/* Course catalog — Explore All Courses */

.rt-catalog {
    background: var(--rt-bg, #f4f6f9);
    min-height: calc(100vh - 4rem);
    padding: 2.5rem 0 4rem;
}

.rt-catalog-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.25rem;
    display: grid;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .rt-catalog-inner {
        grid-template-columns: 220px 1fr;
        gap: 2rem;
        align-items: start;
    }
}

/* Sidebar filters */
.rt-filters {
    background: #fff;
    border: 1px solid rgba(24, 102, 180, 0.1);
    border-radius: 16px;
    padding: 1.25rem;
    box-shadow: 0 2px 12px rgba(5, 10, 21, 0.06);
}

.rt-filters h2 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--rt-blue-dark);
    margin-bottom: 1.25rem;
}

.rt-filter-group {
    border-bottom: 1px solid #eef1f5;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.rt-filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.rt-filter-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.35rem 0;
    background: none;
    border: none;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--rt-blue-dark, #1F226E);
    cursor: pointer;
    text-align: left;
}

.rt-filter-toggle svg {
    transition: transform 0.2s;
    color: #94a3b8;
}

.rt-filter-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.rt-filter-body {
    margin-top: 0.75rem;
}

.rt-filter-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.45rem 0;
    font-size: 0.875rem;
    color: #475569;
    text-decoration: none;
    transition: color 0.15s;
}

.rt-filter-link:hover,
.rt-filter-link.is-active {
    color: var(--rt-blue);
    font-weight: 500;
}

.rt-filter-link svg {
    width: 14px;
    height: 14px;
    color: #cbd5e1;
}

.rt-filter-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0;
    font-size: 0.875rem;
    color: #475569;
    cursor: pointer;
}

.rt-filter-check input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--rt-blue);
    border-radius: 4px;
}

.rt-filters-actions {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rt-btn-filter {
    width: 100%;
    padding: 0.65rem;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: background 0.15s;
}

.rt-btn-filter--primary {
    background: var(--rt-orange);
    color: #000;
}

.rt-btn-filter--primary:hover {
    filter: brightness(1.05);
}

.rt-btn-filter--ghost {
    background: #f1f5f9;
    color: #475569;
}

/* Main grid */
.rt-catalog-main h1 {
    font-size: clamp(1.75rem, 3vw, 2.125rem);
    font-weight: 800;
    color: var(--rt-blue-dark, #1F226E);
    letter-spacing: -0.02em;
    margin-bottom: 0.35rem;
}

.rt-catalog-meta {
    font-size: 0.875rem;
    color: #64748b;
    margin-bottom: 1.75rem;
}

.rt-catalog-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .rt-catalog-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .rt-catalog-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.rt-catalog-card {
    background: #fff;
    border: 1px solid #e8ecf2;
    border-radius: 14px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
}

.rt-catalog-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(10, 25, 47, 0.1);
}

.rt-catalog-thumb {
    display: block;
    position: relative;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--rt-blue-mid), var(--rt-blue));
    overflow: hidden;
    flex-shrink: 0;
    text-decoration: none;
}

.rt-catalog-thumb-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 16 / 10;
}

.rt-catalog-body {
    padding: 1.1rem 1.15rem 0;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.rt-catalog-body h2 {
    font-size: 0.9375rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--rt-blue-dark, #1F226E);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rt-catalog-body h2 a {
    color: inherit;
    text-decoration: none;
}

.rt-catalog-body h2 a:hover {
    color: var(--rt-blue);
}

.rt-catalog-instructor {
    margin-top: 0.4rem;
    font-size: 0.8125rem;
    color: #64748b;
}

.rt-catalog-rating {
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8125rem;
    color: #475569;
}

.rt-catalog-rating .star {
    color: #f59e0b;
    font-size: 0.875rem;
}

.rt-catalog-duration {
    margin-top: 0.45rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--rt-slate, #64748b);
}

.rt-catalog-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1.15rem 1.15rem;
    margin-top: auto;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.rt-catalog-price {
    font-size: 1rem;
    font-weight: 800;
    color: var(--rt-blue-dark, #1F226E);
}

.rt-catalog-price--sale {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.rt-catalog-price del {
    font-size: 0.75rem;
    font-weight: 500;
    color: #94a3b8;
}

.rt-btn-enroll {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    background: var(--rt-orange) !important;
    border: none;
    border-radius: 9999px;
    text-decoration: none !important;
    white-space: nowrap;
    flex-shrink: 0;
    visibility: visible;
    opacity: 1;
    transition: filter 0.15s, transform 0.15s;
    box-shadow: 0 4px 16px rgba(0, 174, 239, 0.28);
    color: #fff !important;
}

.rt-btn-enroll {
    animation: rt-enroll-breathe 2.8s ease-in-out infinite;
}

.rt-btn-enroll:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
    color: #fff !important;
    animation-play-state: paused;
}

@keyframes rt-enroll-breathe {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 16px rgba(0, 174, 239, 0.28);
    }
    50% {
        transform: scale(1.045);
        box-shadow: 0 9px 26px rgba(0, 174, 239, 0.5);
    }
}

@media (prefers-reduced-motion: reduce) {
    .rt-btn-enroll {
        animation: none;
    }
}

.rt-catalog-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    background: #fff;
    border-radius: 16px;
    border: 1px dashed #cbd5e1;
    color: #64748b;
}

.rt-pagination {
    margin-top: 2.25rem;
}

/* Catalog pagination — premium prev/next + page pills */
.rt-catalog-pagination {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: #fff;
    border: 1px solid rgba(24, 102, 180, 0.1);
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(46, 49, 146, 0.06);
}

.rt-catalog-pagination__summary {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 500;
    color: #64748b;
    text-align: center;
}

.rt-catalog-pagination__bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    width: 100%;
}

.rt-catalog-pagination__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: 2.75rem;
    padding: 0.55rem 1.15rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
    cursor: pointer;
    white-space: nowrap;
}

.rt-catalog-pagination__btn--prev {
    background: #fff;
    color: var(--rt-blue-dark, #1F226E);
    border-color: rgba(24, 102, 180, 0.22);
    box-shadow: 0 1px 2px rgba(46, 49, 146, 0.04);
}

.rt-catalog-pagination__btn--prev:hover {
    background: var(--rt-blue-light, #eef0f9);
    border-color: rgba(24, 102, 180, 0.35);
    color: var(--rt-blue, #2E3192);
    transform: translateY(-1px);
}

.rt-catalog-pagination__btn--next {
    background: linear-gradient(135deg, var(--rt-blue, #2E3192) 0%, var(--rt-blue-dark, #1F226E) 100%);
    color: #fff;
    box-shadow: 0 6px 20px rgba(24, 102, 180, 0.28);
}

.rt-catalog-pagination__btn--next:hover {
    filter: brightness(1.06);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(24, 102, 180, 0.34);
    color: #fff;
}

.rt-catalog-pagination__btn.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
    box-shadow: none;
}

.rt-catalog-pagination__btn--next.is-disabled {
    background: #e2e8f0;
    color: #94a3b8;
}

.rt-catalog-pagination__icon {
    flex-shrink: 0;
}

.rt-catalog-pagination__pages {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem;
    background: #f8fafc;
    border: 1px solid #e8ecf2;
    border-radius: 9999px;
}

.rt-catalog-pagination__page {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.5rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #475569;
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
}

.rt-catalog-pagination__page:hover {
    background: #fff;
    color: var(--rt-blue, #2E3192);
}

.rt-catalog-pagination__page.is-active {
    background: var(--rt-orange, #00AEEF);
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 174, 239, 0.35);
}

.rt-catalog-pagination__ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.75rem;
    height: 2.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #94a3b8;
    letter-spacing: 0.08em;
}

.rt-catalog-pagination__meta {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #94a3b8;
}

@media (min-width: 768px) {
    .rt-catalog-pagination {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 1rem 1.5rem;
    }

    .rt-catalog-pagination__summary {
        text-align: left;
        flex: 1 1 auto;
        min-width: 12rem;
    }

    .rt-catalog-pagination__bar {
        flex: 0 1 auto;
        width: auto;
    }

    .rt-catalog-pagination__meta {
        flex: 1 1 auto;
        text-align: right;
        min-width: 8rem;
    }
}

@media (max-width: 639px) {
    .rt-catalog-pagination__btn span:not(.rt-catalog-pagination__icon) {
        font-size: 0.8125rem;
    }

    .rt-catalog-pagination__pages {
        order: 3;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .rt-catalog-pagination__bar {
        justify-content: space-between;
    }

    .rt-catalog-pagination__btn--prev,
    .rt-catalog-pagination__btn--next {
        flex: 1 1 calc(50% - 0.35rem);
        max-width: calc(50% - 0.35rem);
    }
}

.rt-mobile-filter-btn {
    display: flex;
    width: 100%;
    margin-bottom: 1rem;
    padding: 0.75rem;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: #fff;
    border: 1px solid #e8ecf2;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--rt-blue-dark, #1F226E);
    cursor: pointer;
}

@media (min-width: 1024px) {
    .rt-mobile-filter-btn {
        display: none;
    }

    .rt-filters-wrap.is-mobile {
        display: block !important;
    }
}

@media (max-width: 1023px) {
    .rt-filters-wrap {
        display: none;
    }

    .rt-filters-wrap.is-open {
        display: block;
    }

    .rt-catalog-footer {
        flex-wrap: wrap;
        gap: 0.65rem;
    }
}

/* DigiBox catalog color polish */
.rt-btn-filter--primary {
    background: var(--rt-orange);
    color: #fff;
}

.rt-btn-enroll {
    background: var(--rt-orange) !important;
    color: #fff !important;
    box-shadow: 0 4px 16px rgba(243, 112, 33, 0.32);
}

@keyframes rt-enroll-breathe {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 16px rgba(243, 112, 33, 0.28);
    }
    50% {
        transform: scale(1.045);
        box-shadow: 0 9px 26px rgba(243, 112, 33, 0.48);
    }
}

.rt-filter-link:hover,
.rt-filter-link.is-active {
    color: var(--rt-blue);
}

.rt-filter-check input {
    accent-color: var(--rt-blue);
}

.rt-catalog-pagination__page.is-active {
    background: var(--rt-orange);
    box-shadow: 0 4px 12px rgba(243, 112, 33, 0.35);
}

.rt-level-badge--all {
    background: linear-gradient(135deg, var(--rt-blue-mid), var(--rt-cyan));
}

.rt-catalog-search {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.rt-catalog-search input {
    flex: 1;
    min-width: 0;
    padding: 0.7rem 0.9rem;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 0.875rem;
    color: var(--rt-blue-dark);
    background: #fff;
}

.rt-catalog-search input:focus {
    outline: none;
    border-color: rgba(26, 92, 191, 0.45);
    box-shadow: 0 0 0 3px rgba(26, 92, 191, 0.12);
}

.rt-catalog-search button {
    padding: 0.7rem 1rem;
    border: none;
    border-radius: 10px;
    background: var(--rt-blue-dark);
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.rt-catalog-search button:hover {
    background: var(--rt-blue);
}

.rt-catalog a.text-brand-cyan {
    color: var(--rt-blue);
    font-weight: 600;
    text-decoration: none;
}

.rt-catalog a.text-brand-cyan:hover {
    color: var(--rt-orange);
}