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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
    text-align: center;
}

h1 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 15px;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: #555;
    font-weight: bold;
}

input[type="text"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
}

input[type="text"]:focus {
    border-color: #007bff;
    outline: none;
}

.actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0056b3;
}

button#downloadBtn {
    background-color: #28a745;
}

button#downloadBtn:hover {
    background-color: #218838;
}

.hidden {
    display: none !important;
}

.canvas-container {
    margin-top: 30px;
    min-height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
}