.course-tab-nav {
    display: flex;
    align-items: center;
    gap: 14px;
    height: 72px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    margin-bottom: 18px;
}

.course-tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 14.5px;
    font-weight: 620;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    transition: color .22s ease, background-color .22s ease, transform .22s ease;
}

.course-tab::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    background: conic-gradient(from 0deg, rgba(22, 59, 140, 0.85), rgba(86, 132, 238, 0.8), rgba(22, 59, 140, 0.85));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    padding: 1.2px;
    pointer-events: none;
}

.course-tab:hover,
.course-tab:focus-visible {
    color: var(--navy);
    background: rgba(13, 36, 86, 0.06);
    transform: translateY(-1px);
}

.course-tab:hover::before,
.course-tab:focus-visible::before {
    opacity: 1;
    animation: faculty-tab-ring 1.05s linear infinite;
}

.course-tab.active {
    color: #fff;
    background: var(--navy);
}

@keyframes faculty-tab-ring {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Premium refinement pass */
.course-tab-content {
    position: relative;
}

.course-tab-nav {
    position: relative;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.54));
    border: 1px solid rgba(13, 36, 86, 0.09);
    border-radius: 16px;
    height: auto;
    min-height: 72px;
    padding: 8px 14px;
    box-shadow: 0 20px 32px -34px rgba(12, 18, 34, 0.42);
}

.course-tab {
    min-height: 44px;
    letter-spacing: -0.01em;
}

.course-tab.active {
    color: #ffffff;
    background: linear-gradient(135deg, #173f95 0%, #2d61cb 55%, #1f4baa 100%);
    box-shadow: 0 14px 24px -18px rgba(23, 63, 149, 0.72), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.tab-content.active {
    animation: faculty-panel-enter 460ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

@keyframes faculty-panel-enter {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.995);
        filter: blur(1.2px);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@media (max-width: 768px) {
    .course-tab-nav {
        gap: 10px;
        min-height: 60px;
        overflow-x: auto;
        padding: 8px;
    }

    .course-tab {
        padding: 8px 14px;
        font-size: 13.5px;
    }
}

/* FABA extended tab row */
.course-tab-nav--faba,
.course-tab-nav--fessh {
    align-items: stretch;
    justify-content: flex-start;
    gap: 8px;
    padding: 10px;
    overflow: visible;
}

.course-tab-nav--faba .course-tab,
.course-tab-nav--fessh .course-tab {
    flex: 0 1 auto;
    min-height: 48px;
    padding: 11px 18px;
    border: 1px solid rgba(13, 36, 86, 0.1);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.76);
    color: #12306a;
    box-shadow: 0 10px 24px -22px rgba(13, 36, 86, 0.45);
}

.course-tab-nav--faba .course-tab.active,
.course-tab-nav--fessh .course-tab.active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, #0b2b67 0%, #174aa6 100%);
}

@media (max-width: 768px) {
    .course-tab-nav--faba,
    .course-tab-nav--fessh {
        overflow-x: auto;
        flex-wrap: nowrap;
    }

    .course-tab-nav--faba .course-tab,
    .course-tab-nav--fessh .course-tab {
        flex: 0 0 auto;
    }
}
/* Scrollable long faculty tabs */
.course-tab-nav--scroll {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    scrollbar-width: thin;
    scrollbar-color: rgba(13, 36, 86, 0.32) transparent;
}

.course-tab-nav--scroll::-webkit-scrollbar {
    height: 6px;
}

.course-tab-nav--scroll::-webkit-scrollbar-track {
    background: transparent;
}

.course-tab-nav--scroll::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: rgba(13, 36, 86, 0.28);
}

.course-tab-nav--scroll .course-tab {
    flex: 0 0 auto;
    scroll-snap-align: start;
}