/* ==========================================================================
   Quantum Brothers — hoja de estilos
   Paleta: indigo profundo + azul eléctrico ("blue energy")
   Vanilla CSS. Sin dependencias. Mobile-first.
   ========================================================================== */

:root {
  /* Marca */
  --indigo-950: #0a0a23;
  --indigo-900: #12123a;
  --indigo-800: #1a1a4e;
  --indigo-700: #242468;
  --indigo-600: #2f2f86;
  --blue-600: #2f6bff;   /* azul eléctrico principal */
  --blue-500: #3b82f6;
  --blue-400: #5b9dff;
  --cyan-400: #22d3ee;   /* chispa "blue energy" */
  --cyan-300: #67e8f9;

  /* Neutros */
  --white: #ffffff;
  --ink-100: #eef1fb;
  --ink-300: #c3c9e8;
  --ink-400: #9aa2ce;
  --muted: #8b93c2;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.18);

  /* Superficies */
  --bg: var(--indigo-950);
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);

  /* Tipografía */
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Inter", system-ui, sans-serif;

  /* Métricas */
  --maxw: 1120px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px rgba(47, 107, 255, 0.35), 0 18px 50px -12px rgba(47, 107, 255, 0.45);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

@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 {
  margin: 0;
  font-family: var(--font);
  color: var(--ink-100);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Fondo con energía azul: gradientes radiales sutiles + rejilla fina */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 600px at 12% -8%, rgba(47, 107, 255, 0.22), transparent 60%),
    radial-gradient(900px 520px at 105% 8%, rgba(34, 211, 238, 0.14), transparent 58%),
    radial-gradient(1000px 700px at 50% 118%, rgba(36, 36, 104, 0.55), transparent 60%),
    var(--indigo-950);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(80% 60% at 50% 0%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(80% 60% at 50% 0%, #000 30%, transparent 100%);
  pointer-events: none;
}

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

a { color: var(--blue-400); text-decoration: none; }
a:hover { color: var(--cyan-300); }

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 0.5em; font-weight: 700; }
p { margin: 0 0 1em; }

/* Accesibilidad: foco visible + skip link ------------------------------- */
:focus-visible {
  outline: 3px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  background: var(--blue-600);
  color: var(--white);
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; color: var(--white); }

.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;
}

/* Layout ---------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

section { padding: clamp(56px, 9vw, 112px) 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-300);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--cyan-400), transparent);
}

.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
.section-head p { color: var(--ink-300); font-size: 1.05rem; margin: 0; }

/* Botones --------------------------------------------------------------- */
.btn {
  --_bg: var(--blue-600);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  font: inherit;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--white);
  background: var(--_bg);
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); color: var(--white); box-shadow: var(--shadow-glow); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: linear-gradient(135deg, var(--blue-600), var(--indigo-600));
  box-shadow: 0 10px 30px -10px rgba(47, 107, 255, 0.6);
}
.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-100);
}
.btn--ghost:hover { background: var(--surface-2); border-color: var(--blue-400); }

.btn--wa {
  background: #1faa54;
  box-shadow: 0 10px 30px -12px rgba(31, 170, 84, 0.6);
}
.btn--wa:hover { background: #23c061; }

.btn--sm { padding: 9px 16px; font-size: 0.9rem; }

/* Nav ------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(10, 10, 35, 0.62);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 68px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.12rem;
  color: var(--white);
}
.wordmark:hover { color: var(--white); }
.wordmark__mark { width: 30px; height: 30px; flex: 0 0 auto; }
.wordmark strong { font-weight: 800; }
.wordmark span { color: var(--blue-400); font-weight: 600; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav__links a.nav-link {
  color: var(--ink-300);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav__links a.nav-link:hover { color: var(--white); }

.nav__cta { display: flex; align-items: center; gap: 12px; }

@media (max-width: 760px) {
  .nav__links .nav-link { display: none; }
}

/* Hero ------------------------------------------------------------------ */
.hero { padding-top: clamp(56px, 8vw, 96px); padding-bottom: clamp(48px, 7vw, 80px); }
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 5.6vw, 3.7rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--blue-400) 0%, var(--cyan-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  color: var(--ink-300);
  max-width: 34ch;
  margin-bottom: 30px;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  color: var(--muted);
  font-size: 0.9rem;
}
.hero__meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero__meta span::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 10px 1px var(--cyan-400);
}

/* Panel visual del hero (SVG orbital) */
.hero__art {
  position: relative;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
}
.hero__art-card {
  width: 100%;
  border-radius: 22px;
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(47, 107, 255, 0.18), transparent 55%),
    var(--surface);
  box-shadow: var(--shadow);
  padding: 28px;
  overflow: hidden;
}
.orbit-svg { width: 100%; height: auto; }

@keyframes spin { to { transform: rotate(360deg); } }
.orbit-svg .ring { transform-origin: 130px 130px; }
.orbit-svg .ring--1 { animation: spin 26s linear infinite; }
.orbit-svg .ring--2 { animation: spin 18s linear infinite reverse; }
.orbit-svg .ring--3 { animation: spin 34s linear infinite; }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__art { max-width: 420px; margin-inline: auto; order: -1; }
  .hero__lead { max-width: none; }
}

/* Services -------------------------------------------------------------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400));
  opacity: 0.75;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--surface-2);
}
.card__num {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue-400);
  margin-bottom: 14px;
}
.card__icon {
  width: 46px; height: 46px;
  margin-bottom: 18px;
  color: var(--cyan-300);
}
.card h3 { font-size: 1.3rem; }
.card__desc { color: var(--ink-300); font-size: 0.98rem; }
.card__label {
  margin-top: auto;
  padding-top: 18px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.card ul {
  list-style: none;
  margin: 8px 0 6px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.card li {
  position: relative;
  padding-left: 26px;
  font-size: 0.94rem;
  color: var(--ink-100);
}
.card li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 14px; height: 14px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-400));
  box-shadow: 0 0 10px -2px var(--blue-500);
}

@media (max-width: 900px) {
  .services__grid { grid-template-columns: 1fr; }
}

/* Proof band ------------------------------------------------------------ */
.proof {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(47, 107, 255, 0.06), transparent);
}
.proof__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.proof__item {
  padding: 20px 4px;
}
.proof__item h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.proof__item h3 svg { width: 22px; height: 22px; color: var(--cyan-300); flex: 0 0 auto; }
.proof__item p { color: var(--ink-400); font-size: 0.92rem; margin: 0; }

@media (max-width: 820px) {
  .proof__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .proof__grid { grid-template-columns: 1fr; }
}

/* Lead form ------------------------------------------------------------- */
.contact__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(32px, 5vw, 60px);
  align-items: start;
}
.contact__aside h2 { font-size: clamp(1.8rem, 3.8vw, 2.6rem); }
.contact__aside p { color: var(--ink-300); }
.contact__aside .whatsapp-line {
  margin-top: 26px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.contact__aside .whatsapp-line span { color: var(--ink-300); font-size: 0.94rem; }

.form-card {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 38px);
  box-shadow: var(--shadow);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink-100);
}
.field .req { color: var(--cyan-300); }
.field input,
.field select,
.field textarea {
  font: inherit;
  font-size: 0.98rem;
  color: var(--white);
  background: rgba(10, 10, 35, 0.55);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
  width: 100%;
}
.field textarea { resize: vertical; min-height: 108px; }
.field input::placeholder,
.field textarea::placeholder { color: var(--muted); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.28);
}
.field select { appearance: none; -webkit-appearance: none; cursor: pointer; }

/* Consentimiento Ley 1581 */
.consent {
  grid-column: 1 / -1;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(10, 10, 35, 0.4);
}
.consent input[type="checkbox"] {
  width: 20px; height: 20px;
  margin-top: 2px;
  flex: 0 0 auto;
  accent-color: var(--blue-600);
  cursor: pointer;
}
.consent label { font-size: 0.86rem; color: var(--ink-300); line-height: 1.5; font-weight: 400; }

/* Honeypot anti-spam (oculto a humanos) */
.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.form-note { font-size: 0.82rem; color: var(--muted); margin: 0; }

@media (max-width: 620px) {
  .form-grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
}

/* Footer ---------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 40px;
  color: var(--ink-400);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: center;
}
.footer__links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer__links a { color: var(--ink-300); font-size: 0.92rem; }
.footer__links a:hover { color: var(--white); }
.footer small { color: var(--muted); font-size: 0.85rem; }
.footer__brand { display: flex; align-items: center; gap: 10px; }

/* Páginas de contenido (gracias / privacidad) --------------------------- */
.page {
  min-height: 60vh;
  padding: clamp(64px, 10vw, 120px) 0;
}
.page__narrow { max-width: 760px; }
.page h1 { font-size: clamp(2rem, 5vw, 3rem); }
.page h2 { font-size: 1.4rem; margin-top: 2em; }
.page p, .page li { color: var(--ink-300); }
.page ul { padding-left: 1.2em; }
.page li { margin-bottom: 0.5em; }
.page .lede { font-size: 1.15rem; color: var(--ink-100); }

.thanks-card {
  max-width: 620px;
  margin-inline: auto;
  text-align: center;
  padding: clamp(32px, 6vw, 56px);
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.thanks-check {
  width: 76px; height: 76px;
  margin: 0 auto 24px;
  color: var(--cyan-300);
}
.thanks-actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}