body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #f9f9f9;
    color: #333;
}

header {
    background: #111;
    color: white;
    padding: 15px;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
    font-weight: 500;
}

.container {
    padding: 30px;
    text-align: center;
}

.btn {
    background: #ff6600;
    padding: 10px 20px;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    display: inline-block;
    margin-top: 15px;
}

form input[type="text"],
form input[type="email"],
form input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    box-sizing: border-box;
}

form button.btn {
    width: auto;
    padding: 12px;
    font-size: 16px;
    background-color: #ff6600;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

form button.btn:hover {
    background-color: #e65c00;
}

.container p {
    margin-top: 15px;
    font-size: 14px;
}
.mining-box {
    margin-top: 40px;
    text-align: center;
}

.mine-btn {
    background: #28a745;
    color: white;
    padding: 12px 25px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: 0.3s;
}

.mine-btn:hover {
    background: #218838;
}

.mine-btn.disabled {
    background: #ccc;
    cursor: not-allowed;
}