/* ==================================================================
   NEXBYTE — vistaprincipal.css
   Tema oscuro, gradientes, glassmorphism, animaciones y microinter-
   acciones. Diseño responsive (móvil / tablet / escritorio).
   ================================================================== */

/* ---------------------------- RESET ---------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

/* ------------------------- VARIABLES CSS ------------------------- */
:root {
    /* Paleta — inspirada en la identidad de marca Nexbyte */
    --color-fondo: #050914;
    --color-fondo-alterno: #070c1c;
    --color-superficie: rgba(255, 255, 255, 0.04);
    --color-superficie-borde: rgba(255, 255, 255, 0.09);
    --color-texto: #eef1fb;
    --color-texto-tenue: #a4acc6;
    --color-texto-suave: #7b84a6;

    --azul-1: #2fa8ff;
    --azul-2: #3b6bf6;
    --azul-3: #7fd6ff;
    --azul-oscuro: #0a1c3d;

    --degradado-marca: linear-gradient(120deg, var(--azul-3) 0%, var(--azul-1) 45%, var(--azul-2) 100%);
    --degradado-marca-suave: linear-gradient(135deg, rgba(47,168,255,0.18), rgba(59,107,246,0.06));
    --degradado-radial-hero: radial-gradient(60% 60% at 30% 20%, rgba(47,168,255,0.20), transparent 70%);

    --sombra-suave: 0 20px 60px rgba(3, 8, 20, 0.55);
    --sombra-boton: 0 12px 30px rgba(47, 128, 255, 0.35);

    --radio-s: 10px;
    --radio-m: 16px;
    --radio-l: 26px;
    --radio-pastilla: 999px;

    --transicion: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --contenedor-ancho: 1220px;
}

/* ---------------------------- BASE ---------------------------- */
body {
    background: var(--color-fondo);
    color: var(--color-texto);
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .navbar__logo-texto, .etiqueta-flotante {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    letter-spacing: -0.01em;
}

.contenedor {
    width: 100%;
    max-width: var(--contenedor-ancho);
    margin: 0 auto;
    padding: 0 24px;
}
.contenedor--angosto { max-width: 820px; }

.degradado-texto {
    background: var(--degradado-marca);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* --------------------- FONDO DECORATIVO GLOBAL --------------------- */
.fondo-decorativo {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.halo {
    position: absolute;
    border-radius: 50%;
    filter: blur(110px);
    opacity: 0.55;
}
.halo-1 { width: 620px; height: 620px; top: -180px; left: -120px; background: radial-gradient(circle, rgba(47,168,255,0.35), transparent 70%); }
.halo-2 { width: 560px; height: 560px; top: 40%; right: -220px; background: radial-gradient(circle, rgba(59,107,246,0.28), transparent 70%); }
.halo-3 { width: 500px; height: 500px; bottom: -220px; left: 30%; background: radial-gradient(circle, rgba(127,214,255,0.22), transparent 70%); }

.grid-tecnologico {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

/* ---------------------------- GLASSMORPHISM ---------------------------- */
.panel-vidrio {
    background: linear-gradient(160deg, rgba(255,255,255,0.055), rgba(255,255,255,0.015));
    border: 1px solid var(--color-superficie-borde);
    border-radius: var(--radio-m);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: var(--sombra-suave);
}

/* ============================== NAVBAR ============================== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 18px 0;
    transition: var(--transicion);
    background: transparent;
}
.navbar.navbar--fijo {
    padding: 12px 0;
    background: rgba(5, 9, 20, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.navbar__marca {
    display: flex;
    align-items: center;
    gap: 10px;
}
.navbar__logo-icono {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: cover;
    box-shadow: 0 6px 18px rgba(47,168,255,0.35);
}
.navbar__logo-texto {
    font-weight: 700;
    font-size: 1.25rem;
    color: #fff;
}
.navbar__enlaces {
    display: flex;
    align-items: center;
    gap: 30px;
}
.navbar__link {
    font-size: 0.94rem;
    font-weight: 500;
    color: var(--color-texto-tenue);
    position: relative;
    padding: 4px 0;
    transition: color var(--transicion);
}
.navbar__link::after {
    content: '';
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 2px;
    background: var(--degradado-marca);
    transition: width var(--transicion);
    border-radius: 2px;
}
.navbar__link:hover { color: #fff; }
.navbar__link:hover::after { width: 100%; }

.navbar__link--cta {
    color: #04101f;
    background: var(--degradado-marca);
    padding: 10px 20px;
    border-radius: var(--radio-pastilla);
    font-weight: 600;
    box-shadow: var(--sombra-boton);
    transition: transform var(--transicion), box-shadow var(--transicion);
}
.navbar__link--cta::after { display: none; }
.navbar__link--cta:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(47,128,255,0.45); color: #04101f; }

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}
.navbar__toggle span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transicion);
}
.navbar__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.navbar__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================== BOTONES ============================== */
.boton {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 28px;
    border-radius: var(--radio-pastilla);
    font-weight: 600;
    font-size: 0.98rem;
    transition: transform var(--transicion), box-shadow var(--transicion), background var(--transicion), color var(--transicion);
    white-space: nowrap;
}
.boton__icono { transition: transform var(--transicion); }
.boton:hover .boton__icono { transform: translateX(4px); }

.boton--primario {
    background: var(--degradado-marca);
    color: #04101f;
    box-shadow: var(--sombra-boton);
}
.boton--primario:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(47,128,255,0.45); }

.boton--secundario {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.14);
    color: #fff;
}
.boton--secundario:hover { background: rgba(255,255,255,0.1); transform: translateY(-3px); }

.boton--ancho { width: 100%; }
.boton:disabled { opacity: 0.6; cursor: not-allowed; transform: none !important; }

/* ============================== HERO ============================== */
.hero {
    position: relative;
    padding: 168px 0 110px;
    background: var(--degradado-radial-hero);
}
.hero__inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 40px;
}

.etiqueta-flotante {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radio-pastilla);
    background: var(--degradado-marca-suave);
    border: 1px solid rgba(127,214,255,0.28);
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--azul-3);
    margin-bottom: 22px;
}

.hero__titulo {
    font-size: clamp(2.4rem, 4.6vw, 3.6rem);
    font-weight: 700;
    line-height: 1.12;
    color: #fff;
    margin-bottom: 22px;
}

.hero__descripcion {
    font-size: 1.08rem;
    color: var(--color-texto-tenue);
    max-width: 540px;
    margin-bottom: 26px;
}

.hero__flujo-marca {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.92rem;
    color: #fff;
    margin-bottom: 34px;
}
.hero__flujo-marca span:not(.hero__flujo-flecha) {
    padding: 6px 14px;
    border-radius: var(--radio-pastilla);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
}
.hero__flujo-flecha { color: var(--azul-3); font-weight: 400; }

.hero__acciones {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 46px;
}

.hero__estadisticas {
    display: flex;
    gap: 34px;
    flex-wrap: wrap;
}
.estadistica__numero {
    display: block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.7rem;
    font-weight: 700;
    color: #fff;
}
.estadistica__texto {
    font-size: 0.82rem;
    color: var(--color-texto-suave);
}

/* -------- Visual del hero -------- */
.hero__visual {
    position: relative;
    height: 480px;
}
.hero__nucleo {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 190px; height: 190px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, rgba(47,168,255,0.5), rgba(10,20,45,0.4) 70%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 80px rgba(47,168,255,0.35);
}
.hero__nucleo-logo {
    width: 92px; height: 92px;
    border-radius: 22px;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    animation: flotar 5s ease-in-out infinite;
}
.hero__nucleo-anillo {
    position: absolute;
    inset: 0;
    border: 1px dashed rgba(127,214,255,0.35);
    border-radius: 50%;
    animation: girar 18s linear infinite;
}
.hero__nucleo-anillo--2 {
    inset: -34px;
    border-color: rgba(59,107,246,0.22);
    animation-duration: 26s;
    animation-direction: reverse;
}

.hero__tarjeta {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    font-size: 0.86rem;
    font-weight: 500;
    color: #fff;
    animation: flotar 6s ease-in-out infinite;
}
.hero__tarjeta--1 { top: 6%; left: 0%; animation-delay: 0s; }
.hero__tarjeta--2 { bottom: 18%; right: -2%; animation-delay: 1.2s; }
.hero__tarjeta--3 { bottom: -2%; left: 14%; animation-delay: 2.4s; }
.hero__tarjeta-punto {
    width: 9px; height: 9px; border-radius: 50%;
    background: var(--azul-3);
    box-shadow: 0 0 12px var(--azul-3);
}
.hero__tarjeta-punto--azul { background: var(--azul-1); box-shadow: 0 0 12px var(--azul-1); }
.hero__tarjeta-punto--celeste { background: var(--azul-2); box-shadow: 0 0 12px var(--azul-2); }

.hero__scroll {
    position: absolute;
    bottom: 28px; left: 50%;
    transform: translateX(-50%);
    width: 26px; height: 42px;
    border: 2px solid rgba(255,255,255,0.25);
    border-radius: var(--radio-pastilla);
    display: flex;
    justify-content: center;
    padding-top: 8px;
}
.hero__scroll span {
    width: 4px; height: 8px;
    border-radius: 2px;
    background: var(--azul-3);
    animation: desplazar 1.8s ease-in-out infinite;
}

@keyframes flotar { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes girar { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes desplazar { 0% { transform: translateY(0); opacity: 1; } 100% { transform: translateY(14px); opacity: 0; } }

/* ============================== SECCIONES ============================== */
.seccion { padding: 110px 0; position: relative; }
.seccion--alterna { background: linear-gradient(180deg, transparent, rgba(255,255,255,0.015) 15%, rgba(255,255,255,0.015) 85%, transparent); }

.encabezado-seccion { max-width: 680px; margin: 0 auto 60px; text-align: center; }
.etiqueta-seccion {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--azul-3);
    margin-bottom: 14px;
}
.seccion__titulo {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 16px;
}
.seccion__descripcion { color: var(--color-texto-tenue); font-size: 1.02rem; }

.seccion__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.seccion__grid--reversa .seccion__visual { order: 1; }
.seccion__grid--reversa .seccion__contenido { order: 2; }

.seccion__texto { color: var(--color-texto-tenue); margin-bottom: 16px; }

.lista-check li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    color: var(--color-texto-tenue);
}
.lista-check__icono {
    color: var(--azul-3);
    font-weight: 700;
    flex-shrink: 0;
}

.tarjeta-marca { padding: 34px; }
.tarjeta-marca__flujo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    color: #fff;
}
.tarjeta-marca__flujo span { color: var(--azul-3); margin: 0 4px; }
.tarjeta-marca__linea { height: 1px; background: rgba(255,255,255,0.1); margin: 20px 0; }
.tarjeta-marca__frase { color: var(--color-texto-tenue); font-style: italic; }

/* ---------------------------- REJILLAS / TARJETAS ---------------------------- */
.rejilla { display: grid; gap: 26px; }
.rejilla--2 { grid-template-columns: repeat(2, 1fr); }
.rejilla--3 { grid-template-columns: repeat(3, 1fr); }
.rejilla--4 { grid-template-columns: repeat(4, 1fr); }
.rejilla--compacta { gap: 18px; }

.tarjeta {
    padding: 30px 26px;
    transition: transform var(--transicion), box-shadow var(--transicion), border-color var(--transicion);
}
.tarjeta:hover {
    transform: translateY(-8px);
    border-color: rgba(127,214,255,0.35);
    box-shadow: 0 26px 60px rgba(3,8,20,0.6), 0 0 0 1px rgba(127,214,255,0.08);
}
.tarjeta__icono {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    border-radius: var(--radio-s);
    background: var(--degradado-marca-suave);
    margin-bottom: 18px;
}
.tarjeta__titulo { color: #fff; font-size: 1.08rem; margin-bottom: 8px; }
.tarjeta__texto { color: var(--color-texto-tenue); font-size: 0.93rem; }

.tarjeta-valor { padding: 24px; text-align: left; }
.tarjeta-valor__icono { font-size: 1.5rem; display: block; margin-bottom: 10px; }
.tarjeta-valor h4 { color: #fff; margin-bottom: 6px; font-size: 1rem; }
.tarjeta-valor p { color: var(--color-texto-tenue); font-size: 0.88rem; }

/* -------- Tarjetas de servicio (dinámicas) -------- */
.tarjeta-servicio {
    padding: 32px 28px;
    border-radius: var(--radio-m);
    background: linear-gradient(160deg, rgba(255,255,255,0.055), rgba(255,255,255,0.015));
    border: 1px solid var(--color-superficie-borde);
    backdrop-filter: blur(18px);
    position: relative;
    overflow: hidden;
    transition: transform var(--transicion), border-color var(--transicion), box-shadow var(--transicion);
}
.tarjeta-servicio::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--degradado-marca);
    opacity: 0;
    transition: opacity var(--transicion);
    z-index: 0;
}
.tarjeta-servicio:hover {
    transform: translateY(-8px);
    border-color: rgba(127,214,255,0.4);
    box-shadow: 0 26px 60px rgba(3,8,20,0.6);
}
.tarjeta-servicio > * { position: relative; z-index: 1; }
.tarjeta-servicio__numero {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--azul-3);
    letter-spacing: 0.06em;
    margin-bottom: 14px;
    display: block;
}
.tarjeta-servicio__titulo { color: #fff; font-size: 1.15rem; margin-bottom: 10px; }
.tarjeta-servicio__texto { color: var(--color-texto-tenue); font-size: 0.93rem; margin-bottom: 16px; }
.tarjeta-servicio__enlace {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--azul-3);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tarjeta-servicio--esqueleto, .tarjeta-proyecto--esqueleto {
    min-height: 220px;
    background: linear-gradient(100deg, rgba(255,255,255,0.03) 30%, rgba(255,255,255,0.07) 50%, rgba(255,255,255,0.03) 70%);
    background-size: 200% 100%;
    animation: brillo 1.6s ease-in-out infinite;
    border-radius: var(--radio-m);
    border: 1px solid var(--color-superficie-borde);
}
@keyframes brillo { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.mensaje-estado {
    text-align: center;
    color: var(--color-texto-suave);
    margin-top: 30px;
    font-size: 0.92rem;
}

/* -------- Tarjetas de proyecto (dinámicas) -------- */
.tarjeta-proyecto {
    border-radius: var(--radio-m);
    background: linear-gradient(160deg, rgba(255,255,255,0.055), rgba(255,255,255,0.015));
    border: 1px solid var(--color-superficie-borde);
    backdrop-filter: blur(18px);
    overflow: hidden;
    transition: transform var(--transicion), border-color var(--transicion), box-shadow var(--transicion);
}
.tarjeta-proyecto:hover {
    transform: translateY(-8px);
    border-color: rgba(127,214,255,0.4);
    box-shadow: 0 26px 60px rgba(3,8,20,0.6);
}
.tarjeta-proyecto__cabecera {
    height: 130px;
    background: var(--degradado-marca-suave);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--azul-3);
    border-bottom: 1px solid var(--color-superficie-borde);
}
.tarjeta-proyecto__cuerpo { padding: 24px 24px 28px; }
.tarjeta-proyecto__titulo { color: #fff; font-size: 1.1rem; margin-bottom: 8px; }
.tarjeta-proyecto__texto { color: var(--color-texto-tenue); font-size: 0.9rem; margin-bottom: 16px; }
.tarjeta-proyecto__etiquetas { display: flex; flex-wrap: wrap; gap: 8px; }
.tarjeta-proyecto__etiqueta {
    font-size: 0.74rem;
    padding: 4px 10px;
    border-radius: var(--radio-pastilla);
    background: rgba(255,255,255,0.06);
    color: var(--color-texto-tenue);
    border: 1px solid rgba(255,255,255,0.08);
}

/* ============================== LÍNEA DE TIEMPO (PROCESO) ============================== */
.linea-tiempo {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.linea-tiempo__item {
    padding: 30px 26px;
    border-radius: var(--radio-m);
    background: linear-gradient(160deg, rgba(255,255,255,0.045), rgba(255,255,255,0.01));
    border: 1px solid var(--color-superficie-borde);
    position: relative;
    transition: transform var(--transicion), border-color var(--transicion);
}
.linea-tiempo__item:hover { transform: translateY(-6px); border-color: rgba(127,214,255,0.35); }
.linea-tiempo__numero {
    display: inline-block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--degradado-marca);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 12px;
}
.linea-tiempo__item h3 { color: #fff; font-size: 1.02rem; margin-bottom: 8px; }
.linea-tiempo__item p { color: var(--color-texto-tenue); font-size: 0.9rem; }

/* ============================== TECNOLOGÍAS ============================== */
.rejilla-tecnologias {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}
.chip-tecnologia {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px;
    border-radius: var(--radio-pastilla);
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--color-superficie-borde);
    font-weight: 500;
    font-size: 0.94rem;
    transition: transform var(--transicion), border-color var(--transicion), background var(--transicion);
}
.chip-tecnologia:hover {
    transform: translateY(-4px);
    border-color: rgba(127,214,255,0.4);
    background: rgba(47,168,255,0.08);
}
.chip-tecnologia__icono { font-size: 1.1rem; }

/* ============================== ACORDEÓN FAQ ============================== */
.acordeon__item { margin-bottom: 14px; overflow: hidden; }
.acordeon__pregunta {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    text-align: left;
    font-weight: 600;
    font-size: 0.98rem;
    color: #fff;
}
.acordeon__icono {
    font-size: 1.3rem;
    color: var(--azul-3);
    transition: transform var(--transicion);
    flex-shrink: 0;
    margin-left: 16px;
}
.acordeon__item.activo .acordeon__icono { transform: rotate(45deg); }

.acordeon__respuesta {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transicion), padding var(--transicion);
    padding: 0 24px;
}
.acordeon__respuesta p { color: var(--color-texto-tenue); font-size: 0.92rem; padding-bottom: 0; }
.acordeon__item.activo .acordeon__respuesta { max-height: 240px; padding: 0 24px 22px; }

/* ============================== CONTACTO / FORMULARIO ============================== */
.lista-contacto { margin-top: 24px; }
.lista-contacto li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-texto-tenue);
    margin-bottom: 14px;
    font-size: 0.95rem;
}
.lista-contacto__icono { font-size: 1.1rem; }

.formulario-contacto { padding: 34px; display: flex; flex-direction: column; gap: 18px; }
.campo-formulario { display: flex; flex-direction: column; gap: 8px; }
.campo-formulario label { font-size: 0.86rem; color: var(--color-texto-tenue); font-weight: 500; }
.campo-formulario input,
.campo-formulario select,
.campo-formulario textarea {
    padding: 13px 16px;
    border-radius: var(--radio-s);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    color: #fff;
    transition: border-color var(--transicion), background var(--transicion);
    resize: vertical;
}
.campo-formulario input::placeholder,
.campo-formulario textarea::placeholder { color: var(--color-texto-suave); }
.campo-formulario input:focus,
.campo-formulario select:focus,
.campo-formulario textarea:focus {
    outline: none;
    border-color: var(--azul-1);
    background: rgba(47,168,255,0.06);
}
.campo-formulario select option { background: #0a1226; color: #fff; }

.campo-formulario__error {
    font-size: 0.8rem;
    color: #ff8686;
    min-height: 1em;
}
.campo-formulario--invalido input,
.campo-formulario--invalido textarea { border-color: #ff8686; }

.campo-oculto { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

.formulario-contacto__mensaje {
    padding: 14px 16px;
    border-radius: var(--radio-s);
    font-size: 0.9rem;
    text-align: center;
}
.formulario-contacto__mensaje--exito { background: rgba(47,168,255,0.12); color: var(--azul-3); border: 1px solid rgba(47,168,255,0.3); }
.formulario-contacto__mensaje--error { background: rgba(255,90,90,0.1); color: #ff9a9a; border: 1px solid rgba(255,90,90,0.3); }

/* ============================== FOOTER ============================== */
.footer {
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255,255,255,0.07);
    background: var(--color-fondo-alterno);
    position: relative;
}
.footer__inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}
.footer__eslogan {
    color: var(--color-texto-suave);
    margin-top: 14px;
    font-size: 0.92rem;
    max-width: 260px;
}
.footer__columna { display: flex; flex-direction: column; gap: 12px; }
.footer__columna h4 { color: #fff; font-size: 0.92rem; margin-bottom: 4px; }
.footer__columna a { color: var(--color-texto-tenue); font-size: 0.92rem; transition: color var(--transicion); }
.footer__columna a:hover { color: var(--azul-3); }

.footer__inferior {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 26px;
    border-top: 1px solid rgba(255,255,255,0.06);
    color: var(--color-texto-suave);
    font-size: 0.82rem;
}

/* ============================== BOTÓN FLOTANTE ============================== */
.boton-flotante {
    position: fixed;
    bottom: 26px;
    right: 26px;
    width: 56px; height: 56px;
    border-radius: 50%;
    background: var(--degradado-marca);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: var(--sombra-boton);
    z-index: 90;
    transition: transform var(--transicion), box-shadow var(--transicion);
}
.boton-flotante:hover { transform: scale(1.1) translateY(-2px); box-shadow: 0 18px 40px rgba(47,128,255,0.5); }

/* ============================== ANIMACIONES DE ENTRADA (scroll reveal) ============================== */
[data-animar] {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}
[data-animar="fade-up"] { transform: translateY(36px); }
[data-animar="fade-left"] { transform: translateX(36px); }
[data-animar="fade-right"] { transform: translateX(-36px); }
[data-animar].en-vista {
    opacity: 1;
    transform: translate(0, 0);
}

/* ============================== RESPONSIVE ============================== */
@media (max-width: 1080px) {
    .rejilla--4 { grid-template-columns: repeat(2, 1fr); }
    .linea-tiempo { grid-template-columns: repeat(2, 1fr); }
    .footer__inner { grid-template-columns: 1.2fr 1fr 1fr; }
    .footer__columna:last-child { grid-column: span 2; }
}

@media (max-width: 900px) {
    .navbar__enlaces {
        position: fixed;
        top: 0; right: 0;
        height: 100vh;
        width: min(320px, 80vw);
        background: rgba(6, 10, 24, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: 26px;
        padding: 40px;
        transform: translateX(100%);
        transition: transform var(--transicion);
        border-left: 1px solid rgba(255,255,255,0.08);
    }
    .navbar__enlaces.navbar__enlaces--abierto { transform: translateX(0); }
    .navbar__toggle { display: flex; }

    .hero__inner { grid-template-columns: 1fr; }
    .hero { padding-top: 140px; }
    .hero__visual { height: 340px; margin-top: 20px; order: -1; }
    .hero__descripcion { max-width: 100%; }

    .seccion__grid,
    .seccion__grid--reversa { grid-template-columns: 1fr; }
    .seccion__grid--reversa .seccion__visual,
    .seccion__grid--reversa .seccion__contenido { order: 0; }

    .rejilla--3 { grid-template-columns: repeat(2, 1fr); }
    .rejilla--2 { grid-template-columns: 1fr; }
    .linea-tiempo { grid-template-columns: 1fr; }

    .footer__inner { grid-template-columns: 1fr 1fr; }
    .footer__columna:last-child { grid-column: span 1; }
}

@media (max-width: 600px) {
    .contenedor { padding: 0 18px; }
    .seccion { padding: 80px 0; }
    .hero { padding: 120px 0 80px; }
    .hero__estadisticas { gap: 22px; }
    .rejilla--4, .rejilla--3 { grid-template-columns: 1fr; }
    .footer__inner { grid-template-columns: 1fr; gap: 30px; }
    .footer__inferior { flex-direction: column; text-align: center; }
    .hero__acciones { flex-direction: column; align-items: stretch; }
    .boton { width: 100%; }
}