.sidebar {
    position: sticky;
    top: 20px;
}

.course-content h1,
.course-content h2,
.course-content h3,
.course-content h4 {
    color: #38bdf8;
    margin-top: 24px;
    margin-bottom: 12px;
}

.course-content p,
.course-content li {
    color: #e2e8f0;
    line-height: 1.8;
}

.course-content ul,
.course-content ol {
    padding-left: 22px;
}

.course-content pre {
    background: #0f172a;
    color: #22c55e;
    padding: 14px;
    border-radius: 10px;
    overflow-x: auto;
}

.course-content code {
    color: #22c55e;
}
.qa-card.active .qa-toggle {
    transform: rotate(90deg);
}

/* ================= COURSES PAGE ================= */

.courses-page {
    background:
            radial-gradient(circle at top right, rgba(56,189,248,0.16), transparent 34%),
            var(--bg);
}

.courses-hero {
    padding: 26px 0 30px;
}

.courses-hero-card {
    max-width: 980px;
    margin: 0 auto;
    padding: 34px 30px;
    border-radius: 34px;
    text-align: center;
    background:
            radial-gradient(circle at top right, rgba(56,189,248,0.22), transparent 36%),
            linear-gradient(135deg, rgba(15,23,42,0.94), rgba(51,65,85,0.92));
    border: 1px solid rgba(125,211,252,0.22);
    box-shadow: 0 24px 65px rgba(15,23,42,0.25);
}

.hero-badge {
    display: inline-block;
    margin-bottom: 12px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(56,189,248,0.14);
    color: #7dd3fc !important;
    font-weight: 900;
    font-size: 0.9rem;
}

.courses-hero-card h1 {
    color: #ffffff;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.12;
    font-weight: 900;
    margin-bottom: 12px;
}

.courses-hero-card p {
    max-width: 720px;
    margin: 0 auto 22px;
    color: #cbd5e1;
    line-height: 1.7;
}

.course-search-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 210px 140px;
    gap: 12px;
    margin: 0 auto 24px;
}

.course-search-form .form-control,
.course-search-form .form-select,
.course-search-form .btn {
    height: 56px;
    border-radius: 18px;
    font-weight: 700;
}

.course-search-form .btn {
    font-weight: 900;
}

.course-chip-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.course-chip {
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(125,211,252,0.22);
    color: #7dd3fc !important;
    font-weight: 900;
    text-decoration: none;
    transition: 0.25s;
}

.course-chip:hover {
    background: #38bdf8;
    color: #06111f !important;
    transform: translateY(-3px);
}

.courses-list-section {
    padding: 34px 0 60px;
}

.section-heading {
    text-align: center;
    margin-bottom: 30px;
}

.section-heading h2 {
    font-weight: 900;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.section-heading p {
    color: var(--text);
    opacity: 0.68;
    max-width: 680px;
    margin: 8px auto 0;
    line-height: 1.7;
}

.course-card-link {
    text-decoration: none;
    display: block;
    height: 100%;
}

.course-card {
    height: 100%;
    min-height: 235px;
    padding: 22px;
    border-radius: 26px;
    background:
            radial-gradient(circle at top right, rgba(56,189,248,0.16), transparent 38%),
            var(--card);
    border: 1px solid var(--navbar-border);
    box-shadow: 0 14px 36px rgba(15,23,42,0.10);
    transition: 0.25s;
}

.course-card:active {
    transform: scale(0.98);
}

.course-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.course-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.course-card h3 {
    font-size: 1.1rem;
    font-weight: 900;
    line-height: 1.3;
    color: var(--text);
}

.course-card p {
    color: var(--text);
    opacity: 0.72;
    line-height: 1.6;
    font-size: 0.95rem;
}

.course-card span {
    display: inline-block;
    margin-top: auto;
    color: var(--primary);
    font-weight: 900;
}

/* LIGHT MODE */

body.light .courses-page {
    background:
            radial-gradient(circle at top right, rgba(2,132,199,0.14), transparent 36%),
            #f8fafc;
}

body.light .courses-hero-card {
    background:
            radial-gradient(circle at top right, rgba(2,132,199,0.12), transparent 38%),
            #ffffff;
    border-color: rgba(2,132,199,0.16);
    box-shadow: 0 18px 45px rgba(15,23,42,0.10);
}

body.light .courses-hero-card h1 {
    color: #0f172a;
}

body.light .courses-hero-card p {
    color: #475569;
}

body.light .course-chip {
    background: #ffffff;
    color: #075985 !important;
    border-color: rgba(2,132,199,0.18);
    box-shadow: 0 8px 18px rgba(15,23,42,0.08);
}

body.light .course-card {
    background: #ffffff;
    border-color: rgba(2,132,199,0.14);
}

/* MOBILE */

@media (max-width: 768px) {
    .courses-hero {
        padding: 18px 10px 24px;
    }

    .courses-hero-card {
        padding: 28px 18px;
        border-radius: 30px;
    }

    .courses-hero-card h1 {
        font-size: 2rem;
    }

    .courses-hero-card p {
        font-size: 0.95rem;
    }

    .course-search-form {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .course-search-form .form-control,
    .course-search-form .form-select,
    .course-search-form .btn {
        width: 100%;
        height: 58px;
        border-radius: 18px;
    }

    .course-chip-grid {
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 8px;
        -webkit-overflow-scrolling: touch;
    }

    .course-chip-grid::-webkit-scrollbar {
        display: none;
    }

    .course-chip {
        flex: 0 0 auto;
        padding: 10px 16px;
        font-size: 0.92rem;
    }

    .courses-list-section {
        padding: 26px 8px 50px;
    }

    .section-heading {
        margin-bottom: 22px;
    }

    .section-heading h2 {
        font-size: 1.9rem;
    }

    .section-heading p {
        font-size: 0.95rem;
    }

    .course-card {
        min-height: 225px;
        padding: 18px 14px;
        border-radius: 24px;
    }

    .course-card h3 {
        font-size: 1rem;
    }

    .course-card p {
        font-size: 0.88rem;
        line-height: 1.55;
        display: -webkit-box;
        -webkit-line-clamp: 4;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}

@media (max-width: 390px) {
    .course-card {
        min-height: 210px;
        padding: 16px 12px;
    }

    .course-card h3 {
        font-size: 0.92rem;
    }

    .course-card p {
        font-size: 0.82rem;
        -webkit-line-clamp: 3;
    }
}

/* ================= FINAL COURSE UI POLISH ================= */

.app-navbar {
    min-height: 72px !important;
    padding: 8px 0 !important;
}

.navbar-logo {
    height: 42px !important;
}

.courses-hero {
    padding: 22px 0 24px;
}

.courses-hero-card {
    box-shadow:
            0 20px 50px rgba(15,23,42,.10),
            inset 0 1px 0 rgba(255,255,255,.35);
}

.course-search-form .form-control,
.course-search-form .form-select {
    box-shadow: inset 0 2px 6px rgba(15,23,42,.05);
}

.course-chip:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(2,132,199,.15);
}

.courses-list-section {
    padding-top: 26px;
}

.course-card {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.course-card p {
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card span {
    font-size: .95rem;
    font-weight: 900;
}

.course-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 10px 0 12px;
}

.course-meta span {
    font-size: .74rem;
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(56,189,248,.10);
    color: #0284c7 !important;
    font-weight: 800;
}

/* MOBILE */
@media (max-width: 768px) {
    .app-navbar {
        min-height: 68px !important;
    }

    .navbar-logo {
        height: 38px !important;
    }

    .courses-hero-card {
        padding: 24px 16px;
        border-radius: 26px;
    }

    .courses-hero-card h1 {
        font-size: 1.85rem;
    }

    .courses-list-section {
        padding-top: 20px;
    }

    .course-card {
        min-height: 220px;
    }
}

/* ===============================
   COURSE ICON + ADSENSE READY UI
================================ */

.course-icon {
    width: 54px;
    height: 54px;
    border-radius: 18px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    font-size: 1.9rem;
    margin-bottom: 14px;

    background:
            radial-gradient(circle at top right, rgba(56,189,248,0.35), transparent 42%),
            linear-gradient(135deg, rgba(56,189,248,0.18), rgba(14,165,233,0.08));

    border: 1px solid rgba(56,189,248,0.22);
    box-shadow: 0 10px 24px rgba(15,23,42,0.10);
}

.course-card {
    position: relative;
}

.course-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at top right, rgba(56,189,248,0.12), transparent 42%);
    pointer-events: none;
}

.course-card h3,
.course-card p,
.course-card .course-meta,
.course-card span,
.course-card .course-icon {
    position: relative;
    z-index: 1;
}

.course-card h3 {
    min-height: 44px;
}

.course-card p {
    min-height: 88px;
}

.course-meta span {
    color: #075985 !important;
}

body:not(.light) .course-meta span {
    color: #7dd3fc !important;
    background: rgba(56,189,248,0.12);
}

body:not(.light) .course-icon {
    background:
            radial-gradient(circle at top right, rgba(56,189,248,0.30), transparent 42%),
            rgba(255,255,255,0.08);
}

/* Mobile polish */
@media (max-width: 768px) {
    .course-icon {
        width: 46px;
        height: 46px;
        border-radius: 15px;
        font-size: 1.55rem;
        margin-bottom: 10px;
    }

    .course-card h3 {
        min-height: 38px;
    }

    .course-card p {
        min-height: 78px;
    }

    .course-meta {
        gap: 6px;
    }

    .course-meta span {
        font-size: 0.68rem;
        padding: 4px 7px;
    }
}

.course-seo-intro {
    padding: 12px 0 18px;
}

.course-seo-card {
    max-width: 980px;
    margin: auto;
    padding: 24px 28px;
    border-radius: 26px;
    background: var(--card);
    border: 1px solid var(--navbar-border);
    box-shadow: 0 12px 30px rgba(15,23,42,0.08);
    text-align: center;
}

.course-seo-card h2 {
    font-weight: 900;
    font-size: clamp(1.4rem, 3vw, 2rem);
}

.course-seo-card p {
    max-width: 860px;
    margin: 10px auto 0;
    line-height: 1.75;
    opacity: 0.82;
}

body.light .course-seo-card {
    background: #ffffff;
}

/* ===============================
   FORCE COURSES SIDE-BY-SIDE MOBILE
================================ */

.courses-list-section .row {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px !important;
}

.courses-list-section .row > [class*="col-"] {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
}

@media (max-width: 991px) {
    .courses-list-section .row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px !important;
    }
}

@media (max-width: 390px) {
    .courses-list-section .row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px !important;
    }
}

/* ===============================
   COURSE LIST - HIGH TRAFFIC UI FIX
================================ */

.courses-list-section .row {
    display: grid !important;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px !important;
}

.courses-list-section .row > [class*="col-"] {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
}

.course-card {
    min-height: 290px;
}

.course-icon {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.9rem;
    margin-bottom: 14px;
    background: linear-gradient(135deg, rgba(56,189,248,.22), rgba(14,165,233,.10));
    border: 1px solid rgba(56,189,248,.24);
}

.course-card h3 {
    min-height: 46px;
}

.course-card p {
    min-height: 92px;
}

@media (max-width: 991px) {
    .courses-list-section .row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px !important;
    }

    .course-card {
        min-height: 255px;
    }
}

@media (max-width: 390px) {
    .courses-list-section .row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px !important;
    }

    .course-card {
        min-height: 238px;
        padding: 14px 12px;
    }
}

/* ===============================
   SIMPLE COURSE GRID - WEB + MOBILE
================================ */

.course-grid {
    display: grid !important;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.course-mini-card {
    min-height: 155px;
    padding: 22px 16px;
    border-radius: 24px;
    text-align: center;
    text-decoration: none;

    background:
            radial-gradient(circle at top right, rgba(56,189,248,.18), transparent 40%),
            var(--card);

    border: 1px solid var(--navbar-border);
    box-shadow: 0 14px 34px rgba(15,23,42,.10);

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;

    transition: .25s ease;
}

.course-mini-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.course-mini-icon {
    width: 54px;
    height: 54px;
    border-radius: 18px;

    display: flex;
    align-items: center;
    justify-content: center;

    font-size: 1.8rem;

    background: rgba(56,189,248,.14);
    border: 1px solid rgba(56,189,248,.25);
}

.course-mini-card h3 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 900;
    color: var(--text);
    line-height: 1.3;
}

.course-mini-card span {
    font-size: .84rem;
    font-weight: 900;
    color: var(--primary);
}

body.light .course-mini-card {
    background: #ffffff;
    border-color: rgba(2,132,199,.14);
}

/* TABLET */
@media (max-width: 991px) {
    .course-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 14px;
    }
}

/* MOBILE */
@media (max-width: 768px) {
    .course-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    .course-mini-card {
        min-height: 138px;
        padding: 18px 10px;
        border-radius: 20px;
    }

    .course-mini-icon {
        width: 46px;
        height: 46px;
        border-radius: 15px;
        font-size: 1.5rem;
    }

    .course-mini-card h3 {
        font-size: .9rem;
    }

    .course-mini-card span {
        font-size: .76rem;
    }
}
.course-mini-icon {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    background: linear-gradient(135deg, #e0f7ff, #f8fdff);
    border: 1px solid rgba(56,189,248,.35);
    box-shadow: 0 10px 24px rgba(15,23,42,.08);
}

body:not(.light) .course-mini-icon {
    background: rgba(56,189,248,.12);
    border-color: rgba(125,211,252,.25);
}
.course-mini-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    display: block;
}

.course-mini-icon span {
    font-size: 1.7rem;
    line-height: 1;
}

/* ===============================
   FINAL COURSES PAGE UI FIX
   Matches Interview Premium UI
================================ */

.courses-page {
    background:
            radial-gradient(circle at top right, rgba(56,189,248,.14), transparent 34%),
            var(--bg);
}

.courses-hero {
    padding: 22px 8px 20px;
}

.courses-hero-card {
    max-width: 1120px;
    padding: 30px 26px;
    border-radius: 30px;
}

.course-search-form {
    max-width: 900px;
}

.course-seo-intro {
    padding: 12px 8px 20px;
}

.course-seo-card {
    max-width: 1120px;
    padding: 24px;
    border-radius: 26px;
}

.courses-list-section {
    padding: 28px 8px 64px;
}

.course-grid {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px !important;
}

.course-mini-card {
    min-height: 170px;
    padding: 22px 14px;
    border-radius: 24px;
    text-align: center;
    text-decoration: none;

    background:
            radial-gradient(circle at top right, rgba(56,189,248,.16), transparent 38%),
            var(--card);

    border: 1px solid var(--navbar-border);
    box-shadow: 0 14px 34px rgba(15,23,42,.10);

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 10px;

    transition: .25s ease;
}

.course-mini-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.course-mini-icon {
    width: 52px;
    height: 52px;
    border-radius: 18px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: rgba(56,189,248,.12);
    border: 1px solid rgba(56,189,248,.24);
}

.course-mini-icon img {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.course-mini-icon span {
    font-size: 1.6rem;
}

.course-mini-card h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 900;
    line-height: 1.3;
    color: var(--text);

    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 42px;
}

.course-mini-card > span {
    font-size: .78rem;
    font-weight: 900;
    color: var(--primary) !important;
}

/* LIGHT */
body.light .course-mini-card,
body.light .course-seo-card,
body.light .courses-hero-card {
    background: #ffffff !important;
    border-color: rgba(2,132,199,.14) !important;
    box-shadow: 0 12px 30px rgba(15,23,42,.08);
}

/* DARK */
body:not(.light) .course-mini-card {
    background:
            radial-gradient(circle at top right, rgba(56,189,248,.16), transparent 38%),
            rgba(15,23,42,.94) !important;
    border-color: rgba(125,211,252,.16) !important;
}

@media (max-width: 768px) {
    .courses-hero-card {
        padding: 22px 16px !important;
        border-radius: 24px !important;
    }

    .courses-hero-card h1 {
        font-size: 1.45rem !important;
    }

    .courses-hero-card p {
        font-size: .82rem !important;
        line-height: 1.55 !important;
    }

    .course-search-form {
        grid-template-columns: 1fr !important;
    }

    .course-search-form .form-control,
    .course-search-form .form-select,
    .course-search-form .btn {
        height: 46px !important;
        border-radius: 14px !important;
        font-size: .82rem !important;
    }

    .course-chip-grid {
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        justify-content: flex-start !important;
    }

    .course-chip-grid::-webkit-scrollbar {
        display: none;
    }

    .course-chip {
        flex: 0 0 auto;
        font-size: .78rem !important;
        padding: 8px 12px !important;
    }

    .course-seo-card {
        padding: 18px 14px !important;
        border-radius: 22px !important;
    }

    .course-seo-card h2 {
        font-size: 1rem !important;
    }

    .course-seo-card p {
        font-size: .78rem !important;
        line-height: 1.6 !important;
    }

    .section-heading h2 {
        font-size: 1.25rem !important;
    }

    .section-heading p {
        font-size: .78rem !important;
    }

    .course-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
        gap: 10px !important;
    }

    .course-mini-card {
        min-height: 130px !important;
        padding: 12px 6px !important;
        border-radius: 18px !important;
    }

    .course-mini-icon {
        width: 42px !important;
        height: 42px !important;
        border-radius: 14px !important;
    }

    .course-mini-icon img {
        width: 27px !important;
        height: 27px !important;
    }

    .course-mini-card h3 {
        font-size: .72rem !important;
        min-height: 32px !important;
    }

    .course-mini-card > span {
        font-size: .62rem !important;
    }
}

@media (max-width: 390px) {
    .course-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    }

    .course-mini-card {
        min-height: 135px !important;
    }
}