/* =========================================================================
   BlackOut Voices — hoja de estilos
   Reutiliza el sistema de diseño de blackoutsoundstudio.com (extraído de su CSS)
   Paleta monocroma "blackout" + único acento lavanda (#a9a9f0). Tipografía Lato.
   ========================================================================= */

/* ----- Tokens (idénticos a la web del estudio + extensiones para la landing) ----- */
:root {
  /* Paleta base del estudio */
  --primary-color: #2d2d2d;
  --secondary-color: #f8f9fa;
  --dark-bg: #1b1b1b;
  --muted: #cccccc;

  /* Único acento de marca */
  --accent: #a9a9f0;
  --accent-strong: #c4c4ff;

  /* Glassmorphism (tarjetas) */
  --card-bg: #ffffff0d;          /* blanco 5% */
  --card-border: #ffffff1a;      /* blanco 10% */
  --card-hover-bg: #ffffff1a;
  --card-hover-border: #bec0bf;

  /* Sombras / overlays */
  --boxshadow-color: #0000004d;
  --overlay-color: #000000a9;
  --gradient-start: #1b1b1b;
  --gradient-end: #12121200;

  /* Navegación */
  --nav-hover: #4242427e;
  --nav-responsive-bg: #0e0e0eef;

  /* Tipografía / medidas */
  --titulos: 2.5rem;
  --titulo: 3rem;
  --maxw: 1300px;
  --radius: 2px;                 /* esquinas casi rectas, firma del estudio */
}

/* ----- Reset ----- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: Lato, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--dark-bg);
  color: var(--secondary-color);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ----- Scrollbar a juego con el tema oscuro ----- */
html { scrollbar-width: thin; scrollbar-color: #3a3a3a #161616; }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: #161616; }
::-webkit-scrollbar-thumb {
  background: #3a3a3a;
  border-radius: 8px;
  border: 3px solid #161616; /* crea "padding" alrededor del thumb */
}
::-webkit-scrollbar-thumb:hover { background: #5a5a6e; }

/* Foco accesible coherente con la marca */
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ----- Utilidades ----- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.container--wide { max-width: 1600px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.accent { color: var(--accent); }
.muted { color: var(--muted); }
.center { text-align: center; }

/* Iconos de línea (Lucide) — tamaño heredado del contenedor vía 1em, color = currentColor */
.ic {
  width: 1em; height: 1em;
  display: inline-block;
  vertical-align: middle;
  stroke: currentColor;
  fill: none;
  flex: none;
}

/* Título de sección (idéntico al .sectiontitulo del estudio) */
.section-title {
  font-family: Montserrat, Lato, sans-serif;
  font-size: var(--titulos);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-align: center;
  position: relative;
  margin: 0 0 3rem;
}
.section-title::after {
  content: "";
  position: absolute;
  bottom: -12px; left: 50%;
  transform: translateX(-50%);
  width: 100px; height: 3px;
  background: var(--secondary-color);
}
.section-title .accent::after { background: var(--accent); }
.section-eyebrow {
  display: block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: .8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: .8rem;
}

section { padding: 6rem 0; }
.section-intro {
  max-width: 760px;
  margin: -1.5rem auto 3.5rem;
  text-align: center;
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--muted);
}

/* =========================================================================
   Botones
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: Lato, sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .3px;
  padding: .85rem 1.7rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #1b1b1b; }
.btn-primary:hover { background: var(--accent-strong); color: #1b1b1b; }
.btn-ghost {
  background: transparent;
  color: var(--secondary-color);
  border-color: var(--card-hover-border);
}
.btn-ghost:hover { background: var(--card-hover-bg); }
.btn-lg { padding: 1.05rem 2.2rem; font-size: 1.1rem; }
.btn-block { width: 100%; justify-content: center; }

/* =========================================================================
   Navegación (top, sticky; transparente sobre el hero → sólida al hacer scroll)
   Mantiene el comportamiento de color del estudio, en posición superior
   para optimizar conversión en una landing.
   ========================================================================= */
.nav {
  position: fixed; top: 0; left: 0;
  width: 100%; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: transparent;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
}
.nav.scrolled {
  background: var(--primary-color);
  box-shadow: 0 4px 20px var(--boxshadow-color);
  padding: .65rem 1.5rem;
}
.nav-brand { display: flex; align-items: center; gap: .65rem; text-decoration: none; }
.nav-brand img { height: 34px; width: auto; }
.nav-brand .sub {
  font-family: Lato, sans-serif;
  font-weight: 300;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-size: .85rem;
  color: var(--secondary-color);
  border-left: 1px solid #ffffff40;
  padding-left: .65rem;
}
.nav-links { display: flex; align-items: center; gap: .35rem; }
.nav-links a {
  color: var(--secondary-color);
  text-decoration: none;
  font-family: Lato, sans-serif;
  font-weight: 300;
  font-size: 1.05rem;
  padding: .5rem .9rem;
  border-radius: 1px;
  transition: background .3s, color .2s;
}
.nav-links a:hover { background: var(--nav-hover); }
.nav-links a.is-cta { margin-left: .4rem; }
.nav-right { display: flex; align-items: center; gap: .75rem; }

/* Selector de idioma (estructura lista para EN; por ahora ES) */
.lang-select {
  border: 1px solid var(--card-border);
  padding: .45rem .5rem;
  background: var(--card-bg);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  color: #fff;
  font-size: .9rem;
  cursor: pointer;
  border-radius: var(--radius);
}
.lang-select option { background: #000c; color: #fff; }

.nav-burger {
  display: none;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border-radius: var(--radius);
  width: 44px; height: 44px;
  cursor: pointer;
  position: relative;
}
.nav-burger span,
.nav-burger span::before,
.nav-burger span::after {
  content: ""; position: absolute;
  width: 22px; height: 2px; background: #fff;
  left: 50%; transform: translateX(-50%);
  transition: transform .3s ease, opacity .2s ease;
}
.nav-burger span { top: 50%; }
.nav-burger span::before { top: -7px; }
.nav-burger span::after { top: 7px; }
.nav-burger.open span { background: transparent; }
.nav-burger.open span::before { transform: translateX(-50%) translateY(7px) rotate(45deg); }
.nav-burger.open span::after  { transform: translateX(-50%) translateY(-7px) rotate(-45deg); }

/* =========================================================================
   Hero (a pantalla completa, oscuro, con motivo de onda de sonido)
   ========================================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 7rem 0 4rem;
}
.hero::before { /* viñeta + overlay, como el estudio */
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 50% 0%, #2a2a3a 0%, var(--dark-bg) 55%),
    var(--overlay-color);
  z-index: 0;
}
.hero-wave {
  position: absolute; left: 0; right: 0; bottom: 0;
  width: 100%; height: 42%;
  z-index: 1; opacity: .5;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 820px; }
.hero h1 {
  font-family: Lato, sans-serif;
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -.5px;
  margin-bottom: 1.4rem;
}
.hero p.lead {
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  font-weight: 300;
  color: #e7e7ea;
  max-width: 640px;
  margin-bottom: 2.2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-note {
  margin-top: 1.6rem;
  font-size: .92rem;
  font-weight: 300;
  color: var(--muted);
}
.hero-note a { color: var(--accent); text-decoration: none; }
.hero-note a:hover { text-decoration: underline; }

/* =========================================================================
   Tarjetas glassmorphism (servicios / propuestas de valor)
   ========================================================================= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.6rem;
  max-width: var(--maxw);
  margin: 0 auto;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 2rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform .3s ease, background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.card:hover {
  transform: translateY(-10px);
  background: var(--card-hover-bg);
  box-shadow: 0 10px 30px var(--boxshadow-color);
  border-color: var(--card-hover-border);
}
.card-icon {
  font-size: 2.1rem;
  color: var(--accent);
  display: inline-flex;
  margin-bottom: 1rem;
  padding: .7rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: #ffffff08;
  transition: transform .3s ease, border-color .3s ease;
}
.card:hover .card-icon { transform: translateY(-3px); border-color: var(--accent); }
.card h3 { font-size: 1.35rem; font-weight: 800; margin-bottom: .6rem; }
.card p { font-size: 1rem; font-weight: 300; color: var(--muted); }

/* =========================================================================
   Proceso (pasos numerados)
   ========================================================================= */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.6rem;
  max-width: var(--maxw);
  margin: 0 auto;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 2rem 1.6rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card-bg);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: Lato, sans-serif;
  font-weight: 900;
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: .7rem;
  line-height: 1;
}
.step h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: .45rem; }
.step p { font-size: .98rem; font-weight: 300; color: var(--muted); }

/* =========================================================================
   Sección "split" (texto + panel) p. ej. posicionamiento / pago 2 tramos
   ========================================================================= */
.split { background: var(--primary-color); }
.split .container { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center; }
.split h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.2rem;
}
.split p { font-weight: 300; color: #dcdce0; margin-bottom: 1rem; font-size: 1.08rem; }
.split .panel {
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
}
.payout { list-style: none; display: grid; gap: 1.2rem; }
.payout li { display: flex; gap: 1rem; align-items: flex-start; }
.payout .ico { font-size: 1.7rem; line-height: 1; color: var(--accent); flex: none; }
.payout h4 { font-size: 1.1rem; font-weight: 800; margin-bottom: .2rem; }
.payout p { font-size: .98rem; margin: 0; color: var(--muted); }

/* Lista de chips (casos de uso) */
.chips { display: flex; flex-wrap: wrap; gap: .7rem; justify-content: center; max-width: 900px; margin: 0 auto; }
.chip {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  border-radius: 999px;
  padding: .6rem 1.2rem;
  font-weight: 300;
  font-size: 1rem;
}
.chip strong { font-weight: 700; }

/* =========================================================================
   FAQ (acordeón nativo con <details>)
   ========================================================================= */
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 1rem; }
.faq details {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 0 1.4rem;
}
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 1.2rem 0;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 1.6rem; font-weight: 300; transition: transform .2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 1.3rem; font-weight: 300; color: var(--muted); }

/* =========================================================================
   Formulario / CTA final
   ========================================================================= */
.cta-final { background: radial-gradient(120% 120% at 50% 0%, #25253200 0%, var(--dark-bg) 70%); }
.form-card {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 2.5rem;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .9rem; font-weight: 700; letter-spacing: .3px; }
.field input, .field textarea, .field select {
  font-family: Lato, sans-serif;
  font-size: 1rem;
  color: var(--secondary-color);
  background: #ffffff0a;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: .8rem .9rem;
  transition: border-color .2s ease, background .2s ease;
}
.field input::placeholder, .field textarea::placeholder { color: #8c8c93; }
/* Lista desplegable del <select> legible (texto claro sobre fondo oscuro) */
.field select option { background: #1b1b1b; color: var(--secondary-color); }
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--accent);
  background: #ffffff12;
  outline: none;
}
.field textarea { resize: vertical; min-height: 120px; }
.form-actions { margin-top: 1.5rem; }
.form-hint { margin-top: 1rem; font-size: .85rem; font-weight: 300; color: var(--muted); text-align: center; }
.form-status { margin-top: 1rem; text-align: center; font-weight: 700; min-height: 1.2em; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #f0a9a9; }

/* =========================================================================
   Footer
   ========================================================================= */
.footer {
  border-top: 1px solid var(--card-border);
  padding: 3rem 0 2.5rem;
  background: #161616;
}
.footer .container { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-start; }
.footer-brand img { height: 30px; margin-bottom: .9rem; }
.footer-brand p { font-weight: 300; color: var(--muted); max-width: 320px; font-size: .95rem; }
.footer-col h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: 2px; margin-bottom: .9rem; color: #fff; }
.footer-col a, .footer-col span { display: block; color: var(--muted); text-decoration: none; font-weight: 300; margin-bottom: .5rem; font-size: .95rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--card-border); margin-top: 2.2rem; padding-top: 1.4rem; }
.footer-bottom .container { display: block; text-align: center; color: #8c8c93; font-size: .8rem; font-weight: 300; }
.footer-bottom a { color: var(--accent); text-decoration: none; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 900px) {
  .split .container { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  section { padding: 4.5rem 0; }
  .form-grid { grid-template-columns: 1fr; }
  .nav-right .nav-links { display: none; } /* enlaces dentro del menú móvil */
  .nav-burger { display: block; }

  /* Menú móvil a pantalla completa (estética del estudio) */
  .nav-links {
    position: fixed; inset: 0;
    flex-direction: column; justify-content: center;
    gap: 1.2rem;
    background: var(--nav-responsive-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transform: translateY(-100%);
    transition: transform .4s ease-in-out;
    z-index: 99;
  }
  .nav-links.open { display: flex; transform: translateY(0); }
  .nav-links a { font-size: 1.6rem; font-weight: 300; }
  .nav-links a.is-cta { margin-top: 1rem; }
}
@media (max-width: 480px) {
  .nav-brand .sub { display: none; }
  .form-card { padding: 1.6rem; }
  .section-title { font-size: 2rem; }
}

/* Respeta reduce-motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}