.container {
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}

.search-box {
    margin: 1.2rem 0;
    position: relative;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.search-box input {
    width: 100%;
    padding: 0.8rem 0.8rem 0.8rem 2.5rem;
    border: 2px solid #e2e8f0;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    background-color: white;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-box i {
    position: absolute;
    left: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    color: #a0aec0;
    font-size: 1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.2rem;
    padding: 0.5rem;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 1.2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid #e2e8f0;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.card-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    color: white;
}

.card-icon i {
    font-size: 1.8rem;
}

.card-content {
    width: 100%;
}

.card-content h3 {
    color: #2d3748;
    margin-bottom: 0.4rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.card-content p {
    color: #718096;
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: 0.8rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    justify-content: center;
}

.tag {
    background: #edf2f7;
    color: #4a5568;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 1rem;
    }
    
    .navbar {
        padding: 0.6rem 1rem;
    }
    
    .nav-brand {
        font-size: 1rem;
    }

    .card {
        padding: 1rem;
    }
    
    .card-icon {
        width: 45px;
        height: 45px;
    }
    
    .card-icon i {
        font-size: 1.6rem;
    }
}