/* ================================================================
   The Frontier Lab — screen.css
   Palette: paper + ink + signal (oxide rust)
   Typography: Geist + Geist Mono + Source Serif 4
   Color schemes: light (default), dark via [data-color-scheme="dark"]
   ================================================================ */

/* ---------- Color tokens (light) ---------- */
:root {
    --paper:        oklch(0.975 0.006 80);
    --paper-2:      oklch(0.955 0.008 80);
    --paper-3:      oklch(0.92 0.01 80);
    --rule:         oklch(0.86 0.008 80);
    --ink:          oklch(0.18 0.012 60);
    --ink-2:        oklch(0.34 0.012 60);
    --ink-3:        oklch(0.52 0.01 70);
    --signal:       oklch(0.62 0.18 38);
    --signal-deep:  oklch(0.48 0.16 35);
    --signal-tint:  oklch(0.94 0.04 50);
    --ok:           oklch(0.55 0.13 145);
    --warn:         oklch(0.74 0.14 80);

    --sans:  'Geist', ui-sans-serif, system-ui, sans-serif;
    --mono:  'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --serif: 'Source Serif 4', ui-serif, Georgia, serif;

    /* Ghost's custom typography settings (Settings → Design → Site → Typography)
       override these when the publisher picks a font. Otherwise we use Geist. */
    --gh-font-heading: var(--sans);
    --gh-font-body: var(--sans);

    --container-max: 1180px;
    --container-pad: clamp(20px, 4vw, 56px);
}

/* ---------- Color tokens (dark) ---------- */
[data-color-scheme="dark"] {
    --paper:        oklch(0.18 0.008 60);
    --paper-2:      oklch(0.22 0.009 60);
    --paper-3:      oklch(0.28 0.01 60);
    --rule:         oklch(0.32 0.01 60);
    --ink:          oklch(0.95 0.005 80);
    --ink-2:        oklch(0.78 0.008 80);
    --ink-3:        oklch(0.6 0.01 80);
    --signal:       oklch(0.68 0.18 38);
    --signal-deep:  oklch(0.78 0.16 35);
    --signal-tint:  oklch(0.32 0.08 38);
    --ok:           oklch(0.7 0.15 145);
    --warn:         oklch(0.78 0.14 80);
}

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

html, body {
    margin: 0;
    padding: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--signal); color: var(--signal-deep); }

::selection { background: var(--signal-tint); color: var(--ink); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--sans);
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin: 0 0 0.5em;
    color: var(--ink);
}
h1 { font-size: clamp(36px, 5vw, 56px); letter-spacing: -0.035em; line-height: 1.05; }
h2 { font-size: clamp(28px, 3.5vw, 36px); letter-spacing: -0.03em; }
h3 { font-size: clamp(22px, 2.5vw, 26px); letter-spacing: -0.02em; }
h4 { font-size: 19px; }

p { margin: 0 0 1em; }

.serif { font-family: var(--serif); }
.italic { font-style: italic; font-weight: 400; }
.mono { font-family: var(--mono); }
.uc { text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- Containers ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-pad);
    padding-right: var(--container-pad);
}

/* ---------- Atoms ---------- */
.dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--ink-2);
}
.dot--signal { background: var(--signal); box-shadow: 0 0 0 4px var(--signal-tint); }

.rule { display: block; height: 1px; background: var(--rule); }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 8px;
    border-radius: 4px;
    background: var(--paper-2);
    color: var(--ink-2);
    font: 500 11px/1.4 var(--mono);
    border: 1px solid var(--rule);
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border: 1px solid var(--rule);
    border-radius: 999px;
    font: 500 11px/1 var(--mono);
    color: var(--ink-2);
    background: var(--paper);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid transparent;
    border-radius: 999px;
    font: 500 14px/1 var(--sans);
    padding: 12px 18px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn--sm { padding: 8px 14px; font-size: 13px; }
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--ink-2); color: var(--paper); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--signal { background: var(--signal); color: #fff; border-radius: 8px; }
.btn--signal:hover { background: var(--signal-deep); }

/* ---------- Site header ---------- */
.site-header {
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(120%) blur(6px);
    background: color-mix(in oklab, var(--paper) 92%, transparent);
}
.site-header__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 14px var(--container-pad);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.site-header__logo {
    text-decoration: none;
    color: var(--ink);
    display: inline-flex;
}
.site-header__logo:hover { color: var(--signal-deep); }

.site-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    flex: 1;
    justify-content: center;
}
.site-nav ul { list-style: none; padding: 0; margin: 0; display: flex; gap: 24px; align-items: center; }
.site-nav a { font: 500 13px var(--mono); color: var(--ink-2); text-decoration: none; }
.site-nav a:hover { color: var(--signal-deep); }

.site-header__actions { display: flex; align-items: center; gap: 10px; }

/* ---------- Theme toggle ---------- */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    background: transparent;
    border: 1px solid var(--rule);
    border-radius: 999px;
    color: var(--ink-2);
    cursor: pointer;
    padding: 0;
    transition: border-color 0.15s, color 0.15s;
}
.theme-toggle:hover { border-color: var(--ink); color: var(--ink); }
.theme-toggle__icon { transition: opacity 0.2s, transform 0.2s; }
.theme-toggle__icon--moon { display: none; }
[data-color-scheme="dark"] .theme-toggle__icon--sun { display: none; }
[data-color-scheme="dark"] .theme-toggle__icon--moon { display: block; }

/* ---------- Hero · Lab Notebook ---------- */
.hero--lab { position: relative; border-bottom: 1px solid var(--rule); }
.hero__grid {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: clamp(40px, 6vw, 80px) var(--container-pad);
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
}
@media (min-width: 900px) {
    .hero__grid { grid-template-columns: 1.15fr 1fr; align-items: center; }
}

.hero__main { max-width: 620px; }
.hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    color: var(--signal-deep);
    font-size: 11px;
}
.hero__title {
    font: 700 clamp(40px, 6vw, 64px)/1.0 var(--sans);
    letter-spacing: -0.035em;
    margin: 0 0 24px;
    color: var(--ink);
}
.hero__title .serif { color: var(--ink-2); }
.hero__lede {
    font: 400 clamp(16px, 1.6vw, 18px)/1.55 var(--sans);
    color: var(--ink-2);
    max-width: 520px;
    margin: 0 0 32px;
}

.subscribe-form {
    display: flex;
    align-items: stretch;
    border: 1.5px solid var(--ink);
    border-radius: 8px;
    overflow: hidden;
    max-width: 480px;
    background: var(--paper);
}
.subscribe-form__input {
    flex: 1;
    padding: 14px 16px;
    border: 0;
    background: transparent;
    color: var(--ink);
    font: 400 14px var(--mono);
    outline: none;
}
.subscribe-form__input::placeholder { color: var(--ink-3); }
.subscribe-form__btn {
    background: var(--ink);
    color: var(--paper);
    border: 0;
    padding: 0 22px;
    font: 500 12px var(--mono);
    letter-spacing: 0.06em;
    cursor: pointer;
    white-space: nowrap;
}
.subscribe-form__btn:hover { background: var(--ink-2); }

/* ---------- Bench card ---------- */
.hero__panel {
    background: var(--paper-2);
    border: 1px solid var(--rule);
    border-radius: 12px;
    padding: 28px;
}
.panel__breadcrumb { color: var(--ink-3); margin-bottom: 16px; font-size: 10px; }
.panel__footer { color: var(--ink-3); margin-top: 18px; font-size: 11px; line-height: 1.7; }

.bench-card {
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 10px;
    padding: 20px;
}
.bench-card__head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 14px;
}
.bench-card__title { font: 600 14px var(--sans); color: var(--ink); }
.bench-card__status { font: 500 11px var(--mono); }
.bench-card__status--PASS { color: var(--ok); }
.bench-card__status--FAIL { color: var(--signal); }
.bench-card__status--RUNNING { color: var(--warn); }

.bench-card__row {
    display: grid;
    grid-template-columns: 110px 1fr 60px;
    gap: 12px;
    padding: 9px 0;
    align-items: center;
    border-top: 1px dashed var(--rule);
}
.bench-card__key { font-size: 11px; color: var(--ink-3); }
.bench-card__bar {
    height: 6px;
    background: var(--paper-3);
    border-radius: 99px;
    overflow: hidden;
    position: relative;
}
.bench-card__bar > span {
    position: absolute;
    inset: 0;
    background: var(--ink);
    transform-origin: left;
    border-radius: 99px;
}
.bench-card__val { font-size: 12px; font-weight: 500; text-align: right; color: var(--ink); }
.bench-card__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 16px;
}

/* ---------- Recent issues feed ---------- */
.feed {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: clamp(40px, 6vw, 80px) var(--container-pad);
}
.feed__head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}
.feed__label { color: var(--ink-3); font-size: 11px; }
.feed__head .rule { flex: 1; }

.feed__list { list-style: none; padding: 0; margin: 0; }
.feed__item { border-bottom: 1px solid var(--rule); }
.feed__item:first-child { border-top: 1px solid var(--rule); }
.feed__link {
    display: grid;
    grid-template-columns: 32px 1fr auto;
    gap: 20px;
    padding: 22px 0;
    text-decoration: none;
    color: var(--ink);
    align-items: baseline;
    transition: background 0.15s;
}
.feed__link:hover {
    background: linear-gradient(to right, var(--paper-2), transparent);
    color: var(--signal-deep);
}
.feed__num { color: var(--ink-3); font-size: 12px; }
.feed__body { display: flex; flex-direction: column; gap: 6px; }
.feed__title { font: 600 19px var(--sans); letter-spacing: -0.015em; }
.feed__excerpt { font: 400 14px/1.5 var(--sans); color: var(--ink-2); max-width: 65ch; }
.feed__meta { font-size: 11px; color: var(--ink-3); white-space: nowrap; }

/* ---------- Article · Field Report ---------- */
.article--field-report .spec-band {
    background: var(--paper-2);
    border-bottom: 1px solid var(--rule);
    padding: clamp(40px, 6vw, 64px) 0;
}
.spec-band__eyebrow {
    color: var(--signal-deep);
    font-size: 11px;
    margin-bottom: 16px;
}
.spec-band__title {
    font: 700 clamp(34px, 5vw, 56px)/1.05 var(--sans);
    letter-spacing: -0.035em;
    margin: 0;
    max-width: 22ch;
}
.spec-band__lede {
    font: 400 clamp(17px, 1.7vw, 19px)/1.55 var(--sans);
    color: var(--ink-2);
    margin: 20px 0 0;
    max-width: 65ch;
}
.spec-band__meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 28px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
}
.spec-meta__key { font-size: 10px; color: var(--ink-3); margin-bottom: 6px; }
.spec-meta__val { font: 500 15px var(--sans); color: var(--ink); }

/* feature image */
.article__feature {
    margin: clamp(32px, 4vw, 48px) auto;
    max-width: var(--container-max);
    padding: 0 var(--container-pad);
}
.article__feature img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--rule);
}
.article__feature figcaption {
    font-size: 11px;
    color: var(--ink-3);
    margin-top: 8px;
    text-align: center;
}

/* article body */
.article__body {
    max-width: 720px;
    margin: clamp(40px, 6vw, 56px) 0;
    font: 400 18px/1.7 var(--sans);
    color: var(--ink);
}
.article__body > * { max-width: 100%; }

.article__body h2 {
    font: 700 28px/1.2 var(--sans);
    letter-spacing: -0.025em;
    margin: 2.2em 0 0.6em;
    padding-top: 1em;
    border-top: 1px solid var(--rule);
}
.article__body h2:first-child { border-top: 0; padding-top: 0; margin-top: 0; }
.article__body h3 {
    font: 600 22px/1.3 var(--sans);
    margin: 1.8em 0 0.5em;
}
.article__body p { margin: 0 0 1.1em; }

.article__body strong { font-weight: 600; color: var(--ink); }
.article__body em { font-style: italic; }

.article__body a {
    color: var(--ink);
    text-decoration: underline;
    text-decoration-color: var(--signal);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}
.article__body a:hover { color: var(--signal-deep); }

.article__body blockquote {
    font: 400 24px/1.35 var(--serif);
    font-style: italic;
    border-left: 2px solid var(--signal);
    padding-left: 24px;
    margin: 1.8em 0;
    color: var(--ink);
}

.article__body ul, .article__body ol {
    padding-left: 1.5em;
    margin: 0 0 1.1em;
}
.article__body li { margin-bottom: 0.4em; }

.article__body hr {
    border: 0;
    border-top: 1px solid var(--rule);
    margin: 2em 0;
}

/* Code blocks */
.article__body pre,
.article__body code {
    font-family: var(--mono);
}
.article__body code {
    background: var(--paper-2);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.88em;
    color: var(--signal-deep);
}
.article__body pre {
    background: var(--paper-2);
    border: 1px solid var(--rule);
    border-radius: 8px;
    padding: 18px 20px;
    overflow-x: auto;
    margin: 1.5em 0;
    font-size: 13px;
    line-height: 1.6;
}
.article__body pre code {
    background: transparent;
    border: 0;
    padding: 0;
    color: var(--ink);
    font-size: inherit;
}

/* Tables in body */
.article__body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 14px;
    border: 1px solid var(--rule);
    border-radius: 8px;
    overflow: hidden;
}
.article__body th {
    background: var(--paper-2);
    text-align: left;
    padding: 12px 16px;
    font: 500 11px var(--mono);
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-bottom: 1px solid var(--rule);
}
.article__body td {
    padding: 12px 16px;
    border-top: 1px dashed var(--rule);
    font-family: var(--mono);
}

/* Comments */
.article__comments {
    border-top: 1px solid var(--rule);
    padding: clamp(40px, 6vw, 64px) 0;
}
.article__comments-title {
    color: var(--ink-3);
    font-size: 11px;
    font-weight: 500;
    margin: 0 0 24px;
    max-width: 720px;
}
/* The Ghost {{comments}} helper renders an iframe that handles its own
   styling internally. Constrain its outer width to the reading column. */
.article__comments iframe,
.article__comments [data-ghost-comments] {
    max-width: 720px;
    width: 100%;
    margin: 0;
    border: 0;
}

/* Article footer & CTA */
.article__footer {
    border-top: 1px solid var(--rule);
    background: var(--paper-2);
    padding: clamp(40px, 5vw, 64px) 0;
    margin-top: clamp(40px, 5vw, 64px);
}
.article__cta {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}
.article__cta h2 {
    font-family: var(--serif);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(28px, 3.5vw, 36px);
    letter-spacing: -0.02em;
    margin: 0 0 12px;
}
.article__cta p {
    color: var(--ink-2);
    margin-bottom: 24px;
}
.article__cta .subscribe-form { margin: 0 auto; }

/* Related */
.related {
    border-top: 1px solid var(--rule);
    padding: clamp(40px, 6vw, 64px) 0;
}
.related__title { color: var(--ink-3); font-size: 11px; margin: 0 0 16px; font-weight: 500; }

/* ---------- Page layout ---------- */
.page-header {
    border-bottom: 1px solid var(--rule);
    padding: clamp(40px, 6vw, 64px) 0;
}
.page-header__eyebrow { color: var(--ink-3); font-size: 11px; margin-bottom: 12px; }
.page-header__title {
    font: 700 clamp(36px, 5vw, 52px)/1.05 var(--sans);
    letter-spacing: -0.035em;
    margin: 0;
}
.page-header__lede {
    font: 400 clamp(17px, 1.6vw, 19px)/1.55 var(--sans);
    color: var(--ink-2);
    max-width: 65ch;
    margin: 16px 0 0;
}

.article--page .article__body {
    max-width: 720px;
    margin: clamp(32px, 4vw, 48px) auto;
}

/* ---------- Site footer ---------- */
.site-footer {
    border-top: 1px solid var(--rule);
    background: var(--paper);
    padding: clamp(28px, 4vw, 40px) 0;
    margin-top: 64px;
}
.site-footer__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.site-footer__nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 20px;
}
.site-footer__nav a {
    font: 500 13px var(--sans);
    color: var(--ink-2);
    text-decoration: none;
}
.site-footer__nav a:hover { color: var(--signal-deep); }
.site-footer__meta { font-size: 11px; color: var(--ink-3); }

/* Stamp logo (footer) */
.stamp {
    display: inline-flex;
    align-items: stretch;
    border: 1.5px solid currentColor;
    border-radius: 6px;
    overflow: hidden;
    font: 500 14px var(--mono);
    color: var(--ink);
}
.stamp__pill {
    background: currentColor;
    color: var(--paper);
    padding: 6px 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}
.stamp__pill .stamp__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--signal);
}
.stamp__body {
    padding: 6px 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    line-height: 1;
    gap: 4px;
}
.stamp__title { font-size: 13px; font-weight: 600; }
.stamp__meta { font-size: 10px; color: var(--ink-3); letter-spacing: 0.18em; }

/* ---------- Responsive nav (small screens) ---------- */
@media (max-width: 720px) {
    .site-nav { display: none; }
    .site-header__inner { gap: 12px; }
    .hero__title { font-size: clamp(32px, 8vw, 44px); }
    .feed__link { grid-template-columns: 28px 1fr; }
    .feed__meta { grid-column: 2; padding-left: 0; }
}

/* ---------- Koenig editor card widths ---------- */
.article__body .kg-width-wide {
    margin-left: -10%;
    margin-right: -10%;
    max-width: none;
    width: auto;
}
.article__body .kg-width-full {
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    max-width: 100vw;
    width: 100vw;
}
.article__body .kg-image-card img {
    border-radius: 8px;
    border: 1px solid var(--rule);
}
.article__body .kg-image-card figcaption {
    font: 400 13px/1.5 var(--sans);
    color: var(--ink-3);
    text-align: center;
    margin-top: 10px;
}
.article__body .kg-bookmark-card {
    border: 1px solid var(--rule);
    border-radius: 8px;
    overflow: hidden;
    margin: 1.5em 0;
}
.article__body .kg-bookmark-container {
    display: flex;
    text-decoration: none;
    color: var(--ink);
}
.article__body .kg-bookmark-content {
    flex: 1;
    padding: 18px 20px;
}
.article__body .kg-bookmark-title {
    font: 600 15px var(--sans);
    color: var(--ink);
    margin-bottom: 6px;
}
.article__body .kg-bookmark-description {
    font: 400 13px/1.5 var(--sans);
    color: var(--ink-2);
}
.article__body .kg-callout-card {
    background: var(--paper-2);
    border-left: 3px solid var(--signal);
    border-radius: 4px;
    padding: 16px 20px;
    margin: 1.2em 0;
}
.article__body .kg-toggle-card {
    border: 1px solid var(--rule);
    border-radius: 8px;
    padding: 14px 18px;
    margin: 1em 0;
}

/* ---------- Print cleanup ---------- */
@media print {
    .site-header, .site-footer, .article__footer, .related, .subscribe-form { display: none; }
    body { background: #fff; color: #000; }
}