/* --- VARIABLES Y BASE KORTEXBR3ACH --- */
:root {
    --primary: #00ff41; /* Verde neón */
    --bg: #0d0d0d;
    --surface: #1a1a1a;
    --text: #f0f0f0;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    overflow-x: hidden;
}

/* --- FONDO DE PARTÍCULAS --- */
.dynamic-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
    background-color: #0d0d0d;
}

.particle {
    position: absolute;
    color: var(--primary);
    font-size: 14px;
    opacity: 0;
    animation: fadeAndMove 10s infinite;
}

@keyframes fadeAndMove {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.1; }
    100% { transform: translateY(100vh) translateX(50px); opacity: 0; }
}

/* --- HEADER Y NAVEGACIÓN PROFESIONAL --- */
header {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--primary);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 95%; 
    margin: 0 auto;
    gap: 20px;
}

/* LADO IZQUIERDO: BRANDING (Aumentado) */
.branding {
    flex: 0 1 auto;
    min-width: 450px; /* Espacio reservado para que no se achique */
}

.branding h1 {
    color: var(--primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 1.8rem; /* Tamaño grande solicitado */
    white-space: nowrap;
}

.alias { 
    font-size: 1rem; 
    color: #888; 
    margin-top: 5px;
}

.alias span { color: var(--primary); font-weight: bold; }
.course { font-size: 0.85rem; color: #666; margin: 2px 0; }

/* LADO DERECHO: MENÚ Y DROPDOWN */
nav {
    flex: 1 0 auto;
    display: flex;
    justify-content: flex-end;
}

nav ul {
    display: flex;
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: var(--text);
    padding: 8px 12px;
    font-size: 0.85rem;
    border: 1px solid transparent;
    border-radius: 4px;
    transition: 0.3s ease;
    white-space: nowrap;
}

nav a:hover, nav a.active {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 255, 65, 0.05);
}

/* LÓGICA DEL MENÚ PLEGABLE */
.dropdown {
    position: relative;
}

.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(13, 13, 13, 0.98);
    border: 1px solid var(--primary);
    min-width: 200px;
    z-index: 9999;
    padding: 10px 0;
    margin: 0;
    list-style: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

/* El truco para que aparezca al pasar el mouse */
.dropdown:hover .submenu {
    display: block;
}

.submenu li a {
    display: block;
    width: 100%;
    padding: 10px 20px;
    border: none !important;
    font-size: 0.8rem;
}

.submenu li a:hover {
    background: rgba(0, 255, 65, 0.1);
}

/* --- SECCIONES --- */
.section-container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 30px;
    background: var(--surface);
    border-left: 4px solid var(--primary);
}

h2 {
    color: var(--primary);
    font-family: 'Courier New', monospace;
    text-transform: uppercase;
}

/* --- RESPONSIVIDAD MÓVIL --- */
@media (max-width: 1100px) {
    .header-container { flex-direction: column; text-align: center; }
    .branding { min-width: 100%; }
    nav ul { flex-wrap: wrap; justify-content: center; margin-top: 15px; }
}