/* --- VARIABLES GLOBALES --- */
:root {
    --opos-primary: #2271b1;
    --opos-primary-hover: #135e96;
    --opos-success: #28a745;
    --opos-danger: #dc3545;
    --opos-bg-light: #f8f9fa;
    --opos-border: #ccd0d4;
    --opos-text: #2c3338;
}

/* --- CONTENEDOR PRINCIPAL --- */
.opos-wrapper {
    max-width: 850px;
    margin: 20px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: var(--opos-text);
}

.opos-card {
    background: #fff;
    border: 1px solid var(--opos-border);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* --- INTERFAZ DEL EXAMEN (Preguntas) --- */
.opos-question-title {
    font-size: 1.4rem;
    margin-bottom: 25px;
    line-height: 1.3;
}

.opos-options-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ESTO ES LO QUE HACÍA QUE NO SE PUDIERA SELECCIONAR */
.opos-option {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    border: 2px solid var(--opos-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #fff;
}

.opos-option:hover {
    border-color: var(--opos-primary);
    background-color: var(--opos-bg-light);
}

.opos-option.selected {
    border-color: var(--opos-primary);
    background-color: #f0f6fb;
    box-shadow: 0 0 0 1px var(--opos-primary);
}

.option-letter {
    font-weight: bold;
    margin-right: 15px;
    color: var(--opos-primary);
}

/* Feedback instantáneo */
.opos-option.feedback-correct { 
    border-color: #28a745 !important; 
    background-color: #e6ffed !important; 
    position: relative;
}
.opos-option.feedback-correct::after { content: " ✅"; font-weight: bold; margin-left: auto; }

.opos-option.feedback-incorrect { 
    border-color: #dc3545 !important; 
    background-color: #ffeef0 !important; 
}
.opos-option.feedback-incorrect::after { content: " ❌"; font-weight: bold; margin-left: auto; }

/* Botones adicionales */
.btn-extra {
    font-size: 12px;
    padding: 5px 10px;
    margin-top: 15px;
    background: none;
    border: 1px solid #ccc;
    cursor: pointer;
    border-radius: 4px;
    color: #666;
}
.btn-extra:hover { background: #f0f0f0; color: #333; }

.btn-end-early { color: #dc3545; border-color: #dc3545; }
.btn-end-early:hover { background: #ffeef0; }

/* --- BOTONES --- */
.opos-btn {
    padding: 12px 25px;
    border-radius: 4px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.opos-btn.primary {
    background: var(--opos-primary);
    color: white;
}

.opos-btn.primary:hover {
    background: var(--opos-primary-hover);
}

.opos-btn.secondary {
    background: #f0f0f1;
    color: #2c3338;
    border: 1px solid var(--opos-border);
}

/* --- BARRA DE PROGRESO --- */
.opos-info-bar { margin-bottom: 20px; }
.opos-progress-container {
    height: 8px;
    background: #eee;
    border-radius: 10px;
    margin-top: 10px;
    overflow: hidden;
}
#opos-progress-bar {
    height: 100%;
    background: var(--opos-primary);
    transition: width 0.3s ease;
}

/* --- INTERFAZ DE RESULTADOS (Review) --- */
.opos-review-list { margin-top: 25px; text-align: left; }

.review-item {
    background: #fff;
    border: 1px solid var(--opos-border);
    border-radius: 10px;
    margin-bottom: 12px;
    padding: 15px;
    cursor: pointer;
    border-left: 6px solid #ccc;
    transition: transform 0.2s ease;
}

.review-item:hover { transform: translateX(5px); }
.review-item.correct { border-left-color: var(--opos-success); }
.review-item.incorrect { border-left-color: var(--opos-danger); }

.review-header { display: flex; align-items: flex-start; gap: 12px; }
.status-icon { font-size: 1.2rem; }

.review-details {
    display: none; /* Se activa con la clase .active via JS */
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.review-item.active .review-details { display: block; }

.explanation-box a {
    color: #2271b1;
    text-decoration: underline;
    font-weight: bold;
}

.explanation-box a {
    color: #0073aa;
    text-decoration: underline;
    font-weight: bold;
}
.explanation-box a:hover {
    color: #005177;
}
  
}

/* Ocultar elementos */
.hidden { display: none; }