body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f7f9;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
}

.container {
    background-color: #ffffff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 10px;
}

.description {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #dcdfe6;
    border-radius: 6px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input[type="text"]:focus {
    border-color: #4a90e2;
    outline: none;
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

button {
    width: 100%;
    padding: 12px;
    background-color: #4a90e2;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.1s;
}

button:hover {
    background-color: #357abd;
}

button:active {
    transform: scale(0.98);
}

.message {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 6px;
    text-align: center;
}

.message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #a5d6a7;
}

.message.error {
    background-color: #ffebee;
    color: #c62828;
    border: 1px solid #ef9a9a;
}

.generated-link-container {
    margin-top: 20px;
    text-align: center;
}

.generated-link-container p {
    margin-bottom: 10px;
    font-weight: 600;
}

.generated-link-container input {
    text-align: center;
    background-color: #f8f9fa;
    color: #333;
    font-size: 14px;
    margin-bottom: 15px;
}

.generated-link-container button {
    width: auto;
    padding: 10px 20px;
    background-color: #28a745;
}

.generated-link-container button:hover {
    background-color: #218838;
}

.button-new {
    display: block;
    width: calc(100% - 40px);
    margin: 20px auto 0;
    padding: 12px 20px;
    text-align: center;
    background-color: #6c757d;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s;
}

.button-new:hover {
    background-color: #5a6268;
}