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

body {
    font-family: 'Roboto', sans-serif;
    color: white;
    min-height: 100vh;
    overflow-x: hidden;
}

/* --- FONDO MAXIMIZADO --- */
.background-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('img/mi-fondo.jpg') no-repeat center center;
    background-size: cover; 
    z-index: -2;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 100%);
    z-index: -1;
}

/* --- MENÚ SUPERIOR (NAVBAR) --- */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px); /* Efecto cristalizado */
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .logo {
    font-family: 'Oswald', sans-serif;
    font-size: 1.5rem;
    letter-spacing: 3px;
    color: #ff0000;
}

.navbar ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.navbar ul li a {
    text-decoration: none;
    color: white;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}

.navbar ul li a:hover {
    color: #ff0000;
}

/* --- CONTENEDOR DE CONTENIDO --- */
.container {
    padding: 120px 0 60px 60px; /* 120px arriba para no chocar con el menú */
}

.sidebar {
    width: 500px; 
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.section-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.6rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

/* --- TARJETAS DE VIDEO --- */
.video-card {
    background: rgba(0, 0, 0, 0.7);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease;
}

.video-card:hover {
    transform: translateX(10px);
    border-color: rgba(255, 0, 0, 0.5);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-info {
    padding: 15px;
}

.tag {
    color: #ff0000;
    font-size: 0.7rem;
    font-weight: bold;
    text-transform: uppercase;
}

.video-info h3 {
    font-size: 1.1rem;
    font-weight: 300;
}

/* Móvil */
@media (max-width: 768px) {
    .navbar { padding: 15px 20px; flex-direction: column; gap: 10px; }
    .navbar ul { gap: 15px; }
    .container { padding: 150px 20px 40px 20px; }
    .sidebar { width: 100%; }
}