:root {
  /* Tokens principales: si querés cambiar la identidad visual, empezá por acá. */
  --rack-black: #081014;
  --rack-ink: #0d171c;
  --panel-steel: #122027;
  --panel-lift: #172932;
  --doc-white: #f5f8f7;
  --doc-soft: #c6d3d1;
  --doc-muted: #879996;
  --link-green: #45e0b8;
  --server-blue: #4ca3ff;
  --alert-amber: #f0c15d;
  --border-soft: rgba(214, 239, 235, 0.12);
  --border-strong: rgba(69, 224, 184, 0.34);
  --control-bg: rgba(245, 248, 247, 0.06);
  --control-border: rgba(245, 248, 247, 0.16);
  --shadow-panel: 0 24px 70px rgba(0, 0, 0, 0.34);
  --radius-card: 8px;
  --radius-control: 6px;
  --space: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--doc-white);
  background: var(--rack-black);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  /* La grilla suave remite a planos de red y documentacion tecnica. */
  background:
    linear-gradient(90deg, rgba(69, 224, 184, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(69, 224, 184, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 80% 10%, rgba(76, 163, 255, 0.16), transparent 32rem),
    var(--rack-black);
  background-size: 56px 56px, 56px 56px, auto, auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--space) * 3);
  padding: calc(var(--space) * 2) clamp(16px, 4vw, 56px);
  border-bottom: 1px solid var(--border-soft);
  background: rgba(8, 16, 20, 0.84);
  backdrop-filter: blur(18px);
}

.brand img {
  display: block;
  width: clamp(170px, 20vw, 245px);
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 3);
  color: var(--doc-soft);
  font-size: 0.95rem;
}

.nav a,
.header-action,
.primary-button,
.secondary-button {
  border-radius: var(--radius-control);
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.nav a:hover {
  color: var(--link-green);
}

.header-action,
.primary-button {
  border: 1px solid rgba(69, 224, 184, 0.44);
  background: rgba(69, 224, 184, 0.12);
  color: var(--doc-white);
}

.header-action {
  padding: 10px 14px;
  font-weight: 700;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  font-weight: 800;
}

.primary-button:hover,
.header-action:hover {
  transform: translateY(-1px);
  background: rgba(69, 224, 184, 0.2);
}

.secondary-button {
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  color: var(--doc-soft);
}

.secondary-button:hover {
  border-color: var(--border-strong);
  color: var(--doc-white);
}

.section-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(320px, 0.75fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
  min-height: calc(100svh - 78px);
  padding: clamp(56px, 8vw, 96px) 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--link-green);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(2.55rem, 6.6vw, 5.8rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.18rem;
}

.hero-lead,
.method-text,
.contact p {
  max-width: 680px;
  color: var(--doc-soft);
  font-size: clamp(1.04rem, 1.6vw, 1.22rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.ops-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, var(--panel-lift), var(--panel-steel));
  box-shadow: var(--shadow-panel);
}

.ops-panel::before {
  /* Capa de lectura tecnica: lineas finas sin convertir el fondo en decoracion pesada. */
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent, rgba(69, 224, 184, 0.12), transparent),
    repeating-linear-gradient(0deg, rgba(245, 248, 247, 0.035) 0 1px, transparent 1px 18px);
  pointer-events: none;
}

.panel-topline {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--doc-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
}

.panel-topline strong {
  color: var(--link-green);
}

.diagnostic-line {
  position: relative;
  display: grid;
  gap: 18px;
  padding: 28px 24px 18px;
}

.node {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--doc-soft);
  font-weight: 800;
}

.node-dot {
  width: 14px;
  height: 14px;
  border: 2px solid var(--link-green);
  border-radius: 999px;
  background: rgba(69, 224, 184, 0.18);
  box-shadow: 0 0 0 8px rgba(69, 224, 184, 0.06);
  animation: pulse 1.8s ease-in-out infinite;
}

.terminal-card {
  position: relative;
  display: grid;
  gap: 8px;
  margin: 12px 16px 16px;
  padding: 18px;
  border: 1px solid rgba(69, 224, 184, 0.2);
  border-radius: var(--radius-card);
  background: rgba(8, 16, 20, 0.58);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

.terminal-card span {
  color: var(--alert-amber);
  font-size: 0.82rem;
}

.terminal-card strong {
  color: var(--doc-white);
  line-height: 1.45;
}

.services {
  padding: 40px 0 88px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 32px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.service-card {
  min-height: 260px;
  padding: 22px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: rgba(18, 32, 39, 0.76);
}

.service-icon {
  display: inline-grid;
  width: 42px;
  height: 42px;
  margin-bottom: 24px;
  place-items: center;
  border: 1px solid rgba(69, 224, 184, 0.2);
  border-radius: var(--radius-control);
  color: var(--link-green);
  background: rgba(69, 224, 184, 0.08);
}

.icon {
  width: 22px;
  height: 22px;
}

.service-card p {
  color: var(--doc-soft);
  line-height: 1.62;
}

.service-card code {
  display: inline-flex;
  margin-top: 8px;
  color: var(--alert-amber);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.84rem;
}

.method-band {
  padding: 86px 0;
  border-block: 1px solid var(--border-soft);
  background: rgba(245, 248, 247, 0.035);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.76fr);
  gap: clamp(32px, 5vw, 68px);
  align-items: start;
}

.process-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: rgba(18, 32, 39, 0.72);
}

.process-list span {
  color: var(--server-blue);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-weight: 800;
}

.process-list p {
  margin: 0;
  color: var(--doc-soft);
  line-height: 1.55;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
  padding: 88px 0;
}

.contact-info {
  display: grid;
  gap: 24px;
}

.contact-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: var(--doc-white);
  color: var(--rack-ink);
}

.contact-card img {
  width: min(100%, 280px);
  height: auto;
}

.contact-card a {
  font-weight: 900;
  color: #0a6f5e;
  overflow-wrap: anywhere;
}

.contact-card span {
  color: #53615f;
  overflow-wrap: anywhere;
}

/* Formulario de Contacto Premium */
.contact-form-container {
  padding: 32px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, var(--panel-lift), var(--panel-steel));
  box-shadow: var(--shadow-panel);
  position: relative;
  overflow: hidden;
}

.contact-form-container::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(245, 248, 247, 0.015) 0 1px, transparent 1px 18px);
  pointer-events: none;
}

.contact-form {
  position: relative;
  display: grid;
  gap: 20px;
  z-index: 1;
}

.form-group {
  display: grid;
  gap: 8px;
}

.form-group label {
  color: var(--doc-soft);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--control-border);
  border-radius: var(--radius-control);
  background: rgba(245, 248, 247, 0.04);
  color: var(--doc-white);
  font-family: inherit;
  font-size: 0.96rem;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.form-group input:hover,
.form-group textarea:hover {
  background: rgba(245, 248, 247, 0.06);
  border-color: rgba(245, 248, 247, 0.28);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  background: rgba(245, 248, 247, 0.08);
  border-color: var(--link-green);
  box-shadow: 0 0 0 4px rgba(69, 224, 184, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Botón de envío */
.submit-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 24px;
  border: 1px solid rgba(69, 224, 184, 0.44);
  border-radius: var(--radius-control);
  background: rgba(69, 224, 184, 0.12);
  color: var(--doc-white);
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 800;
  cursor: pointer;
  transition: background 180ms ease, transform 180ms ease, border-color 180ms ease, opacity 180ms ease;
}

.submit-button:hover {
  transform: translateY(-1px);
  background: rgba(69, 224, 184, 0.2);
}

.submit-button:active {
  transform: translateY(0);
}

.submit-button:disabled {
  opacity: 0.64;
  cursor: not-allowed;
  transform: none;
  background: rgba(245, 248, 247, 0.08);
  border-color: var(--control-border);
}

/* Spinner de carga */
.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.24);
  border-top-color: var(--link-green);
  border-radius: 999px;
  animation: spin 0.8s linear infinite;
}

/* Notificación de feedback */
.form-feedback {
  padding: 14px 16px;
  border-radius: var(--radius-control);
  font-size: 0.92rem;
  line-height: 1.5;
  animation: fadeIn 0.24s ease-out;
}

.form-feedback.success {
  border: 1px solid rgba(69, 224, 184, 0.3);
  background: rgba(69, 224, 184, 0.08);
  color: var(--link-green);
}

.form-feedback.error {
  border: 1px solid rgba(240, 193, 93, 0.3);
  background: rgba(240, 193, 93, 0.08);
  color: var(--alert-amber);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

footer {
  padding: 24px 16px 36px;
  color: var(--doc-muted);
  text-align: center;
  border-top: 1px solid var(--border-soft);
}

@keyframes pulse {
  50% {
    transform: scale(1.08);
    box-shadow: 0 0 0 12px rgba(69, 224, 184, 0.025);
  }
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .hero,
  .method-layout,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-inline: 16px;
  }

  .header-action {
    display: none;
  }

  .brand img {
    width: 185px;
  }

  .nav {
    gap: 10px;
    font-size: 0.86rem;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: auto;
  }

  .process-list li {
    grid-template-columns: 38px 1fr;
  }
}