* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #007bff;
    color: white;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.card {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.card-header {
    background-color: #f9f9f9;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid #eee;
}

.card-header img {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 3px solid #007bff;
}

.card-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.card-body {
    padding: 1rem;
    flex-grow: 1;
}

.card-body p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    color: #555;
}

.card-body p strong {
    font-weight: 600;
    color: #333;
}

.card-footer {
    background-color: #f9f9f9;
    padding: 1rem;
    font-size: 0.8rem;
    color: #666;
    border-top: 1px solid #eee;
    text-align: center;
}

.loader {
    border: 6px solid #f3f3f3;
    border-top: 6px solid #007bff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -25px;
    margin-top: -25px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-message {
    text-align: center;
    color: #d9534f;
    font-size: 1.2rem;
    padding: 2rem;
    display: none;
}