*{
    margin: 0;
    padding: 0;
    box-sizing: border-box; 
}
body{
    font-family: Arial, Helvetica, sans-serif;
    background: radial-gradient(1200px 600px at 10% 10%, #fffbf0 0%, #fff0f6 10%, #f0f5ff 40%, #f7f7ff 100%);
}
#content{
    max-width: 100%;
    height: 100vh;
    margin: 20px auto;
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}       
#con-udiv{
    display: flex;
    gap: 20px;
    height: 100%;
}
/* Sidebar for users */
#users-sidebar{
    width: 30%; /* users take 30% of the container */
    background: linear-gradient(135deg, #351433 0%, #322554 50%, #4f2743 100%);
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0 12px 40px rgba(255,90,95,0.12), inset 0 1px 0 rgba(255,255,255,0.6);
    overflow-y: auto;
    height: calc(100vh - 80px);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(6px);
}

#users-sidebar h2{
    font-size: 20px;
    margin-bottom: 12px;
    color: #fff;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
    letter-spacing: 0.6px;
}

#users-list{
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.user-card{
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 12px;
    width: 100%; /* fill sidebar */
    background: linear-gradient(90deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
    border-radius: 10px;
    border-left: 6px solid rgba(255,255,255,0.06);
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}

.user-card:hover{
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.14);
    background: linear-gradient(90deg, rgba(255,255,255,0.09), rgba(255,255,255,0.03));
}

.user-avatar{
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg,#e8e8e7,#bc76e8);
    flex-shrink: 0;
    box-shadow: 0 6px 18px rgba(255,133,133,0.18);
    border: 2px solid rgba(255,255,255,0.35);
}

.user-meta{
    font-size: 14px;
    color: rgba(255,255,255,0.95);
}

.user-name{
    font-weight: 700;
    color: #fff;
}

.user-email{
    font-size: 12px;
    color: rgba(255,255,255,0.8);
}

/* active user */
.user-card.active{
    background: linear-gradient(90deg, rgba(255,255,255,0.12), rgba(255,255,255,0.04));
    box-shadow: 0 18px 48px rgba(124,77,255,0.16), 0 4px 14px rgba(0,0,0,0.12);
    transform: translateY(-4px);
    border-left-color: rgba(124,77,255,0.4);
}

/* Main posts area */
#posts-div{
    width: 70%; /* posts take 70% */
    flex: 0 0 70%;
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    height: calc(100vh - 80px);
    padding: 18px;
    background: linear-gradient(135deg,#25144f 0%, #672877 100%);
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.16);
    box-shadow: 0 18px 60px rgba(124,77,255,0.08), inset 0 1px 0 rgba(255,255,255,0.25);
}

#posts-div h2{
    font-size: 20px;
    color: #fff;
    margin-bottom: 8px;
    text-shadow: 0 6px 18px rgba(0,0,0,0.25);
}

#posts-list{
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.post-card{
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
    padding: 16px;
    border-radius: 10px;
    box-shadow: 0 8px 28px rgba(0,0,0,0.18);
    border-left: 6px solid rgba(124,77,255,0.12);
    transition: transform .12s ease, box-shadow .12s ease;
}

.post-card:hover{
    transform: translateY(-6px);
    box-shadow: 0 22px 56px rgba(0,0,0,0.22);
}

.post-title{
    font-weight: 800;
    margin-bottom: 8px;
    font-size: 18px;
    color: #fff;
}

.post-body{
    font-size: 14px;
    color: rgba(255,255,255,0.92);
    line-height: 1.45;
}

/* Scrollbar styling for WebKit */
#users-sidebar::-webkit-scrollbar, #posts-div::-webkit-scrollbar{
    width: 10px;
}
#users-sidebar::-webkit-scrollbar-track, #posts-div::-webkit-scrollbar-track{
    background: linear-gradient(180deg,#ffdede, #fff0f6);
    border-radius: 8px;
}
#users-sidebar::-webkit-scrollbar-thumb, #posts-div::-webkit-scrollbar-thumb{
    background: linear-gradient(180deg,#dfc8df,#ffb3b3);
    border-radius: 8px;
    box-shadow: inset 0 0 0 2px rgba(255,255,255,0.12);
}

/* Responsive: stack on small screens */
@media (max-width: 700px){
    #con-udiv{
        flex-direction: column;
    }
    #users-sidebar{
        width: 100%;
        height: auto;
    }
    #posts-div{
        height: auto;
    }
}