/*
 * Ingeniería 4G v2.0 — sistema de marca iterativo
 * Manual de uso: MANUAL_MARCA_I4G.txt
 *
 * Cómo probar los 3 prototipos de referencia:
 * 1) Deja un solo bloque de paleta "ACTIVO" descomentado en :root.
 * 2) Recarga el navegador. Botones, textos, inputs y el canvas
 *    (js/fondo-red-neuronal.js) leen estas variables.
 *
 * Preset 1 = 1_ingeniería-4g---renovación-naranja-2026  (ACTIVO)
 * Preset 2 = 2_ingeniería-4g-naranja---fucsia
 * Preset 3 = 0_renovaci_n_futurista.html
 */

:root {
  /* ---------- PRESET 1 ACTIVO: renovación naranja 2026 ---------- */
  --color-fondo: #05070a;
  --color-superficie: #0f131d;
  --color-texto: #dfe2f1;
  --color-texto-suave: rgba(223, 226, 241, 0.72);
  --color-primario: #f59e0b;
  --color-secundario: #ef4444;
  --color-acento: #ffb95f;
  --color-exito: #34d399;
  --gradiente-marca: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --color-borde: rgba(255, 255, 255, 0.1);
  --color-glass: rgba(255, 255, 255, 0.03);

  /*
   * ---------- PRESET 2: naranja + fucsia (descomentar y comentar el Preset 1) ----------
   * --color-fondo: #05070a;
   * --color-superficie: #0f131d;
   * --color-texto: #dfe2f1;
   * --color-texto-suave: rgba(223, 226, 241, 0.72);
   * --color-primario: #f59e0b;
   * --color-secundario: #c026d3;
   * --color-acento: #a21caf;
   * --color-exito: #34d399;
   * --gradiente-marca: linear-gradient(135deg, #f59e0b 0%, #c026d3 50%, #a21caf 100%);
   * --color-borde: rgba(255, 255, 255, 0.1);
   * --color-glass: rgba(255, 255, 255, 0.03);
   */

  /*
   * ---------- PRESET 3: futurista cian-violeta (descomentar y comentar el Preset 1) ----------
   * --color-fondo: #0b0f19;
   * --color-superficie: #12182a;
   * --color-texto: #ffffff;
   * --color-texto-suave: rgba(255, 255, 255, 0.65);
   * --color-primario: #00f0ff;
   * --color-secundario: #8a2be2;
   * --color-acento: #7dd3fc;
   * --color-exito: #34d399;
   * --gradiente-marca: linear-gradient(90deg, #00f0ff, #8a2be2);
   * --color-borde: rgba(255, 255, 255, 0.08);
   * --color-glass: rgba(255, 255, 255, 0.03);
   */

  --font-heading: "Montserrat", sans-serif;
  --font-body: "Inter", sans-serif;

  --espacio-xs: 0.25rem;
  --espacio-sm: 0.5rem;
  --espacio-md: 1rem;
  --espacio-lg: 1.5rem;
  --espacio-xl: 2.5rem;
  --espacio-2xl: 4rem;

  --radio: 1rem;
  --radio-sm: 0.5rem;
  --radio-pill: 999px;

  --sombra-glass: 0 4px 30px rgba(0, 0, 0, 0.3);
  --sombra-glow: 0 8px 25px color-mix(in srgb, var(--color-primario) 35%, transparent);
  --sombra-panel-glow:
    0 0 35px color-mix(in srgb, var(--color-primario) 8%, transparent),
    0 8px 32px rgba(0, 0, 0, 0.37);

  --ancho-max: 70rem;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background-color: var(--color-fondo);
  color: var(--color-texto);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: 1.15;
  margin: 0 0 var(--espacio-md);
}

p {
  margin: 0 0 var(--espacio-md);
}

a {
  color: var(--color-primario);
  text-decoration: none;
}

a:hover {
  color: var(--color-acento);
}

#network-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.65;
}

.site-wrap {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  padding: var(--espacio-md) var(--espacio-lg);
  background: color-mix(in srgb, var(--color-fondo) 72%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-borde);
}

.site-header__inner {
  width: 100%;
  max-width: var(--ancho-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--espacio-md);
}

.brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.7rem;
}

.brand__iso {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: block;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.95rem;
  margin: 0;
  color: var(--color-texto);
}

.brand__tag {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-texto-suave);
}

.main {
  flex: 1;
  width: 100%;
  max-width: var(--ancho-max);
  margin: 0 auto;
  padding: var(--espacio-2xl) var(--espacio-lg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--espacio-xl);
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
  }
}

.badge-pulse {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radio-pill);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primario);
  border: 1px solid color-mix(in srgb, var(--color-primario) 35%, transparent);
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%,
  100% {
    opacity: 0.85;
  }
  50% {
    opacity: 1;
    box-shadow: 0 0 18px color-mix(in srgb, var(--color-primario) 25%, transparent);
  }
}

.hero-copy h1 {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-copy p {
  font-size: 1.05rem;
  color: var(--color-texto-suave);
  max-width: 36rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: var(--espacio-lg) 0 0;
  display: grid;
  gap: var(--espacio-sm);
  font-size: 0.95rem;
}

.contact-list span {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-texto-suave);
}

.text-gradient {
  background: var(--gradiente-marca);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.glass-panel {
  background: var(--color-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-borde);
  box-shadow: var(--sombra-glass);
  border-radius: calc(var(--radio) + 0.25rem);
}

.glass-panel-glow {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid color-mix(in srgb, var(--color-primario) 22%, transparent);
  box-shadow: var(--sombra-panel-glow);
}

.form-card {
  position: relative;
  overflow: hidden;
  padding: var(--espacio-xl);
}

.form-card__orb {
  position: absolute;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.22;
  pointer-events: none;
}

.form-card__orb--a {
  top: -3rem;
  right: -2rem;
  background: var(--color-secundario);
}

.form-card__orb--b {
  bottom: -3rem;
  left: -2rem;
  background: var(--color-primario);
}

.form-card h2 {
  position: relative;
  z-index: 1;
  font-size: 1.5rem;
}

.form-card > p {
  position: relative;
  z-index: 1;
  color: var(--color-texto-suave);
  font-size: 0.92rem;
}

.contact-form {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--espacio-md);
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field label {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--color-texto-suave);
}

.input-glass,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radio-sm);
  background: rgba(15, 19, 29, 0.65);
  border: 1px solid var(--color-borde);
  color: var(--color-texto);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.contact-form textarea {
  min-height: 6.5rem;
  resize: vertical;
}

.input-glass:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primario);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-primario) 25%, transparent);
  background: rgba(15, 19, 29, 0.9);
}

.hp-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.btn-gradient {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 0;
  border-radius: var(--radio-sm);
  background: var(--gradiente-marca);
  color: #0b0b0b;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn-gradient:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: var(--sombra-glow);
}

.btn-gradient:active {
  transform: translateY(0);
}

.btn-gradient:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.form-status {
  min-height: 1.4rem;
  font-size: 0.85rem;
  color: var(--color-texto-suave);
}

.form-status[data-tone="ok"] {
  color: var(--color-exito);
}

.form-status[data-tone="warn"] {
  color: var(--color-primario);
}

.form-status[data-tone="error"] {
  color: var(--color-secundario);
}

.form-success {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 2;
  padding: var(--espacio-xl);
  text-align: center;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: color-mix(in srgb, var(--color-fondo) 88%, transparent);
}

.form-success.is-visible {
  display: flex !important;
}

.btn-gradient--compact {
  max-width: 16rem;
  margin-top: var(--espacio-md);
}

.form-success h3 {
  margin-top: var(--espacio-md);
}

.site-footer {
  padding: var(--espacio-lg);
  border-top: 1px solid var(--color-borde);
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-texto-suave);
  background: color-mix(in srgb, var(--color-fondo) 80%, transparent);
}

.internal-page {
  max-width: 44rem;
}

.internal-page h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.internal-kicker {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primario);
  margin-bottom: var(--espacio-sm);
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-fondo);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--color-primario) 55%, transparent);
}