/* =========================================================
   DATA·JHIN — Design tokens
   ========================================================= */
:root {
    /* Color */
    --ink: #0F1115;
    --ink-soft: #171A21;
    --paper: #F6F4EF;
    --paper-alt: #ECE9E1;
    --text-on-ink: #EDEFF3;
    --text-on-ink-muted: #9AA1B0;
    --text-on-paper: #1A1D24;
    --text-on-paper-muted: #5A5F6C;
    --blue: #3457D5;
    --blue-dark: #24409C;
    --amber: #F2A93B;
    --amber-dark: #D6901F;
    --border-soft: rgba(255, 255, 255, 0.10);
    --border-soft-dark: rgba(15, 17, 21, 0.10);

    /* Type */
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;

    /* Layout */
    --container-w: 1160px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --space-section: clamp(4rem, 8vw, 7rem);
}

/* =========================================================
   Reset & base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--paper);
    color: var(--text-on-paper);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }

.container {
    max-width: var(--container-w);
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--amber);
    color: var(--ink);
    padding: 0.6rem 1rem;
    z-index: 999;
}
.skip-link:focus { left: 1rem; top: 1rem; }

:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 3px;
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(15, 17, 21, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-soft);
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 0.9rem;
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.brand__logo { border-radius: 8px; }
.brand__name {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--text-on-ink);
    font-size: 1.05rem;
}
.main-nav {
    display: none;
    align-items: center;
    gap: 1.75rem;
}
.main-nav a {
    color: var(--text-on-ink-muted);
    font-size: 0.95rem;
    transition: color 0.2s ease;
}
.main-nav a:hover { color: var(--text-on-ink); }
.main-nav__cta {
    background: var(--amber);
    color: var(--ink) !important;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}
.main-nav__cta:hover { background: var(--amber-dark); }

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
}
.nav-toggle span {
    display: block;
    height: 2px;
    margin-inline: 9px;
    background: var(--text-on-ink);
}

.mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--ink-soft);
    border-top: 1px solid var(--border-soft);
    padding: 1rem 1.5rem 1.5rem;
}
.mobile-nav.is-open { display: flex; }
.mobile-nav a {
    color: var(--text-on-ink-muted);
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--border-soft);
}
.mobile-nav .main-nav__cta {
    text-align: center;
    margin-top: 0.75rem;
    border-bottom: none;
}

@media (min-width: 860px) {
    .main-nav { display: flex; }
    .nav-toggle { display: none; }
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.98rem;
    transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
    border: 1px solid transparent;
}
.btn--primary {
    background: var(--amber);
    color: var(--ink);
}
.btn--primary:hover { background: var(--amber-dark); transform: translateY(-1px); }
.btn--ghost {
    border-color: currentColor;
    color: inherit;
}
.btn--ghost:hover { background: rgba(255,255,255,0.06); }
.btn--lg { padding: 1rem 2rem; font-size: 1.05rem; }
.btn--block { width: 100%; }

/* =========================================================
   Hero
   ========================================================= */
.hero {
    background: var(--ink);
    color: var(--text-on-ink);
    padding-block: clamp(3.5rem, 8vw, 6rem);
    overflow: hidden;
}
.hero__grid {
    display: grid;
    gap: 3rem;
    align-items: center;
}
.eyebrow {
    color: var(--amber);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}
.hero__title {
    font-size: clamp(2.1rem, 5vw, 3.4rem);
    font-weight: 700;
    margin-block: 1rem 1.25rem;
    max-width: 18ch;
}
.hero__subtitle {
    color: var(--text-on-ink-muted);
    font-size: 1.08rem;
    max-width: 46ch;
    margin-bottom: 1.75rem;
}
.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-bottom: 1.75rem;
}
.hero__trust {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    font-size: 0.85rem;
    color: var(--text-on-ink-muted);
}
.hero__trust li { position: relative; padding-left: 1.1rem; }
.hero__trust li::before {
    content: '';
    position: absolute;
    left: 0; top: 0.45em;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--amber);
}

.code-card {
    background: var(--ink-soft);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 30px 60px -25px rgba(0,0,0,0.6);
}
.code-card__bar {
    display: flex;
    gap: 6px;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-soft);
}
.code-card__bar span {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255,255,255,0.18);
}
.code-card__body {
    margin: 0;
    padding: 1.5rem;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.88rem;
    color: var(--text-on-ink-muted);
    overflow-x: auto;
}
.tok-key { color: #7AA2FF; }
.tok-fn { color: var(--amber); }
.tok-str { color: #8FD6A5; }

@media (min-width: 900px) {
    .hero__grid { grid-template-columns: 1.1fr 0.9fr; }
}

/* =========================================================
   Section headers
   ========================================================= */
.section-title {
    font-size: clamp(1.7rem, 3.5vw, 2.3rem);
    max-width: 20ch;
}
.section-title--light { color: var(--text-on-ink); }
.section-lead {
    margin-top: 0.75rem;
    color: var(--text-on-paper-muted);
    max-width: 52ch;
    font-size: 1.05rem;
}
.differentiators .section-lead,
.testimonials .section-lead { color: var(--text-on-ink-muted); }

/* =========================================================
   Services
   ========================================================= */
.services { padding-block: var(--space-section); }
.services__grid {
    margin-top: 2.5rem;
    display: grid;
    gap: 1.25rem;
}
.service-card {
    background: #fff;
    border: 1px solid var(--border-soft-dark);
    border-radius: var(--radius-md);
    padding: 1.75rem;
}
.service-card__icon {
    display: inline-flex;
    width: 44px; height: 44px;
    color: var(--blue);
}
.service-card__icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 1.15rem; margin: 1rem 0 0.5rem; }
.service-card p { color: var(--text-on-paper-muted); font-size: 0.96rem; }

@media (min-width: 780px) {
    .services__grid { grid-template-columns: repeat(3, 1fr); }
}

/* =========================================================
   Differentiators
   ========================================================= */
.differentiators {
    background: var(--ink);
    color: var(--text-on-ink);
    padding-block: var(--space-section);
}
.differentiators__grid {
    margin-top: 2.5rem;
    display: grid;
    gap: 2rem;
}
.diff-item__icon { width: 34px; height: 34px; color: var(--amber); }
.diff-item h3 { font-size: 1.05rem; margin: 0.9rem 0 0.4rem; }
.diff-item p { color: var(--text-on-ink-muted); font-size: 0.93rem; }

@media (min-width: 780px) {
    .differentiators__grid { grid-template-columns: repeat(4, 1fr); }
}

/* =========================================================
   Process / timeline
   ========================================================= */
.process { padding-block: var(--space-section); }
.timeline {
    margin-top: 2.5rem;
    display: grid;
    gap: 2rem;
    counter-reset: step;
}
.timeline__marker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--blue);
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: 0.9rem;
}
.timeline__step h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.timeline__step p { color: var(--text-on-paper-muted); font-size: 0.95rem; }

@media (min-width: 780px) {
    .timeline { grid-template-columns: repeat(4, 1fr); position: relative; }
    .timeline::before {
        content: '';
        position: absolute;
        top: 20px; left: 0; right: 0;
        height: 2px;
        background: var(--border-soft-dark);
        z-index: 0;
    }
    .timeline__marker { position: relative; z-index: 1; }
}

/* =========================================================
   Portfolio
   ========================================================= */
.portfolio {
    background: var(--paper-alt);
    padding-block: var(--space-section);
}
.portfolio-subtitle {
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    color: var(--text-on-paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-family: var(--font-body);
    font-weight: 700;
}
.portfolio-subtitle--apps { margin-top: 3rem; }

.portfolio__grid {
    display: grid;
    gap: 1.5rem;
}
.portfolio-card {
    display: block;
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-soft-dark);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -20px rgba(15,17,21,0.25);
}
.portfolio-card__link {
    display: inline-block;
    margin-top: 0.9rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blue);
}
.portfolio-card__media {
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--blue), var(--ink));
    overflow: hidden;
}
.portfolio-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.portfolio-card:hover .portfolio-card__media img {
    transform: scale(1.05);
}
.portfolio-card__body { padding: 1.5rem; }
.portfolio-card__tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--blue);
    background: rgba(52,87,213,0.09);
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    margin-bottom: 0.7rem;
}
.portfolio-card h3 { font-size: 1.08rem; margin-bottom: 0.5rem; }
.portfolio-card p { color: var(--text-on-paper-muted); font-size: 0.93rem; }

@media (min-width: 780px) {
    .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
    .portfolio__grid { grid-template-columns: repeat(4, 1fr); }
}

/* =========================================================
   Plans
   ========================================================= */
.plans {
    background: var(--paper-alt);
    padding-block: var(--space-section);
}
.plans__grid {
    margin-top: 2.5rem;
    display: grid;
    gap: 1.5rem;
}
.plan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border-soft-dark);
    border-radius: var(--radius-md);
    padding: 2rem 1.75rem;
}
.plan-card--featured {
    border-color: var(--blue);
    box-shadow: 0 25px 50px -25px rgba(52, 87, 213, 0.35);
}
.plan-card__badge {
    position: absolute;
    top: -0.8rem;
    left: 1.75rem;
    background: var(--blue);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
}
.plan-card__name {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}
.plan-card__price {
    font-family: var(--font-display);
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 1.5rem;
}
.plan-card__price span {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-on-paper-muted);
}
.plan-card__list {
    display: grid;
    gap: 0.65rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}
.plan-card__list li {
    position: relative;
    padding-left: 1.4rem;
    font-size: 0.93rem;
    color: var(--text-on-paper-muted);
}
.plan-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--amber);
}
.plans__note {
    margin-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-on-paper-muted);
}

@media (min-width: 900px) {
    .plans__grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
    .plan-card--featured { transform: translateY(-0.75rem); }
}

/* =========================================================
   Testimonials
   ========================================================= */
.testimonials {
    background: var(--ink);
    color: var(--text-on-ink);
    padding-block: var(--space-section);
}
.testimonials__grid {
    margin-top: 2.5rem;
    display: grid;
    gap: 1.5rem;
}
.testimonial-card {
    margin: 0;
    background: var(--ink-soft);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    padding: 1.75rem;
}
.testimonial-card p { font-size: 1.02rem; }
.testimonial-card footer {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-on-ink-muted);
}
.testimonials__note {
    margin-top: 2rem;
    font-size: 0.78rem;
    color: var(--text-on-ink-muted);
    opacity: 0.8;
}

@media (min-width: 780px) {
    .testimonials__grid { grid-template-columns: repeat(3, 1fr); }
}

/* =========================================================
   Final CTA
   ========================================================= */
.final-cta {
    background: linear-gradient(120deg, var(--blue-dark), var(--blue));
    color: #fff;
    padding-block: var(--space-section);
}
.final-cta__inner { max-width: 640px; }
.final-cta h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
.final-cta p { margin: 1.1rem 0 1.75rem; color: rgba(255,255,255,0.85); font-size: 1.05rem; }
.final-cta .btn--primary { background: #fff; color: var(--blue-dark); }
.final-cta .btn--primary:hover { background: var(--paper-alt); }

/* =========================================================
   Contact
   ========================================================= */
.contact { padding-block: var(--space-section); }
.contact__grid {
    display: grid;
    gap: 2.5rem;
}
.contact__intro .btn { margin-top: 1.5rem; }

.contact__form-wrap {
    background: #fff;
    border: 1px solid var(--border-soft-dark);
    border-radius: var(--radius-md);
    padding: 1.75rem;
}
.contact-form { display: grid; gap: 1.1rem; }
.form-field { display: grid; gap: 0.4rem; }
.form-field label { font-size: 0.88rem; font-weight: 600; }
.form-field input,
.form-field textarea {
    font: inherit;
    padding: 0.75rem 0.9rem;
    border: 1px solid rgba(15,17,21,0.18);
    border-radius: var(--radius-sm);
    background: var(--paper);
    resize: vertical;
}
.form-field input:focus,
.form-field textarea:focus { border-color: var(--blue); }
.field-error { color: #C0392B; font-size: 0.82rem; }
.hp-field { position: absolute; left: -9999px; }
.form-alert {
    padding: 0.9rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    margin-bottom: 1.1rem;
}
.form-alert--success { background: rgba(63,166,102,0.12); color: #2E7D46; }
.form-alert--error { background: rgba(192,57,43,0.1); color: #C0392B; }

@media (min-width: 900px) {
    .contact__grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
    background: var(--ink);
    color: var(--text-on-ink-muted);
    padding-top: 3.5rem;
}
.footer__grid {
    display: grid;
    gap: 2rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-soft);
}
.footer__brand p { color: var(--text-on-ink); margin-top: 0.6rem; font-weight: 600; }
.footer__tagline { color: var(--text-on-ink-muted) !important; font-weight: 400 !important; font-size: 0.9rem; }
.footer__col h3 {
    font-family: var(--font-body);
    font-size: 0.82rem;
    text-transform: none;
    color: var(--text-on-ink);
    margin-bottom: 0.8rem;
}
.footer__col a, .footer__col p { display: block; margin-bottom: 0.55rem; font-size: 0.92rem; }
.footer__bottom {
    padding-block: 1.5rem;
    font-size: 0.82rem;
}

@media (min-width: 780px) {
    .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; }
}

/* =========================================================
   WhatsApp float button
   ========================================================= */
.whatsapp-float {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    width: 54px; height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    box-shadow: 0 10px 25px -8px rgba(0,0,0,0.4);
    z-index: 60;
}

/* =========================================================
   Scroll reveal (una sola secuencia orquestada por sección)
   ========================================================= */
[data-reveal] {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}
[data-reveal-root] [data-reveal]:nth-child(1) { transition-delay: 0.05s; }
[data-reveal-root] [data-reveal]:nth-child(2) { transition-delay: 0.15s; }
[data-reveal-root] [data-reveal]:nth-child(3) { transition-delay: 0.25s; }
[data-reveal-root] [data-reveal]:nth-child(4) { transition-delay: 0.35s; }

@media (prefers-reduced-motion: reduce) {
    [data-reveal] { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}