:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #e94560;
    --color-accent-dark: #d63d56;
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-text: #333333;
    --color-muted: #6b7280;
    --color-border: #e5e7eb;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
}

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

::selection {
    background-color: var(--color-accent);
    color: white;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section--alt {
    background-color: var(--color-surface);
}

.section__header {
    text-align: center;
    margin-bottom: 48px;
}

.section__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-muted);
    max-width: 600px;
    margin: 0 auto;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(250, 250, 250, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: box-shadow var(--transition-base);
}

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

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo__img {
    height: 32px;
    width: auto;
}

.logo__img--invert {
    display: none;
}

.logo:hover .logo__img:not(.logo__img--invert) {
    display: none;
}

.logo:hover .logo__img--invert {
    display: block;
}

.logo span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

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

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

.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

.burger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.burger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn--primary:hover {
    background-color: var(--color-accent-dark);
    transform: scale(1.02);
}

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

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

.btn--full {
    width: 100%;
}

.form-status {
    margin-top: 16px;
    font-size: 0.875rem;
    text-align: center;
}

.form-status--success {
    color: #10b981;
}

.form-status--error {
    color: #ef4444;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    position: relative;
    overflow: hidden;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-muted);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero__decoration {
    position: relative;
    height: 400px;
}

.hero__shape {
    position: absolute;
    border-radius: 50%;
}

.hero__shape--1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-accent) 0%, rgba(233, 69, 96, 0.3) 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.2;
}

.hero__shape--2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--color-secondary) 0%, rgba(22, 33, 62, 0.3) 100%);
    top: 20%;
    right: 10%;
    opacity: 0.3;
}

.hero__shape--3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--color-primary) 0%, rgba(26, 26, 46, 0.2) 100%);
    bottom: 10%;
    left: 20%;
    opacity: 0.25;
}

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

.product-card {
    background-color: var(--color-surface);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.product-card {
    position: relative;
}

.product-card__badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    background-color: var(--color-accent);
    border-radius: 20px;
}

.product-card__header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    height: 40px;
}

.product-card__logo {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    color: var(--color-accent);
}

.product-card__title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0;
    line-height: 1;
}

.product-card__title a {
    transition: color var(--transition-fast);
}

.product-card__title a:hover {
    color: var(--color-accent);
}

.product-card__description {
    font-size: 1rem;
    color: var(--color-muted);
    margin-bottom: 20px;
    line-height: 1.7;
}

.product-card__features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-card__features li {
    position: relative;
    padding-left: 20px;
    font-size: 0.9375rem;
    color: var(--color-muted);
}

.product-card__features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about__text {
    max-width: 520px;
}

.about__text .section__title {
    text-align: left;
}

.about__description {
    font-size: 1.125rem;
    color: var(--color-text);
    line-height: 1.8;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background-color: var(--color-bg);
    border-radius: 12px;
}

.feature-item__icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background-color: var(--color-surface);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.feature-item__content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.feature-item__content p {
    font-size: 0.9375rem;
    color: var(--color-muted);
}

.contacts__inner {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.contact-form {
    background-color: var(--color-surface);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    padding: 32px;
    background-color: var(--color-surface);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.contact-info__item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    color: var(--color-text);
}

.contact-info__item + .contact-info__item {
    margin-top: 12px;
}

.contact-info__item--vertical {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.contact-info__item svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-info__item a {
    transition: color var(--transition-fast);
}

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

.footer {
    background-color: var(--color-primary);
    color: white;
    padding: 32px 0;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copyright {
    font-size: 0.875rem;
    opacity: 0.8;
}

.footer__social {
    display: flex;
    gap: 16px;
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--color-accent);
    transform: scale(1.1);
}

.success-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.success-modal.active {
    opacity: 1;
    visibility: visible;
}

.success-modal__content {
    background-color: var(--color-surface);
    padding: 48px;
    border-radius: 16px;
    text-align: center;
    max-width: 400px;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.success-modal.active .success-modal__content {
    transform: scale(1);
}

.success-modal__content svg {
    margin-bottom: 20px;
}

.success-modal__content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.success-modal__content p {
    font-size: 1rem;
    color: var(--color-muted);
    margin-bottom: 24px;
}

[data-animate] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 600ms ease-out, transform 600ms ease-out;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero__decoration {
        display: none;
    }

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

    .about__text .section__title {
        text-align: center;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-surface);
        padding: 24px;
        gap: 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    }

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

    .nav__link {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid var(--color-border);
    }

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

    .nav__link::after {
        display: none;
    }

    .burger {
        display: flex;
    }

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

    .product-card {
        padding: 24px;
    }

    .contact-form {
        padding: 24px;
    }

    .footer__inner {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }

    .hero__title {
        font-size: 1.75rem;
    }

    .section__title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9375rem;
    }

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