:root {
    --primary-color: #4285f4;
    --secondary-color: hsl(275, 76%, 82%);
    --text-color: #333;
    --bg-color: #f9f9f9;
    --card-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 1rem;
}

.survey-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

.progress-bar {
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    margin: 1rem 0;
    overflow: hidden;
}

.progress-bar div {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.question-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    margin-bottom: 1rem;
}

.navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
}

.button-options button {
    padding: 0.75rem;
    background: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    text-align: center;
    margin-top: 1rem;
    width: 100%;
}

button.action {
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.2s;
}

button:hover {
    opacity: 0.9;
}

.button-options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0;
}

.button-options button.selected {
    background: var(--primary-color);
    color: white;
}

.text-input textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin: 1rem 0;
    font-family: 'Roboto', sans-serif;
    resize: vertical;
}

.other-input textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin: 1rem 0;
    font-family: 'Roboto', sans-serif;
    resize: vertical;
}

.introduction, .thank-you {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    text-align: center;
    margin-bottom: 1rem;
}

.introduction h2, .thank-you h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.introduction p, .thank-you p {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.introduction button, .thank-you button {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: opacity 0.2s;
}

.introduction button:hover, .thank-you button:hover {
    opacity: 0.9;
}

@media (min-width: 768px) {
    body {
        padding: 2rem;
    }
    
    .question-card {
        padding: 2rem;
    }
    
    .introduction, .thank-you {
        padding: 2.5rem;
    }
    
    .introduction p, .thank-you p {
        font-size: 1.1rem;
    }
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
}

.footer-logo {
    margin: 0 1rem;
}