/* =========================
   AVIA MASTERS — SKY/TECH THEME
   Palette: deep sky blue + orange/yellow accent
   ========================= */

:root{
  --bg: #050A16;
  --bg2:#071026;
  --card:#0B1533;

  --text:#EAF2FF;
  --muted:#A6B6DA;

  --sky:#2EA8FF;
  --sky2:#7AD7FF;
  --sun:#FFB400;
  --sun2:#FF6A00;

  --border: rgba(46,168,255,.20);
  --border2: rgba(255,180,0,.18);

  --shadow: 0 14px 46px rgba(0,0,0,.55);
  --radius: 18px;
  --radius2: 26px;

  --max: 1120px;
}

*{ box-sizing:border-box }
html,body{ height:100% }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.65;

  background:
    radial-gradient(1100px 700px at 18% 10%, rgba(46,168,255,.24), transparent 60%),
    radial-gradient(900px 600px at 85% 22%, rgba(255,180,0,.18), transparent 60%),
    radial-gradient(900px 520px at 55% 95%, rgba(122,215,255,.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

a{ color: var(--sky2); text-decoration:none; }
a:hover{ text-decoration: underline; }

.content,
.page-wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 18px 86px;
}

/* ===== TOP NAV ===== */
.topbar{
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(5,10,22,.62);
  border-bottom: 1px solid rgba(46,168,255,.18);
}
.topbar-inner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 0;
}
.brand-logo{
  width: 38px;
  height: 38px;
  border-radius: 14px;
  border: 1px solid rgba(255,180,0,.22);
  background: rgba(255,255,255,.06);
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(0,0,0,.38);
}
.brand-title{
  display:flex;
  flex-direction:column;
  line-height:1.05;
}
.brand-title b{
  font-size: 14px;
  letter-spacing:.2px;
}
.brand-title span{
  font-size: 12px;
  color: rgba(234,242,255,.70);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 44vw;
}

.nav{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items:center;
  justify-content:flex-end;
}
.nav a{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  color: rgba(234,242,255,.90);
  font-weight: 900;
  font-size: 13px;
  text-decoration:none !important;
}
.nav a:hover{
  border-color: rgba(46,168,255,.28);
  filter: brightness(1.05);
}

/* ===== HERO ===== */
.hero{
  position: relative;
  padding: 46px 18px 36px;
  border-bottom: 1px solid rgba(46,168,255,.18);
  overflow:hidden;
  background:
    radial-gradient(1200px 600px at 12% 10%, rgba(46,168,255,.26), transparent 60%),
    radial-gradient(900px 520px at 90% 20%, rgba(255,106,0,.18), transparent 62%),
    linear-gradient(180deg, rgba(5,10,22,.35), rgba(5,10,22,0));
}
.hero:before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle at 15% 35%, rgba(255,255,255,. мать) , transparent 0); /* placeholder fix removed below */
  opacity: 0;
  pointer-events:none;
}
/* “Cloud grid” */
.hero:after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: .20;
  pointer-events:none;
}

.hero-content{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px;
  position: relative;
  z-index: 2;
}

h1,h2,h3{ line-height:1.15; margin: 0 0 14px; }
h1{ font-size: clamp(28px, 3.6vw, 44px); letter-spacing:.2px; }
h2{ font-size: clamp(20px, 2.4vw, 28px); color:#F3F7FF; }
p{ margin: 0 0 12px; color: var(--text); }
.hero-subtitle{ color: var(--muted); max-width: 820px; margin-top: 10px; }

/* ===== Sections ===== */
section{
  margin: 22px 0;
  padding: 22px 20px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(11,21,51,.92), rgba(7,16,38,.90));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow:hidden;
}
section:before{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(560px 240px at 18% 0%, rgba(46,168,255,.20), transparent 62%),
    radial-gradient(420px 220px at 90% 8%, rgba(255,180,0,.12), transparent 64%);
  opacity:.85;
  pointer-events:none;
}
section > *{ position:relative; z-index:1; }

/* ===== Buttons ===== */
.btn-primary,
.btn-secondary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 14px 18px;
  border-radius: 999px;
  font-weight: 950;
  letter-spacing:.2px;
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform .18s ease, filter .18s ease, box-shadow .18s ease;
  text-decoration:none !important;
  user-select:none;
  white-space:nowrap;
}
.btn-primary{
  color:#07101E;
  background: linear-gradient(90deg, var(--sky), var(--sun));
  box-shadow:
    0 14px 34px rgba(46,168,255,.18),
    0 14px 34px rgba(255,180,0,.14);
}
.btn-primary:hover{ transform: translateY(-1px); filter: brightness(1.06); }

.btn-secondary{
  color: var(--text);
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.14);
  box-shadow: 0 12px 28px rgba(0,0,0,.35);
}
.btn-secondary:hover{
  transform: translateY(-1px);
  border-color: rgba(46,168,255,.30);
  filter: brightness(1.05);
}

/* ===== Pills / breadcrumbs (если используешь) ===== */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  color: rgba(234,242,255,.74);
  font-size: 13px;
  margin-top: 12px;
}
.breadcrumbs a{ color: rgba(122,215,255,.92); text-decoration:none; font-weight:900; }
.breadcrumbs a:hover{ text-decoration: underline; }

.mini-links{ display:flex; flex-wrap:wrap; gap:10px; margin-top: 14px; }
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  color: rgba(234,242,255,.88);
  font-weight: 900;
  font-size: 13px;
  text-decoration:none !important;
}
.pill:hover{ border-color: rgba(46,168,255,.28); filter: brightness(1.05); }

/* ===== Footer ===== */
.footer{
  text-align:center;
  padding: 34px 16px 56px;
  color: rgba(234,242,255,.70);
  font-size: 13px;
}

/* ===== Sticky CTA + ScrollTop ===== */
#scrollTopBtn{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 999;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid rgba(46,168,255,.28);
  background: rgba(5,10,22,.55);
  color: rgba(234,242,255,.92);
  box-shadow: 0 14px 34px rgba(0,0,0,.45);
  cursor:pointer;
  opacity: 0;
  pointer-events:none;
  transform: translateY(10px);
  transition: opacity .22s ease, transform .22s ease, filter .22s ease;
}
#scrollTopBtn:hover{ filter: brightness(1.08); }
#scrollTopBtn.is-visible{
  opacity: 1;
  pointer-events:auto;
  transform: translateY(0);
}

.sticky-cta{
  position: fixed;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  bottom: 18px;
  z-index: 998;
  opacity: 0;
  pointer-events:none;
  transition: opacity .22s ease, transform .22s ease, filter .22s ease;
  width: min(520px, calc(100% - 28px));
}
.sticky-cta.is-visible{
  opacity: 1;
  pointer-events:auto;
  transform: translateX(-50%) translateY(0);
}
.sticky-cta a{
  width: 100%;
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 999px;
  font-weight: 950;
  letter-spacing:.2px;
  color:#07101E;
  background: linear-gradient(90deg, var(--sky), var(--sun));
  box-shadow:
    0 16px 36px rgba(46,168,255,.18),
    0 16px 36px rgba(255,180,0,.14);
  text-decoration:none !important;
}
.sticky-cta a:hover{ filter: brightness(1.06); }

:focus-visible{
  outline: 2px solid rgba(255,180,0,.85);
  outline-offset: 3px;
  border-radius: 10px;
}

/* ===== Mobile ===== */
@media (max-width: 760px){
  .content,.page-wrap{ padding: 22px 14px 86px; }
  section{ padding: 18px 14px; margin: 18px 0; }
  .btn-primary,.btn-secondary{ width:100%; padding: 14px 16px; }
  .topbar-inner{ padding: 10px 14px; }
  .brand-title span{ max-width: 58vw; }
  #scrollTopBtn{ right: 12px; bottom: 12px; }
}