/* ==========================================================================
   m2Dashboard — общие стили сайта
   ========================================================================== */

:root {
  /* фирменные цвета */
  --navy:       #173753;
  --navy-2:     #0F2740;
  --blue:       #4B8BBE;
  --blue-600:   #306998;
  --yellow:     #FFD43B;
  --yellow-600: #F0B90B;

  /* светлая тема */
  --text:      #212529;
  --text-2:    #46535F;
  --muted:     #6C757D;
  --bg:        #FFFFFF;
  --bg-alt:    #F6F8FA;
  --card:      #FFFFFF;
  --border:    #DEE2E6;
  --border-2:  #E9ECEF;
  --code-bg:   #F3F5F7;
  --link:      #1B6EA8;
  --shadow:    0 1px 2px rgba(23,55,83,.06), 0 4px 14px rgba(23,55,83,.05);
  --shadow-lg: 0 2px 6px rgba(23,55,83,.08), 0 12px 32px rgba(23,55,83,.10);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --text:     #E6EDF3;
    --text-2:   #B4C2CE;
    --muted:    #8A98A6;
    --bg:       #0F1720;
    --bg-alt:   #141E28;
    --card:     #16212C;
    --border:   #26333F;
    --border-2: #1F2B36;
    --code-bg:  #101A23;
    --link:     #6FB6E8;
    --shadow:    0 1px 2px rgba(0,0,0,.4), 0 4px 14px rgba(0,0,0,.25);
    --shadow-lg: 0 2px 6px rgba(0,0,0,.45), 0 12px 32px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

img { max-width: 100%; height: auto; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; width: 100%; }
.wrap-narrow { max-width: 840px; margin: 0 auto; padding: 0 24px; width: 100%; }

main { flex: 1 0 auto; }

/* ==========================================================================
   Шапка
   ========================================================================== */

.nav {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 3px solid var(--yellow);
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; gap: 26px;
  min-height: 62px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: #fff; font-size: 19px; font-weight: 700; letter-spacing: -.01em;
  flex: none;
}
.brand:hover { text-decoration: none; color: #fff; }
.brand-mark {
  width: 32px; height: 32px; flex: none;
  border-radius: 8px;
  background: linear-gradient(150deg, var(--blue) 0%, var(--blue-600) 100%);
  display: flex; align-items: center; justify-content: center;
}
.brand-mark svg { width: 20px; height: 20px; }
.brand em { color: var(--yellow); font-style: normal; }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none; margin: 0; padding: 0;
  flex: 1;
}
.nav-links a {
  display: block; padding: 8px 13px; border-radius: 6px;
  color: #C6D4E0; font-size: 15px; font-weight: 500;
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: rgba(255,255,255,.09); color: #fff; text-decoration: none; }
.nav-links a.active { color: var(--yellow); background: rgba(255,212,59,.10); }

.nav-cta {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--yellow); color: var(--navy-2);
  padding: 8px 16px; border-radius: 6px;
  font-size: 15px; font-weight: 600; flex: none;
  transition: background .15s;
}
.nav-cta:hover { background: var(--yellow-600); color: var(--navy-2); text-decoration: none; }
.nav-cta svg { width: 17px; height: 17px; }

.nav-toggle {
  display: none;
  background: none; border: 0; padding: 8px; cursor: pointer; color: #fff;
  margin-left: auto;
}
.nav-toggle svg { width: 24px; height: 24px; display: block; }

@media (max-width: 880px) {
  .nav-inner { flex-wrap: wrap; gap: 0; }
  .nav-toggle { display: block; }
  .nav-links {
    flex-basis: 100%; flex-direction: column; align-items: stretch;
    gap: 0; padding: 6px 0 12px;
  }
  .nav-links a { padding: 11px 12px; }
  .nav-cta { margin: 0 0 14px; align-self: flex-start; }
  .nav[data-open="false"] .nav-links,
  .nav[data-open="false"] .nav-cta { display: none; }
}

/* ==========================================================================
   Кнопки
   ========================================================================== */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px; border-radius: 6px;
  font-size: 16px; font-weight: 600; line-height: 1.2;
  border: 1px solid transparent; cursor: pointer;
  font-family: inherit;
  transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { text-decoration: none; }
.btn svg { width: 18px; height: 18px; flex: none; }

.btn-primary { background: var(--blue-600); color: #fff; }
.btn-primary:hover { background: #275880; color: #fff; }

.btn-yellow { background: var(--yellow); color: var(--navy-2); }
.btn-yellow:hover { background: var(--yellow-600); color: var(--navy-2); }

.btn-outline { background: transparent; color: var(--link); border-color: var(--border); }
.btn-outline:hover { background: var(--bg-alt); }

.btn-light { background: rgba(255,255,255,.10); color: #fff; border-color: rgba(255,255,255,.28); }
.btn-light:hover { background: rgba(255,255,255,.18); color: #fff; }

.btn-sm { padding: 7px 14px; font-size: 14px; border-radius: 5px; }
.btn-sm svg { width: 15px; height: 15px; }

.btn-block { width: 100%; }

/* ==========================================================================
   Плашки
   ========================================================================== */

.pill {
  display: inline-block; padding: 3px 11px; border-radius: 20px;
  font-size: 13px; font-weight: 600; line-height: 1.5;
  background: var(--bg-alt); color: var(--text-2); border: 1px solid var(--border);
}
.pill-blue   { background: var(--blue-600); color: #fff; border-color: transparent; }
.pill-yellow { background: var(--yellow); color: var(--navy-2); border-color: transparent; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  background: var(--navy);
  color: #fff;
  padding: 64px 0 72px;
  background-image: radial-gradient(900px 380px at 82% -10%, rgba(75,139,190,.32), transparent 65%);
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center;
}
@media (max-width: 920px) {
  .hero { padding: 44px 0 52px; }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
}
.hero h1 {
  font-size: 46px; font-weight: 800; margin: 0 0 18px;
  letter-spacing: -.025em; line-height: 1.12; color: #fff;
}
.hero h1 em { color: var(--yellow); font-style: normal; }
@media (max-width: 600px) { .hero h1 { font-size: 34px; } }
.hero .lead { font-size: 19px; color: #C3D3E0; margin: 0 0 28px; }
.eyebrow {
  display: inline-block; margin-bottom: 16px;
  font-size: 13px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase;
  color: var(--yellow);
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-art {
  border-radius: 14px; overflow: hidden;
  box-shadow: 0 18px 46px rgba(0,0,0,.34);
  border: 1px solid rgba(255,255,255,.14);
  display: block; line-height: 0;
}
.hero-art picture { display: block; }
.hero-art img { display: block; width: 100%; height: auto; }

/* компактная шапка внутренних страниц */
.page-head {
  background: var(--navy);
  color: #fff;
  padding: 40px 0 46px;
  background-image: radial-gradient(700px 300px at 85% -20%, rgba(75,139,190,.28), transparent 65%);
}
.page-head h1 {
  font-size: 38px; font-weight: 800; margin: 0 0 12px;
  letter-spacing: -.02em; color: #fff;
}
@media (max-width: 600px) { .page-head h1 { font-size: 29px; } }
.page-head p { font-size: 18px; color: #C3D3E0; margin: 0; max-width: 720px; }
.crumbs { font-size: 14px; color: #93A9BC; margin: 0 0 14px; }
.crumbs a { color: #93A9BC; }
.crumbs a:hover { color: var(--yellow); text-decoration: none; }
.crumbs i { font-style: normal; margin: 0 7px; opacity: .6; }

/* ==========================================================================
   Секции
   ========================================================================== */

section.block { padding: 62px 0; }
section.block.alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
}

.section-title {
  font-size: 30px; font-weight: 700; margin: 0 0 10px;
  letter-spacing: -.018em;
}
.section-title::after {
  content: ""; display: block; width: 46px; height: 3px;
  background: var(--yellow); border-radius: 2px; margin-top: 12px;
}
.section-sub { color: var(--muted); margin: 0 0 34px; font-size: 17px; }

/* ==========================================================================
   Карточки
   ========================================================================== */

.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 780px) { .cards { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 26px; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.card h3 { margin: 0 0 8px; font-size: 21px; font-weight: 700; }
.card .desc { color: var(--text-2); font-size: 15.5px; margin: 0 0 20px; flex: 1; }

.ver-line { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.ver-meta { color: var(--muted); font-size: 14px; }

.card-actions { display: flex; flex-direction: column; gap: 9px; }
.card-more {
  margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border-2);
  font-size: 15px;
}
.card-more a { font-weight: 600; }

/* возможности */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .features { grid-template-columns: 1fr; } }
.feature {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 22px;
}
.feature-ico {
  width: 40px; height: 40px; border-radius: 9px; margin-bottom: 14px;
  background: rgba(75,139,190,.13); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
}
.feature-ico svg { width: 21px; height: 21px; }
.feature h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; }
.feature p { margin: 0; color: var(--text-2); font-size: 15px; }

/* галерея экранов устройства */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 900px) { .shots { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .shots { grid-template-columns: 1fr; } }
.shot {
  margin: 0;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.shot img {
  display: block; width: 100%; height: auto;
  /* Поля того же цвета, что и фон экрана устройства: снимок не упирается
     в край карточки и читается как рамка вокруг дисплея. */
  padding: 6px;
  background: #000;
  /* Снимки сняты в разрешении экрана устройства, 320x240. Масштабируем без
     сглаживания: иначе семисегментные цифры и иконки расплываются. */
  image-rendering: pixelated;
  border-bottom: 1px solid var(--border);
}
.shot figcaption { padding: 15px 18px; }
.shot h3 { margin: 0 0 5px; font-size: 16px; font-weight: 700; }
.shot p { margin: 0; color: var(--text-2); font-size: 14.5px; }

/* шаги «как начать» */
.steps { counter-reset: step; display: grid; gap: 20px; }
.step { display: grid; grid-template-columns: 40px 1fr; gap: 18px; align-items: start; }
.step::before {
  counter-increment: step; content: counter(step);
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--yellow); color: var(--navy-2);
  font-weight: 700; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 5px 0 4px; font-size: 18px; font-weight: 700; }
.step p { margin: 0; color: var(--text-2); font-size: 16px; }

/* ==========================================================================
   Боковая колонка / страницы релизов
   ========================================================================== */

.with-side { display: grid; grid-template-columns: 240px 1fr; gap: 46px; align-items: start; }

/* Колонкам нужен явный min-width: 0.
   По умолчанию у элемента грида min-width: auto, то есть колонка не может стать
   уже своего содержимого. Самый широкий блок кода в руководстве занимает около
   720 px, и на телефоне он растягивал колонку до этой ширины - вместе с ней
   разъезжалось оглавление, а вся страница получала горизонтальную прокрутку.
   С нулём колонка сжимается по экрану, а широкий блок кода прокручивается
   внутри себя, как и задумано его overflow-x: auto. */
.with-side > * { min-width: 0; }
@media (max-width: 900px) {
  .with-side { grid-template-columns: 1fr; gap: 26px; }
  .side { position: static !important; }
}
.side { position: sticky; top: 84px; font-size: 15px; }
.side-title {
  font-size: 12px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--muted); font-weight: 700; margin-bottom: 12px;
}
.side ul { list-style: none; padding: 0; margin: 0; }
.side li { margin-bottom: 2px; }
.side a {
  display: block; padding: 6px 12px; border-radius: 6px;
  color: var(--text-2); border-left: 2px solid transparent;
}
.side a:hover { background: var(--bg-alt); color: var(--text); text-decoration: none; }
.side a.lvl2 { padding-left: 26px; font-size: 14px; }
.side a.active { color: var(--link); border-left-color: var(--yellow); background: var(--bg-alt); }

.release {
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--card); box-shadow: var(--shadow);
  padding: 26px 28px; margin-bottom: 26px;
}
.release-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.release-head h2 { font-size: 25px; font-weight: 700; margin: 0; letter-spacing: -.015em; }
.release-meta { color: var(--muted); font-size: 14.5px; margin: 0 0 20px; }

.files { display: grid; gap: 10px; }
.file-row {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  border: 1px solid var(--border-2); border-radius: 8px;
  background: var(--bg-alt); padding: 13px 16px;
}
.file-info { flex: 1; min-width: 200px; }
.file-name { font-weight: 600; font-size: 15.5px; }
.file-sub { color: var(--muted); font-size: 13px; margin-top: 2px; }
.file-sub code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px; word-break: break-all;
}

.chg-toggle {
  display: inline-flex; align-items: center; gap: 7px;
  margin-top: 18px; font-size: 15px; font-weight: 600; color: var(--link);
  background: none; border: 0; padding: 0; cursor: pointer; font-family: inherit;
}
.chg-toggle svg { width: 14px; height: 14px; transition: transform .2s; }
.chg-toggle[aria-expanded="true"] svg { transform: rotate(90deg); }
.chg-body {
  margin-top: 16px; padding-top: 18px; border-top: 1px solid var(--border-2);
  font-size: 15.5px;
}

/* ==========================================================================
   Markdown
   ========================================================================== */

.md h1 {
  font-size: 30px; font-weight: 700; margin: 52px 0 16px;
  padding-bottom: 11px; border-bottom: 2px solid var(--border);
  letter-spacing: -.018em;
}
.md h1:first-child { margin-top: 0; }
.md h2 { font-size: 22px; font-weight: 700; margin: 36px 0 12px; letter-spacing: -.01em; }
.md h3 { font-size: 18px; font-weight: 700; margin: 26px 0 10px; }
.md { overflow-wrap: break-word; }
.md p { margin: 0 0 15px; color: var(--text-2); }
.md ul, .md ol { margin: 0 0 15px; padding-left: 24px; color: var(--text-2); }
.md li { margin-bottom: 7px; }
.md li > ul, .md li > ol { margin: 7px 0 0; }
.md strong { color: var(--text); font-weight: 700; }
.md code {
  background: var(--code-bg); border-radius: 4px; padding: 2px 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .87em; color: var(--text);
}
.md pre {
  background: var(--code-bg); border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: 8px; padding: 15px 18px; overflow-x: auto; margin: 0 0 18px;
}
.md pre code { background: none; padding: 0; font-size: 14px; line-height: 1.55; }
.md blockquote {
  margin: 0 0 18px; padding: 12px 18px;
  border-left: 4px solid var(--yellow); background: var(--bg-alt);
  border-radius: 0 8px 8px 0; color: var(--text-2);
}
.md blockquote p:last-child { margin-bottom: 0; }

.chg-body h2 { font-size: 16px; font-weight: 700; margin: 22px 0 8px; }
.chg-body h2:first-child { margin-top: 0; }
.chg-body ul { padding-left: 22px; margin: 0; }

.table-wrap { overflow-x: auto; margin: 0 0 18px; }
.md table { border-collapse: collapse; width: 100%; font-size: 15px; }
.md th, .md td { text-align: left; padding: 10px 14px; border: 1px solid var(--border); }
.md th { background: var(--bg-alt); font-weight: 700; white-space: nowrap; }
.md td { color: var(--text-2); vertical-align: top; }

/* ==========================================================================
   Состояния
   ========================================================================== */

.notice {
  border: 1px solid var(--border); background: var(--bg-alt);
  border-left: 4px solid var(--yellow);
  border-radius: 0 8px 8px 0; padding: 20px 22px; color: var(--text-2); font-size: 15.5px;
}
.notice strong { color: var(--text); }
.notice pre {
  background: var(--code-bg); border-radius: 6px; padding: 12px 14px;
  overflow-x: auto; margin: 12px 0 0; font-size: 14px;
}
.skeleton { color: var(--muted); }

/* ==========================================================================
   Подвал
   ========================================================================== */

footer.site {
  background: var(--navy-2);
  color: #A9BCCC;
  padding: 52px 0 0;
  font-size: 15px;
  flex: none;
  border-top: 3px solid var(--yellow);
}
.foot-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px;
  padding-bottom: 40px;
}
@media (max-width: 860px) { .foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; } }
@media (max-width: 520px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-about p { margin: 14px 0 0; color: #8FA5B7; font-size: 14.5px; max-width: 330px; }
.foot-col h4 {
  font-size: 12px; text-transform: uppercase; letter-spacing: .08em;
  color: #fff; margin: 0 0 14px; font-weight: 700;
}
.foot-col ul { list-style: none; margin: 0; padding: 0; }
.foot-col li { margin-bottom: 9px; }
.foot-col a { color: #A9BCCC; }
.foot-col a:hover { color: var(--yellow); text-decoration: none; }
.soon {
  display: inline-block; margin-left: 7px; padding: 1px 8px; border-radius: 20px;
  background: rgba(255,212,59,.16); color: var(--yellow);
  font-size: 11px; font-weight: 700; letter-spacing: .03em; text-transform: uppercase;
  vertical-align: middle;
}
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.10);
  padding: 20px 0 26px; font-size: 14px; color: #7E93A6;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
footer.site .brand { font-size: 18px; }