:root {
    /* Random Palette: Deep Tech */
    --bg-color: #0b1120;
    --bg-secondary: #151e32;
    --primary-color: #00f2ff;
    /* Cyan neon */
    --accent-color: #7000ff;
    /* Electric purple */
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --white: #ffffff;
    --modal-bg: #1e293b;

    --font-main: 'Exo 2', sans-serif;
    --transition: all 0.3s ease;
    --container-width: 1200px;
    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    font-size: 1rem;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn--primary {
    background: linear-gradient(135deg, var(--accent-color), #4c1d95);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(112, 0, 255, 0.4);
}

.btn--primary:hover {
    box-shadow: 0 6px 20px rgba(112, 0, 255, 0.6);
    transform: translateY(-2px);
}

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

.btn--outline:hover {
    background: rgba(0, 242, 255, 0.1);
}

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

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

.section {
    padding: 80px 0;
}

/* --- FIXED TITLES --- */
.section__title {
    text-align: center;
    /* Центрируем текст внутри блока */
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--white);
    position: relative;
    width: 100%;
    /* Занимает всю ширину контейнера */
    display: block;
}

.section__title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    /* Центрируем линию относительно родителя */
}

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

.section__title--left::after {
    left: 0;
    transform: none;
}

/* ------------------- */

/* Header */
.header {
    background-color: rgba(11, 17, 32, 0.95);
    backdrop-filter: blur(10px);
    height: var(--header-height);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

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

.logo:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav__list {
    display: flex;
    gap: 30px;
}

.nav__link {
    transition: var(--transition);
}

.nav__link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Кнопка бургер */
.burger {
    display: none;
    /* За замовчуванням прихована на десктопі */
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    /* Важливо: має бути вище, ніж меню навігації */
}

.burger span {
    display: block;
    width: 30px;
    height: 3px;
    background-color: var(--white);
    margin: 5px 0;
    transition: all 0.3s ease-in-out;
    /* Плавна анімація */
    border-radius: 2px;
}

/* --- Анімація перетворення на Хрестик --- */

/* Приховуємо середню лінію */
.burger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
    /* Ефект зникнення вбік */
}

/* Верхня лінія: опускаємо вниз і повертаємо на 45 градусів */
.burger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

/* Нижня лінія: піднімаємо вгору і повертаємо на -45 градусів */
.burger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background: url('images/hero-bg.jpg') no-repeat center/cover;
    position: relative;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(11, 17, 32, 0.95) 0%, rgba(11, 17, 32, 0.6) 100%);
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    transition: var(--transition);
}

.badge:hover {
    background: rgba(0, 242, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 242, 255, 0.3);
}

.hero__title {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--white);
    line-height: 1.2;
}

.hero__subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

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

/* Features */
.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 242, 255, 0.2);
}

.feature-card__icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: block;
    transition: var(--transition);
}

.feature-card:hover .feature-card__icon {
    transform: scale(1.1);
    color: var(--accent-color);
}

.feature-card h3 {
    color: var(--white);
    margin-bottom: 10px;
    text-align: center;
}

.feature-card p {
    text-align: center;
}

/* Services */
.services__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.service-item {
    background: var(--bg-secondary);
    padding: 40px 20px;
    text-align: center;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.service-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0, 242, 255, 0.15);
}

.service-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-color);
}

.service-item h3 {
    color: var(--white);
    margin-bottom: 15px;
    text-align: center;
}

.service-item p {
    text-align: center;
}

.cta-banner {
    text-align: center;
    background: linear-gradient(135deg, var(--bg-secondary), #1e293b);
    padding: 30px;
    border-radius: 10px;
    border-left: 5px solid var(--primary-color);
    transition: var(--transition);
}

.cta-banner:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 242, 255, 0.2);
    border-left-color: var(--accent-color);
}

/* Reviews */
.reviews__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 10px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.review-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0, 242, 255, 0.15);
}

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

.review-card__avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #fff;
    font-size: 1.2rem;
    flex-shrink: 0;
    overflow: hidden;
    transition: var(--transition);
}

.review-card:hover .review-card__avatar {
    transform: scale(1.1);
}

.stars {
    color: gold;
    font-size: 0.9rem;
}

/* Contact */
.contact__wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact__list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    transition: var(--transition);
    margin-top: 10px;
}

.contact__list li:hover {
    transform: translateX(5px);
}

.contact__list i {
    color: var(--primary-color);
    transition: var(--transition);
}

.contact__list li:hover i {
    color: var(--accent-color);
    transform: scale(1.2);
}

.contact__list li:hover {
    transform: translateX(5px);
}

.contact__form {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 10px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact__form:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(0, 242, 255, 0.1);
}

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

.form-group input {
    width: 100%;
    padding: 12px 10px;
    background: transparent;
    border: none;
    border-bottom: 2px solid #334155;
    color: var(--white);
    outline: none;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: var(--primary-color);
}

.form-group label {
    position: absolute;
    top: 12px;
    left: 10px;
    color: var(--text-muted);
    transition: var(--transition);
    pointer-events: none;
}

.form-group input:focus~label,
.form-group input:not(:placeholder-shown)~label {
    top: -15px;
    left: 0;
    font-size: 0.8rem;
    color: var(--primary-color);
}

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

.captcha-group input {
    width: 60px;
    padding: 8px;
    text-align: center;
    background: var(--bg-color);
    border: 1px solid #334155;
    color: white;
    transition: var(--transition);
}

.captcha-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 242, 255, 0.3);
}

.form-message {
    margin-top: 15px;
    text-align: center;
    font-weight: 600;
}

/* Footer */
.footer {
    background: #050914;
    padding: 60px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.logo--footer {
    margin-bottom: 20px;
}

.footer h4 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer ul li a {
    color: var(--text-muted);
}

.footer ul li a {
    transition: var(--transition);
}

.footer ul li a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer__bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    font-size: 0.9rem;
    color: #64748b;
}

/* Modals */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--modal-bg);
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    border-radius: 10px;
    z-index: 2001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
}

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

.modal__content {
    position: relative;
    padding: 40px;
    display: flex;
    flex-direction: column;
    height: 100%;
    max-height: 90vh;
    overflow: hidden;
}

.modal__close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal__close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-color);
    transform: rotate(90deg) scale(1.1);
}

.modal__body {
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 15px;
    flex: 1;
    max-height: calc(90vh - 100px);
}

.modal__body::-webkit-scrollbar {
    width: 6px;
}

.modal__body::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.modal__body::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.modal__body::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

.modal__body h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.modal__body h4 {
    margin-top: 25px;
    margin-bottom: 15px;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
}

.modal__body p,
.modal__body ul,
.modal__body ol {
    margin-bottom: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

.modal__body ul,
.modal__body ol {
    list-style: disc;
    padding-left: 25px;
    margin-bottom: 20px;
}

.modal__body ol {
    list-style: decimal;
}

.modal__body li {
    margin-bottom: 8px;
    line-height: 1.6;
}

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

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

.modal__body strong {
    color: var(--white);
    font-weight: 600;
}

/* Mobile Media Queries */
@media (max-width: 1024px) {
    .burger {
        display: block;
        z-index: 1001;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-color);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: 0.4s ease;
        z-index: 1000;
    }

    .nav.active {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        text-align: center;
        font-size: 1.5rem;
    }
}

@media (max-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero__title {
        font-size: 2.2rem;
    }

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

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

    .modal {
        width: 95%;
        max-width: 95%;
        max-height: 95vh;
    }

    .modal__content {
        padding: 25px 20px;
        max-height: 95vh;
    }

    .modal__body {
        max-height: calc(95vh - 80px);
        padding-right: 5px;
    }

    .modal__body h3 {
        font-size: 1.3rem;
    }

    .modal__body h4 {
        font-size: 1.1rem;
    }
}