:root {
    --azul: #1E6FE0;
    --azul-claro: #4FA3FF;
    --azul-oscuro: #0D3A86;
    --marino: #0B1426;
    --marino-2: #111D36;
    --gris-900: #1B2333;
    --gris-600: #5A6478;
    --gris-300: #D5DAE3;
    --gris-100: #F3F5F9;
    --blanco: #FFFFFF;
    --radio: 14px;
    --sombra: 0 10px 30px rgba(11, 20, 38, .08);
    --font-titulo: "Exo 2", system-ui, sans-serif;
    --font-texto: "Inter", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
    margin: 0;
    font-family: var(--font-texto);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gris-900);
    background: var(--blanco);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul); }
h1, h2, h3 { font-family: var(--font-titulo); line-height: 1.15; margin: 0 0 .5em; color: var(--marino); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

.eyebrow {
    font-family: var(--font-titulo);
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--azul);
    margin-bottom: .75rem;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .85rem 1.6rem;
    border: 2px solid var(--azul);
    border-radius: 999px;
    background: var(--azul);
    color: var(--blanco);
    font-family: var(--font-titulo);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: background .2s, border-color .2s, transform .2s, box-shadow .2s;
}
.btn:hover { background: var(--azul-claro); border-color: var(--azul-claro); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(30, 111, 224, .35); }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.btn--ghost { background: transparent; border-color: rgba(255, 255, 255, .35); }
.btn--ghost:hover { background: rgba(255, 255, 255, .08); border-color: var(--blanco); box-shadow: none; }
.btn--sm { padding: .5rem 1.1rem; font-size: .9rem; }
.btn--block { width: 100%; }

/* Marca */
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; }
.brand__text { font-family: var(--font-titulo); font-weight: 800; font-size: 1.35rem; letter-spacing: .04em; color: var(--blanco); }
.brand__text span { color: var(--azul-claro); }

/* Navegación */
.nav {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 50;
    transition: background .25s, box-shadow .25s;
}
.nav.is-scrolled { background: rgba(11, 20, 38, .92); backdrop-filter: blur(10px); box-shadow: 0 1px 0 rgba(255, 255, 255, .06); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav__menu { display: flex; align-items: center; gap: 2rem; }
.nav__menu a:not(.btn) { color: rgba(255, 255, 255, .8); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav__menu a:not(.btn):hover { color: var(--blanco); }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav__toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--blanco); transition: transform .2s, opacity .2s; }

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding: 140px 0 90px;
    color: rgba(255, 255, 255, .82);
    background:
        radial-gradient(900px 500px at 85% 30%, rgba(30, 111, 224, .28), transparent 60%),
        linear-gradient(160deg, var(--marino) 0%, var(--marino-2) 100%);
}
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, #000 30%, transparent);
    pointer-events: none;
}
.hero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.hero h1 { color: var(--blanco); font-size: clamp(2.3rem, 5.5vw, 3.9rem); font-weight: 800; letter-spacing: -.01em; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--azul-claro), var(--azul)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; max-width: 34em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; margin: 2rem 0 2.5rem; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 2.5rem; list-style: none; padding: 0; margin: 0; }
.hero__stats strong { display: block; font-family: var(--font-titulo); font-size: 1.6rem; color: var(--blanco); }
.hero__stats span { font-size: .85rem; color: rgba(255, 255, 255, .6); }
.hero__art { position: relative; display: grid; place-items: center; }
.hero__art img { position: relative; width: 100%; max-width: 340px; filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .45)); animation: flotar 6s ease-in-out infinite; }
.hero__glow { position: absolute; width: 80%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(79, 163, 255, .35), transparent 65%); filter: blur(20px); }
@keyframes flotar { 50% { transform: translateY(-14px); } }

/* Secciones */
.section { padding: 96px 0; }
.section--alt { background: var(--gris-100); }
.section--dark { background: linear-gradient(160deg, var(--marino) 0%, var(--marino-2) 100%); color: rgba(255, 255, 255, .8); }
.section--dark h2 { color: var(--blanco); }
.section__head { max-width: 640px; margin: 0 auto 3.5rem; text-align: center; }
.section__head p:last-child { color: var(--gris-600); font-size: 1.05rem; }

/* Tarjetas de servicios */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.card {
    padding: 2rem 1.6rem;
    border: 1px solid var(--gris-300);
    border-radius: var(--radio);
    background: var(--blanco);
    transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--sombra); border-color: transparent; }
.card p { color: var(--gris-600); font-size: .95rem; margin: 0; }
.card__icon {
    width: 48px; height: 48px; padding: 11px; margin-bottom: 1.25rem;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--azul-claro), var(--azul-oscuro));
    fill: none; stroke: var(--blanco); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

/* Proyectos */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.case {
    position: relative;
    padding: 1.8rem 1.6rem 1.6rem;
    border-radius: var(--radio);
    background: var(--blanco);
    box-shadow: var(--sombra);
    overflow: hidden;
}
.case::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: linear-gradient(var(--azul-claro), var(--azul-oscuro)); }
.case__tag { display: inline-block; margin-bottom: .9rem; padding: .2rem .7rem; border-radius: 999px; background: rgba(30, 111, 224, .1); color: var(--azul); font-size: .78rem; font-weight: 600; }
.case p { color: var(--gris-600); font-size: .95rem; margin: 0; }
.tech { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; list-style: none; padding: 0; margin: 3rem 0 0; }
.tech li { padding: .4rem 1rem; border: 1px solid var(--gris-300); border-radius: 999px; background: var(--blanco); font-size: .88rem; font-weight: 500; color: var(--gris-900); }

/* Plataforma de eventos */
.section--evt { position: relative; overflow: hidden; }
.section--evt::before { content: ""; position: absolute; inset: auto -10% -40% auto; width: 700px; height: 700px; border-radius: 50%; background: radial-gradient(circle, rgba(30, 111, 224, .22), transparent 65%); pointer-events: none; }
.section--evt .container { position: relative; }
.evt__head { display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: end; margin-bottom: 3rem; }
.evt__head p { font-size: 1.05rem; max-width: 36em; }
.evt__head .btn { margin-top: .5rem; }
.evt__para { display: flex; flex-wrap: wrap; gap: .6rem; list-style: none; padding: 0; margin: 0; justify-content: flex-end; }
.evt__para li { padding: .45rem 1rem; border: 1px solid rgba(79, 163, 255, .35); border-radius: 999px; color: var(--blanco); font-size: .9rem; background: rgba(30, 111, 224, .1); }
.evt__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.evt {
    padding: 1.6rem 1.5rem;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radio);
    background: rgba(255, 255, 255, .035);
    transition: border-color .25s, background .25s, transform .25s;
}
.evt:hover { border-color: rgba(79, 163, 255, .45); background: rgba(30, 111, 224, .08); transform: translateY(-3px); }
.evt h3 { color: var(--blanco); font-size: 1.1rem; }
.evt p { margin: 0; font-size: .93rem; color: rgba(255, 255, 255, .68); }
.evt__icon { width: 46px; height: 46px; padding: 9px; margin-bottom: 1rem; border-radius: 12px; background: rgba(79, 163, 255, .14); fill: none; stroke: var(--azul-claro); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* Proceso */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; list-style: none; padding: 0; margin: 0; counter-reset: paso; }
.step { position: relative; padding-top: .5rem; }
.step:not(:last-child)::after { content: ""; position: absolute; top: 30px; left: 68px; right: -12px; height: 2px; background: linear-gradient(90deg, var(--azul), transparent); }
.step__num {
    display: grid; place-items: center;
    width: 52px; height: 52px; margin-bottom: 1.2rem;
    border-radius: 14px;
    background: var(--marino);
    color: var(--azul-claro);
    font-family: var(--font-titulo); font-weight: 800; font-size: 1.3rem;
    box-shadow: inset 0 0 0 1px rgba(79, 163, 255, .35);
}
.step p { color: var(--gris-600); font-size: .95rem; }

/* Contacto */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 4rem; align-items: start; }
.contact__list { list-style: none; padding: 0; margin: 2rem 0 0; }
.contact__list li { display: flex; flex-direction: column; padding: 1rem 0; border-top: 1px solid rgba(255, 255, 255, .1); color: var(--blanco); }
.contact__list span { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255, 255, 255, .5); }
.contact__list a { color: var(--azul-claro); text-decoration: none; }
.form {
    display: grid; gap: 1rem;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radio);
    background: rgba(255, 255, 255, .04);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form label { display: grid; gap: .4rem; font-size: .88rem; font-weight: 500; color: rgba(255, 255, 255, .75); }
.form input, .form select, .form textarea {
    width: 100%;
    padding: .75rem .9rem;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 10px;
    background: rgba(11, 20, 38, .6);
    color: var(--blanco);
    font: inherit;
    transition: border-color .2s, box-shadow .2s;
}
.form select option { background: var(--marino); }
.form textarea { resize: vertical; min-height: 120px; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--azul-claro); box-shadow: 0 0 0 3px rgba(79, 163, 255, .25); }
.form .is-invalid { border-color: #FF6B6B; }
.form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form__status { margin: 0; min-height: 1.5em; font-size: .92rem; }
.form__status.is-ok { color: #5BE3A1; }
.form__status.is-error { color: #FF8A8A; }

/* Pie */
.footer { padding: 2.5rem 0; background: #070D1A; color: rgba(255, 255, 255, .55); font-size: .9rem; }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; }
.footer p { margin: 0; }
.brand--light .brand__text { font-size: 1.1rem; }

/* Responsivo */
@media (max-width: 1000px) {
    .evt__head { grid-template-columns: 1fr; gap: 1.5rem; }
    .evt__para { justify-content: flex-start; }
    .evt__grid { grid-template-columns: repeat(2, 1fr); }
    .cards { grid-template-columns: repeat(2, 1fr); }
    .cases { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); row-gap: 2.5rem; }
    .step::after { display: none; }
    .contact { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 820px) {
    .nav__toggle { display: block; }
    .nav__menu {
        position: fixed; inset: 72px 0 auto 0;
        flex-direction: column; align-items: stretch; gap: 0;
        padding: 1rem 20px 1.5rem;
        background: var(--marino);
        box-shadow: 0 20px 30px rgba(0, 0, 0, .3);
        transform: translateY(-120%); visibility: hidden;
        transition: transform .25s, visibility .25s;
    }
    .nav__menu a:not(.btn) { padding: .9rem 0; border-bottom: 1px solid rgba(255, 255, 255, .06); }
    .nav__menu .btn { margin-top: 1rem; }
    .nav.is-open { background: var(--marino); }
    .nav.is-open .nav__menu { transform: none; visibility: visible; }
    .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
    .nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .hero { padding: 110px 0 70px; }
    .hero__grid { grid-template-columns: 1fr; gap: 2rem; }
    .hero__art { order: -1; }
    .hero__art img { max-width: 190px; }
    .section { padding: 72px 0; }
}
@media (max-width: 560px) {
    .container { padding: 0 16px; }
    .cards, .cases, .steps, .evt__grid { grid-template-columns: 1fr; }
    .form { padding: 1.4rem; }
    .form__row { grid-template-columns: 1fr; }
    .hero__stats { gap: 1.5rem; }
    .hero__cta .btn { flex: 1 1 100%; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hero__art img { animation: none; }
}