body {
    font-family: Arial, sans-serif;
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem;
    background-color: #f0f0f0;
}
h1 {
    font-family: 'Arial Black', Gadget, sans-serif;
    color: gold;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.7);
    text-align: center;
}
h2 {
    text-align: center;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 5px;
    margin-bottom: 20px;
}
.block {
    background-color: #ddd;
    border: 1px solid #999;
    padding: 15px 0;
    text-align: center;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s;
}
.block:hover {
    background-color: #bbb;
}
.block.sold {
    background-color: #4caf50;
    color: white;
    cursor: pointer;
    text-decoration: none;
}
.payment-form {
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 0 5px #ccc;
    max-width: 400px;
    margin: 0 auto 40px auto;
}
.payment-form label {
    display: block;
    margin-bottom: 10px;
}
.payment-form input[type="text"],
.payment-form input[type="email"],
.payment-form input[type="url"],
.payment-form input[type="password"],
.payment-form input[type="file"] {
    width: 100%;
    padding: 6px;
    box-sizing: border-box;
}
.payment-form button {
    background-color: #4caf50;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 1rem;
    border-radius: 4px;
}
.payment-form button:hover {
    background-color: #45a049;
}
.message {
    text-align: center;
    color: red;
    font-weight: bold;
}
footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    color: #666;
}
table {
    margin: 20px auto;
    border-collapse: collapse;
    width: 90%;
}
th, td {
    padding: 8px 12px;
    border: 1px solid #999;
    text-align: left;
}
img.pixel-img {
    max-width: 50px;
    max-height: 50px;
    border-radius: 4px;
}
.logout-btn {
    margin-bottom: 15px;
    padding: 8px 12px;
    background-color: #d9534f;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
.logout-btn:hover {
    background-color: #c9302c;
}