/* === Сброс и базовые стили === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Rubik', sans-serif;
  font-size: 16px;
  background-color: #f9f9fb;
  color: #222;
  line-height: 1.6;
}

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

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* === Хедер === */
.header {
  background: #ffffff;
  border-bottom: 1px solid #eaeaea;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.header__logo {
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  font-weight: 600;
  color: #0066cc;
}

.nav__list {
  display: flex;
  gap: 1.5rem;
}

.nav__list a {
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav__list a:hover {
  color: #0066cc;
}

/* === Футер === */
.footer {
  background: #111;
  color: #f0f0f0;
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer__logo {
  font-family: 'Fira Code', monospace;
  font-size: 1.3rem;
  font-weight: 600;
  color: #00b3a4;
}

.footer__nav li,
.footer__legal li,
.footer__contacts li {
  margin-bottom: 0.5rem;
}

.footer__nav a,
.footer__legal a {
  color: #ddd;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

.footer__nav a:hover,
.footer__legal a:hover {
  color: #00b3a4;
}

/* === Кнопки (BEM) === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .875rem 1.1rem;
  border-radius: 12px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
  will-change: transform;
}
.btn i { width: 18px; height: 18px; }
.btn:active { transform: translateY(1px) scale(.99); }

.btn--primary {
  background: linear-gradient(135deg,#0066cc,#00b3a4);
  color: #fff;
  box-shadow: 0 8px 24px rgba(0,102,204,.22);
}
.btn--primary:hover { box-shadow: 0 10px 28px rgba(0,102,204,.28); }

.btn--ghost {
  background: transparent;
  border-color: #cdd6e0;
  color: #0b1b2b;
}
.btn--ghost:hover {
  border-color: #00b3a4;
  color: #0066cc;
}

/* === HERO === */
.hero {
  position: relative;
  overflow: clip;
  padding: clamp(3rem, 5vw, 5rem) 0;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: -20% -10% -10% -10%;
  background:
    radial-gradient(40% 40% at 20% 30%, rgba(0,179,164,.25), transparent 60%),
    radial-gradient(45% 45% at 80% 20%, rgba(0,102,204,.25), transparent 60%),
    radial-gradient(50% 50% at 60% 80%, rgba(255,179,0,.18), transparent 60%);
  filter: blur(40px);
  z-index: -1;
  animation: heroFloat 12s ease-in-out infinite alternate;
}
@keyframes heroFloat {
  0% { transform: translateY(-10px) scale(1); }
  100% { transform: translateY(10px) scale(1.03); }
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.hero__content { max-width: 680px; }
.hero__title {
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: #0b1b2b;
}
.hero__subtitle {
  margin-top: 1rem;
  color: #324355;
  font-size: clamp(1.05rem, 2.4vw, 1.2rem);
}

.hero__cta {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.hero__bullets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: .75rem;
  margin-top: 1.25rem;
}
.hero__bullet {
  display: flex; align-items: center; gap: .5rem;
  background: #ffffffaa;
  border: 1px solid #e9edf3;
  border-radius: 12px;
  padding: .6rem .75rem;
  backdrop-filter: blur(4px);
  font-size: .95rem;
}
.hero__bullet i { width: 18px; height: 18px; color: #0066cc; }

.hero__visual {
  position: relative;
  display: grid;
  place-items: center;
}
.hero__image {
  width: min(520px, 90%);
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid #e8eef6;
  box-shadow: 0 24px 60px rgba(11,27,43,.12);
  transform: translateZ(0);
  transition: transform .3s ease;
}
.hero__image:hover { transform: translateY(-4px); }

.hero__chips {
  position: absolute;
  bottom: -10px;
  display: flex; gap: .5rem; flex-wrap: wrap;
}
.chip {
  display: inline-flex; align-items: center; gap: .4rem;
  background:#0b1b2b; color:#fff;
  padding:.5rem .7rem; border-radius: 999px;
  font-size:.85rem; box-shadow:0 10px 28px rgba(11,27,43,.22);
}
.chip i { width: 16px; height: 16px; }

/* Адаптив */
@media (min-width: 920px) {
  .hero__container {
    grid-template-columns: 1.05fr .95fr;
    gap: 3rem;
  }
  .hero { padding: 5.5rem 0 6rem; }
}

/* Перевага доступності */
@media (prefers-reduced-motion: reduce) {
  .hero__bg { animation: none; }
}

/* === COURSES === */
.courses { padding: 3rem 0; }
.courses__head { margin-bottom: 1.25rem; }
.courses__title {
  font-size: clamp(1.6rem, 4.8vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #0b1b2b;
}
.courses__lead { color:#324355; max-width: 720px; margin-top:.4rem; }

.courses__tabs {
  display:flex; gap:.6rem; flex-wrap:wrap;
  margin:1rem 0 1.2rem;
}
.courses__tab {
  display:inline-flex; align-items:center; gap:.45rem;
  padding:.55rem .8rem; border-radius:999px;
  background:#fff; border:1px solid #dbe3ec; color:#0b1b2b;
  font-weight:600; font-size:.95rem;
  transition: background .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease;
}
.courses__tab i { width:18px; height:18px; }
.courses__tab:hover { border-color:#00b3a4; }
.courses__tab--active {
  background: linear-gradient(135deg,#0066cc1a,#00b3a41a);
  border-color:#00b3a4; color:#0b1b2b;
  box-shadow: 0 6px 18px rgba(0,179,164,.15);
}

.courses__panels { margin-top:.5rem; }
.courses__panel[hidden] { display:none; }

.courses__grid {
  display:grid;
  grid-template-columns: 1fr;
  gap:1rem;
}

.course-card {
  display:grid;
  grid-template-columns: 1fr;
  background:#fff; border:1px solid #e8eef6; border-radius:16px;
  overflow:hidden;
  transition: transform .2s ease, box-shadow .25s ease, border-color .25s ease;
}
.course-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 48px rgba(11,27,43,.12);
  border-color:#d7e3f2;
}
.course-card--highlight { border-color:#00b3a4; box-shadow: 0 16px 44px rgba(0,179,164,.18); }

.course-card__image {
  width:100%; aspect-ratio: 16/9; object-fit:cover;
  background:#f2f6fb;
}
.course-card__body { padding:1rem; }
.course-card__title { font-size:1.15rem; font-weight:700; color:#0b1b2b; }
.course-card__meta { display:flex; flex-wrap:wrap; gap:.8rem 1rem; margin:.5rem 0 .6rem; color:#41576b; font-size:.95rem; }
.course-card__meta i { width:16px; height:16px; }
.course-card__desc { color:#324355; margin-bottom:.7rem; }
.course-card__tags { display:flex; flex-wrap:wrap; gap:.4rem; margin-bottom:.6rem; }
.tag {
  display:inline-block; padding:.25rem .55rem; border-radius:999px;
  background:#0b1b2b; color:#fff; font-size:.8rem;
}
.course-card__cta { margin-top:.25rem; }

@media (min-width: 760px) {
  .courses__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1120px) {
  .courses__grid { grid-template-columns: repeat(3, 1fr); }
}

/* Невеликі мікроанімації при появі */
.course-card { opacity:0; transform: translateY(6px); }
.course-card.is-inview { opacity:1; transform:translateY(0); transition: opacity .5s ease, transform .5s ease; }

/* === TEACHERS === */
.teachers { padding: 3rem 0; }
.teachers__head { margin-bottom: 1.25rem; }
.teachers__title {
  font-size: clamp(1.6rem, 4.8vw, 2.2rem);
  font-weight: 700; letter-spacing: -0.01em; color:#0b1b2b;
}
.teachers__lead { color:#324355; max-width: 760px; margin-top:.4rem; }

.teachers__grid {
  display:grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 760px) { .teachers__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1120px) { .teachers__grid { grid-template-columns: repeat(4, 1fr); } }

.teacher-card {
  background:#fff; border:1px solid #e8eef6; border-radius:16px; overflow:hidden;
  display:flex; flex-direction:column;
  transition: transform .2s ease, box-shadow .25s ease, border-color .25s ease;
}
.teacher-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 48px rgba(11,27,43,.12);
  border-color:#d7e3f2;
}
.teacher-card__media { position:relative; }
.teacher-card__image { width:100%; aspect-ratio: 4/3; object-fit:cover; background:#f2f6fb; }
.teacher-card__badge {
  position:absolute; left:.7rem; bottom:.7rem;
  display:inline-flex; align-items:center; gap:.35rem;
  background:#0b1b2b; color:#fff; padding:.35rem .6rem; border-radius:999px; font-size:.8rem;
  box-shadow:0 10px 26px rgba(11,27,43,.22);
}
.teacher-card__badge i { width:16px; height:16px; }

.teacher-card__body { padding: 1rem; display:flex; flex-direction:column; gap:.5rem; }
.teacher-card__name { font-weight:700; font-size:1.05rem; color:#0b1b2b; }
.teacher-card__role { color:#41576b; font-size:.95rem; }
.teacher-card__tags { display:flex; flex-wrap:wrap; gap:.4rem; }
.teacher-card__actions { display:flex; align-items:center; justify-content:space-between; gap:.6rem; margin-top:.5rem; }

.teacher-card__links { display:flex; gap:.4rem; }
.teacher-card__link {
  width:40px; height:40px; display:grid; place-items:center;
  border:1px solid #dbe3ec; border-radius:12px; background:#fff;
  transition: border-color .2s ease, transform .15s ease;
}
.teacher-card__link i { width:18px; height:18px; color:#0066cc; }
.teacher-card__link:hover { border-color:#00b3a4; transform: translateY(-1px); }

/* Плавна поява карток при прокрутке */
.teacher-card { opacity:0; transform: translateY(6px); }
.teacher-card.is-inview { opacity:1; transform:translateY(0); transition: opacity .5s ease, transform .5s ease; }

/* === FORMAT === */
.format { padding: 3rem 0; }
.format__head { margin-bottom: 1.25rem; }
.format__title {
  font-size: clamp(1.6rem, 4.8vw, 2.2rem);
  font-weight: 700; letter-spacing: -0.01em; color:#0b1b2b;
}
.format__lead { color:#324355; max-width: 760px; margin-top:.4rem; }

.format__timeline {
  counter-reset: step;
  display: grid;
  gap: 1rem;
}

.format-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: .9rem;
  align-items: start;
  background:#fff;
  border:1px solid #e8eef6;
  border-radius: 16px;
  padding: .9rem;
  position: relative;
  transition: transform .2s ease, box-shadow .25s ease, border-color .25s ease;
}
.format-step:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 48px rgba(11,27,43,.12);
  border-color:#d7e3f2;
}

.format-step__icon {
  width: 48px; height: 48px; border-radius: 14px;
  display:grid; place-items:center;
  background: linear-gradient(135deg,#0066cc1a,#00b3a41a);
  border: 1px solid #dbe3ec;
  position: relative;
}
.format-step__icon i { width: 22px; height: 22px; color:#0066cc; }

.format-step__body { display:flex; flex-direction:column; gap:.4rem; }
.format-step__title { font-weight:700; color:#0b1b2b; font-size:1.05rem; }
.format-step__text { color:#324355; }
.format-step__cta { align-self:flex-start; margin-top:.2rem; }

@media (min-width: 860px) {
  .format__timeline { gap: 1.2rem; }
  .format-step { padding: 1.1rem 1.1rem 1.1rem 1rem; }
}

/* Плавна поява елементів при прокрутке */
.format-step { opacity:0; transform: translateY(6px); }
.format-step.is-inview { opacity:1; transform:translateY(0); transition: opacity .5s ease, transform .5s ease; }

/* === FAQ === */
.faq { padding: 3rem 0; }
.faq__head { margin-bottom: 1.25rem; }
.faq__title {
  font-size: clamp(1.6rem, 4.8vw, 2.2rem);
  font-weight: 700; letter-spacing: -0.01em; color:#0b1b2b;
}
.faq__lead { color:#324355; max-width: 760px; margin-top:.4rem; }

.faq__list { display:grid; gap:.8rem; }
.faq-item {
  background:#fff; border:1px solid #e8eef6; border-radius:16px; overflow:hidden;
  transition: transform .2s ease, box-shadow .25s ease, border-color .25s ease;
}
.faq-item:hover { transform: translateY(-2px); box-shadow: 0 18px 48px rgba(11,27,43,.12); border-color:#d7e3f2; }

.faq-item__title { }
.faq-item__button {
  width:100%; text-align:left; padding:1rem 1rem;
  background:#fff; border:0; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:.8rem;
  font-weight:700; color:#0b1b2b; font-size:1.05rem;
}
.faq-item__button i { width:20px; height:20px; transition: transform .2s ease; }
.faq-item__button[aria-expanded="true"] i { transform: rotate(180deg); }

.faq-item__panel {
  padding: 0 1rem 1rem;
  color:#324355;
  border-top:1px solid #eef3f9;
}

.faq-item__cta { margin-top:.6rem; }

/* Анімація розкриття (height auto → через max-height) */
.faq-item__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height .28s ease, opacity .2s ease;
  opacity: 0;
}
.faq-item__panel.is-open {
  opacity: 1;
  max-height: 260px; /* достатньо для типового контенту */
}

/* Плавна поява елементів при прокрутке */
.faq-item { opacity:0; transform: translateY(6px); }
.faq-item.is-inview { opacity:1; transform:translateY(0); transition: opacity .5s ease, transform .5s ease; }

/* === CONTACT === */
.contact { padding: 3rem 0; scroll-margin-top: 84px; }
.contact__head { margin-bottom: 1.25rem; }
.contact__title {
  font-size: clamp(1.6rem, 4.8vw, 2.2rem);
  font-weight: 700; letter-spacing: -0.01em; color:#0b1b2b;
}
.contact__lead { color:#324355; max-width: 760px; margin-top:.4rem; }

/* Форма */
.form {
  background:#fff; border:1px solid #e8eef6; border-radius:16px;
  padding:1rem; box-shadow: 0 8px 28px rgba(11,27,43,.06);
}
.form__grid {
  display:grid; gap:1rem; grid-template-columns:1fr;
}
@media (min-width: 760px) {
  .form__grid { grid-template-columns: repeat(2, 1fr); }
  .form__field--captcha { grid-column: span 2; }
}

.form__field { display:flex; flex-direction:column; gap:.4rem; }
.form__label { font-weight:600; color:#0b1b2b; }
.form__input {
  border:1px solid #dbe3ec; border-radius:12px; padding:.75rem .9rem; background:#fff;
  outline: none; transition: border-color .2s ease, box-shadow .2s ease;
}
.form__input:focus {
  border-color:#00b3a4; box-shadow: 0 0 0 3px rgba(0,179,164,.15);
}
.form__input--invalid { border-color:#d33; box-shadow: 0 0 0 3px rgba(211,51,51,.12); }

.form__error { color:#b42318; font-size:.9rem; }
.form__error[hidden] { display:none; }

.form__check {
  display:flex; align-items:center; gap:.6rem; margin-top:.8rem; cursor:pointer; user-select:none;
}
.form__check input { position:absolute; opacity:0; pointer-events:none; }
.form__check-box {
  width:20px; height:20px; border-radius:6px; border:1px solid #dbe3ec; background:#fff;
  display:inline-block; position:relative; transition: border-color .2s ease, background .2s ease;
}
.form__check input:checked + .form__check-box {
  background: linear-gradient(135deg,#0066cc,#00b3a4);
  border-color:#00b3a4;
}
.form__check input:checked + .form__check-box::after {
  content:""; position:absolute; inset:4px 6px 6px 4px; border:2px solid #fff; border-top:0; border-left:0; transform: rotate(45deg);
}
.form__check-text { color:#324355; }

.form__actions { display:flex; gap:.6rem; margin-top:1rem; flex-wrap:wrap; }

/* Notice */
.form__notice {
  margin-bottom:.8rem; padding:.75rem .9rem; border-radius:12px; font-weight:600;
  border:1px solid #dbe3ec; background:#f8fbff; color:#0b1b2b;
}
.form__notice--ok {
  border-color:#00b3a4; background:#f2fffd; color:#0b2b27;
}
.form__notice--err {
  border-color:#d33; background:#fff6f6; color:#5b1b1b;
}

/* === COOKIE POPUP === */
.cookie {
  position: fixed;
  inset: auto 0 0 0; /* прилип до низа */
  padding: .75rem;
  z-index: 1200;
  pointer-events: none; /* кліки лише по внутрішній панелі */
}
.cookie__inner {
  pointer-events: auto;
  margin: 0 auto;
  width: min(980px, 96%);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: .8rem;
  background: #0b1b2b;
  color: #ffffff;
  border: 1px solid #0e2a44;
  border-radius: 14px;
  padding: .8rem .9rem;
  box-shadow: 0 14px 44px rgba(0,0,0,.3);
  transform: translateY(16px);
  opacity: 0;
  transition: transform .25s ease, opacity .25s ease;
}
.cookie[aria-hidden="false"] .cookie__inner,
.cookie:not([hidden]) .cookie__inner {
  transform: translateY(0);
  opacity: 1;
}
.cookie__icon i { width: 22px; height: 22px; color: #ffd166; }
.cookie__text a { color: #8fe9df; text-decoration: underline; }
.cookie__btn { white-space: nowrap; }

/* === POLICY PAGES (privacy.html, cookies.html, terms.html, return.html, disclaimer.html, personal-data-policy.html) === */
/* Під задану фіксовану структуру:
<main>
  <section class="pages">
    <div class="container">
      <h1>...</h1>
      <p>...</p>
      <h2>...</h2>
      <p>...</p>
      <ul>...</ul>
    </div>
  </section>
</main>
*/

.pages { padding: 2.5rem 0; background: #fff; }
.pages .container { max-width: 900px; }
.pages h1 {
  font-size: clamp(1.6rem, 4.8vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  color: #0b1b2b;
}
.pages h2 {
  font-size: clamp(1.25rem, 3.5vw, 1.5rem);
  margin: 1.2rem 0 .6rem;
  color: #0b1b2b;
}
.pages p {
  color: #324355;
  margin: .6rem 0;
}
.pages ul { margin: .6rem 0 .8rem 1.2rem; }
.pages li { color: #324355; margin: .3rem 0; }
.pages a { color: #0066cc; text-decoration: underline; }
.pages strong { color: #0b1b2b; font-weight: 700; }

/* Дрібні покращення читабельності */
.pages p + ul { margin-top: .2rem; }
.pages ul + p { margin-top: .6rem; }