:root {
    --primary: #FF8C00;
    --black: #1a1a1a;
    --dark-bg: #0f0f0f;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Onest', sans-serif; color: var(--black); line-height: 1.6; background: #fff; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    background: rgba(26, 26, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    height: 80px;
    display: flex;
    align-items: center;
    width: 100%;
}
.header .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.logo { font-size: 24px; font-weight: 800; color: #fff; text-decoration: none; }
.logo span { color: var(--primary); }
.nav a { color: #fff; text-decoration: none; margin: 0 15px; font-weight: 500; transition: var(--transition); }
.nav a:hover { color: var(--primary); }
.phone { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.1rem; transition: var(--transition); }
.phone:hover { color: var(--primary); }

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1100;
}
.burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}
.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); }

.mobile-phone { display: none; }

.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    background: #0f0f0f;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
    padding-top: 80px;
}
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}
.hero-content {
    position: relative;
    z-index: 2;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.hero-logo {
    width: 150px;
    height: auto;
    margin-bottom: 14px;
}
.hero h1 { font-size: 3.5rem; margin-bottom: 20px; font-family: 'Montserrat'; font-weight: 700; line-height: 1.1; }
.hero p { max-width: 800px; margin: 0 auto; color: #ddd; font-size: 1.1rem; }
.hero-btns { margin-top: 30px; pointer-events: auto; display: flex; gap: 16px; justify-content: center; }

#particles-js canvas,
#particles-contacts canvas {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
}

.btn { padding: 12px 28px; border-radius: 4px; cursor: pointer; font-weight: 700; text-decoration: none; border: none; transition: var(--transition); display: inline-block; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #e67e00; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 140, 0, 0.4); }
.btn-outline-hero {
    display: inline-block;
    padding: 12px 28px;
    border: 2px solid var(--primary);
    border-radius: 4px;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    background: transparent;
    transition: var(--transition);
    text-align: center;
}
.btn-outline-hero:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 140, 0, 0.35);
}

.about { padding: 100px 0; }
.about-wrapper {
    display: flex;
    gap: 60px;
    align-items: center;
    justify-content: space-between;
}
.about-text { flex: 1; }
.subtitle { color: var(--primary); font-weight: 700; text-transform: uppercase; font-size: 14px; margin-bottom: 10px; display: block; }
.about-text h2 { font-family: 'Montserrat'; font-size: 2rem; margin-bottom: 20px; }
.about-text p { margin-bottom: 15px; color: #555; }

.about-principles { display: flex; flex-direction: column; gap: 16px; margin-top: 30px; }
.principle-item { display: flex; align-items: center; gap: 14px; }
.principle-icon {
    display: flex; align-items: center; justify-content: center;
    width: 28px; height: 28px; min-width: 28px;
    background: rgba(255, 140, 0, 0.1);
    color: var(--primary);
    font-weight: 800;
    font-size: 1rem;
    border-radius: 50%;
}
.principle-text { font-size: 1rem; font-weight: 600; color: var(--black); }
.stat-item { text-align: left; }
.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    font-family: 'Montserrat';
    border-bottom: 3px solid var(--primary);
    margin-bottom: 10px;
    padding-bottom: 5px;
}
.stat-desc { font-size: 1rem; color: var(--black); font-weight: 600; text-transform: uppercase; }

.about-gallery.slider {
    flex: 1;
    position: relative;
    height: 450px;
    min-width: 300px;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
}
.slider-track {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}
.slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}
.slide.active { opacity: 1; z-index: 1; }
.slide img { width: 100%; height: 100%; object-fit: cover; display: block; }

.slider-nav {
    position: absolute;
    top: 50%;
    width: 100%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 15px;
    z-index: 10;
    pointer-events: none;
}
.slider-btn {
    background: rgba(255, 140, 0, 0.8);
    color: white;
    border: none;
    width: 45px; height: 45px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition);
    pointer-events: auto;
}
.slider-btn:hover { background: rgba(255, 140, 0, 1); transform: scale(1.05); }

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}
.dot {
    width: 10px; height: 10px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}
.dot.active { background: var(--primary); width: 25px; border-radius: 10px; }

.services { padding: 100px 0; background: var(--black); color: #fff; }
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 60px; font-family: 'Montserrat'; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.service-card {
    background: #252525;
    padding: 40px;
    border-radius: 15px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.service-card:hover { transform: translateY(-10px); box-shadow: 0 10px 30px rgba(255, 140, 0, 0.3); }
.service-img { width: 70px; height: 70px; object-fit: contain; margin-bottom: 20px; }
.service-card h3 { color: var(--primary); margin-bottom: 15px; font-size: 1.4rem; }
.service-card p { color: #ccc; font-size: 0.95rem; }

.contacts-section { background-color: #f4f3ef; padding: 100px 0; }
.contacts-header { display: flex; flex-direction: column; align-items: flex-start; margin-bottom: 50px; gap: 15px; }
.contacts-header h2 { font-size: 3rem; font-family: 'Montserrat'; color: var(--black); }
.contacts-header p { color: #777; max-width: 600px; }

.contacts-card { display: flex; border-radius: 20px; overflow: hidden; background: #fff; box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08); }
.contacts-info {
    background: #0d0d0d;
    color: #fff;
    width: 45%;
    padding: 60px 50px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    justify-content: center;
}
.info-content-layer { position: relative; z-index: 2; width: 100%; }
.info-block { padding: 30px 0;  }
.info-label { display: block; font-size: 0.8rem; text-transform: uppercase; color: #777; margin-bottom: 10px; }
.info-value { display: block; font-size: 1.8rem; font-weight: 500; margin-bottom: 10px;  }
.info-link { color: var(--primary); text-decoration: none; border-bottom: 1px solid transparent; transition: var(--transition); }
.info-link:hover { border-color: var(--primary); }
.info-divider { height: 1px; background: rgba(255, 255, 255, 0.1); width: 100%; }

.contacts-form-wrapper { width: 55%; padding: 60px 50px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 700; margin-bottom: 10px; text-transform: uppercase; }
.form-group input, .form-group textarea {
    width: 100%; padding: 15px 20px; border: 1px solid #ddd; border-radius: 30px; font-family: inherit; font-size: 1rem; transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}
.form-group textarea { resize: none; min-height: 100px; max-width: 100%; }
.btn-submit {
    width: 100%; padding: 20px; background: var(--black); color: #fff; border-radius: 40px; cursor: pointer; font-weight: 700; font-size: 1rem; border: none; transition: var(--transition); letter-spacing: 0.5px;
}
.btn-submit:hover { background: var(--primary); box-shadow: 0 5px 15px rgba(255, 140, 0, 0.3); }
.privacy-text { font-size: 0.75rem; color: #888; margin-top: 15px; line-height: 1.4; font-weight: 300; text-align: center; }

.footer {
    background: #0d0d0d;
    padding: 40px 0;
}
.footer-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.footer-name {
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
}
.footer-unp {
    color: #888;
    font-size: 0.85rem;
}
.footer-address {
    color: #666;
    font-size: 0.8rem;
    max-width: 500px;
}
.footer-copy {
    color: #555;
    font-size: 0.8rem;
    margin-top: 4px;
}

@media (max-width: 768px) {
    .burger { display: flex; z-index: 1100; }
    .desktop-phone { display: none; }

    .nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        height: 100vh;
        height: 100dvh;
        background: #0f0f0f;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 28px;
        padding: 0 20px;
        padding-top: 80px;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1050;
    }
    .nav.open { transform: translateX(0); }

    .nav a:not(.mobile-phone) {
        display: block;
        font-size: 1.4rem;
        font-weight: 600;
        letter-spacing: 1px;
        color: #fff;
        text-decoration: none;
        text-align: center;
        border: none;
        background: none;
        padding: 0;
        width: auto;
        margin: 0;
        line-height: 1.4;
    }
    .nav a:not(.mobile-phone):hover {
        color: var(--primary);
        transform: none;
        box-shadow: none;
    }

    .mobile-phone {
        display: block !important;
        margin-top: 20px;
        padding-top: 25px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        font-size: 1.15rem !important;
        font-weight: 400 !important;
        letter-spacing: 0 !important;
        width: auto !important;
        color: #aaa !important;
        border: none !important;
        background: none !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    .hero-logo { width: 110px; margin-bottom: 10px; }
    .hero h1 { font-size: 2.2rem; }
    .hero-btns {
        flex-direction: column;
        align-items: center;
        gap: 14px;
    }
    .btn-outline-hero, .btn-primary { width: 100%; max-width: 280px; text-align: center; }

    .about-wrapper { flex-direction: column; gap: 40px; }
    .about-gallery.slider { width: 100%; height: 300px; min-width: 0; }
    .services-grid { grid-template-columns: 1fr; }
    .contacts-card { flex-direction: column; }
    .contacts-info, .contacts-form-wrapper { width: 100%; }
    .contacts-info { padding: 40px 30px; }
    .contacts-form-wrapper { padding: 40px 30px; }
    .info-value { font-size: 1.2rem; }

    .footer-address { font-size: 0.75rem; }
}

@media (max-width: 480px) {
    .nav a:not(.mobile-phone) { font-size: 1.2rem; }
    .logo { font-size: 18px; }
    .hero h1 { font-size: 1.8rem; }
    .contacts-header h2 { font-size: 2rem; }
    .hero-logo { width: 90px; margin-bottom: 8px; }
}

.form-success {
    color: #28a745;
    font-weight: 700;
    text-align: center;
    margin-top: 15px;
    font-size: 0.95rem;
    display: none;
}