body.student-dashboard-bg {
    background: #f4f7f8 !important;
    min-height: 100vh;
}
.student-navbar {
    background: linear-gradient(90deg, #e9f9f2 0%, #e0f6e7 100%);
    border-bottom: 2px solid #4eb44e10;
    min-height: 58px;
}
.project-title {
    color: #249257;
    letter-spacing: 0.04em;
    font-size: 1.18rem;
}
.student-sidebar {
    width: 240px;
    min-height: 90vh;
    background: #fff;
    border-right: 1px solid #eee;
    position: relative;
}
.student-sidebar .nav-link {
    color: #222 !important;
    font-weight: 500;
    border-radius: 0 18px 18px 0;
    margin-bottom: 2px;
    padding: 13px 24px 13px 18px;
    transition: background 0.15s, color 0.15s;
}
.student-sidebar .nav-link.active,
.student-sidebar .nav-link:hover {
    background: linear-gradient(90deg, #c3f4d9 10%, #e6f9eb 100%);
    color: #1e7145 !important;
}
.student-main {
    flex: 1 1 0%;
    min-height: 90vh;
    background: #fff;
    border-radius: 18px;
    margin-left: 18px;
    margin-top: 0;
    box-shadow: 0 1px 5px 0 #aaeac020;
    padding: 32px 22px 22px 22px;
}
@media (max-width: 991px) {
    .student-sidebar { width: 80px; min-width:80px; padding-left:0; }
    .student-sidebar .nav-link { padding: 10px 4px 10px 6px; font-size:0.98em;}
    .student-main { margin-left: 0; padding:16px 5px; }
}
.card { border-radius: 15px !important; }
.card-header { border-radius: 15px 15px 0 0 !important; }
.progress { height: 18px; border-radius: 10px; }
.progress-bar { font-weight: 600; }
.ann-box, .deadlines-box, .msg-box, .ai-box, .status-box {
    background: #f9fcfb;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px #66bb6a10;
    margin-bottom: 22px;
}
.ann-box h4, .deadlines-box h4, .msg-box h4, .ai-box h4, .status-box h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #3e6d53;
}
.status-box {
    border-left: 6px solid #3498db;
}
.ann-box {
    border-left: 6px solid #4eb44e;
}
.deadlines-box {
    border-left: 6px solid #fbc02d;
}
.msg-box {
    border-left: 6px solid #7952b3;
}
.ai-box {
    border-left: 6px solid #00796b;
}
.btn-success {
    background: linear-gradient(90deg, #43e97b 0%, #38f9d7 100%);
    border: none;
}
.btn-success:hover { filter: brightness(0.95);}
::-webkit-scrollbar { width: 10px; background: #f2f2f2; }
::-webkit-scrollbar-thumb { background: #a7e7bd; border-radius: 7px; }