/* ============================================
   Tema: Oscuro · Moderno · Minimalista · Profesional
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg: #0a0a0c;
    --bg-elevado: #111113;
    --bg-card: #0e0e10;
    --border: rgba(255, 255, 255, 0.06);
    --border-focus: rgba(255, 255, 255, 0.12);
    --matrix: #00ff41;
    --matrix-bright: #00ff88;
    --matrix-dim: rgba(0, 255, 65, 0.5);
    --text: #fafafa;
    --text-muted: rgba(250, 250, 250, 0.65);
    --accent: rgba(255, 255, 255, 0.9);
    --accent-hover: #ffffff;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 6px;
    --space: 1.5rem;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* Header: fondo con código verde (tipo WinOLS) detrás del logo y menú */
.header {
    position: sticky;
    top: 0;
    overflow: hidden;
    z-index: 100;
    border-bottom: 1px solid var(--matrix-dim);
    background: transparent;
}

.header__code-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    min-height: 100%;
    pointer-events: none;
    background-color: transparent;
}

.header .nav {
    position: relative;
    z-index: 1;
}

.nav {
    max-width: 960px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity var(--transition);
}

.logo:hover {
    opacity: 0.9;
}

.logo img,
.logo svg {
    height: 32px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.activo {
    color: var(--matrix);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.menu-toggle span {
    width: 20px;
    height: 1.5px;
    background: var(--matrix);
    border-radius: 1px;
    transition: transform 0.25s, opacity 0.25s;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 5rem 1.5rem;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.04em;
    color: var(--matrix);
    margin-bottom: var(--space);
    max-width: 20ch;
}

.hero p {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 420px;
    margin-bottom: 2rem;
}

/* Botón primario — sobrio */
.btn {
    padding: 0.65rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--font);
    border: 1px solid var(--border-focus);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn-primary {
    background: var(--matrix);
    color: var(--bg);
    border-color: transparent;
}

.btn-primary:hover {
    background: var(--matrix-bright);
}

/* Botones "Ver servicios" y "Envía aquí tu archivo": estáticos al pasar el cursor */
#ctaBtn:hover,
a.btn-whatsapp:hover {
    background: var(--matrix);
    color: var(--bg);
}

/* Solo al pulsar: se marca negro; al soltar vuelve al verde */
#ctaBtn:active,
a.btn-whatsapp:active {
    outline: none;
    background: var(--bg);
    color: var(--text-muted);
}

#ctaBtn:focus,
#ctaBtn:focus-visible,
a.btn-whatsapp:focus,
a.btn-whatsapp:focus-visible {
    outline: none;
}

/* Sección Servicios */
.servicios {
    max-width: 960px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
}

.servicios h2 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--matrix);
    margin-bottom: 2.5rem;
    text-align: center;
}

.tarjetas {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.tarjeta {
    background: var(--bg-card);
    padding: 2rem 1.75rem;
    transition: background var(--transition);
    text-align: center;
}

.tarjeta:hover {
    background: var(--bg-elevado);
}

.tarjeta-icono {
    display: none;
}

.tarjeta h3 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.35rem;
    color: var(--text);
}

.tarjeta p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Nosotros */
.nosotros {
    max-width: 560px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
    text-align: center;
}

.nosotros h2 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--matrix);
    margin-bottom: 1rem;
}

.nosotros p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* Contacto — botón WhatsApp */
.contacto {
    max-width: 480px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
    text-align: center;
}

.contacto h2 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.contacto .btn-whatsapp {
    display: inline-block;
    text-decoration: none;
}

.contacto__hint {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    margin-top: auto;
    padding: 2rem 1.5rem;
    text-align: center;
}

.footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Tablet: 2 columnas en servicios */
@media (max-width: 768px) {
    .tarjetas {
        grid-template-columns: 1fr;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--bg-elevado);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0.5rem;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.25s, opacity 0.25s;
    }

    .nav-links.activo {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .menu-toggle.activo span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }

    .menu-toggle.activo span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.activo span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }
}

/* Móvil pequeño */
@media (max-width: 480px) {
    .hero {
        min-height: 100vh;
        padding: 3rem 1rem;
    }

    .servicios,
    .nosotros,
    .contacto {
        padding: 3rem 1rem;
    }
}