/* Background gradient */
body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    min-height: 100vh;
    background: linear-gradient(to bottom, #a8e063, #56ab2f);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #2e7d32;
    padding: 15px 30px;
    border-radius: 0 0 12px 12px;
    color: white;
}
.navbar .logo {
    font-weight: bold;
    font-size: 20px;
}
.navbar .menu a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
}
.navbar .menu a:hover {
    text-decoration: underline;
}

/* Container */
.container {
    max-width: 700px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Card design */
.card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

/* Welcome card */
.welcome-card {
    text-align: center;
}
.welcome-card h2 {
    margin-bottom: 10px;
}

/* Leaderboard */
.leaderboard-card h3 {
    margin-bottom: 15px;
}
.leaderboard-card ol {
    padding-left: 20px;
}
.leaderboard-card li {
    margin: 5px 0;
}
.leaderboard-card li.me {
    font-weight: bold;
    color: #2e7d32;
}

/* Button */
.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 18px;
    background: #2e7d32;
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}
.btn:hover {
    background: #1b5e20;
}
.card {
    background: #fff;         /* putih */
    border-radius: 12px;      /* bucu bulat */
    box-shadow: 0 4px 8px rgba(0,0,0,0.1); /* shadow */
    padding: 20px;            /* ruang dalam */
    margin: 20px auto;        /* jarak luar */
    max-width: 600px;         /* saiz max */
}
/* Styling untuk table Leaderboard */
.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.leaderboard-table th, 
.leaderboard-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: center;
}

.leaderboard-table th {
    background-color: #4CAF50;
    color: white;
    font-weight: bold;
}