/* =========================================================
   «Минимальная настройка UFW на VPS» — дизайн-система
   Все классы с префиксом uf-, чтобы не конфликтовать со стилями Тильды.
   ========================================================= */

.uf {
  --uf-bg: #F7F8FC;
  --uf-surface: #FFFFFF;
  --uf-text: #0F172A;
  --uf-muted: #5B6478;
  --uf-line: #E6E9F2;
  --uf-primary: #4F46E5;
  --uf-primary-dark: #4338CA;
  --uf-accent: #06B6D4;
  --uf-ok: #10B981;
  --uf-warn: #F59E0B;
  --uf-danger: #EF4444;
  --uf-code-bg: #0B1220;
  --uf-code-text: #E2E8F0;
  --uf-grad: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
  --uf-radius: 20px;
  --uf-shadow: 0 10px 30px -12px rgba(15, 23, 42, .18);
  --uf-font: 'Manrope', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --uf-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  font-family: var(--uf-font);
  color: var(--uf-text);
  background: var(--uf-bg);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.uf *, .uf *::before, .uf *::after { box-sizing: border-box; }
.uf h1, .uf h2, .uf h3, .uf h4 { font-family: var(--uf-font); line-height: 1.2; margin: 0 0 .5em; font-weight: 800; letter-spacing: -.02em; }
.uf h1 { font-size: clamp(34px, 5vw, 58px); }
.uf h2 { font-size: clamp(28px, 3.4vw, 40px); }
.uf h3 { font-size: 21px; font-weight: 700; }
.uf p { margin: 0 0 1em; }
.uf a { color: var(--uf-primary); text-decoration: none; }
.uf a:hover { color: var(--uf-primary-dark); }
.uf ul, .uf ol { margin: 0 0 1em; padding-left: 1.3em; }
.uf code { font-family: var(--uf-mono); font-size: .88em; background: #EEF0FA; color: #3730A3; padding: .1em .4em; border-radius: 6px; }

.uf-container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.uf-section { padding: 88px 0; position: relative; overflow: hidden; }
.uf-section--white { background: var(--uf-surface); }
.uf-section--tight { padding: 56px 0; }
.uf-eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--uf-primary); background: #EEF0FF; padding: 6px 12px; border-radius: 999px; margin-bottom: 16px; }
.uf-lead { font-size: 19px; color: var(--uf-muted); max-width: 720px; }
.uf-center { text-align: center; }
.uf-center .uf-lead { margin-left: auto; margin-right: auto; }
.uf-grad-text { background: var(--uf-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Кнопки ---------- */
.uf-btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; padding: 14px 26px; border-radius: 14px; border: 2px solid transparent; transition: transform .15s, box-shadow .15s, background .15s; cursor: pointer; }
.uf-btn:hover { transform: translateY(-2px); }
.uf .uf-btn--primary { background: var(--uf-grad); color: #fff; box-shadow: 0 10px 24px -8px rgba(79, 70, 229, .55); }
.uf .uf-btn--primary:hover { color: #fff; }
.uf .uf-btn--ghost { background: #fff; color: var(--uf-text); border-color: var(--uf-line); }
.uf .uf-btn--ghost:hover { border-color: var(--uf-primary); color: var(--uf-primary); }
.uf-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* ---------- Шапка ---------- */
.uf-header { background: rgba(255, 255, 255, .92); border-bottom: 1px solid var(--uf-line); }
.uf-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.uf-logo { display: inline-flex; align-items: center; gap: 10px; color: var(--uf-text) !important; }
.uf-logo__mark { width: 40px; height: 40px; flex: none; }
.uf-logo__text { display: flex; flex-direction: column; line-height: 1.05; }
.uf-logo__text b { font-size: 20px; font-weight: 800; letter-spacing: .02em; }
.uf-logo__text small { font-size: 12px; color: var(--uf-muted); font-weight: 600; }
.uf-nav { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.uf-nav::-webkit-scrollbar { display: none; }
.uf-nav a { white-space: nowrap; color: var(--uf-text); font-weight: 600; font-size: 15px; padding: 8px 14px; border-radius: 10px; }
.uf-nav a:hover { background: #EEF0FF; color: var(--uf-primary); }
.uf-nav a[aria-current="page"] { background: #EEF0FF; color: var(--uf-primary); }

/* ---------- Декоративные пятна ---------- */
.uf-blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .45; pointer-events: none; z-index: 0; }
.uf-blob--1 { width: 460px; height: 460px; background: #A5B4FC; top: -140px; right: -120px; }
.uf-blob--2 { width: 380px; height: 380px; background: #67E8F9; bottom: -160px; left: -120px; }
.uf-section > .uf-container { position: relative; z-index: 1; }

/* ---------- Hero ---------- */
.uf-hero { padding: 96px 0 72px; }
.uf-hero__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.uf-hero__grid > * { min-width: 0; }
.uf-hero h1 { margin-bottom: 20px; }
.uf-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 64px; }
.uf-stat { background: var(--uf-surface); border: 1px solid var(--uf-line); border-radius: var(--uf-radius); padding: 22px; box-shadow: var(--uf-shadow); }
.uf-stat b { display: block; font-size: 30px; font-weight: 800; }
.uf-stat span { color: var(--uf-muted); font-size: 15px; }

/* ---------- Терминал (декоративный, без копирования) ---------- */
.uf-term { background: var(--uf-code-bg); border-radius: var(--uf-radius); box-shadow: 0 30px 60px -20px rgba(15, 23, 42, .45); overflow: hidden; }
.uf-term__bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: #111A2E; }
.uf-term__bar i { width: 12px; height: 12px; border-radius: 50%; background: #FF5F57; }
.uf-term__bar i:nth-child(2) { background: #FEBC2E; }
.uf-term__bar i:nth-child(3) { background: #28C840; }
.uf-term__bar span { margin-left: 8px; color: #8A94AB; font-family: var(--uf-mono); font-size: 13px; }
.uf-term pre { margin: 0; padding: 20px; color: var(--uf-code-text); font-family: var(--uf-mono); font-size: 13px; line-height: 1.65; overflow-x: auto; }
.uf-term .t-ok { color: #34D399; }
.uf-term .t-dim { color: #64748B; }
.uf-term .t-cmd { color: #A5B4FC; }

/* ---------- Блок кода с кнопкой «Копировать» ---------- */
.uf-code { position: relative; background: var(--uf-code-bg); border-radius: 14px; margin: 14px 0 20px; overflow: hidden; }
.uf-code__label { display: block; padding: 10px 120px 10px 16px; font-family: var(--uf-mono); font-size: 12px; color: #8A94AB; background: #111A2E; }
.uf-code pre { margin: 0; padding: 18px 20px; overflow-x: auto; }
.uf-code:not(:has(.uf-code__label)) pre { padding-top: 44px; }
.uf-code pre code { background: none; color: var(--uf-code-text); padding: 0; font-size: 14px; line-height: 1.7; white-space: pre; }
.uf-code .hl-c { color: #64748B; font-style: italic; }
.uf-code .hl-k { color: #A5B4FC; font-weight: 600; }
.uf-copy { position: absolute; top: 6px; right: 8px; font-family: var(--uf-font); font-size: 13px; font-weight: 700; color: #CBD5E1; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14); border-radius: 8px; padding: 5px 12px; cursor: pointer; transition: background .15s; }
.uf-copy:hover { background: rgba(255, 255, 255, .16); color: #fff; }
.uf-copy.is-done { background: var(--uf-ok); border-color: var(--uf-ok); color: #fff; }

/* ---------- Карточки ---------- */
.uf-grid { display: grid; gap: 20px; }
.uf-grid--2 { grid-template-columns: repeat(2, 1fr); }
.uf-grid--3 { grid-template-columns: repeat(3, 1fr); }
.uf-grid--4 { grid-template-columns: repeat(4, 1fr); }
.uf-card { background: var(--uf-surface); border: 1px solid var(--uf-line); border-radius: var(--uf-radius); padding: 28px; box-shadow: var(--uf-shadow); }
.uf-card p:last-child { margin-bottom: 0; }
.uf-card p { color: var(--uf-muted); }
.uf-icon { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: #EEF0FF; color: var(--uf-primary); margin-bottom: 18px; }
.uf-icon svg { width: 26px; height: 26px; }
.uf-card--link { display: block; color: inherit !important; transition: transform .15s, border-color .15s; }
.uf-card--link:hover { transform: translateY(-4px); border-color: var(--uf-primary); }
.uf-card__more { display: inline-block; margin-top: 12px; font-weight: 700; color: var(--uf-primary); }

/* ---------- Шаги ---------- */
.uf-steps { display: grid; gap: 20px; margin-top: 40px; }
.uf-step { display: grid; grid-template-columns: 64px 1fr; gap: 24px; background: var(--uf-surface); border: 1px solid var(--uf-line); border-radius: var(--uf-radius); padding: 28px; box-shadow: var(--uf-shadow); }
.uf-step__body { min-width: 0; }
.uf-step__num { width: 64px; height: 64px; border-radius: 18px; background: var(--uf-grad); color: #fff; font-size: 28px; font-weight: 800; display: grid; place-items: center; }
.uf-step__body > p { color: var(--uf-muted); }
.uf-step .uf-code { margin-bottom: 0; }

/* ---------- Плашки-предупреждения ---------- */
.uf-note { border-radius: 16px; padding: 20px 24px 20px 60px; position: relative; margin: 20px 0; border: 1px solid; }
.uf-note::before { position: absolute; left: 20px; top: 18px; font-size: 22px; line-height: 1; }
.uf-note p:last-child { margin-bottom: 0; }
.uf-note--warn { background: #FFFBEB; border-color: #FDE68A; }
.uf-note--warn::before { content: '⚠️'; }
.uf-note--danger { background: #FEF2F2; border-color: #FECACA; }
.uf-note--danger::before { content: '⛔'; }
.uf-note--tip { background: #ECFEFF; border-color: #A5F3FC; }
.uf-note--tip::before { content: '💡'; }

/* ---------- FAQ ---------- */
.uf-faq { max-width: 860px; margin: 40px auto 0; display: grid; gap: 12px; }
.uf-faq details { background: var(--uf-surface); border: 1px solid var(--uf-line); border-radius: 16px; padding: 0 24px; }
.uf-faq summary { cursor: pointer; list-style: none; font-weight: 700; font-size: 18px; padding: 20px 32px 20px 0; position: relative; }
.uf-faq summary::-webkit-details-marker { display: none; }
.uf-faq summary::after { content: '+'; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 26px; font-weight: 400; color: var(--uf-primary); }
.uf-faq details[open] summary::after { content: '−'; }
.uf-faq details > div { padding: 0 0 20px; color: var(--uf-muted); }

/* ---------- Страницы с подробностями ---------- */
.uf-page-hero { padding: 72px 0 48px; }
.uf-crumbs { font-size: 14px; color: var(--uf-muted); margin-bottom: 16px; }
.uf-layout { display: grid; grid-template-columns: 260px 1fr; gap: 48px; align-items: start; }
.uf-layout > * { min-width: 0; }
.uf-toc { position: sticky; top: 24px; background: var(--uf-surface); border: 1px solid var(--uf-line); border-radius: var(--uf-radius); padding: 20px; font-size: 15px; }
.uf-toc b { display: block; margin-bottom: 10px; }
.uf-toc ol { margin: 0; padding-left: 1.2em; }
.uf-toc li { margin: 6px 0; }
.uf-article { max-width: 780px; }
.uf-article h2 { margin-top: 56px; font-size: 30px; scroll-margin-top: 24px; }
.uf-article h2:first-child { margin-top: 0; }
.uf-article h3 { margin-top: 28px; }

/* ---------- Таблица шпаргалки ---------- */
.uf-table-wrap { overflow-x: auto; margin: 16px 0 24px; }
.uf-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--uf-surface); border: 1px solid var(--uf-line); border-radius: 16px; overflow: hidden; font-size: 15px; }
.uf-table th, .uf-table td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--uf-line); vertical-align: top; }
.uf-table tr:last-child td { border-bottom: 0; }
.uf-table th { background: #F1F3FA; font-weight: 700; }
.uf-table td:first-child { width: 52%; }
.uf-table code { white-space: nowrap; }

/* ---------- CTA и подвал ---------- */
.uf-cta { background: var(--uf-grad); color: #fff; border-radius: 28px; padding: 56px; text-align: center; }
.uf-cta h2 { color: #fff; }
.uf-cta p { color: rgba(255, 255, 255, .85); max-width: 640px; margin: 0 auto; }
.uf-cta .uf-actions { justify-content: center; }
.uf .uf-cta .uf-btn--ghost { background: #fff; border-color: #fff; }
.uf-footer { background: #0B1220; color: #94A3B8; padding: 48px 0; font-size: 15px; }
.uf-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: center; }
.uf-footer a { color: #CBD5E1; }
.uf-footer a:hover { color: #fff; }
.uf-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.uf-footer .uf-logo { color: #fff !important; }
.uf-footer .uf-logo__text small { color: #94A3B8; }

/* ---------- Адаптив ---------- */
@media (max-width: 960px) {
  .uf-hero__grid, .uf-layout { grid-template-columns: 1fr; }
  .uf-grid--3, .uf-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .uf-stats { grid-template-columns: repeat(2, 1fr); }
  .uf-toc { position: static; }
}
@media (max-width: 640px) {
  .uf { font-size: 16px; }
  .uf-section { padding: 64px 0; }
  .uf-hero { padding: 56px 0 48px; }
  .uf-container { padding: 0 16px; }
  .uf-grid--2, .uf-grid--3, .uf-grid--4 { grid-template-columns: 1fr; }
  .uf-step { grid-template-columns: 1fr; gap: 16px; padding: 22px; }
  .uf-step__num { width: 48px; height: 48px; font-size: 22px; border-radius: 14px; }
  .uf-header__inner { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 0; }
  .uf-nav { width: 100%; }
  .uf-cta { padding: 36px 22px; }
  .uf-table td:first-child { width: auto; }
}