/* ==========================================================================
   ibinario — landing
   Identidad: monocromática, elegante, oscura (a partir del logo blanco / I-beam)
   ========================================================================== */
:root {
    --bg: #0a0e1a;
    --bg-2: #0e1526;
    --surface: #121a30;
    --surface-2: #0f1526;
    --ink: #eef2fb;
    --muted: #9aa6c2;
    --faint: #6b7796;
    --line: rgba(255, 255, 255, .10);
    --line-2: rgba(255, 255, 255, .18);
    --accent: #cfe0f5;            /* acero claro */
    --accent-soft: rgba(207, 224, 245, .12);
    --radius: 14px;
    --shadow: 0 24px 60px -24px rgba(0, 0, 0, .7);
    --container: 1120px;
    --font: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    --display: 'Space Grotesk', var(--font);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.container { width: min(var(--container), 92%); margin-inline: auto; }

h1, h2, h3 { font-family: var(--display); line-height: 1.14; letter-spacing: -.015em; font-weight: 600; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.15rem; }

.grad { color: #fff; }
.eyebrow {
    font-family: var(--display);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .28em;
    font-size: .74rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    font-weight: 600; font-family: var(--display); font-size: .95rem;
    background: #fff; color: #0a0e1a;
    padding: .78rem 1.35rem; border-radius: 999px;
    border: 1px solid #fff; cursor: pointer;
    transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -14px rgba(207, 224, 245, .5); }
.btn--lg { padding: .98rem 1.7rem; font-size: 1rem; }
.btn--sm { padding: .52rem 1.05rem; font-size: .86rem; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover { border-color: #fff; color: #fff; box-shadow: none; }

/* ===== Nav ===== */
.nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(10, 14, 26, .72);
    backdrop-filter: saturate(160%) blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s ease, background .3s ease;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(10, 14, 26, .9); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand__logo { height: 34px; width: auto; animation: caret-blink 1.06s step-end infinite; }
@keyframes caret-blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .brand__logo { animation: none; } }
.brand__name { font-family: var(--display); font-weight: 600; font-size: 1.05rem; letter-spacing: .22em; text-transform: uppercase; }
.nav__links { display: flex; align-items: center; gap: 1.8rem; }
.nav__links a { font-weight: 500; font-size: .95rem; color: var(--muted); transition: color .2s ease; }
.nav__links a:hover { color: var(--ink); }
.nav__links .btn { color: #0a0e1a; }
.nav__lang {
    font-family: var(--display); font-weight: 600; font-size: .82rem;
    letter-spacing: .08em; color: var(--muted); border: 1px solid var(--line-2);
    border-radius: 6px; padding: .28rem .5rem; transition: color .2s ease, border-color .2s ease;
}
.nav__lang:hover { color: var(--ink); border-color: var(--ink); }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .3s ease, opacity .2s ease; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero__bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(50% 55% at 20% 0%, rgba(207, 224, 245, .10), transparent 60%),
        radial-gradient(45% 50% at 85% 10%, rgba(160, 190, 230, .09), transparent 60%);
}
.hero__bg::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: 46px 46px;
    mask-image: radial-gradient(75% 65% at 40% 25%, #000, transparent 78%);
}
.hero__inner { position: relative; padding: clamp(4.5rem, 10vw, 8rem) 0 clamp(4rem, 8vw, 6.5rem); max-width: 840px; }
.hero__title { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 600; letter-spacing: -.02em; }
.hero__lead { margin-top: 1.5rem; font-size: clamp(1.05rem, 2vw, 1.28rem); color: var(--muted); max-width: 620px; }
.hero__cta { margin-top: 2.4rem; display: flex; flex-wrap: wrap; gap: .9rem; }
.hero__stats { margin-top: 3.4rem; display: flex; flex-wrap: wrap; gap: 2.6rem; padding-top: 2.2rem; border-top: 1px solid var(--line); }
.hero__stats strong { font-family: var(--display); font-size: 1.7rem; font-weight: 600; display: block; }
.hero__stats span { color: var(--faint); font-size: .9rem; letter-spacing: .02em; }

.hero__back { display: inline-block; margin-bottom: 1.3rem; color: var(--muted); font-size: .9rem; font-weight: 500; transition: color .2s ease; }
.hero__back:hover { color: #fff; }

/* Caja destacada (explicaciones, ej. GENDEC) + badges de descarga */
.callout { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: var(--radius); padding: 1.7rem 1.9rem; }
.callout h3 { margin-bottom: .5rem; }
.callout p { color: var(--muted); }
.badges { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }

/* ===== Sections ===== */
.section { padding: clamp(3.8rem, 8vw, 7rem) 0; }
.section--alt { background: var(--surface-2); }
.section__head { max-width: 660px; margin-bottom: 3.2rem; }
.section__sub { color: var(--muted); margin-top: .7rem; font-size: 1.05rem; }

/* ===== Grid / cards ===== */
.grid { display: grid; gap: 1.3rem; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.card {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 1.8rem; transition: transform .2s ease, border-color .25s ease, background .25s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-2); background: #16203b; }
.card__icon {
    width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
    background: var(--accent-soft); color: var(--accent); margin-bottom: 1.2rem;
    border: 1px solid var(--line);
}
.card__icon svg { width: 23px; height: 23px; }
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--muted); font-size: .96rem; }

/* ===== Productos ===== */
.product { position: relative; padding-top: 2.1rem; }
.product__badge {
    position: absolute; top: 1.5rem; right: 1.6rem;
    font-family: var(--display); font-weight: 600; font-size: 1rem;
    color: var(--accent); opacity: .5;
}
.product h3 { font-size: 1.4rem; letter-spacing: .01em; }
.product__tag {
    color: var(--accent) !important; font-family: var(--display); font-weight: 500;
    font-size: .82rem; text-transform: uppercase; letter-spacing: .12em;
    margin: .35rem 0 .9rem !important;
}
.product { display: block; }
.product__more { display: inline-block; margin-top: 1.1rem; font-family: var(--display); font-weight: 600; font-size: .9rem; color: var(--accent); transition: transform .2s ease, color .2s ease; }
.product:hover .product__more { transform: translateX(5px); color: #fff; }
.product__cta { text-align: center; margin-top: 2.4rem; color: var(--muted); }
.product__cta a { color: #fff; font-weight: 600; font-family: var(--display); border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: border-color .2s ease; }
.product__cta a:hover { border-color: #fff; }

/* Tarjetas de sitios web (con miniatura) */
.product--site { padding-top: 0; }
.site__thumb {
    position: relative; display: block; overflow: hidden;
    border-radius: 12px; margin-bottom: 1.1rem; aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--line) 0%, var(--line-2) 100%);
    border: 1px solid var(--line-2);
}
.site__thumb img {
    width: 100%; height: 100%; object-fit: cover; object-position: top center;
    display: block; transition: transform .4s ease; opacity: 0; animation: thumb-in .4s ease forwards;
}
@keyframes thumb-in { to { opacity: 1; } }
.product--site:hover .site__thumb img { transform: scale(1.04); }
.site__ext {
    position: absolute; top: .6rem; right: .6rem;
    width: 30px; height: 30px; display: grid; place-items: center;
    border-radius: 50%; background: rgba(10, 14, 26, .72); backdrop-filter: blur(4px);
    color: #fff; font-family: var(--display); font-weight: 600; font-size: 1rem;
}

/* Honeypot anti-bots (oculto para humanos) */
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.cf-turnstile { margin: .2rem 0 .4rem; }

/* Botón flotante de WhatsApp */
.wa-float {
    position: fixed; right: 22px; bottom: 22px; z-index: 60;
    width: 58px; height: 58px; display: grid; place-items: center;
    border-radius: 50%; background: #25D366; color: #fff;
    box-shadow: 0 8px 24px rgba(37, 211, 102, .45);
    transition: transform .2s ease, box-shadow .2s ease;
}
.wa-float:hover { transform: scale(1.08); box-shadow: 0 10px 30px rgba(37, 211, 102, .6); }
.wa-float::before {
    content: ""; position: absolute; inset: 0; border-radius: 50%;
    background: #25D366; z-index: -1; animation: wa-pulse 2.4s ease-out infinite;
}
@keyframes wa-pulse { 0% { transform: scale(1); opacity: .55; } 70%, 100% { transform: scale(1.7); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .wa-float::before { animation: none; } }
@media (max-width: 640px) { .wa-float { width: 52px; height: 52px; right: 16px; bottom: 16px; } }

/* ===== Tech grid ("Con qué construimos") ===== */
.tech-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 1.1rem; margin-top: 1.6rem;
}
.tech-card {
    display: flex; flex-direction: column; overflow: hidden;
    border: 1px solid var(--line-2); border-radius: 12px; background: #0b1020;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.tech-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 14px 30px rgba(0, 0, 0, .35); }
.tech-card__bar {
    display: flex; align-items: center; gap: .4rem;
    padding: .55rem .8rem; border-bottom: 1px solid var(--line-2); background: rgba(255, 255, 255, .02);
}
.tech-card__dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.tech-card__name { margin-left: .45rem; font-family: var(--display); font-weight: 600; font-size: .84rem; color: var(--ink); }
.tech-card__file { margin-left: auto; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .72rem; color: var(--muted); }
.snip {
    margin: 0; flex: 1; white-space: pre; tab-size: 2; overflow-x: auto;
    padding: .95rem 1.05rem;
    font-family: ui-monospace, "Cascadia Code", "Fira Code", Consolas, monospace;
    font-size: .78rem; line-height: 1.7; color: #c9d3e6;
}
.tk-k { color: #ff7ab6; }   /* keyword      */
.tk-s { color: #9ece6a; }   /* string       */
.tk-c { color: #5c6a86; font-style: italic; } /* comment */
.tk-f { color: #7dcfff; }   /* función/tipo */
.tk-n { color: #ff9e64; }   /* número       */
.tk-p { color: #8a94a8; }   /* puntuación   */
@media (max-width: 520px) { .tech-grid { grid-template-columns: 1fr; } }

/* ===== Tecnologías (chips) ===== */
.stack { display: flex; flex-wrap: wrap; gap: .7rem; }
.chip {
    font-family: var(--display); font-weight: 500; font-size: .9rem;
    color: var(--ink); background: var(--surface);
    border: 1px solid var(--line-2); border-radius: 999px;
    padding: .55rem 1.15rem; transition: border-color .2s ease, transform .15s ease, background .2s ease;
}
.chip:hover { border-color: var(--accent); transform: translateY(-2px); background: #16203b; }

/* ===== Steps ===== */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.3rem; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.7rem; }
.step__n { font-family: var(--display); font-weight: 600; font-size: 1.9rem; color: var(--accent); opacity: .85; }
.step h3 { margin: .6rem 0 .4rem; }
.step p { color: var(--muted); font-size: .94rem; }

/* ===== Feature (producto) ===== */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 3.2rem; align-items: center; }
.feature__text p { color: var(--muted); margin-top: .9rem; }
.ticks { list-style: none; margin: 1.4rem 0 1.8rem; display: grid; gap: .65rem; }
.ticks li { position: relative; padding-left: 1.9rem; color: var(--ink); }
.ticks li::before {
    content: "✓"; position: absolute; left: 0; top: 1px;
    width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center;
    font-size: .7rem; color: #0a0e1a; background: var(--accent);
}
.feature__visual { display: grid; place-items: center; }
.mock {
    width: 100%; max-width: 430px; background: #0b1226; border-radius: 16px;
    box-shadow: var(--shadow); overflow: hidden; border: 1px solid var(--line-2);
}
.mock__bar { display: flex; gap: 7px; padding: 14px 16px; background: rgba(255,255,255,.03); border-bottom: 1px solid var(--line); }
.mock__bar span { width: 11px; height: 11px; border-radius: 50%; background: #2b3557; }
.mock__body { padding: 22px; display: grid; gap: 14px; }
.mock__row { height: 12px; border-radius: 6px; background: #1a2445; }
.mock__row--wide { height: 42px; background: linear-gradient(120deg, rgba(207,224,245,.22), rgba(207,224,245,.06)); }
.mock__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 4px; }
.mock__grid i { height: 46px; border-radius: 10px; background: #141d3a; border: 1px solid var(--line); }

/* ===== Nosotros ===== */
.nosotros { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3.2rem; align-items: center; }
.nosotros p { color: var(--muted); margin-top: 1rem; }
.values { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.value { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; }
.value strong { font-family: var(--display); font-weight: 600; display: block; margin-bottom: .3rem; }
.value span { color: var(--muted); font-size: .92rem; }

/* ===== Contacto ===== */
.contacto { display: grid; grid-template-columns: 1.4fr .8fr; gap: 3.2rem; align-items: start; }
.contacto .section__head { grid-column: 1 / -1; margin-bottom: 1.6rem; }
.form { display: grid; gap: 1rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form label { display: grid; gap: .45rem; font-weight: 500; font-size: .9rem; color: var(--muted); }
.form input, .form textarea {
    font-family: var(--font); font-size: 1rem; color: var(--ink);
    padding: .82rem .95rem; border: 1px solid var(--line-2); border-radius: 12px;
    background: var(--surface-2); transition: border-color .2s ease, box-shadow .2s ease;
}
.form input::placeholder, .form textarea::placeholder { color: var(--faint); }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.form textarea { resize: vertical; }
.form .btn { justify-self: start; }
.form__note { font-size: .9rem; min-height: 1.2em; }
.form__note.ok { color: #86e0a8; }
.form__note.err { color: #ff9a8b; }

.contacto__aside { display: grid; gap: 1rem; align-content: start; }
.contact-item {
    display: grid; gap: .3rem; padding: 1.15rem 1.25rem;
    border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
    transition: transform .15s ease, border-color .2s ease;
}
.contact-item:hover { transform: translateY(-2px); border-color: var(--accent); }
.contact-item__k { font-size: .74rem; text-transform: uppercase; letter-spacing: .16em; color: var(--faint); }
.contact-item__v { font-family: var(--display); font-weight: 600; }

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--line); padding: 3.4rem 0 2.4rem; background: var(--surface-2); }
.footer__inner { display: grid; gap: 1rem; text-align: center; place-items: center; }
.footer__logo { height: 44px; width: auto; opacity: .95; margin-bottom: .4rem; }
.footer__tag { color: var(--muted); }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.6rem; justify-content: center; }
.footer__links a { color: var(--muted); transition: color .2s ease; }
.footer__links a:hover { color: #fff; }
.footer__copy { color: var(--faint); font-size: .85rem; margin-top: .6rem; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .grid--3 { grid-template-columns: 1fr 1fr; }
    .steps { grid-template-columns: 1fr 1fr; }
    .feature, .nosotros, .contacto { grid-template-columns: 1fr; }
    .contacto__aside { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
    .nav__links {
        position: fixed; inset: 72px 0 auto 0;
        flex-direction: column; align-items: stretch; gap: 0;
        background: rgba(12, 16, 30, .98);
        border-bottom: 1px solid var(--line);
        padding: .5rem 6%; box-shadow: var(--shadow);
        transform: translateY(-140%); transition: transform .3s ease; pointer-events: none;
    }
    .nav__links.open { transform: none; pointer-events: auto; }
    .nav__links a { padding: .95rem .2rem; border-bottom: 1px solid var(--line); }
    .nav__links a:last-child { border: 0; }
    .nav__links .btn { justify-content: center; margin: .6rem 0; }
    .nav__toggle { display: flex; }
    .grid--3, .steps, .values, .contacto__aside { grid-template-columns: 1fr; }
    .hero__stats { gap: 1.7rem; }
    .form__row { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto; }
    .reveal { transition: none; opacity: 1; transform: none; }
}