/* Estilos unificados para modos de estudio (teoría, aprendizaje, práctica) */
/* Override de variable global para páginas de estudio */
:root
{
    --color-bg-overlay: rgba(255, 250, 245, 0.7);
}

/* Study header center */
.study-header-center
{
    flex: 1 1 auto;
    min-width: 0;
    text-align: left;
    margin: 0 var(--spacing);
    display: flex;
    flex-direction: column;
    gap: var(--gap-xs);
}

/* Study title */
.study-title
{
    font-weight: 500;
    color: var(--color-text-dark);
    text-align: left;
    display: block;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Study progress container */
.study-progress-container
{
    margin-top: 0;
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    min-width: 0;
}

/* Study progress bar container */
.study-progress-bar-container
{
    height: 6px;
    background-color: var(--color-bg-light);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 3px;
    width: clamp(8rem, 40vw, 12rem);
    flex: 1 1 auto;
}

/* Study progress bar fill */
.study-progress-bar-fill
{
    height: 100%;
    width: 0%;
    background-color: var(--color-primary);
    transition: width var(--transition);
}

/* Study progress text */
.study-progress-text
{
    color: var(--color-text-dark);
    display: inline-block;
    flex-shrink: 0;
}

/* Study header right */
.study-header-right
{
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

/* Course button text */
.course-button-text
{
    display: inline;
}

/* Course button icon */
.course-button-icon
{
    display: none;
}

/* Study timer */
.study-timer
{
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: var(--padding-timer);
    min-height: var(--size-button);
    background-color: var(--color-bg-main);
    border: var(--border-width) solid var(--color-primary);
    border-radius: var(--border-radius-timer);
}

/* Timer icon */
.timer-icon
{
    color: var(--color-secondary);
}

/* Timer text */
.timer-text
{
    color: var(--color-primary);
    font-weight: bold;
}

/* Study content container */
.study-content-container
{
    display: flex;
    flex-direction: row-reverse;
    height: var(--height-content-container);
    overflow: hidden;
    margin-top: 0;
    max-height: var(--height-content-container);
}

/* Study main section */
.study-main-section
{
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing);
    background-color: var(--color-bg-card);
}

/* Study content box */
.study-content-box
{
    color: var(--color-text-dark);
    letter-spacing: 0.03em;
    word-spacing: 0.05em;
    margin: 0 auto var(--margin-option-bottom);
    padding: var(--spacing);
    text-rendering: optimizeLegibility;
    width: 100%;
    overflow-wrap: break-word;
}

/* Study content inner */
.study-content-inner
{
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    max-width: 100%;
}

/* Question container */
.question-container
{
    text-align: left;
    padding-top: var(--spacing);
    padding-bottom: var(--spacing-lg);
    width: 100%;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 0;
    font-weight: 500;
    font-size: var(--font-size-lg);
    color: var(--color-text-dark);
}

/* Exercise options */
.exercise-options
{
    display: flex;
    flex-direction: column;
    gap: var(--gap-xs);
    width: 100%;
    margin-bottom: var(--spacing-md);
}

/* Study option */
.study-option
{
    display: flex;
    align-items: center;
    width: 100%;
    padding: var(--padding-option);
    margin-bottom: var(--margin-option-bottom);
    background-color: var(--color-bg-option);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--border-radius);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow);
    font-size: var(--font-size-md);
}

/* Study option */
.study-option:hover
{
    background-color: var(--color-gray);
    border-color: var(--color-border);
}

/* Study option */
.study-option:focus-visible
{
    outline: var(--outline-size) solid var(--color-primary);
    outline-offset: var(--border-width-focus-offset);
}

/* Selected */
.study-option.selected
{
    background-color: var(--color-info-alpha);
    border-color: var(--color-info);
}

/* Correct */
.study-option.correct
{
    background-color: var(--color-success-alpha);
    border-color: var(--color-success);
    color: var(--color-success);
}

/* Incorrect */
.study-option.incorrect
{
    background-color: var(--color-error-alpha-1);
    border-color: var(--color-error);
    color: var(--color-error);
}

/* Disabled */
.study-option.disabled
{
    cursor: not-allowed;
    opacity: 0.6;
}

/* Study option */
.study-option[data-disabled="true"]
{
    pointer-events: none;
}

/* Study option letter */
.study-option-letter
{
    width: 2rem;
    height: 2rem;
    background-color: var(--color-border);
    color: var(--color-text-dark);
    margin-right: var(--spacing);
    font-weight: 500;
    font-size: var(--font-size-md);
    transition: all var(--transition);
}

/* Study option letter */
.study-option.selected .study-option-letter,
.study-option.correct .study-option-letter,
.study-option.incorrect .study-option-letter
{
    color: var(--color-white);
}

/* Study option letter */
.study-option.selected .study-option-letter
{
    background-color: var(--color-info);
}

/* Study option letter */
.study-option.correct .study-option-letter
{
    background-color: var(--color-success);
}

/* Study option letter */
.study-option.incorrect .study-option-letter
{
    background-color: var(--color-danger);
}

/* Study option text */
.study-option-text
{
    flex: 1;
    color: var(--color-text-dark);
    font-size: var(--font-size-md);
}

/* Study explanation container */
.study-explanation-container
{
    margin: 0 0 var(--margin-explanation) 0;
    padding: var(--padding-explanation);
    border-radius: var(--border-radius);
    background-color: var(--color-bg-card);
    display: none;
    width: 100%;
    border: var(--border-width) solid var(--color-border);
    border-left: 4px solid var(--color-info);
}

/* Study explanation container */
.study-explanation-container h4
{
    font-size: var(--font-size-lg);
    color: var(--color-info);
    margin-bottom: var(--spacing-md);
}

/* Study explanation text */
.study-explanation-text
{
    color: var(--color-blue-dark);
    margin: 0;
}

/* Button row */
.button-row
{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--gap-lg);
    width: 100%;
}

/* Btn */
.button-row .btn
{
    font-size: var(--font-size-md);
    min-width: 0;
    white-space: normal;
}

/* Button */
.button:disabled
{
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Study sidebar */
.study-sidebar
{
    width: var(--study-sidebar-width);
    background-color: var(--color-bg-card);
    border-left: solid var(--color-primary);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Study sidebar content */
.study-sidebar-content
{
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing);
}

/* Study exercise list */
.study-exercise-list
{
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
}

/* Study exercise item */
.study-exercise-item
{
    padding: var(--padding-option);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: all var(--transition);
    background-color: var(--color-bg-card);
    box-shadow: var(--shadow);
}

/* Study exercise item */
.study-exercise-item:focus-visible
{
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Study exercise item */
.study-exercise-item:hover
{
    background-color: var(--color-bg-hover);
}

/* Active */
.study-exercise-item.active
{
    background-color: var(--color-secondary-alpha-1);
    border-left: var(--border-width-lg) solid var(--color-secondary);
    box-shadow: var(--shadow-hover);
}

/* Answered */
.study-exercise-item.answered
{
    background-color: var(--color-info-alpha-15);
    border-left: var(--border-width) solid var(--color-info);
    font-weight: 500;
}

/* Completed */
.study-exercise-item.completed
{
    background-color: var(--color-info-alpha-15);
    border-color: var(--color-info);
}

/* Study exercise icon */
.study-exercise-icon
{
    width: var(--spacing-exercise-icon-size);
    height: var(--spacing-exercise-icon-size);
    background-color: var(--color-secondary);
    color: var(--color-white);
    margin-right: var(--spacing);
    box-shadow: var(--shadow-hover);
    transition: all var(--transition);
}

/* Study exercise icon */
.study-exercise-item.active .study-exercise-icon
{
    background-color: var(--color-primary);
    box-shadow: var(--shadow-hover);
}

/* Study exercise icon */
.study-exercise-item.answered .study-exercise-icon,
.study-exercise-item.completed .study-exercise-icon
{
    background-color: var(--color-info);
    color: var(--color-white);
}

/* Study exercise icon */
.study-exercise-item.answered .study-exercise-icon
{
    box-shadow: var(--shadow-hover);
}

/* Study exercise number */
.study-exercise-number
{
    font-weight: 500;
    color: var(--color-text-dark);
}

/* Study exercise number */
.study-exercise-item.active .study-exercise-number
{
    font-weight: 600;
    color: var(--color-primary);
}

/* Study exercise number */
.study-exercise-item.answered .study-exercise-number
{
    color: var(--color-info);
}

/* Study results screen */
.study-results-screen
{
    max-width: var(--size-results-max);
    margin: 40px auto;
    padding: 30px;
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow-y: auto;
    overflow-x: hidden;
}

/* Study results header */
.study-results-header
{
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 2px solid var(--color-primary-alpha-30);
    padding-bottom: 15px;
}

/* Títulos de resultados — propiedades compartidas */
.study-results-title,
.study-results-topic-name
{
    font-size: var(--font-size-2xl);
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* Study results title */
.study-results-title
{
    margin-bottom: var(--margin-option-bottom);
    color: var(--color-primary);
    font-weight: 600;
}

/* Study results topic name */
.study-results-topic-name
{
    color: var(--color-error);
    font-weight: 500;
}

/* Study stats grid */
.study-stats-grid
{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
}

/* Study stats card (compone .card de common.css) */
.study-stats-card
{
    background-color: var(--color-bg-overlay);
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 3px 10px var(--color-primary-alpha);
    border-top: 3px solid var(--color-error);
    width: 100%;
}

/* Contenedor de acciones al final de resultados (volver + ver detalle) */
.study-results-actions
{
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

/* Study stat item */
.study-stat-item
{
    text-align: center;
    padding: 15px;
    background-color: var(--color-bg-overlay);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-primary-alpha-30);
    transition: all 0.3s ease;
    min-width: 0;
}

/* Study stat item */
.study-stat-item:hover
{
    transform: translateY(var(--transform-hover-md));
    box-shadow: 0 5px 15px var(--color-primary-alpha-30);
}

/* Study stat icon */
.study-stat-icon
{
    font-size: var(--font-size-2xl);
    margin-bottom: 10px;
}

/* Stat value/label — overflow compartido */
.study-stat-value,
.study-stat-label
{
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Study stat value */
.study-stat-value
{
    font-size: var(--font-size-2xl);
    font-weight: bold;
    margin-bottom: 5px;
}

/* Study stat label */
.study-stat-label
{
    color: var(--color-error);
    font-weight: 500;
}

/* Study color green */
.study-color-green
{
    color: var(--color-success);
}

/* Study color orange */
.study-color-orange
{
    color: var(--color-stat-orange);
}

/* Study color red */
.study-color-red
{
    color: var(--color-primary);
}

/* Study color blue */
.study-color-blue
{
    color: var(--color-info);
}

/* Study color purple */
.study-color-purple
{
    color: var(--color-stat-purple);
}

/* Study color grey */
.study-color-grey
{
    color: var(--color-stat-grey);
}

/* Sidebar content */
.sidebar-content
{
    padding: 15px;
}

/* Topics list */
.topics-list
{
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Contenedor de la sección de contenido teórico */
.theory-content-section
{
    width: 100%;
    margin: 0 0 20px 0;
}

/* Caja de texto con el contenido teórico de la sección */
.theory-text-container
{
    width: 100%;
    padding: 28px 32px;
    background: linear-gradient(135deg, var(--color-bg-peach-light) 0%, var(--color-bg-peach) 100%);
    border-radius: 12px;
    border: 2px solid var(--color-secondary);
    box-shadow: 0 4px 12px rgba(219, 144, 105, 0.15); /* sombra cálida del secundario */
    font-size: var(--font-size-md);
    line-height: 1.75;
    color: var(--color-text-dark);
    word-break: break-word;
}

/* Estilos de markdown dentro del contenedor teórico */
/* Imagen ilustrativa insertada por IA: ocupa 1/3 del contenedor y queda centrada */
.theory-illustration
{
    text-align: center;
    margin: 20px 0;
}

/* Theory illustration */
.theory-illustration img
{
    width: clamp(200px, 60%, 380px);
    height: auto;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    display: inline-block;
}

/* Theory illustration caption */
.theory-illustration-caption
{
    display: block;
    margin: 6px auto 0 !important;
    font-size: 0.82rem;
    color: var(--color-text-muted, #888);
    font-style: italic;
    text-align: center !important;
    max-width: clamp(200px, 60%, 380px);
    line-height: 1.4;
}

/* Fallback para imágenes en markdown antiguo (![alt](url)) */
.theory-text-container > img,
.theory-text-container p > img
{
    width: clamp(200px, 60%, 380px);
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

/* Theory text container */
.theory-text-container h1,
.theory-text-container h2,
.theory-text-container h3,
.theory-text-container h4,
.theory-text-container h5,
.theory-text-container h6
{
    font-weight: 700;
    color: var(--color-primary-dark, var(--color-primary));
    margin: 1.2em 0 0.4em;
    line-height: 1.3;
}

/* Theory text container */
.theory-text-container h1
{
    font-size: 1.5rem;
}

/* Theory text container */
.theory-text-container h2
{
    font-size: 1.3rem;
}

/* Theory text container */
.theory-text-container h3
{
    font-size: 1.15rem;
}

/* Theory text container */
.theory-text-container h4
{
    font-size: 1rem;
}

/* Theory text container */
.theory-text-container h5
{
    font-size: 0.95rem;
}

/* Theory text container */
.theory-text-container h6
{
    font-size: 0.9rem;
}

/* Theory text container */
.theory-text-container p
{
    margin: 0 0 1em;
}

/* Caption dentro de ilustraciones: siempre centrada aunque .theory-text-container p
   tenga igual especificidad — esta regla aparece después en cascada y gana */
.theory-illustration p
{
    text-align: center;
    margin: 6px auto 0;
}

/* Theory text container */
.theory-text-container strong
{
    font-weight: 700;
    color: var(--color-text-dark);
}

/* Theory text container */
.theory-text-container em
{
    font-style: italic;
}

/* Theory text container */
.theory-text-container ul,
.theory-text-container ol
{
    margin: 0 0 1em 1.5em;
    padding: 0;
}

/* Theory text container */
.theory-text-container li
{
    margin-bottom: 0.35em;
}

/* Theory text container */
.theory-text-container > *:first-child
{
    margin-top: 0;
}

/* Theory text container */
.theory-text-container > *:last-child
{
    margin-bottom: 0;
}

/* Theory text container */
.theory-text-container table
{
    border-collapse: collapse;
    margin: 1em 0;
    font-size: var(--font-size-md);
    display: block;
    overflow-x: auto;
    width: max-content;
    max-width: 100%;
}

/* Theory text container */
.theory-text-container thead tr
{
    background: var(--color-primary);
    color: var(--color-white);
}

/* Theory text container */
.theory-text-container th
{
    padding: 8px 14px;
    font-weight: 600;
    text-align: left;
    white-space: nowrap;
    word-break: normal;
}

/* Theory text container */
.theory-text-container td
{
    padding: 7px 14px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-dark);
    white-space: nowrap;
    word-break: normal;
}

/* Theory text container */
.theory-text-container tbody tr:nth-child(even)
{
    background: var(--color-primary-alpha, rgba(193,75,54,0.07));
}

/* Theory text container */
.theory-text-container tbody tr:hover
{
    background: var(--color-primary-alpha, rgba(193,75,54,0.12));
}

/* Responsive: landscape */
@media screen and (min-width: 48rem) and (max-width: 64rem) and (orientation: landscape)
{
    /* study-content-container height/max-height removed: identical to base */
    .study-sidebar
    {
        width: 16rem;
        min-width: 16rem;
    }

    /* Study main section */
    .study-main-section
    {
        padding: var(--spacing-lg);
    }

    /* Study content box */
    .study-content-box
    {
        padding: var(--spacing-lg);
    }

    /* Study option */
    .study-option
    {
        padding: var(--spacing-md) var(--spacing);
    }

    /* Study stats grid */
    .study-stats-grid
    {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--spacing-lg);
    }

}

/* Responsive: tablet y móvil vertical */
@media screen and (max-width: 48rem) and (orientation: portrait)
{
    /* Header left */
    .app-header .header-left
    {
        display: none;
    }

    /* Course page button */
    .course-page-button
    {
        border-radius: 50%;
        padding: 0;
    }

    /* Course button text */
    .course-button-text
    {
        display: none;
    }

    /* Course button icon */
    .course-button-icon
    {
        margin: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* Study progress container */
    .study-progress-container
    {
        width: 100%;
        justify-content: center;
    }

    /* Study progress bar container */
    .study-progress-bar-container
    {
        width: 100%;
        margin: 0;
    }

    /* Study stats grid */
    .study-stats-grid
    {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

}

/* Responsive: tablet vertical */
@media screen and (min-width: 30rem) and (max-width: 48rem) and (orientation: portrait)
{
    /* Study header center */
    .study-header-center
    {
        margin: 0 var(--spacing-md);
    }

    /* Study title */
    .study-title
    {
        max-width: 50ch;
        margin: 0;
        align-self: flex-start;
    }

    /* App header */
    .app-header
    {
        gap: var(--gap-md);
    }

    /* Study content container */
    .study-content-container
    {
        align-items: stretch;
        gap: var(--spacing-md);
    }

    /* Course page button */
    .course-page-button
    {
        width: 2.75rem;
        height: 2.75rem;
        min-width: 2.75rem;
        gap: 0;
    }

    /* Study sidebar */
    .study-sidebar
    {
        order: 0;
        width: 15.5rem;
        min-width: 15.5rem;
        border-left: var(--border-width) solid var(--color-primary);
        border-top: none;
        max-height: 100%;
        overflow-y: auto;
    }

    /* Study sidebar content */
    .study-sidebar-content
    {
        min-width: 0;
        padding: var(--spacing-md);
    }

    /* Study exercise list */
    .study-exercise-list
    {
        gap: var(--gap-sm);
        overflow-x: visible;
    }

    /* Study exercise item */
    .study-exercise-item
    {
        min-width: 100%;
    }

    /* Study stats grid */
    .study-stats-grid
    {
        gap: var(--spacing-md);
    }

}

/* Responsive: móvil vertical */
@media screen and (max-width: 30rem) and (orientation: portrait)
{
    /* App header */
    .app-header
    {
        gap: var(--gap-sm);
    }

    /* Course page button */
    .course-page-button
    {
        width: 2.5rem;
        height: 2.5rem;
        min-width: 2.5rem;
    }

    /* Study content container */
    .study-content-container
    {
        flex-direction: column;
        height: auto;
        max-height: none;
    }

    /* Study sidebar */
    .study-sidebar
    {
        display: none;
    }

}