/* Hoja de estilo realizada con IA */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: system-ui, sans-serif;
    background: #f5f4f0;
    color: #1a1a1a;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.card {
    background: #fff;
    border: 0.5px solid #ddd;
    border-radius: 16px;
    padding: 2rem;
    width: 100%;
    max-width: 520px;
}

/* ── Encabezado ── */

.quiz-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.quiz-title {
    font-size: 0.7rem;
    font-weight: 500;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.quiz-progress {
    font-size: 0.75rem;
    color: #aaa;
}

/* ── Barra de progreso ── */

.progress-bar {
    height: 4px;
    background: #eee;
    border-radius: 2px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #1a1a1a;
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* ── Pregunta ── */

#pregunta {
    font-size: 1.05rem;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    min-height: 3rem;
}

/* ── Opciones ── */

#opciones {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 1.5rem;
}

.opcion {
    width: 100%;
    text-align: left;
    padding: 12px 16px;
    background: #f5f4f0;
    border: 0.5px solid #ddd;
    border-radius: 8px;
    font-size: 0.875rem;
    color: #1a1a1a;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.opcion:hover:not(:disabled) {
    background: #edecea;
    border-color: #bbb;
}

.opcion:disabled { cursor: default; }

.opcion.correcta {
    background: #eaf3de;
    border-color: #639922;
    color: #3b6d11;
}

.opcion.incorrecta {
    background: #fcebeb;
    border-color: #e24b4a;
    color: #a32d2d;
}

/* ── Feedback ── */

#feedback {
    font-size: 0.8rem;
    min-height: 1.2rem;
    color: #555;
    margin-bottom: 1.25rem;
}

/* ── Botones de acción ── */

.btn {
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    border: 0.5px solid #ccc;
    background: #1a1a1a;
    color: #fff;
    cursor: pointer;
    transition: opacity 0.15s;
}

.btn:hover { opacity: 0.85; }

.btn-secondary {
    background: transparent;
    color: #1a1a1a;
}

/* ── Pantalla de resultado ── */

#resultado {
    text-align: center;
    padding: 1rem 0;
}

.resultado-score {
    font-size: 3rem;
    font-weight: 500;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.resultado-label {
    font-size: 0.875rem;
    color: #888;
    margin-bottom: 0.5rem;
}

.resultado-msg {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 2rem;
}