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

body {
    min-height: 100vh;
    background: linear-gradient(135deg,#006057,#006057,#006057);
    display: flex;
    justify-content: center;
    align-items: center;
    direction: rtl;
    color: white;
    padding: 20px;
}

.container {
    text-align: center;
    width: 100%;
    max-width: 900px;
}

.title {
    font-size: 38px;
    font-weight: 700;
    margin-bottom: 10px;
}

.subtitle {
    opacity: .8;
    margin-bottom: 40px;
    font-size: 16px;
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

.btn {
    width: 260px;
    height: 120px;
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: .35s;
    text-decoration: none;
    color: white;
    box-shadow: 0 10px 30px rgba(0,0,0,.4);
}

    .btn div {
        font-size: 32px;
        margin-bottom: 8px;
    }

    .btn:hover {
        transform: translateY(-8px) scale(1.03);
        box-shadow: 0 20px 40px rgba(0,0,0,.5);
    }

.student {
    background: linear-gradient(135deg,#4facfe,#00f2fe);
}

.staff {
    background: linear-gradient(135deg,#43e97b,#38f9d7);
}

.school {
    background: linear-gradient(135deg,#ff416c,#ff4b2b);
}

.admin {
    background: linear-gradient(135deg,#Ff6700,#Ff6700);
}

.footer {
    margin-top: 50px;
    font-size: 14px;
    opacity: .7;
}

/* موبایل */
@media (max-width:768px) {

    .title {
        font-size: 28px;
    }

    .subtitle {
        font-size: 14px;
    }

    .buttons {
        flex-direction: column;
        align-items: center;
        gap: 18px;
    }

    .btn {
        width: 90%;
        max-width: 320px;
        height: 95px;
        font-size: 18px;
    }

        .btn div {
            font-size: 26px;
        }
}