:root{
    --bg:#0b1220;
    --bg-light:#101a2f;
    --accent:#00bfa5;
    --accent-hover:#00d7bb;
    --text:#ffffff;
    --text-muted:#94a3b8;
    --card:#121d35;
    --border:rgba(255,255,255,.08);
    --shadow:0 20px 60px rgba(0,0,0,.35);
    --radius:18px;
    --container:1280px;
}

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:Inter,Arial,sans-serif;
    background:#fff;
    color:#334155;
    line-height:1.7;
    overflow-x:hidden;
}

.container{
    width:100%;
    max-width:var(--container);
    margin:auto;
    padding:0 24px;
}

section{
    padding:110px 0;
}

h1, h2, h3 {
    color: #ffffff;
    line-height: 1.2;
}

.section-title{
    text-align:center;
    margin-bottom:20px;
}

.section-title h2{
    font-size:48px;
    margin-bottom:20px;
}

.section-title p{
    max-width:800px;
    margin:auto;
    color:#64748b;
}

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    text-decoration:none;
    border:none;
    cursor:pointer;
    transition:.3s;
    font-weight:600;
    border-radius:12px;
    padding:16px 30px;
}

.btn-primary{
    background:var(--accent);
    color:#fff;
}

.btn-primary:hover{
    background:var(--accent-hover);
    transform:translateY(-2px);
}

.btn-outline{
    border:1px solid rgba(255,255,255,.25);
    color:#fff;
}

.btn-outline:hover{
    background:rgba(255,255,255,.05);
}

header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:1000;
    backdrop-filter:blur(15px);
    background:rgba(11,18,32,.85);
    border-bottom:1px solid rgba(255,255,255,.05);
}

.header-inner{
    height:90px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}

.logo img{
    /* height:70px; */
}

.nav{
    display:flex;
    gap:35px;
}

.nav a{
    color:#fff;
    text-decoration:none;
    font-weight:500;
    transition:.3s;
}

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

.header-right{
    display:flex;
    align-items:center;
    gap:25px;
}

.contacts{
    text-align:right;
}

.contacts a{
    display:block;
    color:#fff;
    text-decoration:none;
    font-size:14px;
}

.burger{
    display:none;
    width:32px;
    flex-direction:column;
    gap:5px;
    cursor:pointer;
}

.burger span{
    height:3px;
    background:#fff;
    border-radius:5px;
}

.mobile-menu{
    position:fixed;
    top:90px;
    left:-100%;
    width:100%;
    background:#0f172a;
    transition:.4s;
    padding:25px;
}

.mobile-menu.active{
    left:0;
}

.mobile-menu a{
    display:block;
    color:#fff;
    text-decoration:none;
    padding:14px 0;
    border-bottom:1px solid rgba(255,255,255,.05);
}


/* ===== MOBILE FIX ===== */

@media (max-width: 900px) {

    .nav {
        display: none;
    }

    .contacts {
        display: none;
    }

    .header-right {
        gap: 15px;
    }

    .burger {
        display: flex;
    }

    /* кнопка остаётся, но не ломает шапку */
    .btn.btn-primary {
        padding: 10px 14px;
        font-size: 13px;
        white-space: nowrap;
    }
}

/* ещё более узкие экраны */
@media (max-width: 600px) {

    .header-inner {
        height: 70px;
    }

    .btn.btn-primary {
        display: none; /* если всё ещё тесно */
    }
}

.hero{
    position:relative;
    background:
    radial-gradient(circle at 20% 20%, rgba(0,191,165,.25), transparent 35%),
    radial-gradient(circle at 80% 20%, rgba(0,191,165,.18), transparent 35%),
    linear-gradient(135deg,#08111f,#101a2f);
    color:#fff;
    padding-top:180px;
    overflow:hidden;
}

.hero::before{
    content:'';
    position:absolute;
    inset:0;
    background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size:40px 40px;
}

.hero-grid{
    position:relative;
    display:grid;
    grid-template-columns:1.2fr 1fr;
    gap:80px;
    align-items:center;
}

.hero h1{
    color:#fff;
    font-size:68px;
    margin-bottom:25px;
}

.hero-subtitle{
    font-size:22px;
    color:#cbd5e1;
    max-width:700px;
    margin-bottom:40px;
}

.hero-buttons{
    display:flex;
    gap:15px;
    margin-bottom:50px;
    flex-wrap:wrap;
}

.hero-stats{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
}

.stat{
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    border-radius:16px;
    padding:20px;
}

.stat strong{
    display:block;
    color:#fff;
    font-size:28px;
}

.stat span{
    color:#94a3b8;
    font-size:14px;
}

.hero-card{
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    border-radius:24px;
    padding:40px;
    backdrop-filter:blur(10px);
}

.hero-card h3{
    color:#fff;
    margin-bottom:25px;
    font-size:24px;
}

.hero-card ul{
    list-style:none;
}

.hero-card li{
    padding:12px 0;
    color:#cbd5e1;
    border-bottom:1px solid rgba(255,255,255,.06);
}

.hero-card li:last-child{
    border:none;
}

@media(max-width:1100px){

.nav{
    display:none;
}

.contacts{
    display:none;
}

.burger{
    display:flex;
}

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

.hero h1{
    font-size:52px;
}

.hero-stats{
    grid-template-columns:repeat(2,1fr);
}

}

@media(max-width:768px){

section{
    padding:80px 0;
}

.hero{
    padding-top:140px;
}

.hero h1{
    font-size:40px;
}

.hero-subtitle{
    font-size:18px;
}

.hero-stats{
    grid-template-columns:1fr;
}

.hero-buttons .btn{
    width:100%;
}

}

/* ===== SERVICES SECTION ===== */

#services {
    padding: 100px 20px;
    background: #0f1115;
    color: #ffffff;
    font-family: Arial, sans-serif;
}

#services .container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Title */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: 700;
}

.section-title p {
    font-size: 16px;
    opacity: 0.75;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Grid */
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Card */
.service-card {
    background: #161a22;
    padding: 25px;
    border-radius: 14px;
    position: relative;
    transition: all 0.25s ease;
    border: 1px solid rgba(255,255,255,0.05);
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 200, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

/* Icon number */
.service-icon {
    font-size: 18px;
    font-weight: 700;
    color: #00c8ff;
    margin-bottom: 15px;
}

/* Title */
.service-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    line-height: 1.4;
}

/* Text */
.service-card p {
    font-size: 14px;
    opacity: 0.75;
    line-height: 1.6;
}

/* ===== RESPONSIVE ===== */

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

    .section-title h2 {
        font-size: 30px;
    }
}

@media (max-width: 600px) {
    #services {
        padding: 110px 15px;
    }

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

    .section-title h2 {
        font-size: 26px;
    }

    .service-card {
        padding: 20px;
    }
}

/* ===== OBJECTS SECTION ===== */

#objects {
    padding: 110px 20px;
    background: #f3f5f7;
    font-family: Arial, sans-serif;
    color: #111;
}

#objects .container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Title */
#objects .section-title {
    text-align: center;
    margin-bottom: 50px;
}

#objects .section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: 700;
}

#objects .section-title p {
    font-size: 16px;
    opacity: 0.7;
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Grid */
.objects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

/* Item */
.object-item {
    background: #ffffff;
    border-radius: 14px;
    padding: 22px 20px;
    border: 1px solid rgba(0,0,0,0.06);
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
    cursor: default;
}

/* subtle accent line */
.object-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: #00c8ff;
    opacity: 0;
    transition: 0.25s ease;
}

/* hover */
.object-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    border-color: rgba(0, 200, 255, 0.25);
}

.object-item:hover::before {
    opacity: 1;
}

/* text */
.object-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

/* ===== RESPONSIVE ===== */

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

    #objects .section-title h2 {
        font-size: 30px;
    }
}

@media (max-width: 600px) {
    #objects {
        padding: 110px 15px;
    }

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

    #objects .section-title h2 {
        font-size: 26px;
    }

    .object-item {
        padding: 18px;
    }
}

#objects h3 {
    color: #2e3440;
}

#objects h2 {
	color:#00bfa5;
}


/* ===== ADVANTAGES SECTION (DARK) ===== */

#advantages {
    padding: 100px 20px;
    background: #0b0d12;
    color: #ffffff;
    font-family: Arial, sans-serif;
}

#advantages .container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Title */
#advantages .section-title {
    text-align: center;
    margin-bottom: 50px;
}

#advantages .section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: 700;
}

#advantages .section-title p {
    font-size: 16px;
    opacity: 0.7;
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Card */
.advantage-card {
    background: linear-gradient(145deg, #141824, #10131a);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 25px;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

/* glow accent */
.advantage-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at top left,
        rgba(0, 200, 255, 0.12),
        transparent 60%
    );
    opacity: 0;
    transition: 0.3s ease;
}

/* hover */
.advantage-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 200, 255, 0.25);
    box-shadow: 0 15px 35px rgba(0,0,0,0.45);
}

.advantage-card:hover::before {
    opacity: 1;
}

/* text */
.advantage-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: 600;
    position: relative;
}

.advantage-card p {
    font-size: 14px;
    opacity: 0.75;
    line-height: 1.6;
    position: relative;
}

/* ===== RESPONSIVE ===== */

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

    #advantages .section-title h2 {
        font-size: 30px;
    }
}

@media (max-width: 600px) {
    #advantages {
        padding: 110px 15px;
    }

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

    #advantages .section-title h2 {
        font-size: 26px;
    }

    .advantage-card {
        padding: 20px;
    }
}



/* ===== STAGES SECTION (LIGHT) ===== */

#stages {
    padding: 100px 20px 20px;
    background: #f6f7f9;
    font-family: Arial, sans-serif;
    color: #111;
}

#stages .container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Title */
#stages .section-title.light {
    text-align: center;
    margin-bottom: 50px;
}

#stages .section-title.light h2 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: 700;
    color: #00bfa5;
}

#stages .section-title.light p {
    font-size: 16px;
    opacity: 0.7;
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Timeline grid */
.timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Item */
.timeline-item {
    background: #ffffff;
    border-radius: 16px;
    padding: 25px;
    border: 1px solid rgba(0,0,0,0.06);
    position: relative;
    transition: all 0.25s ease;
    overflow: hidden;
}

/* subtle top accent */
.timeline-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: linear-gradient(90deg, #00c8ff, #6a5cff);
    opacity: 0.6;
}

/* hover */
.timeline-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    border-color: rgba(0, 200, 255, 0.25);
}

/* step number */
.timeline-item span {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    color: #00a8d8;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

/* title */
.timeline-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: 600;
    color: #000;
}
/* text */
.timeline-item p {
    font-size: 14px;
    opacity: 0.75;
    line-height: 1.6;
}

/* ===== RESPONSIVE ===== */

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

    #stages .section-title.light h2 {
        font-size: 30px;
    }
}

@media (max-width: 600px) {
    #stages {
        padding: 110px 15px;
    }

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

    #stages .section-title.light h2 {
        font-size: 26px;
    }

    .timeline-item {
        padding: 20px;
    }
}

/* ===== REQUEST SECTION ===== */

#request {
    padding: 100px 20px;
    font-family: Arial, sans-serif;
    color: #fff;
}

/* container */
#request .container {
    max-width: 1100px;
    margin: 0 auto;
}

/* main box */
.request-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;

    background: linear-gradient(145deg, #141824, #10131a);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 18px;
    padding: 40px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

/* text side */
.request-box h2 {
    font-size: 34px;
    margin-bottom: 15px;
    font-weight: 700;
}

.request-box p {
    font-size: 15px;
    opacity: 0.75;
    line-height: 1.6;
    max-width: 420px;
}

/* form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* inputs */
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 15px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.03);
    color: #fff;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

/* focus */
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: rgba(0, 200, 255, 0.6);
    box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.15);
}

/* textarea */
.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

/* button */
.btn.btn-primary {
    background: linear-gradient(90deg, #00c8ff, #6a5cff);
    color: #fff;
    border: none;
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 200, 255, 0.25);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 900px) {
    .request-box {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .request-box p {
        margin: 0 auto;
    }
}

@media (max-width: 600px) {
    #request {
        padding: 110px 15px;
    }

    .request-box {
        padding: 25px;
    }

    .request-box h2 {
        font-size: 26px;
    }
}


/* ===== FOOTER ===== */

#footer {
    background: #0b0d12;
    color: #fff;
    padding: 70px 20px 30px;
    font-family: Arial, sans-serif;
    position: relative;
}

/* разделение от предыдущего блока */
.footer-divider {
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255,255,255,0.08),
        transparent
    );
    margin-bottom: 50px;
}

/* layout */
.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    gap: 40px;
}

/* left */
.footer-logo {
    width: 240px;
    height: 59px;
    object-fit: contain;
    margin-bottom: 18px;
}

.footer-contacts p {
    font-size: 14px;
    opacity: 0.7;
    margin: 6px 0;
}

/* right */
.footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 20px;
}

/* ===== MENU HORIZONTAL ===== */

.footer-menu {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.footer-menu a {
    font-size: 14px;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    transition: 0.2s;
    position: relative;
}

.footer-menu a:hover {
    color: #00c8ff;
}

/* underline hover */
.footer-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0%;
    height: 1px;
    background: #00c8ff;
    transition: 0.2s;
}

.footer-menu a:hover::after {
    width: 100%;
}

/* copyright */
.footer-copy {
    font-size: 13px;
    opacity: 0.45;
}

/* back to top */
.to-top {
    position: absolute;
    right: 20px;
    bottom: 20px;

    width: 44px;
    height: 44px;

    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.1);

    background: rgba(255,255,255,0.04);
    color: #fff;

    cursor: pointer;
    transition: 0.2s ease;
}

.to-top:hover {
    background: rgba(0, 200, 255, 0.12);
    border-color: rgba(0, 200, 255, 0.4);
    transform: translateY(-2px);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 900px) {
    .footer-top {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .footer-right {
        align-items: center;
    }

    .footer-menu {
        justify-content: center;
    }
}

.burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.burger span {
    transition: 0.3s ease;
}