/* =========================================================
   Shugg — главная витрина
   Глубокий чёрный, мягкий фиолетовый свет, стекло без блеска.
   ========================================================= */

body.landing-dark {
  --bg: #07070b;
  --text: #f4f3fa;
  --text-2: rgba(234, 232, 247, 0.68);
  --text-3: rgba(234, 232, 247, 0.42);
  --hair: rgba(255, 255, 255, 0.075);
  --hair-2: rgba(255, 255, 255, 0.14);
  --violet: #7a6bf5;
  --violet-2: #aea4ff;
  --gold: #d6b074;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-xl: 28px;

  /* токены общих компонентов: шапка, подвал, блок кода */
  --paper: var(--bg);
  --paper-2: #0d0d13;
  --paper-3: #050508;
  --ink: var(--text);
  --ink-2: var(--text-2);
  --ink-3: var(--text-3);
  --line: var(--hair);
  --line-strong: var(--hair-2);
  --brand: var(--violet);
  --brand-hover: var(--violet-2);
  --brand-soft: rgba(122, 107, 245, 0.14);
  --brass: var(--gold);
  --font-ui: "Onest", "Manrope", -apple-system, "Segoe UI", sans-serif;
  --font-display: var(--font-ui);

  background: var(--bg);
  color: var(--text);
  color-scheme: dark;
  overflow-x: clip;
  text-rendering: optimizeLegibility;
}

/* Плёночное зерно: убирает полосы на тёмных градиентах */
body.landing-dark::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.6 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

body.landing-dark ::selection { background: rgba(122, 107, 245, 0.38); color: #fff; }

/* ---------- Шапка: прозрачная сверху, стекло при прокрутке ---------- */
body.landing-dark .site-header {
  background: transparent;
  border-bottom: 1px solid transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  transition: background-color 0.5s var(--ease), border-color 0.5s var(--ease), backdrop-filter 0.5s var(--ease);
}
body.landing-dark .site-header.is-scrolled {
  background: rgba(7, 7, 11, 0.64);
  border-bottom-color: var(--hair);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  backdrop-filter: blur(20px) saturate(150%);
}
body.landing-dark .brand__text { font-weight: 600; font-size: 1.36rem; letter-spacing: -0.035em; }

/* ---------- Стеклянный контур: тонкий свет по краю ---------- */
.rim { position: relative; }
.rim::before,
body.landing-dark .btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  padding: 1px;
  background: var(--rim, linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.03) 45%, rgba(255, 255, 255, 0.07)));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

/* ---------- Кнопки ---------- */
body.landing-dark .btn {
  position: relative;
  isolation: isolate;
  border: 1px solid transparent;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition:
    transform 0.55s var(--ease),
    box-shadow 0.55s var(--ease),
    filter 0.4s var(--ease),
    background-color 0.4s var(--ease),
    color 0.4s var(--ease);
}
body.landing-dark .btn::before { inset: -1px; }
body.landing-dark .btn:hover { transform: translateY(-2px); }
body.landing-dark .btn:active { transform: translateY(0); transition-duration: 0.15s; }
body.landing-dark .btn:focus-visible { outline: 2px solid var(--violet-2); outline-offset: 3px; }
body.landing-dark .btn .i-arrow { margin-right: -2px; transition: transform 0.55s var(--ease); }
body.landing-dark .btn:hover .i-arrow { transform: translateX(3px); }

body.landing-dark .btn--primary,
body.landing-dark .btn--primary:hover {
  color: #fff;
  border-color: transparent;
  background:
    radial-gradient(100% 130% at 50% 0%, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0) 58%),
    linear-gradient(180deg, #8576fb 0%, #5a49e2 100%);
}
body.landing-dark .btn--primary {
  --rim: linear-gradient(180deg, rgba(255, 255, 255, 0.48), rgba(255, 255, 255, 0.08) 48%, rgba(255, 255, 255, 0.18));
  box-shadow:
    inset 0 -1px 0 rgba(24, 12, 80, 0.35),
    0 1px 2px rgba(0, 0, 0, 0.45),
    0 10px 28px -12px rgba(110, 95, 245, 0.5);
}
body.landing-dark .btn--primary:hover {
  filter: brightness(1.08) saturate(1.05);
  box-shadow:
    inset 0 -1px 0 rgba(24, 12, 80, 0.35),
    0 2px 4px rgba(0, 0, 0, 0.35),
    0 18px 38px -14px rgba(122, 107, 245, 0.6);
}

body.landing-dark .btn--ghost,
body.landing-dark .btn--ghost:hover { border-color: transparent; color: var(--text); }
body.landing-dark .btn--ghost {
  --rim: linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.04) 50%, rgba(255, 255, 255, 0.1));
  background: rgba(255, 255, 255, 0.035);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
body.landing-dark .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 14px 30px -18px rgba(0, 0, 0, 0.9);
}
body.landing-dark .btn--lg { padding: 18px 30px 18px 36px; font-size: 1.08rem; gap: 12px; }

/* ---------- Первый экран ---------- */
.l-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  place-items: center;
  min-height: calc(100vh - 70px);
  min-height: calc(100svh - 70px);
  padding: clamp(40px, 6vw, 80px) 0 clamp(56px, 7vw, 96px);
  text-align: center;
}
.l-hero__glow {
  position: absolute;
  inset: -70px 0 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(40% 36% at 50% 44%, rgba(122, 107, 245, 0.2), transparent 72%),
    radial-gradient(70% 50% at 50% -8%, rgba(174, 164, 255, 0.14), transparent 70%),
    radial-gradient(28% 30% at 76% 26%, rgba(88, 68, 222, 0.12), transparent 72%);
}

.l-wordmark {
  margin: 0 0 clamp(6px, 1vw, 14px);
  padding: 0 0.06em 0.14em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(5.5rem, 17vw, 12.5rem);
  line-height: 1;
  letter-spacing: -0.055em;
  background: linear-gradient(180deg, #ffffff 28%, rgba(206, 199, 255, 0.72) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.l-audience {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: clamp(22px, 2.6vw, 32px);
}
.l-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px 10px 16px;
  border-radius: 999px;
  font-size: clamp(0.92rem, 1.1vw, 1.02rem);
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.03);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.l-chip svg { flex: none; color: var(--violet-2); }

.l-tagline {
  max-width: 44ch;
  margin: 0 auto clamp(30px, 3.4vw, 44px);
  font-size: clamp(1.1rem, 1.7vw, 1.4rem);
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--text-2);
  text-wrap: balance;
}

/* ---------- Секции ---------- */
.l-section {
  position: relative;
  isolation: isolate;
  padding: clamp(80px, 11vw, 150px) 0;
  scroll-margin-top: 70px;
}
.l-section + .l-section { padding-top: clamp(24px, 4vw, 56px); }
.l-hero + .l-section { padding-top: clamp(40px, 5vw, 72px); }

.l-head { max-width: 820px; margin-bottom: clamp(40px, 5vw, 60px); }
.l-head--center { margin-inline: auto; text-align: center; }
.l-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}
.l-eyebrow::before { content: ""; width: 22px; height: 1px; background: linear-gradient(90deg, transparent, currentColor); }
.l-title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
  text-wrap: balance;
}
.l-title span { color: rgba(234, 232, 247, 0.5); }
.l-lead {
  max-width: 56ch;
  margin: 20px 0 0;
  font-size: clamp(1.02rem, 1.25vw, 1.14rem);
  line-height: 1.65;
  color: var(--text-2);
}
.l-head--center .l-lead { margin-inline: auto; }

.l-glow { position: absolute; z-index: -1; pointer-events: none; }
.l-glow--right { top: -5%; right: -28%; width: 72vw; height: 90%; background: radial-gradient(closest-side, rgba(122, 107, 245, 0.11), transparent); }
.l-glow--left { top: 5%; left: -32%; width: 72vw; height: 95%; background: radial-gradient(closest-side, rgba(96, 78, 230, 0.1), transparent); }

/* ---------- Стеклянные карточки ---------- */
.l-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  backdrop-filter: blur(24px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 40px 80px -50px rgba(0, 0, 0, 0.9);
  overflow: hidden;
}

.l-spot { position: relative; }
.l-spot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(520px circle at var(--mx, 50%) var(--my, 0%), rgba(174, 164, 255, 0.09), transparent 42%);
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}
.l-spot:hover::after { opacity: 1; }

/* ---------- Два способа ---------- */
.l-ways { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.l-way { display: flex; flex-direction: column; padding: clamp(28px, 3.2vw, 44px); }
.l-way--dev {
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(122, 107, 245, 0.16), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
}
.l-kicker { font-size: 0.74rem; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-3); }
.l-way__title {
  margin: 14px 0 12px;
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text);
}
.l-way__text { max-width: 44ch; margin: 0; color: var(--text-2); line-height: 1.6; }

.l-screen {
  display: grid;
  flex: 1;
  align-content: start;
  gap: 12px;
  margin-top: 32px;
  padding: 20px;
  border-radius: 18px;
  background: rgba(3, 3, 6, 0.55);
}
.l-msg {
  max-width: 88%;
  padding: 12px 16px;
  border-radius: 16px 16px 16px 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-2);
  font-size: 0.94rem;
  line-height: 1.55;
}
.l-msg--me {
  justify-self: end;
  border-radius: 16px 16px 6px 16px;
  background: linear-gradient(180deg, rgba(122, 107, 245, 0.34), rgba(122, 107, 245, 0.2));
  color: var(--text);
}
.l-screen__foot { display: flex; align-items: center; gap: 8px; margin-top: 4px; font-size: 0.8rem; color: var(--text-3); }
.l-dot { width: 6px; height: 6px; border-radius: 50%; background: #74d6a6; box-shadow: 0 0 0 3px rgba(116, 214, 166, 0.14); }

.l-screen--code { gap: 10px; font-family: var(--font-mono); font-size: 0.88rem; }
.l-code { color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.t-m { color: #7fd6ac; font-weight: 500; }
.t-k { color: var(--violet-2); }
.t-s { color: #e8c996; }

.l-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  margin-top: 28px;
  font-weight: 500;
  color: var(--text);
}
.l-link .i-arrow { color: var(--violet-2); transition: transform 0.55s var(--ease); }
.l-link:hover .i-arrow { transform: translateX(4px); }

/* ---------- Модели: сетка с тонкими линиями ---------- */
.l-models {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border-radius: var(--radius-xl);
  background: var(--hair);
  box-shadow: 0 0 0 1px var(--hair);
  overflow: hidden;
}
.l-model {
  display: flex;
  flex-direction: column;
  min-height: 200px;
  padding: clamp(24px, 2.6vw, 34px);
  background: #09090e;
  transition: background-color 0.5s var(--ease);
}
.l-model:hover { background: #0d0d14; }
.l-model__vendor { font-size: 0.72rem; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-3); }
.l-model__name { margin: 14px 0 0; font-size: clamp(1.6rem, 2.2vw, 2.05rem); font-weight: 600; letter-spacing: -0.035em; line-height: 1.1; color: var(--text); }
.l-model__variants { margin: 10px 0 12px; font-size: 0.82rem; color: var(--violet-2); }
.l-model p { margin: 0; font-size: 0.92rem; line-height: 1.55; color: var(--text-2); }

/* ---------- Как это устроено: три шага ---------- */
.l-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border-radius: var(--radius-xl);
  background: var(--hair);
  box-shadow: 0 0 0 1px var(--hair);
  overflow: hidden;
}
.l-step { padding: clamp(24px, 2.6vw, 34px); background: #09090e; }
.l-step__num { font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.08em; color: var(--gold); }
.l-step__title { margin: 14px 0 10px; font-size: 1.2rem; font-weight: 600; letter-spacing: -0.02em; color: var(--text); }
.l-step p { margin: 0; font-size: 0.92rem; line-height: 1.55; color: var(--text-2); }

/* ---------- Возможности: бенто ---------- */
.l-bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.l-feat {
  display: flex;
  flex-direction: column;
  grid-column: span 2;
  min-height: 210px;
  padding: clamp(26px, 2.8vw, 34px);
}
.l-feat--wide { grid-column: span 3; min-height: 230px; }
.l-feat__icon {
  flex: none;
  box-sizing: border-box;
  width: 46px;
  height: 46px;
  margin-bottom: auto;
  padding: 11px;
  border-radius: 14px;
  color: var(--violet-2);
  background: linear-gradient(180deg, rgba(122, 107, 245, 0.16), rgba(122, 107, 245, 0.06));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.07), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.l-feat h3 {
  margin: 28px 0 10px;
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text);
}
.l-feat p { max-width: 46ch; margin: 0; font-size: 0.96rem; line-height: 1.6; color: var(--text-2); }
.l-feat--support {
  grid-column: span 6;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: auto;
}
.l-feat__row { display: flex; align-items: center; gap: 22px; }
.l-feat--support .l-feat__icon { margin: 0; }
.l-feat--support h3 { margin: 0 0 6px; }

.l-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.l-actions--center { justify-content: center; }

/* ---------- Вопросы ---------- */
.l-faq { padding: 6px clamp(20px, 3vw, 34px); }
.l-faq details { border-bottom: 1px solid var(--hair); }
.l-faq details:last-child { border-bottom: 0; }
.l-faq summary {
  position: relative;
  padding: 22px 38px 22px 0;
  font-weight: 500;
  font-size: 1.02rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}
.l-faq summary::-webkit-details-marker { display: none; }
.l-faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--violet-2);
  font-size: 1.4rem;
  font-weight: 300;
}
.l-faq details[open] summary::after { content: "\2212"; }
.l-faq p { margin: 0; padding: 0 38px 22px 0; max-width: 68ch; color: var(--text-2); line-height: 1.6; }
.l-faq__more { margin: 18px 0 0; font-size: 0.9rem; color: var(--text-3); }
.l-faq__more a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Финал ---------- */
.l-final { padding-bottom: clamp(90px, 10vw, 130px); }
.l-final__glow {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(44% 56% at 50% 52%, rgba(122, 107, 245, 0.16), transparent 72%);
}

body.landing-dark .site-footer { background: transparent; border-top-color: var(--hair); }
body.landing-dark .footer-grid a:hover,
body.landing-dark .footer-legal a:hover { color: var(--text); }

/* ---------- Движение ---------- */
@media (prefers-reduced-motion: no-preference) {
  .l-in { animation: l-rise 1.2s var(--ease) both; animation-delay: calc(var(--d, 0) * 1ms); }
  .js .l-reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 1.1s var(--ease), transform 1.1s var(--ease);
    transition-delay: calc(var(--d, 0) * 1ms);
  }
  .js .l-reveal.is-in { opacity: 1; transform: none; }
  .l-hero__glow { animation: l-breathe 14s cubic-bezier(0.45, 0, 0.55, 1) infinite alternate; }
  .l-cycle { animation: l-cycle 7.2s ease-in-out infinite both; animation-delay: calc(var(--c, 0) * 2.4s); }
}
@keyframes l-rise {
  from { opacity: 0; transform: translateY(18px); filter: blur(10px); }
  to { opacity: 1; transform: none; filter: none; }
}
@keyframes l-breathe {
  from { opacity: 0.8; transform: scale(1); }
  to { opacity: 1; transform: scale(1.05); }
}
@keyframes l-cycle {
  0%, 100% { opacity: 0.35; }
  8%, 30% { opacity: 1; }
  38% { opacity: 0.35; }
}

/* ---------- Адаптив ---------- */
@media (max-width: 720px) {
  .l-models, .l-steps { grid-template-columns: 1fr; }
  .l-model { min-height: auto; }
}
@media (max-width: 860px) {
  .l-ways, .l-bento { grid-template-columns: 1fr; }
  .l-feat, .l-feat--wide, .l-feat--support { grid-column: auto; min-height: auto; }
  .l-feat h3 { margin-top: 24px; }
  .l-feat--support { flex-direction: column; align-items: flex-start; }
  .l-feat--support h3 { margin-top: 0; }
}
@media (max-width: 560px) {
  .l-feat__row { align-items: flex-start; }
}