/* SPDX-FileCopyrightText: 2026 Progmasoft <support@progmasoft.com> */
/* SPDX-License-Identifier: AGPL-3.0-or-later WITH AdditionRef-Progmasoft-Patent-Grant-1.1 */

/* Light is the default, as on progmasoft.com; dark is a choice the visitor makes and keeps. */
:root {
  --brand-950: #021f26;
  --brand-900: #032f39;
  --brand-800: #064552;
  --brand-700: #0a5c6c;
  --brand-600: #0d7486;
  --brand-100: #e3f1f3;
  --gold: #f2b84b;
  --gold-strong: #e09a1c;
  --ink-950: #10181b;
  --ink-700: #334247;
  --ink-500: #5a6a6f;
  --line: #d8e2e4;
  --surface: #ffffff;
  --surface-muted: #f3f7f8;
  --surface-raised: #ffffff;
  --header: rgb(255 255 255 / 92%);
  --link: #0a6577;
  --code-bg: #0b2a31;
  --code-ink: #e3eff1;
  --code-muted: #8fb0b6;
  --shadow: 0 18px 48px rgb(3 47 57 / 14%);
  --radius: 10px;
  --shell: 1180px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --brand-100: #12303a;
  --ink-950: #eef5f6;
  --ink-700: #c3d1d4;
  --ink-500: #8ea2a6;
  --line: #23383d;
  --surface: #0a1416;
  --surface-muted: #0f1d20;
  --surface-raised: #122428;
  --header: rgb(10 20 22 / 92%);
  --link: #6fd0de;
  --code-bg: #061a1f;
  --shadow: 0 18px 48px rgb(0 0 0 / 40%);
  color-scheme: dark;
}

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

html {
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink-950);
  font-family:
    "Segoe UI Variable",
    "Segoe UI",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Noto Sans",
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

button {
  font: inherit;
  color: inherit;
}

code,
pre {
  font-family: "Cascadia Code", "JetBrains Mono", "SF Mono", Consolas, monospace;
}

.shell {
  width: min(100% - 32px, var(--shell));
  margin-inline: auto;
}

.skip {
  position: absolute;
  inset-inline-start: 16px;
  top: -48px;
  z-index: 100;
  padding: 8px 14px;
  border-radius: 6px;
  background: var(--gold);
  color: var(--brand-950);
  font-weight: 600;
}

.skip:focus {
  top: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 650;
  text-decoration: none;
  transition:
    background-color 0.15s,
    border-color 0.15s,
    transform 0.15s;
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.button-gold {
  background: var(--gold);
  color: var(--brand-950);
}

.button-gold:hover {
  background: #f6c768;
}

.button-ghost {
  border-color: rgb(255 255 255 / 35%);
  color: #fff;
}

.button-ghost:hover {
  border-color: rgb(255 255 255 / 70%);
  background: rgb(255 255 255 / 6%);
}

.button-brand {
  background: var(--brand-900);
  color: #fff;
}

:root[data-theme="dark"] .button-brand {
  background: var(--gold);
  color: var(--brand-950);
}

.section {
  padding-block: 88px;
}

.section-muted {
  background: var(--surface-muted);
  border-block: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin: 0 0 40px;
}

.section-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-heading p {
  margin: 0;
  color: var(--ink-700);
  font-size: 1.1rem;
}

/* Code keeps its left-to-right order in every language. */
.code {
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 8%);
  border-radius: var(--radius);
  background: var(--code-bg);
  color: var(--code-ink);
  direction: ltr;
  text-align: left;
}

.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px 8px 16px;
  border-bottom: 1px solid rgb(255 255 255 / 8%);
  color: var(--code-muted);
  font-size: 0.8rem;
}

.code-bar button {
  padding: 3px 10px;
  border: 1px solid rgb(255 255 255 / 15%);
  border-radius: 6px;
  background: transparent;
  color: var(--code-muted);
  cursor: pointer;
}

.code-bar button:hover {
  color: var(--code-ink);
  border-color: rgb(255 255 255 / 35%);
}

.code pre {
  margin: 0;
  padding: 16px 18px 18px;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.65;
}

@media (max-width: 720px) {
  .section {
    padding-block: 60px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

/* The text of a document rendered from Markdown. */
.prose {
  color: var(--ink-950);
  font-size: 1.02rem;
}

.prose h2 {
  margin: 48px 0 14px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.prose h3 {
  margin: 32px 0 10px;
  font-size: 1.18rem;
}

.prose h2 a,
.prose h3 a,
.prose h4 a {
  color: inherit;
}

.prose p,
.prose ul,
.prose ol {
  margin: 14px 0;
}

.prose li + li {
  margin-top: 4px;
}

.prose :not(pre) > code {
  padding: 0.12em 0.38em;
  border-radius: 5px;
  background: var(--surface-muted);
  border: 1px solid var(--line);
  font-size: 0.88em;
  white-space: nowrap;
  direction: ltr;
  unicode-bidi: isolate;
}

.prose table {
  display: block;
  width: 100%;
  margin: 20px 0;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.prose th,
.prose td {
  padding: 9px 14px;
  border: 1px solid var(--line);
  text-align: start;
  vertical-align: top;
}

.prose th {
  background: var(--surface-muted);
  font-weight: 650;
}

.prose td code {
  white-space: normal;
}

.prose pre code {
  white-space: pre;
}

.prose blockquote {
  margin: 20px 0;
  padding: 2px 18px;
  border-inline-start: 4px solid var(--line);
  color: var(--ink-700);
}