*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body{
    background:
    linear-gradient(
        135deg,
        #020617,
        #001845,
        #020617
    );

    min-height: 100vh;
    color: white;
    padding: 20px;
}

/* 🎓 HERO */

.semester-hero{
    margin-top: 40px;
    margin-bottom: 40px;
}

.hero-content h1{
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 12px;
}

.hero-content p{
    color: #94a3b8;
    font-size: 18px;
}

/* 📚 SUBJECTS */

.section-title{
    margin-bottom: 25px;
}

.section-title h2{
    font-size: 34px;
    font-weight: 700;
}

/* 🔥 GRID */

.subjects-grid{
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 25px;
}

/* 📘 CARD */

.subject-card{
    background: rgba(255,255,255,0.05);

    border: 1px solid rgba(255,255,255,0.08);

    border-radius: 24px;

    padding: 30px;

    transition: 0.3s ease;

    box-shadow:
    0 8px 30px rgba(0,0,0,0.25);
}

.subject-card:hover{
    transform: translateY(-6px);

    border-color: #2563eb;
}

/* 📖 SUBJECT TITLE */

.subject-card h3{
    font-size: 28px;
    margin-bottom: 18px;
}

/* 📋 LIST */

.subject-card ul{
    list-style: none;
}

.subject-card ul li{
    margin-bottom: 12px;
    color: #cbd5e1;
    font-size: 17px;
}

/* 🔵 BUTTON */

.explore-btn{
    display: inline-block;

    margin-top: 20px;

    background: linear-gradient(
        135deg,
        #2563eb,
        #1d4ed8
    );

    color: white;

    text-decoration: none;

    padding: 12px 22px;

    border-radius: 14px;

    font-weight: 600;

    transition: 0.3s ease;
}

.explore-btn:hover{
    transform: scale(1.05);
}

/* 📱 MOBILE */

@media(max-width:768px){

    .hero-content h1{
        font-size: 34px;
    }

    .hero-content p{
        font-size: 15px;
    }

    .subjects-grid{
        grid-template-columns: 1fr;
    }

    .subject-card{
        padding: 24px;
    }

    .subject-card h3{
        font-size: 22px;
    }

}