body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background: white;
    padding: 60px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
    font-size: 3em;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    margin: 10px;
    text-decoration: none;
    color: white;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.btn-signup {
    background-color: #28a745; /* Green */
}
.btn-signup:hover { background-color: #218838; }

.btn-login {
    background-color: #007bff; /* Blue */
}
.btn-login:hover { background-color: #0069d9; }
/* --- Header Styles --- */
.main-header {
    background-color: #333; /* Dark Grey Background */
    color: white;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between; /* Pushes Left/Right apart */
    align-items: center;
    position: fixed; /* Sticks to top */
    top: 0;
    left: 0;
    width: 100%;
    box-sizing: border-box; /* Includes padding in width */
    z-index: 1000;
}

/* Links in Header */
.main-header a {
    color: white;
    text-decoration: none;
    margin-right: 15px;
    font-weight: bold;
}

.main-header a:hover {
    color: #ddd;
}

.header-right {
    display: flex;
    align-items: center;
}

/* Currency Stats */
.user-stat {
    margin-right: 15px;
    font-size: 0.9em;
}

.coin-stat { color: #ffd700; } /* Gold color */
.diamond-stat { color: #00bfff; } /* Cyan color */

.btn-logout {
    background-color: #dc3545;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.9em;
}
.btn-logout:hover { background-color: #c82333; }

/* Push content down so it isn't hidden behind the fixed header */
body {
    padding-top: 60px; 
}