:root {
    --primary-color: #0056b3;
    --primary-light: #e6f0fa;
    --secondary-color: #28a745;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s ease;
}

* {
    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;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: #1a1a1a;
    margin-bottom: 1rem;
    font-weight: 700;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    text-decoration: underline;
}

/* Layout */
.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

footer {
    background-color: #2c3e50;
    color: var(--white);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
}

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

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

.footer-links a {
    color: #bdc3c7;
}

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

.copyright {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #95a5a6;
    font-size: 0.9rem;
}

/* Components */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn:hover {
    background-color: #004494;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #6c757d;
}

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

.btn-block {
    display: block;
    width: 100%;
}

.card {
    background-color: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

/* Progress Bar */
.progress-container {
    background-color: #e9ecef;
    border-radius: 10px;
    height: 10px;
    margin: 1rem 0 2rem;
    overflow: hidden;
}

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

/* Survey Styles */
.question-container {
    margin-bottom: 2rem;
}

.question-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.options-grid {
    display: grid;
    gap: 1rem;
}

.option-label {
    display: flex;
    align-items: center;
    padding: 1rem;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

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

.option-input {
    margin-right: 1rem;
    width: 20px;
    height: 20px;
}

.option-input:checked + span {
    font-weight: 600;
}

.option-label:has(.option-input:checked) {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

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

/* Content Article */
.content-article {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.content-article h3 {
    color: var(--primary-color);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    padding: 1rem;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    display: none;
}

.cookie-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

@media (max-width: 600px) {
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .nav-buttons {
        flex-direction: column-reverse;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
    }
}