.hero{

    padding:90px 0;
}

.hero-content{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:50px;

    align-items:center;
}

.hero-text h1{

    font-size:56px;

    line-height:1.2;

    margin-bottom:20px;
}

.hero-text p{

    color:var(--text-light);

    line-height:1.8;

    margin-bottom:30px;

    font-size:17px;
}

.hero-buttons{

    display:flex;

    gap:16px;
}

.hero-image{

    background:linear-gradient(
        135deg,
        #2563eb,
        #3b82f6
    );

    border-radius:var(--radius-md);

    min-height:420px;

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

    color:white;

    font-size:32px;

    font-weight:700;

    box-shadow:var(--shadow-md);
}

.section{

    padding:80px 0;
}

.section-header{

    text-align:center;

    margin-bottom:50px;
}

.section-header h2{

    font-size:38px;

    margin-bottom:12px;
}

.section-header p{
    color:var(--text-light);
}

.course-grid{

    display:grid;

    grid-template-columns:
        repeat(auto-fit,minmax(280px,1fr));

    gap:24px;
}

.course-card{   
    width:100%;
    max-width:360px;

    background:var(--surface);

    border-radius:var(--radius-md);

    overflow:hidden;

    box-shadow:var(--shadow-sm);

    transition:var(--transition);
}

.course-card:hover{
    transform:translateY(-5px);
}

.course-thumbnail{
    position:relative;

    height:180px;

    background:linear-gradient(
        135deg,
        #2563eb,
        #60a5fa
    );
}

.course-content{
    padding:22px;
}

.course-category{
    position:absolute;

    top:18px;
    left:18px;

    font-size:12px;

    font-weight:600;

    color:white;

    background:rgba(255,255,255,.18);

    backdrop-filter:blur(10px);

    padding:6px 12px;

    border-radius:999px;
}

.course-level{

    display:inline-flex;
    align-items:center;

    gap:6px;

    margin-bottom:14px;

    font-size:12px;

    font-weight:500;

    color:var(--text-light);

    letter-spacing:.2px;
}

.course-level::before{

    content:'';

    width:7px;
    height:7px;

    border-radius:50%;

    background:var(--text-light);

    opacity:.5;
}

.course-title{

    font-size:22px;

    line-height:1.4;

    margin-bottom:10px;
}


.course-description{

    font-size:14px;

    line-height:1.7;

    color:var(--text-light);

    margin-bottom:18px;
}

.course-stats{

    display:flex;
    align-items:center;

    gap:14px;

    margin-bottom:22px;

    flex-wrap:wrap;
}

.stats-item{

    display:flex;
    align-items:center;

    gap:6px;

    font-size:13px;

    color:var(--text-light);

    font-weight:500;
}


.course-footer{

    display:flex;
    align-items:center;
    justify-content:space-between;

    gap:14px;
}

.teacher{

    display:flex;
    align-items:center;

    gap:10px;
}

.teacher-avatar{

    width:44px;
    height:44px;

    border-radius:50%;

    object-fit:cover;
}

.teacher-name{

    font-size:14px;

    font-weight:600;

    margin-bottom:2px;
}

.teacher-role{

    font-size:12px;

    color:var(--text-light);
}

.course-btn{

    padding:11px 16px;

    border-radius:var(--radius-sm);

    border:1px solid var(--border);

    background:white;

    font-size:14px;

    font-weight:600;

    transition:var(--transition);
}

.course-btn:hover{

    border-color:var(--primary);

    color:var(--primary);
}

.feature-grid{

    display:grid;

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

    gap:24px;
}

.feature-card {
    background:var(--surface);

    border-radius:var(--radius-sm);

    border:1px solid #eef2f7;

    box-shadow:var(--shadow-sm);

    transition:var(--transition);
}

.feature-content{
    padding: 22px;
}

.feature-title{

    font-size:20px;

    margin-bottom:10px;

    color:var(--text);
    
    font-weight: 500;
}

.stats-number{

    font-size:42px;

    margin-left: 10px;

    margin-bottom:10px;

    font-weight:700;

    color:var(--text);
}

.stats-label{

    color:var(--text-light);

    font-size:15px;
}

.cta-card{

    padding:60px 40px;

    text-align:center;

    background:linear-gradient(
        135deg,
        #2563eb,
        #3b82f6
    );

    color:white;
}

.cta-title{

    font-size:42px;

    margin-bottom:16px;
}

.cta-description{

    color:rgba(255,255,255,.8);

    max-width:700px;

    margin:auto;

    margin-bottom:28px;

    line-height:1.8;
}

.cta-btn{

    background:white;

    color:#2563eb;

    width:auto;

    padding:15px 28px;

    transition:var(--transition);
}

.cta-btn:hover{

    background:#eff6ff;

    color:#1d4ed8;

}

.cta-btn:active{

    transform:scale(.98);
}


.footer{

    background:#0f172a;

    color:white;

    padding:70px 0 30px;
}

.footer-content{

    display:grid;

    grid-template-columns:
        repeat(auto-fit,minmax(220px,1fr));

    gap:40px;

    margin-bottom:50px;
}

.footer-title{

    margin-bottom:18px;

    font-size:18px;
}

.footer-links{

    display:flex;
    flex-direction:column;

    gap:12px;
}

.footer-link{

    color:#cbd5e1;

    transition:var(--transition);
}

.footer-link:hover{
    color:white;
}

.footer-bottom{

    border-top:1px solid rgba(255,255,255,.1);

    padding-top:24px;

    text-align:center;

    color:#94a3b8;
}


@media(max-width:900px){

    .hero-content{
        grid-template-columns:1fr;
    }

    .hero-text{
        text-align:center;
    }

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

}

@media(max-width:700px){

    .course-card{

        max-width:100%;
    }

    .course-title{

        font-size:20px;
    }

    .course-footer{

        flex-direction:column;

        align-items:flex-start;
    }

    .course-btn{

        width:100%;

        text-align:center;
    }

    .cta-card{

        padding:45px 24px;
    }

    .cta-title{

        font-size:32px;
    }

    .nav-menu{
        display:none;
    }

    .hero-text h1{
        font-size:42px;
    }

    .section-header h2{
        font-size:30px;
    }

}