body {
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', sans-serif;
    background: #0f0f0f;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.donate-card {
    background: #1a1a1a;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid #333;
}

.header h1 {
    margin: 0;
    font-size: 24px;
    color: #007bff;
    letter-spacing: 2px;
}

.header p {
    color: #888;
    font-size: 14px;
    margin-top: 5px;
}

.donate-form {
    margin-top: 30px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    font-size: 12px;
    color: #aaa;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.input-group input {
    width: 100%;
    padding: 12px;
    background: #252525;
    border: 1px solid #333;
    border-radius: 8px;
    color: #fff;
    font-size: 16px;
    box-sizing: border-box;
    transition: 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #007bff;
}

.info {
    margin: 20px 0;
    font-size: 14px;
    color: #ccc;
}

#res-coins {
    color: #007bff;
    font-weight: bold;
}

.btn-pay {
    width: 100%;
    padding: 15px;
    background: linear-gradient(45deg, #007bff, #0056b3);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.btn-pay:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.4);
}

.footer-links {
    margin-top: 20px;
}

.footer-links a {
    color: #555;
    text-decoration: none;
    font-size: 12px;
}

.footer-links a:hover {
    color: #888;
}