/* === calc_patent.css === */
/* Patent calculator (ПСН): pro-mode toggle, schedule table, USN comparison, 1% info */

/* ---- Utility classes (замена inline styles) ---- */
.patent-hint--mt-sm { margin-top: 0.1rem; }
.patent-hint--mt { margin-top: 0.15rem; }
.patent-hint--mt-md { margin-top: 0.25rem; }
.patent-hint--mt-lg { margin-top: 0.5rem; }
.patent-hint--block { display: block; margin-top: 0.25rem; }
.patent-hint--warning { color: var(--warning, #f59e0b); }
.patent-hint--sm { font-size: 0.8rem; }
.patent-mt { margin-top: 12px; }
.patent-holidays-note-inline {
    border-left-color: var(--success, #10b981);
    background: var(--success-bg, rgba(16, 185, 129, 0.08));
}
.patent-result-grid-mb { margin-bottom: 12px; }
.patent-input-mt { margin-top: 0.5rem; }

/* ---- Pro mode toggle ---- */
.patent-pro-mode {
    margin-top: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
}
.patent-pro-mode__summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-main);
    list-style: none;
    user-select: none;
    transition: background var(--transition);
    border-radius: var(--radius) var(--radius) 0 0;
}
.patent-pro-mode__summary:hover {
    background: var(--bg-card-hover);
}
.patent-pro-mode__summary::-webkit-details-marker {
    display: none;
}
.patent-pro-mode__summary::marker {
    display: none;
}
.patent-pro-mode__title {
    display: flex;
    align-items: center;
    gap: 8px;
}
.patent-pro-mode__title::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 6px solid var(--text-muted);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: transform var(--transition);
}
.patent-pro-mode[open] .patent-pro-mode__title::before {
    transform: rotate(90deg);
}
.patent-pro-mode__badge {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
    background: var(--bg-surface);
    padding: 3px 10px;
    border-radius: 20px;
}
.patent-pro-mode__content {
    padding: 16px 18px 18px;
    border-top: 1px solid var(--border);
}

/* ---- FNS guide (info-блок перед полем стоимости) ---- */
.patent-fns-guide {
    margin: 0 0 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
}
.patent-fns-guide__summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-main);
    list-style: none;
    user-select: none;
    transition: background var(--transition);
    border-radius: var(--radius) var(--radius) 0 0;
}
.patent-fns-guide__summary:hover {
    background: var(--bg-card-hover);
}
.patent-fns-guide__summary::-webkit-details-marker {
    display: none;
}
.patent-fns-guide__summary::marker {
    display: none;
}
.patent-fns-guide__summary::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 6px solid var(--text-muted);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    transition: transform var(--transition);
}
.patent-fns-guide[open] .patent-fns-guide__summary::before {
    transform: rotate(90deg);
}
.patent-fns-guide__body {
    padding: 0 18px 16px;
    border-top: 1px solid var(--border);
}
.patent-fns-guide__warning {
    margin: 12px 0;
    padding: 10px 14px;
    background: var(--warning-bg, rgba(245, 158, 11, 0.08));
    border: 1px solid var(--warning-border, rgba(245, 158, 11, 0.25));
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    color: var(--text-main);
    line-height: 1.5;
}
.patent-fns-guide__steps {
    margin: 8px 0 12px;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.patent-fns-guide__steps li {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.patent-fns-guide__steps a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: opacity var(--transition);
}
.patent-fns-guide__steps a:hover {
    opacity: 0.8;
}
.patent-fns-guide__note {
    margin: 8px 0 0;
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ---- Holidays badge ---- */
.patent-holidays-badge {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--success);
    background: var(--success-bg, rgba(16, 185, 129, 0.12));
    border: 1px solid var(--success-border, rgba(16, 185, 129, 0.25));
    border-radius: 12px;
    padding: 2px 10px;
    margin-left: 6px;
    vertical-align: middle;
}

/* ---- Final cost highlight (inside result-highlight) ---- */
.patent-final-cost {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 6px;
    color: var(--success);
}
.patent-final-cost strong {
    font-size: 1.3rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity var(--transition);
}
.patent-final-cost strong:hover {
    opacity: 0.8;
}
.patent-final-cost .copy-hint {
    color: var(--success);
}

/* ---- Payment schedule table ---- */
.patent-schedule-table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0 4px;
    font-size: 0.92rem;
}
.patent-schedule-table th {
    text-align: left;
    padding: 8px 12px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}
.patent-schedule-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
}
.patent-schedule-table tr:last-child td {
    border-bottom: none;
}
.patent-schedule-table tr:hover td {
    background: var(--bg-card-hover);
}
.patent-schedule-table__date {
    font-variant-numeric: tabular-nums;
    font-weight: 500;
    white-space: nowrap;
}
.patent-schedule-table__amount {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    white-space: nowrap;
    transition: opacity var(--transition);
}
.patent-schedule-table__amount:hover {
    opacity: 0.8;
}
.patent-schedule-table__fraction {
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}
.patent-schedule-table__desc {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

/* ---- USN comparison plaque ---- */
.patent-usn-comparison {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 20px;
    border-radius: var(--radius);
    margin: 16px 0;
    border: 1px solid var(--border);
}
.patent-usn-comparison--win {
    background: var(--success-bg, rgba(16, 185, 129, 0.08));
    border-color: var(--success-border, rgba(16, 185, 129, 0.25));
}
.patent-usn-comparison--lose {
    background: var(--danger-bg, rgba(239, 68, 68, 0.08));
    border-color: var(--danger-border, rgba(239, 68, 68, 0.25));
}
.patent-usn-comparison__icon {
    flex-shrink: 0;
    margin-top: 2px;
}
.patent-usn-comparison--win .patent-usn-comparison__icon {
    color: var(--success);
}
.patent-usn-comparison--lose .patent-usn-comparison__icon {
    color: var(--danger);
}
.patent-usn-comparison__content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.patent-usn-comparison__label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}
.patent-usn-comparison__text {
    font-size: 1rem;
    color: var(--text-main);
    line-height: 1.5;
}
.patent-usn-comparison--win .patent-usn-comparison__text strong {
    color: var(--success);
}
.patent-usn-comparison--lose .patent-usn-comparison__text strong {
    color: var(--danger);
}

/* ---- 1% additional contribution info ---- */
.patent-1pct-info {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
    padding: 14px 18px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent-secondary, var(--primary));
    border-radius: var(--radius-sm);
    margin: 16px 0;
}
.patent-1pct-info__label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.patent-1pct-info__value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    font-variant-numeric: tabular-nums;
    transition: opacity var(--transition);
}
.patent-1pct-info__value:hover {
    opacity: 0.8;
}
.patent-1pct-info--empty {
    border-left-color: var(--text-muted);
}
.patent-1pct-info--empty .patent-1pct-info__label {
    color: var(--text-muted);
}

/* ---- Dark theme overrides ---- */
[data-theme="dark"] .patent-pro-mode {
    background: var(--bg-card);
    border-color: var(--border);
}
[data-theme="dark"] .patent-pro-mode__summary:hover {
    background: var(--bg-card-hover);
}
[data-theme="dark"] .patent-pro-mode__badge {
    background: var(--bg-surface);
    color: var(--text-muted);
}
[data-theme="dark"] .patent-schedule-table th {
    background: var(--bg-surface);
    color: var(--text-muted);
}
[data-theme="dark"] .patent-schedule-table tr:hover td {
    background: var(--bg-card-hover);
}
[data-theme="dark"] .patent-1pct-info {
    background: var(--bg-surface);
    border-color: var(--border);
}
[data-theme="dark"] .patent-holidays-badge {
    background: var(--success-bg, rgba(16, 185, 129, 0.18));
    border-color: var(--success-border, rgba(16, 185, 129, 0.35));
}
[data-theme="dark"] .patent-fns-guide {
    background: var(--bg-surface);
    border-color: var(--border);
}
[data-theme="dark"] .patent-fns-guide__summary:hover {
    background: var(--bg-card-hover);
}
[data-theme="dark"] .patent-fns-guide__warning {
    background: var(--warning-bg, rgba(245, 158, 11, 0.12));
    border-color: var(--warning-border, rgba(245, 158, 11, 0.3));
}

/* ---- Print-only header (hidden on screen, visible in print) ---- */
.print-patent-header {
    display: none;
}

/* ---- Search filter for large selects ---- */
.patent-search-input {
    margin-bottom: 6px;
    font-size: 0.88rem;
    background: var(--bg-surface);
}
.patent-search-input::placeholder {
    color: var(--text-muted);
    font-style: italic;
}
.patent-filterable-select {
    display: block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.patent-filterable-select option {
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.patent-filterable-select optgroup {
    max-width: 100%;
}

/* ---- Income limit progress bar ---- */
.patent-income-bar {
    margin: 16px 0;
    padding: 14px 18px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.patent-income-bar__header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.patent-income-bar__title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}
.patent-income-bar__value {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
    cursor: pointer;
    transition: opacity var(--transition);
}
.patent-income-bar__value:hover {
    opacity: 0.8;
}
.patent-income-bar__track {
    position: relative;
    height: 10px;
    background: var(--bg-card-hover, rgba(0, 0, 0, 0.06));
    border-radius: 5px;
    overflow: hidden;
}
.patent-income-bar__fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.4s ease, background 0.3s ease;
    min-width: 2px;
}
.patent-income-bar__fill--success {
    background: var(--success, #10b981);
}
.patent-income-bar__fill--warning {
    background: var(--warning, #f59e0b);
}
.patent-income-bar__fill--danger {
    background: var(--danger, #ef4444);
}
.patent-income-bar__threshold {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 75%;
    width: 2px;
    background: var(--text-muted);
    opacity: 0.4;
    z-index: 1;
}
.patent-income-bar__hint {
    margin-top: 8px;
    font-size: 0.85rem;
    font-weight: 500;
}
.patent-income-bar__hint--success {
    color: var(--success, #10b981);
}
.patent-income-bar__hint--warning {
    color: var(--warning, #f59e0b);
}
.patent-income-bar__hint--danger {
    color: var(--danger, #ef4444);
}

/* ---- Payment timeline (horizontal scale) ---- */
.patent-timeline {
    margin: 12px 0 20px;
    padding: 20px 16px 8px;
}
.patent-timeline__track {
    position: relative;
    height: 40px;
    margin: 0 12px;
}
.patent-timeline__line {
    position: absolute;
    top: 19px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border);
    border-radius: 1px;
}
.patent-timeline__point {
    position: absolute;
    top: 0;
    transform: translateX(-50%);
    z-index: 2;
}
.patent-timeline__point--start {
    left: 0%;
}
.patent-timeline__dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-card);
    box-shadow: 0 0 0 1px var(--primary);
    margin: 12px auto 0;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}
.patent-timeline__point:hover .patent-timeline__dot {
    transform: scale(1.3);
    box-shadow: 0 0 0 2px var(--primary), 0 0 8px rgba(var(--accent-rgb, 0, 184, 212), 0.4);
}
.patent-timeline__point--start .patent-timeline__dot {
    background: var(--text-muted);
    box-shadow: 0 0 0 1px var(--text-muted);
}
.patent-timeline__point--start:hover .patent-timeline__dot {
    box-shadow: 0 0 0 2px var(--text-muted);
}
.patent-timeline__tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-tooltip, var(--bg-card));
    color: var(--text-tooltip, var(--text-main));
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    box-shadow: 0 4px 16px var(--shadow-tooltip, rgba(0, 0, 0, 0.3));
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 2px;
    align-items: center;
    margin-bottom: 8px;
}
.patent-timeline__point:hover .patent-timeline__tooltip {
    opacity: 1;
    visibility: visible;
}
.patent-timeline__date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-tooltip, var(--text-main));
    font-variant-numeric: tabular-nums;
}
.patent-timeline__amount {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}
.patent-timeline__fraction {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.patent-timeline__label {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ---- Dark theme: income bar + timeline ---- */
[data-theme="dark"] .patent-income-bar {
    background: var(--bg-surface);
    border-color: var(--border);
}
[data-theme="dark"] .patent-income-bar__track {
    background: var(--bg-card-hover, rgba(255, 255, 255, 0.08));
}
[data-theme="dark"] .patent-timeline__dot {
    border-color: var(--bg-card);
}

/* ---- CTA card (v3.1) ---- */
.patent-cta {
    padding: 16px 20px;
    border-radius: var(--radius);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    margin-bottom: 16px;
}
.patent-cta__title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 8px;
}
.patent-cta__list {
    margin: 0;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ---- Intro block + Alternatives (F7) ---- */
.patent-intro {
    padding: 14px 20px;
    border-radius: var(--radius);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    margin-bottom: 20px;
}
.patent-intro p {
    margin: 0 0 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.patent-intro p:last-child {
    margin-bottom: 0;
}

.patent-alternatives {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 16px;
    padding: 14px 20px;
    border-radius: var(--radius);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.patent-alternatives__label {
    font-weight: 600;
    color: var(--text-main);
}
.patent-alternatives a {
    white-space: nowrap;
}

/* ---- FNS checklist ---- */
.patent-fns-checklist {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 8px 0 12px;
}
.patent-fns-checklist__item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition);
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.patent-fns-checklist__item:hover {
    background: var(--bg-card-hover);
}
.patent-fns-checklist__cb {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    cursor: pointer;
}
.patent-fns-checklist__item input:checked + span {
    text-decoration: line-through;
    color: var(--text-muted);
}
.patent-fns-checklist__ext-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px dashed var(--primary);
    padding-bottom: 1px;
    transition: opacity var(--transition);
}
.patent-fns-checklist__ext-link:hover {
    opacity: 0.8;
}
.patent-fns-checklist__ext-link svg {
    flex-shrink: 0;
}

/* ---- Step-by-step layout (v3.1) ---- */
.patent-step {
    margin-bottom: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
}
.patent-step__header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    font-weight: 600;
    color: var(--text-main);
    border-radius: var(--radius) var(--radius) 0 0;
}
.patent-step__num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--text-on-primary);
    font-size: 0.9rem;
    font-weight: 700;
    flex-shrink: 0;
}
.patent-step__num--plus {
    background: var(--bg-surface);
    color: var(--text-muted);
    border: 1px dashed var(--border);
}
.patent-step__title {
    font-size: 1rem;
}
.patent-step__body {
    padding: 0 18px 16px;
    border-top: 1px solid var(--border);
}
.patent-step--optional {
    border-style: dashed;
    opacity: 0.85;
}
.patent-step__guide {
    display: block;
    margin-top: 8px;
    padding-left: 10px;
    border-left: 2px solid var(--border);
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}
.patent-step__preview {
    display: block;
    margin-top: 6px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ---- Result main card (v3.1) ---- */
.patent-result-main {
    padding: 20px 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
    margin-bottom: 16px;
}
.patent-result-main__label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.patent-result-main__value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
    cursor: pointer;
}
.patent-result-main__period {
    display: block;
    margin-top: 4px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}
.patent-result-main__holidays {
    display: inline-block;
    margin-left: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--success);
    background: var(--success-bg, rgba(16, 185, 129, 0.12));
    border: 1px solid var(--success-border, rgba(16, 185, 129, 0.25));
    border-radius: 12px;
    padding: 2px 10px;
}
.patent-result-main__rate {
    display: block;
    margin-top: 4px;
    font-size: 0.78rem;
    color: var(--text-muted);
}
.patent-result-main__deflator {
    display: block;
    margin-top: 2px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ---- Result final cost (v3.1) ---- */
.patent-result-final {
    padding: 14px 20px;
    border: 1px solid var(--success-border, rgba(16, 185, 129, 0.25));
    border-radius: var(--radius);
    background: var(--success-bg, rgba(16, 185, 129, 0.08));
    margin-bottom: 16px;
    font-size: 1rem;
    color: var(--text-main);
}
.patent-result-final strong {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--success);
    cursor: pointer;
    transition: opacity var(--transition);
}
.patent-result-final strong:hover {
    opacity: 0.8;
}

/* ---- Result total tax burden (F2) ---- */
.patent-result-budget {
    padding: 12px 20px;
    border: 1px solid var(--primary-border, rgba(0, 184, 212, 0.25));
    border-radius: var(--radius);
    background: var(--primary-bg, rgba(0, 184, 212, 0.06));
    margin-bottom: 16px;
    font-size: 1rem;
    color: var(--text-main);
}
.patent-result-budget strong {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    transition: opacity var(--transition);
}
.patent-result-budget strong:hover {
    opacity: 0.8;
}

/* ---- Loss recalc (F4 — утрата ПСН) ---- */
.patent-loss-recalc {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--danger-border, rgba(220, 38, 38, 0.25));
}
.patent-loss-recalc ul {
    list-style: none;
    padding: 0;
    margin: 8px 0;
}
.patent-loss-recalc li {
    padding: 2px 0;
    font-size: 0.9rem;
}
.patent-loss-recalc__total {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px dashed var(--danger-border, rgba(220, 38, 38, 0.2));
    font-size: 1rem;
}
.patent-loss-recalc__total strong {
    font-size: 1.15rem;
    color: var(--danger, #dc2626);
}
.patent-loss-recalc p {
    font-size: 0.85rem;
    margin: 6px 0;
    color: var(--text-main);
}

/* ---- NPD comparison (F5) ---- */
.patent-npd-comparison {
    margin-top: 12px;
}
.patent-npd-comparison > p {
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: 12px;
}
.patent-npd-contributions {
    margin: 16px 0;
    overflow-x: auto;
}
.patent-npd-contrib-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.patent-npd-contrib-table th,
.patent-npd-contrib-table td {
    border: 1px solid var(--border-color, #e0e0e0);
    padding: 8px 12px;
    text-align: left;
}
.patent-npd-contrib-table th {
    background: var(--bg-secondary, rgba(0,0,0,0.03));
    font-weight: 600;
}
.patent-npd-contrib-table td:not(:first-child) {
    text-align: right;
    white-space: nowrap;
}
.patent-npd-disclaimer {
    margin-top: 12px;
    padding: 12px 16px;
    border-left: 3px solid var(--warning, #f59e0b);
    background: var(--warning-bg, rgba(245, 158, 11, 0.06));
    border-radius: var(--radius-sm, 4px);
}
.patent-npd-disclaimer ul {
    list-style: disc;
    padding-left: 20px;
    margin: 6px 0 0;
}
.patent-npd-disclaimer li {
    margin: 3px 0;
}

/* ---- Result holidays note (v3.1) ---- */
.patent-result-holidays-note {
    padding: 12px 18px;
    border-left: 3px solid var(--warning, #f59e0b);
    background: var(--warning-bg, rgba(245, 158, 11, 0.08));
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ---- Result details (collapsed sections, v3.1) ---- */
.patent-result-details {
    margin-bottom: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
}
.patent-result-details > summary {
    padding: 12px 18px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    list-style: none;
    user-select: none;
    transition: background var(--transition);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.patent-result-details > summary:hover {
    background: var(--bg-card-hover);
}
.patent-result-details > summary::-webkit-details-marker {
    display: none;
}
.patent-result-details > summary::before {
    content: "";
    display: inline-block;
    width: 0; height: 0;
    border-left: 6px solid var(--text-muted);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    margin-right: 8px;
    transition: transform var(--transition);
}
.patent-result-details[open] > summary::before {
    transform: rotate(90deg);
}
.patent-result-details[open] > summary {
    border-bottom: 1px solid var(--border);
}

/* ---- Dark theme: new classes ---- */
[data-theme="dark"] .patent-step {
    background: var(--bg-card);
    border-color: var(--border);
}
[data-theme="dark"] .patent-step__num {
    background: var(--primary);
    color: var(--text-on-primary);
}
[data-theme="dark"] .patent-result-main {
    background: var(--bg-surface);
}
[data-theme="dark"] .patent-result-details {
    background: var(--bg-card);
}
[data-theme="dark"] .patent-step--optional {
    border-style: dashed;
    opacity: 0.9;
}

/* ---- Mobile: new classes ---- */
@media (max-width: 768px) {
    .patent-step__header {
        padding: 10px 14px;
        font-size: 0.92rem;
    }
    .patent-step__num {
        width: 24px; height: 24px;
        font-size: 0.82rem;
    }
    .patent-step__body {
        padding: 0 14px 12px;
    }
    .patent-result-main {
        padding: 16px 18px;
    }
    .patent-result-main__value {
        font-size: 1.6rem;
    }
    .patent-result-details > summary {
        padding: 10px 14px;
        font-size: 0.92rem;
    }
}

/* ---- Responsive: timeline + income bar ---- */
@media (max-width: 768px) {
    .patent-income-bar {
        padding: 12px 14px;
    }
    .patent-income-bar__header {
        flex-direction: column;
        gap: 4px;
    }
    .patent-timeline {
        padding: 16px 8px 8px;
    }
    .patent-timeline__tooltip {
        font-size: 0.78rem;
        padding: 6px 8px;
    }
}

@media (max-width: 480px) {
    .patent-timeline__tooltip {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 2px 0;
        margin-bottom: 0;
        display: flex;
        flex-direction: row;
        gap: 6px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .patent-timeline__point {
        transform: none;
    }
    .patent-timeline__dot {
        margin-top: 6px;
    }
    .patent-timeline__track {
        height: auto;
    }
    .patent-timeline__line {
        display: none;
    }
    .patent-timeline__point {
        position: static;
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: 8px;
    }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .patent-schedule-table {
        font-size: 0.85rem;
    }
    .patent-schedule-table th {
        padding: 6px 8px;
    }
    .patent-schedule-table td {
        padding: 8px;
    }
    .patent-usn-comparison {
        padding: 12px 14px;
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .patent-pro-mode__summary {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        padding: 12px 14px;
    }
    .patent-pro-mode__content {
        padding: 12px 14px 14px;
    }
    .patent-fns-guide__summary {
        padding: 10px 14px;
        font-size: 0.9rem;
    }
    .patent-fns-guide__body {
        padding: 0 14px 12px;
    }
    .patent-fns-guide__warning {
        font-size: 0.82rem;
        padding: 8px 10px;
    }
    .patent-fns-guide__steps li {
        font-size: 0.82rem;
    }
    .patent-schedule-table {
        font-size: 0.82rem;
    }
    .patent-schedule-table__desc {
        font-size: 0.78rem;
    }
    .patent-usn-comparison {
        flex-direction: column;
        gap: 8px;
    }
    .patent-1pct-info {
        flex-direction: column;
        gap: 4px;
        padding: 12px 14px;
    }
    .patent-1pct-info__value {
        font-size: 1.1rem;
    }
    .patent-final-cost strong {
        font-size: 1.1rem;
    }
    .patent-alternatives {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
    .patent-intro {
        padding: 12px 14px;
    }
    .patent-intro p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .patent-schedule-table thead {
        display: none;
    }
    .patent-schedule-table,
    .patent-schedule-table tbody,
    .patent-schedule-table tr,
    .patent-schedule-table td {
        display: block;
        width: 100%;
    }
    .patent-schedule-table tr {
        margin-bottom: 12px;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 8px;
    }
    .patent-schedule-table td {
        border-bottom: none;
        padding: 4px 0;
        display: flex;
        justify-content: space-between;
        gap: 8px;
    }
    .patent-schedule-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-muted);
        font-size: 0.78rem;
    }
}