/* ==========================================================================
   PyPie design system
   One token set, two themes. Light is "paper" (Solarized-warm), dark is
   "ink". Theme is selected by [data-theme] on <html>; without it, the OS
   preference applies.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Fonts (self-hosted, latin subset)
   -------------------------------------------------------------------------- */

@font-face {
    font-family: "Space Grotesk";
    font-style: normal;
    font-weight: 300 700;
    font-display: swap;
    src: url("fonts/space-grotesk-var.woff2") format("woff2");
}

@font-face {
    font-family: "IBM Plex Mono";
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url("fonts/ibm-plex-mono-400.woff2") format("woff2");
}

@font-face {
    font-family: "IBM Plex Mono";
    font-style: italic;
    font-weight: 400;
    font-display: swap;
    src: url("fonts/ibm-plex-mono-400-italic.woff2") format("woff2");
}

@font-face {
    font-family: "IBM Plex Mono";
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url("fonts/ibm-plex-mono-600.woff2") format("woff2");
}

/* --------------------------------------------------------------------------
   Tokens
   -------------------------------------------------------------------------- */

:root {
    color-scheme: light;

    --font-sans: "Space Grotesk", "Trebuchet MS", system-ui, sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, "Courier New", monospace;

    --bg: #fdf6e3;
    --surface: #fffbf0;
    --surface-2: #f5eeda;
    --surface-3: #eee8d5;

    --text: #33484f;
    --heading: #0b3a47;
    --muted: #71837f;
    --faint: #93a39b;

    --border: #e3d9bf;
    --border-strong: #c2b899;

    --accent: #2aa198;
    --accent-strong: #19756d;
    --accent-soft: rgba(42, 161, 152, 0.12);
    --accent-2: #b58900;
    --accent-2-strong: #8f6c00;
    --danger: #dc322f;

    --header-bg: rgba(253, 246, 227, 0.88);
    --shadow: 0 1px 2px rgba(11, 58, 71, 0.06), 0 4px 16px rgba(11, 58, 71, 0.05);
    --shadow-soft: 0 1px 2px rgba(11, 58, 71, 0.05);

    --inline-code-bg: rgba(11, 58, 71, 0.06);
    --inline-code-border: rgba(11, 58, 71, 0.12);

    --code-bg: #faf2dc;
    --code-border: #e3d9bf;
    --code-base: #51666d;
    --code-kw: #9a7600;
    --code-fn: #1d7f77;
    --code-type: #6c71c4;
    --code-num: #718800;
    --code-op: #51666d;
    --code-comment: #93a39b;

    --tooltip-bg: #0b3a47;
    --tooltip-text: #fdf6e3;
    --tooltip-border: #0b3a47;

    --chat-left-bg: #fffbf0;
    --chat-left-border: #e3d9bf;
    --chat-right-bg: rgba(42, 161, 152, 0.09);
    --chat-right-border: rgba(42, 161, 152, 0.32);

    --editor-bg: #fffbf0;
    --editor-gutter: #f5eeda;
    --playground-header-height: 3.4rem;
}

:root[data-theme="dark"] {
    color-scheme: dark;

    --bg: #171d22;
    --surface: #20272e;
    --surface-2: #263039;
    --surface-3: #2d3740;

    --text: #b8c5cb;
    --heading: #dce7ec;
    --muted: #87969e;
    --faint: #68767e;

    --border: #35414a;
    --border-strong: #4a5862;

    --accent: #58b8ad;
    --accent-strong: #7cc8bf;
    --accent-soft: rgba(88, 184, 173, 0.12);
    --accent-2: #c6a24c;
    --accent-2-strong: #d6b86b;
    --danger: #e0837c;

    --header-bg: rgba(23, 29, 34, 0.88);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.22), 0 6px 20px rgba(0, 0, 0, 0.18);
    --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.18);

    --inline-code-bg: rgba(255, 255, 255, 0.07);
    --inline-code-border: rgba(255, 255, 255, 0.13);

    --code-bg: #151c22;
    --code-border: #35414a;
    --code-base: #b7c3c9;
    --code-kw: #d2b76a;
    --code-fn: #82c7d8;
    --code-type: #d2a8cb;
    --code-num: #b7d18a;
    --code-op: #b7c3c9;
    --code-comment: #6c7a82;

    --tooltip-bg: #263039;
    --tooltip-text: #dce7ec;
    --tooltip-border: #4a5862;

    --chat-left-bg: #20272e;
    --chat-left-border: #35414a;
    --chat-right-bg: rgba(88, 184, 173, 0.09);
    --chat-right-border: rgba(88, 184, 173, 0.24);

    --editor-bg: #151c22;
    --editor-gutter: #20272e;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        color-scheme: dark;

        --bg: #171d22;
        --surface: #20272e;
        --surface-2: #263039;
        --surface-3: #2d3740;

        --text: #b8c5cb;
        --heading: #dce7ec;
        --muted: #87969e;
        --faint: #68767e;

        --border: #35414a;
        --border-strong: #4a5862;

        --accent: #58b8ad;
        --accent-strong: #7cc8bf;
        --accent-soft: rgba(88, 184, 173, 0.12);
        --accent-2: #c6a24c;
        --accent-2-strong: #d6b86b;
        --danger: #e0837c;

        --header-bg: rgba(23, 29, 34, 0.88);
        --shadow: 0 1px 2px rgba(0, 0, 0, 0.22), 0 6px 20px rgba(0, 0, 0, 0.18);
        --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.18);

        --inline-code-bg: rgba(255, 255, 255, 0.07);
        --inline-code-border: rgba(255, 255, 255, 0.13);

        --code-bg: #151c22;
        --code-border: #35414a;
        --code-base: #b7c3c9;
        --code-kw: #d2b76a;
        --code-fn: #82c7d8;
        --code-type: #d2a8cb;
        --code-num: #b7d18a;
        --code-op: #b7c3c9;
        --code-comment: #6c7a82;

        --tooltip-bg: #263039;
        --tooltip-text: #dce7ec;
        --tooltip-border: #4a5862;

        --chat-left-bg: #20272e;
        --chat-left-border: #35414a;
        --chat-right-bg: rgba(88, 184, 173, 0.09);
        --chat-right-border: rgba(88, 184, 173, 0.24);

        --editor-bg: #151c22;
        --editor-gutter: #20272e;
    }
}

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

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
    color: var(--heading);
    line-height: 1.15;
    letter-spacing: -0.01em;
}

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
}

::selection {
    background: var(--accent-soft);
}

button,
select {
    font: inherit;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    max-width: 84rem;
    margin-inline: auto;
    padding: 0.65rem clamp(1rem, 3vw, 2rem);
    display: flex;
    align-items: center;
    gap: clamp(1rem, 3vw, 2.25rem);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--heading);
    font-weight: 700;
    font-size: 1.12rem;
    letter-spacing: -0.01em;
    flex: 0 0 auto;
}

.brand__mark {
    width: 1.35rem;
    height: 1.35rem;
    display: block;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: clamp(0.6rem, 2vw, 1.4rem);
    overflow-x: auto;
    scrollbar-width: none;
    flex: 1 1 auto;
}

.site-nav::-webkit-scrollbar {
    display: none;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.35rem 0.1rem;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    transition: color 120ms ease;
}

.site-nav a:hover {
    color: var(--heading);
}

.site-nav a[aria-current="page"] {
    color: var(--heading);
    border-bottom-color: var(--accent);
}

.theme-toggle {
    flex: 0 0 auto;
    width: 2.1rem;
    height: 2.1rem;
    display: inline-grid;
    place-items: center;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: color 120ms ease, border-color 120ms ease;
}

.theme-toggle:hover {
    color: var(--heading);
    border-color: var(--border-strong);
}

.theme-toggle svg {
    width: 1.05rem;
    height: 1.05rem;
}

.theme-toggle .theme-toggle__sun {
    display: none;
}

.theme-toggle .theme-toggle__moon {
    display: block;
}

:root[data-theme="dark"] .theme-toggle .theme-toggle__sun {
    display: block;
}

:root[data-theme="dark"] .theme-toggle .theme-toggle__moon {
    display: none;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .theme-toggle .theme-toggle__sun {
        display: block;
    }

    :root:not([data-theme]) .theme-toggle .theme-toggle__moon {
        display: none;
    }
}

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

.site-footer {
    margin-top: clamp(3rem, 8vw, 5rem);
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.home-page .site-footer {
    margin-top: 0;
}

.site-footer__inner {
    max-width: 84rem;
    margin-inline: auto;
    padding: 1.6rem clamp(1rem, 3vw, 2rem) 2rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 2rem;
}

.site-footer .brand {
    font-size: 1rem;
}

.site-footer__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.2rem;
}

.site-footer__nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
}

.site-footer__nav a:hover {
    color: var(--heading);
}

.site-footer__note {
    margin: 0;
    margin-left: auto;
    color: var(--faint);
    font-size: 0.88rem;
}

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

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.62rem 1.3rem;
    border-radius: 10px;
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--heading);
    font-weight: 600;
    font-size: 0.98rem;
    text-decoration: none;
    cursor: pointer;
    transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}

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

.button--primary {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
    color: #ffffff;
}

:root[data-theme="dark"] .button--primary,
:root:not([data-theme]) .button--primary {
    color: #ffffff;
}

.button--primary:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* --------------------------------------------------------------------------
   Landing page
   -------------------------------------------------------------------------- */

.hero {
    max-width: 84rem;
    margin-inline: auto;
    padding: clamp(2.6rem, 7vw, 5rem) clamp(1rem, 3vw, 2rem) clamp(1.6rem, 4vw, 2.6rem);
    text-align: center;
}

.hero h1 {
    margin: 0 auto;
    max-width: 18ch;
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.04;
}

.hero h1 em {
    font-style: normal;
    color: var(--accent-strong);
}

.hero__lead {
    margin: 1.2rem auto 0;
    max-width: 56ch;
    color: var(--muted);
    font-size: clamp(1.02rem, 1.6vw, 1.18rem);
    line-height: 1.7;
}

.hero__lead span {
    display: block;
}

.hero__lead strong {
    color: var(--heading);
    font-weight: 600;
}

.hero__lead code {
    font-family: var(--font-mono);
    font-size: 0.92em;
}

/* Playground section (landing) */

.playground-section {
    max-width: 84rem;
    margin-inline: auto;
    padding: clamp(1rem, 3vw, 2rem) clamp(1rem, 3vw, 2rem) clamp(1.2rem, 3vw, 2rem);
}

.playground-section__head {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
    margin-bottom: 0.8rem;
}

.playground-section__head h2 {
    margin: 0;
    font-size: 1.15rem;
}

.playground-section__hint {
    margin: 0;
    color: var(--faint);
    font-size: 0.9rem;
}

.playground-frame {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.playground {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.85fr);
}

.editor-column {
    display: grid;
    grid-template-rows: var(--playground-header-height) minmax(0, 1fr);
    min-width: 0;
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    height: var(--playground-header-height);
    padding: 0.45rem 0.75rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.toolbar-spacer {
    flex: 1;
}

.toolbar select {
    max-width: 14rem;
    height: 2.3rem;
    padding: 0 0.5rem;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
}

.toolbar button {
    height: 2.3rem;
    padding: 0 0.85rem;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--surface);
    color: var(--heading);
    font-weight: 600;
    cursor: pointer;
}

.toolbar button.primary {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
    color: #ffffff;
}

.toolbar button.primary:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.toolbar button[aria-pressed="true"] {
    border-color: var(--accent-2);
    color: var(--accent-2-strong);
}

.toolbar button:disabled {
    opacity: 0.55;
    cursor: default;
}

#editor {
    flex: 1;
    min-height: 26rem;
    background: var(--editor-bg);
}

.cm-editor {
    height: 100%;
    background: var(--editor-bg);
    color: var(--text);
    font-size: 0.92rem;
}

.cm-scroller {
    font-family: var(--font-mono);
    line-height: 1.55;
}

.cm-gutters {
    background: var(--editor-gutter) !important;
    color: var(--faint) !important;
    border-right: 1px solid var(--border) !important;
}

.cm-tooltip,
.cm-tooltip.pypie-hover,
.cm-tooltip-hover {
    max-width: min(34rem, 80vw);
    background: var(--surface) !important;
    color: var(--text) !important;
    border: 1px solid var(--border-strong) !important;
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 0.45rem 0.6rem;
    font: 0.82rem/1.5 var(--font-mono);
}

.cm-tooltip .pypie-hover {
    white-space: pre-wrap;
}

.side-column {
    position: relative;
    display: grid;
    grid-template-rows: var(--playground-header-height) minmax(0, 1fr);
    min-width: 0;
    min-height: 0;
    background: var(--surface);
}

.side-column::before {
    content: "";
    position: absolute;
    inset-block: 0;
    inset-inline-start: 0;
    z-index: 2;
    width: 1px;
    background: var(--border-strong);
    pointer-events: none;
}

.side-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    height: var(--playground-header-height);
    padding: 0.45rem 0.9rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.status {
    color: var(--muted);
    font-size: 0.88rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.side-body {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 0.9rem;
}

.combined-panel {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

#diagnostics {
    white-space: pre-wrap;
    font-family: var(--font-mono);
    font-size: 0.86rem;
    color: var(--danger);
}

#diagnostics:empty {
    display: none;
}

#output {
    margin: 0;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    font-family: var(--font-mono);
    font-size: 0.86rem;
    color: var(--text);
}

.empty-state {
    color: var(--faint);
    font-size: 0.9rem;
}

.diagnostic-item {
    border-left: 3px solid var(--danger);
    padding: 0.25rem 0 0.25rem 0.5rem;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.45;
}

/* --------------------------------------------------------------------------
   Documentation pages
   -------------------------------------------------------------------------- */

.doc-shell {
    max-width: 84rem;
    margin-inline: auto;
    display: grid;
    grid-template-columns: 15rem minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
    padding: clamp(1.5rem, 4vw, 2.75rem) clamp(1rem, 3vw, 2rem) 3rem;
}

.doc-nav {
    position: sticky;
    top: 4.6rem;
    align-self: start;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    padding-right: 0.5rem;
}

.doc-nav__title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--faint);
    margin-bottom: 0.8rem;
}

.doc-nav a {
    display: block;
    color: var(--muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.94rem;
    line-height: 1.4;
    padding: 0.32rem 0.7rem;
    margin-left: -0.7rem;
    border-left: 2px solid transparent;
    border-radius: 0 6px 6px 0;
    transition: color 120ms ease, background 120ms ease;
}

.doc-nav a:hover {
    color: var(--heading);
    background: var(--accent-soft);
}

.doc-nav a[aria-current="page"] {
    color: var(--accent-strong);
    border-left-color: var(--accent);
    font-weight: 600;
}

.doc-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 13rem;
    gap: clamp(1.25rem, 3vw, 2.5rem);
    align-items: start;
}

.doc-content {
    min-width: 0;
    line-height: 1.7;
}

.doc-header {
    margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
    padding-bottom: clamp(1rem, 2.5vw, 1.4rem);
}

.doc-eyebrow {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-strong);
}

.doc-header h1 {
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    margin: 0.5rem 0 0;
    letter-spacing: -0.02em;
}

.doc-lead {
    font-size: clamp(1rem, 1.8vw, 1.12rem);
    margin: 0.8rem 0 0;
    color: var(--muted);
    white-space: pre-line;
}

/* Dialog (tutorial chapters) */

.lesson-chat__intro {
    margin: 1.4rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.chat-thread {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 72ch;
}

.chat-row {
    display: flex;
    width: 100%;
}

.chat-row--left {
    padding-right: clamp(1.2rem, 4vw, 3rem);
}

.chat-row--right {
    padding-left: clamp(1.2rem, 4vw, 3rem);
}

.chat-bubble {
    width: 100%;
    position: relative;
    border: 1px solid;
    border-radius: 12px;
    padding: 0.85rem 1.05rem 0.95rem;
}

.chat-bubble--left {
    background: var(--chat-left-bg);
    border-color: var(--chat-left-border);
    border-bottom-left-radius: 4px;
    box-shadow: var(--shadow-soft);
}

.chat-bubble--right {
    background: var(--chat-right-bg);
    border-color: var(--chat-right-border);
    border-bottom-right-radius: 4px;
}

.chat-bubble__index {
    position: absolute;
    top: 0.55rem;
    right: 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--faint);
    pointer-events: none;
}

.chat-bubble__speaker {
    margin: 0 0 0.3rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--faint);
}

.chat-bubble--right .chat-bubble__speaker {
    color: var(--accent-strong);
}

.chat-bubble__text {
    margin: 0;
}

.chat-bubble__text + .chat-bubble__text {
    margin-top: 0.55rem;
}

.chat-bubble__link,
.manual-link {
    color: var(--accent-strong);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--accent);
}

.chat-bubble__figure {
    margin: 0.75rem 0 0;
}

.chat-bubble__image {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.chat-bubble .doc-code,
.chat-bubble__fenced-code {
    margin: 0.7rem 0 0;
    border-radius: 8px;
}

/* Manual / reference pages */

.manual-intro {
    margin-top: 0;
    max-width: 72ch;
}

.manual-intro:empty {
    display: none;
}

.manual-sections {
    display: flex;
    flex-direction: column;
    gap: clamp(1.9rem, 4vw, 2.6rem);
    margin-top: clamp(1.8rem, 4vw, 2.4rem);
    max-width: 72ch;
}

.manual-section {
    scroll-margin-top: 5rem;
}

.manual-section h2,
.doc-content section h2 {
    font-size: clamp(1.18rem, 2vw, 1.4rem);
    margin: 0 0 0.7rem;
    padding-bottom: 0.45rem;
    border-bottom: 1px solid var(--border);
}

.manual-prose {
    margin: 0;
}

.manual-prose + .manual-prose {
    margin-top: 0.8rem;
}

/* Inline + block code */

.doc-lead code,
.manual-prose code,
.chat-bubble__text code,
.lesson-chat__intro code,
.keyword-panel code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    white-space: nowrap;
    word-break: normal;
    overflow-wrap: normal;
    background: var(--inline-code-bg);
    border: 1px solid var(--inline-code-border);
    border-radius: 4px;
    padding: 0.08rem 0.32rem;
}

.doc-code,
.doc-plain-code {
    margin: 0.8rem 0 0;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 10px;
    padding: 0.9rem 1.05rem;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--code-base);
    white-space: pre;
}

.doc-code code,
.doc-plain-code code,
.manual-fenced-code code,
.chat-bubble__fenced-code code {
    font: inherit;
    color: inherit;
}

.doc-code .kw {
    color: var(--code-kw);
    font-weight: 600;
}

.doc-code .fn {
    color: var(--code-fn);
}

.doc-code .type {
    color: var(--code-type);
}

.doc-code .code-var {
    color: var(--code-base);
}

.doc-code .num {
    color: var(--code-num);
}

.doc-code .op {
    color: var(--code-op);
}

.doc-code .comment {
    color: var(--code-comment);
    font-style: italic;
}

/* Keyword side panel */

.doc-keywords {
    align-self: start;
    position: sticky;
    top: 4.6rem;
}

.keyword-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem 1.1rem;
}

.keyword-panel__title {
    margin: 0 0 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--faint);
}

.keyword-panel__list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.keyword-panel__item {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.keyword-panel__item code {
    background: transparent;
    border: 0;
    padding: 0;
}

.keyword-panel__item--empty {
    color: var(--faint);
    font-family: var(--font-sans);
}

.keyword-panel__link {
    color: var(--text);
    text-decoration: none;
}

.keyword-panel__link:hover {
    color: var(--accent-strong);
}

/* Prev / next pager */

.doc-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.9rem;
    margin-top: clamp(2.2rem, 5vw, 3.2rem);
    max-width: 72ch;
}

.doc-pager__link {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.85rem 1.05rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 120ms ease;
    min-width: 0;
}

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

.doc-pager__link--next {
    grid-column: 2;
    text-align: right;
}

.doc-pager__label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--faint);
}

.doc-pager__title {
    color: var(--heading);
    font-weight: 600;
    font-size: 0.96rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Hover type tooltip (AST code blocks) */

.code-type-tooltip {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -130%);
    background: var(--tooltip-bg);
    color: var(--tooltip-text);
    border: 1px solid var(--tooltip-border);
    border-radius: 6px;
    padding: 0.28rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    transition: opacity 120ms ease;
    white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Simple standalone pages and writing-template helpers
   -------------------------------------------------------------------------- */

.page {
    min-height: calc(100vh - 12rem);
    display: grid;
    place-items: center;
    padding: 3rem 1.5rem;
    text-align: center;
}

.page h1 {
    font-size: clamp(2.1rem, 5vw, 3.4rem);
    margin: 0 0 1rem;
}

.page p {
    max-width: 42rem;
    margin: 0 auto;
    color: var(--muted);
}

.page .btn,
.page .button {
    display: inline-flex;
    margin-top: 1.5rem;
}

.page .btn {
    align-items: center;
    padding: 0.62rem 1.3rem;
    border-radius: 10px;
    border: 1px solid var(--accent-strong);
    background: var(--accent-strong);
    color: #ffffff;
    font-weight: 600;
    text-decoration: none;
}

.callout {
    border-left: 3px solid var(--accent);
    padding: 0.85rem 1rem;
    background: var(--accent-soft);
    border-radius: 0 8px 8px 0;
}

.figure-frame {
    min-height: 12rem;
    display: grid;
    place-items: center;
    background: var(--surface-2);
    border: 1px dashed var(--border-strong);
    border-radius: 10px;
    color: var(--muted);
}

figcaption {
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 0.6rem;
}

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

@media (max-width: 1100px) {
    .doc-main {
        grid-template-columns: minmax(0, 1fr);
    }

    .doc-keywords {
        position: static;
        order: -1;
        max-width: 72ch;
    }

    .keyword-panel__list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.4rem 1rem;
    }
}

@media (max-width: 960px) {
    .playground {
        grid-template-columns: 1fr;
    }

    .editor-column {
        border-bottom: 1px solid var(--border);
    }

    .side-column::before {
        display: none;
    }

    #editor {
        min-height: 20rem;
    }

    .side-body {
        min-height: 9rem;
    }

    .doc-shell {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .doc-nav {
        position: static;
        max-height: none;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 0.2rem 0.9rem;
        padding: 0.8rem 1rem;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 12px;
    }

    .doc-nav__title {
        margin-bottom: 0;
        width: 100%;
    }

    .doc-nav a {
        margin-left: 0;
        padding: 0.2rem 0;
        border-left: 0;
    }

    .doc-nav a[aria-current="page"] {
        border-bottom: 2px solid var(--accent);
        border-radius: 0;
    }
}

@media (max-width: 640px) {
    .chat-row--left,
    .chat-row--right {
        padding-left: 0;
        padding-right: 0;
    }

    .doc-pager {
        grid-template-columns: 1fr;
    }

    .doc-pager__link--next {
        grid-column: auto;
        text-align: left;
    }

    .site-footer__note {
        margin-left: 0;
    }

}
