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

body{
    font-family:Inter,sans-serif;
    background:
    radial-gradient(circle at top left,#3b82f655,transparent 35%),
    radial-gradient(circle at bottom right,#7c3aed55,transparent 40%),
    #0d1117;
    color:#fff;
    overflow-x:hidden;
    position:relative;
}

body::before{
    content:"";
    position:fixed;
    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;
    opacity:.35;
    pointer-events:none;
    z-index:0;
}

/* Navbar */

nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 9%;
    background:rgba(22,27,34,.85);
    backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(255,255,255,.08);
    position:sticky;
    top:0;
    z-index:100;
}

.logo{
    font-size:28px;
    font-weight:800;
    background:linear-gradient(135deg,#60a5fa,#a78bfa);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    letter-spacing:1px;
}

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

.nav-links a{
    text-decoration:none;
    color:#9ca3af;
    font-weight:500;
    transition:.3s;
    position:relative;
}

.nav-links a::after{
    content:"";
    position:absolute;
    bottom:-4px;
    left:0;
    width:0;
    height:2px;
    background:linear-gradient(135deg,#60a5fa,#a78bfa);
    transition:.3s;
}

.nav-links a:hover{
    color:#fff;
}

.nav-links a:hover::after{
    width:100%;
}

.buttons{
    display:flex;
    gap:15px;
    align-items:center;
}

.login{
    text-decoration:none;
    color:#60a5fa;
    font-weight:600;
    transition:.3s;
    padding:10px 20px;
    border-radius:10px;
}

.login:hover{
    background:rgba(59,130,246,.1);
}

.signup{
    background:linear-gradient(135deg,#3b82f6,#6366f1);
    color:white;
    padding:12px 24px;
    border-radius:12px;
    text-decoration:none;
    font-weight:600;
    transition:.3s;
    box-shadow:0 4px 15px rgba(59,130,246,.3);
}

.signup:hover{
    transform:translateY(-2px);
    box-shadow:0 8px 25px rgba(59,130,246,.4);
}

/* Hero */

.hero{
    display:flex;
    justify-content:center;
    align-items:center;
    padding:120px 9%;
    position:relative;
    z-index:1;
}

.hero-text{
    flex:1;
    max-width:800px;
}

.badge{
    display:inline-block;
    background:rgba(59,130,246,.15);
    color:#60a5fa;
    padding:10px 20px;
    border-radius:30px;
    font-weight:600;
    margin-bottom:30px;
    border:1px solid rgba(59,130,246,.25);
    animation:fadeInUp .6s ease;
}

.hero h1{
    font-size:64px;
    line-height:1.15;
    margin-bottom:25px;
    font-weight:800;
    animation:fadeInUp .6s ease .1s backwards;
    background:linear-gradient(135deg,#fff,#cbd5e1);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.hero p{
    color:#9ca3af;
    font-size:18px;
    line-height:1.8;
    margin-bottom:40px;
    max-width:650px;
    animation:fadeInUp .6s ease .2s backwards;
}

.hero-buttons{
    display:flex;
    gap:20px;
    animation:fadeInUp .6s ease .3s backwards;
}

.primary{
    background:linear-gradient(135deg,#3b82f6,#6366f1);
    color:white;
    padding:16px 32px;
    border-radius:14px;
    text-decoration:none;
    font-weight:600;
    transition:.3s;
    box-shadow:0 4px 20px rgba(59,130,246,.35);
}

.primary:hover{
    transform:translateY(-3px);
    box-shadow:0 12px 35px rgba(59,130,246,.5);
}

.secondary{
    border:2px solid rgba(59,130,246,.5);
    color:#60a5fa;
    padding:16px 32px;
    border-radius:14px;
    text-decoration:none;
    font-weight:600;
    transition:.3s;
}

.secondary:hover{
    background:rgba(59,130,246,.1);
    border-color:#60a5fa;
    transform:translateY(-3px);
}

/* Features */

.features{
    padding:120px 9%;
    text-align:center;
    position:relative;
    z-index:1;
}

.features h2{
    font-size:42px;
    font-weight:800;
    margin-bottom:15px;
    background:linear-gradient(135deg,#fff,#cbd5e1);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.features>p{
    color:#9ca3af;
    font-size:18px;
}

.cards{
    margin-top:60px;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
    gap:25px;
}

.card{
    background:rgba(22,27,34,.75);
    backdrop-filter:blur(20px);
    border:1px solid rgba(255,255,255,.08);
    padding:40px 30px;
    border-radius:20px;
    transition:.3s;
    position:relative;
    overflow:hidden;
}

.card::before{
    content:"";
    position:absolute;
    inset:-1px;
    border-radius:20px;
    padding:1px;
    background:linear-gradient(135deg,#3b82f6,#7c3aed,#06b6d4);
    -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
    -webkit-mask-composite:xor;
    mask-composite:exclude;
    pointer-events:none;
    opacity:0;
    transition:.3s;
}

.card:hover{
    transform:translateY(-8px);
    box-shadow:0 20px 60px rgba(59,130,246,.2);
}

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

.card h3{
    margin-bottom:15px;
    font-size:22px;
    color:#fff;
}

.card p{
    color:#9ca3af;
    line-height:1.7;
    font-size:15px;
}

/* About */

.about{
    padding:120px 9%;
    text-align:center;
    position:relative;
    z-index:1;
}

.about .content{
    max-width:800px;
    margin:auto;
}

.about h2{
    font-size:45px;
    margin-bottom:25px;
    font-weight:800;
    background:linear-gradient(135deg,#fff,#cbd5e1);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.about p{
    color:#9ca3af;
    line-height:1.9;
    margin-bottom:40px;
    font-size:17px;
}

/* Footer */

footer{
    background:rgba(22,27,34,.95);
    backdrop-filter:blur(20px);
    border-top:1px solid rgba(255,255,255,.08);
    text-align:center;
    padding:60px;
    position:relative;
    z-index:1;
}

footer h3{
    font-size:24px;
    font-weight:700;
    margin-bottom:10px;
    background:linear-gradient(135deg,#60a5fa,#a78bfa);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

footer p{
    color:#9ca3af;
    margin:15px 0;
}

footer span{
    color:#6b7280;
    font-size:14px;
}

/* Animations */

@keyframes fadeInUp{
    from{
        opacity:0;
        transform:translateY(30px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

/* Responsive */

@media(max-width:900px){
    .hero{
        flex-direction:column;
        text-align:center;
        padding:80px 5%;
    }

    .hero h1{
        font-size:42px;
    }
    
    .hero p{
        max-width:100%;
        margin-left:auto;
        margin-right:auto;
    }

    .hero-buttons{
        justify-content:center;
    }

    nav{
        flex-direction:column;
        gap:20px;
    }
    
    .nav-links{
        gap:20px;
    }
    
    .features{
        padding:80px 5%;
    }
    
    .features h2{
        font-size:34px;
    }
    
    .about{
        padding:80px 5%;
    }
    
    .about h2{
        font-size:34px;
    }
    
    .cards{
        grid-template-columns:1fr;
    }
}