/* ГЛОБАЛЬНЫЕ СТИЛИ И ПЕРЕМЕННЫЕ */
:root {
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Jost', sans-serif;
    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-background: #F9FAFB;
    --color-accent: #4f46e5;
    --color-accent-hover: #4338ca;
    --color-border: #D1D5DB;
    --color-white: #FFFFFF;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
}

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

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

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
}

/* ХЕДЕР */
.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.8);
}

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

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

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

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}

.header__nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 5px 0;
    position: relative;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 50%;
    background-color: var(--color-accent);
    transition: all 0.3s ease-in-out;
}

.header__nav-link:hover::after {
    width: 100%;
    left: 0;
}

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

.header__nav-link--cta {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 8px 18px;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.header__nav-link--cta:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-white);
}

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

.header__burger-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-primary);
}

/* ФУТЕР */
.footer {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: 60px 0;
    font-size: 15px;
    color: var(--color-text-secondary);
}

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

.footer__column--brand {
    grid-column: span 1;
}

.footer__logo {
    font-family: var(--font-secondary);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text-primary);
    display: inline-block;
    margin-bottom: 15px;
}

.footer__logo:hover {
    color: var(--color-text-primary);
}

.footer__copyright {
    line-height: 1.5;
}

.footer__title {
    font-size: 18px;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

.footer__list li {
    margin-bottom: 12px;
}

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

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

.footer__icon {
    width: 18px;
    height: 18px;
    margin-right: 10px;
    flex-shrink: 0;
    margin-top: 3px;
}

/* АДАПТИВНОСТЬ */
@media (max-width: 992px) {
    .footer__container {
        grid-template-columns: repeat(2, 1fr);
        gap: 50px;
    }
}

@media (max-width: 768px) {
    .header__nav {
        /* Логика для мобильного меню будет добавлена позже с JS */
        display: none;
    }

    .header__burger-btn {
        display: block;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 15px;
    }
    .footer__container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .footer__list--contacts li {
        justify-content: center;
        text-align: left;
    }
    .footer__copyright {
        margin: 0 auto;
    }
}

/* HERO SECTION */
.hero {
    padding: 80px 0;
    overflow: hidden; /* Важно для предотвращения выхода элементов за пределы блока при анимации */
}

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

.hero__content {
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero__title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    min-height: 125px; /* Резервируем место под заголовок, чтобы не было скачка контента */
}

/* Эффект курсора для печатающейся машинки */
.hero__title::after {
    content: '|';
    animation: blink 0.7s infinite;
    font-weight: 300;
    color: var(--color-text-secondary);
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero__subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin-bottom: 30px;
    opacity: 0; /* Изначально скрыт для анимации */
    transform: translateY(10px);
    transition: opacity 0.5s ease-out 0.3s, transform 0.5s ease-out 0.3s;
}

.hero__cta-button {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.3s ease;
    opacity: 0; /* Изначально скрыт для анимации */
    transform: translateY(10px);
    transition: all 0.5s ease-out 0.5s;
}

.hero__cta-button:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
    color: var(--color-white);
}

/* Классы для JS анимации появления */
.hero__subtitle.is-visible,
.hero__cta-button.is-visible {
    opacity: 1;
    transform: translateY(0);
}

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

.hero__image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    transition: transform 0.2s ease-out; /* Плавность для параллакса */
}

/* АДАПТИВНОСТЬ ДЛЯ HERO */
@media (max-width: 992px) {
    .hero__title {
        font-size: 44px;
        min-height: 106px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
        text-align: center;
    }
    .hero__container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero__content {
        order: 2;
    }
    .hero__visual {
        order: 1;
    }
    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero__title {
        font-size: 38px;
        min-height: 92px;
    }
}

/* ОБЩИЕ СТИЛИ ДЛЯ СЕКЦИЙ */
.section-title {
    font-size: 38px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px;
}

/* COURSES SECTION */
.courses {
    padding: 80px 0;
    background-color: var(--color-white);
}

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

.course-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.course-card__icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 8px;
    margin-bottom: 20px;
}

.course-card__icon i {
    width: 28px;
    height: 28px;
}

.course-card__title {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--color-text-primary);
}

.course-card__description {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    flex-grow: 1; /* Чтобы карточки были одинаковой высоты */
}

.course-card__tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 25px;
}

.course-card__tech-item {
    font-size: 13px;
    font-weight: 500;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    padding: 4px 10px;
    border-radius: 16px;
}

.course-card__link {
    font-weight: 600;
    color: var(--color-accent);
    display: flex;
    align-items: center;
}

.course-card__link i {
    width: 18px;
    height: 18px;
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.course-card:hover .course-card__link i {
    transform: translateX(4px);
}

/* АДАПТИВНОСТЬ ДЛЯ COURSES */
@media (max-width: 768px) {
    .section-title {
        font-size: 32px;
    }
    .section-subtitle {
        font-size: 16px;
        margin-bottom: 40px;
    }
    .courses {
        padding: 60px 0;
    }
}

/* PROCESS SECTION */
.process {
    padding: 80px 0;
    position: relative;
}

.process__timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.process__item {
    display: flex;
    align-items: center;
    position: relative;
    width: calc(50% - 40px);
}

.process__content {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
    width: 100%;
}

.process__step {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    background-color: #e0e7ff;
    padding: 4px 10px;
    border-radius: 16px;
    margin-bottom: 15px;
}

.process__title {
    font-size: 20px;
    margin-bottom: 8px;
}

.process__description {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.process__visual {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.process__icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-white);
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.process__icon i {
    width: 24px;
    height: 24px;
}

.process__line {
    width: 2px;
    height: calc(100% + 40px); /* 100% высоты .process__item + gap */
    background-color: var(--color-accent);
    position: absolute;
    top: 50%;
    z-index: 0;
}
/* Расположение элементов на таймлайне */
.process__item:nth-child(odd) {
    align-self: flex-start;
}
.process__item:nth-child(odd) .process__visual {
    right: -80px;
}

.process__item:nth-child(even) {
    align-self: flex-end;
}
.process__item:nth-child(even) .process__visual {
    left: -80px;
}

/* Последний элемент не должен иметь линию вниз */
.process__item:last-child .process__line {
    display: none;
}

/* АДАПТИВНОСТЬ ДЛЯ PROCESS */
@media (max-width: 768px) {
    .process__timeline {
        gap: 30px;
    }
    .process__item,
    .process__item:nth-child(even) {
        width: 100%;
        align-self: flex-start;
        padding-left: 60px; /* Отступ для линии */
    }

    .process__visual,
    .process__item:nth-child(even) .process__visual {
        left: 0;
        right: auto;
    }
    
    .process__line {
        height: calc(100% + 30px);
    }
}

@media (max-width: 576px) {
    .process {
        padding: 60px 0;
    }
    .process__item,
    .process__item:nth-child(even) {
       padding-left: 50px;
    }
    .process__icon {
        width: 40px;
        height: 40px;
    }
    .process__icon i {
        width: 20px;
        height: 20px;
    }
}
/* MENTORS SECTION */
.mentors {
    padding: 80px 0;
    background-color: var(--color-white);
}

.mentors__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.mentor-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden; /* Скрывает части изображения, выходящие за рамки */
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mentor-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.mentor-card__image-wrapper {
    overflow: hidden; /* Важно для эффекта зума */
    aspect-ratio: 1 / 1;
}

.mentor-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.mentor-card:hover .mentor-card__image {
    transform: scale(1.05);
}

.mentor-card__content {
    padding: 25px;
}

.mentor-card__name {
    font-size: 20px;
    margin-bottom: 5px;
}

.mentor-card__title {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-bottom: 15px;
    min-height: 45px; /* Для выравнивания высоты карточек */
}

.mentor-card__socials {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.mentor-card__socials a {
    color: var(--color-text-secondary);
}

.mentor-card__socials a:hover {
    color: var(--color-accent);
}

/* АДАПТИВНОСТЬ ДЛЯ MENTORS */
@media (max-width: 768px) {
    .mentors {
        padding: 60px 0;
    }
}

/* REVIEWS SECTION */
.reviews {
    padding: 80px 0;
}

.reviews__slider-wrapper {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.reviews__slider {
    width: 100%;
    padding: 10px; /* Небольшой отступ, чтобы тень карточки не обрезалась */
}

.review-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    user-select: none; /* Чтобы текст не выделялся при свайпе */
}

.review-card__text {
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 30px;
    position: relative;
    padding-left: 40px;
}

.review-card__text::before {
    content: '“';
    font-family: 'Times New Roman', Times, serif;
    font-size: 80px;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.1;
    position: absolute;
    left: -10px;
    top: -20px;
}

.review-card__author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.review-card__author-image {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.review-card__author-name {
    display: block;
    font-weight: 600;
    font-size: 16px;
    color: var(--color-text-primary);
}

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

/* Slider Controls */
.reviews__slider-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.reviews__slider-button:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.reviews__slider-button--prev {
    left: -22px;
}

.reviews__slider-button--next {
    right: -22px;
}

.swiper-button-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.reviews__slider-pagination {
    margin-top: 25px;
    text-align: center;
}

.swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background-color: var(--color-border);
    opacity: 1;
    transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
    background-color: var(--color-accent);
    width: 25px;
    border-radius: 5px;
}

/* АДАПТИВНОСТЬ ДЛЯ REVIEWS */
@media (max-width: 900px) {
    .reviews__slider-button {
        display: none; /* Скрываем стрелки на мобильных, свайп удобнее */
    }
}

@media (max-width: 768px) {
    .reviews {
        padding: 60px 0;
    }
    .review-card {
        padding: 30px;
    }
    .review-card__text {
        font-size: 16px;
    }
}
/* CONTACT SECTION */
.contact {
    padding: 80px 0;
    background-color: var(--color-white);
}

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

.contact__title, .contact__subtitle {
    text-align: left;
    margin-left: 0;
    margin-right: 0;
}

.contact__subtitle {
    margin-bottom: 30px;
}

.contact__details {
    list-style: none;
    padding: 0;
}

.contact__details li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 16px;
    margin-bottom: 15px;
}

.contact__details i {
    color: var(--color-accent);
    width: 22px;
}

.contact__details a {
    color: var(--color-text-secondary);
    font-weight: 500;
}
.contact__details a:hover {
    color: var(--color-accent);
}

.contact__form-container {
    background: var(--color-background);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

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

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

.form-label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 16px;
    font-family: var(--font-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group--captcha {
    align-items: center;
    flex-direction: row;
    gap: 15px;
}
.form-group--captcha .form-label {
    margin-bottom: 0;
}
.form-group--captcha .form-input {
    width: 80px;
}

.form-group--checkbox {
    flex-direction: row;
    align-items: flex-start;
    gap: 10px;
}
.form-group--checkbox input {
    margin-top: 5px;
    flex-shrink: 0;
}
.form-group--checkbox label {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 400;
}
.form-group--checkbox label a {
    text-decoration: underline;
}

.form-error {
    font-size: 13px;
    color: #ef4444;
    padding-top: 4px;
    display: none;
}
.form-input.is-invalid {
    border-color: #ef4444;
}
.form-input.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.contact-form__button {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
    margin-top: 10px;
}

.contact-form__button:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
}
.contact-form__button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.contact-form__success-message {
    display: none;
    text-align: center;
    padding: 40px;
}

.contact-form__success-message i {
    width: 60px;
    height: 60px;
    color: #10b981;
    margin-bottom: 20px;
}
.contact-form__success-message h4 {
    font-size: 22px;
    margin-bottom: 10px;
}

/* АДАПТИВНОСТЬ ДЛЯ CONTACT */
@media (max-width: 992px) {
    .contact__wrapper {
        grid-template-columns: 1fr;
    }
    .contact__info {
        text-align: center;
    }
    .contact__title, .contact__subtitle {
        text-align: center;
        margin: 0 auto 15px;
    }
    .contact__details {
        justify-content: center;
        display: inline-flex;
        flex-direction: column;
        align-items: center;
    }
}

/* COOKIE POP-UP */
.cookie-popup {
    position: fixed;
    bottom: -100%; /* Изначально скрыт */
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: 0 -5px 20px rgba(0,0,0,0.08);
    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;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.cookie-popup__text a {
    font-weight: 500;
    text-decoration: underline;
}

.cookie-popup__button {
    background-color: var(--color-accent);
    color: var(--color-white);
    border: none;
    padding: 10px 25px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    flex-shrink: 0;
    transition: background-color 0.3s ease;
}
.cookie-popup__button:hover {
    background-color: var(--color-accent-hover);
}

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

/* СТИЛИ ДЛЯ СТРАНИЦ ПОЛИТИК */
.pages {
    padding: 60px 0;
    background-color: var(--color-white);
}

.pages .container {
    max-width: 800px; /* Делаем контейнер уже для лучшей читабельности текста */
}

.pages h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 15px;
}

.pages h2 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 20px;
}

.pages p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-primary);
    margin-bottom: 20px;
}

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

.pages li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.pages a {
    font-weight: 500;
    text-decoration: underline;
}

.pages strong {
    font-weight: 600;
    color: var(--color-text-primary);
}