/* Ocean Sentinel DS: public layout classes use the os-* prefix. */
:root {
    /* Design System V2 tokens documented in DESIGN_SYSTEM_V2.md. */
    --os-brand-primary: #0066cc;
    --os-brand-secondary: #00a3e0;
    --os-brand-dark: #003d7a;
    --os-neutral-50: #f8fafc;
    --os-neutral-100: #f1f5f9;
    --os-neutral-200: #e2e8f0;
    --os-neutral-300: #cbd5e1;
    --os-neutral-400: #94a3b8;
    --os-neutral-500: #64748b;
    --os-neutral-600: #475569;
    --os-neutral-700: #334155;
    --os-neutral-800: #1e293b;
    --os-neutral-900: #0f172a;
    --os-critical-500: #ef4444;
    --os-critical-600: #dc2626;
    --os-high-500: #f97316;
    --os-high-600: #ea580c;
    --os-attention-500: #eab308;
    --os-attention-600: #ca8a04;
    --os-normal-500: #22c55e;
    --os-normal-600: #16a34a;
    --os-info-500: #3b82f6;
    --os-info-600: #2563eb;
    --os-warning-500: #f59e0b;
    --os-warning-600: #d97706;
    --os-error-500: #ef4444;
    --os-error-600: #dc2626;
    --os-space-2: 0.5rem;
    --os-space-3: 0.75rem;
    --os-space-4: 1rem;
    --os-space-5: 1.25rem;
    --os-space-6: 1.5rem;
    --os-space-8: 2rem;
    --os-space-10: 2.5rem;
    --os-space-12: 3rem;
    --os-leading-tight: 1.25;
    --os-leading-normal: 1.5;
    --os-leading-relaxed: 1.75;

    /* Active public aliases. Keep legacy names stable while mapping them to V2 intent. */
    --ink: var(--os-neutral-50);
    --muted: var(--os-neutral-300);
    --panel: rgba(30, 41, 59, 0.84);
    --panel-soft: rgba(51, 65, 85, 0.72);
    --line: rgba(141, 200, 216, 0.28);
    --accent: var(--os-brand-secondary);
    --accent-strong: var(--os-warning-500);
    --base: var(--os-neutral-900);
    --deep: var(--os-neutral-800);
    --radius: 8px;
    --space-section: clamp(24px, 4vw, 32px);
}

* {
    box-sizing: border-box;
}

html {
    background: var(--base);
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.98), rgba(30, 41, 59, 0.94));
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
}

a {
    color: inherit;
}

a,
button,
select,
.os-btn,
.os-topnav__link,
.os-footer-links a,
.os-footer-contact a,
.pilat-shadow-button {
    min-width: 24px;
    min-height: 24px;
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
.os-btn:focus-visible,
.os-topnav__link:focus-visible,
.os-footer-links a:focus-visible,
.os-footer-contact a:focus-visible,
.pilat-shadow-button:focus-visible {
    outline: 3px solid var(--os-warning-500);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.2);
}

.os-container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0 16px;
}

.os-hero,
.os-page-header,
.os-section,
.os-feature-card,
.os-metric-card,
.os-route-card {
    background: linear-gradient(150deg, var(--panel), var(--panel-soft));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
}

.os-hero {
    padding: clamp(32px, 6vw, 64px);
    margin: 32px 0;
}

.os-page-header {
    padding: clamp(32px, 5vw, 48px);
    margin: 32px 0 24px;
}

.os-eyebrow {
    margin: 0 0 16px;
    color: var(--accent);
    font-size: 0.875rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    overflow-wrap: anywhere;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(2rem, 6vw, 4.6rem);
    line-height: 1;
}

h2 {
    margin: 0 0 16px;
    font-size: clamp(1.35rem, 3vw, 2rem);
    line-height: 1.15;
}

h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
}

.os-subtitle,
.os-page-subtitle {
    margin: 0 0 16px;
    color: var(--muted);
    font-size: clamp(1.05rem, 2.5vw, 1.45rem);
}

.os-description,
.os-section p,
.os-feature-text,
.os-route-card p,
.os-metric-card p {
    color: var(--muted);
}

.os-description {
    max-width: 820px;
    margin: 0 0 32px;
    font-size: 1.05rem;
}

.os-cta-buttons,
.os-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.os-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 8px 24px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink);
    text-decoration: none;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.08);
}

.os-btn-primary {
    background: #0f766e;
    border-color: rgba(127, 211, 198, 0.72);
}

.os-btn-secondary {
    background: rgba(245, 158, 11, 0.24);
    border-color: rgba(245, 158, 11, 0.72);
}

.os-features,
.os-grid,
.os-metrics,
.os-route-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin: 24px 0;
}

.os-feature-card,
.os-metric-card,
.os-route-card,
.os-section {
    padding: 24px;
}

.os-feature-icon,
.os-metric-value {
    color: var(--accent-strong);
    font-size: 1.9rem;
    font-weight: 900;
    line-height: 1;
}

.os-feature-title {
    margin-top: 16px;
}

.os-section {
    margin-bottom: 16px;
}

.os-section--quiet {
    background: rgba(8, 30, 45, 0.52);
    box-shadow: none;
}

.os-section ul {
    margin: 16px 0 0;
    padding-left: 24px;
    color: var(--muted);
}

.os-section li {
    margin: 8px 0;
}

.os-badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0 0;
}

.os-badge {
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink);
    background: rgba(127, 211, 198, 0.12);
    min-height: 32px;
    padding: 8px 12px;
    font-size: 0.875rem;
    font-weight: 700;
    line-height: var(--os-leading-normal);
}

.os-scientific-badge,
.os-badge[truth_status],
.os-badge[shadow_mode],
.os-badge[alert_allowed],
.os-badge[decision_ready],
.pilat-badge--shadow,
.pilat-badge--guard {
    border-color: rgba(240, 195, 90, 0.62) !important;
    color: var(--os-neutral-50) !important;
    background: rgba(245, 158, 11, 0.24) !important;
}

.os-badge[truth_status="SCENARIO"],
.os-scientific-badge--scenario {
    border-color: rgba(127, 211, 198, 0.72);
    color: var(--ink);
    background: rgba(127, 211, 198, 0.16);
}

.os-badge[shadow_mode="true"],
.os-scientific-badge--shadow {
    border-color: rgba(0, 163, 224, 0.64);
    background: rgba(0, 163, 224, 0.16);
}

.pilat-badge--shadow {
    border-color: rgba(0, 163, 224, 0.64) !important;
    background: rgba(0, 163, 224, 0.2) !important;
}

.os-badge[alert_allowed="false"],
.os-badge[decision_ready="false"],
.os-scientific-badge--restricted {
    border-color: rgba(245, 158, 11, 0.78);
    background: rgba(245, 158, 11, 0.24);
}

.os-notice {
    border-left: 4px solid var(--accent-strong);
    background: rgba(240, 195, 90, 0.12);
    padding: 16px;
    border-radius: var(--radius);
}

.pilat-doctrine-banner {
    border: 1px solid var(--line);
    border-left: 4px solid var(--accent-strong);
    border-radius: var(--radius);
    background: rgba(15, 23, 42, 0.48);
    padding: 24px;
    margin: 0 0 24px;
}

.pilat-doctrine-banner h2 {
    margin: 0 0 8px;
    color: var(--ink);
    font-size: clamp(1.2rem, 2vw, 1.75rem);
    letter-spacing: 0;
}

.pilat-doctrine-banner p {
    margin: 0;
    color: var(--muted);
}

.pilat-reading-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    gap: 32px;
    align-items: start;
}

.pilat-reading-main {
    display: grid;
    gap: 24px;
    min-width: 0;
}

.pilat-guided-section,
.pilat-disclosure-section,
.pilat-next-actions {
    display: grid;
    gap: 24px;
}

.pilat-main-message {
    max-width: 760px;
    color: var(--ink);
    font-size: clamp(1.25rem, 2vw, 1.55rem);
    line-height: var(--os-leading-normal);
    font-weight: 800;
}

.pilat-reading-list,
.pilat-primary-variables {
    margin: 0;
    padding-left: 24px;
}

.pilat-reading-list li,
.pilat-primary-variables li {
    margin: 8px 0;
    color: var(--muted);
}

.pilat-primary-variables {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    padding-left: 0;
    list-style: none;
}

.pilat-primary-variables li {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(15, 23, 42, 0.42);
    padding: 16px;
}

.pilat-primary-variables strong,
.pilat-primary-variables span {
    display: block;
}

.pilat-primary-variables strong {
    margin-bottom: 8px;
    color: var(--ink);
}

.pilat-proof-rail {
    position: sticky;
    top: 96px;
    display: grid;
    gap: 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(15, 23, 42, 0.48);
    padding: 24px;
}

.pilat-proof-rail h2 {
    margin: 0;
}

.pilat-proof-list {
    display: grid;
    gap: 16px;
    margin: 0;
}

.pilat-proof-list div {
    display: grid;
    gap: 4px;
}

.pilat-proof-list dt {
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 800;
}

.pilat-proof-list dd {
    margin: 0;
    color: var(--ink);
    font-weight: 900;
}

.pilat-proof-details {
    background: rgba(15, 23, 42, 0.34);
}

.os-disclosure {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(15, 23, 42, 0.42);
    padding: 0;
}

.os-disclosure + .os-disclosure {
    margin-top: 16px;
}

.os-disclosure summary {
    min-height: 48px;
    cursor: pointer;
    padding: 16px 24px;
    color: var(--ink);
    font-weight: 900;
    line-height: var(--os-leading-normal);
}

.os-disclosure summary:focus-visible {
    outline: 3px solid var(--os-warning-500);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.2);
}

.os-disclosure p,
.os-disclosure ul {
    margin: 0;
    padding: 0 24px 16px;
}

.os-disclosure ul {
    padding-left: 48px;
}

.os-disclosure li {
    margin: 8px 0;
    color: var(--muted);
}

@media (max-width: 900px) {
    .pilat-reading-layout {
        grid-template-columns: 1fr;
    }

    .pilat-proof-rail {
        position: static;
    }
}

@media (max-width: 640px) {
    .pilat-primary-variables {
        grid-template-columns: 1fr;
    }
}

.os-contact-grid,
.os-email-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(256px, 1fr));
    gap: 24px;
    margin: 24px 0;
}

.os-contact-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    padding: 24px;
}

.os-contact-card p {
    color: var(--muted);
}

.os-field-placeholder {
    min-height: 44px;
    border: 1px dashed rgba(141, 200, 216, 0.42);
    border-radius: var(--radius);
    color: var(--muted);
    background: rgba(0, 0, 0, 0.16);
    padding: 12px;
}

.os-footer-standard {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 560px);
    gap: 24px;
    align-items: start;
}

.os-footer-unified {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 560px);
    gap: 24px;
    align-items: start;
}

.os-footer-doctrine h2 {
    margin: 0 0 8px;
    color: var(--ink);
    font-size: 1.05rem;
}

.os-footer-links,
.os-footer-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
}

.os-footer-links {
    justify-content: flex-end;
}

.os-footer-links a,
.os-footer-contact a {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 4px 0;
    color: var(--muted);
    text-decoration: none;
    font-weight: 800;
}

.os-footer-links a:hover,
.os-footer-contact a:hover {
    color: var(--ink);
}

.os-email-signature {
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    background: rgba(127, 211, 198, 0.1);
    padding: 16px;
    color: var(--muted);
}

.os-table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    color: var(--muted);
}

th,
td {
    padding: 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--ink);
}

code {
    color: var(--os-neutral-50);
    background: rgba(15, 23, 42, 0.72);
    border-radius: 6px;
    padding: 4px 8px;
}

footer {
    margin-top: 42px;
    border-top: 1px solid var(--line);
    background: rgba(5, 16, 25, 0.9);
}

.os-footer-content {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 24px 0;
    color: var(--muted);
}

.os-footer-content p {
    margin: 6px 0;
}

@media (max-width: 680px) {
    .os-container {
        width: min(100% - 24px, 1120px);
        padding-top: 16px;
    }

        .os-hero,
        .os-page-header,
        .os-section,
        .os-feature-card,
        .os-metric-card,
    .os-route-card {
        padding: 24px;
    }

    .os-footer-standard {
        grid-template-columns: 1fr;
    }

    .os-footer-unified {
        grid-template-columns: 1fr;
    }

    .os-footer-links {
        justify-content: flex-start;
    }
}

body[data-route="/"] {
    --type-bump: 0.3125rem;
    --home-max-width: 1360px;
    --home-gutter: clamp(24px, 4vw, 56px);
    --home-section-gap: clamp(48px, 6vw, 80px);
    --home-card-padding: clamp(24px, 3vw, 40px);
    font-size: calc(1rem + var(--type-bump));
}

body[data-route="/"] .os-container {
    width: min(var(--home-max-width), calc(100% - var(--home-gutter)));
    padding-top: clamp(24px, 3vw, 40px);
    padding-bottom: clamp(32px, 5vw, 72px);
}

body[data-route="/"] .os-public-hero,
body[data-route="/"] .os-two-column,
body[data-route="/"] .pilat-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
}

body[data-route="/"] .os-public-hero {
    grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.75fr);
}

body[data-route="/"] .os-intro-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(18px, 2.5vw, 32px);
}

body[data-route="/"] .os-metrics,
body[data-route="/"] .pilat-scenario-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

body[data-route="/"] .os-section,
body[data-route="/"] .os-grid.os-two-column,
body[data-route="/"] .pilat-panel,
body[data-route="/"] .pilat-scenarios,
body[data-route="/"] .pilat-explainable {
    margin: 0 0 var(--home-section-gap);
}

body[data-route="/"] .os-hero.os-public-hero {
    margin: 0 0 var(--home-section-gap);
}

body[data-route="/"] .os-home-heading {
    max-width: 940px;
    margin-bottom: clamp(24px, 3vw, 32px);
}

body[data-route="/"] .os-intro-card,
body[data-route="/"] .os-public-hero__panel,
body[data-route="/"] .os-social-panel,
body[data-route="/"] .pilat-block,
body[data-route="/"] .pilat-scenario-card,
body[data-route="/"] .pilat-control-panel,
body[data-route="/"] .pilat-result-panel,
body[data-route="/"] .pilat-limit-box {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    padding: var(--home-card-padding);
}

body[data-route="/"] .os-kpi {
    color: var(--accent-strong);
    font-size: clamp(2rem, 4vw, 2.85rem);
    font-weight: 760;
    line-height: 1;
}

body[data-route="/"] .os-small-text {
    color: var(--muted);
}

body[data-route="/"] .os-level-list,
body[data-route="/"] .os-social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
}

body[data-route="/"] .os-social-links a {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 4px 0;
    color: var(--muted);
    text-decoration: none;
    font-weight: 800;
}

body[data-route="/"] .os-social-links a:hover,
body[data-route="/"] .os-social-links a:focus-visible {
    color: var(--ink);
    text-decoration: underline;
}

body[data-route="/"] .pilat-explainable {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    max-width: 100%;
    align-items: start;
}

body[data-route="/"] .pilat-explainable > * {
    min-width: 0;
}

body[data-route="/"] .pilat-explainable .pilat-control-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    align-items: end;
}

body[data-route="/"] .pilat-explainable .pilat-result-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 100%;
    align-items: start;
}

body[data-route="/"] .pilat-result-panel > h3,
body[data-route="/"] .pilat-result-panel > .pilat-result-summary,
body[data-route="/"] .pilat-result-panel > .pilat-status-row,
body[data-route="/"] .pilat-result-panel > .pilat-result-hero,
body[data-route="/"] .pilat-result-panel > .pilat-result-narrative {
    grid-column: 1 / -1;
}

body[data-route="/"] .pilat-result-hero {
    display: grid;
    gap: 12px;
    min-width: 0;
    max-width: 960px;
}

body[data-route="/"] .pilat-result-hero h3 {
    margin: 0;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    line-height: 1.2;
}

body[data-route="/"] .pilat-result-hero .pilat-result-summary {
    margin: 0;
    color: var(--ink);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    line-height: 1.6;
}

body[data-route="/"] .pilat-result-narrative {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

body[data-route="/"] .pilat-narrative-card {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(15, 23, 42, 0.42);
    padding: 24px;
    overflow-wrap: anywhere;
}

body[data-route="/"] .pilat-narrative-card h4 {
    margin: 0 0 8px;
    color: var(--accent-strong);
    font-size: 1rem;
    line-height: 1.3;
}

body[data-route="/"] .pilat-narrative-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

body[data-route="/"] .pilat-explainable-grid,
body[data-route="/"] .pilat-result-variables,
body[data-route="/"] .pilat-result-factors,
body[data-route="/"] .pilat-result-review {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 100%;
}

body[data-route="/"] .pilat-explainable .pilat-block,
body[data-route="/"] .pilat-explainable .pilat-control-panel,
body[data-route="/"] .pilat-explainable .pilat-result-panel,
body[data-route="/"] .pilat-explainable .pilat-limit-box,
body[data-route="/"] .pilat-explainable .pilat-factor-list,
body[data-route="/"] .pilat-explainable .pilat-review-list,
body[data-route="/"] .pilat-explainable .pilat-factor-list li,
body[data-route="/"] .pilat-explainable .pilat-review-list li,
body[data-route="/"] .pilat-result-hero,
body[data-route="/"] .pilat-result-narrative,
body[data-route="/"] .pilat-narrative-card {
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: normal;
}

@media (max-width: 980px) {
    body[data-route="/"] .os-public-hero,
    body[data-route="/"] .pilat-panel,
    body[data-route="/"] .pilat-explainable .pilat-control-panel,
    body[data-route="/"] .pilat-explainable .pilat-result-panel {
        grid-template-columns: 1fr;
    }

    body[data-route="/"] .os-intro-grid,
    body[data-route="/"] .os-metrics,
    body[data-route="/"] .pilat-scenario-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 680px) {
    body[data-route="/"] .os-intro-grid,
    body[data-route="/"] .os-two-column,
    body[data-route="/"] .os-metrics,
    body[data-route="/"] .pilat-scenario-grid,
    body[data-route="/"] .pilat-explainable-grid {
        grid-template-columns: 1fr;
    }

    body[data-route="/"] .os-container {
        width: min(100% - 28px, var(--home-max-width));
    }
}