/* =================================
   ЕТАП 0: ГЛОБАЛЬНЫЕ СТИЛИ И НАСТРОЙКИ
   ================================= */

/* --- Шрифты --- */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;700&family=Syne:wght@700;800&display=swap');

/* --- Переменные --- */
:root {
    --color-background: #111827;
    --color-text: #F9FAFB;
    --color-text-secondary: #9CA3AF;
    --color-accent: #22d3ee;
    --color-border: #374151;
    --color-surface: #1F2937;

    --font-body: 'Manrope', sans-serif;
    --font-heading: 'Syne', sans-serif;
    
    --container-width: 1240px;
    --container-padding: 20px;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text);
    line-height: 1.2;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-text);
}

ul {
    list-style: none;
}

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

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

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

/* =================================
   ЕТАП 1: ХЕДЕР
   ================================= */
.header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

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

.header__logo {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--color-text);
}

.header__logo:hover {
    color: var(--color-accent);
}

.header__menu {
    display: flex;
    gap: 32px;
}

.header__menu-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 8px 0;
    position: relative;
}

.header__menu-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.header__menu-link:hover,
.header__menu-link.is-active {
    color: var(--color-text);
}

.header__menu-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    height: 24px;
    justify-content: center;
}

.header__burger-line {
    background-color: var(--color-text);
    height: 2px;
    width: 100%;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- Адаптивность хедера --- */
@media (max-width: 768px) {
    .header__nav {
        display: none; /* Будет управляться JS */
    }

    .header__burger {
        display: flex;
    }
}

/* =================================
   ЕТАП 2: ФУТЕР
   ================================= */
.footer {
    padding: 60px 0;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer__logo {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 16px;
    display: inline-block;
}

.footer__copy {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.footer__heading {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

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

.footer__link {
    color: var(--color-text-secondary);
    font-size: 15px;
}

.footer__link:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

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

.footer__list--contacts i {
    flex-shrink: 0;
    color: var(--color-accent);
    margin-top: 4px;
}

/* --- Адаптивность футера --- */
@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 50px;
    }
}

@media (max-width: 600px) {
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer {
        padding: 40px 0;
    }

    .footer__column--logo {
        text-align: center;
    }

    .footer__heading {
        text-align: center;
    }
    
    .footer__list {
       align-items: center;
    }
}

/* ... глобальные стили и стили хедера без изменений ... */

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

/* НОВЫЙ ОБЩИЙ КЛАСС ДЛЯ КНОПОК */
.button {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 16px;
    padding: 14px 32px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.button--primary {
    background-color: var(--color-accent);
    color: var(--color-background);
}

.button--primary:hover {
    background-color: var(--color-text);
    color: var(--color-background);
    transform: translateY(-3px);
}

/* ... стили хедера без изменений ... */


/* =================================
   ЕТАП 3: HERO СЕКЦИЯ
   ================================= */

.hero {
    position: relative;
    padding: 120px 0;
    overflow: hidden; /* Важно для эффекта свечения */
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero__glow-effect {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.1), transparent 60%);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease-out;
    z-index: 1;
}

.hero__container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.hero__content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero__title {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 24px;
}

.hero__subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin-bottom: 40px;
}

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

.hero__image-wrapper {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* --- Адаптивность Hero --- */
@media (max-width: 1024px) {
    .hero__title {
        font-size: 52px;
    }
    .hero__container {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0;
        text-align: center;
    }
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero__content {
        align-items: center;
    }
    .hero__visual {
        margin-top: 40px;
    }
    .hero__glow-effect {
        width: 400px; /* Уменьшаем эффект на мобильных */
        height: 400px;
    }
    .hero__title {
        font-size: 44px;
    }
    .hero__subtitle {
        font-size: 16px;
    }
}


/* ... стили до секции hero без изменений ... */

@media (max-width: 768px) {
    .hero {
        padding: 80px 0;
        text-align: center;
    }
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero__content {
        align-items: center;
    }
    .hero__visual {
        margin-top: 40px;
    }
    .hero__glow-effect {
        width: 400px;
        height: 400px;
    }
    .hero__title {
        font-size: 44px;
    }
    .hero__subtitle {
        font-size: 16px;
    }
}

/* =================================
   НОВЫЕ СТИЛИ: СЕКЦИЯ "НАПРАВЛЕНИЯ"
   ================================= */
.courses {
    padding: 100px 0;
    background-color: var(--color-background);
}

.courses__title {
    font-size: 42px;
    text-align: center;
    margin-bottom: 60px;
}

.courses__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.course-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.course-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.1);
}

.course-card__title {
    font-size: 24px;
    margin-bottom: 16px;
}

.course-card__description {
    color: var(--color-text-secondary);
    font-size: 15px;
    margin-bottom: 24px;
    flex-grow: 1; /* Позволяет описанию занимать доступное место */
}

.course-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.course-card__tags li {
    background-color: var(--color-border);
    color: var(--color-text-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.course-card__footer {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-secondary);
    font-size: 14px;
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
}

.course-card__footer i {
    color: var(--color-accent);
}

/* ... стили до секции courses без изменений ... */

@media (max-width: 768px) {
    .courses {
        padding: 80px 0;
    }
    .courses__title {
        font-size: 36px;
    }
}


/* =================================
   НОВЫЕ СТИЛИ: СЕКЦИЯ "ПРОЦЕСС ОБУЧЕНИЯ"
   ================================= */
.process {
    padding: 100px 0;
    background-color: var(--color-background);
}

.process__title {
    font-size: 42px;
    text-align: center;
    margin-bottom: 80px;
}

.process__timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

/* Вертикальная линия таймлайна */
.process__timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--color-border);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

/* Расположение контента справа */
.timeline-item:nth-child(odd) {
    left: 50%;
}

/* Расположение контента слева */
.timeline-item:nth-child(even) {
    left: 0;
    text-align: right;
}

/* Точка на таймлайне */
.timeline-item__point {
    position: absolute;
    width: 50px;
    height: 50px;
    right: -25px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--color-accent);
    border: 4px solid var(--color-background);
    border-radius: 50%;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.timeline-item:nth-child(even) .timeline-item__point {
    left: -25px;
}

.timeline-item__point i {
    color: var(--color-background);
    width: 24px;
    height: 24px;
}

/* Контентный блок */
.timeline-item__content {
    padding: 24px 30px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    position: relative;
}

/* Стрелочка-указатель */
.timeline-item__content::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    z-index: 1;
    border: solid 10px;
    border-color: transparent transparent transparent var(--color-border);
}

.timeline-item:nth-child(odd) .timeline-item__content::before {
    left: -21px; /* -20px (ширина) - 1px (бордер) */
}

.timeline-item:nth-child(even) .timeline-item__content {
    flex-direction: row-reverse;
}

.timeline-item:nth-child(even) .timeline-item__content::before {
    right: -21px; /* -20px (ширина) - 1px (бордер) */
    border-color: transparent var(--color-border) transparent transparent;
}


.timeline-item__title {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--color-accent);
}

.timeline-item__description {
    font-size: 15px;
    color: var(--color-text-secondary);
}

/* --- Адаптивность Process --- */
@media (max-width: 992px) {
    .process__timeline::after {
        left: 25px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 15px;
        left: 0 !important; /* !important для переопределения */
        text-align: left !important;
    }

    .timeline-item__point {
        left: 0;
    }
    
    .timeline-item__content::before {
        left: -21px;
        border-color: transparent var(--color-border) transparent transparent;
    }
}

/* ... стили до секции process без изменений ... */

@media (max-width: 768px) {
    .process {
        padding: 80px 0;
    }
    .process__title {
        font-size: 36px;
        margin-bottom: 60px;
    }
}

/* =================================
   НОВЫЕ СТИЛИ: СЕКЦИЯ "ПРЕПОДАВАТЕЛИ"
   ================================= */
.mentors {
    padding: 100px 0;
    background-color: var(--color-surface); /* Меняем фон для визуального разделения секций */
}

.mentors__title {
    font-size: 42px;
    text-align: center;
    margin-bottom: 60px;
}

.mentors__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.mentor-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mentor-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.mentor-card__photo-wrapper {
    width: 120px;
    height: 120px;
    margin: 0 auto 24px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--color-border);
}

.mentor-card__photo-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mentor-card__name {
    font-size: 22px;
    margin-bottom: 8px;
    color: var(--color-text);
}

.mentor-card__role {
    color: var(--color-accent);
    font-size: 15px;
    margin-bottom: 24px;
}

.mentor-card__social-link {
    position: absolute;
    bottom: -50px; /* Изначально скрыта */
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-accent);
    color: var(--color-background);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: bottom 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.mentor-card:hover .mentor-card__social-link {
    bottom: 20px; /* Появляется при наведении */
}

.mentor-card__social-link i {
    width: 20px;
    height: 20px;
}
/* ... стили до секции mentors без изменений ... */

@media (max-width: 768px) {
    .mentors {
        padding: 80px 0;
    }
    .mentors__title {
        font-size: 36px;
    }
}

/* =================================
   НОВЫЕ СТИЛИ: СЕКЦИЯ "ОТЗЫВЫ"
   ================================= */
.reviews {
    padding: 100px 0;
    background-color: var(--color-background);
}

.reviews__title {
    font-size: 42px;
    text-align: center;
    margin-bottom: 60px;
}

.reviews__slider-wrapper {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.reviews-slider {
    padding-bottom: 60px; /* Место для пагинации */
}

.review-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px;
    height: 100%; /* Для выравнивания высоты слайдов */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

.review-card::before {
    content: '“';
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: var(--font-heading);
    font-size: 100px;
    color: var(--color-border);
    line-height: 1;
    z-index: 1;
}

.review-card__text {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    position: relative;
    z-index: 2;
}

.review-card__author {
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    z-index: 2;
}

.review-card__author-photo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.review-card__author-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.review-card__author-course {
    font-size: 14px;
    color: var(--color-accent);
}

/* Стилизация элементов Swiper */
.reviews__slider-wrapper .swiper-button-next,
.reviews__slider-wrapper .swiper-button-prev {
    color: var(--color-accent);
    width: 50px;
    height: 50px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.reviews__slider-wrapper .swiper-button-next:hover,
.reviews__slider-wrapper .swiper-button-prev:hover {
    background-color: var(--color-accent);
    color: var(--color-surface);
}

.reviews__slider-wrapper .swiper-button-next::after,
.reviews__slider-wrapper .swiper-button-prev::after {
    font-size: 20px;
    font-weight: 900;
}

.reviews__slider-wrapper .swiper-pagination-bullet {
    background-color: var(--color-border);
    opacity: 0.7;
}

.reviews__slider-wrapper .swiper-pagination-bullet-active {
    background-color: var(--color-accent);
    opacity: 1;
}

/* ... стили до секции reviews без изменений ... */

.reviews__slider-wrapper .swiper-pagination-bullet-active {
    background-color: var(--color-accent);
    opacity: 1;
}

/* =================================
   НОВЫЕ СТИЛИ: СЕКЦИЯ "КОНТАКТЫ"
   ================================= */

.contact {
    padding: 100px 0;
    background-color: var(--color-surface);
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.contact__title {
    font-size: 42px;
    margin-bottom: 20px;
}

.contact__subtitle {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 450px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-size: 15px;
    color: var(--color-text-secondary);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"] {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 14px;
    color: var(--color-text);
    font-size: 16px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}

.form-group--checkbox {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.form-group--checkbox label {
    margin-bottom: 0;
    font-size: 14px;
}

.form-group--checkbox a {
    text-decoration: underline;
}

.form-group--checkbox input[type="checkbox"] {
    width: 1.2em;
    height: 1.2em;
    accent-color: var(--color-accent);
}

.contact-form__button {
    margin-top: 10px;
    width: 100%;
}

.form-success-message {
    display: none; /* Скрыто по умолчанию */
    text-align: center;
    padding: 40px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.form-success-message i {
    color: var(--color-accent);
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
}

.form-success-message h4 {
    font-size: 24px;
    margin-bottom: 8px;
}

.form-success-message p {
    color: var(--color-text-secondary);
}


/* ... стили до адаптивности contact без изменений ... */

/* --- Адаптивность Contact --- */
@media (max-width: 992px) {
    .contact__container {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .contact__info {
        text-align: center;
    }
    .contact__subtitle {
        margin: 0 auto;
    }
}

/* ... стили футера без изменений ... */

/* =================================
   НОВЫЕ СТИЛИ: COOKIE POP-UP
   ================================= */
.cookie-popup {
    position: fixed;
    bottom: -100%; /* Изначально скрыт */
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 20px;
    z-index: 200;
    transition: bottom 0.5s ease-in-out;
}

.cookie-popup.is-visible {
    bottom: 0;
}

.cookie-popup__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    gap: 20px;
}

.cookie-popup__text {
    color: var(--color-text-secondary);
    font-size: 15px;
}

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

/* Модификатор для маленькой кнопки */
.button--small {
    padding: 10px 24px;
    font-size: 15px;
}

@media (max-width: 768px) {
    .cookie-popup__content {
        flex-direction: column;
        text-align: center;
    }
}

/* =================================
   НОВЫЕ СТИЛИ: СТРАНИЦЫ ПОЛИТИК
   ================================= */
.pages {
    padding: 80px 0;
}

.pages h1 {
    font-size: 48px;
    margin-bottom: 32px;
}

.pages h2 {
    font-size: 32px;
    margin-top: 40px;
    margin-bottom: 20px;
}

.pages p, 
.pages li {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.pages ul {
    list-style-type: disc;
    padding-left: 20px;
}

.pages a {
    text-decoration: underline;
}

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

.pages strong {
    color: var(--color-text);
    font-weight: 700;
}