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

a {
    color: rgb(0, 30, 255);
    text-decoration: none;
}

h1 {
    text-align: center;
}

header {
    width: 100%;
    height: 100px;
    padding: 0 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav {
    display: flex;
    gap: 30px;
}

main {
    padding-top: 50px;
}

main,
form {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 10px;
}

input {
    padding: 10px;
}

.btn {
    padding: 15px 40px;
    border-radius: 2px;
    transition: 0.1s;
    font-weight: bold;
    color: rgb(255, 255, 255);
}

.red {
    border: 2px solid rgb(128, 0, 0);
    background: rgb(255, 0, 0);
}

#banner {
    font-size: 50px;
}

.leaderboard {
    width: min(800px, 90%);
    margin: 30px auto;
}

.leaderboard-header,
.leaderboard-row {
    display: grid;
    grid-template-columns: 100px 1fr 120px;
    align-items: center;
    gap: 15px;
}

.leaderboard-header {
    padding: 12px 20px;
    font-weight: bold;
    border-bottom: 2px solid #ccc;
}

.leaderboard-row {
    padding: 15px 20px;
    margin-top: 5px;
    background: #f5f5f5;
    border-radius: 8px;
}

.rank {
    font-weight: bold;
}

.username {
    font-weight: 500;
}

.username span {
    font-size: 0.85em;
    opacity: 0.7;
}

.score {
    text-align: right;
    font-weight: bold;
}

.current-user {
    border: 2px solid #333;
    background: #e9e9e9;
}

.your-ranking {
    margin-top: 40px;
}

.your-ranking-title {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.login-message {
    text-align: center;
    margin-top: 30px;
}