/*
 * RUDI compatibility layer
 *
 * Older articles, tools, and legal pages keep their content-specific layout,
 * while this file gives them the same palette, navigation, typography, and
 * footer identity as the current RUDI site.
 */

:root {
    --rudi-ink: #15151a;
    --rudi-ink-soft: #30313a;
    --rudi-paper: #f6f6f2;
    --rudi-paper-deep: #e9eae5;
    --rudi-white: #ffffff;
    --rudi-accent: #4355d8;
    --rudi-accent-dark: #2e3aa0;
    --rudi-accent-soft: #c8cefa;
    --rudi-teal: #1f7f79;
    --rudi-moss: #345c4d;
    --rudi-sage: #dde8e1;
    --rudi-sky: #dce8f3;
    --rudi-coral: #d95f49;
    --rudi-gold: #d3a62c;
    --rudi-violet: #7657c9;
    --rudi-magenta: #b95b91;
    --rudi-line: rgba(21, 21, 26, 0.16);
    --rudi-muted: #646671;
    --rudi-display: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --rudi-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

    /* Aliases used by the standalone page generations. */
    --ink: var(--rudi-ink);
    --text: var(--rudi-ink-soft);
    --paper: var(--rudi-paper);
    --line: var(--rudi-line);
    --muted: var(--rudi-muted);
    --gray-900: var(--rudi-ink);
    --gray-800: #25262d;
    --gray-700: #3d3f49;
    --gray-600: #565864;
    --gray-500: var(--rudi-muted);
    --gray-400: #8c8e98;
    --gray-300: #b6b8c0;
    --gray-200: #d1d2d3;
    --gray-100: var(--rudi-paper-deep);
    --gray-50: var(--rudi-paper);
    --white: var(--rudi-white);
    --accent: var(--rudi-accent);
    --accent-dark: var(--rudi-accent-dark);
    --accent-soft: var(--rudi-accent-soft);
    --terracotta: var(--rudi-accent);
    --terracotta-dark: var(--rudi-accent-dark);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
}

body {
    font-family: var(--rudi-display);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

:focus-visible {
    outline: 3px solid var(--rudi-accent);
    outline-offset: 4px;
}

.nav {
    background: rgba(246, 246, 242, 0.94);
    border-bottom-color: var(--rudi-line);
    backdrop-filter: blur(18px);
}

.nav-inner {
    width: min(100%, 1288px);
    min-height: 76px;
    height: auto;
    padding: 0 24px;
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--rudi-ink);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    text-decoration: none;
}

.nav-logo::before {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: 50%;
    background: var(--rudi-accent);
    color: var(--rudi-white);
    content: "R";
    font-family: var(--rudi-mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0;
}

.nav-links {
    align-items: center;
    gap: clamp(0.75rem, 1.45vw, 1.45rem);
}

.nav-links a {
    color: var(--rudi-ink-soft);
    font-size: 0.84rem;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active,
.nav-links a[aria-current="page"] {
    color: var(--rudi-accent-dark);
}

.nav-links a.nav-action {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    padding: 0.68rem 1rem;
    border: 1px solid var(--rudi-ink);
    border-radius: 999px;
    background: var(--rudi-ink);
    color: var(--rudi-white);
    font-weight: 600;
    line-height: 1;
}

.nav-links a.nav-action::after {
    display: none;
}

.nav-links a.nav-action:hover {
    border-color: var(--rudi-accent);
    background: var(--rudi-accent);
    color: var(--rudi-white);
}

.nav-toggle {
    border-color: var(--rudi-line);
    border-radius: 50%;
}

.nav-toggle span {
    background: var(--rudi-ink);
}

.mobile-menu {
    background: var(--rudi-paper);
}

.mobile-menu a {
    color: var(--rudi-ink);
    text-transform: none;
}

.mobile-menu a:hover,
.mobile-menu a.active,
.mobile-menu a[aria-current="page"] {
    color: var(--rudi-accent-dark);
}

.mobile-menu .mobile-cta-link {
    margin-bottom: 0.75rem;
    padding: 0.9rem 1rem;
    border-radius: 999px;
    background: var(--rudi-ink);
    color: var(--rudi-white);
    text-align: center;
}

.hero-label,
.article-label,
.section-label,
.eyebrow,
.kicker,
.overline {
    color: var(--rudi-accent);
    font-family: var(--rudi-mono);
}

.btn-primary,
.button-primary,
.cta-button,
.submit-btn {
    background: var(--rudi-accent);
    color: var(--rudi-white);
}

.btn-primary:hover,
.button-primary:hover,
.cta-button:hover,
.submit-btn:hover {
    background: var(--rudi-accent-dark);
}

.policy-note,
.insight,
.callout,
blockquote {
    border-top-color: var(--rudi-accent);
}

footer,
.footer {
    background: var(--rudi-ink);
    color: #d8d9df;
}

footer a,
.footer a,
.footer-inner a {
    color: #d8d9df;
}

footer a:hover,
.footer a:hover,
.footer-inner a:hover {
    color: var(--rudi-accent-soft);
}

footer strong,
.footer h4 {
    color: var(--rudi-white);
}

.newsletter-cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 2rem;
    margin: 4rem 0 2rem;
    padding: clamp(2rem, 5vw, 3.5rem);
    border-radius: 18px;
    background: var(--rudi-accent);
    color: var(--rudi-white);
}

.newsletter-cta h2 {
    margin: 0.25rem 0 0.75rem;
    color: var(--rudi-white);
}

.newsletter-cta p {
    max-width: 720px;
    margin: 0;
    color: rgba(255, 255, 255, 0.82);
}

.newsletter-cta-label {
    font-family: var(--rudi-mono);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.newsletter-cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.8rem 1.2rem;
    border-radius: 999px;
    background: var(--rudi-white);
    color: var(--rudi-ink);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}

.newsletter-cta-button:hover {
    background: var(--rudi-accent-soft);
    color: var(--rudi-ink);
}

@media (max-width: 1120px) {
    .nav-links {
        gap: 0.75rem;
    }

    .nav-links a {
        font-size: 0.76rem;
    }

    .nav-links a.nav-action {
        padding-inline: 0.8rem;
    }
}

@media (max-width: 900px) {
    .nav-inner {
        min-height: 72px;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .newsletter-cta {
        grid-template-columns: 1fr;
        align-items: start;
    }
}