/*
MODULE VIEW STYLES
==================
Styles for the single module overview page.

Includes:
- Module information header and layout
- Module metadata and progress display
- Module lesson cards and interactions
- Module action buttons
- Responsive design for module view
*/

/* Module View Layout */
.module-view {
    max-width: 960px; /* Slightly wider for more content space */
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md); /* More vertical padding */
    overflow-x: hidden;
    background-color: var(--content-bg); /* Ensure consistent background */
}

.module-view .module-view-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative; /* For potential decorative elements */
}

.module-view .module-status {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.module-view .module-status.completed {
    color: var(--success-color);
    background-color: rgba(0, 205, 0, 0.05);
    box-shadow: 0 0px 8px 1px rgba(0, 205, 0, 0.1);
    border-radius: 6px;
    padding: 0.1rem 0.4rem;
    font-weight: 400;
}

.module-view .module-status.in-progress {
    color: rgb(255, 152, 0);
    background-color: rgba(255, 152, 0, 0.05);
    box-shadow: 0 0px 8px 1px rgba(255, 152, 0, 0.1);
    border-radius: 6px;
    padding: 0.1rem 0.4rem;
    font-weight: 400;
}

.module-view .module-status.not-started {
    color: var(--text-muted-color);
    font-weight: 500;
}

.module-view .module-view-title {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 2rem;
    font-size: var(--text-xxl);
    letter-spacing: var(--ls-base);
}

/* Module prefix styling within title */
.module-view .module-prefix {
    color: var(--text-muted-color);
}

.module-view .module-view-description {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--sidebar-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.module-view .module-view-description h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    padding-bottom: var(--spacing-xs);
}

.module-view .module-description-content {
    line-height: 1.7;
    color: var(--text-secondary);
    font-size: 1rem;
}

.module-view .module-view-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.module-view .module-view-actions .bttn {
    min-height: 47px;
    min-width: 47px;
    padding: .8rem 1rem;
    font-size: var(--text-base);
}

.module-view .module-view-actions .restart-module-btn:hover {
    color: rgb(255, 38, 38);
    background-color: rgba(255, 38, 38, 0.1);
    border-color: rgba(255, 38, 38, 0.20);
}

.module-view .module-action-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.module-view .module-view-lessons {
    margin-top: 5rem;
}

.module-view .lessons-section-title {
    display: block;
    font-size: var(--text-lg);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    color: var(--text-tertiary-color);
    letter-spacing: var(--ls-base);
    text-align: left;
}

.module-view .lessons-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Module Lesson Cards With Animated Gradient Background Grow Effect*/
.module-view .module-view-lesson {
    position: relative;
    border-radius: 12px;
    padding: var(--spacing-md);
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
        "number content actions";
    gap: var(--spacing-sm) var(--spacing-md);
    align-items: center;
    box-shadow: 0 0px 0px 1px var(--shadow-border);
    overflow: hidden; /* Important for containing the pseudo-element */
    z-index: 0; /* Establish stacking context */
}

.module-view .module-view-lesson::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    transition: opacity .8s ease;
    opacity: 0;
    pointer-events: none;
}

/* Completed state */
.module-view .module-view-lesson.completed {
    background: linear-gradient(120deg, rgba(0, 175, 0, 0.1) 10%, transparent 75%);
    border-left: 2px solid var(--success-color);
}

.module-view .module-view-lesson.completed::before {
    background: linear-gradient(120deg, rgba(0, 175, 0, 0.1) 25%, transparent 100%);
}

.module-view .module-view-lesson.completed:hover::before {
    opacity: 1;
}

/* Started state */
.module-view .module-view-lesson.started {
    background: linear-gradient(120deg, rgba(251, 191, 36, 0.1) 10%, transparent 75%);
    border-left: 2px solid #fbbf24;
}

.module-view .module-view-lesson.started::before {
    background: linear-gradient(120deg, rgba(251, 191, 36, 0.1) 25%, transparent 100%);
}

.module-view .module-view-lesson.started:hover::before {
    opacity: 1;
}

/* Not started state */
.module-view .module-view-lesson.not-started {
    background: linear-gradient(120deg, rgba(0, 114, 255, 0.1) 10%, transparent 75%);
    border-left: 2px solid rgb(0, 114, 255);
}

.module-view .module-view-lesson.not-started::before {
    background: linear-gradient(120deg, rgba(0, 114, 255, 0.1) 25%, transparent 100%);
}

.module-view .module-view-lesson.not-started:hover::before {
    opacity: 1;
}


.module-view .lesson-number {
    grid-area: number;
    width: 38px;
    height: 38px;
    background: var(--primary-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: var(--text-lg);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    align-self: center;
}

.module-view .module-view-lesson.completed .lesson-number {
    background: var(--success-color);
}

.module-view .module-view-lesson.started .lesson-number {
    background: #fbbf24;
}

.module-view .lesson-content {
    grid-area: content;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.module-view .lesson-title {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.8;
}

.module-view .lesson-description {
    line-height: 1.6;
    color: var(--text-tertiary-color);
    font-size: var(--text-base);
    margin-bottom: 0;
}

.module-view .lesson-description .expand-btn {
    display: inline-flex;
    padding: .25rem .6rem;
    border-radius: 10px;
}

.module-view .lesson-description .expand-btn:hover {
    background-color: var(--hover-50);
}

.module-view .lesson-description .expand-btn.expanded svg {
    transform: rotate(180deg);
}

.module-view .lesson-description .description-text {
    text-decoration: none;
}

.module-view .lesson-status {
    display: flex;
    align-items: center;
    letter-spacing: var(--ls-lg);
    gap: var(--spacing-xs);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 400;
    margin-bottom: 1rem;
}

.module-view .lesson-status .status-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    border-radius: 6px;
    padding: 0.2rem 0.4rem;
    font-weight: 400;
}

.module-view .lesson-status .status-badge svg {
    width: .8rem;
    height: .8rem;
}

.module-view .lesson-status .status-badge.completed {
    color: var(--success-color);
    background-color: rgba(0, 205, 0, 0.05);
    box-shadow: 0 0px 1px 1px rgba(0, 205, 0, 0.1);
}

.module-view .lesson-status .status-badge.in-progress {
    color: rgb(255, 152, 0);
    background-color: rgba(255, 152, 0, 0.05);
    box-shadow: 0 0px 1px 1px rgba(255, 152, 0, 0.1);

}

.module-view .lesson-status .status-badge.not-started {
    color: rgb(0, 114, 255);
    background-color: rgb(0, 114, 255, .05);
    box-shadow: 0 0px 1px 1px rgb(0, 114, 255, .1);
}

.module-view .lesson-actions {
    grid-area: actions;
    flex-shrink: 0;
    justify-self: end;
    align-self: center;
    display: flex;
    gap: var(--spacing-xs);
}

.module-view .lesson-actions .start-lesson-btn {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    font-size: var(--text-base);
}

/* Module View Responsive Design */
@media (max-width: 768px) {
    .module-view .module-view {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .module-view .module-view-title {
        font-size: 1.875rem;
    }
    
    .module-view .module-view-lesson {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "number content"
            ". actions"; /* Align actions to the right bottom */
    }
    
    .module-view .lesson-number {
        align-self: center; /* Keep centered vertically */
    }

    .module-view .lesson-actions {
        justify-self: stretch;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .module-view .module-view-title {
        font-size: 1.6rem;
    }

    .module-view .module-view-description {
        padding: var(--spacing-sm);
    }

    .module-view .module-view-description h2 {
        font-size: 1.3rem;
    }

    .module-view .module-description-content {
        font-size: 0.95rem;
    }

    .module-view .module-view-lesson {
        grid-template-columns: 1fr; /* Stack everything */
        grid-template-areas:
            "number"
            "content"
            "actions";
        text-align: center;
    }
    
    .module-view .lesson-number {
        justify-self: center;
        margin-bottom: var(--spacing-xs);
    }
    
    .module-view .lesson-status {
        justify-content: center;
    }

    .module-view .lesson-actions {
        margin-top: var(--spacing-sm);
        justify-content: center;
    }
}

/* Module View Footer */
.module-view-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

/* Module View Lesson Skeleton Loader */
.module-view-lesson-skeleton {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 0px 0px 1px var(--shadow-border);
}

.module-view-lesson-skeleton .lesson-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-primary);
    border-radius: 50%;
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    flex-shrink: 0;
}

.module-view-lesson-skeleton .lesson-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.module-view-lesson-skeleton .skeleton-title {
    height: 24px;
    width: 70%;
    border-radius: var(--radius-xs);
}

.module-view-lesson-skeleton .skeleton-description {
    height: 16px;
    width: 100%;
    border-radius: var(--radius-xs);
}

.module-view-lesson-skeleton .skeleton-status {
    height: 20px;
    width: 120px;
    border-radius: var(--radius-xs);
    margin-top: var(--spacing-xs);
}

.module-view-lesson-skeleton .lesson-actions {
    flex-shrink: 0;
}

.module-view-lesson-skeleton .skeleton-button {
    height: 40px;
    width: 100px;
    border-radius: var(--radius-sm);
}

/* Skeleton animation */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--skeleton-base, #e0e0e0) 0%,
        var(--skeleton-shine, #f0f0f0) 50%,
        var(--skeleton-base, #e0e0e0) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-shine 1.5s ease-in-out infinite;
}

@keyframes skeleton-shine {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

[data-theme="dark"] .skeleton {
    --skeleton-base: #2a2a2a;
    --skeleton-shine: #333333;
} 
/* ==========================================================================
   NAVIGATION STYLES
   All navigation-related styles for modules and lessons
   ========================================================================== */

/* Module Container */
#left-sidebar .nav-module {
    margin-bottom: var(--spacing-md);
}

/* Module Header (contains toggle button and module title) */
#left-sidebar .nav-module .module-header {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: var(--spacing-md); /* Space below header when expanded */
}

/* Module Info Container */
#left-sidebar .nav-module .module-info { 
    flex-grow: 1;
    min-width: 0; /* Allow text to shrink */
}

/* Module Title */
#left-sidebar .nav-module .module-title {
    font-weight: 400; 
    font-size: var(--text-md);
    line-height: 1.4; /* Ensure text doesn't clip icon if title wraps */
    margin: 0; 
    overflow: hidden; /* for marquee */
    white-space: nowrap;
    letter-spacing: var(--ls-lg);
}

/* Module Toggle Button */
#left-sidebar .nav-module .module-toggle {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    line-height: 1;
    display: flex;
    align-items: center;
    flex-shrink: 0; 
}

/* Toggle Icon */
#left-sidebar .nav-module .toggle-icon {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s ease;
    align-self: center;
}

#left-sidebar .nav-module.expanded .toggle-icon {
    transform: rotate(90deg);
}

/* Module Lessons Container */
#left-sidebar .nav-module .module-lessons {
    display: none !important;
    padding-left: 20px;
    overflow: hidden;
    transition: var(--lesson-transition);
    background: var(--lesson-bg);
    border-radius: var(--lesson-radius);
    margin-top: var(--spacing-xs);
}

#left-sidebar .nav-module.expanded .module-lessons {
    display: block !important;
}

/* Alternative using the expanded class on the lessons container */
#left-sidebar .module-lessons.expanded {
    display: block !important;
}

/* ==========================================================================
   LESSON STYLES
   Individual lesson styling and states
   ========================================================================== */

/* Lesson Item */
#left-sidebar .nav-lesson {
    padding: 6px 10px;
    cursor: pointer;
    border-radius: 8px;
    margin-bottom: var(--spacing-xs); /* Space between lessons */
    background: transparent;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    position: relative;
}

#left-sidebar .nav-lesson:hover {
    border: 1px solid var(--border-color);
    opacity: 1 !important;
}

#left-sidebar .nav-lesson.current {
    color: var(--text-primary);
    position: relative;
    box-shadow: 0 0 1px 0px #0072ff;
    border: 1px solid rgba(0, 114, 255, 0.5);
}

#left-sidebar .nav-lesson.completed {
    opacity: 0.75;
}

/* Lesson Title Row */
#left-sidebar .lesson-title-row {
    display: flex;
    align-items: center;
    width: 100%; 
    min-width: 0; /* Allow to shrink */
    margin: 3px 0px;
}

/* Lesson Title */
#left-sidebar .lesson-title {
    font-size: var(--text-md);
    line-height: normal;
    color: var(--text-secondary);
    overflow: hidden; /* Prepare for marquee */
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Progress Indicator Container */
#left-sidebar .lesson-progress-indicator {
    flex-shrink: 0;
    width: 1.2rem;
    height: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Circular Progress Indicator */
#left-sidebar .circular-progress-sidebar {
    position: relative;
    width: 1.2rem;
    height: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

#left-sidebar .progress-circle {
    width: 1.2rem;
    height: 1.2rem;
    transform: rotate(-90deg);
    position: absolute;
    top: 0;
    left: 0;
}

#left-sidebar .progress-circle-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 2;
    opacity: 0.6;
}

#left-sidebar .progress-circle-fill {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 2;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.3s ease;
}

/* Minimal styling for very low progress */
#left-sidebar .circular-progress-sidebar[data-progress="0"] .progress-circle-fill {
    opacity: 0;
}

/* Title Check Icon */
#left-sidebar .title-check-icon {
    width: 1rem;
    height: 1rem;
    color: var(--success-color);
    flex-shrink: 0; 
}

/* ==========================================================================
   LOADING STATES
   Loading, error, and empty states for lessons
   ========================================================================== */

/* Lesson Loading States */
.lessons-loading {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.lessons-loading.active {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.lessons-loading .loading-icon {
    width: 16px;
    height: 16px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.lessons-error {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--color-danger);
    font-size: var(--font-size-sm);
}

.lessons-error p {
    margin: 0 0 var(--spacing-sm) 0;
}

.lessons-error .retry-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-danger);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.lessons-error .retry-btn:hover {
    opacity: 0.8;
}

.no-lessons {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* ==========================================================================
   RESPONSIVE ADJUSTMENTS
   Mobile and tablet responsive styles
   ========================================================================== */

/* Responsive adjustments for smaller screens */
@media (max-width: 420px) {
    #left-sidebar .module-lessons {
        margin-left: calc(15px + var(--spacing-xs));
    }
}
/* 
PRACTICE CONTENT STYLES
======================
Styles for practice lesson components and question types
*/

/* ============================================ */
/*     Main Lesson Type (Practice) Container    */
/* ============================================ */

.lesson-practice-container {
    width: 100%;
    max-width: 100%;
    position: relative;
    overflow: visible; /*So box shadow is not cut off*/
    min-height: 400px;
}

/* ============================================ */
/*               Question Container             */
/* ============================================ */

.practice-question {
    width: 100%;
}

/* New seamless header with navigation */
.question-header-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}
.question-header-nav h3 {
    margin: 0;
}

.question-nav-buttons {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.question-nav-buttons .bttn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.question-nav-buttons .bttn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.question-type-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--badge-padding-y) var(--badge-padding-x);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: var(--ls-base);
    border-radius: 5px;
    line-height: normal;
    margin-bottom: 1.5rem; /* Space above question content */
}

.question-type-badge.mcq {
    background: color-mix(in srgb, var(--brand-color) 15%, transparent);
    color: var(--brand-color);
    border: 1px solid color-mix(in srgb, var(--brand-color) 25%, transparent);
}

.question-type-badge.frq {
    background: color-mix(in srgb, var(--active-green) 15%, transparent);
    color: var(--active-green);
    border: 1px solid color-mix(in srgb, var(--active-green) 25%, transparent);
}

.question-type-badge.gq {
    background: color-mix(in srgb, #ff6b35 15%, transparent);
    color: #ff6b35;
    border: 1px solid color-mix(in srgb, #ff6b35 25%, transparent);
}

/* ============================================ */
/*              Question Navigation             */
/* ============================================ */

.question-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 100px;
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.question-progress {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary-color);
    letter-spacing: var(--ls-sm);
}

/* ============================================ */
/*               Question Content               */
/* ============================================ */

.question-content {
    margin-bottom: 2rem;
}

[data-theme="dark"] .question-images {
    background: black;
    padding: 1.5rem;
    border-radius: 12px;
}

[data-theme="dark"] .question-content img {
    filter: invert(1) hue-rotate(180deg);
}

.question-text {
    font-size: var(--text-base);
    color: var(--text-primary-color);
    margin-bottom: 1.5rem;
}


.question-images, .choice-images, .part-images {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.question-image, .choice-image, .part-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    align-self: center;
}

/* ============================================ */
/*              MCQ (Multiple Choice)           */
/* ============================================ */

.mcq-choices {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 3rem;
}

.mcq-choice {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: .55rem 2rem;
    border: .5px solid var(--input-border-color);
    box-shadow: -1px 1px 0px 1px var(--shadow-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.mcq-choice p {
    margin: 0;
    line-height: 1.6rem;
}

.mcq-choice:hover {
    border-color: var(--brand-light) !important;
    transform: translateY(2px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--brand-color) 15%, transparent);
}

.mcq-choice:has(.mcq-input:checked) {
    border-color: var(--brand-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-color) 20%, transparent),
                0 4px 12px color-mix(in srgb, var(--brand-color) 15%, transparent);
    transform: translateY(1px);
}

.mcq-choice:has(.mcq-input:checked)::before {
    opacity: 1;
}

/* Radio button */
.mcq-input {
    flex-shrink: 0;
    margin: 0;
    accent-color: var(--brand-color);
    width: 1rem;
    height: 1rem;
    cursor: pointer;
    align-self: center;
}

.choice-text {
    flex: 1;
    font-size: var(--text-base);
}

/* ============================================ */
/*                FRQ (Free Response)           */
/* ============================================ */

.frq-parts {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin: 1.5rem 0;
}

/* FRQ-specific meta elements */
.frq-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.frq-label {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary-color);
    letter-spacing: var(--ls-md);
}

.frq-points {
    font-size: var(--text-sm);
    color: var(--text-tertiary-color);
    background: var(--card-bg-color);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    border: 1px solid var(--input-border-color);
}

.part-question {
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary-color);
    margin-bottom: 1rem;
}

.frq-answer, .gq-answer-input {
    display: flex;
    width: 100%;
    min-height: 50px;
    max-height: 170px;
    overflow-y: auto;
    padding: 0.75rem;
    border: 1px solid transparent;
    border-radius: 10px;
    font-family: inherit;
    font-size: var(--text-base);
    line-height: 2;
    color: var(--text-primary-color);
    background: var(--input-bg);
    resize: vertical;
    transition: all .3s ease;
    border: .5px solid var(--border-color);
}

.gq-answer-input {
    box-shadow: -1px 1px 0px 1px var(--shadow-border);
}

.frq-answer:focus, .gq-answer-input:focus {
    outline: none;
    border-color: var(--brand-light);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--brand-color) 20%, transparent);
}

.frq-answer::placeholder, .gq-answer-input::placeholder {
    color: var(--text-tertiary-color);
}

/* ============================================ */
/*               GQ (General Question)          */
/* ============================================ */

.gq-answer {
    margin: 1.5rem 0;
}

/* ============================================ */
/*     Feedback States for MCQ, FRQ, and GQ     */
/* ============================================ */
.practice-question .incorrect {
    border-color: #ee1c1c !important;
    background: color-mix(in srgb, #ee1c1c 6%, var(--bg-color)) !important;
    box-shadow: 0 0 12px 0 color-mix(in srgb, #ee1c1c 20%, transparent) !important;
}

.practice-question .correct {
    border-color: var(--active-green) !important;
    background: color-mix(in srgb, var(--active-green) 6%, var(--bg-color)) !important;
    box-shadow: 0 0 12px 0 color-mix(in srgb, var(--active-green) 20%, transparent) !important;
}

.practice-question .partial {
    border-color: #f3a31a !important;
    background: color-mix(in srgb, #f3a31a 6%, var(--bg-color)) !important;
    box-shadow: 0 0 12px 0px color-mix(in srgb, #f3a31a 20%, transparent) !important;
}

/* ============================================ */
/*              Action Buttons                 */
/* ============================================ */

.question-actions {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Make all buttons in lesson-practice container taller */
.lesson-practice-container .bttn {
    min-height: 2.5rem;
    min-width: 2.5rem;
    padding: 0 1.25rem;
}

.bttn .animate-spin {
    animation: spin 1s linear infinite;
}

/* ============================================ */
/*                 Feedback                     */
/* ============================================ */

.question-feedback {
    margin: 1.5rem 0;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--input-border-color);
    background: var(--bg-color);
    font-size: var(--text-base);
}

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

.feedback-status svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.status-text {
    font-size: var(--text-base);
    font-weight: 500;
    letter-spacing: var(--ls-md);
}

.score-text {
    font-size: var(--text-sm);
    color: var(--text-secondary-color);
    margin-left: auto;
}

.feedback-content {
    padding-top: 1rem;
    border-top: 1px solid var(--input-border-color);
    margin-top: 1rem;
}

/* ============================================ */
/*                Explanation                   */
/* ============================================ */

.question-explanation {
    margin-top: 2rem;
}

.explanation-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.answer-text {
    border: 2px dashed var(--shadow-border);
    border-radius: 12px;
    padding-left: 2rem;
}

/* ============================================ */
/*          Base Collapsible Component          */
/* ============================================ */

/* Base collapsible SECTION */
.collapsible-section {
    box-shadow: 0 0 1px 1px var(--shadow-border);
    border: .5px solid transparent;
    border-radius: 12px;
    transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
}

.collapsible-section.is-expanded {
    box-shadow: -.5px .5px 0px .5px var(--shadow-border);
    border: .5px solid var(--border-color);
}

.collapsible-section--answer.is-expanded,
.collapsible-section--explanation.is-expanded {
    box-shadow: 0 0 1px 1px transparent;
    border: .5px solid transparent;
    border-radius: 12px !important;
    overflow: visible !important;
}

/* Base collapsible header */
.collapsible-header {
    display: flex;
    align-items: center;
    padding: 1.25rem;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

/* Collapse icon with smooth rotation */
.collapse-icon {
    width: 20px;
    height: 20px;
    color: var(--text-muted-color);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s ease;
}

/* Rotate chevron based on expanded state */
.collapsible-section:not(.is-expanded) .collapse-icon[data-lucide="chevron-up"] {
    transform: rotate(180deg);
}

.collapsible-header:hover .collapse-icon {
    color: var(--text-primary-color);
}

/* Base collapsible CONTENT */
.collapsible-content {
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.collapsible-content.is-expanded {
    max-height: fit-content; /* Increased for better animation */
    opacity: 1;
    overflow: visible !important;
    padding: 1.25rem;
}

.collapsible-content.is-collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0;
    border: none !important;
}

/* Special overflow handling for answer/explanation to allow table breakout */
.collapsible-section--answer .collapsible-content.is-expanded,
.collapsible-section--explanation .collapsible-content.is-expanded {
    margin: 0; /* Reset margin for explanation/answer sections */
    overflow: visible !important; /* Allow children to break out */
    max-width: none !important; /* Remove width constraints */
}

/* ============================================ */
/*              Error Fallback                 */
/* ============================================ */

.lesson-practice-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 2rem;
    background: var(--card-bg-color);
    border-radius: 12px;
    border: 1px solid var(--input-border-color);
    margin: 2rem 0;
}

.lesson-practice-error .error-icon {
    width: 48px;
    height: 48px;
    color: var(--text-tertiary-color);
    margin-bottom: 1rem;
}

.lesson-practice-error h3 {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--text-primary-color);
    margin-bottom: 0.5rem;
    letter-spacing: var(--ls-md);
}

.lesson-practice-error p {
    font-size: var(--text-base);
    color: var(--text-secondary-color);
    margin-bottom: 1.5rem;
    max-width: 400px;
}

/* ============================================ */
/*              Responsive Design              */
/* ============================================ */

/* Custom scrollbar for explanation horizontal scroll */
.question-explanation {
    scrollbar-width: thin;
    scrollbar-color: var(--text-tertiary-color) var(--card-bg-color);
}

.question-explanation::-webkit-scrollbar {
    height: 8px; /* Horizontal scrollbar */
}

.question-explanation::-webkit-scrollbar-track {
    background: var(--card-bg-color);
    border-radius: 4px;
}

.question-explanation::-webkit-scrollbar-thumb {
    background: var(--text-tertiary-color);
    border-radius: 4px;
}

.question-explanation::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary-color);
}

/* ============================================ */
/*                 State Management             */
/* ============================================ */

/* Loading State */
.practice-loading-state {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 400px;
    z-index: 10;
}

.practice-loading-state[style*="display: none"] {
    display: none !important;
    visibility: hidden !important;
    z-index: -1 !important;
}

.practice-loading-state .loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--input-border-color);
    border-top: 2px solid var(--text-primary-color, #fff);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    flex-shrink: 0;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.practice-loading-state p {
    margin: .5rem 0;
    color: var(--text-tertiary-color);
    font-size: var(--text-base) !important;
    font-weight: 400;
    letter-spacing: var(--ls-sm);
}

/* Error State */
.practice-error-state {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--card-bg-color);
    text-align: center;
    min-height: 400px;
    z-index: 10;
}

.practice-error-state[style*="display: none"] {
    display: none !important;
    visibility: hidden !important;
    z-index: -1 !important;
}

.practice-error-state .error-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.practice-error-state p {
    margin: 0 0 1.5rem 0;
    color: var(--text-secondary-color);
    font-size: var(--text-base);
}

.practice-error-state .retry-practice-btn {
    margin: 0;
}

/* Content State */
.practice-content-container {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 400px;
    z-index: 1;
}

.practice-content-container[style*="display: block"] {
    display: block !important;
    visibility: visible !important;
}

/* ============================================ */
/*        Custom Table Breakout Wrapper         */
/* ============================================ */
/* Ensure explanation containers allow breakout */
.question-explanation,
.explanation-content {
    overflow: visible !important;
}

.table-breakout-wrapper {
    position: relative;
    margin: 0 0 1rem 0;
    max-width: 100%; /* Contained by default */
    overflow-x: auto;
    overflow-y: visible;
    
}

.table-breakout-wrapper.scrollable {
    /* Add padding to prevent table shadows from being cut off */
    /*more padding on bottom to account for scroll indicator*/
    padding: 15px 10px 30px 10px;
}

/* Table inside breakout wrapper */
.table-breakout-wrapper table {
    margin: 0 auto; /* Center the table */
    width: 100%; /* Fill the wrapper width */
    max-width: 100%; /* Don't exceed wrapper */
}

/* Breakout on larger screens when there's space */
@media (min-width: 1100px) {
    .table-breakout-wrapper {
        margin: 0rem calc(-1 * min(6rem, 12vw)) 1.5rem; /* Keep top margin, dynamic sides */
        max-width: min(1200px, 90vw); /* Max 1200px or 90vw, whichever is smaller */
        overflow-x: visible; /* No scroll when breaking out */
    }
}

/* On mobile/tablet, allow table to be its natural width for scrolling */
@media (max-width: 1099px) {

    .table-breakout-wrapper table {
        min-width: 950px; /* Preserve table's natural width for scrolling */
    }
}

/* Scroll indicator above table */
.table-scroll-indicator {
    position: absolute;
    top: 0px;
    left: 1.5rem; /* Align with table content */
    font-size: var(--text-sm);
    color: var(--text-muted-color);
    background: transparent;
    padding: 0;
    line-height: 1;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 10;
}

/* Show scroll indicator on hover when scrollable */
.table-breakout-wrapper.scrollable:hover .table-scroll-indicator {
    opacity: 0.9;
}

/* ============================================ */
/*            Enhanced Feedback                 */
/* ============================================ */

.feedback-actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.retry-question-btn {
    background: var(--card-bg-color);
    border: 1px solid var(--input-border-color);
    color: var(--text-primary-color);
    transition: all 0.2s ease;
}

.retry-question-btn:hover {
    background: var(--card-hover-bg-color);
    border-color: var(--text-secondary-color);
    transform: translateY(-1px);
}



/* ============================================ */
/*             Mobile Improvements             */
/* ============================================ */

@media (max-width: 768px) {
    .feedback-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .retry-question-btn {
        width: 100%;
        justify-content: center;
    }
    .question-actions {
        flex-direction: column;
        gap: 1rem;
    }

    .question-actions .bttn {
        width: 100%;
        justify-content: center;
    }
    
    .question-header-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .question-nav-buttons {
        align-self: stretch;
        justify-content: space-between;
    }
}









/* Part scores for FRQ feedback */
.part-scores {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--input-border-color);
}

.part-score-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: var(--text-sm);
}

.part-score-item:last-child {
    margin-bottom: 0;
}

.part-score-item .part-label {
    font-weight: 600;
    color: var(--text-secondary-color);
    min-width: 60px;
}

.part-score-item .part-score {
    font-weight: 500;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: var(--text-xs);
}

.part-score-item .part-score.correct {
    background: color-mix(in srgb, var(--active-green) 15%, transparent);
    color: var(--active-green);
}

.part-score-item .part-score.incorrect {
    background: color-mix(in srgb, #dc2626 15%, transparent);
    color: #dc2626;
}

.part-score-item .part-score.partial {
    background: color-mix(in srgb, #f59e0b 15%, transparent);
    color: #f59e0b;
}

.part-score-item .part-feedback {
    flex: 1;
    color: var(--text-secondary-color);
    line-height: 1.5;
}
/*
SIDEBAR / NAVIGATION STYLES
===========================
Dedicated styling left, right, and bottom control bars
All styles are scoped to properly to prevent conflicts with class names
*/

/* Common Sidebar Styles
================================================== */
.sidebar-header {
    margin: var(--spacing-md) 0;
}

.sidebar-header h3 {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
}

/* 
Left side bar. 
Layout: #course-navigation --> .nav-content --> nav-modules --> nav-module --> module-lessons --> nav-lesson 
*/
#left-sidebar {
    grid-area: left-sidebar;
    border-right: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    margin: 0;
    width: var(--sidebar-width);
    min-width: var(--sidebar-width); /* Prevent shrinking below this */
    padding: var(--spacing-md);
    background: var(--sidebar-bg);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 10; /* Ensure it stays above content but below header */
    box-sizing: border-box; /* Include border in width calculation */
}

/* Ensure border stays visible when sidebar is not collapsed */
#left-sidebar:not(.collapsed) {
    border-right: 1px solid var(--border-color);
}

/* Navigation styles have been moved to navigation.css */

/* Responsive adjustments for smaller screens - moved to navigation.css */


/* Right Sidebar
================================================== */

#right-sidebar {
    grid-area: right-sidebar;
    background-color: var(--sidebar-bg);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    overflow-x: visible;
    padding: var(--spacing-md);
    transition: width 0.3s ease;
    position: relative;
    margin: 0;
    width: var(--sidebar-width);
    min-width: var(--sidebar-width); /* Prevent shrinking below this */
    z-index: 10; /* Ensure it stays above content but below header */
    box-sizing: border-box; /* Include border in width calculation */
}

/* Ensure border stays visible when sidebar is not collapsed */
#right-sidebar:not(.collapsed) {
    border-left: 1px solid var(--border-color);
}

.sidebar-resize-handle {
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    cursor: col-resize;
    background: transparent;
    z-index: 100;
}

/* Custom resize handle design */
#right-sidebar .sidebar-resize-handle::after {
    content: '⋮';
    position: absolute;
    left: -2px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-primary);
    font-size: var(--text-lg);
    line-height: normal;
    writing-mode: vertical-lr;
    text-orientation: upright;
    letter-spacing: -4px;
    padding: 10px 0;
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

#right-sidebar .sidebar-resize-handle:hover::after {
    color: #64748b;
}

#right-sidebar .sidebar-resize-handle {
    left: 0;
}

/* Bottom Control Bar
================================================== */
#bottom-control-bar {
    grid-area: controls;
    background-color: var(--control-bar-bg);
    border-top: 1px solid var(--border-color);
    height: var(--control-bar-height, 60px);
    position: sticky;
    bottom: 0;
    z-index: 110;
    box-shadow: 0 0 -2px 10px rgba(0, 0, 0, 0.05);
    overflow-x: hidden; 
}

.control-bar-container {
    max-width: 100%;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-md);
}

/* Back, Redo, Complete Lesson, centered in the bottom control bar */
.lesson-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
/* Lesson Completion Status Styles */
.lesson-completion-status {
    font-size: var(--text-md);
    font-weight: 500;
    line-height: normal;
    border-radius: var(--bttn-radius);
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    transition: all 0.3s ease;
    cursor: default;
}

.lesson-completion-status.in-progress {
    color: var(--text-secondary-color);
}

.lesson-completion-status.completed {
    color: var(--active-green);
    border: 1px solid rgba(0, 210, 0, 0.2);
    background-color: rgba(0, 210, 0, 0.05);
    padding: .5rem 1rem;
}
/*
SINGLE COURSE VIEW STYLES
=========================
Styles for the single course overview page.

Includes:
- Course information header and layout
- Course metadata and progress display
- Course module cards and interactions
- Course action buttons
- Responsive design for single course view
*/

/* Single Course View Layout */
.single-course-view {
    max-width: 1200px; /* Wider container */
    margin: 0 auto;
    padding: var(--spacing-lg);
    overflow-x: hidden;
    box-sizing: border-box;
}

.single-course-view .single-course-view-header {
    text-align: center;
    position: relative;
}

.single-course-view .single-course-view-title {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 2rem;
    font-size: var(--text-xxl);
    letter-spacing: var(--ls-base);
}

.single-course-view .single-course-view-meta {
    display: flex; 
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: var(--text-secondary);
}

.single-course-view .course-meta-item {
    display: flex;
    align-items: center;
    font-size: var(--text-base);
    gap: var(--spacing-xs);
}

.single-course-view .single-course-view-meta .bttn {
    font-size: var(--text-md);
}

.single-course-view .course-action-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.single-course-view .single-course-view-modules {
    margin-top: 3rem;
}

.single-course-view .single-course-view-modules .modules-section-title { 
    display: block;
    font-size: var(--text-lg);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    color: var(--text-tertiary-color);
    letter-spacing: var(--ls-base);
    text-align: left;
}

.single-course-view .modules-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* Fixed 3 columns */
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

/* Course Module Cards (within Single Course View) */
.single-course-view .single-course-view-module { 
    border-radius: 12px;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    position: relative;
    box-shadow: 0 1px 0px 2px var(--shadow-border);
    padding: var(--spacing-md);
    min-height: 150px;
 
    transition: all 0.3s ease-in-out;
}

/* Simple module number badge */
.single-course-view .module-number-badge {
    background: transparent;
    border: 1px solid var(--shadow-border);
    color: var(--text-muted-color);
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.single-course-view .module-number {
    font-size: var(--text-base);
    font-weight: 500;
    line-height: 1;
}

.single-course-view .single-course-view-module .module-meta-line {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-tertiary-color);
    margin-bottom: var(--spacing-md);
}

.single-course-view .single-course-view-module .status-dot {
    color: var(--text-muted-color);
    font-weight: bold;
}

.single-course-view .single-course-view-module .module-status.completed {
    color: var(--success-color);
    background-color: rgba(0, 205, 0, 0.05);
    box-shadow: 0 0px 8px 1px rgba(0, 205, 0, 0.1);
    border-radius: 6px;
    padding: 0.1rem 0.4rem;
    font-weight: 400;
}

.single-course-view .single-course-view-module .module-status.in-progress {
    color: rgb(255, 152, 0);
    background-color: rgba(255, 152, 0, 0.05);
    box-shadow: 0 0px 8px 1px rgba(255, 152, 0, 0.1);
    border-radius: 6px;
    padding: 0.1rem 0.4rem;
    font-weight: 400;
}

.single-course-view .single-course-view-module .module-status.not-started {
    color: var(--text-muted-color);
    font-weight: 500;
}

.single-course-view-module .module-header {
    display: flex;
    flex-direction: column;
    margin-bottom: auto;
}

.single-course-view .single-course-view-module .module-title {
    font-size: var(--text-lg);
    color: var(--text-primary);
    line-height: 1.6;
    font-weight: 500;
    margin: 0;
}

.single-course-view .single-course-view-module .module-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: var(--spacing-lg);
}

.single-course-view .single-course-view-module .module-actions .bttn {
    width: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
    .single-course-view .modules-list {
        grid-template-columns: 1fr; /* Single column on mobile */
        gap: var(--spacing-md);
    }
    
    .single-course-view {
        max-width: 100%;
        padding: var(--spacing-md);
    }
    
    .single-course-view .single-course-view-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .single-course-view .modules-list {
        grid-template-columns: repeat(2, 1fr); /* Two columns on tablet */
    }
}