/* ============================================================
   Biotrading Italia — Proton & Lioflor
   Единая линейка педиатрических БАД · Sorrento Pharm / Lumera FZE
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{margin:0;max-width:100%;overflow-x:hidden}

:root{
  /* neutral warm base */
  --ivory:#FBF7EF;
  --cream:#F4EEE1;
  --card:#ffffff;
  --ink:#232f38;
  --muted:#606c76;
  --line:#e9e0cf;
  --line-soft:#f0e9db;

  /* product accents */
  --proton:#154a94;
  --proton-2:#0f2f63;
  --proton-soft:#e9f1fc;
  --sun:#f3a71a;
  --sun-soft:#fdf0d6;

  --lioflor:#1c53a8;
  --lime:#84bf3c;
  --lime-2:#6ba52c;
  --lioflor-soft:#eef6e3;

  /* italian nods */
  --it-green:#3c9160;
  --it-red:#d6412b;

  --brand:#1f6f7a;          /* line/neutral accent (teal) */
  --brand-soft:#e4f0f0;

  --shadow-sm:0 2px 10px rgba(30,40,55,.06);
  --shadow:0 14px 40px rgba(30,45,70,.10);
  --shadow-lg:0 30px 70px rgba(25,40,65,.16);
  --radius:22px;
  --radius-lg:30px;
  --maxw:1180px;

  --ff-display:"Fraunces",Georgia,"Times New Roman",serif;
  --ff-body:"Nunito Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

body{
  font-family:var(--ff-body);
  color:var(--ink);
  background:var(--ivory);
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

h1,h2,h3,h4{font-family:var(--ff-display);font-weight:600;line-height:1.12;letter-spacing:-.01em;margin:0}
h1{font-size:clamp(2.1rem,5.4vw,3.9rem)}
h2{font-size:clamp(1.7rem,3.6vw,2.7rem)}
h3{font-size:clamp(1.2rem,2.1vw,1.5rem)}
p{margin:0 0 1rem}
.lead{font-size:clamp(1.05rem,1.6vw,1.28rem);color:var(--muted);line-height:1.6}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,4vw,34px)}
/* let grid/flex children shrink so long text wraps instead of overflowing */
.hero-grid>*,.phero-grid>*,.why>*,.prod-cards>*,.grid>*{min-width:0}
section{padding:clamp(56px,8vw,110px) 0}
.tight{padding:clamp(38px,5vw,66px) 0}

.eyebrow{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:var(--ff-body);font-weight:800;
  font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand);margin-bottom:1.1rem;
}
.eyebrow::before{content:"";width:26px;height:2px;background:currentColor;border-radius:2px}
.center{text-align:center}
.center .eyebrow::before{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;
  font-family:var(--ff-body);font-weight:800;font-size:1rem;
  padding:.85em 1.5em;border-radius:100px;border:0;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  line-height:1;white-space:nowrap;
}
.btn svg{width:1.05em;height:1.05em}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-proton{background:var(--proton);color:#fff}
.btn-proton:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(21,74,148,.32)}
.btn-lioflor{background:var(--lioflor);color:#fff}
.btn-lioflor:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(28,83,168,.30)}
.btn-ghost{background:transparent;border:1.6px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-lg{font-size:1.08rem;padding:1em 1.7em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,247,239,.82);backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.nav{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:900;letter-spacing:-.02em;font-size:1.12rem}
.brand .globe{
  width:34px;height:34px;border-radius:50%;flex:none;
  background:radial-gradient(circle at 32% 30%,#5aa0dd,#154a94 70%);
  position:relative;box-shadow:inset 0 0 0 2px rgba(255,255,255,.35);
}
.brand .globe::after{
  content:"";position:absolute;inset:7px 5px;border-radius:50%;
  background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(255,255,255,.7) 3px 4px);
  -webkit-mask:radial-gradient(circle,#000 62%,transparent 63%);
          mask:radial-gradient(circle,#000 62%,transparent 63%);
}
.brand small{display:block;font-family:var(--ff-body);font-weight:700;font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{font-weight:700;font-size:.96rem;padding:.5em .8em;border-radius:100px;color:var(--muted);transition:color .15s,background .15s}
.nav-links a:hover{color:var(--ink);background:var(--cream)}

/* audience toggle */
.aud-toggle{display:inline-flex;background:var(--cream);border:1px solid var(--line);border-radius:100px;padding:4px;gap:2px}
.aud-toggle button{
  font-family:var(--ff-body);font-weight:800;font-size:.82rem;
  border:0;background:transparent;color:var(--muted);
  padding:.5em .9em;border-radius:100px;cursor:pointer;transition:.18s;white-space:nowrap;
}
.aud-toggle button.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.nav-burger{display:none;margin-left:auto;background:none;border:0;cursor:pointer;padding:8px}
.nav-burger span{display:block;width:24px;height:2.4px;background:var(--ink);border-radius:3px;margin:5px 0;transition:.25s}

/* audience visibility */
body[data-mode="parents"] .pro-only{display:none !important}
body[data-mode="pro"] .parents-only{display:none !important}
.mode-note{font-size:.82rem;color:var(--muted)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding-top:clamp(30px,5vw,56px)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero-photo{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:7/6}
.hero-photo img{width:100%;height:100%;object-fit:cover}
.hero .pill-row{display:flex;flex-wrap:wrap;gap:10px;margin:1.5rem 0}
.pill{display:inline-flex;align-items:center;gap:.45em;background:#fff;border:1px solid var(--line);border-radius:100px;padding:.5em .95em;font-weight:800;font-size:.85rem;box-shadow:var(--shadow-sm)}
.pill.green{color:var(--it-green)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.6rem}
.hero-blob{position:absolute;border-radius:50%;filter:blur(10px);opacity:.5;z-index:-1}
.blob-1{width:420px;height:420px;background:var(--sun-soft);top:-120px;right:-90px}
.blob-2{width:360px;height:360px;background:var(--lioflor-soft);bottom:-140px;left:-120px}
.made-in{display:inline-flex;align-items:center;gap:.5em;font-weight:800;font-size:.82rem;color:var(--muted);margin-top:1.4rem}
.it-flag{width:22px;height:15px;border-radius:2px;overflow:hidden;display:inline-grid;grid-template-columns:1fr 1fr 1fr;box-shadow:var(--shadow-sm)}
.it-flag i{display:block}
.it-flag i:nth-child(1){background:#3c9160}.it-flag i:nth-child(2){background:#fff}.it-flag i:nth-child(3){background:#d6412b}

/* ---------- product cards (home) ---------- */
.prod-cards{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.pcard{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease;
}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.pcard-top{padding:34px 34px 0;position:relative;min-height:230px;display:flex;align-items:flex-end;justify-content:center}
.pcard.proton .pcard-top{background:#fff}
.pcard.lioflor .pcard-top{background:#fff}
.pcard-top img.pack{max-height:290px;width:auto;filter:none;transition:transform .3s}
.pcard:hover .pcard-top img.pack{transform:translateY(-6px) scale(1.02)}
.pcard-badge{position:absolute;top:20px;left:20px;font-weight:800;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:.45em .8em;border-radius:100px;color:#fff}
.pcard.proton .pcard-badge{background:var(--sun)}
.pcard.lioflor .pcard-badge{background:var(--lime-2)}
.pcard-body{padding:26px 34px 34px}
.pcard-body h3{font-size:1.7rem;margin-bottom:.2em}
.pcard .mol{font-weight:800;font-size:.86rem;letter-spacing:.02em;margin-bottom:.7rem}
.pcard.proton .mol{color:var(--proton)}
.pcard.lioflor .mol{color:var(--lioflor)}
.pcard ul{list-style:none;margin:0 0 1.3rem;padding:0}
.pcard li{position:relative;padding-left:1.7em;margin:.4em 0;font-size:.97rem}
.pcard li::before{content:"";position:absolute;left:0;top:.55em;width:9px;height:9px;border-radius:50%}
.pcard.proton li::before{background:var(--sun)}
.pcard.lioflor li::before{background:var(--lime)}

/* ---------- generic grids / feature cards ---------- */
.grid{display:grid;gap:24px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.fcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm);transition:.2s}
.fcard:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.fcard .ico{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:1.5rem;margin-bottom:16px;background:var(--brand-soft)}
.fcard h3{font-size:1.22rem;margin-bottom:.4rem}
.fcard p{color:var(--muted);font-size:.97rem;margin:0}

.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;box-shadow:var(--shadow-sm)}
.stat .num{font-family:var(--ff-display);font-weight:600;font-size:clamp(1.9rem,4vw,2.7rem);line-height:1;letter-spacing:-.02em}
.stat .lbl{color:var(--muted);font-size:.9rem;margin-top:.5rem}
.stat.proton .num{color:var(--proton)}.stat.lioflor .num{color:var(--lioflor)}

/* section tints */
.tint{background:var(--cream)}
.tint-proton{background:linear-gradient(180deg,#fff, var(--proton-soft))}
.tint-lioflor{background:linear-gradient(180deg,#fff, var(--lioflor-soft))}

/* ---------- why biotrading band ---------- */
.why{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(30px,5vw,60px);align-items:center}
.why-media{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px;text-align:center;box-shadow:var(--shadow)}
.why-media img{margin:0 auto 18px;max-width:280px}
.mfr{margin-bottom:16px}
.mfr-label{display:block;font-weight:800;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:.2em}
.mfr-name{font-family:var(--ff-display);font-weight:600;font-size:clamp(1.5rem,3vw,2rem);color:var(--proton-2);letter-spacing:-.01em}
.timeline{list-style:none;margin:1.4rem 0 0;padding:0}
.timeline li{display:flex;gap:16px;padding:12px 0;border-top:1px dashed var(--line)}
.timeline li:first-child{border-top:0}
.timeline .yr{font-family:var(--ff-display);font-weight:600;color:var(--brand);min-width:64px;font-size:1.15rem}

/* ---------- comparison table ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#fff}
table.cmp{border-collapse:collapse;width:100%;min-width:620px;font-size:.95rem}
table.cmp th,table.cmp td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
table.cmp thead th{background:var(--ink);color:#fff;font-family:var(--ff-body);font-weight:800;font-size:.86rem;letter-spacing:.02em}
table.cmp thead th:first-child{border-top-left-radius:var(--radius)}
table.cmp thead th:last-child{border-top-right-radius:var(--radius)}
table.cmp tbody tr:nth-child(even){background:#faf6ee}
table.cmp td:first-child{font-weight:700}
table.cmp .yes{color:var(--it-green);font-weight:800}
table.cmp .no{color:var(--it-red);font-weight:800}
.hl-proton{color:var(--proton);font-weight:800}
.hl-lioflor{color:var(--lioflor);font-weight:800}

/* evidence list (pro) */
.ev{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:14px;padding:18px 22px;margin:14px 0;box-shadow:var(--shadow-sm)}
.ev .src{font-size:.82rem;color:var(--muted);margin-top:.4rem}
.ev.proton{border-left-color:var(--proton)}
.ev.lioflor{border-left-color:var(--lioflor)}
.quote{font-family:var(--ff-display);font-style:italic;font-size:1.15rem;line-height:1.5}

.callout{background:var(--sun-soft);border:1px solid #f0d79a;border-radius:var(--radius);padding:24px 28px;display:flex;gap:16px;align-items:flex-start}
.callout .ico{font-size:1.6rem}
.callout.green{background:var(--lioflor-soft);border-color:#cfe3b3}
.callout.blue{background:var(--proton-soft);border-color:#c6dcf6}

/* buy section */
.soon-chip{display:inline-block;background:var(--sun);color:#fff;font-family:var(--ff-body);font-weight:800;font-size:.46em;letter-spacing:.08em;text-transform:uppercase;padding:.4em .85em;border-radius:100px;vertical-align:middle;transform:translateY(-.18em);box-shadow:0 6px 16px rgba(243,167,26,.35);animation:soonPulse 2.4s ease-in-out infinite}
@keyframes soonPulse{0%,100%{box-shadow:0 6px 16px rgba(243,167,26,.35)}50%{box-shadow:0 6px 22px rgba(243,167,26,.6)}}
.buy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:2rem}
.buy-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow-sm)}
.buy-card .ico{font-size:2rem;margin-bottom:.5rem}

/* ---------- product hero (subpage) ---------- */
.phero{padding-top:clamp(34px,5vw,60px)}
.phero-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,64px);align-items:center}
.phero-media{border-radius:var(--radius-lg);padding:0;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:1/1}
.phero-media img{width:100%;height:100%;object-fit:cover;max-height:none}
.phero.proton .phero-media{background:var(--proton-soft)}
.phero.lioflor .phero-media{background:var(--lioflor-soft)}

/* lifestyle band on product pages */
.lifeband{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,56px);align-items:center}
.lifeband .life-photo{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:1/1}
.lifeband .life-photo img{width:100%;height:100%;object-fit:cover}
@media(max-width:900px){.lifeband{grid-template-columns:1fr}.lifeband .life-photo{order:-1;aspect-ratio:4/3}}
.brandlogo{max-width:270px;margin-bottom:1.2rem}
.spec-list{list-style:none;padding:0;margin:1.5rem 0 0;display:grid;grid-template-columns:1fr 1fr;gap:2px;border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.spec-list div{background:#fff;padding:14px 18px}
.spec-list dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:800}
.spec-list dd{margin:.2em 0 0;font-weight:700}

.crumbs{font-size:.85rem;color:var(--muted);padding:18px 0 0}
.crumbs a:hover{color:var(--ink)}

.dose-note{font-size:.86rem;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:clamp(38px,6vw,66px);text-align:center;position:relative;overflow:hidden}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.8);max-width:620px;margin:1rem auto 1.8rem}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff}
.cta-band .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- footer ---------- */
footer{background:#1a2430;color:#c7d0d9;padding:clamp(48px,7vw,80px) 0 34px;font-size:.94rem}
footer .fgrid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;margin-bottom:36px}
footer h4{font-family:var(--ff-body);font-weight:800;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:#8b98a6;margin-bottom:1rem}
footer a{color:#c7d0d9}footer a:hover{color:#fff}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin:.5em 0}
footer .brand{color:#fff}
footer .brand small{color:#8b98a6}
.disclaimer{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;font-size:.82rem;color:#8b98a6;line-height:1.6}
.disclaimer strong{color:#c7d0d9}
.made-strip{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:14px;font-size:.82rem;color:#8b98a6}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero-grid,.prod-cards,.why,.phero-grid,.g2,.g3,.g4,.buy-grid{grid-template-columns:1fr}
  .g4{grid-template-columns:1fr 1fr}
  .hero-photo{order:-1;aspect-ratio:4/3}
  .nav-links,.nav .aud-toggle{display:none}
  .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--ivory);border-bottom:1px solid var(--line);padding:14px 20px;gap:6px;box-shadow:var(--shadow)}
  .nav-links.open a{padding:.7em .6em}
  .nav-links.open .aud-toggle{display:inline-flex;margin-top:8px;align-self:flex-start}
  .nav-burger{display:block}
  .spec-list{grid-template-columns:1fr}
  footer .fgrid{grid-template-columns:1fr 1fr;gap:28px}
  footer .fgrid>div:first-child{grid-column:1 / -1}
}
@media(max-width:560px){
  .g4{grid-template-columns:1fr}
  .buy-grid{grid-template-columns:1fr}
  body{font-size:16px}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ============================================================
   MOTION LAYER — переходы и микро-анимации
   ============================================================ */

/* page load fade-in + leave transition */
@keyframes pageIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
body{animation:pageIn .5s ease both}
body.page-leave{opacity:0;transform:translateY(-12px);transition:opacity .3s ease,transform .3s ease}

/* scroll progress bar */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:100;background:linear-gradient(90deg,var(--proton),var(--lime),var(--sun));transition:width .08s linear;box-shadow:0 0 8px rgba(21,74,148,.35)}

/* smart header on scroll */
.site-header{transition:box-shadow .3s ease,background .3s ease}
.site-header.scrolled{box-shadow:0 8px 30px rgba(30,45,70,.10);background:rgba(251,247,239,.9)}
.nav{transition:height .3s ease}
.site-header.scrolled .nav{height:60px}

/* staggered children reveal */
.stagger>*{opacity:0;transform:translateY(24px);transition:opacity .65s cubic-bezier(.2,.7,.2,1) var(--d,0ms),transform .65s cubic-bezier(.2,.7,.2,1) var(--d,0ms)}
.stagger.in>*{opacity:1;transform:none}

/* directional reveal variants */
.reveal[data-anim="left"]{transform:translateX(-32px)}
.reveal[data-anim="right"]{transform:translateX(32px)}
.reveal[data-anim="scale"]{transform:scale(.94)}
.reveal.in[data-anim]{transform:none}

/* image wipe-reveal */
.img-reveal{clip-path:inset(0 0 100% 0);transition:clip-path 1.05s cubic-bezier(.22,.7,.2,1)}
.img-reveal.in{clip-path:inset(0 0 0 0)}

/* 3D tilt on product cards */
.prod-cards{perspective:1300px}
.pcard{transition:transform .18s ease,box-shadow .25s ease;transform-style:preserve-3d;will-change:transform}

/* button shine sweep */
.btn-primary,.btn-proton,.btn-lioflor{position:relative;overflow:hidden}
.btn-primary::after,.btn-proton::after,.btn-lioflor::after{content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.4),transparent);transform:skewX(-20deg);transition:left .6s ease;pointer-events:none}
.btn-primary:hover::after,.btn-proton:hover::after,.btn-lioflor:hover::after{left:150%}

/* subtle parallax targets */
.hero-blob{will-change:transform}

/* tabular numerals so count-up doesn't jitter width */
.stat .num{font-variant-numeric:tabular-nums}

/* safety: if JS errors, reveal everything */
.anim-off .reveal,.anim-off .stagger>*,.anim-off .img-reveal{opacity:1!important;transform:none!important;clip-path:none!important}

@media(prefers-reduced-motion:reduce){
  body{animation:none}
  body.page-leave{opacity:1;transform:none;transition:none}
  .stagger>*{opacity:1;transform:none;transition:none}
  .img-reveal{clip-path:none;transition:none}
  .btn-primary::after,.btn-proton::after,.btn-lioflor::after{display:none}
  .pcard{transform:none!important}
  .soon-chip{animation:none}
}