/* Exercise and Solution Page Specific Styles */

/* Page headers for exercise/solution pages */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 3rem;
    padding: 2rem 0;
    padding-left: 0;
    border-bottom: 2px solid var(--color-border-light);
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--color-black);
    margin: 0;
    padding-left: 0;
    text-align: left;
}

.timestamp {
    font-size: 0.9rem;
    color: var(--color-grey);
    font-style: italic;
    margin: 0;
    white-space: nowrap;
}

.version-info {
    font-size: 1.1rem;
    color: var(--color-grey);
    font-style: italic;
}

/* Page instructions - minimal styling, inherits from body */
.page-instructions {
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border-light);

}

/* Exercise and solution containers */
.exercises-container,
.solutions-container {
    display: block;
}

.exercise-section,
.solution-section {
    max-width: 100%;
    overflow-x: auto;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.exercise-section h2,
.solution-section h2 {
    color: var(--color-black);
    margin-bottom: 2rem;
    margin-left: 0;
    padding-left: 0;
    font-size: 1.8rem;
    border-bottom: 2px solid var(--color-border-light);
    padding-bottom: 0.5rem;
}

.exercise,
.solution {
    margin-bottom: 0;
    padding: 1.5rem;
    padding-left: 0;
    border: none;
    border-bottom: 1px solid var(--color-border-light);
    background: transparent;
    position: relative;
    overflow: visible;
}

.exercises-container > .exercise-section:last-child .exercise:last-child,
.solutions-container > .solution-section:last-child .solution:last-child {
    border-bottom: none;
}

.exercise-number,
.solution-number {
    font-weight: bold;
    color: var(--color-light-blue);
    margin-bottom: 1rem;
    margin-left: 0;
    padding-left: 0;
    font-size: 1.1rem;
}

.exercise-content {
    margin-bottom: 0.5rem;
    padding-top: 0;
    line-height: 1.2;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    overflow: visible;
}

.exercise-content br {
    line-height: 0.5;
    content: "";
    display: block;
    margin: 0.25rem 0;
}

.solution-content {
    margin-bottom: 0.5rem;
    padding-top: 0;
    line-height: 1.2;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    overflow: visible !important;
    overflow-x: visible !important;
    overflow-y: visible !important;
    max-height: none !important;
    height: auto !important;
}

/* Ensure no scrollbars in any child elements of solution-content */
.solution-content *,
.solution-content .MathJax,
.solution-content mjx-container,
.solution-content .MathJax_Display {
    overflow: visible !important;
    overflow-x: visible !important;
    overflow-y: visible !important;
    max-height: none !important;
}

.difficulty {
    font-size: 0.9rem;
    color: var(--color-grey);
    font-style: italic;
}

/* Buttons and actions */
.page-actions {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--color-border-light);
}

.btn-solution {
    background-color: var(--color-green);
    color: white;
    padding: 0.5rem 1.5rem;
    margin-top: 0.5rem;
    font-size: 1.2rem;
    position: absolute;
    bottom: 1rem;
    right: 1rem;
}

.btn-solution:hover {
    background-color: var(--color-dark-green);
    transform: translateY(-1px);
}

.btn-solution.active {
    background-color: var(--color-red);
}

.btn-solution.active:hover {
    background-color: var(--color-dark-red);
}

/* Marking buttons */
.marking-buttons {
    position: absolute;
    bottom: 1rem;
    right: 7rem;
    display: flex;
    gap: 0.5rem;
}

.btn-mark-correct,
.btn-mark-incorrect {
    padding: 0.5rem 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    min-width: 3rem;
    cursor: pointer;
}

.btn-mark-correct {
    background-color: rgba(39, 174, 96, 0.15);
    border: 2px solid var(--color-green);
    color: var(--color-green);
}

.btn-mark-correct:hover {
    background-color: rgba(39, 174, 96, 0.25);
    transform: translateY(-1px);
}

.btn-mark-incorrect {
    background-color: rgba(231, 76, 60, 0.15);
    border: 2px solid var(--color-red);
    color: var(--color-red);
}

.btn-mark-incorrect:hover {
    background-color: rgba(231, 76, 60, 0.25);
    transform: translateY(-1px);
}

/* Visual feedback for marked exercises */
.exercise.marked-correct {
    border-left: 5px solid var(--color-green);
}

.exercise.marked-incorrect {
    border-left: 5px solid var(--color-red);
}

/* Exercise mark indicator */
.exercise-mark {
    font-size: 1.2rem;
    margin-left: 0.5rem;
    font-weight: bold;
}

.exercise.marked-correct .exercise-mark {
    color: var(--color-green);
}

.exercise.marked-incorrect .exercise-mark {
    color: var(--color-red);
}

/* Score display */
.score-display {
    position: fixed;
    top: 1rem;
    right: 1rem;
    font-family: 'Brush Script MT', cursive, 'Comic Sans MS', cursive;
    font-size: 4rem;
    color: var(--color-light-blue);
    background-color: rgba(255, 255, 255, 0.9);
    padding: 1rem 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    font-weight: bold;
}

.btn-toggle-show {
    background-color: var(--color-green);
    color: white;
    font-size: 1.5rem;
    padding: 0.75rem 2rem;
}

.btn-toggle-show:hover {
    background-color: var(--color-dark-green);
    transform: translateY(-1px);
}

.btn-toggle-hide {
    background-color: var(--color-red);
    color: white;
    font-size: 1.5rem;
    padding: 0.75rem 2rem;
}

.btn-toggle-hide:hover {
    background-color: var(--color-dark-red);
    transform: translateY(-1px);
}

.btn-reset {
    background-color: var(--color-light-grey);
    color: white;
    font-size: 1.5rem;
    padding: 0.75rem 2rem;
}

.btn-reset:hover {
    background-color: var(--color-grey);
    transform: translateY(-1px);
}

/* Responsive design for exercise pages */
@media (max-width: 480px) {
    .exercise-section,
    .solution-section {
        padding: 0;
        margin: 0;
    }

    .exercise,
    .solution {
        padding: 1rem;
    }

    .page-header h1 {
        font-size: 1.8rem;
    }
}

/* Print styles for exercise pages */
@media print {
    /* Hide page header */
    .page-header {
        display: none !important;
    }

    /* Remove boxes and borders from sections */
    .exercise-section,
    .solution-section {
        background: transparent !important;
        border-radius: 0 !important;
        padding: 0 !important;
        box-shadow: none !important;
    }

    /* Remove boxes and borders from individual exercises */
    .exercise,
    .solution {
        border: none !important;
        border-radius: 0 !important;
        background: transparent !important;
        padding: 0.5rem 0 !important;
        margin-bottom: 1.5rem !important;
        page-break-inside: avoid;
        text-align: left !important;
    }

    /* Align exercise content to the left */
    .exercise-content {
        text-align: left !important;
    }

    /* Hide page actions (buttons) */
    .page-actions,
    .page-actions-bottom {
        display: none !important;
    }

    /* Hide solution toggle buttons */
    .btn-solution {
        display: none !important;
    }

    /* Hide marking buttons */
    .marking-buttons {
        display: none !important;
    }

    /* Hide score display */
    .score-display {
        display: none !important;
    }

    /* Hide inline solutions by default when printing */
    .solution-content {
        display: none !important;
    }

    /* Ensure proper page breaks */
    .exercise-section,
    .solution-section {
        page-break-after: auto;
    }

    .exercise-section h2,
    .solution-section h2 {
        page-break-after: avoid;
    }
}