* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
    color: #333;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 20px;
    padding: 40px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}

h1 {
    font-size: 2em;
    color: #2c3e50;
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    margin-bottom: 30px;
}

.bid-section {
    margin-top: 30px;
}

h2 {
    font-size: 1.5em;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    width: 100%;
}

input:focus {
    outline: none;
    border-color: #3498db;
}

button {
    padding: 12px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #2980b9;
}

.confirmation-message {
    background-color: #dff0d8;
    border: 1px solid #d6e9c6;
    color: #3c763d;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
    text-align: center;
}

.confirmation-message h3 {
    margin-top: 0;
    color: #3c763d;
}

.error-message {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
    text-align: center;
}

.error-message h3 {
    margin-top: 0;
    color: #721c24;
}

@media (max-width: 480px) {
    .container {
        margin: 10px;
        padding: 20px;
    }
}