/* ============================================
   OWL HELPER — Основні стилі
   ============================================ */

/* ---------- CSS-змінні ---------- */
:root {
  --dark: #0d231e;
  --dark-light: #163830;
  --gold: #e1cfa4;
  --gold-dark: #8c6f34;
  --gold-hover: #f2dcae;
  --cream: #f5f1e8;
  --paper: #fffdf8;
  --white: #ffffff;
  --text-dark: #0d231e;
  --text-muted: #4b6558;
  --line: #dcded3;
  --shadow: rgba(13, 35, 30, 0.12);
  --shadow-light: rgba(13, 35, 30, 0.06);

  --font-heading: "Playfair Display", Georgia, serif;
  --font-body: "Montserrat", Arial, sans-serif;

  --header-height: 80px;
  --container-max: 1180px;
  --container-padding: 48px;
  --transition: 0.3s ease;
}

/* ---------- Скидання та базові стилі ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

svg {
  display: block;
}

ul {
  list-style: none;
}

::selection {
  background: var(--gold);
  color: var(--dark);
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

/* ---------- Контейнер ---------- */
.container {
  width: min(var(--container-max), calc(100% - var(--container-padding)));
  margin-inline: auto;
}

/* ---------- Skip-посилання ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--paper);
  border-radius: 6px;
  font-size: 14px;
}

.skip-link:focus {
  left: 10px;
}

/* ---------- Scroll-margin для секцій (точно від початку розділу) ---------- */
section[id] {
  scroll-margin-top: 0;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--dark);
  border-bottom: 1px solid var(--gold);
  transition: transform 0.4s ease;
}

.header--hidden {
  transform: translateY(-100%);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

/* Логотип */
.header__logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.header__logo-img {
  height: 60px;
  width: auto;
}

/* Навігація */
.header__nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 30px);
}

.header__nav-link {
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color var(--transition);
}

.header__nav-link:hover {
  color: var(--gold);
}

/* Іконки соцмереж */
.header__social {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header__social-link {
  color: var(--white);
  transition: color var(--transition);
}

.header__social-link:hover {
  color: var(--gold);
}

.header__social-link svg {
  width: 22px;
  height: 22px;
}

/* Бургер-меню */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  padding: 8px;
  gap: 5px;
  cursor: pointer;
}

.burger__line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

/* Анімація бургера при відкритті */
.burger--open .burger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger--open .burger__line:nth-child(2) {
  opacity: 0;
}

.burger--open .burger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Мобільне меню */
.mobile-menu {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: var(--header-height);
  background: var(--dark);
  border-bottom: 1px solid var(--gold);
  padding: 16px 24px 24px;
  box-shadow: 0 18px 26px rgba(13, 35, 30, 0.3);
}

.mobile-menu--open {
  display: block;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
}

.mobile-menu__link {
  display: block;
  padding: 14px 10px;
  border-bottom: 1px solid rgba(225, 207, 164, 0.15);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  transition: color var(--transition);
}

.mobile-menu__link:hover {
  color: var(--gold);
}

.mobile-menu__social {
  display: flex;
  gap: 20px;
  padding-top: 20px;
  margin-top: 8px;
}

.mobile-menu__social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.mobile-menu__social-link:hover {
  color: var(--gold);
}

/* ============================================
   HERO СЕКЦІЯ
   ============================================ */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--header-height) 24px 40px;
  background: linear-gradient(to bottom, var(--dark), var(--dark-light));
  text-align: center;
  border-bottom: 1px solid var(--gold);
}

.hero__content {
  position: relative;
  width: min(100%, 1100px);
  padding: 0 min(36%, 380px) 96px 0;
  transform: translateY(10px);
}

.hero__content::after {
  position: absolute;
  top: calc(50% - 48px);
  right: 0;
  width: min(34vw, 360px);
  height: min(34vw, 360px);
  background: url("../images/owl_hero.PNG") center / contain no-repeat;
  content: "";
  transform: translateY(-50%);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 700;
  color: var(--gold);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  text-align: left;
}

.hero__subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--white);
  line-height: 1.7;
  max-width: 600px;
  margin: 0;
  text-align: left;
  opacity: 0.9;
}

.hero__cta {
  display: inline-block;
  padding: 16px 40px;
  background: var(--gold);
  color: var(--dark);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  border-radius: 100px;
  transition:
    transform var(--transition),
    background var(--transition),
    box-shadow var(--transition);
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.hero__cta:hover {
  transform: translateX(-50%) translateY(-3px);
  background: var(--gold-hover);
  box-shadow: 0 8px 25px rgba(225, 207, 164, 0.3);
  color: var(--dark);
}

/* ============================================
   INTRO СЕКЦІЯ (бежевий фон)
   ============================================ */
.intro-section {
  background: var(--cream);
  padding: 70px 0;
  text-align: center;
  border-bottom: 1px solid var(--gold);
}

.intro-section__text {
  max-width: 860px;
  margin: 0 auto 20px;
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.8;
  color: var(--text-dark);
}

.intro-section__text:last-child {
  margin-bottom: 0;
}

.intro-section__text--accent {
  font-size: clamp(18px, 2vw, 22px);
  margin-top: 10px;
}

.promo__cta {
  display: inline-block;
  margin-top: 28px;
  padding: 13px 34px;
  background: var(--dark);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  border-radius: 100px;
  transition:
    transform var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.promo__cta:hover {
  transform: translateY(-3px);
  background: var(--dark-light);
  box-shadow: 0 8px 25px rgba(13, 35, 30, 0.25);
  color: var(--cream);
}

/* ============================================
   СЕКЦІЇ З ФОНОВИМ ЗОБРАЖЕННЯМ
   ============================================ */
.section-bg {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: calc(var(--header-height) + 40px) 24px 60px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  border-bottom: 1px solid var(--gold);
}

/* Фонові зображення для кожної секції */
.section-bg--chemistry {
  background-image: url("../images/backgrounds/chemistry_bg.jpg");
}

.section-bg--physics {
  background-image: url("../images/backgrounds/physics_bg.jpg");
}

.section-bg--philology {
  background-image: url("../images/backgrounds/philology_bg.jpg");
}

.section-bg--history {
  background-image: url("../images/backgrounds/history_bg.jpg");
}

.section-bg--biology {
  background-image: url("../images/backgrounds/biology_bg.jpg");
}

/* Білий контейнер поверх фону */
.content-box {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(225, 207, 164, 0.3);
  border-radius: 20px;
  padding: 60px;
  max-width: var(--container-max);
  width: 100%;
  margin-inline: auto;
  box-shadow:
    0 8px 30px var(--shadow),
    0 2px 8px var(--shadow-light);
}

/* ============================================
   ЗАГОЛОВКИ СЕКЦІЙ
   ============================================ */
.section__title {
  font-family: var(--font-heading);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 700;
  color: var(--gold-dark);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  position: relative;
}

.section__title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gold);
  margin-top: 14px;
  border-radius: 2px;
}

.section__subtitle {
  font-family: var(--font-heading);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 400;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 16px;
}

.section__subtitle--bottom {
  margin-top: 32px;
  margin-bottom: 0;
  text-align: center;
  color: var(--gold-dark);
  font-weight: 700;
}

.section__subtitle-sm {
  font-family: var(--font-heading);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 700;
  color: var(--text-dark);
  margin: 28px 0 20px;
  line-height: 1.4;
}

.section__text {
  font-size: clamp(14px, 1.5vw, 16px);
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 700px;
  margin-bottom: 24px;
}

.section__tagline {
  text-align: center;
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--text-dark);
  margin-top: 40px;
  line-height: 1.6;
}

.section__note {
  font-size: clamp(14px, 1.5vw, 16px);
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 24px;
}

.section__note-block {
  margin-top: 32px;
  text-align: center;
}

.section__note-accent {
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

/* ============================================
   КАРТКИ (6 карток переваг)
   ============================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
  counter-reset: card;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 200px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 4px 16px var(--shadow-light);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
  counter-increment: card;
}

.card::after {
  content: "0" counter(card);
  position: absolute;
  right: 24px;
  top: 24px;
  color: #b0bcae;
  font-family: var(--font-heading);
  font-size: 20px;
}

.card:hover {
  transform: translateY(-5px);
  border-color: #c8d0bd;
  box-shadow: 0 14px 30px var(--shadow);
}

.card__title {
  font-family: var(--font-heading);
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.35;
}

.card__text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================
   СПИСОК ЦІНОУТВОРЕННЯ
   ============================================ */
.pricing-list {
  border-top: 1px solid var(--line);
}

.pricing-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.pricing-item__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.pricing-item__text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================
   АКОРДЕОН (details/summary)
   ============================================ */
.accordion {
  margin-top: 20px;
}

.accordion__item {
  border-bottom: 1px solid var(--line);
}

.accordion__item:first-child {
  border-top: 1px solid var(--line);
}

.accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(14px, 1.5vw, 16px);
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  transition: color var(--transition);
}

.accordion__header::-webkit-details-marker {
  display: none;
}

.accordion__header:hover {
  color: var(--gold);
}

.accordion__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 400;
  color: var(--text-muted);
  transition:
    transform var(--transition),
    border-color var(--transition);
}

.accordion__item[open] .accordion__icon {
  transform: rotate(45deg);
  border-color: var(--gold);
  color: var(--gold-dark);
}

.accordion__body {
  padding: 0 40px 24px 0;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

.accordion__body ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px 16px;
  padding-left: 0;
  list-style: none;
}

.accordion__body ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 0;
}

.accordion__body ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--gold-dark);
  font-weight: 700;
}

/* Для FAQ (довгі текстові пункти) — одноколонковий список */
.section-bg--biology .accordion__body ul {
  display: block;
}

.section-bg--biology .accordion__body ul li {
  margin-bottom: 8px;
}

.accordion__body p {
  margin-bottom: 12px;
}

.accordion__body p:last-child {
  margin-bottom: 0;
}

/* ============================================
   КОНТАКТИ СЕКЦІЯ
   ============================================ */
.contact {
  background: var(--dark);
  padding: 72px 0;
  border-bottom: 1px solid var(--gold);
}

.contact__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  padding: 60px;
  border-radius: 18px;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}

.contact__inner::after {
  content: "✦";
  position: absolute;
  right: 20%;
  top: -84px;
  color: rgba(255, 255, 255, 0.03);
  font-size: 255px;
  pointer-events: none;
}

.contact__content {
  position: relative;
  z-index: 1;
}

.contact__title {
  font-family: var(--font-heading);
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 700;
  color: var(--gold);
  line-height: 1.1;
  max-width: 660px;
  margin-bottom: 20px;
}

.contact__text {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  max-width: 540px;
}

.contact__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 52px;
  padding: 15px 28px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition:
    transform var(--transition),
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-3px);
}

.btn svg {
  width: 17px;
  height: 17px;
}

.btn--primary {
  background: var(--gold);
  color: var(--dark);
}

.btn--primary:hover {
  background: var(--gold-hover);
  box-shadow: 0 8px 25px rgba(225, 207, 164, 0.3);
  color: var(--dark);
}

.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--white);
  background: transparent;
}

.btn--ghost:hover {
  background: rgba(225, 207, 164, 0.12);
  border-color: var(--gold);
  color: var(--gold);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--dark);
  border-top: 1px solid var(--gold);
  padding: 44px 0 32px;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* Логотип у футері */
.footer__logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.footer__logo-img {
  height: 60px;
  width: auto;
}

/* Навігація у футері (ПК — в лінію) */
.footer__nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2vw, 28px);
}

.footer__nav-link {
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color var(--transition);
}

.footer__nav-link:hover {
  color: var(--gold);
}

/* Соцмережі */
.footer__social {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.footer__social-link {
  color: var(--white);
  transition: color var(--transition);
}

.footer__social-link:hover {
  color: var(--gold);
}

.footer__social-link svg {
  width: 22px;
  height: 22px;
}

/* Нижня частина футера: копірайт окремою лінією нижче */
.footer__bottom {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid rgba(225, 207, 164, 0.15);
  display: flex;
  justify-content: flex-end;
}

.footer__copyright {
  font-size: 11px;
  color: var(--white);
  opacity: 0.9;
}

/* ============================================
   АНІМАЦІЇ
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}