/* SliceFx site styles. Hand-written; no build step, no utility framework.
   Served verbatim by .github/workflows/pages.yml. */

/* ---------- Tokens ----------------------------------------------------- */
/* The accent is split by role. One violet cannot clear WCAG AA in all three
   positions: white on #8b5cf6 is 4.23:1 and #8b5cf6 on --surface is 4.18:1. */

:root {
    --base: #09090b;
    --surface: #18181b;
    --line: #27272a;
    --success: #10b981;
    --fg: #f4f4f5;
    --fg-mute: #a1a1aa;
    --fg-dim: #8b8b94;
    --accent: #8b5cf6;      /* text on --base            4.70:1 */
    --accent-text: #a78bfa; /* text on --surface         6.51:1 */
    --accent-bg: #7c3aed;   /* background under white    5.70:1 */
    --shadow-hard: 4px 4px 0 0 var(--accent);
    --nav-h: 4rem;
    --font-display: "Space Grotesk", system-ui, sans-serif;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ------------------------------------------------------ */

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

body,
h1,
h2,
h3,
p,
figure,
blockquote,
dl,
dd {
    margin: 0;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

img,
svg {
    max-width: 100%;
}

/* ---------- Base ------------------------------------------------------- */

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--base);
    color: var(--fg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body[data-lang="en"] {
    font-family: "Inter", system-ui, sans-serif;
    letter-spacing: -0.01em;
}

body[data-lang="ja"] {
    font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
    letter-spacing: 0.01em;
}

code,
pre,
.mono {
    font-family: "JetBrains Mono", "Noto Sans JP", monospace;
    letter-spacing: 0;
}

a {
    color: inherit;
}

::selection {
    background: var(--accent-bg);
    color: #fff;
}

/* ---------- Language toggle -------------------------------------------- */

body[data-lang="ja"] .lang-en {
    display: none !important;
}

body[data-lang="en"] .lang-ja {
    display: none !important;
}

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

.wrap {
    max-width: 80rem;
    margin-inline: auto;
    border-inline: 2px solid var(--line);
}

.band {
    border-bottom: 2px solid var(--line);
}

.blueprint {
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 32px 32px;
    background-position: center top;
}

/* ---------- Type ------------------------------------------------------- */

.label {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.h-xl {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.h-lg {
    font-size: clamp(1.75rem, 3.5vw, 2rem);
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.h-md {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
}

/* English headings get a distinct display face; Japanese headings stay on
   Noto Sans JP (Space Grotesk has no CJK glyphs to fall back on). */
body[data-lang="en"] .h-xl,
body[data-lang="en"] .h-lg,
body[data-lang="en"] .h-md {
    font-family: var(--font-display);
}

/* ---------- Surfaces --------------------------------------------------- */

.panel {
    border: 2px solid var(--line);
    background: var(--surface);
    border-radius: 0;
}

.panel--hard {
    box-shadow: var(--shadow-hard);
}

/* ---------- Controls --------------------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border: 2px solid;
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
}

.btn--primary {
    background: var(--accent-bg);
    border-color: var(--accent-bg);
    color: #fff;
    box-shadow: var(--shadow-hard);
}

.btn--primary:hover {
    box-shadow: 2px 2px 0 0 var(--accent);
    transform: translate(2px, 2px);
}

.btn--ghost {
    background: var(--surface);
    border-color: var(--line);
    color: var(--fg);
}

.btn--ghost:hover {
    border-color: var(--accent);
}

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

:not(pre) > code {
    border: 1px solid var(--line);
    background: var(--base);
    color: var(--accent-text);
    padding: 0.1rem 0.4rem;
    font-size: 0.92em;
}

code[data-kind="command"] {
    color: var(--success);
}

code[data-kind="command"]::before {
    content: "$";
    margin-right: 0.35rem;
}

/* ---------- Code blocks ------------------------------------------------ */

.code {
    border: 2px solid var(--line);
    background: var(--surface);
}

.code__bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--line);
    background: var(--base);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.75rem;
    color: var(--fg-mute);
}

/* The filename is one unbreakable token; without min-width:0 it refuses to
   shrink and pushes the chip past the viewport at narrow widths. */
.code__bar > :first-child {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.code__chip {
    flex: none;
    border: 1px solid var(--line);
    padding: 0.15rem 0.5rem;
    white-space: nowrap;
}

.code pre {
    overflow-x: auto;
    padding: 1.5rem;
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.6;
}

.token.keyword {
    color: var(--accent-text);
    font-weight: 700;
}

.token.string {
    color: var(--success);
}

.token.function {
    color: #38bdf8;
}

.token.comment {
    color: var(--fg-dim);
    font-style: italic;
}

.token.type {
    color: var(--fg);
    font-weight: 700;
}

/* ---------- Icons ------------------------------------------------------ */
/* Two inline SVGs only: the GitHub mark and a check glyph. No icon library. */

.i {
    width: 1rem;
    height: 1rem;
    flex: none;
}

.i--check {
    color: var(--success);
}

/* ---------- Nav -------------------------------------------------------- */

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--base);
    border-bottom: 2px solid var(--line);
}

.nav__inner {
    border-bottom: 0;
}

.nav__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    height: var(--nav-h);
    padding-inline: 1.5rem;
}

.nav__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    min-width: 0;
}

.nav__mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    flex: none;
    background: var(--accent-bg);
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
}

.nav__word {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.nav__chip {
    flex: none;
    border: 1px solid var(--line);
    padding: 0.15rem 0.5rem;
    color: var(--fg-mute);
}

.nav__links,
.nav__end {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav__links a,
.nav__mobile a,
.nav__gh {
    text-decoration: none;
    color: var(--fg-mute);
}

.nav__links a:hover,
.nav__mobile a:hover,
.nav__gh:hover {
    color: var(--accent-text);
}

.nav__end {
    gap: 1rem;
}

.nav__gh {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-select {
    border: 2px solid var(--line);
    background: var(--surface);
    color: var(--fg);
    padding: 0.35rem 0.5rem;
    border-radius: 0;
    cursor: pointer;
}

.nav__mobile {
    display: none;
    gap: 1rem;
    padding: 0 1.5rem 0.75rem;
    overflow-x: auto;
    white-space: nowrap;
}

/* The brand + chip + five links + select + GitHub do not fit at 768px --
   they collide. The desktop row only earns its place from 1024px up. */
@media (max-width: 1023px) {
    .nav {
        --nav-h: 3.5rem;
    }

    .nav__links {
        display: none;
    }

    .nav__mobile {
        display: flex;
    }

    .nav__chip {
        display: none;
    }
}

@media (max-width: 479px) {
    .nav__gh-text {
        display: none;
    }
}

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

.hero {
    display: flex;
    flex-direction: column;
    background: var(--base);
}

.hero__copy {
    padding: 3.5rem 1.5rem;
}

.hero__title {
    margin-bottom: 1.75rem;
    text-transform: uppercase;
}

.hero__accent {
    color: var(--accent);
}

.hero__lede {
    max-width: 32rem;
    margin-bottom: 2.5rem;
    color: var(--fg-mute);
    font-family: "JetBrains Mono", "Noto Sans JP", monospace;
    font-size: 0.95rem;
}

.hero__actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
}

.hero__code {
    border-top: 2px solid var(--line);
    background: var(--surface);
}

.code--flush {
    border: 0;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border: 2px solid var(--line);
    background: var(--surface);
    padding: 0.4rem 0.75rem;
    color: var(--accent-text);
}

.chip__dot {
    width: 0.5rem;
    height: 0.5rem;
    flex: none;
    background: var(--success);
}

.copy {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border: 2px solid var(--line);
    background: var(--surface);
    padding: 0.85rem 1rem;
    min-width: 0;
}

.copy > code {
    border: 0;
    background: none;
    padding: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.8rem;
}

.copy__btn {
    display: inline-flex;
    flex: none;
    border: 0;
    background: none;
    color: var(--fg-mute);
    cursor: pointer;
    padding: 0.25rem;
}

.copy__btn:hover {
    color: var(--fg);
}

.pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2rem;
}

.pill {
    border: 2px solid var(--line);
    padding: 0.4rem 0.75rem;
    color: var(--fg-mute);
}

@media (min-width: 1024px) {
    .hero {
        flex-direction: row;
    }

    .hero__copy {
        width: 50%;
        padding: 5.5rem 4rem;
        border-right: 2px solid var(--line);
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .hero__code {
        width: 50%;
        border-top: 0;
    }

    .hero__actions {
        flex-direction: row;
        align-items: center;
    }
}

/* ---------- Release status --------------------------------------------- */

.release {
    background: var(--base);
    padding: 2.5rem 1.5rem;
}

.release__panel {
    border: 2px solid var(--success);
    background: var(--surface);
    padding: 1.5rem;
    font-size: 0.9rem;
}

.release__head {
    font-weight: 700;
    color: var(--success);
    margin-bottom: 0.6rem;
}

.release__body {
    color: var(--fg-mute);
}

.release__body a {
    color: var(--accent-text);
}

/* ---------- Ticker ----------------------------------------------------- */
/* --accent-bg, never --accent: white on #8b5cf6 is 4.23:1 and fails AA. */

.ticker {
    background: var(--accent-bg);
    color: #fff;
}

.ticker__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1rem;
    padding: 1rem 1.5rem;
    border-inline: 0;
    text-align: center;
}

.ticker__sep {
    opacity: 0.55;
}

@media (min-width: 640px) {
    .ticker__inner {
        justify-content: space-between;
    }
}

/* ---------- Split layout (sticky aside + staggered main) --------------- */

.split {
    display: flex;
    flex-direction: column;
    background: var(--base);
}

.split__aside {
    background: var(--surface);
    border-bottom: 2px solid var(--line);
}

.split__sticky {
    padding: 3.5rem 1.5rem;
}

.split__title {
    margin-bottom: 1.25rem;
    text-transform: uppercase;
}

.split__lede {
    margin-bottom: 2.5rem;
    color: var(--fg-mute);
    font-family: "JetBrains Mono", "Noto Sans JP", monospace;
    font-size: 0.875rem;
}

.facts__row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--line);
    color: var(--fg-mute);
}

.facts__row dd {
    margin: 0;
    text-align: right;
}

.stagger {
    padding: 3.5rem 1.5rem;
    border-bottom: 2px solid var(--line);
}

.stagger:last-child {
    border-bottom: 0;
}

.stagger__num {
    margin-bottom: 1.25rem;
    color: var(--accent);
}

.stagger__title {
    margin-bottom: 1.25rem;
    text-transform: uppercase;
}

.stagger__body {
    max-width: 36rem;
    margin-bottom: 1.75rem;
    color: var(--fg-mute);
    font-size: 0.95rem;
}

.stagger__note {
    color: var(--fg-mute);
    font-size: 0.875rem;
}

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

@media (min-width: 768px) {
    .split {
        flex-direction: row;
    }

    .split__aside {
        width: 33.333%;
        flex: none;
        border-bottom: 0;
        border-right: 2px solid var(--line);
    }

    .split__sticky {
        position: sticky;
        top: var(--nav-h);
        padding: 3.5rem;
    }

    .split__main {
        width: 66.667%;
    }

    .stagger {
        padding: 3.5rem;
    }
}

/* ---------- Generic section -------------------------------------------- */

.sect {
    background: var(--base);
    padding: 4rem 1.5rem;
}

.sect__title {
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.sect__title--second {
    margin-top: 5rem;
}

.sect__lede {
    max-width: 44rem;
    margin-bottom: 2.5rem;
    color: var(--fg-mute);
    font-size: 0.95rem;
}

@media (min-width: 768px) {
    .sect {
        padding: 6.5rem 3rem;
    }
}

/* ---------- Key/value rows --------------------------------------------- */

.rows {
    border: 2px solid var(--line);
    background: var(--surface);
}

.rows__row {
    display: flex;
    flex-direction: column;
    border-bottom: 2px solid var(--line);
}

.rows__row:last-child {
    border-bottom: 0;
}

.rows__key {
    padding: 1.5rem;
    font-weight: 700;
    background: var(--base);
}

.rows__key--self {
    color: var(--accent-text);
}

.rows__val {
    padding: 1.5rem;
    color: var(--fg-mute);
    font-size: 0.95rem;
}

@media (min-width: 768px) {
    .rows__row {
        flex-direction: row;
    }

    .rows__key {
        width: 14rem;
        flex: none;
        border-right: 2px solid var(--line);
    }
}

/* ---------- Strengths / what works today ------------------------------- */

.two-col {
    display: grid;
    gap: 2.5rem;
}

.strengths {
    display: grid;
    gap: 2.5rem;
    align-content: start;
}

.strength {
    border-left: 2px solid var(--line);
    padding-left: 1.5rem;
}

.strength__title {
    margin-bottom: 0.6rem;
    font-size: 1.05rem;
    font-weight: 700;
}

.strength p {
    color: var(--fg-mute);
    font-size: 0.95rem;
}

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

.today {
    padding: 2.25rem;
    align-self: start;
}

.today__title {
    padding-bottom: 1.25rem;
    margin-bottom: 1.75rem;
    border-bottom: 2px solid var(--line);
    text-transform: uppercase;
}

.today__list {
    display: grid;
    gap: 1.25rem;
}

.today__list li {
    display: flex;
    align-items: start;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.today__list .i {
    margin-top: 0.2rem;
}

@media (min-width: 1024px) {
    .two-col {
        grid-template-columns: 1.15fr 0.85fr;
        gap: 3rem;
    }

    .today {
        position: sticky;
        top: calc(var(--nav-h) + 2rem);
    }
}

/* ---------- Stacked code windows / notes -------------------------------- */

.code--stack {
    margin-bottom: 2rem;
}

.note {
    border: 2px solid var(--accent);
    background: var(--surface);
    padding: 1.5rem;
    font-size: 0.9rem;
    color: var(--fg-mute);
}

.note__head {
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--accent-text);
}

.note a {
    color: var(--accent-text);
}

/* ---------- Cards ------------------------------------------------------ */

.sect__lede--dim {
    color: var(--fg-dim);
    font-size: 0.875rem;
}

.cards {
    display: grid;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card {
    padding: 1.75rem;
}

.card p {
    color: var(--fg-mute);
    font-size: 0.9rem;
}

.card__name {
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.card--portable .card__name {
    color: var(--success);
}

.card--partial .card__name {
    color: #eab308;
}

.card--aspnet .card__name {
    color: var(--accent-text);
}

.card--portable {
    border-color: var(--success);
    box-shadow: 4px 4px 0 0 var(--success);
}

.card--portable:hover {
    border-color: var(--success);
}

.card--partial:hover {
    border-color: #eab308;
}

.card--aspnet:hover {
    border-color: var(--accent);
}

@media (min-width: 768px) {
    .cards {
        grid-template-columns: 1.4fr 1fr 1fr;
    }
}

/* ---------- Packages --------------------------------------------------- */

.pkgs {
    display: grid;
    gap: 1.5rem;
}

.pkg {
    display: block;
    padding: 1.75rem;
    text-decoration: none;
}

.pkg:hover {
    border-color: var(--accent);
}

.pkg__name {
    margin-bottom: 0.5rem;
    font-size: 1rem;
    font-weight: 700;
}

.pkg p {
    color: var(--fg-mute);
    font-size: 0.9rem;
}

@media (min-width: 640px) {
    .pkgs {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ---------- Docs grid --------------------------------------------------- */

.docs {
    display: grid;
    gap: 1.5rem;
}

.doc {
    display: block;
    padding: 1.75rem;
    text-decoration: none;
}

.doc:not(.doc--static):hover {
    border-color: var(--accent);
}

.doc__num {
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.doc__title {
    margin-bottom: 0.75rem;
    font-size: 1rem;
    font-weight: 700;
}

.doc__body {
    color: var(--fg-mute);
    font-size: 0.875rem;
}

.doc__cta {
    margin-top: 1rem;
    color: var(--accent-text);
}

.doclinks {
    margin-top: 2rem;
    color: var(--fg-mute);
    font-size: 0.875rem;
    line-height: 2;
}

.doclinks a {
    color: var(--accent-text);
}

@media (min-width: 640px) {
    .docs {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .docs {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ---------- Footer ------------------------------------------------------ */
/* --fg-mute on --surface is 6.91:1. zinc-500 would be 3.67:1 and fail. */

.site-footer {
    margin-top: auto;
    background: var(--surface);
    border-top: 2px solid var(--line);
}

.foot {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    padding: 3.5rem 1.5rem;
}

.foot__mark-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.foot__mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    flex: none;
    background: var(--line);
    color: var(--fg);
    font-size: 0.7rem;
    font-weight: 700;
}

.foot__desc {
    max-width: 20rem;
    color: var(--fg-mute);
    font-size: 0.8rem;
}

.foot__cols {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
}

.foot__col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.85rem;
}

.foot__head {
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--line);
    color: var(--fg);
}

.foot__col a {
    color: var(--fg-mute);
    text-decoration: none;
}

.foot__col a:hover {
    color: var(--accent-text);
}

@media (min-width: 768px) {
    .foot {
        flex-direction: row;
        justify-content: space-between;
        padding: 3.5rem;
    }
}

/* ---------- Copy status ------------------------------------------------ */

.copy-status {
    min-height: 1.25rem;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.75rem;
}

.copy-status.is-ok {
    color: var(--success);
}

.copy-status.is-error {
    color: #fca5a5;
}

/* ---------- Accessibility ---------------------------------------------- */

.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 100;
    transform: translateY(-150%);
    transition: transform 0.2s var(--ease-out);
    padding: 0.5rem 1rem;
    background: var(--fg);
    color: var(--base);
    font-weight: 700;
    text-decoration: none;
}

.skip-link:focus {
    transform: translateY(0);
}

:where(a, button, select, [tabindex]):focus-visible {
    outline: 2px solid var(--accent-text);
    outline-offset: 3px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-h);
}

[id] {
    scroll-margin-top: var(--nav-h);
}

/* Same breakpoint as the nav above: below 1024px the nav is two rows tall. */
@media (max-width: 1023px) {
    html {
        scroll-padding-top: 8rem;
    }

    [id] {
        scroll-margin-top: 8rem;
    }
}

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

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    .btn--primary:hover {
        transform: none !important;
    }
}