.m3-card {
    background-color: var(--md-surface);
    border-radius: var(--radius-card);
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
    transition: background-color var(--md-motion-duration-medium) var(--md-motion-easing-standard),
                transform var(--md-motion-duration-short) var(--md-motion-easing-emphasized),
                box-shadow var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

.m3-card.interactive { cursor: pointer; }
.m3-card.interactive:hover {
    transform: translateY(-2px);
    background-color: var(--md-surface-low);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.form-question-card {
    position: relative;
    background-color: transparent;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: none;
    padding: 16px;
    gap: 12px;
    transition: background-color var(--md-motion-duration-short) var(--md-motion-easing-standard),
                border-color var(--md-motion-duration-short) var(--md-motion-easing-standard),
                box-shadow var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

/* §5.2: focus-within — left border indicator exactly as documented */
.form-question-card:focus-within, .form-question-card.active-card {
    background-color: var(--md-surface-low);
    border-color: rgba(92, 99, 112, 0.18);
    box-shadow: var(--focus-glow);
    border-left: 6px solid var(--md-primary);  /* §5.2, §10.3 exact */
    padding-left: calc(32px - 5px);            /* §10.3: compensate for border-left growth */
    border-top-left-radius: var(--md-shape-xs); /* §10.3: xs = 4px */
    border-bottom-left-radius: var(--md-shape-xs);
}

.form-question-card.has-error {
    border-color: rgba(186, 26, 26, 0.18);
    background-color: rgba(255, 218, 214, 0.22);
}

.form-header-card {
    padding: 20px 24px;
    background-color: var(--md-surface);
    border-top: 4px solid var(--md-primary);
    border-radius: var(--radius-card);
}

.badge-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background-color: var(--md-surface-low);
    font-size: var(--md-type-label-large-size);
    font-weight: 500;
    color: var(--md-text);
    width: fit-content;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: var(--radius-full);
    background-color: var(--md-text-sub);
}

.badge-dot.ready { background-color: #1B4332; }

.loading-card {
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 16px;
    min-height: 180px;
}

#model-loading-text {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--md-text-sub);
}

.wizard-step { display: none; }

.wizard-step.active-step {
    display: flex;
    animation: m3-reveal-transition var(--md-motion-duration-medium) var(--md-motion-easing-emphasized) forwards;
}

/* Registration page */
.registration-page-shell {
    --reg-control-height: 48px;
    --reg-control-radius: var(--radius-sm);
    --reg-card-radius: var(--radius-md);
    --reg-space-1: 8px;
    --reg-space-2: 12px;
    --reg-space-3: 16px;
    --reg-space-4: 24px;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    display: grid;
    gap: var(--reg-space-3);
}

.registration-logo-text,
.registration-footer-textmark {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.registration-backlink {
    min-height: 48px;
    padding: 0 16px;
    font-size: 13px;
}

.registration-intro-card {
    padding: var(--reg-space-4);
    gap: var(--reg-space-2);
    align-self: start;
    box-shadow: none;
    border-top: none;
}

.registration-intro-card .layout-section-tag {
    color: var(--md-primary);
}

.registration-intro-title {
    font-size: var(--md-type-headline-large-size);
    line-height: var(--md-type-headline-large-lh);
    letter-spacing: 0;
    color: var(--md-text);
}

.registration-intro-text {
    max-width: 62ch;
    font-size: var(--md-type-body-large-size);
    color: var(--md-text-sub);
    line-height: var(--md-type-body-large-lh);
}

.registration-intro-points {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.registration-intro-points .badge-chip {
    flex: 1 1 220px;
    justify-content: center;
    width: auto;
    text-align: center;
}

.registration-intro-points .badge-dot.ready {
    background-color: var(--md-primary);
}

.registration-form-shell {
    width: 100%;
    display: flex;
    flex-direction: column;
}

.registration-form-card {
    padding: var(--reg-space-4);
    gap: var(--reg-space-3);
    box-shadow: none;
    border-color: rgba(0, 0, 0, 0.04);
    border-top: none;
}

.registration-progress {
    display: flex;
    flex-direction: column;
    gap: var(--reg-space-2);
    padding-bottom: var(--reg-space-2);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.registration-progress-copy {
    display: flex;
    flex-direction: column;
    gap: var(--reg-space-1);
}

.registration-progress-text {
    font-size: var(--md-type-body-medium-size);
    line-height: var(--md-type-body-medium-lh);
    color: var(--md-text-sub);
}

.registration-stepper {
    margin-bottom: 0;
}

.registration-stepper .step-dots {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;                                  /* tighter — refined */
}

.registration-stepper .step-dot {
    width: 100%;
    height: 3px;                               /* thinner — more refined */
    border-radius: var(--radius-full);
    background-color: var(--md-surface-low);
    transition: background-color var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.registration-stepper .step-dot.active,
.registration-stepper .step-dot.completed {
    background-color: var(--md-primary);
}
/* No scaleX on active — §1.2: no animations not tied to state transitions */

.registration-form-section {
    display: flex;
    flex-direction: column;
    gap: var(--reg-space-3);
}

.registration-form-heading {
    display: flex;
    flex-direction: column;
    gap: var(--reg-space-1);
}

.registration-form-kicker {
    color: var(--md-primary);
    font-size: var(--md-type-label-small-size); /* 11px — Label Small */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;                     /* §9.2 Label Small: 0.5px — but kicker uses 1.5px custom */
    line-height: var(--md-type-label-small-lh);
}

.registration-form-title {
    font-size: var(--md-type-title-large-size);  /* 22px — Title Large */
    line-height: var(--md-type-title-large-lh);  /* 28px */
    letter-spacing: 0;
    font-weight: 600;
    color: var(--md-text);
}

.registration-form-note {
    font-size: var(--md-type-body-medium-size);  /* 14px — Body Medium */
    line-height: var(--md-type-body-medium-lh);  /* 20px */
    letter-spacing: 0.25px;
    color: var(--md-text-sub);
}

.registration-field-grid {
    display: grid;
    gap: var(--reg-space-3);
}

.registration-fieldset {
    border: 0;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--reg-space-2);
    min-width: 0;
}

.registration-fieldset legend {
    padding: 0;
    margin-bottom: 2px;
    line-height: var(--md-type-label-large-lh);
}

.registration-caption {
    font-size: var(--md-type-body-small-size);  /* 12px — Body Small */
    letter-spacing: 0.4px;
    line-height: var(--md-type-body-small-lh);  /* 16px */
    color: var(--md-text-sub);
}

.form-question-card,
.registration-upload-card {
    width: 100%;
    border-radius: var(--reg-card-radius);
}

.registration-upload-card {
    background-color: var(--md-surface-low);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: background-color var(--md-motion-duration-short) var(--md-motion-easing-standard),
                border-color var(--md-motion-duration-short) var(--md-motion-easing-standard),
                transform var(--md-motion-duration-short) var(--md-motion-easing-emphasized),
                box-shadow var(--md-motion-duration-short) var(--md-motion-easing-emphasized);
}

.registration-upload-card:hover {
    background-color: var(--md-surface-high);
    transform: translateY(-1px);
}

.registration-upload-card.is-dragover {
    background-color: var(--md-primary-container);
    border-color: rgba(92, 99, 112, 0.2);
    box-shadow: var(--focus-glow);
}

.registration-upload-copy {
    display: flex;
    align-items: center;
    gap: var(--reg-space-2);
}

.registration-upload-icon {
    color: var(--md-primary);
    font-size: 20px;
    line-height: 1;
    flex-shrink: 0;
}

.registration-upload-copy-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.registration-upload-intro {
    font-size: var(--md-type-body-small-size);
    color: var(--md-text-sub);
    line-height: var(--md-type-body-small-lh);
}

.registration-select {
    cursor: pointer;
}

.registration-upload-trigger {
    text-decoration: none;
    width: 100%;
    min-height: var(--reg-control-height);
    border-radius: var(--reg-control-radius);
}

.registration-upload-actions {
    display: flex;
    flex-direction: column;
    gap: var(--reg-space-1);
    width: 100%;
}

.registration-upload-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.registration-upload-name {
    font-size: var(--md-type-body-medium-size);
    font-weight: 600;
    color: var(--md-text);
    word-break: break-word;
    min-height: 20px;
}

.registration-upload-helper {
    font-size: var(--md-type-body-small-size);
    color: var(--md-text-sub);
    line-height: var(--md-type-body-small-lh);
}

.registration-form-card .m3-inline-alert {
    width: 100%;
    padding: var(--reg-space-1) var(--reg-space-2);
    border-radius: var(--radius-sm);
    background-color: var(--md-error-container);
    color: var(--md-text);
    font-size: var(--md-type-body-small-size);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--reg-space-1);
    line-height: var(--md-type-body-small-lh);
}

.registration-form-card .m3-inline-alert .material-symbols-rounded {
    color: var(--md-error);
    font-size: 20px;
    flex-shrink: 0;
}

.registration-form-shell .m3-text-label {
    font-weight: 600;
    line-height: var(--md-type-label-large-lh);
}

.registration-form-shell .m3-text-input,
.registration-form-shell .m3-radio-item,
.registration-form-shell .m3-filled-button,
.registration-form-shell .m3-outlined-button {
    min-height: var(--reg-control-height);
    border-radius: var(--reg-control-radius);
}

.registration-form-shell .m3-text-input {
    padding: 0 14px;
}

.registration-form-shell .registration-textarea {
    min-height: 132px;
    padding: 12px 14px;
}

.registration-actions {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: var(--reg-space-2);
    flex-wrap: wrap;
    padding-top: var(--reg-space-3);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.registration-action-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;                                  /* tighter — refined */
    width: 100%;
}

.registration-action-buttons > * {
    width: 100%;
    min-height: 48px;                          /* §10.3 — button min-height */
    border-radius: var(--radius-button);       /* §10.3 — radius-button: full */
}

.registration-form-shell .m3-filled-button:focus-visible,
.registration-form-shell .m3-outlined-button:focus-visible,
.registration-form-shell .m3-radio-item:focus-within,
.registration-form-shell .m3-text-input:focus-visible,
.registration-upload-card:focus-within {
    box-shadow: var(--focus-glow);
}

.registration-form-shell .m3-filled-button,
.registration-form-shell .m3-outlined-button {
    transition: transform var(--md-motion-duration-short) var(--md-motion-easing-emphasized),
                box-shadow var(--md-motion-duration-short) var(--md-motion-easing-standard),
                background-color var(--md-motion-duration-short) var(--md-motion-easing-standard),
                color var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.registration-form-shell .m3-filled-button:hover:not(:disabled) {
    background-color: var(--md-primary);
    transform: scale(1.02);
}

.registration-form-shell .m3-outlined-button:hover:not(:disabled) {
    background-color: var(--md-surface-high);
    transform: scale(1.02);
}

.registration-textarea {
    resize: vertical;
    min-height: 132px;
}

.registration-footer {
    padding: 32px 16px;
    text-align: center;
}

.registration-footer-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.registration-footer-logo {
    pointer-events: none;
    justify-content: center;
    margin-bottom: 4px;
}

.registration-footer-copy {
    max-width: 720px;
    margin: 0 auto;
    font-size: 11px;
    color: var(--md-text-sub);
    line-height: var(--md-type-label-small-lh);
}

.registration-footer-bottom {
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    width: 100%;
    padding-top: 16px;
    margin-top: 4px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.registration-footer-meta {
    font-size: 11px;
    color: var(--md-text-sub);
}

.registration-footer-legal {
    font-size: 9px;
    opacity: 0.7;
    color: var(--md-text-sub);
}

.registration-success {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 24px;
    padding: 44px 28px 40px;
}

.registration-success-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.registration-success-icon-wrap {
    width: 72px;
    height: 72px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(27, 67, 50, 0.12);
    color: #163829;
    flex-shrink: 0;
}

.registration-success-icon {
    font-size: 36px;
    line-height: 1;
    color: inherit;
}

.registration-success-title {
    font-size: var(--md-type-title-large-size);
    font-weight: 600;
    line-height: var(--md-type-title-large-lh);
    color: var(--md-text);
}

.registration-success-text {
    max-width: 560px;
    line-height: var(--md-type-body-medium-lh);
    color: var(--md-text-sub);
    margin: 0 auto;
}

.registration-success-summary {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    text-align: left;
}

.registration-success-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
    padding: 18px;
    border-radius: var(--radius-md);
    background-color: var(--md-surface-low);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.registration-success-group--wide {
    grid-column: 1 / -1;
}

.registration-success-group-head {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.registration-success-group-label {
    font-size: var(--md-type-label-small-size);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--md-text-sub);
}

.registration-success-group-note {
    font-size: var(--md-type-body-small-size);
    line-height: 1.5;
    color: var(--md-text-sub);
}

.registration-success-group-list {
    display: grid;
    gap: 10px;
}

.registration-success-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 0;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background-color: var(--md-surface);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.registration-success-item-label {
    font-size: var(--md-type-label-small-size);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--md-text-sub);
}

.registration-success-item-value {
    font-size: var(--md-type-body-medium-size);
    line-height: var(--md-type-body-medium-lh);
    color: var(--md-text);
    word-break: break-word;
}

.registration-success-actions {
    display: flex;
    justify-content: center;
    width: 100%;
}

.registration-success-action {
    margin-top: 0;
    text-decoration: none;
    min-width: 240px;
    background-color: #1B4332;
    color: #ffffff;
}

.registration-success-action:hover:not(:disabled) {
    background-color: #163829;
}

.registration-success-action:active:not(:disabled) {
    background-color: #132C21;
}

@media (min-width: 860px) {
    .registration-success-summary {
        grid-template-columns: 1fr;
    }
}

.registration-review-shell {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    border-radius: var(--radius-card);
    background-color: var(--md-surface);
    border: none;
    box-shadow: none;
}

.registration-review-intro {
    font-size: var(--md-type-body-large-size);
    line-height: var(--md-type-body-large-lh);
    color: var(--md-text-sub);
}

.registration-review-summary {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    width: 100%;
}

.registration-review-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 18px;
    border-radius: var(--radius-md);
    background-color: var(--md-surface-low);
    border: none;
}

.registration-review-group--wide {
    grid-column: auto;
}

.registration-review-group-head {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.registration-review-group-label {
    font-size: var(--md-type-label-small-size);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--md-text-sub);
}

.registration-review-group-note {
    font-size: var(--md-type-body-small-size);
    line-height: 1.5;
    color: var(--md-text-sub);
}

.registration-review-list {
    display: grid;
    gap: 10px;
}

.registration-review-item {
    display: grid;
    grid-template-columns: minmax(96px, 132px) minmax(0, 1fr);
    gap: 12px;
    align-items: start;
    min-width: 0;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background-color: var(--md-surface);
    border: none;
}

.registration-review-item-label {
    font-size: var(--md-type-label-small-size);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--md-text-sub);
}

.registration-review-item-value {
    font-size: var(--md-type-body-medium-size);
    line-height: var(--md-type-body-medium-lh);
    color: var(--md-text);
    word-break: break-word;
}

.registration-review-audio audio {
    width: 100%;
}

.registration-review-empty {
    font-size: var(--md-type-body-small-size);
    line-height: 1.6;
    color: var(--md-text-sub);
}

@media (max-width: 679px) {
    .registration-review-summary {
        grid-template-columns: 1fr;
    }

    .registration-review-item {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 860px) {
    .registration-review-summary {
        gap: 14px;
    }

    .registration-review-group {
        gap: 14px;
    }
}

@keyframes m3-reveal-transition {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}