/* ===== INSTINCT — сайт-визитка ===== */

:root{
  --black: #000000;
  --jet: #060D18;
  --gray-900: #0f1218;
  --gray-800: #161a22;
  --gray-700: #202020;
  --gray-500: #3C3C3C;
  --gray-300: #8a8f98;
  --white: #FFFFFF;
  --ivory: #FFFFEA;

  --mind: #D8FF00;
  --body: #FFC000;
  --berry: #FF0D68;
  --fruit: #619F00;
  --terracotta: #BE3A22;

  --fire: #ff6a3d;
  --air: #cfd6e0;
  --earth: #b08a63;
  --water: #4fb3ff;

  --font: 'Jost', system-ui, sans-serif;
  --wrap: 1160px;
  --radius: 18px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font);
  background: var(--jet);
  color: var(--white);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ margin:0; font-weight:800; letter-spacing:-0.01em; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(6,13,24,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  height: 72px;
}
.brand-logo{ height: 22px; width:auto; }
.nav{ display:flex; gap: 32px; }
.nav a{
  font-weight:600; font-size:0.95rem; opacity:0.85;
  transition: opacity .2s;
}
.nav a:hover{ opacity:1; }
.header-actions{ display:flex; align-items:center; gap:18px; }

.lang-toggle{
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  color: var(--white);
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight:700;
  display:flex; align-items:center; gap:6px;
}
.lang-opt{ opacity:0.4; transition: opacity .2s; }
.lang-opt.active{ opacity:1; color: var(--mind); }
.lang-sep{ opacity:0.3; }

.burger{
  display:none; flex-direction:column; gap:5px;
  background:none; border:none; padding:6px;
}
.burger span{ width:22px; height:2px; background:var(--white); display:block; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height: 92vh;
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
  background:
    radial-gradient(ellipse at 50% 20%, rgba(216,255,0,0.08), transparent 60%),
    linear-gradient(180deg, var(--black) 0%, var(--jet) 100%);
  text-align:center;
}
.hero-watermark{
  position:absolute; top:50%; left:50%;
  width: 900px; max-width: none;
  transform: translate(-50%,-50%);
  opacity: 0.035;
  pointer-events:none;
}
.hero-inner{ position:relative; z-index:1; display:flex; flex-direction:column; align-items:center; gap:22px; }
.hero-icon{ width:56px; opacity:0.9; margin-bottom:6px; }
.hero-title{
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  line-height: 1.04;
  text-transform: uppercase;
}
.hero-title span{ display:block; }
.hero-title span:nth-child(2){ color: var(--mind); }
.hero-sub{
  max-width: 560px;
  font-size: 1.1rem;
  color: var(--gray-300);
}
.scroll-cue{
  position:absolute; bottom:28px; left:50%; transform:translateX(-50%);
  color: var(--gray-300);
  animation: bounce 2s infinite;
}
@keyframes bounce{
  0%,100%{ transform: translate(-50%,0); }
  50%{ transform: translate(-50%,8px); }
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight:700; font-size:0.95rem;
  transition: transform .2s, background .2s, border-color .2s;
}
.btn-primary{
  background: var(--mind);
  color: var(--black);
}
.btn-primary:hover{ transform: translateY(-2px); }
.btn-outline{
  border: 1.5px solid rgba(255,255,255,0.3);
  color: var(--white);
  margin-top: 20px;
}
.btn-outline:hover{ border-color: var(--white); transform: translateY(-2px); }

/* ---------- Section chrome ---------- */
section{ padding: 110px 0; }

/* chapter marker — echoes the brandbook's own "ГЛАВА N." divider */
.chapter-mark{
  display:flex; align-items:center; gap:14px;
  margin-bottom: 20px;
}
.chapter-no{
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--mind);
  font-variant-numeric: tabular-nums;
}
.chapter-rule{
  width: 56px; height:1px;
  background: var(--mind);
  opacity: 0.5;
}
.chapter-label{
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-300);
}
.section-title{
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.015em;
  max-width: 780px;
  margin-bottom: 48px;
}
.contact .chapter-no{ color: var(--berry); }
.contact .chapter-rule{ background: var(--berry); }
.products .chapter-no{ color: var(--body); }
.products .chapter-rule{ background: var(--body); }

/* ---------- About ---------- */
.about{ background: var(--jet); }
.about-copy{
  display:grid; grid-template-columns: 1fr 1fr; gap: 40px;
  max-width: 980px;
  color: var(--gray-300);
  font-size: 1.02rem;
  margin-bottom: 72px;
}

.fact-strip{
  display:flex; flex-wrap:wrap; gap: 32px;
  margin: 0 0 56px;
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.fact-strip > div{ min-width: 160px; }
.fact-strip dt{
  font-size: 0.78rem; color: var(--gray-300);
  margin-bottom: 6px;
}
.fact-strip dd{
  margin:0; font-size: 1.5rem; font-weight: 800; color: var(--mind);
}

.elements-intro{
  font-size: 1.05rem; font-weight:600;
  margin-bottom: 20px;
  color: var(--gray-300);
}

.elements-grid{
  display:grid; grid-template-columns: repeat(4,1fr); gap: 16px;
}
.element-card{
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  min-height: 300px;
  padding: 24px;
  display:flex; flex-direction:column; justify-content:flex-end;
  background-size: cover;
  background-position: center;
  isolation: isolate;
}
.element-card::before{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(6,13,24,0.05) 25%, rgba(6,13,24,0.95) 88%);
  z-index:0;
}
.element-icon-badge, .element-card h3, .element-tag, .element-card p:last-child{
  position:relative; z-index:1;
}
.element-icon-badge{
  display:flex; align-items:center; justify-content:center;
  width:46px; height:46px;
  border-radius: 50%;
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.25);
  margin-bottom: 16px;
}
.element-icon{
  display:block;
  width:20px; height:20px;
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-position: center; mask-position: center;
}
.icon-lightning{ -webkit-mask-image: url(../assets/icons/lightning.svg); mask-image: url(../assets/icons/lightning.svg); }
.icon-eye{ -webkit-mask-image: url(../assets/icons/Eye.svg); mask-image: url(../assets/icons/Eye.svg); }
.icon-biceps{ -webkit-mask-image: url(../assets/icons/Biceps.svg); mask-image: url(../assets/icons/Biceps.svg); }
.icon-drops{ -webkit-mask-image: url(../assets/icons/Drops.svg); mask-image: url(../assets/icons/Drops.svg); }
.element-fire .element-icon{ background-color: var(--fire); }
.element-air .element-icon{ background-color: var(--gray-900); }
.element-earth .element-icon{ background-color: var(--earth); }
.element-water .element-icon{ background-color: var(--jet); }
.element-card h3{ font-size:1.2rem; margin-bottom:4px; color:#fff; }
.element-tag{
  font-size:0.75rem; font-weight:700; text-transform:uppercase; letter-spacing:0.08em;
  margin-bottom:12px;
}
.element-card p:last-child{ color: rgba(255,255,255,0.75); font-size:0.9rem; }

.element-fire{ background-image: url(../assets/img/textures/fire.jpg); }
.element-fire .element-tag{ color: var(--fire); }

.element-air{ background-image: url(../assets/img/textures/air.jpg); }
.element-air .element-tag{ color: var(--air); }

.element-earth{ background-image: url(../assets/img/textures/earth.jpg); }
.element-earth .element-tag{ color: var(--earth); }

.element-water{ background-image: url(../assets/img/textures/water.jpg); }
.element-water .element-tag{ color: var(--water); }

/* ---------- Products ---------- */
.products{ background: var(--gray-900); }

.product-features{ display:flex; flex-direction:column; }
.product-feature{
  display:grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items:center;
  padding: 64px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.product-features > :first-child{ padding-top:0; }
.product-features > :last-child{ border-bottom:none; padding-bottom:0; }
.product-feature.reverse{ grid-template-columns: 1fr 1.1fr; }
.product-feature.reverse .feature-media{ order:2; }
.product-feature.reverse .feature-text{ order:1; }
.feature-zeeps{ grid-template-columns: 0.85fr 1.25fr; }

.feature-media{ display:flex; gap:16px; }
.feature-media figure{ flex:1; min-width:0; margin:0; }
.feature-media img{
  width:100%; height:auto; aspect-ratio: 1156/1300; object-fit: cover;
  border-radius: 18px;
  background: var(--ivory);
}
.feature-media figcaption{
  text-align:center; margin-top:12px;
  font-size:0.82rem; color: var(--gray-300);
}

.feature-kicker{
  display:block;
  font-size: 0.9rem; font-weight:700;
  margin-bottom:10px;
}
.feature-drops .feature-kicker{ color: var(--mind); }
.feature-boosters .feature-kicker{ color: var(--body); }
.feature-zeeps .feature-kicker{ color: var(--berry); }

.feature-text h3{ font-size: clamp(1.7rem, 2.6vw, 2.3rem); margin-bottom: 16px; }
.feature-text > p{ color: var(--gray-300); font-size: 1rem; max-width: 460px; margin-bottom: 22px; }

.feature-variants{ margin: 0 0 20px; padding:0; list-style:none; display:flex; flex-direction:column; gap:10px; }
.feature-variants li{ font-size:0.95rem; color: var(--gray-300); }
.feature-variants b{ color: var(--white); }

.feature-usage{
  font-size: 0.85rem; color: var(--gray-300); opacity:0.75;
  margin-bottom: 22px !important;
}

/* ---------- Contact ---------- */
.contact{ background: var(--jet); }
.contact-grid{
  display:grid; grid-template-columns: repeat(3,1fr); gap:20px;
  max-width: 700px;
}
.contact-card{
  display:block;
  background: var(--gray-900);
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  padding: 30px 22px;
  text-align:center;
  transition: border-color .2s, transform .2s;
}
a.contact-card:hover{ border-color: var(--mind); transform: translateY(-2px); }
.contact-icon{
  display:block;
  width:26px; height:26px; margin: 0 auto 16px;
  background-color: var(--mind);
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-position: center; mask-position: center;
}
.icon-phone{ -webkit-mask-image: url(../assets/icons/phone.svg); mask-image: url(../assets/icons/phone.svg); }
.icon-instagram{ -webkit-mask-image: url(../assets/icons/instagram.svg); mask-image: url(../assets/icons/instagram.svg); }
.icon-whatsapp{ -webkit-mask-image: url(../assets/icons/whatsapp.svg); mask-image: url(../assets/icons/whatsapp.svg); }
.contact-card h3{ font-size:1.05rem; margin-bottom:6px; }
.contact-card p{ color: var(--gray-300); font-size:0.85rem; }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--black);
  padding: 36px 0;
  border-top: 1px solid rgba(255,255,255,0.07);
}
.footer-inner{ display:flex; align-items:center; justify-content:center; gap:14px; }
.footer-mark{ width:22px; opacity:0.6; }
.footer-inner p{ color: var(--gray-300); font-size:0.85rem; }

/* ---------- Accessibility ---------- */
a:focus-visible, button:focus-visible{
  outline: 2px solid var(--mind);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .scroll-cue{ animation:none; }
  .btn-primary:hover, .btn-outline:hover{ transform:none; }
  *{ transition-duration: 0.01ms !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .about-copy{ grid-template-columns: 1fr; }
  .elements-grid{ grid-template-columns: 1fr 1fr; }
  .fact-strip{ gap:24px; }
  section{ padding: 72px 0; }
}

@media (max-width: 780px){
  .product-feature,
  .product-feature.reverse,
  .feature-zeeps{
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 48px 0;
  }
  .product-feature.reverse .feature-media{ order:0; }
  .product-feature.reverse .feature-text{ order:1; }
  .feature-text > p{ max-width:none; }
}

@media (max-width: 640px){
  .nav{
    position:absolute; top:72px; left:0; right:0;
    background: var(--jet);
    flex-direction:column; gap:0;
    max-height:0; overflow:hidden;
    transition: max-height .3s ease;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav.open{ max-height:260px; }
  .nav a{ padding: 16px 24px; border-top:1px solid rgba(255,255,255,0.06); }
  .burger{ display:flex; }
  .elements-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .feature-media{ flex-wrap:wrap; }
  .feature-media figure{ flex: 1 1 40%; }
}