:root {
    --primary-neon: #B9FF3B;
    --dark-bg: #3E4147;
    --dark-bg-2: #2E3136;
    --text-main: #FFFFFF;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-main);
}

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

a:hover {
    text-decoration: underline;
}

.hero {
    background: linear-gradient(135deg, #3E4147 0%, #2E3136 60%, #212329 100%);
    padding: 24px 32px 72px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("img/header-tech.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.10;
    filter: blur(0.5px);
    pointer-events: none;
}

.hero-inner {
    max-width: 1120px;
    margin: 0 auto 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 800;
    letter-spacing: 0.18em;
    font-size: 0.95rem;
    text-transform: uppercase;
}

.nav a {
    margin-left: 24px;
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-content {
    max-width: 1120px;
    margin: 0 auto;
}

.hero-text {
    max-width: 640px;
}

.hero-text h1 {
    font-size: 2.4rem;
    margin: 0 0 16px;
    text-transform: none;
    letter-spacing: 0.02em;
}

.hero-text p {
    margin: 0 0 24px;
    line-height: 1.6;
    color: #d5d7dd;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 999px;
    background-color: var(--primary-neon);
    color: #000;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.1s ease, box-shadow 0.1s ease, background-color 0.15s ease;
}

.btn-primary:hover {
    background-color: #d4ff7b;
    box-shadow: 0 0 16px rgba(185, 255, 59, 0.5);
    text-decoration: none;
    transform: translateY(-1px);
}

.hero-note {
    font-size: 0.8rem;
    color: #c1c4cc;
}

.section {
    max-width: 1120px;
    margin: 0 auto;
    padding: 48px 32px;
}

.section-alt {
    background-color: var(--dark-bg-2);
}

.section-header h2 {
    margin: 0 0 24px;
    font-size: 1.5rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.card {
    background-color: #363941;
    border-radius: 12px;
    padding: 18px 20px;
    border: 1px solid rgba(185, 255, 59, 0.1);
}

.card-outline {
    background-color: transparent;
    border-color: rgba(185, 255, 59, 0.4);
}

.card h3 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.card p {
    margin: 0;
    font-size: 0.9rem;
    color: #d5d7dd;
}

.screens-placeholder {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.screen-card {
    background-color: #363941;
    border-radius: 12px;
    padding: 16px 18px;
    border: 1px solid rgba(185, 255, 59, 0.2);
}

.screen-img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 12px;
    object-fit: cover;
}

.screen-mock {
    height: 140px;
    border-radius: 8px;
    background: radial-gradient(circle at 10% 20%, #B9FF3B 0, #42464f 45%, #2E3136 100%);
    margin-bottom: 12px;
}

.screen-card p {
    margin: 0;
    font-size: 0.85rem;
    color: #e0e2e8;
}

.center {
    text-align: center;
    margin-top: 8px;
}

.future-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.future-section {
    position: relative;
    overflow: hidden;
}

.future-section::before {
    content: "";
    position: absolute;
    inset: -40%;
    background: radial-gradient(circle at 0 0, rgba(185, 255, 59, 0.12), transparent 55%);
    opacity: 0.9;
    pointer-events: none;
}

.future-item {
    position: relative;
    background-color: #363941;
    border-radius: 14px;
    padding: 18px 20px;
    border: 1px solid rgba(185, 255, 59, 0.25);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(4px);
}

.future-item h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.future-item p {
    margin: 0;
    font-size: 0.9rem;
    color: #d5d7dd;
}

.future-item-highlight {
    border-color: var(--primary-neon);
    box-shadow: 0 0 24px rgba(185, 255, 59, 0.35);
}

.contacts {
    margin-top: 16px;
    font-size: 0.9rem;
    color: #d5d7dd;
}

.footer {
    border-top: 1px solid #555a65;
    background-color: #2E3136;
    padding: 12px 24px;
}

.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: #c1c4cc;
}

.footer-inner a {
    font-weight: 600;
}

@media (max-width: 768px) {
    .hero {
        padding: 16px 16px 56px;
    }

    .hero-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .nav a {
        margin-left: 0;
        margin-right: 16px;
    }

    .hero-text h1 {
        font-size: 1.8rem;
    }

    .section {
        padding: 32px 16px;
    }
}