/* ==============================================
   NDS · Netrun Digital Solutions — Styles
   Paleta corporativa con acentos neón azul/cian
   ============================================== */

:root {
    /* Fondo */
    --color-bg: #030811;
    --color-bg-alt: #0A162B;

    /* Primario / secundario / terciario */
    --color-primary: #004BFF;
    --color-secondary: #00F0FF;
    --color-tertiary: #FFFFFF;

    /* Texto */
    --color-text: var(--color-tertiary);
    --color-muted: #6B7C96;

    /* Superficies */
    --color-surface: rgba(10, 22, 43, 0.8);
    --color-surface-solid: #0A162B;
    --color-border: rgba(0, 240, 255, 0.25);

    /* Gradientes */
    --gradient-brand: radial-gradient(circle at 50% 30%, #0A162B 0%, #030811 70%);
    --gradient-btn: linear-gradient(90deg, #004BFF, #00F0FF);

    /* Resplandor (glow) */
    --shadow-glow-primary: 0 0 15px rgba(0, 75, 255, 0.5);
    --shadow-glow-secondary: 0 0 15px rgba(0, 240, 255, 0.35);

    /* Geometría */
    --radius-card: 14px;
    --radius-btn: 8px;
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
    --header-height: 72px;
    --container-width: 1180px;
}

/* ── Reset & base ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

/* ── Layout helpers ── */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.25rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.section-lead {
    max-width: 640px;
    color: var(--color-muted);
    font-size: 1.05rem;
    margin-bottom: 3rem;
}

/* ── Cards (vidrio con acento neón) ── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    backdrop-filter: blur(10px);
    padding: 2rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card), var(--shadow-glow-secondary);
    border-color: var(--color-secondary);
}

.card-icon {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
    color: var(--color-text);
}

.card p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

.card-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.card-link:hover {
    color: var(--color-tertiary);
}

/* ── Buttons ── */
.btn-primary {
    display: inline-block;
    padding: 0.85rem 2rem;
    background: var(--gradient-btn);
    color: #ffffff;
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: var(--shadow-glow-primary);
    transition: filter 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-primary), var(--shadow-glow-secondary);
}

.btn-secondary {
    display: inline-block;
    padding: 0.8rem 1.9rem;
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 1rem;
    transition: border-color 0.2s, background-color 0.2s;
}

.btn-secondary:hover {
    border-color: var(--color-secondary);
    background-color: rgba(0, 240, 255, 0.08);
}

/* ── Reveal-on-scroll ── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Header & Navigation ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(10, 13, 20, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s, background-color 0.2s;
}

.site-header.is-scrolled {
    background-color: rgba(10, 13, 20, 0.97);
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: var(--header-height);
}

.nav-brand {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    background: var(--gradient-btn);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    flex-shrink: 0;
}

.nav-brand-sub {
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-muted);
    -webkit-text-fill-color: var(--color-muted);
}

.nav-links {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
    gap: 1.75rem;
}

.nav-links a {
    color: var(--color-muted);
    font-size: 0.92rem;
    font-weight: 500;
    transition: color 0.2s;
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-links .nav-cta {
    padding: 0.5rem 1.1rem;
    background: var(--gradient-btn);
    color: #ffffff;
    border-radius: var(--radius-btn);
    font-weight: 700;
}

.nav-links .nav-cta:hover {
    color: #ffffff;
    filter: brightness(1.1);
    box-shadow: var(--shadow-glow-primary);
}

/* Logotipo, a la derecha del nav */
.nav-logo-slot {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px;
}

.nav-logo-slot img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ── Hero section ── */
.hero {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--gradient-brand);
    text-align: center;
    padding: 5rem 1.5rem 3rem;
}

.hero-content {
    max-width: 760px;
}

.hero-title {
    font-size: clamp(2.1rem, 5vw, 3.6rem);
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}

.hero-title .accent {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.2vw, 1.2rem);
    color: var(--color-muted);
    margin-bottom: 2.25rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* ── About / Descubrí NDS ── */
.about {
    padding: 6rem 0;
    background-color: var(--color-bg);
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}

/* ── Productos ── */
.products {
    padding: 6rem 0;
    background-color: var(--color-bg-alt);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2rem;
}

.product-card {
    padding: 0;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 2;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--gradient-btn);
    color: #ffffff;
    box-shadow: var(--shadow-glow-primary);
}

.product-badge-alt {
    background: rgba(10, 22, 43, 0.85);
    border: 1px solid var(--color-border);
    color: var(--color-secondary);
    box-shadow: none;
}

.product-shot {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.product-shot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
    transition: transform 0.4s ease;
}

.product-card:hover .product-shot img {
    transform: scale(1.04);
}

.product-body {
    padding: 1.75rem 2rem 2rem;
}

.product-body h3 {
    font-size: 1.3rem;
    margin-bottom: 0.6rem;
}

.product-body p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* ── Soluciones ── */
.solutions {
    padding: 6rem 0;
    background-color: var(--color-bg);
}

.solutions-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.solution-row {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    backdrop-filter: blur(10px);
    padding: 1.75rem 2rem;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.solution-row:hover {
    border-color: var(--color-secondary);
    box-shadow: var(--shadow-glow-secondary);
    transform: translateX(4px);
}

.solution-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.solution-copy h3 {
    margin-bottom: 0.35rem;
    color: var(--color-text);
}

.solution-copy p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* ── Blog ── */
.blog {
    padding: 6rem 0;
    background-color: var(--color-bg-alt);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.blog-status {
    color: var(--color-muted);
    grid-column: 1 / -1;
}

.blog-card {
    display: flex;
    flex-direction: column;
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.blog-card h3 {
    margin-bottom: 0.6rem;
}

.blog-card p {
    color: var(--color-muted);
    font-size: 0.9rem;
    flex: 1;
}

/* ── Contacto ── */
.contact {
    padding: 6rem 0;
    background-color: var(--color-bg);
}

.contact-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.contact-lead {
    margin: 0 auto;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    width: 100%;
    max-width: 780px;
    margin: 3rem 0 3rem;
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.75rem 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    backdrop-filter: blur(10px);
    transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.contact-item:hover {
    border-color: var(--color-secondary);
    box-shadow: var(--shadow-glow-secondary);
    transform: translateY(-4px);
}

.contact-item a,
.contact-item span:last-child {
    color: var(--color-text);
    font-size: 1rem;
    font-weight: 600;
    transition: color 0.2s;
}

.contact-item a:hover {
    color: var(--color-secondary);
}

.contact-label {
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.contact-cta {
    margin-top: 0.5rem;
}

/* ── Footer ── */
.site-footer {
    background-color: var(--color-bg-alt);
    color: var(--color-muted);
    padding-top: 4rem;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 2.5rem;
    padding-bottom: 3rem;
}

.footer-brand .nav-brand {
    margin-bottom: 0.75rem;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-muted);
    max-width: 260px;
}

.footer-col h4 {
    color: var(--color-text);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-col a {
    color: var(--color-muted);
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    text-align: center;
    padding: 1.5rem;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--color-secondary);
    transition: color 0.2s;
}

.footer-bottom a:hover {
    color: var(--color-tertiary);
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-logo-slot {
        display: none;
    }

    .nav-links {
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        background-color: rgba(10, 13, 20, 0.97);
        border-bottom: 1px solid var(--color-border);
        padding: 1rem 1.5rem 1.5rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .nav-links.is-open {
        max-height: 420px;
        padding: 1rem 1.5rem 1.5rem;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.6rem 0;
    }

    .nav-links .nav-cta {
        display: inline-block;
        margin-top: 0.5rem;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}