/* public/explore.css */

/* MODIFIED START: Added color variables */
:root {
    --primary-color: #3498db;
    --image-color: #9b59b6;
    --prompt-color: #e67e22;
    --text-color: #2ecc71;
    /* This variable is inherited from modern-style-v2.css, but good to have as a reference */
    /* --text-secondary: #64748b; */
}
/* MODIFIED END */

.explore-main {
    padding: 4rem 0;
}

#explore-gallery {
    margin-top: 2rem;
}

.category-section {
    margin-bottom: 4rem;
}

.category-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.mindmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.mindmap-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
    /* MODIFIED START: Add top border style */
    border-top-width: 5px;
    border-top-style: solid;
    border-top-color: var(--text-secondary); /* Default color */
    /* MODIFIED END */
}

.mindmap-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.07);
}

.mindmap-card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: var(--background-color);
    border-bottom: 1px solid var(--border-color);
}

.mindmap-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.mindmap-card-tag {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-color);
    background-color: #e0f2f1; /* A light teal, adjust if needed */
    border-radius: 999px;
    margin-bottom: 0.75rem;
    align-self: flex-start;
}

.mindmap-card-content h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.mindmap-card-summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    flex-grow: 1;

    /* Truncate text to 3 lines */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;  
    overflow: hidden;
    text-overflow: ellipsis;
}

/* MODIFIED START: Add color-coded border rules */
.mindmap-card.type-pdf { border-top-color: var(--primary-color); }
.mindmap-card.type-image { border-top-color: var(--image-color); }
.mindmap-card.type-prompt { border-top-color: var(--prompt-color); }
.mindmap-card.type-text { border-top-color: var(--text-color); }
.mindmap-card.type-default, .mindmap-card.type-youtube { border-top-color: var(--text-secondary); }
/* MODIFIED END */