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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Inter',sans-serif;
    background:#f7f7f8;
    color:#222;
    line-height:1.6;
}

/* ---------- Header ---------- */

header{
    position:sticky;
    top:0;
    background:white;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 8%;
    box-shadow:0 2px 12px rgba(0,0,0,.08);
    z-index:100;
}

.logo{
    font-size:30px;
    font-weight:800;
    color:#D32F2F;
}

nav{
    display:flex;
    gap:30px;
}

nav a{
    text-decoration:none;
    color:#444;
    font-weight:600;
    transition:.25s;
}

nav a:hover{
    color:#D32F2F;
}

/* ---------- Hero ---------- */

.hero{

    min-height:80vh;

    display:flex;
    flex-direction:column;

    justify-content:center;
    align-items:center;

    text-align:center;

    padding:80px 20px;

    background:
    linear-gradient(
        180deg,
        #ffffff,
        #f3f4f6
    );

}

.hero h1{

    font-size:56px;

    font-weight:800;

    max-width:850px;

    margin-bottom:20px;

}

.hero p{

    font-size:22px;

    color:#666;

    max-width:700px;

}

.hero-buttons{

    margin-top:40px;

}

.primary-button{

    display:inline-block;

    padding:16px 36px;

    background:#D32F2F;

    color:white;

    border-radius:14px;

    text-decoration:none;

    font-weight:700;

    transition:.25s;

    box-shadow:
    0 10px 24px rgba(211,47,47,.35);

}

.primary-button:hover{

    transform:translateY(-4px);

    background:#b71c1c;

}

/* ---------- Sections ---------- */

section{

    padding:90px 8%;

}

section h2{

    text-align:center;

    font-size:42px;

    margin-bottom:50px;

}

/* ---------- Features ---------- */

.feature-grid{

    display:grid;

    grid-template-columns:
    repeat(auto-fit,minmax(260px,1fr));

    gap:30px;

}

.card{

    background:white;

    border-radius:18px;

    padding:35px;

    box-shadow:
    0 10px 25px rgba(0,0,0,.08);

    transition:.25s;

}

.card:hover{

    transform:translateY(-8px);

}

.card h3{

    margin-bottom:18px;

    color:#D32F2F;

    font-size:24px;

}

/* ---------- Screenshots ---------- */

#screenshots{

    text-align:center;

}

/* ---------- CTA ---------- */

.cta{

    background:#D32F2F;

    color:white;

    text-align:center;

}

.cta h2{

    color:white;

    margin-bottom:20px;

}

.cta p{

    max-width:700px;

    margin:auto;

    font-size:20px;

}

/* ---------- Footer ---------- */

footer{

    background:#222;

    color:white;

    text-align:center;

    padding:30px;

}

/* ---------- Mobile ---------- */

@media(max-width:768px){

    header{

        flex-direction:column;

        gap:20px;

    }

    nav{

        flex-wrap:wrap;

        justify-content:center;

        gap:18px;

    }

    .hero h1{

        font-size:38px;

    }

    .hero p{

        font-size:18px;

    }

    section h2{

        font-size:34px;

    }
/* ---------- Screenshot Mockups ---------- */

.subtext{
    text-align:center;
    color:#666;
    margin-top:-30px;
    margin-bottom:50px;
    font-size:18px;
}

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

.phone-mockup{
    width:220px;
    height:420px;
    background:#111;
    border-radius:40px;
    padding:12px;
    box-shadow:0 20px 40px rgba(0,0,0,.25);
    transition:.3s;
}

.phone-mockup:hover{
    transform:translateY(-10px);
}

.screen{
    width:100%;
    height:100%;
    background:white;
    border-radius:30px;
    display:flex;
    justify-content:center;
    align-items:center;
    font-weight:600;
    color:#D32F2F;
    font-size:18px;
    text-align:center;
    padding:20px;
}

}