.container {
    padding-block: 10px;
}


/* =========================
COURSE HERO
========================= */

.course-hero{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius-sm);
    padding:40px;
    margin-bottom:12px;
    box-shadow:var(--shadow);
}

.course-category{
    display:inline-block;
    color:var(--primary);
    font-size:14px;
    font-weight:600;
    margin-bottom:14px;
}

.course-title{
    font-size:42px;
    font-weight:800;
    line-height:1.2;
    margin-bottom:14px;
}

.course-description{
    max-width:750px;
    color:var(--text-light);
    margin-bottom:24px;
}

.course-meta{
    display:flex;
    flex-wrap:wrap;
    gap:24px;
    margin-bottom:28px;
    color:var(--text-light);
    font-size:14px;
}

.course-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:14px 24px;
    border-radius:12px;
    background:var(--primary);
    color:white;
    text-decoration:none;
    font-weight:600;
}

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

.section{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius-sm);
    padding:32px;
    margin-bottom:12px;
    box-shadow:var(--shadow-md);
}

.section-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:24px;
}

.section-title{
    font-size:24px;
    font-weight:700;
}

.section-count{
    font-size:14px;
    color:var(--text-light);
}

/* =========================
INSTRUCTOR
========================= */

.instructor{
    display:flex;
    align-items:center;
    gap:18px;
}

.avatar{
    width:64px;
    height:64px;
    border-radius:50%;
    background:linear-gradient(135deg,#2563eb,#60a5fa);
    display:flex;
    align-items:center;
    justify-content:center;
    color:white;
    font-weight:700;
    font-size:20px;
    flex-shrink:0;
}

.instructor-name{
    font-size:18px;
    font-weight:700;
    margin-bottom:4px;
}

.instructor-role{
    font-size:14px;
    color:var(--text-light);
}

/* =========================
MATERIAL LIST
========================= */

.material-list{
    display:flex;
    flex-direction:column;
}

.material{
    display:flex;
    align-items:center;
    gap:20px;
    padding:18px 0;
    text-decoration:none;
    color:inherit;
    border-bottom:1px solid #f1f5f9;
    transition:.2s ease;
}

.material:last-child{
    border-bottom:none;
}

.material:hover{
    transform:translateX(6px);
}

.material:hover .material-title{
    color:var(--primary);
}

.material:hover .material-arrow{
    color:var(--primary);
}

.material-number{
    width:40px;
    color:#94a3b8;
    font-weight:700;
    flex-shrink:0;
}

.material-content{
    flex:1;
}

.material-title{
    font-weight:600;
    margin-bottom:4px;
    transition:.2s;
}

.material-description{
    font-size:14px;
    color:var(--text-light);
}

.material-type{
    padding:6px 12px;
    border-radius:999px;
    background:#f8fafc;
    border:1px solid var(--border);
    color:#475569;
    font-size:13px;
    font-weight:600;
    white-space:nowrap;
}

.material-arrow{
    width:24px;
    text-align:center;
    color:#cbd5e1;
    font-size:18px;
    transition:.2s;
}

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

@media(max-width:768px){

    .course-title{
        font-size:32px;
    }

    .course-hero,
    .section{
        padding:24px;
    }

    .material{
        gap:12px;
    }

    .material-type{
        font-size:12px;
        padding:5px 10px;
    }

}