/* ------------------- */
/* GLOBAL STYLES       */
/* ------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=Poppins:wght@600;700&display=swap');

:root {
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    --color-bg: #111318;
    --color-text: #EAEBEF;
    --color-primary: #8A42D4;
    --color-primary-light: #B48ADD;
    --color-border: #414550;
    --color-surface: #1A1D23;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ------------------- */
/* HEADER              */
/* ------------------- */
.header {
    background-color: rgba(17, 19, 24, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

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

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

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

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

/* ------------------- */
/* FOOTER              */
/* ------------------- */
.footer {
    background-color: var(--color-surface);
    padding: 60px 0 20px;
    border-top: 1px solid var(--color-border);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer__logo {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    display: block;
    margin-bottom: 15px;
}

.footer__tagline {
    font-size: 14px;
    color: var(--color-primary-light);
    max-width: 200px;
}

.footer__title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-text);
}

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

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

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

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

.footer__list--contacts i {
    color: var(--color-primary);
    width: 20px;
    height: 20px;
}

.footer__list--contacts span {
    font-size: 15px;
    opacity: 0.8;
}

.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
    text-align: center;
    font-size: 14px;
    opacity: 0.6;
}
/* ------------------- */
/* BUTTONS             */
/* ------------------- */
.button {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

.button--primary:hover {
    background-color: var(--color-primary-light);
    color: var(--color-bg);
    transform: translateY(-2px);
}

.button--secondary {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.button--secondary:hover {
    background-color: var(--color-border);
    color: var(--color-text);
    transform: translateY(-2px);
}

/* ------------------- */
/* HERO SECTION        */
/* ------------------- */
.hero {
    padding: 80px 0;
    overflow: hidden; /* Важно для анимаций */
}

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

.hero__badge-wrapper {
    margin-bottom: 20px;
    height: 30px; /* Фиксированная высота для предотвращения "прыжков" */
}

.hero__badge {
    display: inline-block;
    padding: 6px 14px;
    background-color: rgba(138, 66, 212, 0.1);
    border: 1px solid rgba(138, 66, 212, 0.3);
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary-light);
    transition: opacity 0.4s ease-in-out;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.5rem); /* Адаптивный размер шрифта */
    line-height: 1.2;
    margin-bottom: 20px;
    max-width: 15ch; /* Ограничение длины строки для читаемости */
}

.hero__description {
    font-size: 1.1rem;
    max-width: 500px;
    opacity: 0.8;
    margin-bottom: 30px;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.hero__visual {
    position: relative;
}

.hero__image-wrapper {
    border-radius: 16px;
    overflow: hidden;
    background-color: var(--color-surface);
    padding: 15px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

/* --- Animation States --- */
.animate-on-load {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-load.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* --- Desktop Styles --- */
@media (min-width: 992px) {
    .hero {
        padding: 100px 0;
    }
    .hero__container {
        grid-template-columns: 1fr 0.8fr;
        text-align: left;
    }
}

/* ------------------- */
/* SECTION HEADER      */
/* ------------------- */
.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 60px;
}

.section-header__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.8rem);
    line-height: 1.2;
    margin-bottom: 15px;
}

.section-header__subtitle {
    font-size: 1.1rem;
    opacity: 0.8;
}


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

.courses__layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.courses__tabs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.courses__tab-button {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 15px 20px;
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 500;
    font-family: var(--font-body);
    cursor: pointer;
    text-align: left;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.courses__tab-button i {
    width: 22px;
    height: 22px;
    color: var(--color-primary-light);
    transition: color 0.3s ease;
}

.courses__tab-button:hover {
    background-color: var(--color-bg);
}

.courses__tab-button.is-active {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
}

.courses__tab-button.is-active i {
    color: var(--color-primary);
}

.courses__content {
    position: relative;
    min-height: 450px;
}

.courses__content-panel {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.courses__content-panel.is-active {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    align-items: center;
}

.courses__image-wrapper {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.courses__image {
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.courses__title {
    font-family: var(--font-heading);
    font-size: 2rem;
    margin-bottom: 15px;
}

.courses__description {
    opacity: 0.8;
    margin-bottom: 25px;
}

.courses__tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.courses__tech-list li {
    padding: 6px 14px;
    background-color: rgba(138, 66, 212, 0.1);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

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

/* --- Desktop Styles --- */
@media (min-width: 768px) {
    .courses__layout {
        grid-template-columns: 250px 1fr;
        gap: 50px;
    }
    .courses__content-panel.is-active {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 992px) {
    .courses__content-panel.is-active {
        grid-template-columns: 1fr 1fr;
        gap: 50px;
    }
}

/* ------------------- */
/* FORMAT SECTION      */
/* ------------------- */
.format {
    padding: 80px 0;
}

.format__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.format__card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.format__card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.format__card-icon {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    background-color: rgba(138, 66, 212, 0.1);
    border-radius: 50%;
    margin-bottom: 25px;
}

.format__card-icon i {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.format__card-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.format__card-description {
    opacity: 0.8;
    font-size: 1rem;
    line-height: 1.7;
}

/* --- Desktop Styles --- */
@media (min-width: 768px) {
    .format__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ------------------- */
/* PROCESS SECTION     */
/* ------------------- */
.process {
    padding: 80px 0;
    background-color: var(--color-surface);
}

.process__timeline {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

/* Линия таймлайна для мобильных */
.process__timeline::before {
    content: '';
    position: absolute;
    top: 25px;
    bottom: 25px;
    left: 24px;
    width: 2px;
    background-color: var(--color-border);
    transform: translateX(-50%);
}

.process__item {
    display: grid;
    grid-template-columns: 50px 1fr;
    align-items: start;
    gap: 20px;
    position: relative;
}

.process__number {
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    z-index: 1; /* Чтобы номер был над линией */
}

.process__item-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.process__item-description {
    opacity: 0.8;
}

/* --- Desktop Styles --- */
@media (min-width: 768px) {
    .process__timeline {
        gap: 0; /* Убираем gap, позиционирование будет точным */
    }

    /* Центральная линия таймлайна */
    .process__timeline::before {
        left: 50%;
    }

    .process__item {
        grid-template-columns: 1fr 50px 1fr;
        gap: 30px;
        align-items: center;
        margin-bottom: 40px; /* Расстояние между элементами */
    }

    .process__number {
        grid-column: 2 / 3; /* Номер всегда во второй колонке */
    }

    .process__content-item {
        grid-column: 3 / 4; /* По умолчанию контент справа */
        text-align: left;
    }

    /* Для четных элементов меняем порядок */
    .process__item:nth-child(even) .process__content-item {
        grid-column: 1 / 2;
        grid-row: 1; /* Убеждаемся, что он в той же строке */
        text-align: right;
    }
}

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

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

.reviews__slider {
    display: flex;
    overflow-x: hidden;
    scroll-behavior: smooth;
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
    scroll-snap-type: x mandatory;
}

.reviews__slider::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.reviews__slide {
    flex: 0 0 100%;
    padding: 0 10px;
    scroll-snap-align: center;
}

.reviews__card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 300px;
}

.reviews__card-text {
    font-size: 1.2rem;
    line-height: 1.6;
    font-style: italic;
    margin-bottom: 30px;
    flex-grow: 1;
}

.reviews__card-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviews__author-photo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.reviews__author-name {
    display: block;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-text);
}

.reviews__author-course {
    display: block;
    font-size: 0.9rem;
    opacity: 0.7;
}

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

.reviews__nav-button:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

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

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

/* --- Desktop Styles --- */
@media (max-width: 900px) {
    .reviews__nav-button--prev {
        left: 0px;
    }
    .reviews__nav-button--next {
        right: 0px;
    }
}
/* ------------------- */
/* CONTACT SECTION     */
/* ------------------- */
.contact {
    padding: 80px 0;
    background-color: var(--color-surface);
}

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

.contact__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.8rem);
    line-height: 1.2;
    margin-bottom: 20px;
}

.contact__description {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-bottom: 30px;
    max-width: 500px;
}

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

.contact__details li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.contact__details i {
    color: var(--color-primary);
}

/* Form Styles */
.contact__form-wrapper {
    background-color: var(--color-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-size: 16px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(138, 66, 212, 0.2);
}

.form-input.is-invalid {
    border-color: #e74c3c;
}

.form-group--checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    opacity: 0.8;
}

.form-group--checkbox input {
    margin-top: 4px;
    accent-color: var(--color-primary);
}

.contact__form button {
    width: 100%;
    padding: 15px;
    font-size: 18px;
}

.form-message {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none;
}

.form-message--error {
    background-color: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    border: 1px solid #e74c3c;
}

.form-message--success {
    background-color: rgba(46, 204, 113, 0.1);
    border: 1px solid #2ecc71;
    text-align: center;
    display: none;
}

.form-message--success h3 {
    font-family: var(--font-heading);
    margin-bottom: 10px;
    color: #2ecc71;
}

/* --- Desktop Styles --- */
@media (min-width: 992px) {
    .contact__layout {
        grid-template-columns: 1fr 1fr;
    }
}

/* ------------------- */
/* COOKIE POPUP        */
/* ------------------- */
.cookie-popup {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 500px;
    background-color: var(--color-surface);
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    transform: translateY(200%);
    transition: transform 0.5s ease-in-out;
    z-index: 200;
}

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

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

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

.cookie-popup__button {
    flex-shrink: 0;
    padding: 8px 20px;
}

@media (max-width: 500px) {
    .cookie-popup {
        flex-direction: column;
        text-align: center;
    }
}

/* ------------------- */
/* STATIC PAGES STYLES */
/* ------------------- */
.pages {
    padding: 80px 0;
}

.pages h1,
.pages h2,
.pages h3 {
    font-family: var(--font-heading);
    color: var(--color-text);
    line-height: 1.3;
}

.pages h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    margin-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 20px;
}

.pages h2 {
    font-size: 1.8rem;
    margin-top: 50px;
    margin-bottom: 20px;
}

.pages h3 {
    font-size: 1.4rem;
    margin-top: 40px;
    margin-bottom: 15px;
}

.pages p,
.pages li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    opacity: 0.9;
    max-width: 80ch; /* Оптимальная длина строки для чтения */
}

.pages p {
    margin-bottom: 20px;
}

.pages ul,
.pages ol {
    margin-bottom: 20px;
    padding-left: 25px;
}

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

.pages a {
    color: var(--color-primary-light);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.pages a:hover {
    color: var(--color-text);
    text-decoration-thickness: 2px;
}

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