/*CSS file for all of the courses page

Colours:
Background: #F0F2F5
*/

:root { /* Ensure these variables are defined if not already in top_content.css or globally */
    --navbar-background: #3A2E39;
    --text-color: #333333;
    --card-background: #FFFFFF;
}

/* General page container for content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    overflow: hidden;
}

.page-title {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 40px;
    text-align: left;
}

.page-subtitle {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--text-color);
    margin-top: 30;
    margin-bottom: 30px;
    text-align: left;
}

/* Grid container for content cards/items */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    align-items: stretch;
    width: 100%;
}

/* Collapse to a single column on small screens */
@media (max-width: 700px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* Each card describing a course */
article.info-card {
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 20px;
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    box-sizing: border-box;
    position: relative;
}

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

article.info-card h3 { /* Title within the card */
    font-size: 1.4em;
    font-weight: bold;
    color: var(--text-color);
    margin-top: 0;
    margin-bottom: 10px;
}

article.info-card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

article.info-card .tag {
    padding: 5px 10px;
    border-radius: 4px;
    color: white;
    font-weight: bold;
    font-size: 0.85em;
    line-height: 1;
}

/* Course information tag colors */
.tag.grade-tag-8 { background-color: #A6E1FA; color: #333; }
.tag.grade-tag-9 { background-color: #007bff; }
.tag.grade-tag-10 { background-color: #28a745; }
.tag.grade-tag-11 { background-color: #ffc107; color: #333; }
.tag.grade-tag-12 { background-color: #fd7e14; }

.tag.type-tag-elective { background-color: #dc3545; }
.tag.type-tag-required { background-color: #6f42c1; }
.tag.credits-tag { background-color: #17a2b8; }
.tag.info-tag { background-color: #6c757d; } /* Generic info tag */

/* Description paragraph */
.info-card p:not(.item-identifier), .description {
    font-size: 0.95em;
    line-height: 1.5;
    color: #555555;
    margin: .35em 0;
}

/* Styling for lists within description for better readability */
article.info-card ul,
article.info-card ol {
    padding-left: 20px;
    margin-top: 5px;
    margin-bottom: 10px;
}

article.info-card li {
    margin-bottom: 5px;
}


/* Course code goes bottom on content card */
article.info-card .item-identifier { /* For course codes, etc. */
    font-size: 0.8em;
    color: #737373;
    padding-top: 10px;
    border-top: 1px solid #eee;
    margin-top: auto;
}

article.info-card .action-link,
article.info-card .details-button {
    display: inline-block;
    margin-top: 15px;
    padding: 8px 15px;
    background-color: var(--navbar-background);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    text-align: center;
    transition: background-color 0.2s;
    align-self: flex-start; /* Aligns button to the start of the cross axis if card is flex column */
}

article.info-card .action-link:hover,
article.info-card .details-button:hover {
    background-color: #503c4d; /* Darker shade of navbar-background */
}

/* Container for pairing media like video and image, and centering them */
.media-pair-container {
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Changed from center to start for better alignment with text */
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
}

/*For embedded youtube videos*/
.responsive-iframe-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    /* Maxwidth should not be needed */
    /* max-width: 1200px;
    margin-left: auto;  */
    margin-right: auto;
    margin-bottom: 20px;
}

.responsive-iframe-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 4px;
}

/* Styling for images within media-pair or standalone in cards */
article.info-card img,
.media-pair-container img,
.content-section img { /* General image styling within these contexts */
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid #ddd; /* Optional subtle border */
    display: block; /* Removes extra space below image if it's inline */
    margin-top: 10px;
    margin-bottom: 10px;
}

.media-pair-container img {
    max-width: 400px; /* Specific max-width if paired, adjust as needed */
    width: 100%;
}




/* General text content styling, for sections outside cards or for general info */
.content-section {
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.content-section h2 { /* Sub-headings within a content section */
    font-size: 1.6em;
    color: var(--text-color);
    margin-top: 0;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--page-background);
    padding-bottom: 10px;
}

.content-section p,
.content-section ul,
.content-section ol {
    font-size: 1em;
    line-height: 1.7;
    color: #444444;
    margin-bottom: 15px;
}

.content-section ul,
.content-section ol {
    padding-left: 25px;
}

.content-section li {
    margin-bottom: 8px;
}

/* Standalone button style (if needed outside cards) */
.buttonC {
    border-style: solid;
    text-align: center;
    font-weight: bold;
    padding: 12px 20px;
    margin: 10px 5px;
    cursor: pointer;
    outline: none;
    color: #FFFFFF;
    border-color: var(--navbar-background);
    font-size: 1em;
    border-radius: 5px;
    background-color: var(--navbar-background);
    transition: background-color 0.3s, color 0.3s;
}

.buttonC:hover {
    background-color: #503c4d;
    color: #fff;
}

.buttonC:active {
    background-color: #2c1e2a;
    transform: translateY(1px);
}

/* Add this new section for the navigation buttons */
.content-section nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.content-section nav .details-button {
    display: inline-block;
    padding: 8px 16px;
    background-color: #562774; /* Changed to match navbar background */
    color: var(--nav-link-color);
    text-decoration: none;
    border-radius: 6px;
    font-size: 1em;
    transition: background-color 0.2s ease-in-out;
    border: none;
    text-align: center;
    min-width: 120px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.content-section nav .details-button:hover {
    background-color: #6b2682; /* Darker shade of the vibrant purple */
    transform: translateY(-1px);
}

.content-section nav .details-button:active {
    transform: translateY(0);
}

/* Make cards in same row share height */
.card-grid::after {
    content: '';
    flex: auto;
}