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

/* ==================== CSS VARIABLES ==================== */
:root {
  --header-height: 5rem;

  /* Colors */
  --color-background: #0D0D0D;
  --color-surface: #1A1A1A;
  --color-primary: #4A90E2;
  --color-primary-hover: #3a75b8;
  --color-text-primary: #F5F5F5;
  --color-text-secondary: #888888;
  --color-border: #2a2a2a;

  /* Fonts */
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Jost', sans-serif;

  --h1-font-size: 3.5rem;
  --h2-font-size: 2.25rem;
  --h3-font-size: 1.5rem;
  --normal-font-size: 1rem;
  --small-font-size: 0.875rem;

  /* Font weight */
  --font-regular: 400;
  --font-medium: 500;
  --font-bold: 700;

  /* Margins */
  --mb-0-5: 0.5rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;

  /* z-index */
  --z-tooltip: 10;
  --z-fixed: 100;
}

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

html {
  scroll-behavior: smooth;
}

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

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* ==================== REUSABLE CSS CLASSES ==================== */
.container {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

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

.header__container {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: var(--font-bold);
  color: var(--color-primary);
  transition: color 0.3s;
}
.header__logo:hover {
  color: var(--color-primary-hover);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.header__nav-link {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  position: relative;
  transition: color 0.3s;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease-out;
}

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

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

.header__nav-link--button {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  transition: background-color 0.3s;
}
.header__nav-link--button:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-text-primary);
}
.header__nav-link--button::after {
    display: none;
}


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

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

.footer__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  padding-bottom: 3rem;
}

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

.footer__description {
  color: var(--color-text-secondary);
  font-size: var(--small-font-size);
  max-width: 250px;
}

.footer__title {
  font-size: 1.25rem;
  margin-bottom: var(--mb-1-5);
}

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

.footer__link {
  color: var(--color-text-secondary);
  transition: color 0.3s, padding-left 0.3s;
  font-size: var(--normal-font-size);
}

.footer__link:hover {
  color: var(--color-primary);
  padding-left: 0.5rem;
}

.footer__list--contacts li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-secondary);
}

.footer__list--contacts .lucide {
    color: var(--color-primary);
    flex-shrink: 0;
}

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


/* ==================== MEDIA QUERIES ==================== */
@media screen and (max-width: 768px) {
    .header__nav {
        display: none; /* Hide nav on mobile for now */
    }
    .header__burger-menu {
        display: block; /* Show burger menu */
    }
}

/* ==================== REUSABLE CSS CLASSES (Additions) ==================== */
.button {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-text-primary);
    padding: 1rem 2rem;
    border-radius: 2.5rem;
    font-weight: var(--font-medium);
    transition: all 0.3s ease;
    border: 2px solid var(--color-primary);
}

.button:hover {
    background-color: transparent;
    color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.2);
}

.button--flex {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.button__icon {
    transition: transform 0.3s ease;
}

.button:hover .button__icon {
    transform: translateX(5px);
}

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

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

.hero__title {
    font-size: var(--h1-font-size);
    line-height: 1.2;
    margin-bottom: var(--mb-1-5);
    font-weight: var(--font-bold);
    font-family: var(--font-heading);
}

.hero__title {
    /* Добавляем небольшой градиент для акцента */
    background: linear-gradient(90deg, var(--color-text-primary), #a7c5e6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}


.hero__description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--mb-2-5);
    max-width: 500px;
}

.hero__description strong {
    color: var(--color-text-primary);
    font-weight: var(--font-medium);
}

.hero__animation-area {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 400px;
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__image-fallback {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    opacity: 0.1; /* Фоновое изображение будет полупрозрачным */
}

/* ==================== MEDIA QUERIES (Hero) ==================== */
@media screen and (max-width: 992px) {
    :root {
        --h1-font-size: 2.75rem;
    }
    .hero__container {
        gap: 2rem;
    }
}


@media screen and (max-width: 768px) {
    .hero {
        padding-top: calc(var(--header-height) + 2rem);
        min-height: auto;
        padding-bottom: 4rem;
        text-align: center;
    }
    .hero__container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero__description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__animation-area {
        grid-row: 1; /* Анимация будет сверху на мобильных */
        min-height: 300px;
    }
}

/* ==================== REUSABLE CSS CLASSES (Additions) ==================== */
.section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.section__title {
    font-size: var(--h2-font-size);
    text-align: center;
    margin-bottom: 4rem;
    font-family: var(--font-heading);
}

/* ==================== ABOUT ==================== */
.about {
    background-color: var(--color-surface);
}

.about__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 3rem;
    margin-bottom: 5rem;
}

.about__image img {
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.about__title {
    font-size: var(--h3-font-size);
    margin-bottom: var(--mb-1-5);
    font-family: var(--font-heading);
}

.about__description {
    color: var(--color-text-secondary);
    margin-bottom: var(--mb-1);
}

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

.feature-card {
    background-color: var(--color-background);
    padding: 2rem 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.1);
}

.feature-card__icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--mb-1-5);
    background-color: rgba(74, 144, 226, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card__icon .lucide {
    color: var(--color-primary);
    width: 28px;
    height: 28px;
}

.feature-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--mb-0-5);
    font-family: var(--font-heading);
}

.feature-card__description {
    color: var(--color-text-secondary);
    font-size: var(--small-font-size);
    line-height: 1.5;
}

/* ==================== MEDIA QUERIES (About) ==================== */
@media screen and (max-width: 992px) {
    .about__features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .section {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }
    .section__title {
        font-size: 2rem;
        margin-bottom: 3rem;
    }
    .about__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media screen and (max-width: 576px) {
    .about__features-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== REUSABLE CSS CLASSES (Additions) ==================== */
.section__subtitle {
    text-align: center;
    max-width: 600px;
    margin: -3rem auto 4rem;
    color: var(--color-text-secondary);
}

/* ==================== FEATURES ==================== */
.features__container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
}

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

.features__tab {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
}

.features__tab:hover {
    background-color: rgba(74, 144, 226, 0.1);
}

.features__tab.features__tab--active {
    background-color: var(--color-primary);
    color: var(--color-text-primary);
    font-weight: var(--font-medium);
}
.features__tab.features__tab--active .lucide {
    color: var(--color-text-primary);
}

.features__tab .lucide {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    transition: color 0.3s;
}

.features__content-area {
    background-color: var(--color-surface);
    padding: 2rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
}

.features__content {
    display: none;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
}

.features__content.features__content--active {
    display: block;
    opacity: 1;
}

.features__content-image {
    margin-bottom: var(--mb-2);
}
.features__content-image img {
    border-radius: 0.5rem;
    width: 100%;
}

.features__content-title {
    font-size: var(--h3-font-size);
    margin-bottom: var(--mb-1);
}

.features__content-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--mb-1-5);
}

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

.features__list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.features__list .lucide {
    color: var(--color-primary);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ==================== MEDIA QUERIES (Features) ==================== */
@media screen and (max-width: 992px) {
    .features__container {
        grid-template-columns: 240px 1fr;
        gap: 2rem;
    }
}

@media screen and (max-width: 768px) {
    .features__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .features__tabs {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 1rem; /* for scrollbar */
        -ms-overflow-style: none;  /* IE and Edge */
        scrollbar-width: none;  /* Firefox */
    }
    .features__tabs::-webkit-scrollbar {
        display: none; /* Chrome, Safari, Opera */
    }
    .features__tab {
        flex-shrink: 0;
    }
}

/* ==================== HOW IT WORKS ==================== */
.how-it-works {
    background-color: var(--color-surface);
}

.how-it-works__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
}

.step-card {
    background-color: var(--color-background);
    padding: 2.5rem 2rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    position: relative;
    z-index: 1;
}

.step-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--mb-1-5);
}

.step-card__number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: var(--font-bold);
    color: var(--color-border);
    line-height: 1;
}

.step-card__icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-surface);
}

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

.step-card__title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: var(--mb-1);
}

.step-card__description {
    color: var(--color-text-secondary);
    font-size: var(--small-font-size);
}

/* Connector Line - Desktop only */
@media screen and (min-width: 769px) {
    .step-card:not(:last-child)::after {
        content: '';
        position: absolute;
        top: 65px;
        left: 100%;
        width: 100%;
        transform: translateX(-50%);
        height: 2px;
        background-image: linear-gradient(to right, var(--color-primary) 50%, transparent 50%);
        background-size: 16px 2px;
        background-repeat: repeat-x;
        z-index: 0;
    }
    
    .how-it-works__container {
        gap: 4rem; /* Increase gap to make space for the line */
    }
}


/* ==================== MEDIA QUERIES (How it works) ==================== */
@media screen and (max-width: 992px) {
    .step-card:not(:last-child)::after {
        display: none; /* Hide connector on smaller tablets */
    }
    .how-it-works__container {
        gap: 1.5rem;
    }
}

@media screen and (max-width: 768px) {
    .how-it-works__container {
        grid-template-columns: 1fr;
    }
    .step-card {
        padding: 2rem 1.5rem;
    }
}

/* ==================== FAQ ==================== */
.faq__contact-link {
    color: var(--color-primary);
    font-weight: var(--font-medium);
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: color 0.3s;
}
.faq__contact-link:hover {
    color: var(--color-primary-hover);
}

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

.faq__item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1rem 1.5rem;
    overflow: hidden;
    transition: padding 0.3s ease;
}

.faq__item.active {
    padding-bottom: 1.5rem;
}

.faq__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    gap: 1rem;
}

/* For clicking the whole header area */
.faq__header h3 {
    pointer-events: none;
}

.faq__question {
    font-size: 1.125rem;
    font-weight: var(--font-medium);
}

.faq__icon {
    flex-shrink: 0;
    transition: transform 0.4s ease;
}

.faq__item.active .faq__icon {
    transform: rotate(180deg);
}

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

.faq__item.active .faq__content {
    /* Set a large enough max-height */
    max-height: 200px;
    padding-top: 1rem;
}

.faq__answer {
    color: var(--color-text-secondary);
    line-height: 1.7;
    padding-bottom: 0.5rem;
}

/* ==================== MEDIA QUERIES (FAQ) ==================== */
@media screen and (max-width: 768px) {
    .faq__question {
        font-size: 1rem;
    }
    .faq__item {
        padding: 0.75rem 1.25rem;
    }
}

/* ==================== CONTACT ==================== */
.contact {
    background-color: var(--color-surface);
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 4rem;
    background-color: var(--color-background);
    padding: 3rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
}

.contact__info-title {
    font-size: var(--h3-font-size);
    margin-bottom: var(--mb-1);
}

.contact__info-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--mb-2);
}

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

.contact__info-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact__info-list .lucide {
    color: var(--color-primary);
    width: 24px;
    height: 24px;
}

/* Form Styles */
.contact__form-group {
    margin-bottom: 1.5rem;
}

.contact__form-label {
    display: block;
    font-weight: var(--font-medium);
    margin-bottom: var(--mb-0-5);
}

.contact__form-input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    font-size: var(--normal-font-size);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.contact__form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

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

.contact__captcha-question {
    font-weight: var(--font-bold);
}

.contact__form-input--captcha {
    width: 80px;
}

.contact__form-group--checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.contact__form-checkbox-label {
    color: var(--color-text-secondary);
    font-size: var(--small-font-size);
}
.contact__form-checkbox-label a {
    color: var(--color-primary);
    text-decoration: underline;
}

.contact__form-message {
    font-size: var(--small-font-size);
    color: #ff6b6b; /* red for errors */
    margin-bottom: 1rem;
    height: 20px;
}

.contact__form-button {
    width: 100%;
    justify-content: center;
}

.contact__success-message {
    display: none; /* Hidden by default */
    text-align: center;
    padding: 3rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
}
.contact__success-message .lucide {
    color: #45cc87; /* Green for success */
    width: 60px;
    height: 60px;
    margin-bottom: var(--mb-1-5);
}
.contact__success-message h3 {
    font-size: 1.5rem;
    margin-bottom: var(--mb-1);
}

/* ==================== MEDIA QUERIES (Contact) ==================== */
@media screen and (max-width: 992px) {
    .contact__container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}
@media screen and (max-width: 768px) {
    .contact__container {
        padding: 2rem 1.5rem;
    }
}

/* ==================== COOKIE POPUP ==================== */
.cookie-popup {
    position: fixed;
    bottom: -100%; /* Initially hidden */
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    z-index: calc(var(--z-fixed) + 10);
    transition: bottom 0.5s ease-in-out;
}

.cookie-popup.show {
    bottom: 0;
}

.cookie-popup__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
    gap: 1.5rem;
}

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

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

.cookie-popup__button {
    background-color: var(--color-primary);
    color: var(--color-text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    border: none;
    cursor: pointer;
    font-weight: var(--font-medium);
    transition: background-color 0.3s;
    white-space: nowrap;
}

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

/* Media Query for mobile */
@media screen and (max-width: 768px) {
    .cookie-popup__content {
        flex-direction: column;
        text-align: center;
    }
}

/* ==================== POLICY PAGES STYLES ==================== */
.pages {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 6rem;
    min-height: 100vh;
}

.pages .container {
    max-width: 800px; /* Narrower container for better readability */
}

.pages h1 {
    font-size: var(--h1-font-size);
    margin-bottom: var(--mb-2-5);
    font-family: var(--font-heading);
}

.pages h2 {
    font-size: var(--h2-font-size);
    margin-top: 2.5rem;
    margin-bottom: var(--mb-1-5);
    font-family: var(--font-heading);
}

.pages p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--mb-1-5);
}

.pages ul {
    list-style-type: disc;
    padding-left: 2rem;
    margin-bottom: var(--mb-1-5);
}

.pages li {
    color: var(--color-text-secondary);
    margin-bottom: var(--mb-1);
}

.pages a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color 0.3s;
}

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

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