/*
 * Eternal Fund — main stylesheet
 *
 * Design language follows the audit in design-audit/design-audit.md:
 *   - Instrument Serif for headings, Newsreader for body.
 *   - Strict monochrome palette: white, near-black, black, off-white, light gray.
 *   - Pill-shaped buttons and form inputs.
 *   - Full-width, generous-whitespace editorial layout.
 *   - Responsive breakpoints at 980px and 680px.
 */

:root {
    /* Typography */
    --font-heading: "Instrument Serif", Georgia, "Times New Roman", serif;
    --font-body: "Newsreader", Georgia, "Times New Roman", serif;
    --font-system: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* Color palette (from the design audit) */
    --color-bg: #ffffff;
    --color-body: #1c1c1c;
    --color-black: #000000;
    --color-off-white: #fafafa;
    --color-line: #dcdcdc;
    --color-muted: rgba(0, 0, 0, 0.5);

    /* Type scale (from the audit's Wagtail CSS variables) */
    --text-h1: 4rem;
    --text-h2: 2.8rem;
    --text-h3: 2.2rem;
    --text-h4: 1.6rem;
    --text-large: 1.4rem;
    --text-base: 17px;

    /* Layout */
    --measure: 2000px;
    --gutter: clamp(18px, 6vw, 84px);
    --section-pad-y: clamp(40px, 6vw, 80px);

    /* Components */
    --btn-radius: 999px;
    --btn-height: 48px;
    --field-radius: 999px;
    --field-border: 1px solid var(--color-body);
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    color: var(--color-body);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

main {
    flex: 1 0 auto;
}

a {
    color: inherit;
    text-decoration: none;
}

h1,
h2,
h3,
h4,
p {
    margin: 0;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.02em;
}


/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px var(--gutter);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-line);
}

.site-header__brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: -0.01em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: clamp(16px, 3vw, 36px);
    font-size: 1rem;
}

.site-nav__link {
    position: relative;
    padding: 4px 0;
}

.site-nav__link:hover {
    color: var(--color-black);
}

.site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--color-black);
    transition: width 160ms ease;
}

.site-nav__link:hover::after {
    width: 100%;
}


/* ---------- Buttons ---------- */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 56px;
    padding: 0 36px;
    border: 1px solid var(--color-black);
    border-radius: var(--btn-radius);
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.button--primary {
    background: var(--color-black);
    color: var(--color-bg);
}

.button--primary:hover {
    transform: translateY(-1px);
    background: var(--color-body);
}

.button:focus-visible {
    outline: 2px solid var(--color-black);
    outline-offset: 2px;
}

.section--contact .button:focus-visible {
    outline-color: var(--color-bg);
}

.button:active {
    transform: translateY(0);
}


/* ---------- Layout primitives ---------- */

.section {
    padding: var(--section-pad-y) var(--gutter);
    border-top: 1px solid var(--color-line);
}

.section--prose {
    max-width: 760px;
    margin: 0 auto;
}

.section--prose-wide {
    max-width: 980px;
    margin: 0 auto;
}

.section--prose-narrow {
    max-width: 780px;
    margin: 0 auto;
}

.section--compact {
    padding-top: clamp(32px, 5vw, 56px);
    padding-bottom: clamp(32px, 5vw, 56px);
}

.section--edge {
    background: var(--color-off-white);
}

.section--contact {
    background: var(--color-black);
    color: var(--color-bg);
}

.section__heading {
    font-size: var(--text-h2);
    margin-bottom: clamp(24px, 4vw, 48px);
    max-width: 920px;
}

.section__heading--light {
    color: var(--color-bg);
}

.section__intro {
    font-size: var(--text-large);
    color: var(--color-muted);
    margin-bottom: 32px;
}

.eyebrow {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
}

.eyebrow--light {
    color: var(--color-line);
}

.section__heading--small {
    font-size: var(--text-h4);
    color: var(--color-muted);
    max-width: 720px;
    margin-bottom: clamp(24px, 4vw, 40px);
}


/* ---------- Hero ---------- */

.hero {
    min-height: auto;
    padding: clamp(56px, 10vw, 120px) var(--gutter) clamp(48px, 8vw, 80px);
}

.hero__layout {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: clamp(32px, 6vw, 80px);
    align-items: center;
    max-width: var(--measure);
    margin: 0 auto;
}

.hero__copy {
    max-width: 620px;
}

.hero__title {
    font-size: clamp(2.8rem, 6.5vw, 5.5rem);
    line-height: 0.98;
    margin-bottom: 28px;
}

.hero__subtitle {
    max-width: 560px;
    font-size: clamp(1.2rem, 1.9vw, 1.55rem);
    line-height: 1.45;
    color: var(--color-body);
    margin-bottom: 32px;
}

.hero__subtitle p + p {
    margin-top: 1em;
}

.hero__media {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero__image {
    width: 100%;
    max-width: 460px;
    height: auto;
    display: block;
    border-radius: 4px;
}

.hero__caption {
    margin-top: 12px;
    font-size: 0.95rem;
    color: var(--color-muted);
    text-align: left;
}

.hero__manifesto {
    margin: clamp(20px, 3vw, 28px) 0 0;
    padding: 0;
    border: 0;
    font-family: var(--font-heading);
    font-size: clamp(1.3rem, 2vw, 1.7rem);
    line-height: 1.35;
    text-align: left;
    color: var(--color-body);
}

.hero__latest {
    display: block;
    width: max-content;
    max-width: 100%;
    margin: 48px 0 0;
    padding: 0;
    color: var(--color-muted);
    text-decoration: none;
    transition: color 160ms ease;
}

.hero__latest:hover,
.hero__latest:focus-visible {
    color: var(--color-black);
    outline: none;
}

.hero__latest-eyebrow {
    display: block;
    margin-bottom: 6px;
    font-family: var(--font-body);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
    opacity: 0.65;
}

.hero__latest-title {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    line-height: 1.3;
    color: var(--color-body);
}

.hero__latest-arrow {
    font-family: var(--font-heading);
    font-size: 0.95em;
    transition: transform 200ms ease;
    display: inline-block;
    color: var(--color-muted);
}

.hero__latest:hover .hero__latest-title,
.hero__latest:focus-visible .hero__latest-title {
    color: var(--color-black);
}

.hero__latest:hover .hero__latest-arrow,
.hero__latest:focus-visible .hero__latest-arrow {
    transform: translateX(4px);
    color: var(--color-black);
}

.hero__latest-intro {
    display: block;
    margin-top: 2px;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-muted);
    max-width: 56ch;
    opacity: 0.85;
}

.hero__manifesto p {
    margin: 0;
}


/* ---------- Stream content ---------- */

.stream-content > * + * {
    margin-top: 1.75em;
}

.stream-content--light {
    color: var(--color-line);
}

.block-heading {
    font-family: var(--font-heading);
    font-size: var(--text-h3);
    margin-top: 2em;
    margin-bottom: 0.6em;
}

.block-paragraph {
    font-size: 1.12rem;
    line-height: 1.65;
}

.block-paragraph :where(p, ul, ol) {
    margin: 0 0 1em;
}

.block-paragraph :where(h3, h4) {
    font-family: var(--font-heading);
    font-weight: 400;
    margin-top: 1.5em;
    margin-bottom: 0.4em;
}

.block-quote {
    margin: 2.5em 0;
    padding: 0 0 0 1.5em;
    border-left: 3px solid var(--color-black);
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    line-height: 1.3;
    font-style: italic;
}

.block-quote cite {
    display: block;
    margin-top: 0.75em;
    font-size: 0.85em;
    font-style: normal;
    color: var(--color-muted);
}

.block-image {
    margin: 2.5em 0;
}

.block-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
}

.block-image figcaption {
    margin-top: 0.75em;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.block-embed {
    margin: 2.5em 0;
}

.block-embed iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: 4px;
}


/* ---------- Tables (Wagtail TableBlock) ---------- */

.block-table,
.stream-content table {
    width: 100%;
    margin: 2.5em 0;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 1rem;
    line-height: 1.5;
    border: 1px solid var(--color-line);
    border-radius: 8px;
    overflow: hidden;
}

.block-table caption,
.stream-content table caption {
    caption-side: top;
    margin-bottom: 0.75em;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-muted);
    text-align: left;
}

.block-table thead,
.stream-content table thead {
    background: var(--color-off-white);
    border-bottom: 1px solid var(--color-line);
}

.block-table th,
.stream-content table th {
    font-family: var(--font-heading);
    font-weight: 400;
    font-size: 1.05rem;
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--color-line);
}

.block-table td,
.stream-content table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-line);
    vertical-align: top;
}

.block-table tbody tr:last-child td,
.block-table tbody tr:last-child th,
.stream-content table tbody tr:last-child td,
.stream-content table tbody tr:last-child th {
    border-bottom: none;
}

.block-table tbody tr:hover,
.stream-content table tbody tr:hover {
    background: var(--color-off-white);
}


/* ---------- Edge grid (Why it wins) ---------- */

.edge-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    background: var(--color-line);
    border: 1px solid var(--color-line);
}

.block-edge {
    padding: 28px 24px;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 220px;
}

.block-edge__title {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.block-edge__desc {
    color: var(--color-muted);
    font-size: 0.98rem;
}


/* ---------- Partner logo marquee ---------- */

.section--partners {
    padding-top: clamp(40px, 6vw, 72px);
    padding-bottom: clamp(40px, 6vw, 72px);
    overflow: hidden;
}

.partner-marquee {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.partner-marquee__track {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    gap: clamp(56px, 10vw, 120px);
    width: max-content;
    animation: marquee 30s linear infinite;
}

.partner-marquee:hover .partner-marquee__track {
    animation-play-state: paused;
}

.partner-marquee__item {
    flex-shrink: 0;
}

.partner-marquee__logo {
    height: clamp(40px, 5.5vw, 64px);
    width: auto;
    display: block;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .partner-marquee__track {
        animation: none;
    }
}


/* ---------- Pull quote (philosophy page) ---------- */

.pull-quote {
    margin: clamp(40px, 6vw, 72px) 0 0;
    padding: 0;
    border: 0;
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    line-height: 1.2;
    font-style: italic;
}

.pull-quote cite {
    display: block;
    margin-top: 1em;
    font-size: 1.1rem;
    font-style: normal;
    color: var(--color-muted);
}


/* ---------- Page title ---------- */

.page-title {
    font-size: var(--text-h1);
    line-height: 1;
    margin-bottom: 32px;
}


/* ---------- Apply form ---------- */

.apply-form {
    margin-top: 40px;
    display: grid;
    gap: 24px;
}

.apply-form .button {
    justify-self: start;
}

.form-field {
    display: grid;
    gap: 8px;
}

.form-field label {
    font-size: 0.95rem;
    font-weight: 700;
}

.form-field__required {
    color: var(--color-muted);
    font-weight: 400;
}

.form-field input,
.form-field textarea,
.form-field select {
    width: 100%;
    padding: 14px 18px;
    border: var(--field-border);
    border-radius: var(--field-radius);
    background: var(--color-bg);
    color: var(--color-body);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.5;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
    outline: none;
    border-color: var(--color-black);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.08);
}

.form-field textarea {
    border-radius: 18px;
    min-height: 140px;
    resize: vertical;
}

.form-field__errors {
    color: var(--color-black);
    font-size: 0.9rem;
}


/* ---------- Search ---------- */

.search-form {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
}

.search-form__input {
    flex: 1;
    padding: 12px 18px;
    border: var(--field-border);
    border-radius: var(--field-radius);
    font-family: var(--font-body);
    font-size: 1rem;
}

.search-results {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 20px;
}

.search-results a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
}

.search-empty {
    color: var(--color-muted);
}


/* ---------- Blog list (editorial two-column) ---------- */

.blog-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-list__item + .blog-list__item {
    border-top: 1px solid var(--color-line);
}

.blog-list__link {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr) 32px;
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
    padding: clamp(28px, 4vw, 44px) 0;
    color: inherit;
    text-decoration: none;
    transition: color 160ms ease;
}

.blog-list__link:hover,
.blog-list__link:focus-visible {
    color: var(--color-black);
    outline: none;
}

.blog-list__link:focus-visible .blog-list__title {
    text-decoration: underline;
    text-underline-offset: 4px;
}

.blog-list__date {
    display: flex;
    flex-direction: column;
    font-family: var(--font-heading);
    line-height: 1;
    color: var(--color-body);
}

.blog-list__day {
    font-size: clamp(2rem, 3.4vw, 2.8rem);
    letter-spacing: -0.02em;
}

.blog-list__month {
    margin-top: 6px;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted);
}

.blog-list__content {
    min-width: 0;
}

.blog-list__title {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    line-height: 1.15;
    letter-spacing: -0.01em;
    transition: text-decoration-color 160ms ease;
}

.blog-list__intro {
    margin-top: 10px;
    font-size: 1.05rem;
    line-height: 1.5;
    color: var(--color-muted);
    max-width: 56ch;
}

.blog-list__arrow {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-muted);
    align-self: center;
    opacity: 0;
    transform: translateX(-6px);
    transition: opacity 200ms ease, transform 200ms ease, color 200ms ease;
}

.blog-list__link:hover .blog-list__arrow,
.blog-list__link:focus-visible .blog-list__arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--color-black);
}

.blog-empty {
    color: var(--color-muted);
}

.blog-meta {
    display: block;
    margin-bottom: 24px;
    color: var(--color-muted);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.blog-intro {
    font-size: var(--text-large);
    line-height: 1.45;
    margin-bottom: 40px;
    color: var(--color-muted);
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 48px;
}

.tag {
    padding: 6px 14px;
    border: 1px solid var(--color-line);
    border-radius: var(--btn-radius);
    font-size: 0.85rem;
    color: var(--color-muted);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 56px;
    padding: 10px 18px;
    border: 1px solid var(--color-line);
    border-radius: var(--btn-radius);
    font-size: 0.95rem;
    color: var(--color-muted);
    transition: border-color 160ms ease, color 160ms ease;
}

.back-link:hover {
    color: var(--color-black);
    border-color: var(--color-black);
}


/* ---------- Footer ---------- */

.site-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: clamp(28px, 6vw, 80px);
    padding: clamp(40px, 6vw, 72px) var(--gutter);
    border-top: 1px solid var(--color-line);
}

.site-footer__tagline {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3vw, 2.6rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    max-width: 60%;
}

.site-footer__contact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
    text-align: right;
}

.site-footer__email {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    transition: opacity 160ms ease;
}

.site-footer__email:hover {
    text-decoration: underline;
    opacity: 0.7;
}

.site-footer__role {
    color: var(--color-muted);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    order: -1;
}


/* ---------- Responsive ---------- */

@media (max-width: 980px) {
    .hero__layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero__media {
        max-width: 420px;
        margin: 0 auto;
    }

    .hero__copy {
        max-width: 640px;
        margin: 0 auto;
        text-align: center;
    }

    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__latest {
        margin: 48px auto 0;
    }

    .edge-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .site-footer__tagline {
        max-width: 100%;
    }

    .site-footer__contact {
        align-items: flex-start;
        text-align: left;
    }
}

@media (max-width: 680px) {
    .site-header {
        flex-wrap: wrap;
        row-gap: 8px;
        padding: 14px var(--gutter);
    }

    .site-header__brand {
        font-size: 1.35rem;
    }

    .site-nav {
        gap: clamp(16px, 4vw, 24px);
    }

    .edge-grid {
        grid-template-columns: 1fr;
    }

    .partner-marquee__logo {
        height: 36px;
    }

    .page-title {
        font-size: clamp(2.6rem, 12vw, 3.6rem);
    }

    .hero__title {
        font-size: clamp(2.6rem, 12vw, 4rem);
    }

    .search-form {
        flex-direction: column;
    }

    .blog-list__link {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "date arrow"
            "content content";
        gap: 8px 16px;
    }

    .blog-list__date {
        grid-area: date;
        flex-direction: row;
        align-items: baseline;
        gap: 10px;
    }

    .blog-list__day {
        font-size: 1.5rem;
    }

    .blog-list__month {
        margin-top: 0;
    }

    .blog-list__content {
        grid-area: content;
    }

    .blog-list__arrow {
        grid-area: arrow;
        opacity: 1;
        transform: none;
        justify-self: end;
    }
}


/* ---------- Hugo / static-site overrides ---------- */

/* .template-* classes are no longer applied by Wagtail; kept empty for future overrides. */