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

/* BODY - Fondo más profundo con un toque rojizo */
body{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0f0505; /* Casi negro con matiz rojo */
    color: #f5f5f5;
    line-height: 1.6;
    overflow-x: hidden;
}

/* BARRA DE PROGRESO - Ahora en Rojo-Naranja vibrante */
.barra-progreso {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 6px;
    background: linear-gradient(to right, #ff0000, #ff8800);
    z-index: 9999;
    box-shadow: 0 0 10px #ff0000;
}

/* HEADER - Estilo Cyberpunk */
header {
    background: #1a0a0a;
    padding: 30px 20px;
    text-align: center;
    border-bottom: 4px solid #ef4444;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.2);
}

header h1 {
    color: #ef4444;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

/* NAV */
nav ul {
    display: flex;
    justify-content: center;
    gap: 15px;
    list-style: none;
    flex-wrap: wrap;
    margin-top: 20px;
}

nav a {
    text-decoration: none;
    color: white;
    background: transparent;
    border: 2px solid #ef4444;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    transition: 0.3s all ease;
}

nav a:hover {
    background: #ef4444;
    color: #000;
    box-shadow: 0 0 15px #ef4444;
    transform: translateY(-3px);
}

/* MAIN */
main {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* SECCIONES DE TEXTO - Para quitar el error de "Relleno" */
.quiz-info-extensa, .quiz-footer-info {
    background: #1f1111;
    padding: 30px;
    border-radius: 10px;
    border-left: 5px solid #ef4444;
    margin-bottom: 40px;
}

/* CONTENEDOR DEL FORMULARIO */
.quiz-container {
    background: #1a0a0a;
    padding: 30px;
    border-radius: 20px;
    border: 1px solid #331111;
}

/* ESTILO DE PREGUNTAS (Fieldset) */
fieldset.pregunta {
    border: 1px solid #441111;
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 10px;
    background: #150808;
}

legend {
    color: #ef4444;
    font-weight: bold;
    padding: 0 10px;
    text-transform: uppercase;
    font-size: 0.9em;
}

.item h3 {
    color: #fca5a5; /* Rojo muy claro para lectura fácil */
    font-size: 1.1em;
    margin: 15px 0;
}

/* INPUTS Y LABELS */
label {
    display: block;
    background: #2a1111;
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.2s;
    border: 1px solid transparent;
}

label:hover {
    background: #3d1a1a;
    border-color: #ef4444;
}

input[type="radio"] {
    margin-right: 10px;
    accent-color: #ef4444;
}

/* CTA buttons */
.btn-cta {
    display: inline-block;
    padding: 14px 28px;
    background: linear-gradient(135deg, #ef4444, #991b1b);
    color: #fff !important;
    font-weight: 700;
    text-decoration: none;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
    text-align: center;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.btn-cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.6);
    background: linear-gradient(135deg, #dc2626, #7f1d1d);
}

/* BOTÓN DE CALIFICAR */
#calificarBtn {
    width: 100%;
    background: #ef4444;
    color: white;
    font-size: 1.2em;
    font-weight: bold;
    text-transform: uppercase;
    padding: 15px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 5px 0 #991b1b;
    transition: 0.2s;
}

#calificarBtn:hover {
    background: #ff5555;
    transform: translateY(2px);
    box-shadow: 0 3px 0 #991b1b;
}

#calificarBtn:active {
    transform: translateY(5px);
    box-shadow: none;
}

/* RESULTADOS */
.resultado-box {
    margin-top: 25px;
    padding: 20px;
    text-align: center;
    font-size: 1.4em;
    border-radius: 10px;
    background: #2a1111;
    border: 2px dashed #ef4444;
}

/* BADGE Y EFECTOS */
.badge-check {
    background: #ef4444;
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7em;
    box-shadow: 0 0 5px #ef4444;
}

.seccion-enfocada {
    border: 2px solid #ef4444 !important;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
    transform: scale(1.01);
}

/* Enlaces en FAQ */
.faq-section a {
    color: #ef4444;
    text-decoration: underline;
}
.faq-section a:hover {
    color: #ff5555;
}

/* Ajustes responsive para el grid principal */
.grid-container {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 25px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 30px 20px;
}

.main-content {
    min-width: 0;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar > div {
    background: #1a0a0a;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #331111;
}

.sidebar h3 {
    color: #ef4444;
    margin-bottom: 10px;
}

.sidebar p, .sidebar dd, .sidebar li {
    color: #cbd5e1;
    font-size: 0.9rem;
    line-height: 1.6;
}

.sidebar dl dt {
    margin-top: 10px;
}

.sidebar dl dd {
    margin-left: 10px;
    margin-bottom: 8px;
}

.sidebar ol {
    margin-left: 20px;
}

.sidebar li {
    margin-bottom: 5px;
}

/* RESPONSIVE */
@media(max-width: 768px){
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav a {
        display: inline-block;
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    
    header h1 {
        font-size: 1.5em;
    }

    .grid-container {
        grid-template-columns: 1fr;
        padding: 15px;
    }

    .sidebar {
        order: 2;
    }

    .intro-box h2 {
        font-size: 1.3rem;
    }

    .pregunta-card h3 {
        font-size: 0.95rem;
    }

    .quiz-group {
        padding: 12px;
    }
}

@media(max-width: 480px) {
    .grid-container {
        padding: 10px;
    }

    .intro-box {
        padding: 15px;
    }

    .pregunta-card {
        padding: 10px;
    }

    label {
        padding: 10px;
        font-size: 0.9rem;
    }

    #calificarBtn {
        font-size: 1rem;
        padding: 12px;
    }
}