/* GLOBAL STYLES */
:root {
    --color-background: #0D1117;
    --color-surface: #161B22;
    --color-primary: #2F81F7;
    --color-primary-hover: #4C9AFF;
    --color-text-primary: #E6EDF3;
    --color-text-secondary: #8B949E;
    
    --font-family-base: 'Inter', sans-serif;
    --font-family-heading: 'Manrope', sans-serif;
    
    --container-width: 1140px;
    --container-padding: 16px;
    
    --border-radius: 8px;
    --transition-duration: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-duration);
}

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

ul {
    list-style: none;
}

h1, h2, h3 {
    font-family: var(--font-family-heading);
    font-weight: 600;
}

/* HEADER */
.header {
    background-color: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-surface);
    padding: 16px 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: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
}

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

.header__nav-list {
    display: flex;
    gap: 24px;
}

.header__nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

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

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

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

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

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

.footer__container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding-bottom: 60px;
}

.footer__column--brand {
    grid-column: span 1;
}

.footer__logo {
    font-family: var(--font-family-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-primary);
    display: inline-block;
    margin-bottom: 16px;
}

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

.footer__tagline {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.footer__heading {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--color-text-primary);
}

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

.footer__link {
    color: var(--color-text-secondary);
    transition: color var(--transition-duration), padding-left var(--transition-duration);
}

.footer__link:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.footer__list--contacts li {
    display: flex;
    align-items: flex-start;
}

.footer__address {
    color: var(--color-text-secondary);
    align-items: flex-start;
    display: flex;
}

.footer__icon {
    width: 18px;
    height: 18px;
    margin-right: 10px;
    flex-shrink: 0;
    position: relative;
    top: 4px;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    text-align: center;
    font-size: 14px;
    color: var(--color-text-secondary);
}


/* ADAPTIVE STYLES (Mobile-first) */
@media (max-width: 992px) {
    .footer__container {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .header__nav {
        display: none; /* Will be implemented later */
    }
    
    .header__burger-btn {
        display: block;
    }

    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__list--contacts li, .footer__address {
        justify-content: center;
        text-align: left;
    }
}

/* SHARED COMPONENTS */
.btn {
    display: inline-block;
    padding: 12px 28px;
    background-color: var(--color-primary);
    color: #fff;
    font-family: var(--font-family-heading);
    font-weight: 600;
    font-size: 16px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: background-color var(--transition-duration), transform var(--transition-duration);
    border: 1px solid var(--color-primary);
}

.btn:hover {
    background-color: var(--color-primary-hover);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(47, 129, 247, 0.3);
}


/* HERO SECTION */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 73px); /* 100vh minus header height */
    padding: 80px 0;
    text-align: center;
    overflow: hidden;
}

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

.hero__container {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--color-text-primary);
    font-weight: 700;
}

.hero__subtitle {
    font-size: 20px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

/* ADAPTIVE STYLES FOR HERO */
@media (max-width: 768px) {
    .hero {
        min-height: calc(100vh - 65px);
        padding: 60px 0;
    }

    .hero__title {
        font-size: 36px;
    }

    .hero__subtitle {
        font-size: 18px;
    }
}

/* SHARED SECTION HEADER */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header__title {
    font-size: 42px;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.section-header__subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* SCENARIOS SECTION */
.scenarios {
    padding: 100px 0;
    background-color: var(--color-background);
}

.scenarios__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.scenarios__card {
    background-color: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: transform var(--transition-duration), box-shadow var(--transition-duration);
}

.scenarios__card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.scenarios__card-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(47, 129, 247, 0.1);
    border-radius: 50%;
    margin-bottom: 24px;
}

.scenarios__card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.scenarios__card-title {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

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


/* ADAPTIVE STYLES FOR SCENARIOS */
@media (max-width: 992px) {
    .scenarios__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .scenarios {
        padding: 80px 0;
    }

    .section-header__title {
        font-size: 32px;
    }

    .section-header__subtitle {
        font-size: 16px;
    }

    .scenarios__card {
        padding: 24px;
    }
}

/* TOOLS SECTION */
.tools {
    padding: 100px 0;
    background-color: var(--color-surface);
}

.tools__tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tools__tab-btn {
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: transparent;
    border: 1px solid var(--color-text-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-duration);
}

.tools__tab-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-text-primary);
}

.tools__tab-btn--active {
    color: #fff;
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.tools__panel {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.tools__panel--active {
    display: grid;
}

.tools__card {
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
}

.tools__card-icon {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.tools__card-title {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.tools__card-text {
    color: var(--color-text-secondary);
    font-size: 15px;
}


/* ADAPTIVE STYLES FOR TOOLS */
@media (max-width: 992px) {
    .tools__panel {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tools {
        padding: 80px 0;
    }
    .tools__panel {
        grid-template-columns: 1fr;
    }
    .tools__tabs {
        gap: 12px;
    }
    .tools__tab-btn {
        font-size: 14px;
        padding: 8px 16px;
    }
}

/* PRINCIPLES SECTION */
.principles {
    padding: 100px 0;
    background-color: var(--color-background);
}

.principles__accordion {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-surface);
    border-radius: var(--border-radius);
    overflow: hidden;
}

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

.principles__item:last-child {
    border-bottom: none;
}

.principles__item-header {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 20px;
    font-weight: 600;
    font-family: var(--font-family-heading);
    cursor: pointer;
    text-align: left;
}

.principles__item-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    transition: transform var(--transition-duration) ease-in-out;
    flex-shrink: 0;
    margin-left: 16px;
}

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

.principles__item-content-inner {
    padding: 0 24px 20px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Active state */
.principles__item--active .principles__item-header {
    color: var(--color-primary);
}

.principles__item--active .principles__item-icon {
    transform: rotate(45deg);
}

.principles__item--active .principles__item-content {
    max-height: 200px; /* Adjust if content is taller */
}


/* ADAPTIVE STYLES FOR PRINCIPLES */
@media (max-width: 768px) {
    .principles {
        padding: 80px 0;
    }
    
    .principles__item-header {
        font-size: 18px;
        padding: 16px;
    }
    
    .principles__item-content-inner {
        padding: 0 16px 16px;
    }
}

/* SAFETY SECTION */
.safety {
    padding: 100px 0;
    background-color: var(--color-surface);
}

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

.safety__image-wrapper {
    width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.safety__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.safety__principles-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

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

.safety__principle-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(47, 129, 247, 0.1);
}

.safety__principle-icon svg {
    width: 22px;
    height: 22px;
    color: var(--color-primary);
}

.safety__principle-title {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.safety__principle-text p {
    color: var(--color-text-secondary);
}

/* ADAPTIVE STYLES FOR SAFETY */
@media (max-width: 992px) {
    .safety__content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .safety__image-wrapper {
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .safety {
        padding: 80px 0;
    }
}

/* CONTACT SECTION */
.contact {
    padding: 100px 0;
    background-color: var(--color-background);
}

.contact__wrapper {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-surface);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* FORM STYLES */
.form__group {
    margin-bottom: 24px;
}

.form__label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
    font-size: 14px;
}

.form__input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--color-background);
    border: 1px solid var(--color-surface);
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-size: 16px;
    transition: border-color var(--transition-duration), box-shadow var(--transition-duration);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(47, 129, 247, 0.3);
}

.form__group--captcha {
    margin-top: 32px;
}

#captchaQuestion {
    font-weight: bold;
}

.form__group--checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.form__group--checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.contact__btn {
    width: 100%;
    padding: 14px;
    margin-top: 16px;
    font-size: 18px;
}

/* SUCCESS MESSAGE */
.contact__success-message {
    text-align: center;
    padding: 40px;
}

.contact__success-icon {
    width: 60px;
    height: 60px;
    color: var(--color-primary);
    margin-bottom: 24px;
}
.contact__success-message h3 {
    font-size: 28px;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}
.contact__success-message p {
    color: var(--color-text-secondary);
    font-size: 18px;
}


/* ADAPTIVE STYLES FOR CONTACT */
@media (max-width: 768px) {
    .contact {
        padding: 80px 0;
    }
    .contact__wrapper {
        padding: 24px;
    }
}

/* SHARED COMPONENTS (add modifier) */
.btn--small {
    padding: 8px 16px;
    font-size: 14px;
}


/* COOKIE POP-UP */
.cookie-popup {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 500px;
    background-color: var(--color-surface);
    color: var(--color-text-secondary);
    padding: 16px 24px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 200;
    transform: translateY(200%);
    transition: transform 0.5s ease-in-out;
}

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

.cookie-popup__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.cookie-popup__text {
    font-size: 14px;
}

.cookie-popup__text a {
    text-decoration: underline;
}

/* PAGES (Privacy, Terms, etc.) */
.pages {
    padding: 80px 0;
}

.pages .container {
    max-width: 800px;
    color: var(--color-text-secondary);
}

.pages h1, .pages h2 {
    color: var(--color-text-primary);
}

.pages h1 {
    font-size: 42px;
    margin-bottom: 32px;
}

.pages h2 {
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 16px;
}

.pages p {
    margin-bottom: 16px;
    line-height: 1.8;
}

.pages ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 16px;
}

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

.pages a {
    font-weight: 500;
}

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


/* ADAPTIVE STYLES FOR POP-UP */
@media (max-width: 768px) {
    .cookie-popup {
        left: 10px;
        right: 10px;
        bottom: 10px;
    }
    .cookie-popup__content {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
}