body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #212529;
}

header {
    background-color: #343a40;
    color: #ffffff;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#announcement-board {
    margin: 1rem 0;
    color: #ffc107;
    font-size: 1.2rem;
}

#search-bar {
    padding: 0.5rem;
    width: 80%;
    max-width: 600px;
    margin: 1rem auto;
    display: block;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 1rem;
}

main {
    padding: 2rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    margin-bottom: 2rem;
}

.section h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: #343a40;
}

.section .items {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.item {
    position: relative;
    display: flex;
    align-items: center;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    flex: 1 1 calc(33.333% - 1rem);
    box-sizing: border-box;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
}

.item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.item-logo {
    width: 50px;
    height: 50px;
    margin-right: 1rem;
    border-radius: 50%;
    object-fit: cover;
}

.item-name {
    font-weight: bold;
    font-size: 1.2rem;
}

.item-description {
    color: #6c757d;
    margin-top: 0.5rem;
}

#no-results-message {
    text-align: center;
    font-size: 1.2rem;
    color: #dc3545;
    margin-top: 2rem;
}

.popular-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: #ff4757;
    color: #fff;
    padding: 0.2rem 0.5rem;
    font-size: 0.8rem;
    font-weight: bold;
    border-radius: 0 8px 0 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .item {
        flex: 1 1 calc(50% - 1rem);
    }
}

@media (max-width: 480px) {
    .item {
        flex: 1 1 100%;
    }
}