/**
 * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 *
 * HGDP K72 global composition report visual system and responsive layout.
 */

:root {
    --k72-canvas: #080d1d;
    --k72-canvas-raised: #0d1429;
    --k72-surface: #121c36;
    --k72-surface-elevated: #18254a;
    --k72-surface-strong: #202f59;
    --k72-text: #f4f7ff;
    --k72-text-muted: #b5c0d9;
    --k72-border: #2d3d68;
    --k72-border-strong: #4d6397;
    --k72-focus: #8eacff;
    --k72-primary: #6e8bff;
    --k72-primary-strong: #9db1ff;
    --k72-success: #55c8a1;
    --k72-warning: #e4b857;
    --k72-danger: #f4879d;
    --k72-content-width: 1180px;
}

.k72-main {
    background: var(--k72-canvas);
    color: var(--k72-text);
    min-height: 100vh;
    overflow: clip;
}

.k72-main .container {
    max-width: var(--k72-content-width);
}

.k72-main a {
    color: var(--k72-primary-strong);
}

.k72-main a:hover {
    color: #ffffff;
}

.k72-main :focus-visible,
.k72-mobile-nav a:focus-visible,
.k72-page-nav a:focus-visible {
    outline: 3px solid var(--k72-focus);
    outline-offset: 3px;
}

.k72-breadcrumb-shell {
    padding-top: 1.5rem;
}

.k72-breadcrumb-shell .breadcrumb,
.k72-breadcrumb-shell .breadcrumb a,
.k72-breadcrumb-shell .breadcrumb-item + .breadcrumb-item::before {
    color: var(--k72-text-muted);
}

.k72-skip-link {
    background: var(--k72-primary);
    color: #061026;
    font-weight: 700;
    left: 1rem;
    padding: .75rem 1rem;
    position: fixed;
    top: -5rem;
    z-index: 1100;
}

.k72-skip-link:focus {
    top: 1rem;
}

.k72-scroll-progress {
    background: var(--k72-primary);
    height: 3px;
    left: 0;
    position: fixed;
    top: 0;
    transform-origin: left;
    width: 100%;
    z-index: 1050;
}

.k72-page-nav {
    display: flex;
    flex-direction: column;
    gap: .8rem;
    position: fixed;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 800;
}

.k72-nav-dot {
    align-items: center;
    color: var(--k72-text-muted);
    display: flex;
    font-size: .75rem;
    height: 1.3rem;
    justify-content: center;
    position: relative;
    width: 1.3rem;
}

.k72-nav-dot::before {
    background: var(--k72-border-strong);
    border-radius: 50%;
    content: "";
    height: .55rem;
    width: .55rem;
}

.k72-nav-dot.active::before,
.k72-nav-dot:hover::before {
    background: var(--k72-primary);
    transform: scale(1.35);
}

.k72-nav-dot::after {
    background: var(--k72-surface-strong);
    border: 1px solid var(--k72-border);
    color: var(--k72-text);
    content: attr(data-tooltip);
    font-size: .75rem;
    opacity: 0;
    padding: .35rem .5rem;
    pointer-events: none;
    position: absolute;
    right: 1.8rem;
    white-space: nowrap;
}

.k72-nav-dot:hover::after,
.k72-nav-dot:focus-visible::after {
    opacity: 1;
}

.k72-hero {
    border-bottom: 1px solid var(--k72-border);
    min-height: min(640px, calc(100vh - 5rem));
    position: relative;
}

.k72-hero-background {
    background-color: var(--k72-canvas-raised);
    bottom: 0;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
}

.k72-hero-layout {
    align-items: center;
    display: grid;
    gap: 4rem;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr);
    min-height: inherit;
    padding-bottom: 5rem;
    padding-top: 5rem;
    position: relative;
}

.k72-eyebrow,
.k72-chapter {
    color: var(--k72-primary-strong);
    display: inline-flex;
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.k72-hero h1,
.k72-section-heading h2,
.k72-heritage-summary h2 {
    color: var(--k72-text);
    font-size: clamp(2.3rem, 5vw, 4.65rem);
    font-weight: 700;
    letter-spacing: -.045em;
    line-height: 1.02;
    margin: .85rem 0 1.25rem;
    max-width: 14ch;
}

.k72-hero-sample {
    color: var(--k72-primary-strong);
    font-weight: 700;
    margin-bottom: 1rem;
}

.k72-hero-description,
.k72-section-heading p {
    color: var(--k72-text-muted);
    font-size: 1.05rem;
    line-height: 1.75;
    max-width: 62ch;
}

.k72-hero-actions,
.k72-summary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 2rem;
}

.k72-button {
    align-items: center;
    border: 1px solid transparent;
    cursor: pointer;
    display: inline-flex;
    font-weight: 750;
    gap: .25rem;
    justify-content: center;
    min-height: 46px;
    padding: .65rem 1rem;
    text-decoration: none;
}

.k72-button-primary {
    background: var(--k72-primary);
    color: #061026 !important;
}

.k72-button-primary:hover {
    background: var(--k72-primary-strong);
}

.k72-button-secondary {
    background: transparent;
    border-color: var(--k72-border-strong);
    color: var(--k72-text) !important;
}

.k72-button-secondary:hover {
    background: var(--k72-surface-elevated);
}

.k72-hero-signal,
.k72-composition-panel,
.k72-atlas-card,
.k72-heritage-summary {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    box-shadow: 0 20px 50px rgba(0, 0, 0, .22);
}

.k72-hero-signal {
    border-top: 3px solid var(--k72-primary);
    display: flex;
    flex-direction: column;
    padding: 2rem;
}

.k72-hero-signal-label,
.k72-signal-card-region,
.k72-summary-stat-grid span {
    color: var(--k72-text-muted);
    font-size: .76rem;
    font-weight: 750;
    letter-spacing: .07em;
    text-transform: uppercase;
}

.k72-hero-signal-value {
    color: var(--k72-text);
    font-size: clamp(3rem, 5vw, 4.2rem);
    letter-spacing: -.06em;
    line-height: 1;
    margin-top: 1rem;
}

.k72-hero-signal-name {
    color: var(--k72-primary-strong);
    font-size: 1.15rem;
    margin-top: .5rem;
}

.k72-hero-metrics {
    border-top: 1px solid var(--k72-border);
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr 1fr;
    margin: 2rem 0 0;
    padding-top: 1.25rem;
}

.k72-hero-metrics dt {
    color: var(--k72-text-muted);
    font-size: .75rem;
    font-weight: 600;
}

.k72-hero-metrics dd {
    color: var(--k72-text);
    font-size: 1.35rem;
    font-weight: 750;
    margin: .25rem 0 0;
}

.k72-section {
    padding: clamp(4rem, 8vw, 7rem) 0;
    scroll-margin-top: 5rem;
}

.k72-section-data,
.k72-section-share,
.k72-section-summary {
    background: var(--k72-canvas-raised);
}

.k72-section-heading {
    margin-bottom: 2.25rem;
}

.k72-section-heading h2 {
    font-size: clamp(2rem, 3.5vw, 3.35rem);
    max-width: 18ch;
}

.k72-region-spectrum {
    display: grid;
    gap: .75rem;
    grid-template-columns: repeat(auto-fit, minmax(185px, 1fr));
    margin-bottom: 2rem;
}

.k72-spectrum-item {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    border-top: 3px solid var(--k72-region-color);
    min-width: 0;
    padding: 1rem;
}

.k72-spectrum-heading {
    display: flex;
    gap: 1rem;
    justify-content: space-between;
}

.k72-spectrum-heading span {
    color: var(--k72-text-muted);
    font-size: .85rem;
}

.k72-spectrum-heading strong {
    color: var(--k72-text);
}

.k72-spectrum-track,
.k72-component-bar {
    background: #0a1022;
    display: block;
    height: .45rem;
    margin-top: .8rem;
    overflow: hidden;
}

.k72-spectrum-track span {
    background: var(--k72-region-color);
    display: block;
    height: 100%;
    width: var(--k72-region-size);
}

.k72-signal-grid {
    display: grid;
    gap: 1px;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    margin-bottom: 2rem;
}

.k72-signal-card {
    background: var(--k72-surface-elevated);
    border-bottom: 3px solid var(--k72-region-color);
    display: flex;
    flex-direction: column;
    min-height: 155px;
    padding: 1rem;
}

.k72-signal-card strong {
    font-size: 2rem;
    letter-spacing: -.04em;
    line-height: 1;
    margin: auto 0 .4rem;
}

.k72-signal-card > span:last-child {
    color: var(--k72-text);
    font-size: .85rem;
    line-height: 1.35;
}

.k72-composition-panel {
    padding: clamp(1rem, 3vw, 2.25rem);
}

.k72-composition-panel-header {
    align-items: flex-end;
    border-bottom: 1px solid var(--k72-border);
    display: flex;
    gap: 2rem;
    justify-content: space-between;
    padding-bottom: 1.35rem;
}

.k72-composition-panel-header h3 {
    font-size: 1.7rem;
    margin: .45rem 0 0;
}

.k72-composition-panel-header p {
    color: var(--k72-text-muted);
    font-size: .875rem;
    margin: 0;
    text-align: right;
}

.k72-region-accordions {
    margin-top: 1rem;
}

.k72-region-accordion {
    border-bottom: 1px solid var(--k72-border);
}

.k72-region-accordion h4 {
    margin: 0;
}

.k72-region-toggle {
    align-items: center;
    background: transparent;
    border: 0;
    color: var(--k72-text);
    cursor: pointer;
    display: grid;
    font: inherit;
    font-weight: 750;
    grid-template-columns: 1fr auto 1.25rem;
    min-height: 60px;
    padding: .75rem 0;
    text-align: left;
    width: 100%;
}

.k72-region-toggle-name::before {
    background: var(--k72-region-color);
    content: "";
    display: inline-block;
    height: .65rem;
    margin-right: .65rem;
    width: .65rem;
}

.k72-region-toggle-total {
    color: var(--k72-primary-strong);
    padding-right: .8rem;
}

.k72-region-toggle .dna-icon {
    transition: transform .2s ease;
}

.k72-region-toggle[aria-expanded="true"] .dna-icon {
    transform: rotate(180deg);
}

.k72-region-panel {
    padding: 0 0 1rem;
}

.k72-region-rows {
    display: grid;
    gap: .5rem;
}

.k72-component-row {
    align-items: center;
    display: grid;
    gap: .75rem;
    grid-template-columns: .7rem minmax(160px, 1.1fr) minmax(130px, 2fr) 4.7rem;
    min-height: 35px;
}

.k72-component-marker {
    border-radius: 50%;
    height: .55rem;
    width: .55rem;
}

.k72-component-name,
.k72-component-row strong {
    font-size: .88rem;
}

.k72-component-row strong {
    color: var(--k72-primary-strong);
    text-align: right;
}

.k72-component-bar span {
    display: block;
    height: 100%;
}

.k72-show-all {
    background: transparent;
    border: 1px solid var(--k72-border-strong);
    color: var(--k72-primary-strong);
    cursor: pointer;
    font-weight: 750;
    margin-top: 1rem;
    min-height: 42px;
    padding: .55rem .8rem;
}

.k72-show-all:hover {
    background: var(--k72-surface-elevated);
    color: var(--k72-text);
}

.k72-atlas-card {
    overflow: hidden;
    padding: .75rem;
}

.k72-map {
    background: var(--k72-canvas);
    height: min(65vw, 590px);
    min-height: 360px;
}

.k72-atlas-card .leaflet-container {
    background: var(--k72-canvas);
    font: inherit;
}

.k72-atlas-card .leaflet-bar,
.k72-atlas-card .leaflet-control-zoom {
    border: 1px solid var(--k72-border);
    border-radius: 6px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, .28);
    overflow: hidden;
}

.k72-atlas-card .leaflet-bar a,
.k72-atlas-card .leaflet-control-zoom a {
    background: var(--k72-surface-elevated);
    border-bottom-color: var(--k72-border);
    color: var(--k72-text);
}

.k72-atlas-card .leaflet-bar a:hover,
.k72-atlas-card .leaflet-control-zoom a:hover {
    background: var(--k72-surface-strong);
    color: var(--k72-primary-strong);
}

.k72-atlas-card .leaflet-popup-content-wrapper,
.k72-atlas-card .leaflet-popup-tip {
    background: var(--k72-surface-elevated);
    border: 1px solid var(--k72-border);
    box-shadow: 0 10px 28px rgba(0, 0, 0, .35);
    color: var(--k72-text);
}

.k72-atlas-card .leaflet-popup-content {
    color: var(--k72-text);
    font-size: .9rem;
    line-height: 1.45;
    margin: .8rem 1rem;
}

.k72-atlas-card .leaflet-popup-close-button {
    color: var(--k72-text-muted) !important;
    font-size: 1.25rem;
}

.k72-atlas-card .leaflet-popup-close-button:hover {
    color: var(--k72-text) !important;
}

.k72-map-popup-region {
    color: var(--k72-text-muted);
    display: block;
    font-size: .78rem;
    margin-top: .2rem;
}

.k72-atlas-card .leaflet-tooltip {
    background: var(--k72-surface-strong);
    border: 1px solid var(--k72-border-strong);
    color: var(--k72-text);
    font-size: .78rem;
}

.k72-atlas-card .leaflet-tooltip-top::before {
    border-top-color: var(--k72-border-strong);
}

.k72-atlas-card .leaflet-control-attribution {
    background: rgba(8, 13, 29, .84);
    color: var(--k72-text-muted);
}

.k72-atlas-card .leaflet-control-attribution a {
    color: var(--k72-primary-strong);
}

.k72-atlas-legend {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    padding: .9rem .25rem .15rem;
}

.k72-atlas-legend-item {
    align-items: center;
    background: var(--k72-surface-elevated);
    border: 1px solid var(--k72-border);
    border-radius: 999px;
    color: var(--k72-text-muted);
    display: inline-flex;
    font-size: .78rem;
    gap: .4rem;
    padding: .3rem .55rem;
}

.k72-atlas-legend-swatch {
    border: 1px solid rgba(244, 247, 255, .7);
    border-radius: 50%;
    display: inline-block;
    height: .65rem;
    width: .65rem;
}

.k72-population-directory {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    margin-top: 1.25rem;
    padding: clamp(1rem, 3vw, 1.5rem);
}

.k72-population-directory-heading {
    align-items: flex-start;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.k72-population-directory-heading h3 {
    color: var(--k72-text);
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    margin: .25rem 0 .4rem;
}

.k72-population-directory-heading p {
    color: var(--k72-text-muted);
    margin: 0;
    max-width: 650px;
}

.k72-population-reference-count {
    background: var(--k72-surface-elevated);
    border: 1px solid var(--k72-border);
    color: var(--k72-primary-strong);
    flex: 0 0 auto;
    font-size: .82rem;
    font-weight: 700;
    padding: .45rem .65rem;
    white-space: nowrap;
}

.k72-population-search {
    background: var(--k72-canvas-raised);
    border: 1px solid var(--k72-border-strong);
    border-radius: 0;
    color: var(--k72-text);
    display: block;
    font: inherit;
    min-height: 46px;
    padding: .65rem .8rem;
    width: 100%;
}

.k72-population-search::placeholder {
    color: var(--k72-text-muted);
    opacity: 1;
}

.k72-population-search:focus {
    border-color: var(--k72-focus);
    box-shadow: 0 0 0 3px rgba(142, 172, 255, .2);
    outline: none;
}

.k72-population-directory-list {
    display: grid;
    gap: .75rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 1rem;
}

.k72-population-region {
    background: var(--k72-surface-elevated);
    border: 1px solid var(--k72-border);
    min-width: 0;
}

.k72-population-region summary {
    align-items: center;
    color: var(--k72-text);
    cursor: pointer;
    display: flex;
    font-weight: 700;
    gap: .75rem;
    justify-content: space-between;
    list-style: none;
    min-height: 46px;
    padding: .65rem .75rem;
}

.k72-population-region summary::-webkit-details-marker {
    display: none;
}

.k72-population-region summary::after {
    color: var(--k72-primary-strong);
    content: "+";
    font-size: 1.1rem;
    line-height: 1;
}

.k72-population-region[open] summary::after {
    content: "-";
}

.k72-population-region-name {
    align-items: center;
    display: inline-flex;
    gap: .45rem;
    min-width: 0;
}

.k72-population-region-name .k72-atlas-legend-swatch {
    flex: 0 0 auto;
}

.k72-population-region-count {
    color: var(--k72-text-muted);
    font-size: .8rem;
    margin-left: auto;
}

.k72-population-list {
    border-top: 1px solid var(--k72-border);
    list-style: none;
    margin: 0;
    max-height: 260px;
    overflow-y: auto;
    padding: 0;
}

.k72-population-list li {
    color: var(--k72-text-muted);
    font-size: .88rem;
    line-height: 1.35;
    padding: .55rem .75rem;
}

.k72-population-list li + li {
    border-top: 1px solid rgba(77, 99, 151, .32);
}

.k72-population-empty {
    color: var(--k72-text-muted);
    margin: 1rem 0 0;
}

.k72-map-fallback {
    color: var(--k72-text-muted);
    padding: 2rem;
    text-align: center;
}

.k72-main .ai-assistant-section {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    color: var(--k72-text);
}

.k72-main .ai-assistant-section h4,
.k72-main .ai-assistant-section .alert-light,
.k72-main .ai-assistant-section .sample-content,
.k72-main .ai-assistant-section .ai-results {
    color: var(--k72-text);
}

.k72-main .ai-assistant-section .alert-light,
.k72-main .ai-assistant-section .sample-content {
    background: var(--k72-canvas-raised);
    border-color: var(--k72-border);
}

.k72-disclosure-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.k72-disclosure {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    color: var(--k72-text);
}

.k72-disclosure summary {
    align-items: center;
    cursor: pointer;
    display: flex;
    font-weight: 700;
    gap: .25rem;
    justify-content: space-between;
    list-style: none;
    min-height: 60px;
    padding: 1rem;
}

.k72-disclosure summary::-webkit-details-marker {
    display: none;
}

.k72-disclosure summary .dna-icon:last-child {
    transition: transform .2s ease;
}

.k72-disclosure[open] summary .dna-icon:last-child {
    transform: rotate(180deg);
}

.k72-disclosure > div {
    border-top: 1px solid var(--k72-border);
    color: var(--k72-text-muted);
    font-size: .9rem;
    line-height: 1.65;
    padding: 1rem;
}

.k72-heritage-summary {
    border-top: 3px solid var(--k72-success);
    padding: clamp(1.5rem, 4vw, 3.5rem);
}

.k72-heritage-summary h2 {
    font-size: clamp(2rem, 3.7vw, 3.5rem);
    max-width: 16ch;
}

.k72-heritage-summary-header > p {
    color: var(--k72-text-muted);
}

.k72-summary-stat-grid {
    display: grid;
    gap: 1px;
    grid-template-columns: repeat(3, 1fr);
    margin: 2rem 0;
}

.k72-summary-stat-grid div {
    background: var(--k72-canvas-raised);
    display: flex;
    flex-direction: column;
    min-height: 105px;
    padding: 1rem;
}

.k72-summary-stat-grid strong {
    color: var(--k72-text);
    font-size: 1.3rem;
    margin-top: auto;
}

.k72-summary-signals {
    border-top: 1px solid var(--k72-border);
    list-style: none;
    margin: 0;
    max-width: 700px;
    padding: 0;
}

.k72-summary-signals li {
    border-bottom: 1px solid var(--k72-border);
    display: flex;
    justify-content: space-between;
    padding: .85rem 0;
}

.k72-summary-signals strong {
    color: var(--k72-primary-strong);
}

.k72-method-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, 1fr);
}

.k72-method-grid article {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    padding: 1.5rem;
}

.k72-method-grid .dna-icon {
    color: var(--k72-primary-strong);
    font-size: 1.5rem;
}

.k72-method-grid h3 {
    font-size: 1.15rem;
    margin: 1rem 0 .6rem;
}

.k72-method-grid p {
    color: var(--k72-text-muted);
    line-height: 1.65;
    margin: 0;
}

.k72-faqs {
    display: grid;
    gap: .75rem;
    margin-top: 2rem;
    max-width: 850px;
}

.k72-empty-state {
    align-items: center;
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    color: var(--k72-text-muted);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 3rem 1.5rem;
    text-align: center;
}

.k72-empty-state .dna-icon {
    color: var(--k72-primary-strong);
    font-size: 2rem;
}

.k72-empty-state h1 {
    color: var(--k72-text);
    font-size: 2rem;
}

.k72-state-section {
    min-height: calc(100vh - 7rem);
    padding: clamp(3rem, 8vw, 7rem) 0;
}

.k72-state-layout {
    align-items: center;
    display: grid;
    gap: clamp(2rem, 7vw, 7rem);
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .65fr);
}

.k72-state-layout h1 {
    font-size: clamp(2.4rem, 5vw, 4.6rem);
    letter-spacing: -.045em;
    line-height: 1.03;
    margin: .85rem 0 1.25rem;
    max-width: 12ch;
}

.k72-state-lead {
    color: var(--k72-text-muted);
    font-size: 1.1rem;
    line-height: 1.75;
    max-width: 58ch;
}

.k72-state-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 2rem;
}

.k72-processing-status {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    border-top: 3px solid var(--k72-primary);
    display: flex;
    flex-direction: column;
    padding: clamp(1.5rem, 3vw, 2.25rem);
}

.k72-processing-status > .dna-icon {
    color: var(--k72-primary-strong);
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.k72-processing-label {
    color: var(--k72-text-muted);
    font-size: .75rem;
    font-weight: 750;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.k72-processing-status > strong {
    color: var(--k72-text);
    font-size: 1.45rem;
    line-height: 1.25;
    margin-top: .35rem;
}

.k72-processing-status > p {
    color: var(--k72-text-muted);
    line-height: 1.65;
    margin: 1rem 0;
}

.k72-processing-status dl {
    border-top: 1px solid var(--k72-border);
    margin: .5rem 0 0;
    padding-top: .85rem;
}

.k72-processing-status dl div {
    display: flex;
    justify-content: space-between;
    padding: .35rem 0;
}

.k72-processing-status dt {
    color: var(--k72-text-muted);
    font-size: .85rem;
    font-weight: 500;
}

.k72-processing-status dd {
    color: var(--k72-text);
    font-size: .85rem;
    font-weight: 700;
    margin: 0;
    text-align: right;
}

.k72-refresh-note {
    border-top: 1px solid var(--k72-border);
    font-size: .82rem;
    margin-bottom: 0 !important;
    padding-top: 1rem;
}

.k72-mobile-nav {
    background: rgba(8, 13, 29, .96);
    border-top: 1px solid var(--k72-border);
    bottom: 0;
    display: none;
    grid-template-columns: repeat(4, 1fr);
    left: 0;
    padding-bottom: env(safe-area-inset-bottom);
    position: fixed;
    right: 0;
    z-index: 1000;
}

.k72-mobile-nav a {
    align-items: center;
    color: var(--k72-text-muted);
    display: flex;
    flex-direction: column;
    font-size: .68rem;
    gap: .25rem;
    justify-content: center;
    min-height: 56px;
    text-decoration: none;
}

.k72-mobile-nav a.active {
    color: var(--k72-primary-strong);
}

@media (max-width: 1200px) {
    .k72-page-nav {
        display: none;
    }
}

@media (max-width: 991.98px) {
    .k72-hero-layout {
        gap: 2rem;
        grid-template-columns: 1fr;
    }

    .k72-hero-signal {
        max-width: 520px;
    }

    .k72-signal-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .k72-disclosure-grid,
    .k72-method-grid,
    .k72-state-layout {
        grid-template-columns: 1fr;
    }

    .k72-population-directory-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767.98px) {
    .k72-main {
        padding-bottom: calc(64px + env(safe-area-inset-bottom));
    }

    .k72-mobile-nav {
        display: grid;
    }

    .k72-hero-layout {
        min-height: auto;
        padding-bottom: 3.5rem;
        padding-top: 3.5rem;
    }

    .k72-hero h1,
    .k72-section-heading h2,
    .k72-heritage-summary h2 {
        max-width: none;
    }

    .k72-hero-actions,
    .k72-summary-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .k72-hero-actions .k72-button,
    .k72-summary-actions .k72-button {
        width: 100%;
    }

    .k72-region-spectrum {
        grid-template-columns: 1fr 1fr;
    }

    .k72-signal-grid {
        grid-template-columns: 1fr 1fr;
    }

    .k72-composition-panel-header {
        align-items: flex-start;
        flex-direction: column;
        gap: .6rem;
    }

    .k72-composition-panel-header p {
        text-align: left;
    }

    .k72-component-row {
        gap: .45rem;
        grid-template-columns: .6rem minmax(0, 1fr) 4rem;
    }

    .k72-component-bar {
        grid-column: 2 / 4;
        margin: -.15rem 0 .35rem;
    }

    .k72-summary-stat-grid {
        grid-template-columns: 1fr;
    }

    .k72-map {
        height: 58vw;
        min-height: 300px;
    }

    .k72-population-directory-heading {
        flex-direction: column;
    }

    .k72-population-directory-list {
        grid-template-columns: 1fr;
    }

    .k72-state-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .k72-state-actions .k72-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .k72-region-toggle .dna-icon,
    .k72-disclosure summary .dna-icon,
    .k72-nav-dot::before {
        transition: none;
    }
}

/* =============================================
   Shared AI Assistant dark-theme overrides
   (wwwroot/css/shared/ai-assistant.css targets a light theme by default)
   ============================================= */

.k72-section-ai .ai-assistant-section {
    background: var(--k72-surface);
    border: 1px solid var(--k72-border);
    border-radius: 14px;
}

.k72-section-ai .ai-assistant-section h4 {
    color: var(--k72-text);
}

.k72-section-ai .ai-assistant-section h4 .dna-icon {
    color: var(--k72-primary-strong);
}

.k72-section-ai .ai-assistant-section small {
    color: var(--k72-text-muted);
}

.k72-section-ai .ai-assistant-section .badge-success {
    background: rgba(85, 200, 161, 0.18);
    color: var(--k72-success);
}

.k72-section-ai .ai-assistant-section .badge-warning {
    background: rgba(228, 184, 87, 0.18);
    color: var(--k72-warning);
}

.k72-section-ai .ai-assistant-section .alert-light {
    background: var(--k72-surface-elevated);
    border: 1px solid var(--k72-border);
    color: var(--k72-text-muted);
}

.k72-section-ai .ai-assistant-section .alert-light p,
.k72-section-ai .ai-assistant-section .alert-light .dna-icon {
    color: inherit;
}

.k72-section-ai .ai-assistant-section .suggested-prompts .btn-outline-primary {
    background: transparent;
    color: var(--k72-primary-strong);
    border-color: var(--k72-border-strong);
}

.k72-section-ai .ai-assistant-section .suggested-prompts .btn-outline-primary:hover {
    background: rgba(110, 139, 255, 0.16);
    color: var(--k72-text);
    border-color: var(--k72-primary);
}

.k72-section-ai .ai-assistant-section .btn-light {
    background: var(--k72-surface-elevated);
    color: var(--k72-text);
    border: 2px solid var(--k72-primary);
}

.k72-section-ai .ai-assistant-section .btn-light:hover {
    background: var(--k72-primary);
    color: var(--k72-canvas);
    border-color: var(--k72-primary);
}

.k72-section-ai .ai-results {
    background: var(--k72-surface-elevated);
    border: 1px solid var(--k72-border);
    color: var(--k72-text-muted);
}

.k72-section-ai .ai-results .ai-result-content,
.k72-section-ai .ai-results p,
.k72-section-ai .ai-results div,
.k72-section-ai .ai-results span,
.k72-section-ai .ai-results li {
    color: var(--k72-text-muted);
}

.k72-section-ai .ai-results h1,
.k72-section-ai .ai-results h2,
.k72-section-ai .ai-results h3,
.k72-section-ai .ai-results h4,
.k72-section-ai .ai-results strong {
    color: var(--k72-text);
}

.k72-section-ai .ai-results blockquote,
.k72-section-ai .ai-results .ai-result-content blockquote {
    background: rgba(110, 139, 255, 0.08);
    border-left: 4px solid var(--k72-primary);
    color: var(--k72-text-muted);
}

.k72-section-ai .ai-results code {
    background: rgba(0, 0, 0, 0.3);
    color: var(--k72-text-muted);
}

.k72-section-ai .ai-sample-output {
    background: var(--k72-surface-elevated);
    border: 2px solid var(--k72-border-strong);
}

.k72-section-ai .ai-sample-output h6 {
    color: var(--k72-primary-strong);
}

.k72-section-ai .ai-sample-output .sample-content,
.k72-section-ai .ai-sample-output .bg-light {
    background: rgba(255, 255, 255, 0.04) !important;
    border-color: var(--k72-border) !important;
    color: var(--k72-text-muted);
}

.k72-section-ai .custom-question-input .form-control {
    background: var(--k72-surface-elevated);
    border: 2px solid var(--k72-border-strong);
    color: var(--k72-text);
}

.k72-section-ai .custom-question-input .form-control::placeholder {
    color: var(--k72-text-muted);
}

@media print {
    .k72-page-nav,
    .k72-mobile-nav,
    .k72-scroll-progress,
    .k72-skip-link,
    .k72-hero-actions,
    .k72-summary-actions,
    .k72-section-ai,
    .k72-section-share {
        display: none !important;
    }

    .k72-main,
    .k72-section-data,
    .k72-section-summary,
    .k72-hero-background {
        background: #ffffff !important;
        color: #111827 !important;
    }

    .k72-main * {
        border-color: #cbd5e1 !important;
        color: #111827 !important;
    }

    .k72-region-panel[hidden] {
        display: block !important;
    }
}