/* Тёмная тема в стиле fsk.ru */
:root {
    --bg-main: #111216;
    --bg-secondary: #18191d;
    --text-main: #fff;
    --text-secondary: #bfc1c7;
    --accent: #00a3ff;
    --accent-hover: #0080c9;
    --border: #23242a;
    --card-bg: #18191d;
    --card-border: #23242a;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Arial', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Header */
.header {
    background: var(--bg-main);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
}
.header-top-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.logo-main {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 2px;
}
.header-contacts {
    display: flex;
    align-items: center;
    gap: 24px;
}
.header-phone {
    color: var(--text-main);
    font-weight: 600;
    font-size: 1.1rem;
}
.btn, .btn-primary {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    box-shadow: 0 2px 8px rgba(0,163,255,0.08);
}
.btn:hover, .btn-primary:hover {
    background: var(--accent-hover);
}
.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}
.btn-outline:hover {
    background: var(--accent);
    color: #fff;
}

.header-bottom {
    display: none;
}

/* Desktop меню */
@media (min-width: 1024px) {
    .header-bottom {
        display: block;
        border-top: 1px solid var(--border);
    }
    .nav {
        display: flex;
        justify-content: center;
    }
    .nav-list {
        display: flex;
        gap: 48px;
        height: 60px;
        align-items: center;
    }
    .nav-link {
        color: var(--text-main);
        font-size: 1.2rem;
        font-weight: 600;
        letter-spacing: 1px;
        padding: 8px 0;
        position: relative;
        transition: color 0.2s;
    }
    .nav-link:hover {
        color: var(--accent);
    }
    .nav-link::after {
        content: '';
        display: block;
        width: 0;
        height: 2px;
        background: var(--accent);
        transition: width 0.2s;
        margin: 0 auto;
    }
    .nav-link:hover::after {
        width: 100%;
    }
}

/* Burger */
.burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1002;
    gap: 8px;
}
.burger span {
    display: block;
    width: 32px;
    height: 4px;
    background: var(--text-main);
    border-radius: 2px;
    transition: all 0.3s;
}
.burger.active span:nth-child(1) { transform: rotate(45deg) translate(7px, 7px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(8px, -8px); }

/* Мобильное меню */
.mobile-menu-wrapper {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    pointer-events: none;
}
.mobile-menu-wrapper.active {
    display: flex;
    pointer-events: auto;
}
.mobile-menu-backdrop {
    flex: 1 1 auto;
    background: rgba(0,0,0,0.7);
    cursor: pointer;
}
.mobile-menu {
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    background: var(--bg-main);
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
}
.mobile-menu-wrapper.active .mobile-menu {
    transform: translateX(0);
}
.mobile-menu-header,
.mobile-menu-footer {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
    margin: 40px 0;
}
.mobile-nav-link, .mobile-nav-list .nav-link {
    color: var(--text-main);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 1px;
    transition: color 0.2s;
}
.mobile-nav-link:hover, .mobile-nav-list .nav-link:hover {
    color: var(--accent);
}
.mobile-menu-footer-left, .mobile-menu-footer-right {
    flex: 1 1 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Hero */
.hero {
    margin-top: 120px;
    height: 40vh;
    min-height: 320px;
    background: var(--bg-main) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: var(--text-main);
}
.hero-content {
    text-align: center;
    z-index: 2;
}
.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-main);
}
.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* Секции и карточки */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 32px;
    text-align: center;
}
.services, .about, .contact, .vacancies {
    background: var(--bg-secondary);
    border-radius: 24px;
    margin: 40px 0;
    padding: 48px 0;
    box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}
.service-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 32px 24px;
    color: var(--text-main);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: border 0.2s, box-shadow 0.2s;
}
.service-card:hover {
    border: 1.5px solid var(--accent);
    box-shadow: 0 4px 24px rgba(0,163,255,0.10);
}
.service-card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.service-card-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* About */
.about-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
    align-items: center;
}
.about-image {
    width: 100%;
    max-width: 400px;
    min-height: 220px;
    background-size: cover;
    background-position: center;
    border-radius: 16px;
}
.about-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Contact */
.contact-inner {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 24px;
}
.contact-input, .contact-textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid var(--card-border);
    border-radius: 8px;
    background: var(--bg-main);
    color: var(--text-main);
    font-size: 1rem;
}
.contact-input:focus, .contact-textarea:focus {
    border-color: var(--accent);
    outline: none;
}
.contact-textarea {
    min-height: 120px;
    resize: vertical;
}
.form-agreement {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.form-agreement a {
    color: var(--accent);
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--bg-main);
    color: var(--text-secondary);
    padding: 48px 0 24px;
    text-align: center;
    border-top: 1px solid var(--border);
}
.footer-top {
    display: flex;
    flex-direction: column;
    gap: 32px;
    align-items: center;
    margin-bottom: 24px;
}
.footer-col {
    margin-bottom: 16px;
}
.footer-title {
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.footer-list {
    list-style: none;
    padding: 0;
}
.footer-list li {
    margin-bottom: 8px;
}
.footer-list a {
    color: var(--text-secondary);
    transition: color 0.2s;
}
.footer-list a:hover {
    color: var(--accent);
}
.footer-social {
    display: flex;
    gap: 18px;
    justify-content: center;
    margin-top: 12px;
}
.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.5rem;
    transition: background 0.2s, color 0.2s;
}
.social-link:hover {
    background: var(--accent);
    color: #fff;
}
.footer-bottom {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 16px;
}
.footer-bottom a {
    color: var(--accent);
    text-decoration: underline;
}

/* Grid для карточек на планшетах и десктопах */
@media (min-width: 600px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-content {
        flex-direction: row;
        justify-content: center;
    }
    .about-image {
        max-width: 320px;
        min-height: 260px;
    }
}
@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .about-content {
        gap: 64px;
    }
    .hero {
        margin-top: 140px;
        height: 50vh;
        min-height: 400px;
    }
    .header-contacts .header-phone {
        font-size: 0.95rem;
        padding-right: 8px;
    }
    .header-contacts .btn, .header-contacts .btn-primary {
        font-size: 0.95rem;
        padding: 8px 18px;
    }
}
@media (max-width: 1023px) {
    .header-contacts {
        gap: 10px;
    }
    .header-contacts .header-phone {
        font-size: 0.85rem;
        padding-right: 0;
    }
    .header-contacts .btn, .header-contacts .btn-primary {
        font-size: 0.85rem;
        padding: 6px 10px;
        margin-right: 8px;
    }
    .logo-main {
        font-size: 0.7rem;
    }
    .mobile-nav-link, .mobile-nav-list .nav-link {
        font-size: 1rem;
    }
}