*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Inter','Segoe UI',sans-serif;
}

body{
    background:#0f1115;
    color:#ffffff;
    overflow-x:hidden;
}

header{
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
    padding:20px;
    background: linear-gradient(135deg, #0f1115 0%, #1b1f26 50%, #0f1115 100%);
    position:relative;
    overflow:hidden;
}

header::before{
    content:'';
    position:absolute;
    width:500px;
    height:500px;
    background:radial-gradient(circle, rgba(123,97,255,0.15) 0%, transparent 70%);
    border-radius:50%;
    top:-200px;
    right:-200px;
}

header::after{
    content:'';
    position:absolute;
    width:400px;
    height:400px;
    background:radial-gradient(circle, rgba(123,97,255,0.1) 0%, transparent 70%);
    border-radius:50%;
    bottom:-150px;
    left:-150px;
}

.hero{
    max-width:900px;
    z-index:1;
    animation: slideUp 1s ease-out;
}

@keyframes slideUp{
    from{
        opacity:0;
        transform:translateY(50px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

.logo{
    width:240px;
    height:240px;
    object-fit:contain;
    margin-bottom:30px;
    filter:drop-shadow(0 20px 40px rgba(123,97,255,0.2));
    animation: float 3s ease-in-out infinite;
}

@keyframes float{
    0%, 100%{
        transform:translateY(0px);
    }
    50%{
        transform:translateY(-20px);
    }
}

.hero h1{
    font-size:4.5rem;
    margin-bottom:20px;
    font-weight:800;
    background:linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
    letter-spacing:-1px;
}

.hero p{
    font-size:1.3rem;
    color:#cbd5e1;
    margin-bottom:40px;
    line-height:1.6;
    font-weight:300;
}

.btn{
    display:inline-block;
    padding:16px 40px;
    background:linear-gradient(135deg, #7b61ff 0%, #6b4fee 100%);
    color:white;
    text-decoration:none;
    border-radius:12px;
    transition:all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight:600;
    font-size:1rem;
    box-shadow:0 10px 30px rgba(123,97,255,0.3);
    border:none;
    cursor:pointer;
    position:relative;
    overflow:hidden;
}

.btn::before{
    content:'';
    position:absolute;
    top:50%;
    left:50%;
    width:0;
    height:0;
    background:rgba(255,255,255,0.2);
    border-radius:50%;
    transform:translate(-50%,-50%);
    transition:width 0.6s, height 0.6s;
}

.btn:hover{
    transform:translateY(-4px);
    box-shadow:0 20px 50px rgba(123,97,255,0.4);
}

.btn:hover::before{
    width:300px;
    height:300px;
}

.features{
    padding:120px 10%;
    background:#0f1115;
    position:relative;
}

.features::before{
    content:'';
    position:absolute;
    width:300px;
    height:300px;
    background:radial-gradient(circle, rgba(123,97,255,0.1) 0%, transparent 70%);
    border-radius:50%;
    top:5%;
    left:5%;
}

.section-title{
    text-align:center;
    font-size:3rem;
    margin-bottom:80px;
    font-weight:700;
    color:#ffffff;
}

.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:30px;
}

.card{
    background:linear-gradient(135deg, #1b1f26 0%, #161a20 100%);
    padding:40px;
    border-radius:20px;
    transition:all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border:1px solid rgba(123,97,255,0.15);
    backdrop-filter:blur(10px);
    position:relative;
    overflow:hidden;
}

.card::before{
    content:'';
    position:absolute;
    top:0;
    left:0;
    right:0;
    bottom:0;
    background:linear-gradient(135deg, rgba(123,97,255,0.1) 0%, transparent 100%);
    opacity:0;
    transition:opacity 0.4s;
}

.card:hover{
    transform:translateY(-8px);
    border-color:rgba(123,97,255,0.3);
    box-shadow:0 20px 50px rgba(123,97,255,0.15);
}

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

.card h3{
    margin-bottom:15px;
    font-size:1.4rem;
    font-weight:600;
    color:#ffffff;
    position:relative;
    z-index:1;
}

.card p{
    color:#cbd5e1;
    line-height:1.6;
    position:relative;
    z-index:1;
    font-weight:300;
}

.screenshots{
    padding:120px 10%;
    text-align:center;
    background:linear-gradient(135deg, #0f1115 0%, #1b1f26 100%);
    position:relative;
}

.phone-container{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:40px;
}

.phone{
    width:280px;
    height:560px;
    background:linear-gradient(135deg, #1b1f26 0%, #0f1115 100%);
    border-radius:40px;
    border:12px solid #2a2f37;
    overflow:hidden;
    transition:all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:0 20px 60px rgba(0,0,0,0.4);
    position:relative;
}

.phone::before{
    content:'';
    position:absolute;
    top:0;
    left:50%;
    transform:translateX(-50%);
    width:150px;
    height:25px;
    background:#0f1115;
    border-radius:0 0 30px 30px;
    z-index:10;
}

.phone:hover{
    transform:translateY(-12px);
    box-shadow:0 30px 80px rgba(123,97,255,0.2);
}

.phone img{
    width:100%;
    height:100%;
    object-fit:cover;
}

.about{
    padding:120px 10%;
    text-align:center;
    background:#0f1115;
    position:relative;
}

.about::before{
    content:'';
    position:absolute;
    width:400px;
    height:400px;
    background:radial-gradient(circle, rgba(123,97,255,0.08) 0%, transparent 70%);
    border-radius:50%;
    top:50%;
    right:5%;
    transform:translateY(-50%);
}

.about p{
    max-width:800px;
    margin:auto;
    color:#cbd5e1;
    font-size:1.15rem;
    line-height:1.8;
    font-weight:300;
    position:relative;
    z-index:1;
}

.cta{
    padding:140px 20px;
    text-align:center;
    background:linear-gradient(135deg, #1b1f26 0%, #0f1115 100%);
    position:relative;
    overflow:hidden;
}

.cta::before{
    content:'';
    position:absolute;
    width:600px;
    height:600px;
    background:radial-gradient(circle, rgba(123,97,255,0.15) 0%, transparent 70%);
    border-radius:50%;
    top:-200px;
    left:-200px;
}

.cta::after{
    content:'';
    position:absolute;
    width:500px;
    height:500px;
    background:radial-gradient(circle, rgba(123,97,255,0.1) 0%, transparent 70%);
    border-radius:50%;
    bottom:-200px;
    right:-200px;
}

.cta h2{
    font-size:3.5rem;
    margin-bottom:30px;
    font-weight:700;
    background:linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
    position:relative;
    z-index:1;
}

footer{
    padding:40px;
    text-align:center;
    color:#64748b;
    border-top:1px solid rgba(123,97,255,0.1);
    background:#0f1115;
    font-weight:300;
}

.fade{
    opacity:0;
    transform:translateY(30px);
    transition:0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade.show{
    opacity:1;
    transform:translateY(0);
}

@media (max-width:768px){
    /* ensure header doesn't get covered by nav on small screens */
    header{ margin-top:110px; min-height:calc(100vh - 110px); }
}

header{
    margin-top:70px;
    min-height:calc(100vh - 70px);
    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
    padding:20px;
    background: linear-gradient(135deg, #0f1115 0%, #1b1f26 50%, #0f1115 100%);
    position:relative;
    overflow:hidden;
}

@media (max-width:768px){

    .hero h1{
        font-size:2.5rem;
    }
    
    .hero p{
        font-size:1.1rem;
    }
    
    .section-title{
        font-size:2rem;
        margin-bottom:50px;
    }
    
    .cta h2{
        font-size:2rem;
    }
    
    .logo{
        width:160px;
        height:160px;
    }
}
/* Плавный скролл */
html{ scroll-behavior: smooth; }

/* Плавные переходы фона для секций */
header, .features, .screenshots, .about, .cta{
    transition: background 0.9s ease, background-position 0.9s ease, color 0.6s ease;
}

/* Overlay для перехода между страницами */
#page-transition{
    position:fixed;
    inset:0;
    background:#0f1115;
    z-index:2000;
    pointer-events:none;
    opacity:1;
    transition:opacity 0.55s ease;
}
#page-transition.hidden{ opacity:0; }

.lang-btn{
    background:transparent;
    border:0;
    color:#cbd5e1;
    cursor:pointer;
    font-weight:500;
    transition:all 0.3s ease;
    padding: 5px 5px;
    border-radius: 5px;
}
.lang-switch{
    display:flex;
    gap:8px;
    align-items:center;
}
.lang-btn:active{
    color:#ffffff;
    font-weight:700;
    background: #5a3ddc;
}
.lang-btn:hover{
    color:#ffffff;
    transform: translateY(-1px);
    background: #7b61ff1a;
}