/* /static/css/library-redesign.css */

:root {
    --background-color: #f9fafb;
    --card-background-color: #ffffff;
    --border-color: #e5e7eb;
    --primary-text-color: #111827;
    --secondary-text-color: #6b7280;
    --accent-color: #6366f1;
    --accent-color-hover: #4f46e5;
    --star-color: #f59e0b;
}

body {
    background-color: var(--background-color);
    color: var(--primary-text-color);
}

.library-wrapper {
    padding: 1rem 0;
}

.library-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.library-header {
    text-align: center;
    padding: 2rem 0;
}

.library-header h1 {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-text-color);
}

.library-header p {
    font-size: 1.125rem;
    color: var(--secondary-text-color);
    margin-top: 0.5rem;
}

/* Filters Section */
.filters-section {
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.search-wrapper {
    position: relative;
    max-width: 600px; /* Limit search bar width */
    margin: 0 auto; /* Center search bar */
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background-color: var(--card-background-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--primary-text-color);
    font-size: 1rem;
}

.search-input::placeholder {
    color: var(--secondary-text-color);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-text-color);
}

/* Lecture Grid */
.lecture-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

/* Lecture Card */
.lecture-card {
    background-color: var(--card-background-color);
    border-radius: 0.5rem;
    overflow: hidden;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
}

.lecture-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

.card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: #e5e7eb;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--primary-text-color);
}

.card-lecturer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-text-color);
}

.lecturer-avatar-mini {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    color: var(--secondary-text-color);
    font-size: 0.875rem;
    margin-top: auto; /* Pushes meta to the bottom */
    padding-top: 1rem;
}

.card-meta .rating .fa-star {
    color: var(--star-color);
}

/* Empty State & Results Counter */
.empty-state, .results-counter {
    text-align: center;
    padding: 2rem 1rem;
}

.empty-state {
    background-color: var(--card-background-color);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

/* --- Lecturer Page Specific Styles --- */

.lecturer-hero {
    padding: 3rem 0;
    background-color: var(--card-background-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 3rem;
}

.lecturer-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.lecturer-hero-avatar {
    width: 128px;
    height: 128px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.lecturer-hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lecturer-hero-info h1 {
    font-size: 2.25rem;
    font-weight: bold;
}

.lecturer-bio {
    margin-top: 1rem;
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--secondary-text-color);
    max-width: 65ch;
}

.lecturer-website-link {
    display: inline-block;
    margin-top: 1.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.lecturer-website-link:hover {
    color: var(--accent-color-hover);
}

.lecture-feed {
    display: flex;
    flex-direction: column;
    gap: 3rem; /* Increased gap */
    max-width: 960px; /* Increased width */
    margin: 0 auto;
}

.feed-item {
    background-color: var(--card-background-color);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
    text-decoration: none;
    color: var(--primary-text-color);
    transition: box-shadow 0.2s;
}

.feed-item:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

.feed-item-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: #e5e7eb;
}

.feed-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feed-item-content {
    padding: 1.5rem;
}

.feed-item-meta {
    font-size: 0.875rem;
    color: var(--secondary-text-color);
    margin-bottom: 0.5rem;
}

.feed-item-meta .rating {
    margin-left: 1rem;
}

.feed-item-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feed-item-description {
    color: var(--secondary-text-color);
    margin-bottom: 1rem;
}

.feed-item-action {
    font-weight: 500;
    color: var(--accent-color);
}


/* --- Media Queries for Responsive Design --- */

@media (min-width: 768px) {
    .lecturer-hero-content {
        flex-direction: row;
        text-align: left;
        gap: 3rem;
    }
}

/* Tablet */
@media (min-width: 640px) {
    .lecture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .lecture-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .lecture-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}