/* ============================================================
   Nívisix Soluciones — Página principal
   Paleta: azul cobalto #3E6EC4 + teal #00A8B5 (del logo)
   Tipografía: JetBrains Mono (terminal)
   ============================================================ */

/* ===== Variables ===== */
:root {
    /* Colores del logo */
    --blue:         #3E6EC4;
    --blue-light:   #5585D8;
    --teal:         #00A8B5;
    --teal-light:   #00C4D4;
    /* Fondo oscuro con tono azul marino */
    --bg:           #070b14;
    --bg-secondary: #0c1220;
    --bg-card:      #101828;
    --bg-card-hover:#141f33;
    /* Bordes */
    --border:       #1a2640;
    --border-hover: #2a3d60;
    /* Texto */
    --text:         #e8edf5;
    --text-muted:   #6b7fa0;
    /* Gradiente de marca */
    --grad:         linear-gradient(135deg, var(--blue) 0%, var(--teal) 100%);
    /* Layout */
    --radius:       10px;
    --radius-lg:    18px;
    --font:         'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    --max-w:        1160px;
    --nav-h:        68px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: var(--font); }

/* ===== Contenedor ===== */
.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 28px;
}

/* ============================================================
   NAVEGACIÓN
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    background: rgba(7, 11, 20, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;          /* espacio entre logo y links */
}

/* Logo con fondo blanco tipo píldora */
.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius);
    padding: 5px 10px;
    height: 46px;
    transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.88; }
.nav-logo img {
    height: 34px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 36px;
    align-items: center;
    margin-left: auto;
}

.nav-link {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
    position: relative;
    transition: color 0.2s ease;
    letter-spacing: 0.03em;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--grad);
    transition: width 0.25s ease;
}
.nav-link:hover           { color: var(--text); }
.nav-link:hover::after    { width: 100%; }

/* Hamburguesa */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    margin-left: auto;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.2s ease;
}

/* Menú móvil */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    z-index: 99;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 12px 28px 20px;
    flex-direction: column;
}
.mobile-menu.open { display: flex; }
.mobile-link {
    font-size: 14px;
    color: var(--text-muted);
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    transition: color 0.2s;
    letter-spacing: 0.03em;
}
.mobile-link:last-child { border-bottom: none; }
.mobile-link:hover { color: var(--text); }

/* ============================================================
   BOTONES
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    letter-spacing: 0.02em;
}
.btn-primary {
    background: var(--grad);
    color: #fff;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 168, 181, 0.35);
    filter: brightness(1.1);
}
.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: rgba(255,255,255,0.03);
}
.btn-full { width: 100%; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    min-height: calc(100vh - var(--nav-h));
    display: flex;
    align-items: center;
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

/* Glows de fondo usando los colores del logo */
.hero::before {
    content: '';
    position: absolute;
    top: -150px; left: -8%;
    width: 65%; height: 750px;
    background: radial-gradient(ellipse at 30% 40%,
        rgba(62, 110, 196, 0.13) 0%,
        transparent 65%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -80px; right: -5%;
    width: 55%; height: 550px;
    background: radial-gradient(ellipse at 65% 55%,
        rgba(0, 168, 181, 0.10) 0%,
        transparent 65%);
    pointer-events: none;
}

.hero-content { max-width: 800px; position: relative; z-index: 1; }

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 28px;
    padding: 6px 14px;
    border: 1px solid rgba(0, 168, 181, 0.3);
    border-radius: 999px;
    background: rgba(0, 168, 181, 0.07);
}
.hero-label::before {
    content: '>';
    color: var(--blue-light);
    font-weight: 700;
}

.hero-title {
    font-size: clamp(34px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.06;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 24px;
}
.hero-accent {
    background: var(--grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-muted);
    max-width: 540px;
    line-height: 1.7;
    margin-bottom: 44px;
    letter-spacing: 0.01em;
}

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

/* ============================================================
   ENCABEZADOS DE SECCIÓN
   ============================================================ */
.section-header { margin-bottom: 52px; }

.section-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-label::before {
    content: '//';
    color: var(--blue-light);
    opacity: 0.7;
}

.section-title {
    font-size: clamp(24px, 3vw, 38px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.12;
}

/* ============================================================
   PROYECTOS (antes Servicios)
   ============================================================ */
.services {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Toda la tarjeta es un enlace */
.service-card {
    display: flex;
    flex-direction: column;
    gap: 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    color: inherit;
    position: relative;
    overflow: hidden;
    transition: border-color 0.25s ease, transform 0.25s ease,
                box-shadow 0.25s ease, background 0.25s ease;
}
/* Línea de acento superior */
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--grad);
    opacity: 0;
    transition: opacity 0.25s ease;
}
.service-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5),
                0 0 0 1px var(--border-hover);
}
.service-card:hover::before { opacity: 1; }

/* Imágenes de logo con borde redondeado */
.service-icon {
    width: 100%;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.96);
    border-radius: 14px;
    overflow: hidden;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.15);
}
.service-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.service-title {
    font-size: 15px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text);
    letter-spacing: -0.01em;
}

.service-desc {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    letter-spacing: 0.01em;
}

.service-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--teal);
    letter-spacing: 0.05em;
    margin-top: 4px;
    transition: gap 0.2s ease;
}
.service-card:hover .service-arrow { gap: 10px; }

/* ============================================================
   EQUIPO SEMINUEVO
   ============================================================ */
.equipos {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.equipos-desc {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.75;
    width: 100%;
    margin-bottom: 44px;
    letter-spacing: 0.01em;
}

.pdf-viewer-wrapper {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 16px;
}

.pdf-frame {
    display: block;
    width: 100%;
    height: 680px;
    border: none;
}

.pdf-download-bar {
    display: flex;
    justify-content: flex-end;
}

/* ============================================================
   CONTACTO
   ============================================================ */
.contact {
    padding: 100px 0 120px;
    border-top: 1px solid var(--border);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 36px;
    letter-spacing: 0.01em;
}

.contact-details { margin-bottom: 32px; }

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
    transition: color 0.2s;
}
.contact-detail-item:hover { color: var(--text); }
.contact-detail-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--teal);
}

/* Redes sociales con íconos */
.contact-social {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.social-icon-link {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
}
.social-icon-link svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}
.social-icon-link:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-1px);
}
.social-icon-link.facebook:hover { border-color: #4267B2; color: #7a9ee8; }
.social-icon-link.twitter:hover  { border-color: #1DA1F2; color: #6cc5f5; }
.social-icon-link.instagram:hover { border-color: #E1306C; color: #f07099; }

/* Formulario */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text);
    font-size: 13px;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.2s ease, background 0.2s ease;
    resize: vertical;
    letter-spacing: 0.01em;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--teal);
    background: var(--bg-card-hover);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-left { display: flex; flex-direction: column; gap: 3px; }

.footer-logo {
    font-size: 13px;
    font-weight: 700;
    background: var(--grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-copy {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-social {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    background: var(--bg-card);
    transition: all 0.2s ease;
}
.footer-social svg { width: 15px; height: 15px; }
.footer-social:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 460px;
    }
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 52px;
    }
}

@media (max-width: 640px) {
    .nav-links  { display: none; }
    .nav-toggle { display: flex; }
    .hero       { padding: 60px 0 80px; }
    .hero-cta   { flex-direction: column; }
    .btn        { width: 100%; }
    .footer-inner { flex-direction: column; align-items: flex-start; }
    .pdf-frame  { height: 420px; }
    .pdf-download-bar { justify-content: stretch; }
}