/* CSS for course list and course detail pages */

/* --- Course List Page Styles --- */
.course-list-container {
    max-width: 960px;
    margin: 30px auto;
    padding: 20px;
    background-color: #FFFDE7; /* Light pastel yellow, consistent with other containers */
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.course-list-container h1 {
    color: #00796B; /* Teal 700 */
    margin-bottom: 25px;
    text-align: center;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.course-card {
    background-color: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    overflow: hidden; /* Ensures image corners are rounded if image is direct child */
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

.course-card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: #B2DFDB; /* Placeholder color */
}

.course-card-content {
    padding: 20px;
    flex-grow: 1; /* Allows content to fill space and push button down */
    display: flex;
    flex-direction: column;
}

.course-card-content h3 {
    font-size: 1.4rem;
    color: #00796B; /* Teal 700 */
    margin-top: 0;
    margin-bottom: 10px;
}

.course-card-content p {
    font-size: 0.95rem;
    color: #546E7A; /* Blue Grey 600 */
    line-height: 1.5;
    margin-bottom: 15px;
    flex-grow: 1; /* Allows paragraph to take available space */
}

.course-card-actions {
    padding: 0 20px 20px; /* Padding for the button area */
}

.course-card .mdc-button { /* Ensure button styling is consistent */
    width: 100%;
    box-sizing: border-box; /* Include padding and border in the element's total width and height */
}

/* --- Course Detail Page Styles (Moved from inline and previous style.css block) --- */
.course-detail-container {
    padding: 20px;
    max-width: 900px; 
    margin: 20px auto;
    background-color: #fff; 
    border-radius: 12px; 
    box-shadow: 0 4px 16px rgba(0,0,0,0.08); 
}

.course-header-top { 
    display: flex;
    align-items: flex-start;
    gap: 25px; 
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.course-icon-large-detail { 
    width: 120px; 
    height: 120px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    background-color: #B2DFDB; 
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.course-icon-large-detail.placeholder-icon .material-icons {
    font-size: 60px; 
    color: #00796B; 
}

.course-title-section-detail {
    flex-grow: 1;
}

.course-title-section-detail h1 { 
    color: #00796B; 
    font-size: 2.5rem;
    margin-top: 0;
    margin-bottom: 8px;
}

.course-difficulty-detail { 
    color: #00796B; 
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 10px;
}

.course-description-detail {
    font-size: 1rem;
    color: #546E7A; 
    line-height: 1.6;
}

.course-main-content-detail h2 { 
    color: #00796B; 
    margin-top: 30px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #4DB6AC; 
    font-size: 1.8rem;
}

.course-main-content-detail h3 { 
    color: #37474F; 
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.course-layout-grid {
    display: grid;
    grid-template-columns: 2fr 1fr; 
    gap: 25px;
}

@media (max-width: 768px) { 
    .course-layout-grid {
        grid-template-columns: 1fr;
    }
    .course-secondary-column {
        margin-top: 20px; /* Add some space when it stacks */
    }
}

.course-primary-column {
    min-width: 0; 
}

.course-secondary-column {
    background-color: #F5F5F5; 
    padding: 20px;
    border-radius: 8px;
    min-width: 0;
    /* Ensure proper containment to prevent overflow */
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}
.course-secondary-column section {
    margin-bottom: 20px;
}
.course-secondary-column section:last-child {
    margin-bottom: 0;
}

.learning-outcomes-section h2, .prerequisites-section h3, .course-meta-info h3 {
    font-weight: 600; 
}
.learning-outcomes-section h2 {
    margin-top: 0; 
}

.learning-outcomes-list-detail { 
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
}
.learning-outcomes-list-detail li {
    display: flex;
    align-items: center;
    font-size: 1rem;
    color: #37474F;
    margin-bottom: 8px;
    line-height: 1.5;
}
.learning-outcomes-list-detail li .material-icons {
    color: #4CAF50; 
    margin-right: 10px;
    font-size: 1.25rem; 
}

.prerequisites-section p, .course-meta-info p {
    margin-bottom: 10px;
    line-height: 1.6;
    color: #546E7A; 
    font-size: 0.95rem;
}
.course-meta-info p {
    display: flex;
    align-items: center;
}
.course-meta-info p .material-icons {
    margin-right: 8px;
    color: #00796B; 
    font-size: 1.1rem;
}

.course-actions-section-detail { 
    margin: 0 0 20px 0; 
}
.course-actions-flex {
    display: flex;
    flex-wrap: wrap; /* Allow buttons to wrap if not enough horizontal space */
    align-items: center; /* Vertically align items if they have different heights */
    gap: 12px; /* Increased gap for better separation (applies to rows and columns of wrapped items) */
}

.mdc-button--fullwidth {
    width: 100%;
}

.section-item-detail { 
    background-color: #FFFFFF; 
    border: 1px solid #E0E0E0; 
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.section-header-detail {
    padding: 12px 16px;
    border-bottom: 1px solid #E0E0E0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #F5F5F5; 
    border-top-left-radius: 8px; 
    border-top-right-radius: 8px;
}
.section-header-detail:hover {
    background-color: #EEEEEE; 
}

.section-title-area {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.section-title-detail { 
    font-size: 1.3rem;
    color: #004D40; 
    margin: 0;
}

.premium-badge {
    background: linear-gradient(135deg, #FFD700, #FFA000);
    color: #FFFFFF;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 4px rgba(255, 160, 0, 0.3);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.premium-badge .material-icons {
    font-size: 16px;
}

.section-toggle-icon {
    transition: transform 0.2s ease-in-out;
}
.section-header-detail[aria-expanded="true"] .section-toggle-icon {
    transform: rotate(180deg);
}

.section-description-detail { 
    color: #546E7A; 
    margin: 12px 16px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.topic-list-detail { 
    border-radius: 4px; 
    padding-top: 0; 
    padding-bottom: 0; 
}

.topic-item-detail.mdc-list-item { 
    border-bottom: 1px solid #E0E0E0;
    cursor: pointer;
}
.topic-item-detail.mdc-list-item:last-child {
    border-bottom: none;
}
.topic-item-detail.mdc-list-item:hover {
    background-color: #E0F2F1; 
}

.topic-item-detail .mdc-list-item__graphic { 
    color: #FFB74D; 
}

.topic-item-detail .mdc-list-item__secondary-text { 
    font-size: 0.9em;
    color: #78909C; 
}

.topic-item-detail .mdc-list-item__meta.topic-status-icon { 
    color: #B0BEC5; 
}
.topic-item-detail .mdc-list-item__meta.topic-status-icon.completed {
    color: #4CAF50; 
}

.topic-item-detail a {
    text-decoration: none;
    color: #333;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.topic-item-detail a:hover {
    background-color: #E0F2F1;
    transform: translateX(4px);
}

.topic-item-detail.exercise-topic a {
    background: linear-gradient(135deg, #E8F5E8, #F0F8F0);
    border-left: 4px solid #4CAF50;
}

.topic-item-detail.exercise-topic a:hover {
    background: linear-gradient(135deg, #C8E6C9, #E8F5E8);
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.2);
}

.topic-icon {
    font-size: 18px !important;
    min-width: 18px;
}

.topic-icon.exercise-icon {
    color: #4CAF50 !important;
}

.topic-status-icon {
    font-size: 16px !important;
    margin-left: auto;
}

.topic-status-icon.completed {
    color: #4CAF50 !important;
}

.topic-title {
    flex-grow: 1;
    font-weight: 500;
}

.exercise-badge {
    background: linear-gradient(135deg, #4CAF50, #66BB6A);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(76, 175, 80, 0.3);
}

/* --- Topic Detail Page Styles --- */
.topic-detail-container {
    max-width: 1600px; /* Adjusted from 900px to 1600px */
    margin: 30px auto;
    padding: 0;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    overflow: hidden;
}

.topic-header {
    background: linear-gradient(135deg, #00796B, #4DB6AC);
    color: white;
    padding: 30px;
}

.topic-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.content-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.content-type-badge.exercise {
    background-color: rgba(76, 175, 80, 0.2);
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.content-type-badge.video {
    background-color: rgba(255, 87, 34, 0.2);
    border: 1px solid rgba(255, 87, 34, 0.3);
}

.content-type-badge.quiz {
    background-color: rgba(156, 39, 176, 0.2);
    border: 1px solid rgba(156, 39, 176, 0.3);
}

.content-type-badge.article {
    background-color: rgba(33, 150, 243, 0.2);
    border: 1px solid rgba(33, 150, 243, 0.3);
}

.content-type-badge .material-icons {
    font-size: 14px;
}

.section-info {
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
    font-weight: 400;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

.topic-header h1 {
    color: white;
    font-size: 2.2rem;
    margin: 0 0 10px 0;
    font-weight: 600;
}

.duration-info {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
}

.duration-info .material-icons {
    font-size: 16px;
}

.topic-main-content {
    padding: 0;
}

.topic-content-wrapper {
    padding: 30px;
}

.topic-content.card {
    background-color: #f8f9fa;
    border: none;
    border-radius: 8px;
    margin-bottom: 30px;
}

.topic-content .card-body {
    padding: 25px;
    line-height: 1.8;
    color: #333;
    font-size: 16px;
}

.topic-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.topic-actions {
    display: flex;
    justify-content: center;
    margin: 30px 0;
}

.completion-btn {
    min-width: 200px;
    height: 48px;
    font-weight: 600;
    text-transform: none;
    border-radius: 24px;
}

.completion-btn.completed {
    background-color: #4CAF50;
    color: white;
}

.completion-btn .material-icons {
    margin-right: 8px;
}

.topic-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 30px;
    background: linear-gradient(135deg, rgba(0, 121, 107, 0.05), rgba(77, 182, 172, 0.05));
    border-top: 1px solid rgba(0, 121, 107, 0.1);
    border-radius: 0 0 12px 12px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 24px;
    text-decoration: none;
    border-radius: 24px !important;
    transition: all 0.3s ease;
    width: auto; /* Allow button to size based on content */
    display: inline-flex; /* Ensure button wraps content snugly */
    text-transform: none;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.12);
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
    z-index: 0;
    pointer-events: none;
}

.nav-btn > *:not(.nav-text::after) {
    position: relative;
    z-index: 1;
}

.nav-btn:hover::before {
    left: 100%;
}

.nav-previous .nav-btn {
    flex-direction: row;
    background-color: rgba(0, 121, 107, 0.08) !important;
    border: 1px solid #00796B !important;
    color: #00796B !important;
}

.nav-previous .nav-btn:hover {
    background-color: rgba(0, 121, 107, 0.12) !important;
    color: #004D40 !important;
    border-color: #004D40 !important;
}

.nav-next .nav-btn {
    flex-direction: row-reverse;
    justify-content: flex-start;
    background-color: #FFB74D !important;
    color: #37474F !important;
    border: 1px solid transparent !important;
}

.nav-next .nav-btn:hover {
    background-color: #FFA726 !important;
}

.nav-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    flex-shrink: 0; /* Prevent text container from shrinking */
    /* min-width: 0; */ /* Removed to allow natural sizing */
    /* max-width: calc(100% - 35px); */ /* Removed to allow natural sizing */
}

.nav-next .nav-text {
    align-items: flex-end;
    text-align: right;
}

.nav-label {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 600;
    opacity: 0.8;
    margin-bottom: 3px;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif;
    letter-spacing: 0.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

.nav-title {
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif;
    max-width: 100%;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    /* word-wrap: break-word; */ /* May not be needed if white-space is normal */
    /* hyphens: auto; */ /* May not be needed */
    white-space: normal; /* Allow text to wrap naturally */
    position: relative;
}

/* Add a subtle fade effect for truncated text */
.nav-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 20px;
    height: 1.3em;
    background: linear-gradient(to right, transparent, currentColor);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.nav-btn:hover .nav-title::after {
    opacity: 0.1;
}

.nav-btn .material-icons {
    font-size: 18px;
    opacity: 0.9;
    flex-shrink: 0;
}

/* Tooltip styling for navigation buttons */
.nav-btn[title] {
    position: relative;
}

/* Tooltip content */
.nav-btn[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(55, 71, 79, 0.95);
    color: white;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    z-index: 1001;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.1);
    pointer-events: none;
    opacity: 0;
    animation: tooltipFadeIn 0.3s ease-out forwards;
    max-width: 280px;
    text-align: center;
    backdrop-filter: blur(4px);
}

/* Separate tooltip arrow using a different pseudo-element approach */
@media (min-width: 769px) {
    .nav-btn[title]:hover {
        overflow: visible;
    }
    
    .nav-btn[title]:hover .nav-text::after {
        content: '';
        position: absolute;
        bottom: calc(100% + 6px);
        left: 50%;
        transform: translateX(-50%);
        border-top: 6px solid rgba(55, 71, 79, 0.95);
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        z-index: 1000;
        opacity: 0;
        animation: tooltipFadeIn 0.3s ease-out forwards;
    }
}

@keyframes tooltipFadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.nav-previous {
    flex: 1;
    display: flex;
    justify-content: flex-start;
}

.nav-next {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

@media (max-width: 768px) {
    .topic-navigation {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }
    
    .nav-previous, .nav-next {
        justify-content: center;
    }
    
    .nav-btn {
        min-width: auto;
        max-width: none;
        width: 100%;
        justify-content: center;
        padding: 14px 16px;
        gap: 8px;
    }
    
    .nav-previous .nav-btn,
    .nav-next .nav-btn {
        flex-direction: row;
        justify-content: center;
    }
    
    .nav-text {
        align-items: center;
        text-align: center;
        flex: 1;
        min-width: 0;
        max-width: calc(100% - 32px); /* Account for smaller icon on mobile */
    }
    
    .nav-next .nav-text {
        align-items: center;
        text-align: center;
    }
    
    .nav-title {
        max-width: 100%;
        width: 100%;
        -webkit-line-clamp: 1;
        line-clamp: 1;
        font-size: 13px;
        line-height: 1.2;
    }
    
    .nav-label {
        font-size: 9px;
        margin-bottom: 2px;
        max-width: 100%;
        letter-spacing: 0.3px;
    }
    
    .nav-btn .material-icons {
        font-size: 16px;
    }
    
    /* Hide tooltips on mobile */
    .nav-btn[title]:hover::after,
    .nav-btn[title]:hover .nav-text::after {
        display: none !important;
        opacity: 0 !important;
    }
    
    .topic-header {
        padding: 20px;
    }
    
    .topic-header h1 {
        font-size: 1.8rem;
    }
    
    .topic-content-wrapper {
        padding: 20px;
    }
    
    .topic-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Locked topic styles for paid content */
.locked-topic {
    opacity: 0.6;
}

.topic-link.locked {
    cursor: not-allowed;
    color: #9E9E9E !important;
    background-color: #F5F5F5;
}

.topic-link.locked:hover {
    background-color: #F5F5F5 !important;
}

.topic-link.locked .topic-icon {
    color: #BDBDBD !important;
}

.topic-status-icon.locked {
    color: #FF9800 !important;
}

.premium-topic-badge {
    background: linear-gradient(135deg, #FF9800, #F57C00);
    color: #FFFFFF;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-left: auto;
}

.exercise-badge.locked {
    background: linear-gradient(135deg, #FF9800, #F57C00);
    color: #FFFFFF;
}

/* Request access section styles */
.section-request-access {
    margin: 20px 16px;
    padding: 0;
}

.request-access-card {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    border: 2px solid #2196F3;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.request-access-content {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
}

.request-access-content .material-icons {
    color: #1976D2;
    font-size: 32px;
}

.request-access-content h4 {
    color: #1976D2;
    margin: 0 0 5px 0;
    font-size: 1.1rem;
}

.request-access-content p {
    color: #1565C0;
    margin: 0;
    font-size: 0.9rem;
}

.btn-request-access {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.btn-request-access:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
    color: white;
    text-decoration: none;
}

.btn-request-access .material-icons {
    font-size: 18px;
}

/* --- Completion Badge Styles - Project Design System Aligned --- */
.completion-status {
    background: linear-gradient(135deg, #FFFDE7 0%, #FFF8E1 100%); /* Project card gradient */
    border-radius: 16px; /* Consistent with project cards */
    padding: 1.5rem;
    margin: 1.5rem 0;
    text-align: center;
    border: 1px solid #E0E0E0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); /* Project shadow pattern */
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.completion-status:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

/* Completion Badge Base Styles */
.completion-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    border-radius: 24px; /* Project button radius */
    font-weight: 600;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15); /* Enhanced shadow for badges */
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif; /* Project typography */
    font-size: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.completion-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

/* Validated completion (from exercise validation) - Teal gradient */
.completion-badge-validated {
    background: linear-gradient(135deg, #00796B, #4DB6AC); /* Project teal gradient */
    color: white;
    border: 2px solid rgba(255,255,255,0.2);
}

/* Manual completion - Orange gradient */
.completion-badge-manual {
    background: linear-gradient(135deg, #FFB74D, #FFA726); /* Project orange gradient */
    color: #37474F; /* Project dark text */
    border: 2px solid rgba(55, 71, 79, 0.1);
}

/* Automatic completion - Light blue gradient */
.completion-badge-automatic {
    background: linear-gradient(135deg, #81C784, #A5D6A7); /* Green gradient */
    color: #2E7D32; /* Dark green text */
    border: 2px solid rgba(46, 125, 50, 0.1);
}

/* Override completion (teacher/parent) - Purple gradient */
.completion-badge-override {
    background: linear-gradient(135deg, #9575CD, #B39DDB); /* Purple gradient */
    color: white;
    border: 2px solid rgba(255,255,255,0.2);
}

.completion-badge .material-icons {
    font-size: 1.25rem;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1));
}

.completion-text {
    font-weight: 600;
    letter-spacing: 0.025em;
}

.completion-score {
    background: rgba(255,255,255,0.25);
    padding: 0.25rem 0.75rem;
    border-radius: 16px; /* Rounded badge */
    font-size: 0.875rem;
    margin-left: 0.5rem;
    font-weight: 700;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

.completion-description {
    color: #546E7A; /* Project medium gray */
    font-size: 0.95rem;
    margin: 0.75rem 0;
    line-height: 1.5;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif;
}

/* Form styling */
.completion-toggle-form,
.completion-form {
    margin-top: 1rem;
}

.completion-toggle-btn,
.completion-btn {
    border-radius: 24px !important; /* Project button radius */
    padding: 0.75rem 1.5rem !important;
    font-weight: 600;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif;
    transition: all 0.2s ease;
}

.completion-toggle-btn:hover,
.completion-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 121, 107, 0.3);
}

/* Mobile Responsive Styles for Completion Elements */
@media (max-width: 768px) {
    .completion-badge {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        gap: 0.5rem;
    }
    
    .completion-badge .material-icons {
        font-size: 1.1rem;
    }
    
    .completion-score {
        font-size: 0.8rem;
        padding: 0.2rem 0.6rem;
    }
    
    .completion-toggle-btn,
    .completion-btn {
        min-width: 160px !important;
        padding: 0.6rem 1.25rem !important;
        font-size: 0.9rem;
    }
    
    .completion-description {
        font-size: 0.9rem;
    }
    
    .exercise-completion-hint {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .exercise-completion-hint .material-icons {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .completion-badge {
        padding: 0.625rem 1rem;
        font-size: 0.85rem;
    }
    
    .completion-toggle-btn,
    .completion-btn {
        min-width: 140px !important;
        padding: 0.5rem 1rem !important;
        font-size: 0.85rem;
    }
}

/* --- Enhanced Continue Learning Styles --- */
.continue-learning-section,
.course-complete-section {
    background: linear-gradient(135deg, #FFFDE7 0%, #FFF8E1 100%);
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    border: 1px solid #E0E0E0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    /* Fix overflow by ensuring proper containment */
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    min-width: 0;
}

.continue-learning-section:hover,
.course-complete-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}

.course-progress-info {
    margin-bottom: 15px;
}

.progress-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: #00796B;
    margin-bottom: 8px;
    font-size: 1rem;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif;
}

.progress-label .material-icons {
    font-size: 20px;
    color: #00796B;
}

.progress-bar-container {
    width: 100%;
    background-color: #E0E0E0;
    border-radius: 4px;
    height: 8px;
    margin-bottom: 8px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, #4CAF50, #66BB6A);
    border-radius: 4px;
    transition: width 0.8s ease;
    position: relative;
}

.progress-bar.complete {
    background: linear-gradient(135deg, #00796B, #4DB6AC);
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-stats {
    font-size: 0.9rem;
    color: #546E7A;
    font-weight: 500;
}

.continue-learning-btn {
    background: linear-gradient(135deg, #FFB74D, #FFA726) !important;
    color: #37474F !important;
    width: 100%;
    max-width: 100%;
    padding: 12px 20px !important;
    border-radius: 24px !important;
    font-weight: 600 !important;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif !important;
    box-shadow: 0 4px 12px rgba(255, 183, 77, 0.3) !important;
    transition: all 0.3s ease !important;
    text-transform: none !important;
    border: none !important;
    white-space: normal !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-height: 48px !important;
    box-sizing: border-box !important;
    cursor: pointer !important;
}

.continue-learning-btn:hover {
    background: linear-gradient(135deg, #FFA726, #FF9800) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 183, 77, 0.4) !important;
}

.continue-learning-btn .material-icons {
    margin-right: 8px;
    font-size: 18px;
    flex-shrink: 0;
}

.continue-learning-btn .mdc-button__label {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    flex-wrap: nowrap !important;
}

.course-complete-btn {
    background: linear-gradient(135deg, #4CAF50, #45a049) !important;
    color: white !important;
    width: 100%;
    padding: 12px 20px !important;
    border-radius: 24px !important;
    font-weight: 600 !important;
    font-family: 'Baloo 2', 'Quicksand', 'Nunito', sans-serif !important;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3) !important;
    transition: all 0.3s ease !important;
    text-transform: none !important;
    border: none !important;
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: unset !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-height: 48px !important;
    opacity: 0.8;
    cursor: not-allowed;
}

.course-complete-btn .material-icons {
    margin-right: 8px;
    font-size: 18px;
    flex-shrink: 0;
}

.course-complete-btn .mdc-button__label {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    overflow: visible !important;
    white-space: normal !important;
    text-align: center !important;
    line-height: 1.2 !important;
}

.course-complete-message {
    text-align: center;
    padding: 20px;
    color: #00796B;
    font-weight: 600;
    font-size: 1.1rem;
    margin-top: 10px;
}

/* Mobile Responsive Styles for Continue Learning */
@media (max-width: 768px) {
    .continue-learning-section,
    .course-complete-section {
        padding: 15px;
        margin: 10px 0;
    }
    
    .progress-label {
        font-size: 0.95rem;
    }
    
    .progress-label .material-icons {
        font-size: 18px;
    }
    
    .continue-learning-btn {
        padding: 10px 16px !important;
        font-size: 0.9rem !important;
        min-height: 44px !important;
    }
    
    .continue-learning-btn .mdc-button__label {
        font-size: 0.9rem !important;
    }
    
    .course-complete-message {
        font-size: 1rem;
        padding: 15px;
    }
    
    .progress-stats {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .continue-learning-section,
    .course-complete-section {
        padding: 12px;
    }
    
    .progress-label {
        font-size: 0.9rem;
        gap: 6px;
    }
    
    .progress-label .material-icons {
        font-size: 16px;
    }
    
    .continue-learning-btn {
        padding: 8px 14px !important;
        font-size: 0.85rem !important;
        min-height: 40px !important;
    }
    
    .continue-learning-btn .material-icons {
        font-size: 16px;
        margin-right: 6px;
    }
    
    .continue-learning-btn .mdc-button__label {
        font-size: 0.85rem !important;
    }
    
    .course-complete-message {
        font-size: 0.95rem;
        padding: 12px;
    }
}