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

body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 10px;
}

header h1 {
    font-size: 2rem;
    color: #f21818;
    margin-bottom: 5px;
}

header p {
    color: #666;
    font-size: 0.9rem;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

form {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 15px;
}

input:focus {
    outline: none;
    border-color: #f21818;
}

button {
    width: 100%;
    padding: 12px;
    background: #f21818;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #df0909;
}

button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

#result {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

#result.success {
    border-left: 4px solid #f21818;
}

#result.error {
    border-left: 4px solid #df0909;
}

#downloadLink {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    background: #f21818;
    color: white;
    text-decoration: none;
    border-radius: 6px;
}

#downloadLink:hover {
    background: #df0909;
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
}