/* AÑADIDO: Quitar user-select solo de elementos no textuales */
/* (Empty rule removed) */

/* AÑADIDO: Permitir selección en el texto de las preguntas y feedback */
.q-text,
.feedback {
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

body {
    padding: 1.5rem;
}

.test-container {
    max-width: 800px;
    margin: 0 auto;
}

.test-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.test-header h1 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin: 0;
    font-weight: 700;
    transition: color var(--transition-smooth);
}

.test-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    transition: color var(--transition-smooth);
}

/* --- TARJETA DE PREGUNTA MEJORADA --- */
.question-card {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem 2rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-smooth), background-color var(--transition-smooth);
    position: relative;
}

.question-card.flagged {
    border-color: var(--flag-color);
    box-shadow: 0 4px 14px 0px var(--flag-color);
}

.question-header {
    margin-bottom: 1.5rem;
}

.question-header .q-text {
    font-size: 1.1rem;
    line-height: 1.7;
    transition: color var(--transition-smooth);
    font-weight: 500;
}

.q-text *,
.feedback * {
    font-size: inherit !important;
    color: inherit !important;
    background: none !important;
}

.feedback strong {
    color: var(--text-color);
    font-weight: 700;
}

.answers {
    list-style: none;
    margin-bottom: 1.5rem;
    padding-left: 0;
}

/* --- OPCIONES DE RESPUESTA MEJORADAS --- */
.answers li {
    padding: 1rem 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    display: flex;
    align-items: flex-start;
    font-size: 1rem;
}

.answers:not(.corrected) li:hover {
    border-color: var(--accent-color);
    background-color: color-mix(in srgb, var(--accent-color) 10%, transparent);
    transform: translateY(-2px);
}

.answers li.selected {
    border-color: var(--accent-color);
    background-color: color-mix(in srgb, var(--accent-color) 15%, transparent);
}

.answers li.incorrect {
    background-color: color-mix(in srgb, var(--incorrect-color) 15%, transparent);
    border-color: var(--incorrect-color);
    color: var(--incorrect-color);
}

.answers li.correct {
    background-color: color-mix(in srgb, var(--correct-color) 15%, transparent);
    border-color: var(--correct-color);
    color: var(--correct-color);
}

.answers li.correct-unanswered {
    border-color: var(--correct-color);
    color: var(--correct-color);
}

/* Regla corregida para el tema claro, apuntando a html */
html.light-theme .answers li.incorrect,
html.light-theme .answers li.correct,
html.light-theme .answers li.correct-unanswered {
    color: inherit;
}

.answer-letter {
    font-weight: 700;
    color: var(--accent-color);
    margin-right: 1rem;
    transition: color var(--transition-smooth);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

/* --- BOTONES MEJORADOS --- */
.correct-btn,
.feedback-toggle,
.deselect-btn,
#reset-view-btn {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    transition: all var(--transition-fast);
}

.correct-btn:hover,
.feedback-toggle:hover,
.deselect-btn:hover,
#reset-view-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px -2px var(--accent-color);
}

.correct-btn:disabled,
.deselect-btn:disabled,
#reset-view-btn:disabled {
    border-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    background-color: transparent;
    transform: none;
    box-shadow: none;
}

#review-failed-btn,
#correct-all-btn,
#reset-all-btn,
#show-failed-btn {
    border: none;
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition-fast), filter var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 10px -4px var(--shadow-color);
}

#review-failed-btn:hover,
#correct-all-btn:hover,
#reset-all-btn:hover,
#show-failed-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px -5px var(--shadow-color);
}

#correct-all-btn,
#reset-all-btn,
#show-failed-btn {
    background-image: linear-gradient(45deg, var(--accent-color) 0%, var(--accent-color-darker) 100%);
    color: white;
    width: 100%;
    max-width: 300px;
}

.feedback {
    display: none;
    margin-top: 1.5rem;
    padding: 1rem 1.5rem;
    background-color: color-mix(in srgb, var(--bg-color) 50%, transparent);
    border-left: 4px solid var(--accent-color);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    font-size: 1rem;
    line-height: 1.7;
}

.final-actions {
    text-align: center;
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

/* --- ESTILOS MEJORADOS PARA LA CAJA DE RESULTADOS --- */
#results-container {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-top: 2rem;
    text-align: center;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
    box-shadow: 0 5px 25px -5px var(--shadow-color);
}

.results-container p {
    font-size: 1.1rem;
    margin: 0;
}

#results-container h2 {
    margin-top: 0;
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

#score-display {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--correct-color);
    line-height: 1;
    margin: 0.5rem 0 1.5rem 0;
}

.results-details {
    border-top: 1px solid var(--border-color, #4a5568);
    padding-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 2rem;
}

.results-details p {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.results-details p strong {
    font-weight: 600;
    color: var(--text-color-secondary, #94a3b8);
    font-size: 0.9rem;
}

.results-details p span {
    font-weight: 500;
    color: var(--text-color);
}

/* Contenedor para los botones dentro de la caja de resultados */
.results-buttons {
    display: flex;
    flex-direction: row;
    /* Cambiado a 'row' para alineación horizontal */
    justify-content: center;
    /* Centra los botones en el contenedor */
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* --- CONTADOR DE PREGUNTAS MARCADAS --- */
#flag-counter-container {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    background-color: var(--card-color);
    border: 1px solid var(--flag-color);
    border-radius: var(--border-radius-md);
    padding: 10px 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all var(--transition-smooth);
    cursor: pointer;
}

#flag-counter-container.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

#flag-counter-container #flag-count {
    font-weight: 700;
    color: var(--flag-color);
    font-size: 1.2rem;
    transition: color var(--transition-smooth);
}

/* --- ESTILOS NUEVOS Y MODIFICADOS --- */
.header-top-bar {
    display: flex;
    justify-content: center;
    /* Centers the content within the bar */
    align-items: center;
    margin-bottom: 0.75rem;
}

.question-header .q-number {
    margin-right: auto;
    /* Pushes this element to the left */
    font-weight: 700;
    color: var(--accent-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    transition: color var(--transition-smooth);
}

.flag-btn {
    margin-left: auto;
    /* Pushes this element to the right */
    position: static;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-sm);
    color: var(--flag-color);
    background-color: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.flag-btn:hover {
    background-color: color-mix(in srgb, var(--flag-color) 15%, transparent);
    transform: scale(1.1);
}

.official-exam-info {
    display: inline-block;
    /* Ensure it only takes up content width */
    background-color: var(--accent-color);
    color: var(--card-color);
    padding: 0.2rem 0.6rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    animation: pulse-glow 2.5s infinite alternate;
}

@keyframes pulse-glow {
    from {
        box-shadow: 0 0 3px 0px var(--accent-color);
    }

    to {
        box-shadow: 0 0 10px 4px color-mix(in srgb, var(--accent-color) 40%, transparent);
    }
}

@media (max-width: 600px) {
    body {
        padding: 1rem;
    }

    .question-card {
        padding: 1.25rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .correct-btn,
    .feedback-toggle,
    .deselect-btn {
        width: 100%;
        text-align: center;
    }

    /* --- AJUSTES PARA CAJA DE RESULTADOS EN MÓVIL --- */
    #results-container {
        padding: 1.5rem;
        /* Reduce el espaciado interno */
    }

    #results-container h2 {
        font-size: 1.5rem;
        /* Reduce el tamaño del título */
        margin-top: 0;
        margin-bottom: 0.5rem;
        color: var(--text-color-primary, #ECEFF4);
    }

    .results-container p {
        font-size: 1.1rem;
        margin: 0;
    }

    #score-display {
        /* Layout Mobile */
        border-radius: var(--border-radius-lg);
        padding: 1.5rem;
        margin: 1.5rem 0;
        text-align: center;
        box-shadow: 0 5px 25px -5px var(--shadow-color);

        /* Font Size Corrected */
        font-size: 3rem;
        /* Adjusted for mobile */
        font-weight: 700;
        color: var(--accent-color-correct, #5CAE78);
        line-height: 1;

        transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
    }

    .results-details {
        border-top: 1px solid var(--border-color, #4a5568);
        padding-top: 1.5rem;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem 2rem;
    }

    .results-details p {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
    }

    .results-details p strong {
        font-weight: 600;
        color: var(--text-color-secondary, #94a3b8);
        font-size: 0.9rem;
    }

    .results-details p span {
        font-weight: 500;
        color: var(--text-color-primary, #ECEFF4);
    }

    /* Contenedor para los botones dentro de la caja de resultados */
    .results-buttons {
        display: flex;
        flex-direction: row;
        /* Cambiado a 'row' para alineación horizontal */
        justify-content: center;
        /* Centra los botones en el contenedor */
        align-items: center;
        gap: 0.5rem;
        /* Reduced gap slightly */
        margin-top: 2rem;
        width: 100%;
        /* Ensure container takes full width */
    }

    /* Make buttons equal width and reduce padding on mobile */
    .results-buttons button,
    #reset-all-btn,
    #show-failed-btn {
        flex: 1;
        /* Force equal width */
        padding: 0.75rem 0.5rem;
        /* Reduced padding (Option 1) */
        width: auto;
        /* Allow flex to control width */
        max-width: none;
        /* Remove max-width restriction if any */
        font-size: 1rem;
        /* Slightly reduced font size (Option 2) */
        white-space: nowrap;
        /* Prevent wrapping */
    }

    /* --- CONTADOR DE PREGUNTAS MARCADAS --- */
    #flag-counter-container {
        position: fixed;
        bottom: 20px;
        left: 20px;
        z-index: 1000;
        background-color: var(--card-color);
        border: 1px solid var(--flag-color);
        border-radius: var(--border-radius-md);
        padding: 10px 15px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        display: flex;
        align-items: center;
        gap: 10px;
        transition: all var(--transition-smooth);
        cursor: pointer;
    }

    #flag-counter-container.hidden {
        opacity: 0;
        visibility: hidden;
        transform: translateY(20px);
    }

    #flag-counter-container #flag-count {
        font-weight: 700;
        color: var(--flag-color);
        font-size: 1.2rem;
        transition: color var(--transition-smooth);
    }

}

/* --- Hint Tooltip Styles --- */
.hint-container {
    position: relative;
    margin-left: auto;
    display: none;
    /* Hide by default */
    align-items: center;
}

/* Show when test is fully corrected */
.test-corrected .hint-container {
    display: flex;
}

.hint-icon {
    cursor: help;
    color: var(--accent-color);
    font-size: 24px;
    vertical-align: middle;
    transition: color var(--transition-fast);
}

.hint-icon:hover {
    color: var(--accent-color-darker);
}

.hint-tooltip {
    display: none;
    position: absolute;
    bottom: 125%;
    right: 50%;
    transform: translateX(50%);
    background-color: var(--card-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    box-shadow: 0 4px 12px var(--shadow-color);
    width: 300px;
    z-index: 10;
    font-size: 0.9rem;
    line-height: 1.6;
    text-align: left;
}

.hint-container:hover .hint-tooltip {
    display: block;
}

.hint-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: var(--card-color) transparent transparent transparent;
}

/* --- MODAL DE CONFIRMACIÓN --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease-out;
}

.modal-overlay .modal-content {
    background-color: var(--card-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 90%;
    text-align: center;
    border: 1px solid var(--border-color);
    animation: slideUp 0.3s ease-out;
}

.modal-content h3 {
    margin-top: 0;
    color: var(--text-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.modal-btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.modal-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.modal-btn.primary {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

.modal-btn.secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}



/* Fix for wide line spacing in feedback */
.feedback p {
    margin-bottom: 0;
}

/* --- FIX: Hint Tooltip Mobile Overflow --- */
@media (max-width: 600px) {
    .hint-tooltip {
        position: fixed;
        top: 50%;
        left: 50%;
        bottom: auto;
        right: auto;
        transform: translate(-50%, -50%);
        width: 90vw;
        max-width: 350px;
        z-index: 2000;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    }

    .hint-tooltip::after {
        display: none;
    }
}

/* --- WATERMARK STYLES --- */
.watermark-container {
    position: fixed;
    /* Position relative to the center of the page to stay next to the content */
    left: calc(50% + 460px);
    top: 50%;
    transform: translateY(-50%);
    bottom: auto;
    right: auto;

    z-index: 0;
    pointer-events: none;
    user-select: none;
    opacity: 0.2;
    /* Slightly more visible since it's smaller */
    writing-mode: vertical-rl;
    text-orientation: mixed;
    white-space: normal;
    /* Allow wrapping */

    /* Ensure it doesn't overflow vertically if screen is tighter, forcing wrap */
    max-height: 80vh;
    text-align: center;
    line-height: 1.2;
}

.watermark-text {
    font-size: 1.3rem;
    /* Preserving user setting */
    font-weight: 800;
    color: var(--text-color);
    text-transform: uppercase;
    font-family: 'Inter', sans-serif;
    letter-spacing: 3px;
    display: block;
    /* Force new line (column in vertical mode) */
    margin: 0.5rem 0;
    /* Space between lines */
}

.watermark-text.chapter-title {
    color: var(--accent-color);
}

/* Hide on smaller screens to prevent obstruction */
@media (max-width: 1200px) {
    .watermark-container {
        display: none;
    }
}
/* --- NAVEGACIÓN ENTRE TESTS (Professional Design) --- */
.test-navigation-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-test-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-color);
    text-decoration: none;
    transition: all var(--transition-fast);
    max-width: 48%;
    flex: 1;
}

.nav-test-btn:hover {
    border-color: var(--accent-color);
    background-color: color-mix(in srgb, var(--accent-color) 5%, transparent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px -4px var(--shadow-color);
}

.nav-test-btn.next-btn {
    margin-left: auto;
    text-align: right;
    justify-content: flex-end;
}

.nav-btn-content {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.nav-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.nav-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-test-btn .material-icons {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.nav-test-btn:hover .material-icons {
    color: var(--accent-color);
}

.nav-spacer {
    flex: 1;
}

@media (max-width: 600px) {
    .test-navigation-footer {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-test-btn {
        max-width: 100%;
        width: 100%;
    }
}


/* --- MOBILE OPTIMIZATION FOR NAV BUTTONS (SIDE-BY-SIDE) --- */
@media (max-width: 600px) {
    .test-navigation-footer {
        flex-direction: row !important;
        gap: 0.5rem !important;
    }
    .nav-test-btn {
        max-width: 50% !important;
        width: 50% !important;
        padding: 0.5rem !important;
    }
    .nav-title {
        max-width: 100px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: 0.8rem !important;
    }
    .nav-label {
        font-size: 0.6rem !important;
    }
}