/* GLOBAL STYLES */
:root {
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    --color-background: #0D0B14;
    --color-text: #EDEAF6;
    --color-primary: #8A3FFC;
    --color-secondary: #2C283E;
    --color-white: #FFFFFF;

    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

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

ul {
    list-style: none;
}

.button {
    display: inline-block;
    padding: 12px 28px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
    font-weight: 500;
    font-family: var(--font-heading);
    text-align: center;
    border: 2px solid var(--color-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* HEADER */
.header {
    background-color: rgba(13, 11, 20, 0.8);
    border-bottom: 1px solid var(--color-secondary);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
}

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

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

.nav__list {
    display: flex;
    gap: 30px;
}

.nav__link {
    color: var(--color-text);
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}
.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}
.nav__link:hover::after {
    width: 100%;
}

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

/* FOOTER */
.footer {
    background-color: var(--color-secondary);
    padding: 60px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 40px;
    margin-bottom: 40px;
}

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

.footer__description {
    max-width: 300px;
    color: var(--color-text);
    opacity: 0.8;
}

.footer__title {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__link {
    color: var(--color-text);
    opacity: 0.8;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.footer__link:hover {
    opacity: 1;
    color: var(--color-primary);
}

.footer__icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
}

.footer__copyright {
    text-align: center;
    font-size: 14px;
    opacity: 0.6;
}


/* ADAPTIVE STYLES (Mobile-first) */
@media (max-width: 992px) {
    .footer__container {
        grid-template-columns: 1fr 1fr;
    }
    .footer__column--brand {
        grid-column: 1 / -1;
    }
}


@media (max-width: 768px) {
    .header__nav {
        display: none; /* Будемо реалізовувати логіку мобільного меню пізніше */
    }
    .header__cta {
        display: none; /* Ховаємо кнопку на мобільних */
    }
    .header__burger {
        display: block;
    }
    
    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__description {
        margin: 0 auto;
    }
    
    .footer__list--contacts .footer__item {
        justify-content: center;
    }
}

/* HERO SECTION */
.hero {
    position: relative;
    padding-top: calc(var(--header-height) + 100px);
    padding-bottom: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.5;
}

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

.hero__title {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero__subtitle {
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 40px;
    max-width: 550px;
}

.hero__cta {
    padding: 16px 36px;
    font-size: 18px;
}

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

.hero__image {
    max-width: 100%;
    border-radius: 20px;
    animation: float 6s ease-in-out infinite;
}

/* Анимация левитации для изображения */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* ADAPTIVE STYLES for HERO */
@media (max-width: 992px) {
    .hero__title {
        font-size: 36px;
    }
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero__visual {
        margin-top: 40px;
    }
    .hero__image {
        max-width: 70%;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + 60px);
        padding-bottom: 60px;
    }
    .hero__title {
        font-size: 28px;
    }
    .hero__subtitle {
        font-size: 16px;
    }
    .hero__image {
        max-width: 80%;
    }
}

/* PRINCIPLES SECTION */
.principles {
    padding: 100px 0;
    background-color: var(--color-background); /* Or slightly different shade if needed */
}

.principles__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.principles__tagline {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--color-secondary);
    border-radius: 20px;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 14px;
}

.principles__title {
    font-size: 42px;
    margin-bottom: 15px;
}

.principles__subtitle {
    font-size: 18px;
    opacity: 0.8;
}

.principles__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background-color: var(--color-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.card__icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--color-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 25px;
}

.card__icon {
    width: 30px;
    height: 30px;
    color: var(--color-white);
}

.card__title {
    font-size: 22px;
    margin-bottom: 10px;
}

.card__text {
    opacity: 0.8;
}


/* ADAPTIVE STYLES for PRINCIPLES */
@media (max-width: 992px) {
    .principles__grid {
        grid-template-columns: 1fr;
    }
    .principles__title {
        font-size: 34px;
    }
}

@media (max-width: 768px) {
    .principles {
        padding: 60px 0;
    }
    .principles__title {
        font-size: 28px;
    }
    .principles__subtitle {
        font-size: 16px;
    }
}

/* USE CASES SECTION */
.use-cases {
    padding: 100px 0;
}

.use-cases__container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.use-cases__tagline {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--color-secondary);
    border-radius: 20px;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 14px;
}

.use-cases__title {
    font-size: 42px;
    margin-bottom: 15px;
}

.use-cases__subtitle {
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 40px;
}

.use-cases__tabs {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.use-cases__tab-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 100%;
    padding: 15px 20px;
    background-color: var(--color-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--color-text);
    font-size: 18px;
    font-family: var(--font-heading);
    cursor: pointer;
    text-align: left;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.use-cases__tab-btn:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.use-cases__tab-btn--active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.use-cases__tab-icon {
    width: 24px;
    height: 24px;
}

.use-cases__content-item {
    display: none;
    flex-direction: column;
    animation: fadeIn 0.5s ease;
}

.use-cases__content-item--active {
    display: flex;
}

.use-cases__image {
    width: 100%;
    border-radius: 16px;
    margin-bottom: 20px;
    object-fit: cover;
    aspect-ratio: 16/10;
}

.use-cases__text-content h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.use-cases__text-content p {
    opacity: 0.8;
}

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

/* ADAPTIVE STYLES for USE CASES */
@media (max-width: 992px) {
    .use-cases__container {
        grid-template-columns: 1fr;
    }
    .use-cases__info {
        text-align: center;
    }
    .use-cases__tabs {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .use-cases {
        padding: 60px 0;
    }
    .use-cases__title {
        font-size: 28px;
    }
    .use-cases__subtitle {
        font-size: 16px;
    }
    .use-cases__tabs {
        flex-direction: column;
    }
    .use-cases__tab-btn {
        font-size: 16px;
    }
}

/* TOOLS SECTION */
.tools {
    padding: 100px 0;
    overflow-x: hidden;
}

.tools__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.tools__tagline {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--color-secondary);
    border-radius: 20px;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 14px;
}

.tools__title {
    font-size: 42px;
    margin-bottom: 15px;
}

.tools__subtitle {
    font-size: 18px;
    opacity: 0.8;
}

.tools__scroller {
    width: 100%;
    -webkit-mask: linear-gradient(90deg, transparent, white 20%, white 80%, transparent);
    mask: linear-gradient(90deg, transparent, white 20%, white 80%, transparent);
}

.tools__scroller-inner {
    display: flex;
    gap: 30px;
    width: max-content;
    animation: scroll 30s linear infinite;
}

.tools__item {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100px;
    width: 200px;
    background-color: var(--color-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--color-text);
    font-size: 20px;
    font-family: var(--font-heading);
    transition: background-color 0.3s ease;
}

.tools__scroller-inner:hover {
    animation-play-state: paused;
}

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

@keyframes scroll {
    to {
        transform: translate(calc(-50% - 15px)); /* (item_width + gap) * num_items / 2 */
    }
}


/* ADAPTIVE STYLES for TOOLS */
@media (max-width: 768px) {
    .tools {
        padding: 60px 0;
    }
    .tools__title {
        font-size: 28px;
    }
    .tools__subtitle {
        font-size: 16px;
    }
    .tools__item {
        width: 150px;
        font-size: 16px;
    }
}

/* START SECTION */
.start {
    padding: 100px 0;
    background-color: var(--color-secondary);
    background-image: radial-gradient(circle at center, rgba(138, 63, 252, 0.15), transparent 60%);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.start__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 750px;
}

.start__title {
    font-size: 42px;
    margin-bottom: 20px;
}

.start__subtitle {
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 40px;
}

.button--large {
    padding: 18px 40px;
    font-size: 20px;
    margin-bottom: 20px;
}

.start__disclaimer {
    font-size: 14px;
    opacity: 0.6;
}


/* ADAPTIVE STYLES for START */
@media (max-width: 768px) {
    .start {
        padding: 60px 0;
    }
    .start__title {
        font-size: 28px;
    }
    .start__subtitle {
        font-size: 16px;
    }
    .button--large {
        padding: 16px 32px;
        font-size: 18px;
    }
}

/* CONTACT SECTION */
.contact {
    padding: 100px 0;
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.contact__title {
    font-size: 42px;
    margin-bottom: 20px;
}

.contact__subtitle {
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 40px;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact__detail-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact__icon {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 5px;
}

.contact__detail-item h4 {
    font-size: 20px;
    margin-bottom: 5px;
}
.contact__detail-item p {
    opacity: 0.7;
}

.contact__form-wrapper {
    background-color: var(--color-secondary);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.form-group__label {
    margin-bottom: 8px;
    font-size: 14px;
    opacity: 0.8;
}

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

.form-group__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(138, 63, 252, 0.2);
}

.captcha-group .form-group__label span {
    font-weight: bold;
    color: var(--color-primary);
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

.checkbox-group__input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.checkbox-group__label {
    margin-bottom: 0;
    font-size: 14px;
}

.button--full {
    width: 100%;
    padding: 16px;
    font-size: 18px;
    margin-top: 10px;
}

.form-success {
    display: none; /* Initially hidden */
    text-align: center;
    padding: 40px;
    border: 1px solid var(--color-primary);
    border-radius: 16px;
}

.form-success__icon {
    width: 60px;
    height: 60px;
    color: var(--color-primary);
    margin-bottom: 20px;
}
.form-success__title {
    font-size: 24px;
    margin-bottom: 10px;
}

/* ADAPTIVE STYLES for CONTACT */
@media (max-width: 992px) {
    .contact__container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    .contact__info {
        text-align: center;
    }
    .contact__details {
        align-items: center;
    }
    .contact__detail-item {
        text-align: left;
        max-width: 400px;
    }
}
@media (max-width: 768px) {
    .contact {
        padding: 60px 0;
    }
    .contact__title {
        font-size: 28px;
    }
}

/* COOKIE POP-UP */
.cookie-popup {
    position: fixed;
    bottom: -100%; /* Initially hidden */
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 800px;
    background-color: var(--color-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    z-index: 2000;
    transition: bottom 0.5s ease-in-out;
}

.cookie-popup--show {
    bottom: 20px;
}

.cookie-popup__text {
    font-size: 15px;
    opacity: 0.9;
}

.cookie-popup__link {
    text-decoration: underline;
}

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

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

/* GENERIC PAGES STYLES (Privacy, Terms, etc.) */
.pages {
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 60px;
}

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

.pages h1 {
    font-size: 42px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--color-secondary);
    padding-bottom: 15px;
}

.pages h2 {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 20px;
}

.pages p {
    margin-bottom: 20px;
    line-height: 1.7;
    opacity: 0.9;
}

.pages a {
    text-decoration: underline;
}

.pages ul {
    list-style: disc;
    padding-left: 25px;
    margin-bottom: 20px;
}

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

.pages strong {
    color: var(--color-white);
}

@media (max-width: 768px) {
    .pages h1 {
        font-size: 32px;
    }
    .pages h2 {
        font-size: 24px;
    }
}