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

:root {
    --bg-color: #121826;
    --primary-text-color: #F0F0F0;
    --accent-color: #00F5D4;
    --secondary-color: #3A475F;
    --card-bg-color: #1A2233;

    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Poppins', sans-serif;

    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

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

ul {
    list-style: none;
}

.logo {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-text-color);
}
.logo:hover {
    color: var(--accent-color);
}

/* ------------------- */
/* HEADER              */
/* ------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(18, 24, 38, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
    display: flex;
    align-items: center;
}

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

.header__nav {
    display: none; /* Hidden on mobile by default */
}

.header__menu-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.header__menu-link {
    font-family: var(--font-secondary);
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-text-color);
    position: relative;
    padding: 5px 0;
}

.header__menu-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease-in-out;
}

.header__menu-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header__burger-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 110;
}

.header__burger-line {
    width: 100%;
    height: 2px;
    background-color: var(--primary-text-color);
    transition: all 0.3s ease;
}

/* Mobile Menu Active State */
body.menu-open {
    overflow: hidden;
}

.header__nav--active {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    justify-content: center;
    align-items: center;
}

.header__nav--active .header__menu-list {
    font-size: 24px;
}

.header__burger-btn.active .header__burger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.header__burger-btn.active .header__burger-line:nth-child(2) {
    opacity: 0;
}
.header__burger-btn.active .header__burger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}


/* Desktop Styles */
@media (min-width: 992px) {
    .header__burger-btn {
        display: none;
    }
    .header__nav {
        display: block;
    }
    .header__menu-list {
        flex-direction: row;
        gap: 35px;
    }
}

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

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

.footer__description {
    margin-top: 15px;
    color: #a0a0a0;
    max-width: 250px;
}

.footer__title {
    font-family: var(--font-secondary);
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary-text-color);
}

.footer__list li:not(:last-child) {
    margin-bottom: 10px;
}

.footer__link {
    color: #a0a0a0;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.footer__link:hover {
    color: var(--accent-color);
}

.footer__icon {
    width: 18px;
    height: 18px;
}

.footer__bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--secondary-color);
    color: #a0a0a0;
    font-size: 14px;
}


/* Desktop Styles */
@media (min-width: 768px) {
    .footer__container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer__container {
        grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    }
}

/* ------------------- */
/* BUTTONS             */
/* ------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    background-color: var(--accent-color);
    color: var(--bg-color);
    font-family: var(--font-secondary);
    font-weight: 600;
    font-size: 16px;
    border: 2px solid var(--accent-color);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn__icon {
    transition: transform 0.3s ease;
}

.btn:hover .btn__icon {
    transform: translateX(5px);
}

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

.hero__background-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50vw;
    height: 50vw;
    max-width: 600px;
    max-height: 600px;
    background: radial-gradient(circle, rgba(0, 245, 212, 0.15) 0%, rgba(0, 245, 212, 0) 70%);
    transform: translate(-50%, -50%);
    z-index: 1;
}

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

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

.hero__title {
    font-family: var(--font-secondary);
    font-size: 2.5rem; /* 40px */
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero__title--animated {
    color: var(--accent-color);
    display: inline-block;
    position: relative;
}

/* Blinking cursor effect */
.hero__title--animated::after {
    content: '_';
    position: absolute;
    right: -10px;
    bottom: 0;
    color: var(--accent-color);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}


.hero__subtitle {
    font-size: 1.125rem; /* 18px */
    max-width: 650px;
    margin: 0 auto 30px;
    color: #c0c0c0;
}

.hero__scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: var(--primary-text-color);
    animation: bounce 2s infinite;
}

.hero__scroll-icon {
    width: 24px;
    height: 24px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translate(-50%, 0);
    }
    40% {
        transform: translate(-50%, -15px);
    }
    60% {
        transform: translate(-50%, -5px);
    }
}


/* Responsive Styles */
@media (min-width: 768px) {
    .hero__title {
        font-size: 3.5rem; /* 56px */
    }
    .hero__subtitle {
        font-size: 1.25rem; /* 20px */
    }
    .btn {
       padding: 15px 30px;
       font-size: 18px;
    }
}

/* ------------------- */
/* GENERIC SECTION     */
/* ------------------- */
.section {
    padding: 80px 0;
}

.section__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section__title {
    font-family: var(--font-secondary);
    font-size: 2.25rem; /* 36px */
    margin-bottom: 15px;
}

.section__subtitle {
    font-size: 1.125rem; /* 18px */
    color: #c0c0c0;
    line-height: 1.7;
}


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

.how-it-works__grid {
    display: grid;
    gap: 30px;
    grid-template-columns: 1fr;
}

.how-it-works__card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--secondary-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.how-it-works__card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-color);
}

.how-it-works__card-icon {
    margin: 0 auto 20px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 245, 212, 0.1);
    border-radius: 50%;
    color: var(--accent-color);
}

.how-it-works__card-icon i {
    width: 32px;
    height: 32px;
}

.how-it-works__card-title {
    font-family: var(--font-secondary);
    font-size: 1.5rem; /* 24px */
    margin-bottom: 10px;
}

.how-it-works__card-text {
    color: #a0a0a0;
}

/* Responsive Styles */
@media (min-width: 768px) {
    .how-it-works__grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .section {
        padding: 100px 0;
    }
    .section__title {
        font-size: 2.5rem; /* 40px */
    }
}

/* ------------------- */
/* KEY-IDEAS SECTION   */
/* ------------------- */
.key-ideas {
    background-color: var(--card-bg-color);
}

.key-ideas__tabs-container {
    max-width: 900px;
    margin: 0 auto;
}

.key-ideas__tabs-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.key-ideas__tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-secondary);
    font-size: 1rem;
    background-color: transparent;
    color: var(--primary-text-color);
    border: 1px solid var(--secondary-color);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.key-ideas__tab-btn:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.key-ideas__tab-btn--active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--bg-color);
}

.key-ideas__tab-icon {
    width: 18px;
    height: 18px;
}

.key-ideas__tabs-content {
    position: relative;
}

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

.key-ideas__tab-panel--active {
    display: block;
}

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

.key-ideas__panel-grid {
    display: grid;
    align-items: center;
    gap: 30px;
    grid-template-columns: 1fr;
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 8px;
}

.key-ideas__panel-image img {
    width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: cover;
    border-radius: 6px;
}

.key-ideas__panel-text h3 {
    font-family: var(--font-secondary);
    font-size: 1.75rem; /* 28px */
    margin-bottom: 15px;
    color: var(--accent-color);
}

.key-ideas__panel-text p {
    margin-bottom: 20px;
    color: #c0c0c0;
}

.key-ideas__topic-list {
    list-style: none;
    padding: 0;
}

.key-ideas__topic-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
}

.key-ideas__topic-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 15px;
    height: 2px;
    background-color: var(--accent-color);
}

/* Responsive Styles */
@media (min-width: 768px) {
    .key-ideas__panel-grid {
        grid-template-columns: 2fr 3fr;
        gap: 40px;
        padding: 40px;
    }
}

/* ------------------- */
/* FORMATS SECTION     */
/* ------------------- */
.formats {
    background-color: var(--bg-color);
}

.formats__grid {
    display: grid;
    gap: 30px;
    grid-template-columns: 1fr;
    max-width: 1000px;
    margin: 0 auto;
}

.formats__card {
    /* Стили очень похожи на how-it-works__card для консистентности */
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--secondary-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.formats__card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-color);
}

.formats__card-icon {
    margin: 0 auto 20px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 245, 212, 0.1);
    border-radius: 50%;
    color: var(--accent-color);
}

.formats__card-icon i {
    width: 32px;
    height: 32px;
}

.formats__card-title {
    font-family: var(--font-secondary);
    font-size: 1.5rem; /* 24px */
    margin-bottom: 10px;
}

.formats__card-text {
    color: #a0a0a0;
}

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

/* ------------------- */
/* REVIEWS SECTION     */
/* ------------------- */
.reviews {
    background-color: var(--card-bg-color);
    overflow: hidden; /* Important for slider layouts */
}

.reviews__slider {
    width: 100%;
    padding: 20px 0 60px 0 !important; /* !important to override swiper inline styles */
}

.review-card {
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 8px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.review-card__text {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: #c0c0c0;
    font-style: italic;
    flex-grow: 1;
}

.review-card__author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.review-card__avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.review-card__name {
    font-family: var(--font-secondary);
    font-weight: 600;
    margin: 0;
}

.review-card__role {
    font-size: 0.875rem;
    color: #a0a0a0;
}

/* Swiper Pagination Styles */
.swiper-pagination-bullet {
    background-color: var(--secondary-color);
    width: 10px;
    height: 10px;
    opacity: 0.8;
    transition: background-color 0.3s ease;
}

.swiper-pagination-bullet-active {
    background-color: var(--accent-color);
}

/* ------------------- */
/* CONTACT SECTION     */
/* ------------------- */
.contact {
    background-color: var(--bg-color);
}

.contact__wrapper {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--secondary-color);
}

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

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

.form-label {
    margin-bottom: 8px;
    font-size: 0.875rem;
    color: #c0c0c0;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--bg-color);
    border: 1px solid var(--secondary-color);
    border-radius: 5px;
    color: var(--primary-text-color);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.2);
}

/* Стили для кастомного чекбокса */
.form-group--checkbox {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.form-group--checkbox input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background-color: var(--bg-color);
    border: 1px solid var(--secondary-color);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.form-group--checkbox input[type="checkbox"]:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.form-group--checkbox input[type="checkbox"]:checked::after {
    content: '✓';
    font-size: 16px;
    color: var(--bg-color);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.form-group--checkbox label {
    font-size: 0.875rem;
    color: #a0a0a0;
    cursor: pointer;
}

.form-group--checkbox label a {
    color: var(--accent-color);
    text-decoration: underline;
}

.contact__btn {
    width: 100%;
    margin-top: 10px;
}
.contact__btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}


.form-status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    font-weight: 500;
    display: none; /* Hidden by default */
    animation: fadeIn 0.5s;
}

.form-status--success {
    display: block;
    background-color: rgba(0, 245, 212, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.form-status--error {
    display: block;
    background-color: rgba(255, 82, 82, 0.1);
    color: #ff5252;
    border: 1px solid #ff5252;
}

@media (min-width: 768px) {
    .contact__wrapper {
        padding: 40px;
    }
}

/* ------------------- */
/* COOKIE POP-UP       */
/* ------------------- */
.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--card-bg-color);
    border-top: 1px solid var(--secondary-color);
    padding: 20px 0;
    z-index: 200;
    transform: translateY(120%);
    transition: transform 0.5s ease-in-out;
}

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

.cookie-popup__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    text-align: center;
}

.cookie-popup__text {
    font-size: 0.875rem;
    color: #c0c0c0;
}

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

.cookie-popup__btn {
    background-color: var(--accent-color);
    color: var(--bg-color);
    border: none;
    padding: 8px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-family: var(--font-secondary);
    font-weight: 600;
    flex-shrink: 0;
    transition: background-color 0.3s ease;
}

.cookie-popup__btn:hover {
    background-color: #00dec4;
}

/* Responsive Styles */
@media (min-width: 768px) {
    .cookie-popup__container {
        flex-direction: row;
        text-align: left;
    }
}

/* ------------------- */
/* POLICY PAGES        */
/* ------------------- */
.pages {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 80px;
}

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

.pages h1,
.pages h2 {
    font-family: var(--font-secondary);
    line-height: 1.3;
    margin-bottom: 20px;
}

.pages h1 {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 30px;
}

.pages h2 {
    font-size: 1.75rem;
    margin-top: 40px;
}

.pages p {
    margin-bottom: 20px;
    color: #c0c0c0;
    line-height: 1.8;
}

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

.pages li {
    margin-bottom: 10px;
    color: #c0c0c0;
}

.pages a {
    text-decoration: underline;
}

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

.pages strong {
    color: var(--primary-text-color);
    font-weight: 500;
}