:root {
  --bg: #000000;
  --bg-elev: #0c0a12;
  --fg: #e7e3f7;
  --muted: #c9c5d8;
  --accent: #a78bfa; /* основной фиолетовый */
  --accent-2: #7c3aed; /* глубокий фиолетовый */
  --purple: #a78bfa;
  --purple-glow: rgba(167, 139, 250, 0.16);
  --shadow: rgba(0, 0, 0, 0.6);
  --glow: rgba(167, 139, 250, 0.14);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--fg);
  background: radial-gradient(1200px 800px at 70% 10%, #0b0714 0%, var(--bg) 60%) fixed;
  background-color: var(--bg);
  overflow-x: hidden;
}

.noise-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 100 100"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.035"/></svg>');
  mix-blend-mode: soft-light;
  z-index: 0;
}

.skip-link {
  position: absolute; left: -9999px; top: auto;
}
.skip-link:focus {
  left: 1rem; top: 1rem; background: #000; color: #fff; padding: .5rem .75rem; z-index: 10;
}

.site-header {
  position: sticky; top: 0; z-index: 5;
  background: linear-gradient(to bottom, rgba(0,0,0,.65), rgba(0,0,0,0));
  backdrop-filter: blur(6px);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1100px; margin: 0 auto; padding: 1rem 1.25rem;
}
.nav__brand {
  color: var(--fg); text-decoration: none; letter-spacing: .08em; text-transform: uppercase;
}
.nav__toggle {
  display: none; width: 40px; height: 40px; border: 1px solid #222; background: var(--bg-elev); border-radius: 8px; position: relative;
}
.nav__toggle::before, .nav__toggle::after {
  content: ""; position: absolute; left: 8px; right: 8px; height: 2px; background: var(--fg); transition: transform .3s ease, top .3s ease, bottom .3s ease;
}
.nav__toggle::before { top: 12px; }
.nav__toggle::after { bottom: 12px; }
.nav__toggle[aria-expanded="true"]::before { top: 19px; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"]::after { bottom: 19px; transform: rotate(-45deg); }

.nav__list { list-style: none; display: flex; gap: 1rem; margin: 0; padding: 0; }
.nav__list a { color: var(--muted); text-decoration: none; padding: .5rem .75rem; border-radius: 8px; transition: color .2s ease, background-color .2s ease, box-shadow .2s ease; }
.nav__list a:hover { color: var(--fg); background: rgba(167,139,250,0.06); box-shadow: 0 0 0 1px rgba(167,139,250,0.15) inset; }

@media (max-width: 800px) {
  .nav__toggle { display: inline-block; }
  .nav__list { position: absolute; right: 1rem; top: 64px; flex-direction: column; background: rgba(10,11,14,.95); border: 1px solid #1a1c24; border-radius: 12px; padding: .5rem; display: none; min-width: 220px; }
  .nav__list.is-open { display: flex; }
}

.content { max-width: 1100px; margin: 0 auto; padding: 2rem 1.25rem 4rem; position: relative; z-index: 1; }

.hero {
  display: grid; gap: 1rem; place-items: start;
  padding: 8vh 0 2rem;
}
.hero__title { font-size: clamp(2.5rem, 7vw, 5rem); margin: 0; letter-spacing: .02em; }
.hero__subtitle { margin: .25rem 0 0; color: var(--muted); max-width: 42ch; }
.hero__cta { margin-top: 1rem; }

.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .8rem 1.1rem; border-radius: 12px; border: 1px solid rgba(167,139,250,.25); text-decoration: none; color: var(--fg); background: #0b0a10; transition: background-color .2s ease, border-color .2s ease, filter .2s ease; position: relative; overflow: hidden; }
.btn:hover { background: #100e18; border-color: rgba(167,139,250,.45); filter: none; }
.btn--primary { background: linear-gradient(180deg, rgba(167,139,250,.10), rgba(167,139,250,.03)); }
.btn--accent { background: linear-gradient(180deg, rgba(124,58,237,.12), rgba(124,58,237,.04)); }

/* Глитч-ховер на кнопках */
.btn::before, .btn::after { content: ""; }

/* Слои-слайсы и яркая подсветка */
.btn .btn__label { position: relative; z-index: 2; }
.btn .btn__slice { position: absolute; left: 0; right: 0; height: 33%; background: linear-gradient(90deg, transparent, rgba(167,139,250,.25), transparent); transform: translateX(0); opacity: 0; filter: blur(.2px); }
.btn .btn__slice--1 { top: 0; }
.btn .btn__slice--2 { top: 33%; }
.btn .btn__slice--3 { top: 66%; }
.btn:hover .btn__slice--1 { animation: sliceMove .5s steps(20) 1; }
.btn:hover .btn__slice--2 { animation: sliceMove .5s steps(22) .05s 1 reverse; }
.btn:hover .btn__slice--3 { animation: sliceMove .5s steps(18) .1s 1; }
@keyframes sliceMove {
  0% { opacity: .9; transform: translateX(-2px); }
  25% { transform: translateX(2px); }
  50% { opacity: .5; transform: translateX(-1px); }
  75% { transform: translateX(1px); }
  100% { opacity: 0; transform: translateX(0); }
}

/* Свет по курсору */
.btn::after { content: ""; position: absolute; inset: 0; background: radial-gradient(220px 120px at var(--mx, 50%) var(--my, 50%), rgba(167,139,250,.18), transparent 60%); z-index: 1; pointer-events: none; transition: opacity .2s ease; opacity: 0; }
.btn:hover::after { opacity: 1; }

/* Бордер-скан и клик-пульс */
.btn::before { content: ""; position: absolute; inset: 0; border-radius: 12px; background: conic-gradient(from 0deg, rgba(167,139,250,.0), rgba(167,139,250,.5), rgba(124,58,237,.0)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; padding: 1px; opacity: 0; }
.btn:hover::before { animation: borderSweep 1.2s linear infinite; opacity: .8; }
@keyframes borderSweep { to { transform: rotate(1turn); } }
.btn.is-pressing { filter: brightness(1.05); }

/* Фокус для доступности */
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(124,58,237,.6), 0 0 0 6px rgba(124,58,237,.25); }

.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 2rem; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }

.card { background: linear-gradient(180deg, rgba(124,58,237,.05), rgba(255,255,255,.01)); border: 1px solid #191427; border-radius: 14px; padding: 1rem; box-shadow: 0 8px 24px -18px var(--shadow), inset 0 1px 0 rgba(255,255,255,.02); transition: transform .25s ease, border-color .25s ease, background-color .25s ease; }
.card h2 { margin: 0 0 .25rem; font-size: 1.1rem; letter-spacing: .02em; }
.card p { margin: 0; color: var(--muted); }

/* Минималистичный hover без наклонов */
.card:hover { transform: translateY(-2px); border-color: rgba(167,139,250,.25); background: linear-gradient(180deg, rgba(124,58,237,.08), rgba(255,255,255,.015)); }

/* Визуальная подсказка пасхалки */
[data-easter="free"].easter-flash { box-shadow: 0 0 0 3px rgba(167,139,250,.8), 0 0 40px rgba(167,139,250,.35); }

.cta-wide { margin-top: 3rem; text-align: center; padding: 2rem; background: radial-gradient(600px 200px at 50% 0%, rgba(124,58,237,.16), transparent); border: 1px solid rgba(124,58,237,.25); border-radius: 16px; }
.cta-wide h2 { margin-top: 0; }

.site-footer { border-top: 1px solid #151822; margin-top: 3rem; padding: 1.5rem 1.25rem; color: var(--muted); display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--fg); }

/* Glitch effect */
.glitch {
  position: relative;
  text-shadow: 0 0 40px rgba(167,139,250,.5), 0 0 60px rgba(124,58,237,.4);
  animation: crtFlicker 6s infinite steps(40) alternate;
}
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute; left: 0; top: 0; overflow: hidden; mix-blend-mode: screen; opacity: .4;
}
.glitch::before { color: var(--accent); transform: translateX(2px); animation: glitchShift 2.2s infinite ease-in-out; opacity: .65; }
.glitch::after { color: var(--accent-2); transform: translateX(-2px); animation: glitchShift 2s infinite ease-in-out reverse; opacity: .7; }
@keyframes glitchShift { 0%, 100% { clip-path: inset(0 0 85% 0); } 8% { clip-path: inset(12% 0 68% 0); } 16% { clip-path: inset(38% 0 42% 0); } 24% { clip-path: inset(66% 0 14% 0); } 32% { clip-path: inset(52% 0 28% 0); } 40% { clip-path: inset(18% 0 62% 0); } 48% { clip-path: inset(0 0 85% 0); } 56% { clip-path: inset(22% 0 58% 0); } 64% { clip-path: inset(46% 0 34% 0); } 72% { clip-path: inset(74% 0 6% 0); } 80% { clip-path: inset(10% 0 70% 0); } 88% { clip-path: inset(40% 0 40% 0); } 96% { clip-path: inset(70% 0 10% 0); } }

/* CRT flicker + scanlines */
@keyframes crtFlicker {
  0% { filter: brightness(1) contrast(1); }
  30% { filter: brightness(1.05) contrast(1.02); }
  31% { filter: brightness(.9) contrast(1.05); }
  32% { filter: brightness(1.08) contrast(1.02); }
  60% { filter: brightness(1) contrast(1); }
  61% { filter: brightness(.95) contrast(1.03); }
  100% { filter: brightness(1) contrast(1); }
}

.glitch::after {
  background-image: repeating-linear-gradient(to bottom, rgba(255,255,255,.02) 0 1px, transparent 1px 3px);
  mix-blend-mode: screen; opacity: .7;
}


/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(12px); filter: saturate(.9) brightness(.95);
  transition: opacity .6s ease, transform .6s ease, filter .6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); filter: none; }

/* Card hover pulse and tilt */
/* убран старый tilt-эффект карточек */

/* Link underline reveal */
.prose a, .nav__list a { position: relative; }
.prose a::after, .nav__list a::after {
  content: ""; position: absolute; left: .6em; right: .6em; bottom: .35em; height: 1px; background: linear-gradient(90deg, transparent, var(--accent-2), transparent); transform: scaleX(0); transform-origin: center; transition: transform .25s ease; opacity: .7;
}
.prose a:hover::after, .nav__list a:hover::after { transform: scaleX(1); }

/* Page subtle vignette fade-in */
body.is-ready::before { content: ""; position: fixed; inset: 0; pointer-events: none; background: radial-gradient(1200px 800px at 50% -10%, rgba(167,139,250,.06), transparent 60%); animation: vignette 1.4s ease both; }
@keyframes vignette { from { opacity: 0; } to { opacity: 1; } }

/* Generic content pages */
.page-title { font-size: clamp(1.8rem, 4.5vw, 3rem); margin: .5rem 0 1rem; }
.lead { color: #d8d4e6; max-width: 60ch; }
.prose { color: var(--fg); max-width: 75ch; }
.prose h2 { margin-top: 2rem; font-size: 1.3rem; }
.prose p { color: #d2cde4; }
.prose a { color: var(--accent); }
.prose ul { padding-left: 1.2rem; }

/* Page transitions */
body.is-loading { opacity: 0; }
body.is-ready { opacity: 1; transition: opacity .5s ease; }

/* QR page tweaks */
.qr-wrap { display: grid; place-content: center; min-height: calc(100vh - 120px); text-align: center; gap: 1rem; }
.qr-wrap .hint { color: #d2cde4; }