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

body {
    font-family: Arial, sans-serif;
    background-color: #f4f6f8;
    padding-bottom: 30px;
}

.header {
    background-color: #2c3e50;
    color: white;
    padding: 30px 20px;
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 28px;
    margin-bottom: 5px;
}

.header p {
    font-size: 14px;
    color: #bdc3c7;
}

#loading {
    text-align: center;
    font-size: 18px;
    color: #2c3e50;
    padding: 20px;
}

#error {
    text-align: center;
    color: #c0392b;
    font-size: 18px;
    padding: 15px;
    background-color: #fdecea;
    border-radius: 6px;
    margin: 10px auto;
    max-width: 400px;
}

#container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

.card {
    background-color: white;
    border-radius: 8px;
    width: 280px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.card-top {
    background-color: #3498db;
    height: 50px;
}

.avatar {
    width: 70px;
    height: 70px;
    background-color: #2c3e50;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: bold;
    margin: -35px auto 10px auto;
    border: 3px solid white;
}

.card-body {
    padding: 10px 20px 20px 20px;
    text-align: center;
}

.card-body h2 {
    color: #2c3e50;
    font-size: 18px;
    margin-bottom: 4px;
}

.username {
    color: #7f8c8d;
    font-size: 13px;
    margin-bottom: 15px;
}

.card-body p {
    font-size: 13px;
    color: #34495e;
    margin: 6px 0;
    text-align: left;
}

.card-body p b {
    color: #3498db;
}