/* =========================================================================
   99 Nights Scripts — main.css
   Переменные, типографика, раскладка, шапка, подвал, hero, кнопки.
   Атмосфера: ночной лес, лунный циан сквозь туман.
   ========================================================================= */

/* --- Шрифты (самохостинг, субсеты cyrillic + latin) --------------------- */

@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/montserrat-700-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/montserrat-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/montserrat-800-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/montserrat-800-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/inter-400-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/inter-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/inter-600-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/inter-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/inter-700-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/inter-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Source Code Pro';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/scp-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* --- Переменные -------------------------------------------------------- */

:root {
  /* Палитра ночного леса */
  --bg-base:      #080C10;
  --bg-card:      #0E1520;
  --bg-elev:      #121C2A;  /* чуть светлее карточки — для вложенных блоков */
  --bg-code:      #060A0E;
  --accent:       #22D3EE;
  --accent-dim:   #164E63;
  --accent-soft:  rgba(34, 211, 238, 0.10);
  --text-primary: #F0F9FF;
  --text-muted:   #7C8AA0;  /* поднят с #64748B до WCAG AA (контраст >=4.9:1 на тёмном фоне) */
  --text-soft:    #94A3B8;  /* чуть ярче muted — для основного текста абзацев */
  --border:       #1E293B;
  --border-soft:  #16202E;
  --ok:           #4ADE80;  /* фосфорный зелёный — статус «работает» */
  --warn:         #FBBF24;

  /* Типографика */
  --font-display: 'Montserrat', 'Segoe UI', system-ui, -apple-system, Arial, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-code:    'Source Code Pro', ui-monospace, 'Cascadia Code', 'SFMono-Regular', Consolas, monospace;

  /* Геометрия */
  --radius:    8px;
  --radius-sm: 3px;
  --radius-pill: 999px;
  --maxw: 1080px;
  --maxw-narrow: 760px;

  /* Отступы */
  --gap: 16px;
  --section-y: 72px;
}

/* --- Сброс ------------------------------------------------------------- */

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

* {
  margin: 0;
}

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  min-height: 100vh;
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Атмосфера: лунный свет сверху + сгущающаяся к низу темнота. Чистый CSS. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(1100px 600px at 50% -8%, rgba(34, 211, 238, 0.10), transparent 60%),
    radial-gradient(800px 500px at 85% 4%, rgba(34, 211, 238, 0.045), transparent 55%),
    linear-gradient(180deg, #0A1018 0%, var(--bg-base) 45%, #05080B 100%);
}

/* Тонкая «дымка» — почти невидимая, придаёт глубину. */
body::after {
  content: "";
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 38vh;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(6, 10, 14, 0.85));
}

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

/* --- Типографика ------------------------------------------------------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.1rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.4rem); }
h4 { font-size: 1.1rem; }

p { line-height: 1.75; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}
a:hover { color: #67E8F9; }

strong, b { font-weight: 700; color: var(--text-primary); }

code, kbd, samp {
  font-family: var(--font-code);
  font-size: 0.92em;
}

ul, ol { padding-left: 1.25rem; }

::selection {
  background: var(--accent);
  color: #000;
}

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

/* --- Служебное --------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--accent);
  color: #000;
  padding: 10px 16px;
  font-weight: 700;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
  left: 0;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
}

.container--narrow {
  max-width: var(--maxw-narrow);
}

.site-main {
  display: block;
  padding-bottom: var(--section-y);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --- Шапка / навигация ------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 12, 16, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.nav-logo:hover { color: var(--text-primary); }
.nav-logo__mark { font-size: 1.05em; }
.nav-logo__accent { color: var(--accent); }

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  color: var(--text-soft);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}
.nav-links a:hover {
  color: var(--text-primary);
  border-color: var(--border);
}

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 38px;
  padding: 0 9px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-burger__bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-burger[aria-expanded="true"] .nav-burger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-burger[aria-expanded="true"] .nav-burger__bar:nth-child(2) {
  opacity: 0;
}
.nav-burger[aria-expanded="true"] .nav-burger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

.hero {
  position: relative;
  text-align: center;
  padding: clamp(56px, 9vw, 104px) 20px clamp(40px, 6vw, 64px);
  border-bottom: 1px solid var(--border-soft);
}

.hero__inner {
  max-width: 820px;
  margin-inline: auto;
}

.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  padding: 4px 12px;
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
}

.hero h1 {
  font-size: clamp(2.1rem, 5.4vw, 3.4rem);
  margin-bottom: 18px;
}
.hero h1 .hl { color: var(--accent); }

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--text-soft);
  max-width: 620px;
  margin: 0 auto 28px;
}

.facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
  margin-top: 4px;
}
.fact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}
.fact__icon {
  color: var(--ok);
  font-weight: 700;
}
.hero__meta {
  margin-top: 22px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}
.hero__meta b { color: var(--text-soft); font-weight: 600; }

/* --- Баннер после hero ------------------------------------------------- */

.hero-banner {
  margin-top: 28px;
}
.hero-banner img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* --- Секции ------------------------------------------------------------ */

.section {
  padding-top: var(--section-y);
}
.section__head {
  margin-bottom: 28px;
}
.section__head--center {
  text-align: center;
}
.section-title {
  margin-bottom: 10px;
}
.section-lead {
  color: var(--text-soft);
  max-width: 640px;
  font-size: 1.02rem;
}
.section__head--center .section-lead {
  margin-inline: auto;
}

/* --- Хлебные крошки ---------------------------------------------------- */

.breadcrumb {
  padding: 16px 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .breadcrumb_last { color: var(--text-muted); }

/* --- Заголовок страницы ------------------------------------------------ */

.page-head {
  padding: 28px 0 8px;
}
.page-title {
  margin-bottom: 14px;
}
.page-intro {
  color: var(--text-soft);
  font-size: 1.08rem;
  max-width: 680px;
}
.page-updated {
  margin-top: 12px;
  font-family: var(--font-code);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* --- Текстовый контент (.prose) --------------------------------------- */

.prose { color: var(--text-soft); }
.prose > * + * { margin-top: 1rem; }
/* Читабельная ширина для SEO-лонгрида */
.longread { max-width: 768px; }
.longread h2:first-child { margin-top: 0; }
.prose h2 {
  color: var(--text-primary);
  margin-top: 2.2rem;
  margin-bottom: 0.6rem;
}
.prose h3 {
  color: var(--text-primary);
  margin-top: 1.6rem;
  margin-bottom: 0.4rem;
}
.prose p { color: var(--text-soft); }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { color: var(--text-soft); }
.prose li + li { margin-top: 0.35rem; }
.prose strong { color: var(--text-primary); }
.prose code {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  color: var(--accent);
}

.content-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 24px;
}
.content-block__title { margin-bottom: 14px; }

/* --- Кнопки ------------------------------------------------------------ */

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  padding: 12px 22px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
  text-align: center;
}

/* Главный CTA: приглушённый циан (яркий циан зарезервирован за кнопкой «Скопировать»). */
.btn-primary {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-dim);
}
.btn-primary:hover {
  color: #000;
  background: var(--accent);
  border-color: var(--accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* --- Подвал ------------------------------------------------------------ */

.site-footer {
  border-top: 1px solid var(--border);
  background: #060A0E;
  margin-top: var(--section-y);
}
.footer-inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 48px 20px 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 32px;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.footer-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 320px;
}
.footer-heading {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 700;
}
.footer-col a {
  display: block;
  color: var(--text-soft);
  font-size: 0.94rem;
  padding: 4px 0;
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
.footer-disclaimer {
  color: var(--text-muted);
  font-size: 0.82rem;
  max-width: 640px;
  line-height: 1.6;
}
.footer-copy {
  color: var(--text-muted);
  font-size: 0.82rem;
  white-space: nowrap;
}

/* --- 404 --------------------------------------------------------------- */

.error-404 {
  text-align: center;
  padding: clamp(60px, 12vw, 140px) 0;
}
.error-404__code {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(5rem, 18vw, 11rem);
  line-height: 1;
  color: var(--accent-dim);
  letter-spacing: 0.04em;
}
.error-404__title { margin: 8px 0 14px; }
.error-404__text {
  color: var(--text-soft);
  max-width: 460px;
  margin: 0 auto 28px;
}
.error-404__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* --- Адаптив ----------------------------------------------------------- */

@media (max-width: 860px) {
  :root { --section-y: 52px; }

  .nav-burger { display: flex; }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 16px;
    background: rgba(8, 12, 16, 0.98);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden; /* убирает ссылки из tab-порядка, пока меню закрыто */
    pointer-events: none;
    transition: max-height 0.28s ease, opacity 0.2s ease, visibility 0s linear 0.28s;
  }
  .nav-links.is-open {
    max-height: 320px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: max-height 0.28s ease, opacity 0.2s ease, visibility 0s linear 0s;
  }
  .nav-links a {
    padding: 12px 10px;
    border: none;
    border-bottom: 1px solid var(--border-soft);
  }
  .nav-links li:last-child a { border-bottom: none; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px 20px;
  }
  .footer-brand { grid-column: 1 / -1; }

  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 440px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* --- Уважение к настройкам пользователя -------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}