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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
}

.card {
    background: white;
    border-radius: 8px;
    padding: 40px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    color: #1a1a1a;
    line-height: 1.4;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
    font-size: 14px;
}

input[type="file"],
input[type="email"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
}

input[type="file"]:focus,
input[type="email"]:focus {
    outline: none;
    border-color: #4a90e2;
}

input[type="file"] {
    cursor: pointer;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background-color: #4a90e2;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: #357abd;
}

.btn-primary:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.status-message {
    margin-top: 20px;
    padding: 12px;
    background-color: #eef;
    border: 1px solid #ccf;
    border-radius: 4px;
    color: #339;
    font-size: 14px;
    font-weight: 500;
}

.error-message {
    margin-top: 20px;
    padding: 12px;
    background-color: #fee;
    border: 1px solid #fcc;
    border-radius: 4px;
    color: #c33;
    font-size: 14px;
    font-weight: 500;
}

.success-message {
    margin-top: 20px;
    padding: 20px;
    background-color: #efe;
    border: 1px solid #cfc;
    border-radius: 4px;
    color: #3c3;
}

.success-message h2 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #2a7;
}

.success-message p {
    margin-bottom: 8px;
    color: #2a7;
}

.success-message strong {
    font-family: monospace;
    font-weight: 600;
}

@media (max-width: 640px) {
    .card {
        padding: 24px;
    }
    
    h1 {
        font-size: 20px;
    }
}