/* =====================================================
   EduGO.PRO — исправленная версия шапки и адаптива
   ===================================================== */

:root{
  --bg:#f6f8fd;
  --card:#ffffff;
  --text:#263246;
  --muted:#69758a;
  --line:#e2e8f3;
  --primary:#5574f7;
  --primary2:#8aa2ff;
  --soft:#edf3ff;
  --graphite:#49566b;
  --shadow:0 18px 55px rgba(68,82,110,.12);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  font-family:Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at 10% 0%, rgba(85,116,247,.18), transparent 30%),
    radial-gradient(circle at 90% 8%, rgba(138,162,255,.20), transparent 28%),
    var(--bg);
  color:var(--text);
  line-height:1.55;
  overflow-x:hidden;
}

body.no-scroll{
  overflow:hidden;
}

a{
  text-decoration:none;
  color:inherit;
}

button,input,textarea{
  font:inherit;
}

.container{
  width:min(1160px, calc(100% - 40px));
  margin:0 auto;
}

/* ===================== HEADER ===================== */

.header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}

.header__inner{
  height:82px;
  display:flex;
  align-items:center;
  gap:28px;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}

.brand__icon{
  width:54px;
  height:54px;
  border-radius:18px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-weight:900;
  font-size:28px;
  box-shadow:0 16px 30px rgba(85,116,247,.24);
}

.brand__text{
  font-size:31px;
  font-weight:900;
  letter-spacing:-.06em;
  color:var(--text);
  white-space:nowrap;
}

.brand__text span{
  color:var(--primary);
}

.nav{
  display:flex;
  gap:34px;
  align-items:center;
  margin-left:auto;
  font-weight:800;
  color:var(--graphite);
}

.nav a:hover{
  color:var(--primary);
}

.header__btn{
  padding:15px 26px;
  border-radius:999px;
  background:var(--graphite);
  color:#fff;
  font-weight:900;
  white-space:nowrap;
  transition:.2s;
}

.header__btn:hover{
  background:var(--primary);
  transform:translateY(-2px);
}

/* ВАЖНО: на ПК burger полностью скрыт */
.burger{
  display:none !important;
  appearance:none;
  -webkit-appearance:none;
  border:0;
  background:transparent;
  padding:0;
  margin:0;
}

.mobile-nav{
  display:none;
}

/* ===================== COMMON ===================== */

.section{
  padding:52px 0;
}

.label,
.section-title span{
  display:inline-flex;
  padding:8px 14px;
  border-radius:999px;
  background:var(--soft);
  color:var(--primary);
  font-size:13px;
  font-weight:900;
  margin-bottom:16px;
}

.section-title{
  text-align:center;
  max-width:700px;
  margin:0 auto 32px;
}

.section-title h2,
.about h2,
.contact h2{
  font-size:clamp(32px,4vw,50px);
  line-height:1.08;
  color:var(--text);
  letter-spacing:-.05em;
}

.section-title p,
.hero p,
.about p,
.contact p,
.course p{
  color:var(--muted);
}

/* ===================== HERO ===================== */

.hero{
  padding:58px 0 48px;
}

.hero__grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:34px;
  align-items:center;
}

.hero h1{
  font-size:clamp(42px,6.4vw,72px);
  line-height:.98;
  letter-spacing:-.075em;
  margin-bottom:20px;
}

.hero p{
  max-width:620px;
  font-size:18px;
  margin-bottom:26px;
}

.hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:14px 22px;
  border-radius:16px;
  font-weight:900;
  transition:.2s;
}

.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#fff;
  box-shadow:0 16px 36px rgba(85,116,247,.25);
}

.btn-light{
  background:#fff;
  border:1px solid var(--line);
  color:var(--graphite);
}

.btn:hover{
  transform:translateY(-2px);
}

.hero__card{
  display:grid;
  gap:16px;
}

.hero__item{
  background:rgba(255,255,255,.9);
  border:1px solid var(--line);
  border-radius:28px;
  padding:24px;
  box-shadow:var(--shadow);
}

.hero__item span{
  color:var(--primary);
  font-weight:900;
}

.hero__item b{
  display:block;
  font-size:24px;
  margin:8px 0 4px;
}

/* ===================== COURSES ===================== */

.courses{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}

.course{
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:28px;
  padding:24px;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  min-height:285px;
}

.course--main{
  background:linear-gradient(180deg,#fff,#edf3ff);
}

.course small{
  color:var(--primary);
  font-weight:900;
  margin-bottom:14px;
}

.course h3{
  font-size:25px;
  line-height:1.1;
  margin-bottom:10px;
}

.course strong{
  display:block;
  margin-top:auto;
  padding:20px 0 14px;
  font-size:28px;
}

.course button{
  border:0;
  border-radius:16px;
  padding:15px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#fff;
  font-weight:900;
  cursor:pointer;
}

/* ===================== ABOUT ===================== */

.section-soft{
  padding-top:42px;
}

.about{
  background:rgba(255,255,255,.9);
  border:1px solid var(--line);
  border-radius:34px;
  padding:34px;
  box-shadow:var(--shadow);
}

.about__grid{
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}

.about__grid div{
  background:#f9fbff;
  border:1px solid var(--line);
  border-radius:22px;
  padding:22px;
}

.about__grid b{
  display:block;
  margin-bottom:8px;
}

/* ===================== CONTACT ===================== */

.contact{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:28px;
  align-items:start;
  background:linear-gradient(135deg,#fff,#edf3ff);
  border:1px solid var(--line);
  border-radius:34px;
  padding:34px;
  box-shadow:var(--shadow);
}

.form{
  display:grid;
  gap:14px;
}

.form input,
.form textarea{
  width:100%;
  border:1px solid var(--line);
  background:#fff;
  border-radius:16px;
  padding:16px;
  outline:none;
}

.form textarea{
  min-height:120px;
  resize:vertical;
}

.form button{
  border:0;
  border-radius:16px;
  padding:16px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#fff;
  font-weight:900;
  cursor:pointer;
}

/* ===================== FOOTER ===================== */

.footer{
  padding:34px 0;
  background:#fff;
  border-top:1px solid var(--line);
}

.footer__grid{
  display:grid;
  grid-template-columns:1.1fr .9fr 1fr;
  gap:26px;
}

.footer__brand{
  margin-bottom:12px;
}

.footer__links{
  display:grid;
  gap:10px;
  font-weight:800;
  color:var(--graphite);
}

.footer__links a:hover{
  color:var(--primary);
}

.footer__info p,
.footer p{
  color:var(--muted);
}

.socials{
  display:flex;
  gap:10px;
  margin-top:14px;
}

.socials a{
  width:46px;
  height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:16px;
  background:var(--soft);
  color:var(--primary);
  font-weight:900;
}

/* ===================== MODALS ===================== */

.modal{
  position:fixed;
  inset:0;
  z-index:1500;
  display:none;
  align-items:center;
  justify-content:center;
  padding:18px;
  background:rgba(73,86,107,.48);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}

.modal.is-open{
  display:flex;
}

.modal__box{
  width:min(560px,100%);
  max-height:90vh;
  overflow:auto;
  position:relative;
  background:#fff;
  border-radius:30px;
  padding:34px;
  box-shadow:0 30px 80px rgba(73,86,107,.24);
}

.modal__close{
  position:absolute;
  top:16px;
  right:16px;
  width:42px;
  height:42px;
  border:1px solid var(--line);
  background:#f7f9ff;
  border-radius:14px;
  font-size:30px;
  line-height:1;
  cursor:pointer;
}

.modal h3{
  font-size:34px;
  margin:6px 52px 16px 0;
}

.modal p{
  color:var(--muted);
  margin-bottom:22px;
}

/* ===================== LEGAL ===================== */

.legal{
  padding:50px 0;
}

.legal__box{
  background:#fff;
  border:1px solid var(--line);
  border-radius:30px;
  padding:34px;
  box-shadow:var(--shadow);
}

.legal h1{
  font-size:42px;
  margin-bottom:18px;
}

/* ===================== ADAPTIVE ===================== */

@media(max-width:1050px){
  .nav{
    gap:20px;
  }

  .header__btn{
    padding:14px 20px;
  }

  .courses{
    grid-template-columns:repeat(2,1fr);
  }

  .about__grid{
    grid-template-columns:repeat(2,1fr);
  }
}

@media(max-width:820px){
  .container{
    width:calc(100% - 28px);
  }

  .header__inner{
    height:68px;
    justify-content:center;
    position:relative;
  }

  .brand__icon{
    width:46px;
    height:46px;
    border-radius:16px;
    font-size:24px;
  }

  .brand__text{
    font-size:25px;
  }

  .nav,
  .header__btn{
    display:none;
  }

  /* ВАЖНО: на мобильном burger включается и становится слева */
  .burger{
    display:flex !important;
    position:absolute;
    left:0;
    top:12px;
    width:44px;
    height:44px;
    border:1px solid var(--line);
    background:#fff;
    border-radius:14px;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
    cursor:pointer;
    box-shadow:0 10px 24px rgba(68,82,110,.08);
  }

  .burger span{
    display:block;
    width:20px;
    height:2px;
    border-radius:10px;
    background:var(--graphite);
  }

  .mobile-nav{
    position:absolute;
    top:76px;
    left:14px;
    right:14px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    border-radius:22px;
    padding:10px;
    box-shadow:var(--shadow);
  }

  .mobile-nav.is-open{
    display:grid;
    gap:6px;
  }

  .mobile-nav a{
    padding:14px;
    border-radius:14px;
    font-weight:900;
    color:var(--graphite);
  }

  .mobile-nav a:hover{
    background:var(--soft);
  }

  .section{
    padding:36px 0;
  }

  .hero{
    padding:38px 0 34px;
  }

  .hero__grid,
  .contact,
  .footer__grid{
    grid-template-columns:1fr;
  }

  .hero h1{
    font-size:40px;
  }
}

@media(max-width:560px){
  .container{
    width:calc(100% - 24px);
  }

  .brand__text{
    font-size:23px;
  }

  .hero h1{
    font-size:35px;
  }

  .hero__actions{
    display:grid;
  }

  .btn{
    width:100%;
  }

  .courses,
  .about__grid{
    grid-template-columns:1fr;
  }

  .course{
    min-height:auto;
  }

  .contact,
  .about{
    padding:24px;
    border-radius:26px;
  }

  .modal__box{
    padding:28px 22px;
  }
}

  /* ===== БЛОК КУРСОВ С КАРТИНКАМИ ===== */

  .image-courses-section {
    padding: 42px 0;
  }

  .image-courses-title {
    max-width: 760px;
    margin: 0 auto 30px;
    text-align: center;
  }

  .image-courses-title span {
    display: inline-flex;
    padding: 8px 14px;
    border-radius: 999px;
    background: #edf3ff;
    color: #5574f7;
    font-size: 13px;
    font-weight: 900;
    margin-bottom: 16px;
  }

  .image-courses-title h2 {
    font-size: clamp(32px, 4vw, 50px);
    line-height: 1.08;
    letter-spacing: -0.05em;
    color: #273246;
    margin: 0 0 12px;
  }

  .image-courses-title p {
    color: #6d788d;
    margin: 0;
  }

  .image-courses-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .image-course-card {
    background: rgba(255,255,255,.96);
    border: 1px solid #e2e8f3;
    border-radius: 30px;
    padding: 16px;
    box-shadow: 0 18px 55px rgba(68,82,110,.12);
    overflow: hidden;
  }

  .image-course-picture {
    display: block;
    border-radius: 22px;
    overflow: hidden;
    background: #f3f6fc;
    border: 1px solid #e2e8f3;
  }

  .image-course-picture img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: 0.25s ease;
  }

  .image-course-picture:hover img {
    transform: scale(1.015);
  }

  .image-course-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 4px 2px;
  }

  .image-course-name {
    color: #4f5e75;
    font-size: 16px;
    font-weight: 900;
    margin-bottom: 4px;
  }

  .image-course-price {
    color: #273246;
    font-size: 30px;
    line-height: 1;
    font-weight: 900;
    letter-spacing: -0.03em;
  }

  .image-course-button {
    flex: 0 0 auto;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 48px;
    padding: 14px 22px;
    border-radius: 16px;
    background: linear-gradient(135deg, #5574f7, #8aa2ff);
    color: #fff;
    font-weight: 900;
    text-decoration: none;
    box-shadow: 0 14px 30px rgba(85,116,247,.22);
    transition: 0.2s ease;
  }

  .image-course-button:hover {
    transform: translateY(-2px);
  }

  @media (max-width: 860px) {
    .image-courses-section {
      padding: 34px 0;
    }

    .image-courses-grid {
      grid-template-columns: 1fr;
      gap: 18px;
    }

    .image-course-card {
      padding: 14px;
    }
  }

  @media (max-width: 560px) {
    .image-courses-section {
      padding: 28px 0;
    }

    .image-course-bottom {
      display: grid;
      gap: 14px;
    }

    .image-course-button {
      width: 100%;
    }

    .image-course-price {
      font-size: 28px;
    }
  }