body {
    background-color: var(--bg-light);
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    margin: 0;
    padding-bottom: 50px;
}
.survey-wrapper {
    max-width: 500px;
    margin: 100px auto; 
    padding: 0 20px;
}

.lang-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 40px 30px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.lang-card h1 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.lang-button {
    display: inline-block;
    text-decoration: none;
    padding: 15px 30px;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    width: 150px;
    transition: background-color 0.2s, transform 0.2s;
}

.survey-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.03);
}

.header-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--text-primary);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
}

.divider {
    color: var(--border-color);
}

.survey-wrapper {
    max-width: 700px;
    margin: 30px auto;
    padding: 0 20px;
}

.survey-content {
    display: none;
}

.survey-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.intro-block {
    margin-bottom: 30px;
}

.intro-block h1 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.intro-block h2 {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 15px;
}

.badge {
    display: inline-block;
    background-color: #e8f5e9;
    color: #2e7d32;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

.survey-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.survey-card h3 {
    margin-top: 0;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1rem;
    color: var(--color-blue);
}

.question-item {
    margin-bottom: 25px;
}

.question-item:last-child {
    margin-bottom: 0;
}

.q-title {
    display: block;
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 1rem;
}

.note {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

@media (max-width: 500px) {
    .options-grid { grid-template-columns: 1fr; }
}

.radio-custom, .checkbox-custom {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.95rem;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background 0.2s;
}

.radio-custom:hover, .checkbox-custom:hover {
    background-color: var(--bg-light);
}

.radio-custom input, .checkbox-custom input {
    margin-right: 10px;
    accent-color: var(--color-blue);
    transform: scale(1.2);
}

.with-input {
    flex-wrap: wrap;
}

.inline-input {
    border: none;
    border-bottom: 1px solid var(--text-secondary);
    background: transparent;
    padding: 3px 5px;
    margin-left: 10px;
    font-size: 0.95rem;
    outline: none;
    flex-grow: 1;
}

.inline-input:focus {
    border-bottom-color: var(--color-blue);
}

.text-input, .text-area {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    background: #fafafa;
    box-sizing: border-box;
    transition: border 0.2s;
}

.text-input:focus, .text-area:focus {
    border-color: var(--color-blue);
    background: #fff;
    outline: none;
}

.lang-options {
    display: flex;
    justify-content: center;
    gap: 8px;
}