/* ===== CSS Variables ===== */
:root {
    /* Colors - Modern Emerald Theme */
    --color-primary: #059669;
    --color-primary-dark: #047857;
    --color-primary-light: #10b981;
    --color-secondary: #0d9488;
    --color-accent: #34d399;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-light: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-dark: #0f172a;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
}

/* ===== Button ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo__img {
    height: 50px;
    width: auto;
}

.logo__text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 2px;
    line-height: 1;
}

.logo__subtext {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* Navigation */
.nav__list {
    display: flex;
    gap: var(--spacing-xl);
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-lg);
}

.lang-switcher__link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-600);
    background-color: var(--color-gray-100);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.lang-switcher__link:hover {
    background-color: var(--color-gray-200);
    color: var(--color-gray-800);
}

.lang-switcher__link.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Burger Menu */
.burger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.burger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.burger.active span:nth-child(2) {
    opacity: 0;
}

.burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    color: var(--color-white);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero__bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(4, 120, 87, 0.93) 0%, rgba(15, 23, 42, 0.92) 100%);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero__content {
    max-width: 600px;
}

.hero__logo {
    margin-bottom: var(--spacing-xl);
}

.hero__logo-img {
    height: 60px;
    width: auto;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero__description {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-2xl);
}

.hero__stats {
    display: flex;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat__number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-white);
}

.stat__text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.hero .btn--primary {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.hero .btn--primary:hover {
    background-color: var(--color-gray-100);
}

/* Hero Image */
.hero__image {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero__image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    transform: rotate(2deg);
    transition: transform var(--transition-base);
}

.hero__image-wrapper:hover {
    transform: rotate(0deg) scale(1.02);
}

.hero__img {
    width: 100%;
    max-width: 450px;
    height: auto;
    display: block;
}

.hero__image-badge {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background: var(--color-white);
    color: var(--color-primary);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    text-align: center;
    z-index: 2;
}

.hero__badge-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1;
}

.hero__badge-text {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

/* ===== About Section ===== */
.about {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about__text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
}

.about__text p {
    margin-bottom: var(--spacing-lg);
}

.about__text strong {
    color: var(--color-primary);
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--color-gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateX(10px);
}

.feature:hover .feature__icon {
    color: var(--color-white);
}

.feature:hover p {
    color: var(--color-gray-300);
}

.feature__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    transition: color var(--transition-base);
}

.feature__icon svg {
    width: 100%;
    height: 100%;
}

.feature h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.feature p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    transition: color var(--transition-base);
}

/* ===== Services Section ===== */
.services {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-gray-100);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.service-card__icon {
    width: 56px;
    height: 56px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.service-card__icon svg {
    width: 100%;
    height: 100%;
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.service-card__text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ===== Advantages Section ===== */
.advantages {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
}

.advantages__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.advantage {
    text-align: center;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.advantage:hover {
    background-color: var(--color-gray-100);
}

.advantage__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-primary);
    background-color: var(--color-gray-100);
    border-radius: 50%;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.advantage:hover .advantage__icon {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.advantage__icon svg {
    width: 100%;
    height: 100%;
}

.advantage__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.advantage__text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ===== Contacts Section ===== */
.contacts {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.contacts .section-title {
    color: var(--color-white);
}

.contacts .section-subtitle {
    color: var(--color-gray-400);
}

.contacts__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contacts__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.contact-item:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateX(10px);
}

.contact-item__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    color: var(--color-accent);
}

.contact-item__icon svg {
    width: 100%;
    height: 100%;
}

.contact-item__text {
    display: flex;
    flex-direction: column;
}

.contact-item__label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-xs);
}

.contact-item__value {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-white);
}

.contact-item__value:hover {
    color: var(--color-accent);
}

.contacts__cta {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
}

.contacts__cta h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.contacts__cta p {
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.contacts__cta .btn--primary {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.contacts__cta .btn--primary:hover {
    background-color: var(--color-gray-100);
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(180deg, var(--color-gray-900) 0%, #022c22 100%);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-gray-800);
}

.footer__brand .logo--footer .logo__text {
    color: var(--color-white);
}

.footer__brand .logo--footer .logo__subtext {
    color: var(--color-gray-500);
}

.footer__description {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

.footer__links h4,
.footer__services h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer__links ul li,
.footer__services ul li {
    margin-bottom: var(--spacing-sm);
}

.footer__links a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

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

.footer__services li {
    font-size: var(--font-size-sm);
}

.footer__bottom {
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer__bottom p {
    font-size: var(--font-size-sm);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero__grid {
        gap: var(--spacing-2xl);
    }

    .hero__img {
        max-width: 380px;
    }

    .about__content {
        grid-template-columns: 1fr;
    }

    .advantages__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contacts__content {
        grid-template-columns: 1fr;
    }

    .footer__inner {
        grid-template-columns: 1fr 1fr;
    }

    .footer__brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }

    .nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__list {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .nav__link {
        display: block;
        padding: var(--spacing-md);
        text-align: center;
        font-size: var(--font-size-base);
    }

    .burger {
        display: flex;
    }

    .lang-switcher {
        margin-left: auto;
        margin-right: var(--spacing-md);
    }

    .lang-switcher__link {
        width: 32px;
        height: 32px;
    }

    .hero {
        padding-top: calc(80px + var(--spacing-2xl));
        padding-bottom: var(--spacing-3xl);
        min-height: auto;
    }

    .hero__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .hero__content {
        text-align: center;
        max-width: 100%;
    }

    .hero__logo {
        display: flex;
        justify-content: center;
    }

    .hero__stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }

    .hero__image {
        order: -1;
    }

    .hero__image-wrapper {
        transform: rotate(0deg);
    }

    .hero__image-badge {
        bottom: -15px;
        left: 50%;
        transform: translateX(-50%);
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .advantages__grid {
        grid-template-columns: 1fr;
    }

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

    .footer__brand {
        grid-column: auto;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --spacing-4xl: 4rem;
        --spacing-3xl: 3rem;
    }

    .feature {
        flex-direction: column;
        text-align: center;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}