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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #000;
    background: #fff;
    max-width: 700px;
    margin: 0 auto;
    padding: 1.5rem;
}

h1 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

h2 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1rem;
}

.organization {
    font-style: italic;
    margin-bottom: 1rem;
}

hr {
    border: none;
    border-top: 1px solid #ccc;
    margin: 1.5rem 0;
}

/* Consent block */

.consent-block {
    margin-top: 1rem;
}

.consent-block ul {
    margin: 1rem 0 1.5rem 1.5rem;
}

.consent-block li {
    margin-bottom: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin: 1.5rem 0;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    width: 22px;
    height: 22px;
    min-width: 22px;
    margin-top: 2px;
    cursor: pointer;
}

/* Progress indicator */

.progress {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.25rem;
}

/* Questions */

.question {
    margin-bottom: 1.5rem;
}

.question > label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hint {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

/* Number inputs and selects */

input[type="number"],
select {
    width: 100%;
    padding: 0.625rem;
    font-size: 1rem;
    border: 1px solid #999;
    background: #fff;
    min-height: 44px;
}

input[type="number"]:focus,
select:focus {
    outline: 2px solid #000;
    outline-offset: 1px;
    border-color: #000;
}

/* Radio buttons */

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    min-height: 44px;
}

.radio-label input[type="radio"] {
    width: 20px;
    height: 20px;
    min-width: 20px;
    cursor: pointer;
}

/* Checkboxes (Section 3) */

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.check-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    min-height: 44px;
}

.check-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    min-width: 20px;
    cursor: pointer;
}

.check-exclusive {
    border-top: 1px solid #eee;
    margin-top: 0.25rem;
    padding-top: 0.75rem;
}

/* Conditional fields */

.conditional-fields {
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 3px solid #ddd;
    margin-bottom: 1.5rem;
}

/* Error styles */

.error-summary {
    background: #fef2f2;
    border: 1px solid #dc2626;
    color: #dc2626;
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.field-error {
    display: block;
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.has-error input,
.has-error select {
    border-color: #dc2626;
}

/* Navigation buttons */

.nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #ccc;
}

.btn-next,
.btn-prev,
.btn-submit {
    display: block;
    padding: 0.875rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    min-height: 48px;
    min-width: 44px;
    border: 2px solid #000;
}

.btn-next {
    background: #000;
    color: #fff;
}

.btn-prev {
    background: #fff;
    color: #000;
}

.btn-submit {
    background: #000;
    color: #fff;
    font-weight: 700;
    font-size: 1.15rem;
}

button[type="submit"]:disabled {
    background: #999;
    border-color: #999;
    color: #fff;
    cursor: not-allowed;
}

a {
    color: #000;
    text-decoration: underline;
}

main {
    padding-top: 1rem;
}

@media (min-width: 768px) {
    body {
        padding: 2rem;
    }

    h1 {
        font-size: 1.6rem;
    }

    .btn-next,
    .btn-prev,
    .btn-submit {
        width: auto;
    }
}

@media print {
    body {
        padding: 0;
        max-width: none;
    }

    button,
    .checkbox-label input[type="checkbox"] {
        display: none;
    }
}