/* --- Глобальные настройки и переменные --- */
:root {
    --font-main: 'Inter', sans-serif;
    --font-headings: 'Space Grotesk', sans-serif;
    
    --background-color: #121212;
    --surface-color: #1E1E1E;
    --primary-color: #BB86FC;
    --primary-variant-color: #3700B3;
    --text-color: #E0E0E0;
    --text-secondary-color: #A0A0A0;

    --container-width: 1200px;
    --container-padding: 1rem;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

ul {
    list-style: none;
}

h1, h2, h3 {
    font-family: var(--font-headings);
    font-weight: 500;
}

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

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


/* --- Хедер --- */
.header {
    padding: 1.5rem 0;
    background-color: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--surface-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.header__logo {
    font-family: var(--font-headings);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.nav__list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    color: var(--text-secondary-color);
    font-weight: 500;
    position: relative;
    padding: 0.25rem 0;
}

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

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__link:hover,
.nav__link.active {
    color: var(--text-color);
}

.nav__link--cta {
    background-color: var(--primary-color);
    color: var(--background-color);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.nav__link--cta:hover {
    background-color: var(--primary-variant-color);
    color: var(--text-color);
}

.nav__link--cta::after {
    display: none;
}

.header__burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 101;
}

/* --- Футер --- */
.footer {
    background-color: var(--surface-color);
    padding-top: 4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding-bottom: 4rem;
}

.footer__logo {
    font-family: var(--font-headings);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    display: inline-block;
    margin-bottom: 1rem;
}

.footer__tagline {
    color: var(--text-secondary-color);
    max-width: 250px;
}

.footer__title {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.footer-nav__list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-nav__link {
    color: var(--text-secondary-color);
}

.footer-contacts__list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    color: var(--text-secondary-color);
}

.footer-contacts__link {
     color: var(--text-secondary-color);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-secondary-color);
    font-size: 0.9rem;
}

/* --- Адаптивность --- */
@media (max-width: 768px) {
    .nav__list {
        display: none; /* Будет реализовано позже с JS */
    }

    .header__burger {
        display: flex;
        flex-direction: column;
        gap: 5px;
    }
    
    .header__burger span {
        display: block;
        width: 25px;
        height: 2px;
        background-color: var(--text-color);
    }

    .footer__container {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
    
    .footer__column--brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 480px) {
    .footer__container {
        grid-template-columns: 1fr;
    }
}
/* style.css */

/* --- Общий стиль для кнопок --- */
.button {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-family: var(--font-headings);
    font-weight: 500;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    background-color: var(--primary-color);
    color: var(--background-color);
}

.button:hover {
    background-color: var(--primary-variant-color);
    color: var(--text-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}


/* --- Секция Hero --- */
.hero {
    min-height: calc(100vh - 80px); /* 80px - примерная высота хедера */
    display: flex;
    align-items: center;
    padding: 4rem 0;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 3rem;
}

.hero__content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero__title {
    font-size: 3.5rem;
    line-height: 1.2;
    font-weight: 700;
    color: var(--text-color);
}

/* Эффект курсора для анимации печати */
.hero__title::after {
    content: '▋';
    display: inline-block;
    animation: blink 0.7s infinite;
    color: var(--primary-color);
    margin-left: 0.25rem;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero__description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary-color);
    max-width: 500px;
}

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

.hero__image-wrapper {
    border-radius: 2rem;
    overflow: hidden;
    position: relative;
    z-index: 2;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
}

/* Декоративный элемент за изображением */
.hero__visual::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--primary-variant-color));
    filter: blur(80px);
    opacity: 0.3;
    z-index: 1;
}

/* --- Адаптивность для Hero --- */
@media (max-width: 992px) {
    .hero__title {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .hero {
        text-align: center;
        min-height: auto;
    }
    .hero__container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    .hero__content {
        align-items: center;
    }
    .hero__description {
        max-width: 100%;
    }
}
/* Добавить в style.css */
.hero__title.typing-done::after {
    content: none;
}

/* style.css */

/* --- Общие стили для секций --- */
.features {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header__title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header__subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary-color);
    line-height: 1.7;
}

/* --- Стили для карточек (features) --- */
.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--surface-color);
    border: 1px solid transparent;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.feature-card__icon {
    margin: 0 auto 1.5rem;
    background-color: var(--primary-variant-color);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
}

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

.feature-card__title {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.feature-card__description {
    color: var(--text-secondary-color);
    font-size: 0.95rem;
}

/* --- Адаптивность --- */
@media (max-width: 768px) {
    .features {
        padding: 4rem 0;
    }
    
    .section-header__title {
        font-size: 2rem;
    }
}

/* style.css */

/* --- Секция с табами --- */
.tabs-section {
    padding: 6rem 0;
    background-color: var(--surface-color); /* Выделим секцию другим фоном */
}

.tabs-component {
    display: grid;
    grid-template-columns: 250px 1fr; /* Левая колонка для кнопок, правая для контента */
    gap: 3rem;
    min-height: 400px;
}

.tabs-component__nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tabs-component__button {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    color: var(--text-secondary-color);
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.tabs-component__button i {
    width: 20px;
    height: 20px;
}

.tabs-component__button:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
}

.tabs-component__button--active {
    background-color: var(--primary-variant-color);
    color: var(--text-color);
    border-color: var(--primary-color);
}

.tabs-component__content {
    position: relative;
}

.tabs-component__pane {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    
    /* Стили для анимации */
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease;
}

.tabs-component__pane--active {
    opacity: 1;
    visibility: visible;
}

.pane__title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.pane__description {
    line-height: 1.7;
    color: var(--text-secondary-color);
}

.pane__visual img {
    border-radius: 1rem;
    object-fit: cover;
    width: 100%;
    height: 100%;
    max-height: 350px;
}

/* --- Адаптивность для табов --- */
@media (max-width: 992px) {
    .tabs-component {
        grid-template-columns: 200px 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .tabs-section {
        padding: 4rem 0;
    }
    
    .tabs-component {
        grid-template-columns: 1fr;
    }

    .tabs-component__nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 1rem; /* Для тени и скроллбара */
    }

    .tabs-component__button {
        flex-shrink: 0; /* Чтобы кнопки не сжимались */
    }
    
    .tabs-component__pane {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .pane__text {
        order: 2; /* Текст под картинкой */
    }

    .pane__visual {
        order: 1;
    }
}

/* style.css */

/* --- Секция с аккордеоном --- */
.accordion-section {
    padding: 6rem 0;
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid var(--surface-color);
}

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

.accordion__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.5rem 1rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    color: var(--text-color);
}

.accordion__title {
    font-size: 1.2rem;
    font-weight: 500;
    font-family: var(--font-headings);
}

.accordion__icon {
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}

.accordion__content {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out;
}

.accordion__text {
    padding: 0 1rem 1.5rem;
    color: var(--text-secondary-color);
    line-height: 1.7;
}

/* Стили для активного состояния */
.accordion__item.accordion__item--active .accordion__icon {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.accordion__item.accordion__item--active .accordion__header {
    color: var(--primary-color);
}

.accordion__item.accordion__item--active .accordion__content {
    /* Значение должно быть достаточным, чтобы вместить контент */
    max-height: 200px; 
    padding-top: 0;
}


/* --- Адаптивность для аккордеона --- */
@media (max-width: 768px) {
    .accordion-section {
        padding: 4rem 0;
    }
    .accordion__title {
        font-size: 1.1rem;
    }
}

/* style.css */

/* --- Секция "Обучение" --- */
.learning-section {
    padding: 6rem 0;
    background-color: var(--surface-color); /* Снова меняем фон для визуального разделения */
}

.learning-section__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.learning-section__image {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    object-fit: cover;
}

.learning-section__title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.learning-section__description {
    color: var(--text-secondary-color);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.learning-section__list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.learning-section__item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.learning-section__item i {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--primary-color);
    margin-top: 2px;
}

.learning-section__item span {
    line-height: 1.6;
}

/* --- Адаптивность для секции "Обучение" --- */
@media (max-width: 992px) {
    .learning-section__grid {
        gap: 2rem;
    }
    .learning-section__title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .learning-section {
        padding: 4rem 0;
    }
    .learning-section__grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .learning-section__content {
        text-align: center;
    }
    .learning-section__item {
        text-align: left;
    }
}

/* style.css */

/* --- Секция контактов --- */
.contact-section {
    padding: 6rem 0;
}

.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--surface-color);
    padding: 3rem;
    border-radius: 1rem;
    position: relative;
    overflow: hidden;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-group__label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary-color);
}

.form-group__input {
    width: 100%;
    padding: 0.9rem 1rem;
    background-color: var(--background-color);
    border: 1px solid transparent;
    border-radius: 0.5rem;
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group__input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(187, 134, 252, 0.25);
}

.form-group--captcha {
    align-items: flex-start;
}

#captcha-label {
    font-style: italic;
}

.form-group--checkbox {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.form-group--checkbox label {
    color: var(--text-secondary-color);
}

.form-group--checkbox input[type="checkbox"] {
    width: 1.25em;
    height: 1.25em;
    accent-color: var(--primary-color);
}

.contact-form__button {
    margin-top: 1rem;
    width: 100%;
}

.form-error-message {
    color: #ff8a80; /* A light red for errors */
    text-align: center;
    display: none;
}

/* Сообщение об успехе */
.success-message {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--surface-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.1);
    transition: opacity 0.5s ease, visibility 0.5s ease, transform 0.5s ease;
}

.success-message.success-message--visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.success-message__icon {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.success-message__icon i {
    width: 60px;
    height: 60px;
}

.success-message__title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.success-message__text {
    color: var(--text-secondary-color);
}

/* style.css */

/* --- Cookie Pop-up --- */
.cookie-popup {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    max-width: 500px;
    background-color: var(--surface-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    z-index: 200;
    
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;

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

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

.cookie-popup__text {
    font-size: 0.9rem;
    color: var(--text-secondary-color);
}

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

.cookie-popup__button {
    flex-shrink: 0;
    padding: 0.6rem 1.2rem;
}

@media (max-width: 520px) {
    .cookie-popup {
        flex-direction: column;
        text-align: center;
        bottom: 1rem;
        left: 1rem;
        right: 1rem;
    }
}

/* style.css */

/* --- Стили для служебных текстовых страниц --- */
.pages {
    padding: 4rem 0;
    min-height: 80vh;
}

.pages .container {
    max-width: 800px; /* Делаем контент уже для лучшей читаемости */
}

.pages h1 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.pages h2 {
    font-size: 1.8rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.pages p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary-color);
    margin-bottom: 1.5rem;
}

.pages a {
    color: var(--primary-color);
    text-decoration: underline;
}

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

.pages ul {
    list-style: none;
    margin-bottom: 1.5rem;
    padding-left: 1rem;
}

.pages li {
    font-size: 1.1rem;
    color: var(--text-secondary-color);
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.pages li::before {
    content: '•';
    color: var(--primary-color);
    font-weight: bold;
    display: inline-block; 
    position: absolute;
    left: 0;
}

.pages strong {
    color: var(--text-color);
    font-weight: 500;
}