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lean/theme/fonts/SIL Open Font License.txt

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+Copyright (C) Authors of original metafont fonts:
+Donald Ervin Knuth (cm, concrete fonts)
+1995, 1996, 1997 J"org Knappen, 1990, 1992 Norbert Schwarz (ec fonts)
+1992-2006 A.Khodulev, O.Lapko, A.Berdnikov, V.Volovich (lh fonts)
+1997-2005 Claudio Beccari (cb greek fonts)
+2002 FUKUI Rei (tipa fonts)
+2003-2005 Han The Thanh (Vietnamese fonts)
+1996-2005 Walter Schmidt (cmbright fonts)
+
+Copyright (C) 2003-2009, Andrey V. Panov (panov@canopus.iacp.dvo.ru),
+with Reserved Font Family Name "Computer Modern Unicode fonts".
+
+
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at: http://scripts.sil.org/OFL
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting, or substituting -- in part or in whole -- any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment.
+
+"Author" refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software shall not be used to promote, endorse or advertise any Modified Version, except to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s) or with their explicit written permission.
+
+5) The Font Software, modified or unmodified, in part or in whole, must be distributed entirely under this license, and must not be distributed under any other license. The requirement for fonts to remain under this license does not apply to any document created using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.

lean/theme/mathew.css

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+/* ==================================================================
+   Mathew — the wiki's skin for lean4web.
+
+   Lean4web paints its whole interface — the top bar, menus, modals and
+   the Monaco editor itself — with the CSS custom properties its VS Code
+   theme defines (`--vscode-*`), and its app root carries the
+   `monaco-editor` class so those variables reach every corner of the
+   page. This layer therefore does not fight the editor's styling: it
+   redefines that same vocabulary with the wiki's tokens — Computer
+   Modern for the chrome, the wiki's paper-and-slate surfaces, its
+   violet for focus, selection and links.
+
+   The wiki opens the frame as ?theme=light|dark and the companion
+   theme-init.js records that on <html data-mathew-theme> before the
+   first paint; with no parameter (a direct visit) the browser's
+   preference decides, exactly as lean4web's own default does. The
+   editor thus opens matching the page around it; the wiki's own theme
+   switch takes effect on the frame's next mount, not mid-edit — a live
+   swap would tear down a running Lean session.
+
+   The rules that target elements directly (rather than through the
+   --vscode variables) carry an `html[data-mathew-theme]` prefix: the
+   client bundles its own stylesheets through JavaScript, which can land
+   after this link, so specificity, not source order, is what holds.
+   ================================================================== */
+
+/* ---------- the wiki's typeface ---------- */
+/* Computer Modern, the wiki's reading face. CMU ships only two weights,
+   so intermediate weights map onto real faces the way the wiki's own
+   stylesheet does. */
+@font-face {
+  font-family: 'Computer Modern';
+  src: url('/fonts/cmunrm.ttf') format('truetype');
+  font-weight: 100 550;
+  font-style: normal;
+  font-display: swap;
+}
+@font-face {
+  font-family: 'Computer Modern';
+  src: url('/fonts/cmunti.ttf') format('truetype');
+  font-weight: 100 550;
+  font-style: italic;
+  font-display: swap;
+}
+@font-face {
+  font-family: 'Computer Modern';
+  src: url('/fonts/cmunbx.ttf') format('truetype');
+  font-weight: 551 900;
+  font-style: normal;
+  font-display: swap;
+}
+@font-face {
+  font-family: 'Computer Modern';
+  src: url('/fonts/cmunbi.ttf') format('truetype');
+  font-weight: 551 900;
+  font-style: italic;
+  font-display: swap;
+}
+
+/* ---------- the wiki's palette, as the editor knows it ---------- */
+html[data-mathew-theme='light'], html:not([data-mathew-theme]) {
+  color-scheme: light;
+  --mw-bg: #f7f8fb;
+  --mw-bg-elev: #ffffff;
+  --mw-surface: #ffffff;
+  --mw-surface-2: #eef1f7;
+  --mw-input-bg: #ffffff;
+  --mw-border: #e2e6ef;
+  --mw-text: #1b2130;
+  --mw-muted: #5b6478;
+  --mw-accent: #4f5fe8;
+  --mw-accent-strong: #3d4dd6;
+  --mw-on-accent: #ffffff;
+  --mw-danger: #d1344b;
+  --mw-warning: #d97706;
+  --mw-shadow: 0 4px 12px rgb(16 24 40 / 8%), 0 16px 40px -12px rgb(16 24 40 / 18%);
+}
+
+html[data-mathew-theme='dark'] {
+  color-scheme: dark;
+  --mw-bg: #0a0c12;
+  --mw-bg-elev: #10131c;
+  --mw-surface: #141826;
+  --mw-surface-2: #1a2030;
+  --mw-input-bg: #0c0f16;
+  --mw-border: #232a3c;
+  --mw-text: #e7eaf3;
+  --mw-muted: #99a1b5;
+  --mw-accent: #7c8cff;
+  --mw-accent-strong: #99a5ff;
+  --mw-on-accent: #0a0c12;
+  --mw-danger: #f47085;
+  --mw-warning: #f5a83c;
+  --mw-shadow: 0 4px 16px rgb(0 0 0 / 40%), 0 24px 48px -16px rgb(0 0 0 / 55%);
+}
+
+/* ---------- the same vocabulary, in Mathew's colours ----------
+   The app root (`.app.monaco-editor`) is where the editor's theme
+   service publishes --vscode-*; redefining the same names on it, with
+   an attribute selector for company, outranks the generated rules and
+   the whole interface — editor included — follows the wiki instead. */
+html[data-mathew-theme] body,
+html[data-mathew-theme] .monaco-editor {
+  /* the editor paper */
+  --vscode-editor-background: var(--mw-surface);
+  --vscode-editor-foreground: var(--mw-text);
+  --vscode-editor-selectionBackground: color-mix(in srgb, var(--mw-accent) 26%, transparent);
+  --vscode-editorCursor-foreground: var(--mw-accent);
+  --vscode-editorLineNumber-activeForeground: var(--mw-accent);
+  --vscode-editorGutter-background: var(--mw-surface);
+
+  /* chrome: the top bar, menus, popups, hover */
+  --vscode-menu-background: var(--mw-bg-elev);
+  --vscode-menu-foreground: var(--mw-text);
+  --vscode-menu-separatorBackground: var(--mw-border);
+  --vscode-menu-selectionBackground: var(--mw-surface-2);
+  --vscode-menu-selectionForeground: var(--mw-text);
+  --vscode-panel-border: var(--mw-border);
+  --vscode-widget-shadow: var(--mw-shadow);
+
+  /* hovers and suggestions the editor paints */
+  --vscode-editorWidget-border: var(--mw-border);
+  --vscode-editorHoverWidget-background: var(--mw-bg-elev);
+  --vscode-editorHoverWidget-foreground: var(--mw-text);
+  --vscode-editorHoverWidget-border: var(--mw-border);
+
+  /* form controls, buttons, links */
+  --vscode-input-background: var(--mw-input-bg);
+  --vscode-input-foreground: var(--mw-text);
+  --vscode-inputOption-activeForeground: var(--mw-accent);
+  --vscode-button-background: var(--mw-accent);
+  --vscode-button-hoverBackground: var(--mw-accent-strong);
+  --vscode-button-foreground: var(--mw-on-accent);
+  --vscode-button-border: transparent;
+  --vscode-textLink-foreground: var(--mw-accent-strong);
+  --vscode-focusBorder: var(--mw-accent);
+
+  /* lists (the file and project pickers) */
+  --vscode-list-hoverBackground: var(--mw-surface-2);
+  --vscode-list-dropBackground: color-mix(in srgb, var(--mw-accent) 12%, transparent);
+
+  /* the editor draws its own scrollbars — same subtle wash as the wiki's */
+  --vscode-scrollbarSlider-background: color-mix(in srgb, var(--mw-text) 18%, transparent);
+  --vscode-scrollbarSlider-hoverBackground: color-mix(in srgb, var(--mw-text) 30%, transparent);
+  --vscode-scrollbarSlider-activeBackground: color-mix(in srgb, var(--mw-text) 40%, transparent);
+
+  /* messages and marks, in the wiki's reds and ambers */
+  --vscode-notifications-background: var(--mw-bg-elev);
+  --vscode-notificationsErrorIcon-foreground: var(--mw-danger);
+  --vscode-editorError-foreground: var(--mw-danger);
+  --vscode-editorWarning-foreground: var(--mw-warning);
+  --vscode-editorWarning-background: color-mix(in srgb, var(--mw-warning) 14%, transparent);
+  --vscode-editorOverviewRuler-warningForeground: var(--mw-warning);
+
+  /* inline code, as the wiki sets it */
+  --vscode-textPreformat-background: var(--mw-surface-2);
+  --vscode-textPreformat-foreground: var(--mw-text);
+}
+
+/* ---------- the chrome, wearing the wiki ---------- */
+/* The body: index.css paints it #2b2b2b / white by media query; the
+   wiki's own ground wins that tie by specificity. */
+html[data-mathew-theme] body {
+  margin: 0;
+  font-family: 'Computer Modern', 'CMU Serif', Georgia, 'Times New Roman', serif;
+  background: var(--mw-bg);
+  color: var(--mw-text);
+}
+
+/* Form controls answer to the system font unless told; the editor keeps
+   its monospace (the wiki sets its own code the same way). */
+html[data-mathew-theme] button,
+html[data-mathew-theme] input,
+html[data-mathew-theme] select,
+html[data-mathew-theme] textarea {
+  font-family: inherit;
+}
+
+/* The top bar: the wiki's hairline, and its menu row rounded to a chip */
+html[data-mathew-theme] nav {
+  border-bottom: 1px solid var(--mw-border);
+}
+html[data-mathew-theme] nav .nav-link,
+html[data-mathew-theme] nav select {
+  border-radius: 8px;
+}
+
+/* Syntax errors and warnings read in the wiki's danger red / amber */
+html[data-mathew-theme] .loading-ring:after {
+  border-color: var(--mw-accent) transparent var(--mw-accent) transparent;
+}
+
+/* Selection, like the wiki's — accent wash, not system blue */
+html[data-mathew-theme] ::selection {
+  background: color-mix(in srgb, var(--mw-accent) 30%, transparent);
+}
+
+/* Scrollbars, the wiki's subtle shape (mirrors its _base.scss) */
+html[data-mathew-theme] ::-webkit-scrollbar {
+  width: 11px;
+  height: 10px;
+}
+html[data-mathew-theme] ::-webkit-scrollbar-thumb {
+  background: color-mix(in srgb, var(--mw-text) 18%, transparent);
+  border-radius: 8px;
+  border: 3px solid transparent;
+  background-clip: content-box;
+}
+html[data-mathew-theme] ::-webkit-scrollbar-thumb:hover {
+  background: color-mix(in srgb, var(--mw-text) 30%, transparent);
+  background-clip: content-box;
+}
+html[data-mathew-theme] ::-webkit-scrollbar-track {
+  background: transparent;
+}

lean/theme/theme-init.js

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+/* Mathew's theme handshake with the wiki (see mathew.css, its stylesheet).
+ *
+ * The wiki opens this frame as ?theme=light|dark — the editor cannot see
+ * the page around it (another origin), but it can at least open wearing
+ * the same mood. Without the parameter — a direct visit — the browser's
+ * preference decides, the same rule lean4web follows for its own default.
+ *
+ * Runs synchronously in <head>, before the first paint, so the page never
+ * flashes the wrong palette; <html data-mathew-theme> is the hook the
+ * stylesheet's overrides hang on. */
+(function () {
+  var param = null
+  try {
+    param = new URLSearchParams(window.location.search).get('theme')
+  } catch (e) {
+    /* an engine without URLSearchParams gets the fallback below */
+  }
+  var theme = param === 'light' || param === 'dark'
+    ? param
+    : window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
+      ? 'dark'
+      : 'light'
+  document.documentElement.setAttribute('data-mathew-theme', theme)
+})()