.subject-nav { display: flex; align-items: center; gap: 6px; }
.subject-nav-link { display: flex; align-items: center; gap: 8px; padding: 7px 12px; border: 2px solid transparent; border-radius: var(--radius); color: var(--main); font-size: 16px; font-weight: var(--main_bolder_weight); white-space: nowrap; }
.subject-nav-link:hover { background: var(--secondary_background); color: var(--main); }
.subject-nav-link[aria-current="page"] { background: var(--lightblue); border-color: var(--blue_border); color: var(--main); }
.subject-nav .subject-nav-icon { flex: 0 0 auto; width: 36px; height: 36px; margin: 0; border-radius: 10px; object-fit: contain; }
.subject-nav .subject-nav-label { display: block; }
.subject-nav-link:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.learn-question-bank { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin: 24px 0; padding: 20px 24px; border: var(--border); border-bottom-width: 4px; border-radius: var(--radius); background: var(--white); }
.learn-question-bank strong, .learn-question-bank small { display: block; }
.learn-question-bank small { margin-top: 4px; color: var(--secondary); font-size: 14px; }
@media (max-width: 970px) {
    .subject-nav { gap: 2px; }
    .subject-nav-link { font-size: 15px; padding: 7px 8px; gap: 6px; }
    .subject-nav .subject-nav-icon { width: 30px; height: 30px; border-radius: 9px; }
    .navbar .nav_search { display: none; }
}
@media (max-width: 600px) {
    .subject-nav-link { flex-direction: column; justify-content: center; gap: 3px; padding: 5px 8px; font-size: 12px; line-height: 1.2; border-radius: 12px; }
    .subject-nav .subject-nav-icon { width: 26px; height: 26px; border-radius: 8px; }
}
@media (max-width: 535px) {
    .navbar_content { padding-right: 12px; padding-left: 12px; }
    .navbar .stats { display: none; }
    .navbar .nav_btns { margin-right: 0; }
    .navbar #profile_btn { margin-left: 10px; }
    .navbar #profile_toast .stat_tri { right: -14px; }
}
@media (max-width: 370px) {
    .subject-nav-link { padding: 5px 6px; }
    .navbar #profile_btn { margin-left: 6px; }
    .navbar #profile_toast .stat_tri { right: -18px; }
    .navbar_content { padding-right: 8px; padding-left: 8px; }
}