/* ==========================================================================
   RetroBoard — лендинг. Полная таблица стилей.
   Критические правила (reset, header, hero, кнопки) продублированы инлайн
   в <head> index.html для быстрого первого экрана. Здесь — полный набор.
   ========================================================================== */

*,*::before,*::after{box-sizing:border-box}

:root{
  --c-primary:#1e88e5;
  --c-primary-dark:#1565c0;
  --c-accent:#42a5f5;
  --c-ink:#0f172a;
  --c-muted:#64748b;
  --c-bg:#ffffff;
  --c-bg-soft:#f8fafc;
  --c-border:#e2e8f0;
  --radius:14px;
  --container:1120px;
  --grad:linear-gradient(135deg,#1e88e5 0%,#42a5f5 100%);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 2px 8px rgba(15,23,42,.05);
  --shadow-md:0 10px 30px rgba(15,23,42,.10);
}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--c-ink);background:var(--c-bg);
  line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--c-primary-dark);text-decoration:none}
h1,h2,h3{margin:0 0 .4em;line-height:1.2;letter-spacing:-.02em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* --- Скип-ссылка для доступности --- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--c-ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0}

/* --- Контейнер --- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* --- Кнопки --- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:16px;line-height:1;padding:13px 22px;border-radius:10px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease,box-shadow .12s ease,background .12s ease;
  white-space:nowrap;text-align:center;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(30, 136, 229,.35)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(30, 136, 229,.45)}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-border)}
.btn-ghost:hover{background:var(--c-bg-soft)}
.btn-lg{padding:16px 30px;font-size:18px}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(30, 136, 229,.5);outline-offset:2px}

/* --- Шапка --- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--c-border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;color:var(--c-ink);letter-spacing:-.02em}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--grad);flex:none;display:inline-flex;align-items:center;justify-content:center}
.nav{display:flex;align-items:center;gap:26px}
.nav a{color:var(--c-muted);font-weight:500;font-size:15px;transition:color .12s ease}
.nav a:hover{color:var(--c-ink)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;padding:9px 11px}

/* Мобильное меню */
.mobile-menu{border-bottom:1px solid var(--c-border);background:#fff}
.mobile-menu[hidden]{display:none}
.mobile-menu .container{display:flex;flex-direction:column;gap:6px;padding-top:12px;padding-bottom:16px}
.mobile-menu a:not(.btn){padding:10px 4px;color:var(--c-ink);font-weight:500;border-bottom:1px solid var(--c-border)}
.mobile-menu .btn{margin-top:6px}

/* --- Hero --- */
.hero{
  padding:64px 0 40px;
  background:
    radial-gradient(1100px 500px at 80% -10%,rgba(66, 165, 245,.12),transparent 60%),
    radial-gradient(900px 500px at 0% 0%,rgba(30, 136, 229,.10),transparent 55%);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.08;letter-spacing:-.025em;margin:0 0 18px;font-weight:800}
.hero h1 .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(17px,2.2vw,20px);color:var(--c-muted);margin:0 0 28px;max-width:34ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero-note{font-size:14px;color:var(--c-muted);margin:16px 0 0}
.hero-media img{
  width:100%;border-radius:18px;box-shadow:var(--shadow-md);
  border:1px solid var(--c-border);background:#fff;
}

/* --- Живой счётчик созданных досок --- */
.counter-band{padding:32px 0;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);background:var(--c-bg-soft);text-align:center;opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.counter-band.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.counter-band{transition:none}}
.counter-value{margin:0;font-size:clamp(40px,7vw,64px);font-weight:800;line-height:1;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.counter-label{margin:8px 0 0;color:var(--c-muted);font-size:17px}

/* --- Секции --- */
.section{padding:72px 0}
.section-soft{background:var(--c-bg-soft)}
.section-head{max-width:680px;margin:0 auto 44px;text-align:center}
.section-head h2{font-size:clamp(26px,3.6vw,38px);font-weight:800}
.section-head p{color:var(--c-muted);font-size:18px;margin:0}
.eyebrow{display:inline-block;font-weight:700;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-primary);margin-bottom:10px}

/* --- Шаги --- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:10px;background:var(--grad);color:#fff;font-weight:800;font-size:18px;margin-bottom:14px;
}
.step h3{font-size:19px}
.step p{color:var(--c-muted);margin:0;font-size:15.5px}

/* --- Сетка возможностей --- */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.feature-icon{
  display:inline-flex;align-items:center;justify-content:center;width:50px;height:50px;
  border-radius:12px;background:rgba(30, 136, 229,.10);color:var(--c-primary-dark);margin-bottom:16px;
}
.feature-card h3{font-size:20px}
.feature-card p{color:var(--c-muted);margin:0}

/* --- Сплит-секции (текст + медиа) --- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split-media img{width:100%;border-radius:18px;box-shadow:var(--shadow-md);border:1px solid var(--c-border);background:#fff}
.split-copy h2{font-size:clamp(24px,3.2vw,34px);font-weight:800}
.split-copy>p{color:var(--c-muted);font-size:18px}

.checklist{display:grid;gap:12px;margin:0 0 28px}
.checklist li{position:relative;padding-left:34px;color:var(--c-ink);font-size:16.5px}
.checklist li::before{
  content:"";position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:50%;
  background:rgba(30, 136, 229,.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231565c0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 12px 12px no-repeat;
}

/* --- Отзывы --- */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:48px}
.review-card{background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.review-text{font-size:16.5px;margin:0 0 20px}
.review-author{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--c-muted)}
.review-author strong{color:var(--c-ink)}
.avatar{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;flex:none;
  border-radius:50%;background:var(--grad);color:#fff;font-weight:700;font-size:15px;
}

/* --- Показатели --- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;text-align:center}
.stats li{background:var(--c-bg-soft);border:1px solid var(--c-border);border-radius:var(--radius);padding:26px}
.stats strong{display:block;font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{color:var(--c-muted);font-size:15px}

/* --- Цены --- */
.pricing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,360px));gap:24px;justify-content:center}
.price-card{
  position:relative;background:var(--c-bg);border:1px solid var(--c-border);border-radius:18px;
  padding:30px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
}
.price-card--featured{border-color:var(--c-primary);box-shadow:var(--shadow-md)}
.price-badge{
  position:absolute;top:-12px;right:22px;background:var(--grad);color:#fff;
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;letter-spacing:.04em;
}
.price-card h3{font-size:22px}
.price{margin:6px 0 18px}
.price strong{font-size:40px;font-weight:800;display:inline-block;margin-right:6px}
.price span{color:var(--c-muted);font-size:15px}
.price-feat{display:grid;gap:10px;margin:0 0 24px;flex:1}
.price-feat li{position:relative;padding-left:26px;font-size:15.5px}
.price-feat li::before{content:"✓";position:absolute;left:0;color:var(--c-primary-dark);font-weight:800}
.price-card .btn{width:100%}

/* --- Финальный CTA --- */
.cta-final{
  margin:0;padding:80px 0;text-align:center;color:#fff;
  background:var(--grad);
}
.cta-final h2{font-size:clamp(28px,4vw,42px);font-weight:800;color:#fff}
.cta-final p{font-size:19px;max-width:46ch;margin:0 auto 28px;color:rgba(255,255,255,.92)}
.cta-final-btn{background:#fff;color:var(--c-primary-dark);box-shadow:0 10px 30px rgba(0,0,0,.18)}
.cta-final-btn:hover{transform:translateY(-1px);box-shadow:0 14px 36px rgba(0,0,0,.24)}

/* --- Footer --- */
.site-footer{background:#0b1020;color:#cbd5e1;padding:56px 0 28px}
.site-footer .logo{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand p{color:#94a3b8;margin:14px 0 0;max-width:30ch;font-size:15px}
.footer-col h3{font-size:15px;color:#fff;margin:0 0 14px;text-transform:uppercase;letter-spacing:.06em}
.footer-col a{display:block;color:#cbd5e1;padding:6px 0;font-size:15px;transition:color .12s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);margin-top:36px;padding-top:24px}
.footer-bottom p{margin:0;color:#94a3b8;font-size:14px}

/* ==========================================================================
   Адаптив
   ========================================================================== */
@media(max-width:960px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}

@media(max-width:860px){
  .nav,.header-actions .btn-login{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero{padding:40px 0 24px}
  .hero-sub{max-width:none}
  .split{grid-template-columns:1fr;gap:28px}
  .split-reverse .split-copy{order:2}
  .split-reverse .split-media{order:1}
  .section{padding:54px 0}
}

@media(max-width:560px){
  body{font-size:16px}
  .steps{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
  .cta-final{padding:60px 0}
}
