/* ==========================================================================
   QueStudy — Learning Resources page (templates/page-learning-resources.php)
   Modern editorial layout rendered inside the app shell.
   ========================================================================== */

.qs-page-resources {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

/* -------------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------------- */
.qsr-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    border-radius: var(--qs-app-radius-lg);
    background: linear-gradient(135deg, #0f2a63 0%, #1d4ed8 55%, #3b82f6 100%);
    color: #fff;
    padding: clamp(42px, 6vw, 76px) clamp(22px, 5vw, 64px);
}

.qsr-hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.qsr-hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.55;
}

.qsr-hero-glow--1 {
    width: 420px;
    height: 420px;
    top: -180px;
    right: -80px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.9), transparent 70%);
}

.qsr-hero-glow--2 {
    width: 340px;
    height: 340px;
    bottom: -160px;
    left: -60px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.9), transparent 70%);
}

.qsr-hero-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}

.qsr-hero-inner {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
}

.qsr-hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(6px);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.qsr-kicker-ico {
    display: inline-grid;
    place-items: center;
    width: 16px;
    height: 16px;
}

.qsr-kicker-ico svg {
    width: 15px;
    height: 15px;
}

.qsr-hero-title {
    margin: 18px 0 0;
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.08;
    color: #fff;
}

.qsr-hero-desc {
    margin: 14px auto 0;
    max-width: 620px;
    font-size: clamp(0.95rem, 1.3vw, 1.125rem);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.82);
}

/* Search */
.qsr-search {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 28px auto 0;
    max-width: 560px;
    padding: 6px 6px 6px 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.qsr-search:focus-within {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.45);
    box-shadow: 0 10px 30px -8px rgba(0, 0, 0, 0.35);
}

.qsr-search-ico {
    display: grid;
    place-items: center;
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.7);
    flex: none;
}

.qsr-search-ico svg {
    width: 18px;
    height: 18px;
}

.qsr-search input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: 0;
    outline: 0;
    padding: 12px 8px;
    color: #fff;
    font-size: 0.9375rem;
    font-family: inherit;
}

.qsr-search input::placeholder {
    color: rgba(255, 255, 255, 0.55);
}

.qsr-search-btn {
    flex: none;
    padding: 11px 22px;
    border: 0;
    border-radius: 12px;
    background: #fff;
    color: var(--qs-primary);
    font-weight: 700;
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.qsr-search-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.35);
}

/* Hero meta */
.qsr-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 22px;
}

.qsr-hero-meta span {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 0.78rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
}

/* -------------------------------------------------------------------------
   Category tabs
   ------------------------------------------------------------------------- */
.qsr-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.qsr-tab {
    display: inline-flex;
    align-items: center;
    padding: 9px 20px;
    border-radius: 999px;
    background: var(--qs-app-card);
    border: 1px solid var(--qs-app-border);
    color: var(--qs-app-text-soft);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.qsr-tab:hover {
    border-color: var(--qs-app-primary-border);
    color: var(--qs-app-primary);
    transform: translateY(-1px);
}

.qsr-tab--active {
    background: linear-gradient(135deg, var(--qs-primary), var(--qs-primary-dark));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 20px -8px rgba(37, 99, 235, 0.55);
}

/* -------------------------------------------------------------------------
   Content layout
   ------------------------------------------------------------------------- */
.qsr-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 28px;
    align-items: start;
}

.qsr-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Featured resource */
.qsr-featured {
    position: relative;
    overflow: hidden;
    border-radius: var(--qs-app-radius-lg);
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 45%, #3b82f6 100%);
    color: #fff;
    padding: clamp(26px, 4vw, 40px);
}

.qsr-featured::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 85% -20%, rgba(255, 255, 255, 0.25), transparent 45%);
    pointer-events: none;
}

.qsr-featured-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.25);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.qsr-featured h2 {
    position: relative;
    margin: 14px 0 8px;
    font-size: clamp(1.25rem, 2.4vw, 1.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: #fff;
}

.qsr-featured p {
    position: relative;
    margin: 0;
    max-width: 640px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.65;
}

.qsr-featured-meta {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.qsr-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    font-size: 0.78rem;
    font-weight: 600;
    color: #fff;
}

.qsr-chip svg {
    width: 14px;
    height: 14px;
}

.qsr-featured-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: 999px;
    background: #fff;
    color: var(--qs-primary);
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.qsr-featured-cta svg {
    width: 15px;
    height: 15px;
}

.qsr-featured-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px -8px rgba(0, 0, 0, 0.35);
}

/* Resource grid */
.qsr-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

/* Resource card */
.qsr-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 24px;
    border-radius: var(--qs-app-radius);
    background: var(--qs-app-card);
    border: 1px solid var(--qs-app-border);
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.qsr-card:hover {
    transform: translateY(-4px);
    border-color: var(--qs-app-primary-border);
    box-shadow: var(--qs-app-shadow-lg);
}

.qsr-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.qsr-card-ico {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: color-mix(in srgb, var(--qsr-tone, #2563eb) 12%, transparent);
    color: var(--qsr-tone, #2563eb);
    flex: none;
}

.qsr-card-ico svg {
    width: 24px;
    height: 24px;
}

.qsr-card-badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--qsr-tone, #2563eb) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--qsr-tone, #2563eb) 22%, transparent);
    color: var(--qsr-tone, #2563eb);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.qsr-card h3 {
    margin: 0;
    font-size: 1.02rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.35;
    color: var(--qs-app-text);
}

.qsr-card p {
    margin: 0;
    font-size: 0.86rem;
    line-height: 1.6;
    color: var(--qs-app-faint);
}

.qsr-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px dashed var(--qs-app-border);
}

.qsr-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--qs-app-muted);
}

.qsr-meta svg {
    width: 14px;
    height: 14px;
}

.qsr-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--qs-app-primary);
    text-decoration: none;
    transition: gap 0.2s ease;
}

.qsr-download svg {
    width: 14px;
    height: 14px;
}

.qsr-download:hover {
    gap: 9px;
}

/* Card tone modifiers */
.qsr-tone-blue {
    --qsr-tone: #2563eb;
}

.qsr-tone-emerald {
    --qsr-tone: #10b981;
}

.qsr-tone-violet {
    --qsr-tone: #8b5cf6;
}

.qsr-tone-amber {
    --qsr-tone: #f59e0b;
}

.qsr-tone-rose {
    --qsr-tone: #f43f5e;
}

/* Pagination */
.qsr-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qsr-page {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: 12px;
    background: var(--qs-app-card);
    border: 1px solid var(--qs-app-border);
    color: var(--qs-app-text-soft);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.qsr-page:hover {
    border-color: var(--qs-app-primary-border);
    color: var(--qs-app-primary);
    transform: translateY(-1px);
}

.qsr-page--active {
    background: linear-gradient(135deg, var(--qs-primary), var(--qs-primary-dark));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 20px -8px rgba(37, 99, 235, 0.55);
}

.qsr-page--next {
    gap: 6px;
}

.qsr-page--next svg {
    width: 16px;
    height: 16px;
}

/* -------------------------------------------------------------------------
   Sidebar widgets
   ------------------------------------------------------------------------- */
.qsr-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.qsr-widget {
    padding: 22px;
    border-radius: var(--qs-app-radius);
    background: var(--qs-app-card);
    border: 1px solid var(--qs-app-border);
}

.qsr-widget-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 16px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--qs-app-text);
}

.qsr-widget-title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--qs-app-border);
}

.qsr-cat-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.qsr-cat-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--qs-app-text-soft);
    text-decoration: none;
    font-size: 0.86rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.qsr-cat-list a:hover {
    background: var(--qs-app-primary-soft);
    color: var(--qs-app-primary);
}

.qsr-cat-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 26px;
    height: 22px;
    padding: 0 8px;
    border-radius: 999px;
    background: var(--qs-app-card-soft);
    color: var(--qs-app-muted);
    font-size: 0.72rem;
    font-weight: 700;
}

.qsr-cat-list a:hover .qsr-cat-count {
    background: var(--qs-app-primary);
    color: #fff;
}

.qsr-recent-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.qsr-recent-list li + li {
    border-top: 1px solid var(--qs-app-border);
}

.qsr-recent-list a {
    display: block;
    padding: 12px 2px;
    text-decoration: none;
    transition: transform 0.2s ease;
}

.qsr-recent-list a:hover {
    transform: translateX(3px);
}

.qsr-recent-title {
    display: block;
    font-size: 0.86rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--qs-app-text);
}

.qsr-recent-list a:hover .qsr-recent-title {
    color: var(--qs-app-primary);
}

.qsr-recent-date {
    display: block;
    margin-top: 4px;
    font-size: 0.74rem;
    color: var(--qs-app-muted);
}

/* -------------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------------- */
@media (max-width: 1120px) {
    .qsr-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .qsr-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .qsr-grid {
        grid-template-columns: 1fr;
    }

    .qsr-tabs {
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 6px;
        scroll-snap-type: x proximity;
        -webkit-overflow-scrolling: touch;
    }

    .qsr-tab {
        flex: none;
        scroll-snap-align: start;
    }

    .qsr-sidebar {
        grid-template-columns: 1fr;
    }

    .qsr-featured-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .qsr-search {
        flex-wrap: wrap;
        padding: 10px;
    }

    .qsr-search input {
        width: 100%;
        padding: 8px 4px;
    }

    .qsr-search-btn {
        width: 100%;
    }
}