:root {
    --primary-color: #0056b3;
    --secondary-color: #e3f2fd;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: 1rem 0;
}

.container {
    width: 90%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 15px;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
}

main {
    flex: 1;
    padding: 2rem 0;
}

/* Progress Bar */
.progress-container {
    background-color: #e0e0e0;
    border-radius: 10px;
    height: 10px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-bar {
    background-color: var(--primary-color);
    height: 100%;
    width: 0%;
    transition: width 0.5s ease-in-out;
}

/* Question Card */
.question-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 2rem;
}

.question-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.question-content {
    margin-bottom: 2rem;
    font-size: 1rem;
    color: #555;
}

.options-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-label {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 2px solid #eee;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.option-label:hover {
    border-color: var(--primary-color);
    background-color: var(--secondary-color);
}

.option-label input {
    margin-right: 10px;
}

/* Buttons */
.nav-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    text-decoration: none;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #004494;
}

.btn-secondary {
    background-color: #6c757d;
    color: var(--white);
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--white);
}

.copyright {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #34495e;
    font-size: 0.9rem;
}

/* Cookie Banner */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    padding: 1.5rem;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: none; /* Hidden by default */
    z-index: 1000;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

@media (min-width: 768px) {
    #cookie-banner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: 1rem 2rem;
    }
}

/* Responsive Typography */
@media (max-width: 600px) {
    .container {
        width: 95%;
    }
    
    .question-title {
        font-size: 1.25rem;
    }
}