/* =========================================================
   ZELOTRACK SOLUTIONS — DESIGN SYSTEM
   Concepto: "Blueprint técnico" — planos / CAD / anotaciones,
   coherente con una empresa que construye soluciones web
   y se llama Zelo-TRACK (la línea de proceso es literal).
========================================================= */

:root {
    /* Color */
    --ink: #0B2A4A;          /* azul plano técnico, oscuro */
    --ink-2: #123A63;        /* azul secundario, secciones oscuras */
    --paper: #F4F7FB;        /* "papel" frío, no el beige genérico */
    --white: #FFFFFF;
    --line: #5B7185;         /* gris-azulado, texto secundario */
    --line-soft: rgba(11, 42, 74, 0.14);
    --cyan: #7DD3E8;         /* líneas de grilla sobre fondo oscuro */
    --accent: #FF6B2C;       /* naranja señal — CTAs y marcas */
    --accent-dark: #E2580F;

    /* Tipografía */
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-body: 'Inter', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Layout */
    --section-x: 8%;
    --radius: 14px;
    --header-h: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    font-family: var(--font-body);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; }

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.15;
    letter-spacing: -0.01em;
}

.skip-link {
    position: absolute;
    left: 12px;
    top: -60px;
    background: var(--ink);
    color: var(--white);
    padding: 10px 16px;
    border-radius: 8px;
    z-index: 999;
    transition: top 0.2s ease;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    top: 12px;
}

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

/* =========================
   EYEBROW / ANOTACIONES MONO
========================= */

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;

    color: var(--cyan);
    margin-bottom: 22px;
}

.eyebrow--dark {
    color: var(--accent-dark);
}

.eyebrow .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ADE80;
    box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
    animation: pulse 2.2s infinite;
}

@keyframes pulse {
    0%   { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
    70%  { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
    100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* =========================
   HEADER / NAVBAR
========================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;

    background: var(--white);
    box-shadow: 0 1px 0 var(--line-soft);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 18px 8%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--ink);
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a:not(.btn-nav) {
    text-decoration: none;
    color: var(--ink);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 4px;
}

.nav-links a:not(.btn-nav)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.25s ease;
}

.nav-links a:not(.btn-nav):hover::after,
.nav-links a.active::after {
    width: 100%;
}

.btn-nav {
    background: var(--ink);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;

    padding: 11px 22px;
    border-radius: 999px;

    transition: background 0.2s ease;
}

.btn-nav:hover {
    background: var(--accent-dark);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--ink);
    cursor: pointer;
    padding: 6px;
}

.nav-only-mobile { display: none; }

/* =========================
   HERO
========================= */

.hero {
    position: relative;
    overflow: hidden;

    min-height: 88vh;

    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;

    padding: 140px 20px 100px;

    background:
        linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 100%);
    background-size: 44px 44px, 44px 44px, 100% 100%;

    color: var(--white);
}

.hero-content {
    max-width: 760px;
    animation: fadeUp 0.9s ease forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero h1 {
    font-size: clamp(2.1rem, 4.2vw, 3.4rem);
    font-weight: 700;
    margin-bottom: 22px;
}

.hero-lead {
    font-size: 1.15rem;
    color: #D7E2EE;
    margin-bottom: 38px;
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.98rem;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
    background: var(--accent);
    color: var(--ink);
}

.btn-primary:hover {
    background: #FF7E47;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.4);
}

.btn-secondary:hover {
    border-color: var(--white);
    transform: translateY(-2px);
}

/* esquinas tipo plano / CAD */
.corner {
    position: absolute;
    width: 26px;
    height: 26px;
    border: 1.5px solid rgba(125, 211, 232, 0.5);
    pointer-events: none;
}

.corner--tl { top: 28px; left: 28px; border-right: none; border-bottom: none; }
.corner--tr { top: 28px; right: 28px; border-left: none; border-bottom: none; }
.corner--bl { bottom: 28px; left: 28px; border-right: none; border-top: none; }
.corner--br { bottom: 28px; right: 28px; border-left: none; border-top: none; }

/* =========================
   WHATSAPP FLOTANTE
========================= */

.whatsapp-float {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 90;

    width: 58px;
    height: 58px;
    border-radius: 50%;

    background: #1FAF52;
    color: white;

    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;

    text-decoration: none;
    box-shadow: 0 6px 18px rgba(0,0,0,.22);
    transition: transform 0.2s ease;
}

.whatsapp-float:hover {
    transform: scale(1.08);
}

/* =========================
   SECTION HEADER COMÚN
========================= */

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px auto;
}

.section-header h2 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    margin-bottom: 14px;
}

.section-header p {
    color: var(--line);
    line-height: 1.8;
    font-size: 1.02rem;
}

/* =========================
   SERVICIOS
========================= */

.services {
    padding: 110px 8% 100px;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 28px;
    max-width: 1300px;
    margin: 0 auto;
}

.service-card {
    position: relative;
    background: var(--paper);
    padding: 38px 28px;
    border-radius: var(--radius);
    border: 1px solid var(--line-soft);
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
}

.service-card i {
    display: block;
    font-size: 2rem;
    color: var(--ink);
    margin-bottom: 18px;
}

.service-card h3 {
    font-size: 1.12rem;
    margin-bottom: 12px;
    color: var(--ink);
}

.service-card p {
    color: var(--line);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* =========================
   PROCESO
========================= */

.process {
    padding: 110px 8%;
    background: var(--paper);
}

.process-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 28px;
    max-width: 1300px;
    margin: 0 auto;
}

.process-track {
    position: absolute;
    top: 62px;
    left: 12.5%;
    right: 12.5%;
    height: 0;
    border-top: 2px dashed rgba(11, 42, 74, 0.22);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.1s ease;
}

.process-track.in-view {
    transform: scaleX(1);
}

@media (max-width: 900px) {
    .process-track { display: none; }
}

.process-card {
    position: relative;
    background: var(--white);
    padding: 38px 28px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--line-soft);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.process-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 36px rgba(11, 42, 74, 0.10);
}

.step-number {
    width: 45px;
    height: 45px;
    margin: 0 auto 20px auto;

    background: var(--ink);
    color: var(--white);

    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;

    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.95rem;
}

.process-card h3 {
    margin-bottom: 12px;
    color: var(--ink);
    font-size: 1.1rem;
}

.process-card p {
    color: var(--line);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* =========================
   BENEFICIOS
========================= */

.benefits {
    padding: 110px 8%;
    background: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 36px 50px;
    max-width: 950px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    padding-top: 24px;
    border-top: 1px solid var(--line-soft);
}

.benefit-icon {
    flex-shrink: 0;
    width: 46px;
    height: 46px;
    border-radius: 10px;
    border: 1px solid var(--line-soft);

    display: flex;
    align-items: center;
    justify-content: center;

    color: var(--accent-dark);
    font-size: 1.1rem;
}

.benefit-item h3 {
    margin-bottom: 8px;
    font-size: 1.05rem;
    color: var(--ink);
}

.benefit-item p {
    color: var(--line);
    line-height: 1.7;
    font-size: 0.95rem;
}

@media (max-width: 600px) {
    .benefits-grid { grid-template-columns: 1fr; }
}

/* =========================
   FRASE DESTACADA (CTA BANNER)
========================= */

.cta-banner {
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: 90px 8%;
    color: var(--white);

    background:
        linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 100%);
    background-size: 44px 44px, 44px 44px, 100% 100%;
}

.cta-banner .eyebrow {
    justify-content: center;
}

.cta-banner-text {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.5rem, 3.2vw, 2.3rem);
    line-height: 1.45;
    max-width: 760px;
    margin: 0 auto;
}

.cta-banner-text .highlight {
    color: var(--accent);
}

/* =========================
   CONTACTO
========================= */

.contact {
    padding: 110px 8%;
    background: var(--paper);
}

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 56px;
    align-items: start;
    max-width: 1100px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--white);
    padding: 34px;
    border-radius: var(--radius);
    border: 1px solid var(--line-soft);
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.contact-form input,
.contact-form textarea {
    padding: 14px 16px;
    border: 1px solid var(--line-soft);
    border-radius: 10px;
    font-size: 1rem;
    font-family: var(--font-body);
    outline: none;
    background: var(--white);
    color: var(--ink);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent);
}

.contact-form button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;

    background: var(--ink);
    color: white;

    border: none;
    padding: 15px;
    border-radius: 10px;

    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;

    transition: background 0.2s ease;
}

.contact-form button:hover {
    background: var(--accent-dark);
}

.form-status {
    font-size: 0.9rem;
    color: var(--line);
    min-height: 1.2em;
}

.form-status.is-error { color: #DC2626; }
.form-status.is-success { color: #16A34A; }

.contact-info h3 {
    margin-bottom: 14px;
    font-size: 1.4rem;
    font-family: var(--font-display);
    color: var(--ink);
}

.contact-info p {
    color: var(--line);
    line-height: 1.7;
    margin-bottom: 22px;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;

    background: #1FAF52;
    color: white;

    padding: 14px 20px;
    border-radius: 10px;

    text-decoration: none;
    font-weight: 700;
    font-size: 1.02rem;

    margin-bottom: 26px;
    transition: transform 0.2s ease;
}

.whatsapp-btn:hover {
    transform: translateY(-2px);
}

/* =========================
   FOOTER
========================= */

.footer {
    background: var(--ink);
    color: white;
    padding: 80px 8% 30px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    max-width: 1300px;
    margin: 0 auto 40px;
}

.footer-box h2 {
    font-size: 1.6rem;
    margin-bottom: 14px;
}

.footer-box h2 span {
    color: var(--accent);
}

.footer-box h3 {
    margin-bottom: 14px;
    font-size: 1.05rem;
}

.footer-box p {
    color: #B9C8D8;
    line-height: 1.7;
}

.footer-box ul {
    list-style: none;
}

.footer-box ul li {
    margin-bottom: 8px;
    color: #B9C8D8;
}

.footer-bottom {
    text-align: center;
    padding-top: 22px;
    border-top: 1px solid rgba(255,255,255,0.12);
    color: #8FA3B8;
    font-size: 0.88rem;
    max-width: 1300px;
    margin: 0 auto;
}

/* =========================
   SCROLL REVEAL
========================= */

.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal, .hero-content, .process-track {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
        animation: none !important;
    }
    .eyebrow .dot { animation: none; }
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 860px) {

    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-only-desktop { display: none; }
    .nav-only-mobile { display: block; margin-top: 6px; }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;

        flex-direction: column;
        align-items: flex-start;
        gap: 18px;

        background: var(--white);
        padding: 22px 8% 28px;
        border-top: 1px solid var(--line-soft);
        box-shadow: 0 12px 24px rgba(11,42,74,0.08);

        max-height: 0;
        overflow: hidden;
        padding-top: 0;
        padding-bottom: 0;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .nav-links.is-open {
        max-height: 420px;
        padding-top: 22px;
        padding-bottom: 28px;
    }

    .hero { padding: 120px 20px 80px; }
    .hero h1 { font-size: 2.1rem; }

    .corner { width: 18px; height: 18px; }
    .corner--tl, .corner--tr { top: 16px; }
    .corner--bl, .corner--br { bottom: 16px; }
    .corner--tl, .corner--bl { left: 16px; }
    .corner--tr, .corner--br { right: 16px; }
}

@media (max-width: 600px) {
    .services, .process, .benefits, .contact {
        padding-left: 6%;
        padding-right: 6%;
    }

    .contact-form { padding: 26px 22px; }
}