width: 100%; }
}
/* Lista de servicios como respaldo del grafo en pantallas chicas */
.node-fallback {
  display: none;
}
@media (max-width: 560px) {
  .node-fallback {
    display: grid;
    gap: 10px;
  }
  .node-fallback a {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 10px;
    padding: 14px 16px;
  }
  .node-fallback a:hover { text-decoration: none; background: var(--surface-2); }
}

/* ---- Tarjetas de servicios ------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--s-3);
}
.card {
  background: linear-gradient(160deg, var(--bg-elev), var(--surface) 140%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-3) var(--s-3);
  scroll-margin-top: 90px;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.card:hover { border-color: var(--border-hi); transform: translateY(-3px); }
.card--accent { border-color: var(--border-hi); background: linear-gradient(160deg, #10233a, var(--surface) 140%); }
.card__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: var(--s-2); }
.card__idx {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
}
.card p { color: var(--text-dim); font-size: 0.97rem; }
.card__list {
  list-style: none;
  margin: var(--s-2) 0;
  display: grid;
  gap: 7px;
}
.card__list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-dim);
  font-size: 0.92rem;
}
.card__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}
.card__deliverable {
  margin-top: var(--s-2);
  padding-top: var(--s-2);
  border-top: 1px solid var(--border);
  font-size: 0.88rem !important;
}
.card__deliverable strong { color: var(--text); }

/* ---- Caso aLink-EBL ------------------------------------------ */
.section--case {
  max-width: none;
  background:
    radial-gradient(900px 400px at 80% 0%, rgba(56,225,211,0.08), transparent 70%),
    var(--bg-elev);
  border-block: 1px solid var(--border);
}
.case { max-width: var(--maxw); margin: 0 auto; padding-inline: 0; }
.case__intro { max-width: 640px; margin-bottom: var(--s-4); }
.case__tagline { color: var(--text-dim); font-size: 1.1rem; margin-top: var(--s-2); }
.case__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-3);
}
.case__block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-3);
}
.case__block h3 { color: var(--accent); font-family: var(--font-mono); font-size: 0.92rem; margin-bottom: 10px; letter-spacing: 0.03em; }
.case__block p { color: var(--text-dim); font-size: 0.95rem; }
.case__stack { list-style: none; display: grid; gap: 10px; }
.case__stack li { color: var(--text-dim); font-size: 0.92rem; }
.case__stack span {
  display: inline-block;
  min-width: 68px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mute);
  text-transform: uppercase;
}
.case__cta {
  margin-top: var(--s-4);
  font-size: 1.05rem;
  color: var(--text-dim);
}

/* ---- Principios / enfoque ----------------------------------- */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--s-3);
}
.principle {
  padding: var(--s-3);
  border-left: 2px solid var(--border-hi);
}
.principle__num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.82rem;
}
.principle h3 { margin: 10px 0 8px; }
.principle p { color: var(--text-dim); font-size: 0.94rem; }

/* ---- Contacto ---------------------------------------------- */
.section--contact {
  max-width: none;
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
}
.contact {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
.contact__intro p { color: var(--text-dim); margin-top: var(--s-2); }
.contact__direct {
  list-style: none;
  margin-top: var(--s-3);
  display: grid;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.contact__direct a { color: var(--text); }
.contact__direct a::before { content: "→ "; color: var(--accent); }

.contact__form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-3);
  display: grid;
  gap: var(--s-2);
}
.field { display: grid; gap: 6px; }
.field label { font-size: 0.85rem; color: var(--text-dim); font-family: var(--font-mono); }
.field input, .field textarea {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 11px 13px;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:user-invalid, .field textarea:user-invalid {
  border-color: #E06666;
}
.form-status { font-size: 0.9rem; min-height: 1.2em; font-family: var(--font-mono); }
.form-status[data-state="ok"]  { color: var(--accent); }
.form-status[data-state="err"] { color: #E88; }
.form-note { font-size: 0.9rem; color: var(--text-dim); }

@media (max-width: 820px) {
  .contact { grid-template-columns: 1fr; }
}

/* ---- Diálogo de nodo -------------------------------------- */
.node-dialog {
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  background: var(--bg-elev);
  color: var(--text);
  max-width: 540px;
  width: calc(100% - 32px);
  padding: var(--s-4) var(--s-3) var(--s-3);
}
.node-dialog::backdrop { background: rgba(4, 8, 16, 0.72); backdrop-filter: blur(3px); }
.node-dialog[open] { animation: dialogIn 0.3s var(--ease); }
@keyframes dialogIn { from { opacity: 0; transform: translateY(12px) scale(0.98); } }
.node-dialog__close {
  position: absolute;
  top: 10px; right: 12px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 6px;
}
.node-dialog__close:hover { color: var(--text); }
.node-dialog__body h3 { color: var(--accent); margin-bottom: var(--s-2); }
.node-dialog__body p { color: var(--text-dim); font-size: 0.96rem; margin-bottom: var(--s-2); }
.node-dialog__body ul { list-style: none; display: grid; gap: 7px; margin: var(--s-2) 0; }
.node-dialog__body li { position: relative; padding-left: 20px; color: var(--text-dim); font-size: 0.92rem; }
.node-dialog__body li::before { content: "▸"; position: absolute; left: 0; color: var(--accent); }
.node-dialog__body .card__deliverable { border-top: 1px solid var(--border); padding-top: var(--s-2); }
.node-dialog__cta { margin-top: var(--s-3); width: 100%; }

/* ---- Footer ---------------------------------------------- */
.site-footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--s-4) var(--gutter) var(--s-5);
  border-top: 1px solid var(--border);
  color: var(--text-mute);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-2);
}

/* ---- Reveal (GSAP mejora esto; sin JS queda visible) ---- */
.reveal { opacity: 1; }
.js .reveal { opacity: 0; transform: translateY(18px); }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; }
}

/* marcas TODO visibles solo en revisión local vía ?debug */
body.debug [data-todo] { outline: 1px dashed var(--cta); }
body.debug [data-todo]::after {
  content: " ⚠ " attr(data-todo);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cta);
}