/* ============================================================
   Daily Frame / Каркас дня — RU landing
   Type: Bitter (display, slab serif — Black/ExtraBold) + Inter (text/UI, 300–700)
         + Bergen Mono (technical labels/readouts)
   ============================================================ */

/* ---------- @font-face (self-hosted, subset woff2 — latin+cyrillic) ---------- */
/* Bitter — headlines. Black (900) primary; ExtraBold (800) available; Light (300) for .lc contrast runs */
@font-face{font-family:"Bitter";src:url("../../fonts/Bitter-Black.woff2") format("woff2");font-weight:900;font-style:normal;font-display:swap;}
@font-face{font-family:"Bitter";src:url("../../fonts/Bitter-ExtraBold.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap;}
@font-face{font-family:"Bitter";src:url("../../fonts/Bitter-Light.woff2") format("woff2");font-weight:300;font-style:normal;font-display:swap;}
/* Inter — body + UI */
@font-face{font-family:"Inter";src:url("../../fonts/Inter-Light.woff2") format("woff2");font-weight:300;font-style:normal;font-display:swap;}
@font-face{font-family:"Inter";src:url("../../fonts/Inter-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap;}
@font-face{font-family:"Inter";src:url("../../fonts/Inter-Medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap;}
@font-face{font-family:"Inter";src:url("../../fonts/Inter-SemiBold.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap;}
@font-face{font-family:"Inter";src:url("../../fonts/Inter-Bold.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap;}
/* Bergen Mono — unchanged */
@font-face{font-family:"Bergen Mono";src:url("../../fonts/BergenMono-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap;}
@font-face{font-family:"Bergen Mono";src:url("../../fonts/BergenMono-SemiBold.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap;}

/* ---------- tokens ---------- */
:root{
  --ink-dark:#0A0A0C;          /* near-black page top */
  --ink-light:#F9F8F6;         /* warm off-white lower */
  --text-on-dark:#F2F1ED;
  --text-on-light:#131316;
  --muted-on-dark:rgba(242,241,237,.56);
  --muted-on-light:rgba(19,19,22,.58);
  --hair-on-dark:rgba(242,241,237,.14);
  --hair-on-light:rgba(19,19,22,.14);
  --lime:#C6F135;              /* assembled / alive — rationed */
  --orange:#E8804A;            /* chaos / scattered — rare */

  --display:"Bitter",Georgia,"Times New Roman",serif;
  --text:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Bergen Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  --maxw:1280px;
  --gutter:clamp(20px,5vw,72px);
  --spine-axis:26%;            /* desktop spine x position (left gutter) */

  /* fluid type scale — reduced vs the old condensed face; Bitter is ~2× wider per glyph,
     so uppercase Cyrillic needs smaller max sizes to avoid overflow/awkward wraps */
  --fs-hero:clamp(2.4rem,5.4vw,4.9rem);
  --fs-h2:clamp(2rem,4.4vw,3.9rem);
  --fs-h3:clamp(1.4rem,2.2vw,1.95rem);
  --fs-quote:clamp(1.8rem,4.2vw,3.6rem);
  --fs-lead:clamp(1.05rem,1.5vw,1.35rem);
  --fs-body:1.02rem;
  --fs-label:.72rem;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html,body{overflow-x:clip;max-width:100%}
body{
  font-family:var(--text);
  font-weight:400;               /* Inter reads best at 400 for body copy */
  color:var(--text-on-dark);
  background:var(--ink-dark);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--lime);color:#0A0A0C}

/* ---------- spine canvas (fixed, above section bg, below content) ---------- */
#spine{position:fixed;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}

/* ---------- layout helpers ----------
   Layering so the spine canvas sits BETWEEN section backgrounds and content:
   section bg (::before, z -1) < #spine (z 1) < section content (.wrap, z 2).
   Sections must NOT create a stacking context (no z-index / transform on them). */
.section{position:relative;padding:clamp(90px,13vh,180px) 0}
.section > .wrap,.footer > .wrap{position:relative;z-index:2}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.section::before,.footer::before{content:"";position:absolute;inset:0;z-index:-1}
[data-tone="dark"]::before{background:var(--ink-dark)}
[data-tone="light"]::before{background:var(--ink-light)}
.dark{color:var(--text-on-dark)}
.light{color:var(--text-on-light)}
.section.transparent::before{background:transparent}

/* content sits to the RIGHT of the spine on desktop (asymmetric) */
.offset{padding-left:0}
@media(min-width:900px){
  .offset{padding-left:36%}   /* clear of the spine tower in the left gutter */
  .beta.offset{padding-left:44%}  /* extra gap so the signup text clears the forked lattice */
}

/* ---------- shared type ---------- */
.eyebrow{
  font-family:var(--mono);font-size:var(--fs-label);font-weight:400;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted-on-dark);display:inline-flex;align-items:center;gap:12px;
}
.light .eyebrow{color:var(--muted-on-light)}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--lime)}

.secnum{
  font-family:var(--mono);font-size:var(--fs-label);letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted-on-dark);display:block;margin-bottom:24px;
}
.light .secnum{color:var(--muted-on-light)}
.secnum b{color:var(--lime);font-weight:600}

/* Bitter is a slab serif: no negative tracking (serifs need their side-bearings),
   and a touch more line-height than the old condensed .92 so uppercase Cyrillic breathes */
h1,h2,h3{font-family:var(--display);font-weight:900;line-height:1.0;letter-spacing:0;text-transform:uppercase}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3);line-height:1.05}
/* mixed-case emphasis: lighter lowercase runs inside a heading (Bitter Light) */
.lc{font-weight:300;text-transform:none;letter-spacing:0}
.hl{color:var(--lime)}
.hl-o{color:var(--orange)}

.lead{font-family:var(--text);font-weight:300;font-size:var(--fs-lead);line-height:1.5;max-width:44ch;text-transform:none}
.muted{color:var(--muted-on-dark)}
.light .muted{color:var(--muted-on-light)}

/* ---------- buttons ---------- */
.btns{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:44px}
.btn{
  font-family:var(--text);font-weight:500;font-size:1rem;line-height:1;
  padding:17px 26px;border-radius:2px;cursor:pointer;border:1px solid transparent;
  display:inline-flex;align-items:center;gap:10px;
  transition:transform .15s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--lime);color:#0A0A0C;box-shadow:0 0 0 rgba(198,241,53,0)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px -8px rgba(198,241,53,.5)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--hair-on-dark);color:var(--text-on-dark)}
.btn-ghost:hover{border-color:var(--text-on-dark)}
.btn-ghost svg{color:var(--lime)}
.light .btn-ghost{border-color:var(--hair-on-light);color:var(--text-on-light)}
.btn-ghost:hover svg{transform:translateX(3px);transition:transform .2s ease}

/* ---------- little instrument readouts (margins) ---------- */
.readout{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:2px;
  border:1px solid var(--hair-on-dark);color:var(--muted-on-dark);white-space:nowrap;
  background:rgba(255,255,255,.015);backdrop-filter:blur(2px);
}
.light .readout{border-color:var(--hair-on-light);color:var(--muted-on-light);background:rgba(0,0,0,.015)}
.readout b{color:var(--text-on-dark);font-weight:600}
.light .readout b{color:var(--text-on-light)}
.readout .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 8px var(--lime)}
.readout-stack{position:absolute;display:flex;flex-direction:column;gap:10px;z-index:2}

/* decorative geometry annotation */
.annot{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted-on-dark);line-height:1.7;opacity:.7;position:relative;z-index:2;
}
.light .annot{color:var(--muted-on-light)}

/* ============================================================
   1 — HERO
   ============================================================ */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding-top:120px;padding-bottom:80px;overflow:hidden}
.topbar{position:absolute;top:0;left:0;right:0;z-index:3;display:flex;justify-content:space-between;align-items:center;padding:26px var(--gutter)}
.logo{font-family:var(--display);font-weight:900;font-size:1.15rem;letter-spacing:.02em;text-transform:uppercase}
.logo .live{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--lime);margin-left:8px;vertical-align:middle;box-shadow:0 0 10px var(--lime);animation:pulse 2.6s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(198,241,53,.5)}70%{box-shadow:0 0 0 9px rgba(198,241,53,0)}100%{box-shadow:0 0 0 0 rgba(198,241,53,0)}}
.topnav{display:flex;gap:26px;align-items:center;font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-on-dark)}
.topnav a:hover{color:var(--text-on-dark)}
/* right cluster: section nav + language switcher */
.topbar-right{display:flex;align-items:center;gap:26px}
.topbar .langtoggle{flex:0 0 auto}

.hero h1{font-size:var(--fs-hero);margin:26px 0 0;max-width:26ch;line-height:1.02;text-wrap:balance}
.hero .lead{margin-top:36px}
.hero .readout-stack{right:var(--gutter);top:38%}
@media(max-width:899px){.hero .readout-stack{display:none}}

/* ============================================================
   2 — PROBLEM (slash cards)
   ============================================================ */
.slash-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:64px;background:var(--hair-on-dark);border:1px solid var(--hair-on-dark)}
.light .slash-cards{background:var(--hair-on-light);border-color:var(--hair-on-light)}
.scard{background:var(--ink-dark);padding:34px 28px 30px;position:relative;min-height:230px;display:flex;flex-direction:column}
.light .scard{background:var(--ink-light)}
.scard .idx{font-family:var(--mono);font-weight:600;font-size:.8rem;letter-spacing:.1em;color:var(--orange)}
.scard h3{margin:auto 0 14px;font-size:clamp(1.5rem,2.6vw,2rem)}
.scard p{font-size:var(--fs-body);color:var(--muted-on-dark);text-transform:none;max-width:34ch}
.light .scard p{color:var(--muted-on-light)}
.scard::after{content:"";position:absolute;left:28px;bottom:0;width:34px;height:3px;background:var(--orange);opacity:.0;transition:opacity .25s,width .25s}
.scard:hover::after{opacity:1;width:60px}

/* ============================================================
   3 — WHAT'S INSIDE (tabs + feature)
   ============================================================ */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px}
.chip{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  padding:10px 16px;border:1px solid var(--hair-on-light);border-radius:2px;cursor:pointer;
  color:var(--muted-on-light);background:transparent;transition:.2s;user-select:none;
}
.chip:hover{border-color:var(--text-on-light);color:var(--text-on-light)}
.chip[aria-selected="true"]{background:var(--text-on-light);color:var(--ink-light);border-color:var(--text-on-light)}

.feature{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(28px,5vw,72px);margin-top:56px;align-items:center}
.feature .ftext h3{margin-bottom:18px;text-transform:none;font-family:var(--display);letter-spacing:0}
.feature .ftext p{font-size:var(--fs-lead);color:var(--muted-on-light);max-width:42ch}
.feature .ftag{margin-bottom:18px}
.shot{
  position:relative;border:1px solid var(--hair-on-light);border-radius:4px;aspect-ratio:16/10;
  background:
     linear-gradient(135deg,rgba(198,241,53,.06),transparent 60%),
     repeating-linear-gradient(0deg,rgba(19,19,22,.03) 0 1px,transparent 1px 40px),
     repeating-linear-gradient(90deg,rgba(19,19,22,.03) 0 1px,transparent 1px 40px),
     #fff;
  overflow:hidden;display:flex;align-items:center;justify-content:center;
}
.shot img{width:100%;height:100%;object-fit:cover}
.shot .stub{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-on-light);text-align:center;padding:20px;line-height:1.9}
.shot .stub .big{font-family:var(--display);font-size:2.4rem;color:var(--text-on-light);display:block;margin-bottom:8px}
.shot .browserbar{position:absolute;top:0;left:0;right:0;height:34px;border-bottom:1px solid var(--hair-on-light);display:flex;align-items:center;gap:6px;padding:0 12px}
.shot .browserbar i{width:9px;height:9px;border-radius:50%;background:var(--hair-on-light)}

/* ============================================================
   4 — FOR WHOM
   ============================================================ */
.who-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.wcard{border:1px solid var(--hair-on-light);border-radius:4px;padding:30px 26px;background:#fff;transition:.25s;position:relative}
.wcard:hover{transform:translateY(-4px);border-color:rgba(19,19,22,.3)}
.wcard .no{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;color:var(--muted-on-light);margin-bottom:26px;display:block}
.wcard h3{text-transform:none;font-family:var(--display);font-size:1.6rem;margin-bottom:12px;letter-spacing:0}
.wcard p{font-size:var(--fs-body);color:var(--muted-on-light)}
.wcard .vtx{position:absolute;top:26px;right:26px;width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px var(--lime)}

/* ============================================================
   5 — PRO strip (dark)
   ============================================================ */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:56px}
.plan{border:1px solid var(--hair-on-dark);border-radius:4px;padding:36px 32px;position:relative}
.plan.pro{border-color:rgba(198,241,53,.4)}
.plan .ptitle{font-family:var(--display);font-size:1.9rem;text-transform:uppercase;display:flex;align-items:baseline;gap:12px;margin-bottom:6px}
.plan .ppill{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;padding:4px 8px;border-radius:2px;text-transform:uppercase}
.plan.free .ppill{border:1px solid var(--hair-on-dark);color:var(--muted-on-dark)}
.plan.pro .ppill{background:var(--lime);color:#0A0A0C}
.plan .psub{font-size:1rem;color:var(--muted-on-dark);text-transform:none;margin-bottom:26px}
.plan ul{list-style:none;display:flex;flex-direction:column;gap:18px}
.plan li{display:flex;gap:14px;font-size:1.16rem;line-height:1.4;color:var(--text-on-dark);align-items:flex-start}
.plan li svg{flex:0 0 auto;width:19px;height:19px;margin-top:4px;color:var(--lime)}
.plan li b{font-weight:600;color:var(--text-on-dark)}
.plan li span{color:rgba(242,241,237,.86);font-weight:400}
.plan .btn{margin-top:32px;width:100%;justify-content:center}
/* Pro "coming soon" callout (no buy button yet) */
.pro-status{font-family:var(--mono);font-size:.66rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-on-dark);margin-top:32px;display:inline-flex;align-items:center;gap:8px}
.pro-status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-ochre);box-shadow:0 0 8px var(--accent-ochre)}
.pro-note{margin-top:12px;padding:16px 18px;border:1px solid rgba(198,241,53,.28);border-left:3px solid var(--lime);border-radius:3px;background:rgba(198,241,53,.05);font-size:1.02rem;line-height:1.45;color:var(--text-on-dark)}
.pro-note .hl{font-weight:600}

/* ============================================================
   Interstitial pull-quotes
   ============================================================ */
.quote{position:relative;padding:clamp(80px,15vh,190px) 0;text-align:left}
.quote .wrap{max-width:1100px}
.quote .qlabel{display:block;font-family:var(--mono);font-size:.7rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--muted-on-dark);margin-bottom:22px}
.light.quote .qlabel{color:var(--muted-on-light)}
.quote .qlabel::before{content:"";display:inline-block;width:22px;height:1px;background:var(--lime);vertical-align:middle;margin-right:12px}
.quote p{font-family:var(--display);font-weight:900;text-transform:uppercase;font-size:var(--fs-quote);line-height:1.02;letter-spacing:0;max-width:22ch;overflow-wrap:break-word}
.quote .qmeta{font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;margin-top:26px;color:var(--muted-on-dark)}
.light.quote .qmeta{color:var(--muted-on-light)}

/* ============================================================
   6 — BETA
   ============================================================ */
.beta .wrap{max-width:820px}
.betaform{display:flex;gap:12px;margin-top:40px;max-width:520px;flex-wrap:wrap}
.betaform input{
  flex:1 1 240px;font-family:var(--text);font-size:1rem;padding:16px 18px;
  border:1px solid var(--hair-on-light);border-radius:2px;background:#fff;color:var(--text-on-light);
}
.betaform input:focus{outline:none;border-color:var(--text-on-light)}
.betaform .btn{flex:0 0 auto}
.beta .note{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-on-light);margin-top:18px}
.beta .ok{color:var(--text-on-light);font-family:var(--text);text-transform:none;letter-spacing:0;font-size:1rem;margin-top:18px;display:none}
.beta .ok.show{display:block}

/* ============================================================
   7 — FOOTER
   ============================================================ */
.footer{color:var(--text-on-dark);position:relative;padding:70px 0 46px;border-top:1px solid var(--hair-on-dark)}
.footer .frow{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap}
.footer .logo{font-size:1.4rem}
.footer .flinks{display:flex;gap:24px;font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-on-dark);flex-wrap:wrap}
.footer .flinks a:hover{color:var(--text-on-dark)}
.langtoggle{display:inline-flex;border:1px solid var(--hair-on-dark);border-radius:2px;overflow:hidden;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em}
.langtoggle a{padding:8px 12px;color:var(--muted-on-dark)}
.langtoggle a[aria-current="true"]{background:var(--text-on-dark);color:var(--ink-dark)}
.copyright{margin-top:40px;font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-on-dark)}

/* ---------- responsive ---------- */
@media(max-width:899px){
  :root{--spine-axis:70%}   /* pulled inward so the bottom core knot stays fully on-screen */
  .slash-cards{grid-template-columns:1fr}
  .feature{grid-template-columns:1fr}
  .who-cards{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .topnav{display:none}
  .hero h1{max-width:100%}
  /* decorative geometry annotation overlaps the CTA on narrow screens
     (taller headline pushes buttons into it) — hide, like the readout-stack */
  .hero .spine-annot{display:none}
}
@media(max-width:520px){
  .betaform{flex-direction:column}
  .betaform .btn{width:100%;justify-content:center}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}