/*
 * Homepage-only styles for python-type-checking.com.
 *
 * Loaded after tokens.css and site.css. Everything here is scoped to the
 * homepage's own classes; the dashboards never load this file.
 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 17px;
    min-height: 100vh;
    -webkit-text-size-adjust: 100%;
}

code {
    font-family: var(--font-mono);
    background: var(--color-bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875em;
}

a {
    color: var(--color-accent);
}

.wrap {
    max-width: var(--width-page);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.prose {
    max-width: var(--width-prose);
}

/* --------------------------------------------------------------- hero --- */

.hero {
    background: linear-gradient(160deg, var(--color-bg-secondary) 0%, var(--color-bg) 70%);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-9) 0 var(--space-8);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-text-bright);
    max-width: 20ch;
}

.hero__lead {
    margin-top: var(--space-5);
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    color: var(--color-text);
    max-width: var(--width-prose);
}

.hero__actions {
    margin-top: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.handoff {
    margin-top: var(--space-7);
    max-width: 72ch;
}

.handoff strong {
    color: var(--color-text-bright);
}

/* ------------------------------------------------------------ sections -- */

.section {
    padding: var(--space-9) 0;
    border-bottom: 1px solid var(--color-border);
}

.section:last-of-type {
    border-bottom: none;
}

.section__eyebrow {
    display: block;
    font-size: 0.8125rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}

.section h1,
.section h2 {
    font-size: clamp(1.5rem, 3.2vw, 2.125rem);
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--color-text-bright);
    max-width: 24ch;
}

.section__intro {
    margin-top: var(--space-4);
    max-width: var(--width-prose);
}

.section__intro p + p {
    margin-top: var(--space-4);
}

.section h3 {
    color: var(--color-text-bright);
    font-size: 1.125rem;
    line-height: 1.35;
}

/* ----------------------------------------------------------- timeline --- */

.timeline {
    margin-top: var(--space-7);
    list-style: none;
    position: relative;
    max-width: 860px;
}

/* The rail is decorative; it is drawn on the list, not on each item, so a
   screen reader sees a plain ordered sequence of events. */
.timeline::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background: var(--color-border);
}

.timeline__item {
    position: relative;
    padding-left: var(--space-6);
    padding-bottom: var(--space-6);
}

.timeline__item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
}

.timeline__item--language::before { border-color: var(--color-accent); }
.timeline__item--tools::before    { border-color: var(--color-pyrefly); }
.timeline__item--ecosystem::before{ border-color: var(--color-success); }
.timeline__item--governance::before { border-color: var(--color-ty); }

/*
 * The final entry is a question, not an event. Hollow dot, dashed rail stub and
 * muted heading so it reads as unfinished rather than as something that
 * happened. The category badge still spells out "Open question", so the
 * distinction does not depend on noticing the styling.
 */
.timeline__item--open::before {
    border-color: var(--color-text-muted);
    border-style: dashed;
}

.timeline__item--open {
    padding-bottom: 0;
}

.timeline__item--open h3 {
    color: var(--color-text);
}

.timeline__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-3);
}

.timeline__date {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

/* Category is always spelled out, never encoded by the dot colour alone. */
.timeline__tag {
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    background: var(--color-bg-tertiary);
}

.timeline__item h3 {
    margin-top: var(--space-2);
}

.timeline__item p {
    margin-top: var(--space-2);
    max-width: var(--width-prose);
}

.timeline__item details {
    margin-top: var(--space-3);
    max-width: var(--width-prose);
}

.timeline__item summary {
    cursor: pointer;
    color: var(--color-accent);
    font-size: 0.9375rem;
}

.timeline__item details p {
    margin-top: var(--space-2);
}

.sources {
    margin-top: var(--space-3);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.sources a + a::before {
    content: " · ";
    color: var(--color-text-muted);
}

.timeline__next {
    margin-top: var(--space-6);
    padding: var(--space-5);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
    max-width: 860px;
}

.timeline__next h3 {
    margin-bottom: var(--space-2);
}

/* -------------------------------------------------------------- cards --- */

.card-grid {
    margin-top: var(--space-6);
    display: grid;
    gap: var(--space-5);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.card-grid--two {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
}

.card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.card__year {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.card p {
    margin: 0;
}

.card ul {
    margin: 0;
    padding-left: var(--space-5);
}

.card li + li {
    margin-top: var(--space-2);
}

.card__actions {
    margin-top: auto;
    padding-top: var(--space-2);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.card--forthcoming {
    border-style: dashed;
    background: transparent;
}

.badge {
    align-self: flex-start;
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    background: var(--color-bg-tertiary);
}

.stat {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-bright);
    line-height: 1.1;
}

.stat__label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text);
    margin-top: var(--space-1);
}

/* The caveat sits with the number, not behind a hover. */
.stat__caveat {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

.card--benchmark h3 {
    font-size: 1.25rem;
}

/*
 * On the 404 page the cards sit directly under the page h1, so their headings
 * are h2 rather than h3. Same visual weight either way.
 */
.card h2 {
    color: var(--color-text-bright);
    font-size: 1.125rem;
    line-height: 1.35;
}

.card__checkers {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.scope-note {
    margin-top: var(--space-5);
    max-width: 72ch;
}

/* --------------------------------------------------------------- code --- */

.code-block {
    margin-top: var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    overflow-x: auto;
}

.code-block code {
    background: none;
    padding: 0;
    font-size: 0.875rem;
    color: var(--color-text-bright);
    white-space: pre;
}

.caveat {
    margin-top: var(--space-5);
    max-width: 72ch;
    border-left: 3px solid var(--color-warning);
    padding-left: var(--space-4);
    color: var(--color-text);
}

/* ------------------------------------------------------------- closing -- */

.closing {
    padding: var(--space-9) 0;
}

.closing__actions {
    margin-top: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.closing__line {
    margin-top: var(--space-6);
    font-size: 1.125rem;
    color: var(--color-text-bright);
}

/* -------------------------------------------------------------- mobile -- */

@media (max-width: 720px) {
    body {
        font-size: 16px;
    }

    .wrap {
        padding: 0 var(--space-4);
    }

    .hero {
        padding: var(--space-7) 0 var(--space-6);
    }

    .section,
    .closing {
        padding: var(--space-7) 0;
    }

    .hero__actions .link-button,
    .closing__actions .link-button {
        width: 100%;
        justify-content: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}