:root{
    --Red: hsl(1, 90%, 64%);
    --Blue: hsl(219, 85%, 26%);
    --White: hsl(0, 0%, 100%);
    --Very-light-grayish-blue: hsl(210, 60%, 98%);
    --Light-grayish-blue1: hsl(211, 68%, 94%);
    --Light-grayish-blue2: hsl(205, 33%, 90%);
    --Grayish-blue: hsl(219, 14%, 63%);
    --Dark-grayish-blue: hsl(219, 12%, 42%);
    --Very-dark-blue: hsl(224, 21%, 14%);
}

*{
    margin: 0;
    box-sizing: border-box;
    width: 100%;
}

html{
    font-family: "Plus Jakarta Sans", sans-serif;
    color: var(--Dark-grayish-blue);
    font-size: 15px;
}

body{
    padding: 1rem;
}

header{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

header p {
    width: fit-content;
}

h1{
    font-size: 1.35rem;
    font-weight: 800;
    width: fit-content;
    color: var(--Very-dark-blue);
}

b{
    color: var(--Very-dark-blue);
}

.post{
    font-weight: 600;
}

.group{
    color: var(--Blue);
    font-weight: 700;
}

.date{
    color: var(--Grayish-blue);
}

.title_container{
    display: flex;
}

.new_notifs_counter{
    font-weight: 600;
    width: fit-content;
    background-color: var(--Blue);
    color: var(--White);
    padding: 0.1rem 0.65rem 0.2rem;
    border-radius: 0.4rem;
    margin-left: 0.5rem;
}

header p{
    text-align: right;
    text-wrap: nowrap;
}

aside{
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    margin: 1rem 0;
}

.notification{
    display: flex;
    padding: 1rem;
    border-radius: 0.5rem;
}

.notification img{
    width: 45px;
    height: 45px;
    margin-right: 1rem;
}

.message{
    padding: 0.5rem;
    margin-top: 0.5rem;
    border: 1px solid var(--Light-grayish-blue2);
    border-radius: 0.2rem;
    font-weight: 500;
}

/*design des nouvelles notifs*/

.new_notif{
    background-color: var(--Very-light-grayish-blue);
}

.new_notif p:nth-child(1):after{
    content: "";
    height: 8px;
    width: 8px;
    background-color: var(--Red);
    border-radius: 9999px;
    display: inline-flex;
    vertical-align: middle;
    margin-left: 0.5rem;
}

body{
    display: flex;
    flex-direction: column;
    
    justify-content: center;
}

header, aside{
    max-width: 650px;
    margin: auto;
}

.notification:hover, .mark_as_read{
    cursor: pointer;
}

@media screen and (min-width:1000px) {
    html{
        font-size: 16px;
    }
}

@media screen and (min-width:1280px) {
    body{
        height: 100vh;
    }
}