/* KinEnf - estilos de la landing (complementa W3.CSS) */
:root {
    --k-primary: #0b6bcb;
    --k-primary-dark: #08529c;
    --k-primary-soft: #e8f2fd;
    --k-accent: #25d366;
    --k-ink: #1d2433;
    --k-muted: #5b6475;
    --k-bg: #fcfcfc;
    --k-surface: #ffffff;
    --k-dark: #141a24;
    --k-radius: 16px;
    --k-shadow: 0 10px 30px rgba(17, 38, 75, 0.08);
    --k-shadow-hover: 0 16px 40px rgba(17, 38, 75, 0.14);
    --k-nav-h: 72px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--k-nav-h) + 24px);
}

body.k-body {
    margin: 0;
    background-color: var(--k-bg);
    color: var(--k-ink);
    font-family: 'Nunito', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.k-body h1, .k-body h2, .k-body h3, .k-body h4 {
    font-weight: 800;
    font-family: 'Nunito', Helvetica, Arial, sans-serif;
    text-wrap: balance;
    color: var(--k-ink);
    line-height: 1.25;
}

.k-body a:focus-visible, .k-body button:focus-visible {
    outline: 3px solid #8cc4ff;
    outline-offset: 2px;
}

.k-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ---------- Navbar ---------- */
.k-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    padding: 10px 16px;
    pointer-events: none;
}

.k-nav-inner {
    pointer-events: auto;
    max-width: 1140px;
    margin: 0 auto;
    min-height: var(--k-nav-h);
    padding: 0 12px 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: rgba(255, 255, 255, 1);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    backdrop-filter: saturate(180%) blur(12px);
    border-radius: var(--k-radius);
    box-shadow: var(--k-shadow);
    transition: box-shadow .25s ease;
}

.k-nav.is-scrolled .k-nav-inner {
    box-shadow: 0 6px 24px rgba(17, 38, 75, 0.16);
}

.k-logo img {
    height: 46px;
    display: block;
}

.k-nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.k-nav-links a {
    text-decoration: none;
    color: var(--k-ink);
    font-weight: 600;
    padding: 10px 14px;
    border-radius: 10px;
    transition: background .2s ease, color .2s ease;
}

.k-nav-links a:hover {
    background: var(--k-primary-soft);
    color: var(--k-primary);
}

.k-nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    font-size: 22px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    color: var(--k-ink);
}

.k-nav-mobile {
    pointer-events: auto;
    max-width: 1140px;
    margin: 8px auto 0;
    background: var(--k-surface);
    border-radius: var(--k-radius);
    box-shadow: var(--k-shadow);
    padding: 8px;
}

.k-nav-mobile a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--k-ink);
    font-weight: 600;
    border-radius: 10px;
}

.k-nav-mobile a:hover {
    background: var(--k-primary-soft);
}

@media (max-width: 800px) {
    .k-nav-links .k-hide-mobile {
        display: none;
    }

    .k-nav-toggle {
        display: inline-block;
    }
}

/* ---------- Botones ---------- */
.k-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 26px;
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    border: 2px solid transparent;
    text-decoration: none;
    cursor: pointer;
    transition: transform .15s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
}

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

.k-btn-primary {
    background: var(--k-primary);
    color: #fff !important;
    box-shadow: 0 8px 20px rgba(11, 107, 203, 0.3);
}

.k-btn-primary:hover {
    background: var(--k-primary-dark);
}

.k-btn-whatsapp {
    background: var(--k-accent);
    color: #fff !important;
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.3);
}

.k-btn-whatsapp:hover {
    background: #1ebe5a;
}

.k-btn-ghost {
    background: rgba(255, 255, 255, 0.12);
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.7);
}

.k-btn-ghost:hover {
    background: rgba(255, 255, 255, 0.24);
}

.k-btn-sm {
    padding: 10px 16px;
    font-size: .95rem;
}

.k-nav-links a.k-btn-primary:hover {
    background: var(--k-primary-dark);
    color: #fff;
}

/* ---------- Hero ---------- */
.k-hero {
    position: relative;
    min-height: min(92vh, 760px);
    display: flex;
    align-items: center;
    color: #fff;
    background-color: #1b2a3f;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.k-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(10, 22, 40, 0.85) 0%, rgba(10, 22, 40, 0.55) 55%, rgba(10, 22, 40, 0.2) 100%);
}

.k-hero-content {
    position: relative;
    padding-top: calc(var(--k-nav-h) + 48px);
    padding-bottom: 64px;
    max-width: 640px;
}

.k-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: .9rem;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.k-hero h1 {
    color: #fff;
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 800;
    margin: 18px 0 12px;
}

.k-hero h1 span {
    color: #8cc4ff;
}

.k-hero p.k-lead {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.88);
    margin: 0 0 28px;
}

.k-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.k-hero-points {
    list-style: none;
    padding: 0;
    margin: 32px 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    color: rgba(255, 255, 255, 0.9);
}

.k-hero-points i {
    color: #8cc4ff;
    margin-right: 6px;
}

/* ---------- Secciones ---------- */
.k-section {
    padding: 88px 0;
}

.k-section-alt {
    background: #f3f7fd;
}

.k-section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}

.k-eyebrow {
    display: inline-block;
    color: var(--k-primary);
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    font-size: .85rem;
    margin-bottom: 8px;
}

.k-section-head h2 {
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    margin: 0 0 12px;
}

.k-section-head p {
    color: var(--k-muted);
    font-size: 1.1rem;
    margin: 0;
}

/* ---------- Tarjetas de servicio ---------- */
.k-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.k-card {
    background: var(--k-surface);
    border-radius: var(--k-radius);
    padding: 32px 28px;
    box-shadow: var(--k-shadow);
    border: 1px solid #eef1f6;
    transition: transform .2s ease, box-shadow .2s ease;
    text-align: left;
}

.k-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--k-shadow-hover);
}

.k-card-icon {
    width: 76px;
    height: 76px;
    border-radius: 20px;
    background: var(--k-primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.k-card h3 {
    font-size: 1.3rem;
    margin: 0 0 8px;
}

.k-card p {
    color: var(--k-muted);
    margin: 0;
}

/* ---------- Por qué elegirnos ---------- */
.k-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.k-split-media img {
    width: 100%;
    display: block;
    border-radius: 24px;
    box-shadow: var(--k-shadow-hover);
    object-fit: cover;
}

.k-split h2 {
    font-size: clamp(1.7rem, 3.5vw, 2.3rem);
    margin: 0 0 16px;
}

.k-split p {
    color: var(--k-muted);
    font-size: 1.1rem;
}

.k-checklist {
    list-style: none;
    padding: 0;
    margin: 24px 0 32px;
}

.k-checklist li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 14px;
}

.k-checklist i {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--k-primary-soft);
    color: var(--k-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    margin-top: 1px;
}

@media (max-width: 900px) {
    .k-split {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* ---------- Pasos ---------- */
.k-step {
    text-align: center;
    padding: 8px 16px;
}

.k-step-num {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--k-primary);
    color: #fff;
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(11, 107, 203, 0.3);
}

.k-step h3 {
    font-size: 1.2rem;
    margin: 0 0 6px;
}

.k-step p {
    color: var(--k-muted);
    margin: 0;
}

/* ---------- Banda CTA ---------- */
.k-cta {
    background: linear-gradient(120deg, var(--k-primary) 0%, #2a8ff0 100%);
    color: #fff;
    border-radius: 24px;
    padding: 48px 40px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    box-shadow: var(--k-shadow-hover);
}

.k-cta h2 {
    color: #fff;
    margin: 0 0 6px;
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.k-cta p {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}

.k-cta .k-btn-light {
    background: #fff;
    color: var(--k-primary) !important;
}

/* ---------- Footer ---------- */
.k-footer {
    background: var(--k-dark);
    color: rgba(255, 255, 255, 0.78);
    padding: 64px 0 24px;
}

.k-footer h3, .k-footer h4 {
    color: #fff;
}

.k-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}

.k-footer a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
}

.k-footer a:hover {
    color: #fff;
    text-decoration: underline;
}

.k-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.k-footer li {
    margin-bottom: 10px;
}

.k-footer li i {
    width: 22px;
    color: #8cc4ff;
}

.k-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 40px;
    padding-top: 20px;
    font-size: .9rem;
    text-align: center;
}

@media (max-width: 800px) {
    .k-footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .k-section {
        padding: 64px 0;
    }

    .k-cta {
        padding: 36px 24px;
    }
}

/* ---------- Video de demostración ---------- */
.k-demo {
    display: grid;
    grid-template-columns: minmax(0, 360px) 1fr;
    gap: 64px;
    align-items: center;
    justify-content: center;
}

.k-demo h2 {
    font-size: clamp(1.7rem, 3.5vw, 2.3rem);
    margin: 0 0 16px;
}

.k-demo p {
    color: var(--k-muted);
    font-size: 1.1rem;
}

.k-demo-video {
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
    padding: 10px;
    background: var(--k-dark);
    border-radius: 32px;
    box-shadow: var(--k-shadow-hover);
}

.k-demo-video video {
    display: block;
    width: 100%;
    aspect-ratio: 404 / 720;
    object-fit: cover;
    border-radius: 24px;
    background: #000;
}

.k-btn-outline {
    background: transparent;
    color: var(--k-primary) !important;
    border-color: var(--k-primary);
}

.k-btn-outline:hover {
    background: var(--k-primary-soft);
}

@media (max-width: 900px) {
    .k-demo {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .k-demo-video {
        max-width: 300px;
    }
}

/* ---------- WhatsApp flotante ---------- */
.k-whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 28px;
    right: 28px;
    background-color: var(--k-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 10px 24px rgba(37, 211, 102, 0.45);
    z-index: 100;
    text-decoration: none;
    transition: transform .2s ease;
}

.k-whatsapp-float:hover {
    transform: scale(1.08);
    color: #fff;
}

.k-whatsapp-float::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6);
    animation: k-pulse 2.4s infinite;
}

@keyframes k-pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .k-whatsapp-float::after { animation: none; }
    .k-btn, .k-card { transition: none; }
}