/*
 * Google Fonts:
 * font-family: 'Inter', sans-serif;
 * font-family: 'Poppins', sans-serif;
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=Poppins:wght@600;700&display=swap');

/*
 * CSS Variables
 */
:root {
    --color-background: #111827;
    --color-text: #E5E7EB;
    --color-text-secondary: #9CA3AF;
    --color-primary: #34D399; /* Mint */
    --color-secondary: #4F46E5; /* Indigo */
    --color-surface: #1F2937;
    --color-border: #374151;

    --font-family-body: 'Inter', sans-serif;
    --font-family-heading: 'Poppins', sans-serif;
}

/*
 * Base & Reset
 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

ul {
    list-style: none;
}

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

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

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

.container {
    max-width: 1240px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

/*
 * ==================== HEADER ====================
 */
.header {
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 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-family-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
}
.header__logo:hover {
    color: #fff;
}


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

.header__nav-link {
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    padding: 0.25rem 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;
}

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

.header__menu-button {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
}

/*
 * ==================== FOOTER ====================
 */
.footer {
    background-color: var(--color-surface);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-border);
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer__logo {
    font-family: var(--font-family-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    display: inline-block;
    margin-bottom: 1rem;
}

.footer__description {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    max-width: 300px;
}

.footer__title {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

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

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

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

.footer__contact-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--color-text-secondary);
}

.footer__contact-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    color: var(--color-primary);
}

.footer__text {
    font-size: 0.95rem;
}

.footer__bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

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

/*
 * ==================== RESPONSIVENESS (Mobile-First) ====================
 */
@media (max-width: 768px) {
    .header__nav {
        display: none; /* Will be handled by JS for mobile menu */
    }
    .header__menu-button {
        display: block;
    }
}

/* ... (существующие стили) ... */

/*
 * ==================== BUTTON ====================
 */
.button {
    display: inline-block;
    padding: 0.8rem 2.5rem;
    background-color: var(--color-primary);
    color: var(--color-background);
    font-family: var(--font-family-heading);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid var(--color-primary);
    transition: all 0.3s ease;
    cursor: pointer;
}

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


/*
 * ==================== HERO ====================
 */
.hero {
    position: relative;
    height: 90vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

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

.hero__container {
    position: relative;
    z-index: 2;
}

.hero__content {
    max-width: 800px;
    margin: 0 auto;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    /* Скрываем для анимации */
    opacity: 0;
    transform: translateY(30px);
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    /* Скрываем для анимации */
    opacity: 0;
    transform: translateY(30px);
}

.hero__cta {
    /* Скрываем для анимации */
    opacity: 0;
    transform: translateY(30px);
}


/*
 * ==================== FOOTER ====================
 */
/* ... (существующие стили футера) ... */

/*
 * ==================== RESPONSIVENESS (Mobile-First) ====================
 */

 @media (max-width: 768px) {
    /* ... (существующие медиа-запросы) ... */
    
    .hero {
        height: 80vh;
        text-align: left;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }
}

/*
 * ==================== GENERIC SECTION STYLES ====================
 */
.section {
    padding: 6rem 0;
}

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

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

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

/*
 * ==================== PROCESS SECTION ====================
 */
.process__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.process__card {
    background-color: var(--color-surface);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    
    /* Начальное состояние для анимации */
    opacity: 0;
    transform: translateY(40px);
}

.process__card.is-visible {
    opacity: 1;
    transform: translateY(0px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.process__card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.2);
}

.process__card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.process__card-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
}

.process__card-step {
    font-family: var(--font-family-heading);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.05);
}

.process__card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.process__card-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

/*
 * ==================== RESPONSIVENESS (Mobile-First) ====================
 */
@media (max-width: 768px) {
    /* ... (существующие медиа-запросы) ... */
    
    .section {
        padding: 4rem 0;
    }

    .section__title {
        font-size: 2rem;
    }
}

/*
 * ==================== TECH SECTION (TABS) ====================
 */
.tech__tabs-container {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 3rem;
    align-items: flex-start;
}

.tech__tabs-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tech__tab-button {
    width: 100%;
    padding: 1rem 1.5rem;
    font-family: var(--font-family-body);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
}

.tech__tab-button:hover {
    background-color: var(--color-surface);
    color: var(--color-text);
}

.tech__tab-button--active {
    color: var(--color-primary);
    background-color: rgba(52, 211, 153, 0.1);
    border-color: rgba(52, 211, 153, 0.3);
    font-weight: 600;
}

.tech__content-panel {
    display: none; /* Hidden by default */
    flex-direction: column;
    padding: 2rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    animation: fadeIn 0.5s ease;
}

.tech__content-panel--active {
    display: flex; /* Shown when active */
}

.tech__panel-icon {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.tech__panel-title {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

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

/* Fade-in animation for panels */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/*
 * ==================== RESPONSIVENESS (Mobile-First) ====================
 */
@media (max-width: 992px) {
    .tech__tabs-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .tech__tabs-list {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 1rem; /* For scrollbar */
    }
    .tech__tab-button {
        white-space: nowrap;
    }
}

/*
 * ==================== GENERIC ANIMATION CLASS ====================
 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/*
 * ==================== USE CASES SECTION ====================
 */
.use-cases__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.use-cases__card {
    position: relative;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    color: #fff;
    cursor: pointer;
}

.use-cases__card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 0.4s ease-out;
}

.use-cases__card:hover .use-cases__card-image {
    transform: scale(1.05);
}

.use-cases__card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 20%, rgba(0,0,0,0) 60%);
    transition: background 0.3s ease;
}

.use-cases__card:hover .use-cases__card-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.9) 30%, rgba(0,0,0,0.1) 70%);
}

.use-cases__card-content {
    position: relative;
    z-index: 2;
    height: 100%;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.use-cases__card-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-primary);
    color: var(--color-background);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    align-self: flex-start; /* Tag stays at the start */
}

.use-cases__card-title {
    font-size: 1.5rem;
    line-height: 1.4;
}

/*
 * ==================== FAQ SECTION (ACCORDION) ====================
 */
.faq__accordion {
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid var(--color-border);
}

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

.faq__question {
    width: 100%;
    padding: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-family: var(--font-family-body);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-text);
    background: none;
    border: none;
    cursor: pointer;
}

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

.faq__icon {
    flex-shrink: 0;
    margin-left: 1rem;
    width: 24px;
    height: 24px;
    transition: transform 0.3s ease;
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.faq__answer p {
    padding-bottom: 1.5rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Active state for accordion item */
.faq__item.active .faq__icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

/*
 * ==================== CONTACT SECTION ====================
 */
.contact__form {
    max-width: 700px;
    margin: 0 auto;
    display: grid;
    gap: 1.5rem;
}

.contact__form-group {
    position: relative;
}

.contact__form-input {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact__form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.contact__form-label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    padding: 0 0.25rem;
    background-color: var(--color-surface);
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
    pointer-events: none;
}

/* Эффект "плавающего" лейбла */
.contact__form-input:focus ~ .contact__form-label,
.contact__form-input:not(:placeholder-shown) ~ .contact__form-label {
    top: -0.75rem;
    left: 0.75rem;
    font-size: 0.8rem;
    color: var(--color-primary);
}

.contact__form-group--captcha {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

/* Кастомный чекбокс */
.contact__form-group--checkbox {
    display: flex;
    align-items: center;
}

.contact__form-checkbox-input {
    opacity: 0;
    position: absolute;
}

.contact__form-checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}
.contact__form-checkbox-label a {
    color: var(--color-primary);
    text-decoration: underline;
}

.contact__custom-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    margin-right: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.contact__custom-checkbox::after {
    content: '✔';
    color: #fff;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.contact__form-checkbox-input:checked + .contact__form-checkbox-label .contact__custom-checkbox {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.contact__form-checkbox-input:checked + .contact__form-checkbox-label .contact__custom-checkbox::after {
    opacity: 1;
}

.contact__form-button {
    width: 100%;
    padding: 1rem;
}

.contact__message {
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    display: none; /* Скрыто по умолчанию */
}
.contact__message--success {
    background-color: rgba(52, 211, 153, 0.1);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}
.contact__message--error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #F87171;
    border: 1px solid #F87171;
}

/*
 * ==================== COOKIE POPUP ====================
 */
.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    z-index: 200;
    transform: translateY(0);
    transition: transform 0.4s ease-out;
}

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

.cookie-popup__text {
    color: var(--color-text-secondary);
}

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

.cookie-popup__button {
    flex-shrink: 0; /* Чтобы кнопка не сжималась */
    padding: 0.6rem 1.5rem;
}

@media (max-width: 768px) {
    .cookie-popup {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}
/*
 * ==================== GENERIC CONTENT PAGES (privacy, terms, etc.) ====================
 */
.pages {
    padding: 4rem 0;
}

.pages .container {
    max-width: 800px;
}

.pages h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--color-primary);
}

.pages h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

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

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

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

.pages ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 1rem;
}

.pages li {
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

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