/* ==================== GOOGLE FONTS ==================== */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;700&family=Plus+Jakarta+Sans:wght@700&display=swap');

/* ==================== CSS VARIABLES ==================== */
:root {
    --color-bg: #121425;
    --color-bg-panel: #1A1D32;
    --color-primary: #00F5D4;
    --color-text: #F0F0F0;
    --color-text-secondary: #a8a8b3;
    --color-border: #2a2d42;

    --font-family-headings: 'Plus Jakarta Sans', sans-serif;
    --font-family-body: 'Manrope', sans-serif;

    --container-width-lg: 1120px;
    --container-width-md: 960px;
    --container-width-sm: 720px;

    --transition: all 400ms ease;
}

/* ==================== BASE STYLES ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: 0;
    border: 0;
    list-style: none;
    text-decoration: none;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
}

.container {
    width: 90%;
    max-width: var(--container-width-lg);
    margin: 0 auto;
}

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

a {
    color: var(--color-text-secondary);
    transition: var(--transition);
}

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

img {
    display: block;
    width: 100%;
    object-fit: cover;
}

/* ==================== HEADER ==================== */
.header {
    height: 5rem;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(18, 20, 37, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
}

.header__container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

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

.header__nav-link {
    font-size: 0.9rem;
    font-weight: 700;
}

.header__nav-link--cta {
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 0.5rem 1.2rem;
    border-radius: 5px;
    border: 1px solid var(--color-primary);
}

.header__nav-link--cta:hover {
    background: transparent;
    color: var(--color-primary);
}

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

/* ==================== FOOTER ==================== */
.footer {
    padding-top: 5rem;
    background: var(--color-bg-panel);
    margin-top: 6rem; /* Placeholder margin */
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    padding-bottom: 3rem;
}

.footer__column--logo {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
}

.footer__logo {
    font-family: var(--font-family-headings);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-text);
}

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

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

.footer__title {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.footer__list li {
    margin-bottom: 0.75rem;
}

.footer__link {
    font-size: 0.9rem;
}

.footer__list--contact li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--color-text-secondary);
}

.footer__list--contact i {
    color: var(--color-primary);
    width: 18px;
    height: 18px;
}

.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* ==================== MEDIA QUERIES (TABLETS) ==================== */
@media screen and (max-width: 1024px) {
    .header__nav {
        display: none; /* Будет реализовано позже с JS */
    }

    .header__burger-btn {
        display: block;
    }

    .footer__container {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

/* ==================== MEDIA QUERIES (MOBILES) ==================== */
@media screen and (max-width: 600px) {
    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__column--logo, .footer__list--contact li {
        align-items: center;
        justify-content: center;
    }
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-weight: 700;
    border-radius: 5px;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    font-size: 0.9rem;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: transparent;
    color: var(--color-primary);
}


/* ==================== HERO ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 5rem; /* Отступ от хедера */
    position: relative;
    overflow: hidden;
}

.hero__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    z-index: 2;
}

.hero__title {
    font-size: 3.5rem;
    line-height: 1.1;
    max-width: 800px;
}
/* Стили для анимации текста */
.hero__title span {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px) scale(0.9);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.hero__title span.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.hero__subtitle {
    max-width: 600px;
    color: var(--color-text-secondary);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.8s ease 0.5s, transform 0.8s ease 0.5s;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.8s ease 0.7s, transform 0.8s ease 0.7s;
}

/* Элементы, которые анимируются после загрузки JS */
body.loaded .hero__subtitle,
body.loaded .hero__actions {
    opacity: 1;
    transform: translateY(0);
}


/* Анимированный фон с частицами */
@keyframes move {
    100% {
        transform: translate3d(0, 0, 1px) rotate(360deg);
    }
}

.hero__particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}

.hero__particles span {
    width: 20vmin;
    height: 20vmin;
    border-radius: 20vmin;
    backface-visibility: hidden;
    position: absolute;
    animation: move;
    animation-duration: 45s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}
.hero__particles span:nth-child(1) { height: 10vmin; width: 10vmin; left: 88%; top: 41%; animation-duration: 12s; background-color: rgba(0, 245, 212, 0.1); }
.hero__particles span:nth-child(2) { height: 15vmin; width: 15vmin; left: 3%; top: 38%; animation-duration: 18s; background-color: rgba(0, 245, 212, 0.15); }
.hero__particles span:nth-child(3) { height: 12vmin; width: 12vmin; left: 70%; top: 80%; animation-duration: 25s; background-color: rgba(0, 245, 212, 0.12); }
.hero__particles span:nth-child(4) { height: 8vmin; width: 8vmin; left: 10%; top: 85%; animation-duration: 32s; background-color: rgba(0, 245, 212, 0.1); }
.hero__particles span:nth-child(5) { height: 18vmin; width: 18vmin; left: 40%; top: 10%; animation-duration: 22s; background-color: rgba(0, 245, 212, 0.2); }
.hero__particles span:nth-child(6) { height: 6vmin; width: 6vmin; left: 80%; top: 15%; animation-duration: 40s; background-color: rgba(0, 245, 212, 0.1); }
/* Дополнительные для плотности */
.hero__particles span:nth-child(7) { height: 5vmin; width: 5vmin; left: 50%; top: 50%; animation-duration: 50s; background-color: rgba(0, 245, 212, 0.1); }
.hero__particles span:nth-child(8) { height: 22vmin; width: 22vmin; left: 15%; top: 60%; animation-duration: 38s; background-color: rgba(0, 245, 212, 0.15); }
.hero__particles span:nth-child(9) { height: 9vmin; width: 9vmin; left: 90%; top: 90%; animation-duration: 28s; background-color: rgba(0, 245, 212, 0.1); }
.hero__particles span:nth-child(10) { height: 14vmin; width: 14vmin; left: 35%; top: 70%; animation-duration: 19s; background-color: rgba(0, 245, 212, 0.12); }
.hero__particles span:nth-child(11) { height: 7vmin; width: 7vmin; left: 65%; top: 30%; animation-duration: 33s; background-color: rgba(0, 245, 212, 0.1); }
.hero__particles span:nth-child(12) { height: 16vmin; width: 16vmin; left: 5%; top: 5%; animation-duration: 26s; background-color: rgba(0, 245, 212, 0.18); }

/* ==================== GENERIC STYLES FOR SECTIONS & CARDS ==================== */
.section {
    padding: 6rem 0;
}

.section__header {
    text-align: center;
    margin-bottom: 3rem;
}

.section__title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.section__subtitle {
    max-width: 600px;
    margin: 0 auto;
    color: var(--color-text-secondary);
}

.card {
    background: var(--color-bg-panel);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    height: 100%; /* Для одинаковой высоты карточек в гриде */
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: 5px;
    margin-bottom: 1.5rem;
}

.card__icon i {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.card__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

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


/* ==================== BIOTECH SECTION ==================== */
#biotech {
    background-color: var(--color-bg); /* Можно менять фон для чередования секций */
}

.biotech__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* Адаптивность для карточек */
@media screen and (max-width: 1024px) {
    .biotech__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 600px) {
    .section {
        padding: 4rem 0;
    }
    .section__title {
        font-size: 2rem;
    }
    .biotech__grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== AI & ROBOTICS SECTION ==================== */
#ai {
    background: var(--color-bg-panel);
    overflow-x: hidden; /* Предотвращаем горизонтальный скролл из-за AOS анимаций */
}

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

.ai__image {
    border-radius: 10px;
    overflow: hidden;
}

.ai__image img {
    height: 100%;
    object-fit: cover;
}

.ai__feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.ai__feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.ai__feature-item i {
    color: var(--color-primary);
    min-width: 24px;
    margin-top: 5px;
}

.ai__feature-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    font-family: var(--font-family-body);
    font-weight: 700;
}

.ai__feature-item p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Адаптивность для секции AI */
@media screen and (max-width: 1024px) {
    .ai__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media screen and (max-width: 600px) {
    .section__header, .section__header p {
        text-align: center !important; /* !important чтобы переопределить инлайн стиль */
        margin-left: auto !important;
        margin-right: auto !important;
    }

    .ai__container {
        gap: 3rem;
    }

    .ai__content {
        /* Меняем порядок на мобильных: сначала картинка, потом текст */
        order: 2; 
    }
    
    .ai__image {
        order: 1;
    }
}

/* -- ЗАМЕНИТЬ СТАРЫЙ КОД ЭТИМ -- */
/* ==================== FEATURE LIST (Generic) ==================== */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-item i {
    color: var(--color-primary);
    min-width: 24px;
    margin-top: 5px;
}

.feature-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    font-family: var(--font-family-body);
    font-weight: 700;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* -- ДОБАВИТЬ НОВЫЙ КОД -- */
/* ==================== GREEN ENERGY SECTION ==================== */
#green-energy {
    background: var(--color-bg);
    overflow-x: hidden;
}

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

.green-energy__image {
    border-radius: 10px;
    overflow: hidden;
}

.green-energy__image img {
    height: 100%;
    object-fit: cover;
}

/* Адаптивность для секции Green Energy */
@media screen and (max-width: 1024px) {
    .green-energy__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* ==================== ABOUT SECTION (ACCORDION) ==================== */
#about {
    background: var(--color-bg);
}

.about__accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion__item {
    background: var(--color-bg-panel);
    border-radius: 10px;
    border: 1px solid var(--color-border);
    overflow: hidden; /* Важно для анимации max-height */
}

.accordion__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
}

.accordion__header h4 {
    font-size: 1.1rem;
    font-weight: 700;
}

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

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

.accordion__content p {
    padding: 0 1.5rem 1.5rem;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* Стили для активного элемента аккордеона */
.accordion__item.active .accordion__header i {
    transform: rotate(45deg);
}

.accordion__item.active .accordion__content {
    max-height: 200px; /* Достаточно большое значение для контента */
}

/* ==================== CONTACT SECTION ==================== */
#contact {
    padding-bottom: 6rem;
    background: var(--color-bg-panel);
}

.contact__form {
    max-width: 700px;
    margin: 3rem auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.form__grid {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media screen and (min-width: 768px) {
    .form__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.form__group input[type="text"],
.form__group input[type="email"],
.form__group input[type="tel"],
.form__group input[type="number"] {
    width: 100%;
    padding: 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 5px;
    color: var(--color-text);
    font-family: var(--font-family-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form__group input:focus {
    border-color: var(--color-primary);
}

.form__group--captcha {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--color-bg);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: 1px solid var(--color-border);
}

.form__group--captcha label {
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.form__group--captcha input {
    background: transparent;
    border: none;
    width: 60px;
    font-weight: 700;
}

.form__group--checkbox {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.form__group--checkbox label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

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

.form__message {
    width: 100%;
    padding: 1rem;
    border-radius: 5px;
    text-align: center;
    display: none; /* Скрыто по умолчанию */
}

.form__message--success {
    background-color: rgba(0, 245, 212, 0.1);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    display: block; /* Показываем при успехе */
}

.form__message--error {
    background-color: rgba(255, 71, 87, 0.1);
    border: 1px solid #FF4757;
    color: #FF4757;
    display: block; /* Показываем при ошибке */
}

/* ==================== COOKIE POPUP ==================== */
.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-bg-panel);
    border-top: 1px solid var(--color-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    z-index: 200;
    transform: translateY(0);
    transition: transform 0.5s ease;
}

.cookie-popup--hidden {
    transform: translateY(100%);
}

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

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

.cookie-popup__btn {
    padding: 0.5rem 1.5rem;
    white-space: nowrap;
}


/* ==================== STYLES FOR POLICY PAGES ==================== */
.pages .container {
    padding-top: 8rem; /* Отступ от фиксированного хедера */
    padding-bottom: 4rem;
    max-width: 800px; /* Делаем текстовый блок уже для читабельности */
}

.pages h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}

.pages h2 {
    font-size: 1.8rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.pages p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.pages ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.pages li {
    list-style-type: disc;
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
    color: var(--color-text-secondary);
}

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

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