/* ====================
   ГЛОБАЛЬНЫЕ СТИЛИ
   ==================== */
:root {
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Rubik', sans-serif;

    --color-bg: #0D1B2A;
    --color-bg-secondary: #1B263B;
    --color-text: #E0E1DD;
    --color-accent: #3DDC97;
    --color-secondary: #415A77;
    
    --container-width: 1200px;
    --container-padding: 16px;
    
    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.6;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

h1, h2, h3 {
    font-family: var(--font-secondary);
    font-weight: 700;
    color: #fff;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

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


/* ====================
   ХЕДЕР
   ==================== */
.header {
    background-color: rgba(13, 27, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-secondary);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.header__logo {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.header__nav-link {
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__nav-link--button {
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.header__nav-link--button:hover {
    background-color: #fff;
    color: var(--color-bg);
}

.header__nav-link--button::after {
    display: none;
}

.header__burger-button {
    display: none;
    color: var(--color-text);
}

/* Адаптив для хедера */
@media (max-width: 768px) {
    .header__nav {
        display: none; /* Будет управляться через JS */
    }
    .header__burger-button {
        display: block;
    }
}


/* ====================
   ФУТЕР
   ==================== */
.footer {
    background-color: var(--color-bg-secondary);
    padding: 60px 0 0;
    border-top: 1px solid var(--color-secondary);
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer__logo {
    font-family: var(--font-secondary);
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    display: inline-block;
    margin-bottom: 16px;
}

.footer__description {
    font-size: 14px;
    color: var(--color-text);
    opacity: 0.8;
}

.footer__title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fff;
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__link {
    font-size: 15px;
    color: var(--color-text);
    opacity: 0.8;
    position: relative;
}

.footer__link:hover {
    opacity: 1;
    color: var(--color-accent);
}

.footer__list--contacts li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.footer__icon {
    flex-shrink: 0;
    margin-top: 4px;
    color: var(--color-accent);
    width: 16px;
    height: 16px;
}

.footer__bottom {
    border-top: 1px solid var(--color-secondary);
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
    color: var(--color-text);
    opacity: 0.6;
}

/* ====================
   СЕКЦИЯ HERO
   ==================== */
.hero {
    min-height: 100vh;
    padding-top: var(--header-height); /* Отступ для фиксированного хедера */
    display: flex;
    align-items: center;
    overflow: hidden; /* Предотвращает появление горизонтальной прокрутки из-за анимаций */
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
    padding-top: 40px;
    padding-bottom: 60px;
}

.hero__title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero__title--accent {
    color: var(--color-accent);
}

.hero__subtitle {
    font-size: 18px;
    max-width: 500px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.hero__cta {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(61, 220, 151, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero__cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(61, 220, 151, 0.3);
}

.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image {
    width: 100%;
    max-width: 550px;
    height: auto;
    border-radius: 20px;
    /* Можно добавить эффект, например, легкую тень или градиентную обводку */
    border: 1px solid var(--color-secondary);
}

/* Адаптив для Hero */
@media (max-width: 992px) {
    .hero__title {
        font-size: 44px;
    }
    .hero__subtitle {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto; /* Убираем высоту в 100vh на мобильных */
        text-align: center;
    }
    .hero__container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .hero__content {
        order: 2; /* Текст будет под картинкой */
    }
    .hero__visual {
        order: 1;
    }
    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero__image {
        max-width: 400px;
    }
}

/* ====================
   ОБЩИЕ СТИЛИ СЕКЦИЙ
   ==================== */
.about, .courses { /* Добавим сюда будущие секции для общих отступов */
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header__title {
    font-size: 36px;
    margin-bottom: 16px;
}

.section-header__subtitle {
    font-size: 18px;
    color: var(--color-text);
    opacity: 0.8;
}


/* ====================
   СЕКЦИЯ "О ПЛАТФОРМЕ"
   ==================== */
.about__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-secondary);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--color-accent);
}

.feature-card__icon-wrapper {
    margin: 0 auto 24px;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: rgba(61, 220, 151, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-card__icon {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.feature-card__title {
    font-size: 22px;
    margin-bottom: 12px;
}

.feature-card__text {
    font-size: 15px;
    opacity: 0.8;
}

/* Адаптив для заголовков секций */
@media (max-width: 768px) {
    .about, .courses {
        padding: 60px 0;
    }
    .section-header__title {
        font-size: 28px;
    }
    .section-header__subtitle {
        font-size: 16px;
    }
}

/* ====================
   СЕКЦИЯ "НАПРАВЛЕНИЯ"
   ==================== */
.courses__tabs-wrapper {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-secondary);
    border-radius: 12px;
    padding: 20px;
}

.courses__tabs-list {
    display: flex;
    gap: 10px;
    border-bottom: 1px solid var(--color-secondary);
    margin-bottom: 24px;
    overflow-x: auto; /* Для мобильных устройств */
    padding-bottom: 10px;
}
/* Стилизация скроллбара для табов */
.courses__tabs-list::-webkit-scrollbar { height: 4px; }
.courses__tabs-list::-webkit-scrollbar-track { background: transparent; }
.courses__tabs-list::-webkit-scrollbar-thumb { background: var(--color-secondary); border-radius: 2px; }


.courses__tab-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 500;
    color: var(--color-text);
    opacity: 0.7;
    position: relative;
    white-space: nowrap;
    transition: background-color 0.3s ease, opacity 0.3s ease;
}

.courses__tab-button:hover {
    background-color: rgba(255, 255, 255, 0.05);
    opacity: 1;
}

.courses__tab-button.is-active {
    opacity: 1;
    color: #fff;
    background-color: var(--color-secondary);
}

.courses__tab-button.is-active::after {
    content: '';
    position: absolute;
    bottom: -11px; /* Выравнивание под кнопкой, над бордером */
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.courses__tab-button > i {
    width: 18px;
    height: 18px;
}


.courses__tab-panel {
    display: none;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 40px;
    animation: fadeIn 0.5s ease;
}

.courses__tab-panel.is-active {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.courses__panel-content h3 {
    font-size: 28px;
    margin-bottom: 16px;
}

.courses__panel-content p {
    margin-bottom: 24px;
    opacity: 0.9;
    max-width: 500px;
}

.courses__panel-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.courses__panel-tags li {
    background-color: rgba(61, 220, 151, 0.1);
    color: var(--color-accent);
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
}

.courses__panel-visual img {
    border-radius: 12px;
    width: 100%;
}

/* Адаптив для табов */
@media (max-width: 768px) {
    .courses__tab-panel.is-active {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .courses__panel-content {
        order: 2;
    }
    .courses__panel-visual {
        order: 1;
    }
}

/* ====================
   ОБЩИЕ СТИЛИ СЕКЦИЙ (Оновлення)
   ==================== */
.about, .courses, .how-it-works { /* Додано .how-it-works */
    padding: 80px 0;
}
@media (max-width: 768px) {
    .about, .courses, .how-it-works { /* Додано .how-it-works */
        padding: 60px 0;
    }
}

/* ====================
   СЕКЦІЯ "ЯК ЦЕ ПРАЦЮЄ"
   ==================== */
.how-it-works {
    background-color: var(--color-bg-secondary);
}

.how-it-works__steps-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
}

/* Лінія-з'єднувач */
.how-it-works__steps-container::before {
    content: '';
    position: absolute;
    top: 60px; /* Вирівнювання по центру іконок */
    left: 15%;
    right: 15%;
    height: 2px;
    background: repeating-linear-gradient(
        90deg, 
        var(--color-secondary), 
        var(--color-secondary) 8px, 
        transparent 8px, 
        transparent 16px
    );
    z-index: 1;
}

.step {
    position: relative;
    z-index: 2;
}

.step__content {
    background-color: var(--color-bg);
    border: 1px solid var(--color-secondary);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    height: 100%;
}

.step__number {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 60px;
    font-family: var(--font-secondary);
    font-weight: 700;
    color: var(--color-secondary);
    opacity: 0.5;
    z-index: -1;
}

.step__icon-wrapper {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background-color: var(--color-bg-secondary);
    border: 2px solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(61, 220, 151, 0.2);
}

.step__icon-wrapper i {
    width: 30px;
    height: 30px;
    color: var(--color-accent);
}

.step__title {
    font-size: 20px;
    margin-bottom: 10px;
    color: #fff;
}

.step__description {
    font-size: 15px;
    opacity: 0.8;
}

/* Адаптив для секції */
@media (max-width: 992px) {
    .how-it-works__steps-container::before {
        left: 10%;
        right: 10%;
    }
}

@media (max-width: 768px) {
    .how-it-works__steps-container {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    /* Ховаємо лінію на мобільних, бо кроки йдуть один під одним */
    .how-it-works__steps-container::before {
        display: none;
    }
    .step__number {
        font-size: 50px;
        top: -25px;
    }
}

/* ====================
   ОБЩИЕ СТИЛИ СЕКЦИЙ (ОБНОВЛЕНИЕ)
   ==================== */
.about, .courses, .how-it-works, .faq { /* Добавлено .faq */
    padding: 80px 0;
}
@media (max-width: 768px) {
    .about, .courses, .how-it-works, .faq { /* Добавлено .faq */
        padding: 60px 0;
    }
}

/* ====================
   СЕКЦИЯ FAQ
   ==================== */
.faq__accordion {
    max-width: 750px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-secondary);
    border-radius: 8px;
    transition: background-color 0.3s;
}

.faq-item.is-active {
    background-color: var(--color-secondary);
}

.faq-item__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px;
    font-size: 18px;
    font-weight: 500;
    color: #fff;
    text-align: left;
}

.faq-item__icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    transition: transform 0.3s ease-in-out;
}

.faq-item.is-active .faq-item__icon {
    transform: rotate(180deg);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-in-out, padding 0.2s ease;
}

.faq-item__answer p {
    padding: 0 20px 20px;
    font-size: 16px;
    opacity: 0.9;
    line-height: 1.7;
}
/* ====================
   ОБЩИЕ СТИЛИ СЕКЦИЙ (ОБНОВЛЕНИЕ)
   ==================== */
.about, .courses, .how-it-works, .faq, .contact { /* Добавлено .contact */
    padding: 80px 0;
}
@media (max-width: 768px) {
    .about, .courses, .how-it-works, .faq, .contact { /* Добавлено .contact */
        padding: 60px 0;
    }
}
.contact {
    background-color: var(--color-bg-secondary);
}

/* ====================
   СЕКЦИЯ "КОНТАКТЫ"
   ==================== */
.contact__form-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-bg);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--color-secondary);
}

.contact-form__group {
    margin-bottom: 20px;
}

.contact-form__label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.contact-form__input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--color-secondary);
    background-color: var(--color-bg-secondary);
    color: var(--color-text);
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.contact-form__input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.2);
}

.contact-form__input.is-invalid {
    border-color: #e94560; /* Яркий цвет для ошибки */
}

.contact-form__group--captcha {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-form__captcha-question {
    font-weight: 600;
}

.contact-form__input--captcha {
    width: 80px;
}

.contact-form__group--checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.contact-form__checkbox {
    margin-top: 5px;
    flex-shrink: 0;
    accent-color: var(--color-accent); /* Стилизация стандартного чекбокса */
    width: 16px;
    height: 16px;
}

.contact-form__checkbox-label {
    font-size: 14px;
    opacity: 0.8;
}

.contact-form__checkbox-label a {
    color: var(--color-accent);
    text-decoration: underline;
}

.contact-form__submit-button {
    width: 100%;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(61, 220, 151, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-top: 10px;
}

.contact-form__submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(61, 220, 151, 0.3);
}

/* Сообщение об успехе */
.contact-form__success-message {
    display: none; /* Скрыто по умолчанию */
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.contact-form__success-message.is-visible {
    display: block;
}

.contact-form__success-message i {
    width: 60px;
    height: 60px;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.contact-form__success-message h3 {
    font-size: 24px;
    margin-bottom: 8px;
}
/* ====================
   COOKIE POP-UP
   ==================== */
.cookie-popup {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 450px;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-secondary);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2);
    z-index: 1001;

    display: flex;
    align-items: center;
    gap: 20px;

    transform: translateY(200%);
    transition: transform 0.5s ease-in-out;
}

.cookie-popup.is-visible {
    transform: translateY(0);
}

.cookie-popup__text {
    font-size: 14px;
    opacity: 0.9;
}

.cookie-popup__text a {
    color: var(--color-accent);
    text-decoration: underline;
}

.cookie-popup__button {
    flex-shrink: 0;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    transition: background-color 0.3s;
}

.cookie-popup__button:hover {
    background-color: #fff;
}

@media(max-width: 480px) {
    .cookie-popup {
        flex-direction: column;
        text-align: center;
        gap: 12px;
        left: 10px;
        right: 10px;
        bottom: 10px;
    }
}

/* ====================
   СТИЛИ ДЛЯ СТРАНИЦ ПОЛИТИК
   ==================== */
.pages {
    padding: calc(var(--header-height) + 40px) 0 80px;
}

.pages .container {
    max-width: 800px; /* Ограничиваем ширину для лучшей читабельности */
}

.pages h1 {
    font-size: 40px;
    margin-bottom: 24px;
    color: #fff;
}

.pages h2 {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 16px;
    color: #fff;
}

.pages p, .pages li {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    opacity: 0.9;
    margin-bottom: 16px;
}

.pages a {
    color: var(--color-accent);
    text-decoration: underline;
    font-weight: 500;
}

.pages a:hover {
    text-decoration: none;
}

.pages ul {
    list-style: disc;
    padding-left: 24px;
}

.pages strong {
    color: #fff;
    font-weight: 600;
}