body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f6f8fa;
    color: #24292e;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding: 40px 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    background-color: #fff;
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(27, 31, 35, 0.1);
}

h1 {
    text-align: center;
    color: #0366d6;
}

.search-box {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

#username-input {
    width: 60%;
    padding: 10px;
    border: 1px solid #d1d5da;
    border-radius: 6px;
    font-size: 16px;
}

#search-button {
    padding: 10px 15px;
    margin-left: 10px;
    background-color: #2ea44f;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
}

#search-button:hover {
    background-color: #22863a;
}

#profile-container {
    border-top: 1px solid #e1e4e8;
    padding-top: 30px;
}

.profile-card {
    display: flex;
    align-items: center;
    gap: 20px;
}

.profile-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
}

.profile-info h2 {
    margin: 0 0 5px;
}

.profile-info p {
    margin: 0 0 10px;
    color: #586069;
}

.repo-list {
    margin-top: 30px;
}

.repo-item {
    margin-bottom: 10px;
    padding: 15px;
    border: 1px solid #d1d5da;
    border-radius: 6px;
}

.repo-item a {
    font-weight: bold;
    color: #0366d6;
    text-decoration: none;
}