/* ==========================================================================
   ChessMaster — редизайн лендінгу «21 критическая ошибка в шахматах»
   ========================================================================== */

@font-face{
  font-family:"Uni";
  src:url("../fonts/UniSansHeavy.eot");
  src:url("../fonts/UniSansHeavy.eot?#iefix") format("embedded-opentype"),
      url("../fonts/UniSansHeavy.woff") format("woff"),
      url("../fonts/UniSansHeavy.ttf") format("truetype");
  font-weight:normal;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"OpenSansRegular";
  src:url("../fonts/OpenSansRegular/OpenSansRegular.woff") format("woff"),
      url("../fonts/OpenSansRegular/OpenSansRegular.ttf") format("truetype");
  font-weight:normal;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"OpenSansSemiBold";
  src:url("../fonts/OpenSansSemiBold/OpenSansSemiBold.woff") format("woff"),
      url("../fonts/OpenSansSemiBold/OpenSansSemiBold.ttf") format("truetype");
  font-weight:normal;
  font-style:normal;
  font-display:swap;
}
@font-face{
  font-family:"OpenSansBold";
  src:url("../fonts/OpenSansBold/OpenSansBold.woff") format("woff"),
      url("../fonts/OpenSansBold/OpenSansBold.ttf") format("truetype");
  font-weight:normal;
  font-style:normal;
  font-display:swap;
}

:root{
  --navy:#2545a7;
  --navy-dark:#16224f;
  --navy-deep:#001964;
  --yellow:#e9eea2;
  --yellow-deep:#d8e07a;
  --bg-soft:#f5f6f9;
  --coral:#f95d51;
  --text:#1c2340;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --container:1140px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"OpenSansRegular",Arial,sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
h1,h2,h3{
  font-family:"Uni","OpenSansBold",Arial,sans-serif;
  text-transform:uppercase;
  margin:0;
  line-height:1.1;
  letter-spacing:.3px;
}
p{margin:0 0 12px;}
ul{margin:0;padding:0;}
li{list-style:none;}
button{font-family:inherit;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.cf::after{content:"";display:table;clear:both;}

/* ---------- header ---------- */
.site-header{
  background:var(--navy-dark);
  padding:16px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.site-header__logo img{height:34px;width:auto;}
.site-header__meta{
  display:flex;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
}
.trust-badge{
  font-size:14px;
  color:rgba(255,255,255,.75);
}
.trust-badge b{font-family:"OpenSansBold",Arial,sans-serif;font-weight:normal;color:#fff;}
.tg-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-family:"OpenSansSemiBold",Arial,sans-serif;
  text-decoration:none;
  color:var(--yellow);
  white-space:nowrap;
}
.tg-link svg{flex:none;}
.tg-link:hover{color:#fff;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background:var(--navy);
  padding:35px 0 72px;
  overflow:hidden;
}
.hero__eyebrow{
  text-align:center;
  color:var(--yellow);
  font-family:"OpenSansSemiBold",Arial,sans-serif;
  text-transform:uppercase;
  letter-spacing:1.5px;
  font-size:13px;
  margin-bottom:35px;
  opacity:.85;
}
.hero__grid{
  display:grid;
  grid-template-columns:340px 1fr;
  gap:40px;
  align-items:center;
}
.hero__book{
  text-align:center;
}
.hero__book img{
  max-width:260px;
  margin:0 auto;
  filter:drop-shadow(0 24px 40px rgba(0,0,0,.35));
}
.hero__reviews-link{
  display:inline-block;
  margin-top:18px;
  font-size:14px;
  color:var(--yellow);
  border-bottom:1px dashed rgba(233,238,162,.6);
  text-decoration:none;
}
.hero__reviews-link:hover{border-color:transparent;}

.signup-card{
  background:#fff;
  border-radius:var(--radius-lg);
  padding:40px;
  box-shadow:0 30px 60px rgba(9,16,58,.35);
}
.signup-card h1{
  font-size:34px;
  color:var(--navy-deep);
  margin-bottom:10px;
}
.signup-card__lead{
  font-family:"OpenSansSemiBold",Arial,sans-serif;
  font-size:17px;
  color:var(--text);
  margin-bottom:22px;
}
.bullet-list{
  display:flex;
  flex-direction:column;
  gap:16px;
  margin-bottom:28px;
}
.bullet-item{
  display:flex;
  align-items:center;
  gap:16px;
  font-family:"OpenSansSemiBold",Arial,sans-serif;
  font-size:16px;
  color:var(--text);
}
.bullet-icon{
  flex:none;
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:50%;
  background-color:var(--bg-soft);
  font-size:20px;
  line-height:1;
}

.signup-form{
  border-top:1px solid #eef0f6;
  padding-top:24px;
}
.signup-form__row{
  position:relative;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.email-input{
  flex:1 1 220px;
  height:56px;
  border-radius:999px;
  border:1px solid #d9dced;
  padding:0 20px 0 48px;
  font-size:16px;
  font-family:"OpenSansRegular",Arial,sans-serif;
  background:#f5f6f9 url("../images/arroba.png") no-repeat 18px center;
  background-size:18px 18px;
}
.email-input:focus{outline:none;border-color:var(--navy);background-color:#fff;}
.submit-input{
  flex:0 0 auto;
  height:56px;
  padding:0 32px;
  border:none;
  border-radius:999px;
  background:var(--yellow);
  color:var(--navy-deep);
  font-family:"OpenSansBold",Arial,sans-serif;
  font-size:15px;
  text-transform:uppercase;
  letter-spacing:.4px;
  cursor:pointer;
  box-shadow:0 12px 24px rgba(216,224,122,.5);
  transition:transform .2s ease,box-shadow .2s ease;
}
.submit-input:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(216,224,122,.65);}
.submit-input:focus{outline:none;}
.checkform{
  margin:14px 0 0;
  font-size:12px;
  color:#8b90a8;
  line-height:1.4;
}
.checkform a{color:var(--navy);text-decoration:underline;}
.checkform input{vertical-align:middle;margin-right:6px;}

/* ---------- stats ---------- */
.stats{
  background:var(--bg-soft);
  padding:64px 0;
}
.section-title{
  text-align:center;
  font-size:30px;
  color:var(--navy-deep);
  margin-bottom:36px;
}
.stats__grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.stat-card{
  background:#fff;
  border-radius:var(--radius-md);
  padding:32px 20px;
  text-align:center;
  box-shadow:0 16px 30px rgba(22,34,79,.06);
}
.stat-card__num{
  display:block;
  font-family:"Uni",Arial,sans-serif;
  font-size:48px;
  color:var(--navy);
  margin-bottom:8px;
}
.stat-card__text{
  font-size:15px;
  color:var(--text);
}

/* ---------- reviews ---------- */
.reviews{
  padding:64px 0;
}
.reviews__wrap{
  max-width:760px;
  margin:0 auto;
  border-radius:var(--radius-md);
  overflow:hidden;
  border:1px solid #eef0f6;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--navy-dark);
  padding:48px 0 28px;
}
.site-footer__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding-bottom:28px;
  margin-bottom:24px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.site-footer__logo img{height:30px;}
.footer-contacts{
  display:flex;
  gap:28px;
  flex-wrap:wrap;
}
.footer-contact{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  font-family:"OpenSansSemiBold",Arial,sans-serif;
  color:rgba(255,255,255,.85);
  text-decoration:none;
}
.footer-contact svg{flex:none;}
.footer-contact:hover{color:var(--yellow);}
.link-list{
  display:flex;
  justify-content:center;
  gap:32px;
  flex-wrap:wrap;
  margin-bottom:18px;
}
.link-item{
  font-size:13px;
  font-family:"OpenSansSemiBold",Arial,sans-serif;
  text-decoration:none;
  color:rgba(255,255,255,.7);
}
.link-item:hover{color:var(--yellow);}
.copyright{
  text-align:center;
  font-size:12px;
  color:rgba(255,255,255,.45);
  margin:0;
}

/* ---------- modals ---------- */
.modal{
  width:640px;
  height:520px;
  max-width:92vw;
  max-height:82vh;
  background:#fff;
  position:fixed;
  top:45%;
  left:50%;
  margin-left:calc(-1 * min(320px,46vw));
  margin-top:calc(-1 * min(260px,41vh));
  display:none;
  opacity:0;
  z-index:20;
  border-radius:var(--radius-md);
  box-shadow:0 30px 60px rgba(9,16,58,.35);
  padding:28px 28px 20px;
}
.modal_close{
  width:32px;height:32px;
  position:absolute;
  top:12px;right:12px;
  cursor:pointer;
  border:none;
  background:#f5f6f9;
  border-radius:50%;
  font-size:16px;
  line-height:1;
  color:var(--navy-dark);
}
.modal h1{
  font-size:18px;
  text-transform:none;
  text-align:center;
  margin:8px 0 16px;
  color:var(--navy-deep);
}
.modal p,.modal li{
  font-size:14px;
  font-family:"OpenSansRegular",Arial,sans-serif;
  color:var(--text);
}
.modal-content{
  overflow-y:auto;
  height:calc(100% - 60px);
  box-sizing:border-box;
}
#overlay1{
  z-index:11;
  position:fixed;
  background-color:rgba(16,22,58,.55);
  width:100%;height:100%;
  top:0;left:0;
  cursor:pointer;
  display:none;
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero__grid{grid-template-columns:1fr;}
  .hero__book{order:1;}
  .hero__book img{max-width:180px;}
  .signup-card{order:2;padding:28px;}
  .stats__grid{grid-template-columns:1fr;}
  .site-footer__top{flex-direction:column;text-align:center;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .site-header .container{flex-direction:column;gap:10px;text-align:center;}
  .hero{padding:36px 0 52px;}
  .signup-card{padding:22px;}
  .signup-card h1{font-size:26px;}
  .signup-form__row{flex-direction:column;}
  .email-input,.submit-input{width:100%;flex:none;}
  .section-title{font-size:24px;}
  .footer-contacts{flex-direction:column;gap:12px;align-items:center;}
  .link-list{gap:16px;}
}