/*
  Main Component Wrapper: .exercise-card
*/
.exercise-card {
    background: var(--edtt-color-bg-default);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--edtt-color-bg-default);
    border: 1px solid var(--edtt-color-border-default);
    overflow: hidden;
    transition: all 0.3s ease;
    text-align: left;
}

.exercise-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--edtt-color-bg-default);
}

.exercise-card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/*
  Header & Thumbnail Section
*/
.exercise-card-header {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, #8BC34A 0%, #689F38 100%);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

/* Main thumbnail image */
.exercise-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.exercise-card-header:hover .exercise-thumbnail {
    transform: scale(1.05);
}

/*
  Placeholder Thumbnail Styles (Checklist Design)
*/
.exercise-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #8BC34A 0%, #689F38 100%);
    transition: transform 0.3s ease;
}

.exercise-card-header:hover .exercise-thumbnail-placeholder {
    transform: scale(1.02);
}

.checklist-container {
    position: relative;
    width: 180px;
    height: 140px;
}

.paper-bg {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 0;
    background: var(--edtt-color-bg-default);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--edtt-color-bg-default);
    transform: rotate(-2deg);
}

.paper-header {
    position: absolute;
    top: 25px;
    left: 30px;
    right: 30px;
    z-index: 2;
    text-align: center;
    transform: rotate(-2deg);
}

.paper-subject {
    display: block;
    color: #e91e63;
    font-size: var(--edtt-font-size-sm);
    font-weight: 500;
    margin-bottom: 2px;
}

.paper-grade {
    display: block;
    color: #374151;
    font-size: var(--edtt-font-size-xs);
    font-weight: 500;
}

.checklist-items {
    position: absolute;
    top: 60px;
    left: 40px;
    z-index: 2;
    transform: rotate(-2deg);
}

.checklist-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

.check-circle {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #ef4444;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    flex-shrink: 0;
}

.check-circle i {
    color: var(--edtt-color-text-default);
    font-size: var(--edtt-font-size-xs);
}

.check-line {
    height: 2px;
    width: 60px;
    background: #8B4513;
    border-radius: 1px;
}

/* Hand with Pencil animation */
.hand-pencil {
    position: absolute;
    bottom: 10px;
    right: 20px;
    z-index: 3;
}

.hand {
    width: 35px;
    height: 25px;
    background: #FDBCB4;
    border-radius: 15px 15px 10px 10px;
    position: relative;
    transform: rotate(25deg);
}

.hand::before {
    content: '';
    position: absolute;
    top: -5px;
    right: 5px;
    width: 8px;
    height: 12px;
    background: #FDBCB4;
    border-radius: 4px;
    transform: rotate(-20deg);
}

.pencil {
    position: absolute;
    top: -15px;
    right: 8px;
    width: 4px;
    height: 30px;
    background: linear-gradient(to bottom, #ff6b35 0%, #ff6b35 40%, #f4a261 40%, #f4a261 60%, #2a9d8f 60%);
    border-radius: 2px;
    transform: rotate(25deg);
}

.pencil::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 2px solid transparent;
    border-right: 2px solid transparent;
    border-bottom: 3px solid #8B4513;
}

/*
  Overlays: Play Button & Tags
*/
.play-button-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.exercise-card-header:hover .play-button-overlay {
    opacity: 1;
}

.play-button-overlay .icon {
    font-size: 47px;
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
    transform: scale(0.8);
}

.exercise-card-header:hover .play-button-overlay .icon {
    transform: scale(1);
}

.play-button-overlay:hover .icon {
    transform: scale(1.1);
}

/* Tags Overlay */
.test-item-tags {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 11;
    display: flex;
    gap: 8px;
}

.tag-grade {
    background-color: var(--edtt-color-gray-100);
    color: var(--edtt-color-gray-600);
}

/*
  Card Body & Content
*/
.exercise-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0; /* Prevent overflow */
}

.exercise-title {
    font-size: var(--edtt-font-size-lg);
    font-weight: 500;
    color: var(--edtt-color-text-default);
    margin-bottom: 6px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-word;
    min-height: calc(1.3em * 2); /* Ensure minimum height for 2 lines */
}

.exam-type-label {
    color: var(--edtt-color-text-default);
    font-size: var(--edtt-font-size-xs);
    font-weight: 500;
    margin-bottom: 16px;
    font-style: italic;
}

/* Stats Grid */
.exercise-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 0;
    width: 100%;
    overflow: hidden; /* Prevent overflow */
}

.exercise-stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0; /* Prevent flex item overflow */
    flex: 1 1 calc(50% - 5px); /* Take up roughly half width with gap consideration */
    min-width: 140px; /* Increased minimum width to accommodate full text */
}

.exercise-stat-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.exercise-stat-icon i {
    font-size: var(--edtt-font-size-xs);
}

.exercise-stat-content {
    display: flex;
    line-height: 1.2;
    min-width: 0; /* Allow text to shrink */
    flex: 1;
    overflow: hidden; /* Prevent content overflow */
}

.exercise-stat-number {
    font-size: var(--edtt-font-size-sm);
    font-weight: 500;
    color: var(--edtt-color-text-primary);
    margin-right: 4px;
    white-space: nowrap; /* Prevent number from wrapping */
}

.exercise-stat-label {
    font-size: var(--edtt-font-size-xs);
    color: var(--edtt-color-text-default);
    font-weight: 500;
    white-space: nowrap; /* Prevent label from wrapping */
}


/*
  Alternative/Separate Thumbnail Styles (Legacy/Duplicate?)
  These seem separate from the main .exercise-card structure.
*/
.exam-thumbnail {
    width: 100%;
    height: 160px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: #f8f9fa;
    margin-bottom: 16px;
}

.exam-thumbnail-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.exercise-card:hover .exam-thumbnail-img {
    transform: scale(1.02);
}

.exam-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
            var(--edtt-color-primary-50),
            var(--edtt-color-primary-100));
    position: relative;
    border: 2px solid var(--edtt-color-primary-200);
    border-radius: 12px;
    overflow: hidden;
}

.placeholder-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    text-align: center;
}

.exam-icon {
    font-size: 32px;
    color: var(--edtt-color-primary-400);
    margin-bottom: 8px;
    opacity: 0.8;
}

.exam-title-preview {
    font-size: 13px;
    font-weight: 500;
    color: var(--edtt-color-primary-700);
    line-height: 1.3;
    margin-bottom: 8px;
    word-break: break-word;
}

.exam-meta-preview {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}

.meta-subject,
.meta-grade {
    font-size: 10px;
    padding: 2px 6px;
    background: var(--edtt-color-white);
    border-radius: 8px;
    color: var(--edtt-color-primary-600);
    border: 1px solid var(--edtt-color-primary-300);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}


/*
  Responsive Design
*/
@media (max-width: 768px) {
    .exercise-card {
        max-width: 100%;
        margin: 0;
    }

    .exercise-card-header {
        height: 160px;
    }

    .checklist-container {
        width: 140px;
        height: 110px;
    }

    .exercise-card-body {
        padding: 16px;
    }

    .exercise-stats {
        gap: 8px;
        width: 100%;
    }

    .exercise-stat-icon {
        width: 32px;
        height: 32px;
    }

    .exam-thumbnail {
        border-radius: 12px;
    }

    .exam-title-preview {
        font-size: 12px;
    }

    .exam-icon {
        font-size: 28px;
    }
}

/* Very small cards - single column stats */
@media (max-width: 480px) {
    .exercise-stats {
        gap: 6px;
    }
    
    .exercise-stat-item {
        flex: 1 1 100%; /* Full width on very small screens */
        gap: 4px;
        min-width: 100px; /* Smaller minimum width */
    }
    
    .exercise-stat-icon {
        width: 20px;
        height: 20px;
    }
}

/* Large font size theme adjustments */
[data-font-size='large'] .exercise-stats {
    gap: 12px;
}

[data-font-size='large'] .exercise-stat-item {
    gap: 8px;
    flex: 1 1 calc(50% - 6px); /* Adjust for larger gap */
    min-width: 160px; /* Larger minimum width for large font to show full text */
}

[data-font-size='large'] .exercise-stat-icon {
    width: 28px;
    height: 28px;
}

[data-font-size='large'] .exercise-stat-content {
    gap: 6px;
}

[data-font-size='large'] .exercise-stat-number {
    margin-right: 6px;
}

/* Responsive adjustments for large font size */
@media (max-width: 768px) {
    [data-font-size='large'] .exercise-stats {
        gap: 10px;
    }
    
    [data-font-size='large'] .exercise-stat-item {
        gap: 6px;
        flex: 1 1 calc(50% - 5px); /* Keep 2 columns but with smaller gap */
        min-width: 130px; /* Increased minimum width to show full text */
    }
    
    [data-font-size='large'] .exercise-stat-icon {
        width: 24px;
        height: 24px;
    }
    
    [data-font-size='large'] .exercise-stat-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    [data-font-size='large'] .exercise-stat-number {
        margin-right: 0;
    }
}

@media (max-width: 480px) {
    [data-font-size='large'] .exercise-stats {
        gap: 8px;
    }
    
    [data-font-size='large'] .exercise-stat-item {
        gap: 4px;
        flex: 1 1 100%; /* Full width on mobile with large font */
        min-width: 100px; /* Smaller minimum width */
    }
    
    [data-font-size='large'] .exercise-stat-icon {
        width: 20px;
        height: 20px;
    }
    
    [data-font-size='large'] .exercise-stat-content {
        flex-direction: row;
        align-items: center;
        gap: 4px;
    }
    
    [data-font-size='large'] .exercise-stat-number {
        margin-right: 4px;
    }
}

/* Medium screens with large font - force single column earlier */
@media (max-width: 700px) {
    [data-font-size='large'] .exercise-stat-item {
        flex: 1 1 100%; /* Force single column on medium screens with large font */
        min-width: 120px;
    }
}

@media (min-width: 1200px) {
    /* Alternative thumbnail responsive */
    .exam-thumbnail {
        height: 180px;
    }
}