:root {
    --color-bg: #0a0f1c;
    --color-surface: #121826;
    --color-primary: #00f3ff;
    --color-primary-hover: #00c2cc;
    --color-accent: #bc13fe;
    --color-text: #e0e6ed;
    --color-text-muted: #94a3b8;
    --font-heading: 'Orbitron', 'sans-serif';
    --font-body: 'Exo 2', sans-serif;
    --container-width: 1200px;
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    color: #fff;
    margin-bottom: 1rem;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section__title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: linear-gradient(90deg, #fff, var(--color-text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 700;
    cursor: pointer;
    border: none;
    text-align: center;
    font-family: var(--font-body);
    font-size: 1rem;
}

.btn--primary {
    background: var(--color-primary);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 243, 255, 0.5);
}

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

.btn--outline:hover {
    background: rgba(0, 243, 255, 0.1);
}

.btn--small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

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

/* Header */
.header {
    background: rgba(10, 15, 28, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    color: #fff;
}

.logo img {
    display: block;
    width: auto;
    height: 40px;
}

.logo--small img {
    height: 30px;
}

.nav__list {
    display: none;
}

.burger {
    background: none;
    border: none;
    cursor: pointer;
    display: block;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1002;
}

.burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    position: absolute;
    transition: var(--transition);
}

.burger span:nth-child(1) {
    top: 0;
}

.burger span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.burger span:nth-child(3) {
    bottom: 0;
}

.burger.active span:nth-child(1) {
    top: 50%;
    transform: rotate(45deg);
}

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

.burger.active span:nth-child(3) {
    top: 50%;
    transform: rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-bg);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    transition: transform 0.4s ease;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu__content {
    display: flex;
    flex-direction: column;
    gap: 30px;
    text-align: center;
}

.mobile-menu__link {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

@media(min-width: 1024px) {
    .nav__list {
        display: flex;
        gap: 30px;
    }

    .burger,
    .mobile-menu {
        display: none;
    }
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: url('images/hero_bg.jpg') no-repeat center center/cover;
    padding-top: 80px;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(10, 15, 28, 0.7) 0%, rgba(10, 15, 28, 0.9) 100%);
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.badge {
    display: inline-block;
    background: rgba(0, 243, 255, 0.1);
    color: var(--color-primary);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    border: 1px solid var(--color-primary);
}

.hero__title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero__subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.hero__actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

@media(min-width: 768px) {
    .hero__title {
        font-size: 4rem;
    }

    .hero__subtitle {
        font-size: 1.3rem;
    }
}

/* Features */
.features__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media(min-width: 768px) {
    .features__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    background: var(--color-surface);
    padding: 30px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
}

.feature-card__icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

/* Services */
.services__grid {
    display: grid;
    gap: 30px;
}

.service-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.service-card:hover {
    transform: scale(1.02);
}

.service-card img {
    height: 200px;
    width: 100%;
    object-fit: cover;
}

.service-card__content {
    padding: 25px;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--color-primary);
    margin-top: 15px;
    font-weight: 700;
}

.link-arrow span {
    transition: transform 0.3s;
}

.link-arrow:hover span {
    transform: translateX(5px);
}

@media(min-width: 600px) {
    .services__grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .services__grid {
        /* Masonry-like look can be simulated with columns if needed, but grid is safer */
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Reviews */
.reviews__grid {
    display: grid;
    gap: 30px;
}

@media(min-width: 768px) {
    .reviews__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.review-card {
    background: var(--color-surface);
    padding: 30px;
    border-radius: var(--radius);
}

.review-card__header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
}

.review-author h4 {
    margin-bottom: 0;
    font-size: 1rem;
}

.review-author span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Contacts */
.contacts__container {
    display: grid;
    gap: 40px;
}

.contacts__list {
    margin-top: 10px;
}

@media(min-width: 900px) {
    .contacts__container {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.contacts__list li {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--color-text-muted);
}

.contact-form {
    background: var(--color-surface);
    padding: 30px;
    border-radius: var(--radius);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input {
    width: 100%;
    padding: 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Footer */
.footer {
    background: #05080f;
    padding: 60px 0 20px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

@media(min-width: 768px) {
    .footer__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer__col h4 {
    color: #fff;
    margin-bottom: 20px;
}

.footer__col ul li,
.footer__col p {
    margin-bottom: 10px;
}

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

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    text-align: center;
}

.footer__links-bottom {
    margin-top: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Cookie Popup */
.cookie-popup {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: var(--color-surface);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 15px;
    transform: translateY(150%);
    transition: transform 0.5s ease;
    border: 1px solid var(--color-primary);
    max-width: 400px;
}

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

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

.cookie-popup__actions {
    display: flex;
    gap: 10px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--color-surface);
    padding: 30px;
    width: 90%;
    max-width: 600px;
    border-radius: var(--radius);
    z-index: 3001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal.active {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    visibility: visible;
}

.modal__close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

.modal__content {
    color: var(--color-text);
}

.modal__content h3 {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.modal__content ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 15px;
}