body{
    background:#0f172a;
    color:white;
    font-family:Inter,system-ui,sans-serif;
}

/* HERO */

.hero{
    background:
    radial-gradient(circle at top left,#6366f1,transparent 30%),
    radial-gradient(circle at bottom right,#06b6d4,transparent 30%),
    #0f172a;
}

.badge-custom{
    background:#6366f1;
    padding:10px 18px;
    border-radius:50px;
    font-weight:600;
}

.hero-title{
    font-size:3rem;
    font-weight:800;
    line-height:1.1;
}

.hero-subtitle{
    font-size:1.2rem;
    color:#cbd5e1;
}

.hero-list{
    list-style:none;
    padding:0;
    margin:30px 0;
}

.hero-list li{
    margin-bottom:10px;
}

.cta-btn{
    padding:15px 30px;
    border-radius:12px;
}

/* BROWSER MOCKUP */

.browser-mockup{
    background:#fff;
    border-radius:20px;
    overflow:hidden;
    box-shadow:0 20px 50px rgba(0,0,0,.3);
}

.browser-bar{
    height:40px;
    background:#e5e7eb;
    display:flex;
    align-items:center;
    padding-left:15px;
    gap:8px;
}

.browser-bar span{
    width:12px;
    height:12px;
    border-radius:50%;
    background:#94a3b8;
}

/* BENEFITS */

.benefits{
    background:white;
    color:#111827;
}

.benefit-card{
    background:white;
    padding:30px;
    border-radius:20px;
    height:100%;
    box-shadow:0 10px 30px rgba(0,0,0,.08);
    transition:.3s;
}

.benefit-card:hover{
    transform:translateY(-8px);
}

.icon{
    font-size:2rem;
    margin-bottom:15px;
}

/* DEMO */

.demo-section{
    background:#111827;
}

.phone-preview{
    max-height:650px;
    border-radius:20px;
    box-shadow:0 20px 50px rgba(0,0,0,.4);
}

.timeline-item{
    padding:20px;
    margin-bottom:15px;
    background:#1e293b;
    border-radius:12px;
}

/* AUTHOR */

.author-section{
    background:white;
    color:#111827;
}

.stat-box h3{
    font-size:3rem;
    font-weight:800;
    color:#6366f1;
}

/* LEAD SECTION */

.lead-section{
    padding:100px 0;
}

.lead-card{
    background:#1e293b;
    padding:50px;
    border-radius:24px;
    box-shadow:0 20px 40px rgba(0,0,0,.25);
}

/* VIDEO LESSONS */

.lessons-list{
    max-width:100%;
    margin:0 auto;
}

.lesson-item{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 25px;
    margin-bottom:15px;
    border-radius:14px;
    background:#0f172a;
    border:1px solid rgba(255,255,255,.08);
    cursor:pointer;
    transition:all .25s ease;
}

.lesson-item:hover{
    background:#334155;
    transform:translateX(8px);
    border-color:#6366f1;
}

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

.play-icon{
    width:40px;
    height:40px;
    border-radius:50%;
    background:#6366f1;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:14px;
    color:white;
    flex-shrink:0;
}

.lesson-title{
    font-size:18px;
    font-weight:600;
    color:white;
}

.lesson-right{
    color:#cbd5e1;
    font-size:14px;
    font-weight:500;
}

/* MODAL */

.modal-content{
    background:#0f172a;
    border:none;
    border-radius:20px;
}

.modal-body{
    padding:0;
}

#videoPlayer{
    width:100%;
    border-radius:20px;
}

/* FORM */

.form-control{
    padding:15px;
}

/* MOBILE */

@media(max-width:768px){

    .hero-title{
        font-size:2.2rem;
    }

    .phone-preview{
        margin-top:40px;
    }

    .lead-card{
        padding:25px;
    }

    .lesson-item{
        flex-direction:column;
        align-items:flex-start;
        gap:12px;
    }

    .lesson-right{
        margin-left:55px;
    }
}

.course-banner{
    background:#0f172a;
    border-radius:20px;
    padding:25px;
    height:100%;
    border:1px solid rgba(255,255,255,.08);
    position:sticky;
    top:30px;
}

.course-banner img{
    width:100%;
    border-radius:16px;
}

.course-banner h3{
    margin-top:10px;
    font-size:1.6rem;
    font-weight:700;
}

.course-banner p{
    color:#cbd5e1;
}

.course-features{
    list-style:none;
    padding:0;
    margin:20px 0;
}

.course-features li{
    margin-bottom:10px;
}