/* VARIABLES DE COLOR (Inspiradas en tus fotos) */
:root {
    --bg-color: #0a0b10;       /* Fondo oscuro profundo */
    --panel-bg: #121420;       /* Fondo de las cajas de componentes */
    --neon-cyan: #00f3ff;      /* El azul led/láser de tus imágenes */
    --neon-pink: #ff007f;      /* El rosa/morado de las válvulas */
    --text-main: #e2e8f0;      /* Texto principal limpio */
    --text-muted: #718096;     /* Texto secundario apagado */
    --border-glow: #1a1f36;
}

/* CONFIGURACIÓN BASE RECONSTRUCTIVA */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
    /* Compensa la altura del menú fijo al hacer scroll hacia un ID */
    scroll-padding-top: 120px; 
}

/* MENÚ SUPERIOR RESPONSIVE & ESCALABLE */
header {
    background-color: rgba(18, 20, 32, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--neon-cyan);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-family: monospace;
    font-weight: bold;
    font-size: 1.4rem;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: 1px;
}

.logo span {
    color: var(--neon-pink);
    text-shadow: 0 0 8px var(--neon-pink);
}

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

nav a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease, text-shadow 0.3s ease;
    font-family: monospace;
}

nav a:hover, nav a.active {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px var(--neon-cyan);
}

/* CONTENEDOR PRINCIPAL FORMAL */
main {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 2rem;
}

.hero {
    text-align: center;
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.hero p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* REJILLA DE COMPONENTES / SECCIONES (GRID RESPONSIVE) */
.grid-sections {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.card {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-glow);
    border-radius: 6px;
    padding: 2rem;
    position: relative;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Detalle de ánodo/cátodo */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    width: 40px;
    height: 3px;
    background: var(--neon-pink);
    box-shadow: 0 0 8px var(--neon-pink);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.15);
}

.card h2 {
    font-family: monospace;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.btn-link {
    display: inline-block;
    color: var(--neon-cyan);
    text-decoration: none;
    font-family: monospace;
    font-size: 0.9rem;
    font-weight: bold;
    transition: color 0.2s;
}

.btn-link:hover {
    color: var(--neon-pink);
}

/* PIE DE PÁGINA MODERNO */
footer {
    border-top: 1px solid var(--border-glow);
    background-color: rgba(18, 20, 32, 0.4);
    margin-top: 5rem;
    padding: 3rem 2rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: monospace;
    font-size: 0.9rem;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.footer-links a:hover {
    color: var(--neon-pink);
    text-shadow: 0 0 8px var(--neon-pink);
}

/* TRUCO ANTI-BOTS: Invierte el texto por software */
.anti-bot {
    unicode-bidi: bidi-override;
    direction: rtl;
    cursor: pointer;
}

.footer-credits {
    color: var(--text-muted);
    font-family: monospace;
    font-size: 0.85rem;
}

/* Ajuste responsive para móviles */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        justify-content: center;
        gap: 1.5rem;
    }
}

/* RESPONSIVE DESIGN (MÓVILES) */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    nav ul {
        gap: 1.2rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    .hero h1 {
        font-size: 2rem;
    }
}