/* =============================================================
   UniStudy — Library & Library Details
   نطاق: html body.uni-ui .uni-lib-page
   ============================================================= */

html body.uni-ui .uni-lib-page {
    --lib-primary: #2563eb;
    --lib-primary-dark: #1d4ed8;
    --lib-accent: #10b981;
    --lib-dark: #0f172a;
    --lib-body: #334155;
    --lib-muted: #64748b;
    --lib-muted-2: #94a3b8;
    --lib-border: #e2e8f0;
    --lib-border-strong: #cbd5e1;
    --lib-surface: #ffffff;
    --lib-surface-2: #f8fafc;
    --lib-surface-3: #f1f5f9;
    --lib-shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --lib-shadow: 0 8px 24px -8px rgba(15, 23, 42, 0.12);
    --lib-shadow-md: 0 14px 36px -10px rgba(15, 23, 42, 0.18);
    --lib-radius: 1rem;
    --lib-radius-sm: 0.75rem;
    --lib-radius-xs: 0.5rem;

    background: linear-gradient(180deg, #eef2f7 0%, #f8fafc 360px, #ffffff 100%);
    position: relative;
}

/* ========== HERO ========== */
html body.uni-ui .uni-lib-hero {
    position: relative;
    padding: 2.25rem 0 2.5rem;
    color: #fff;
    overflow: hidden;
    isolation: isolate;
    background:
        radial-gradient(1200px 420px at 10% -20%, rgba(37, 99, 235, 0.5) 0%, transparent 60%),
        radial-gradient(900px 380px at 90% 0%, rgba(16, 185, 129, 0.3) 0%, transparent 55%),
        linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #0f766e 100%);
    border-bottom: 1px solid rgba(226, 232, 240, 0.4);
}

html body.uni-ui .uni-lib-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 38px 38px;
    opacity: 0.5;
    pointer-events: none;
    z-index: -1;
}

@media (min-width: 768px) {
    html body.uni-ui .uni-lib-hero {
        padding: 3rem 0 3.25rem;
    }
}

html body.uni-ui .uni-lib-hero__inner {
    position: relative;
    z-index: 1;
}

html body.uni-ui .uni-lib-breadcrumb {
    margin-bottom: 0.75rem;
}

/* حماية من قاعدة Materialize: nav i {display:block; font-size:24px; height:56px; line-height:56px;}
   لإعادة ضبط أيقونات FontAwesome داخل breadcrumb المكتبة */
html body.uni-ui .uni-lib-breadcrumb i,
html body.uni-ui nav.uni-lib-breadcrumb i {
    display: inline-block !important;
    height: auto !important;
    width: auto !important;
    font-size: inherit !important;
    line-height: 1 !important;
    color: inherit !important;
    background: transparent !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    float: none !important;
    vertical-align: middle !important;
    text-shadow: none !important;
}

html body.uni-ui .uni-lib-back {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.4rem 0.85rem;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.18s ease;
}

html body.uni-ui .uni-lib-back:hover,
html body.uni-ui .uni-lib-back:focus-visible {
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.38);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
    outline: none;
}

html body.uni-ui .uni-lib-eyebrow {
    display: inline-block;
    margin: 0 0 0.5rem;
    padding: 0.25rem 0.85rem;
    background: rgba(16, 185, 129, 0.18);
    border: 1px solid rgba(16, 185, 129, 0.42);
    border-radius: 999px;
    color: #d1fae5;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

[dir="rtl"] html body.uni-ui .uni-lib-eyebrow {
    text-transform: none;
    letter-spacing: normal;
}

html body.uni-ui .uni-lib-title {
    margin: 0 0 0.5rem;
    font-size: clamp(1.55rem, 4vw, 2.4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: #fff;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

html body.uni-ui .uni-lib-lead {
    margin: 0;
    max-width: 54rem;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.92);
}

@media (min-width: 768px) {
    html body.uni-ui .uni-lib-lead {
        font-size: 1rem;
    }
}

html body.uni-ui .uni-lib-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.1rem;
}

html body.uni-ui .uni-lib-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

html body.uni-ui .uni-lib-stat i {
    color: rgba(255, 255, 255, 0.8);
}

/* ========== BODY ========== */
html body.uni-ui .uni-lib-body {
    padding: 1.75rem 0 3rem;
}

@media (min-width: 768px) {
    html body.uni-ui .uni-lib-body {
        padding: 2.5rem 0 4rem;
    }
}

/* ========== BOOKS GRID (library index) ========== */
html body.uni-ui .uni-lib-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

@media (min-width: 640px) {
    html body.uni-ui .uni-lib-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

html body.uni-ui .uni-lib-card {
    display: flex;
    flex-direction: column;
    background: var(--lib-surface);
    border: 1px solid var(--lib-border);
    border-radius: var(--lib-radius-sm);
    box-shadow: var(--lib-shadow-sm);
    overflow: hidden;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

html body.uni-ui .uni-lib-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lib-shadow-md);
    border-color: var(--lib-border-strong);
}

html body.uni-ui .uni-lib-card__media {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--lib-surface-3);
}

html body.uni-ui .uni-lib-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

html body.uni-ui .uni-lib-card:hover .uni-lib-card__media img {
    transform: scale(1.05);
}

html body.uni-ui .uni-lib-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1rem 1.1rem 1.1rem;
    gap: 0.55rem;
}

html body.uni-ui .uni-lib-card__title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.4;
    color: var(--lib-dark);
    letter-spacing: -0.01em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

html body.uni-ui .uni-lib-card__subtitle {
    margin: 0;
    font-size: 0.875rem;
    color: var(--lib-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

html body.uni-ui .uni-lib-card__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.25rem;
    color: var(--lib-muted);
    font-size: 0.8rem;
    font-weight: 500;
}

html body.uni-ui .uni-lib-card__meta i {
    color: var(--lib-primary);
    font-size: 0.75rem;
}

html body.uni-ui .uni-lib-card__actions {
    margin-top: auto;
    padding-top: 0.75rem;
}

html body.uni-ui .uni-lib-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    width: 100%;
    padding: 0.65rem 1rem;
    background: linear-gradient(135deg, var(--lib-primary) 0%, #3b82f6 100%);
    color: #fff !important;
    border: 0;
    border-radius: var(--lib-radius-xs);
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none !important;
    cursor: pointer;
    box-shadow: 0 6px 18px -8px rgba(37, 99, 235, 0.5);
    transition: all 0.18s ease;
}

html body.uni-ui .uni-lib-btn:hover,
html body.uni-ui .uni-lib-btn:focus-visible {
    background: linear-gradient(135deg, var(--lib-primary-dark) 0%, var(--lib-primary) 100%);
    transform: translateY(-1px);
    color: #fff !important;
    box-shadow: 0 10px 22px -8px rgba(37, 99, 235, 0.55);
    outline: none;
}

html body.uni-ui .uni-lib-btn--ghost {
    background: var(--lib-surface-2);
    color: var(--lib-dark) !important;
    border: 1.5px solid var(--lib-border);
    box-shadow: none;
}

html body.uni-ui .uni-lib-btn--ghost:hover,
html body.uni-ui .uni-lib-btn--ghost:focus-visible {
    background: var(--lib-surface);
    border-color: var(--lib-primary);
    color: var(--lib-primary) !important;
}

/* ========== EMPTY STATE ========== */
html body.uni-ui .uni-lib-empty {
    padding: 3rem 1.5rem;
    text-align: center;
    background: var(--lib-surface);
    border: 1.5px dashed var(--lib-border);
    border-radius: var(--lib-radius-sm);
    color: var(--lib-muted);
}

html body.uni-ui .uni-lib-empty i {
    font-size: 2.5rem;
    color: var(--lib-muted-2);
    margin-bottom: 0.75rem;
}

html body.uni-ui .uni-lib-empty p {
    margin: 0;
    font-size: 0.95rem;
}

/* ========== DETAILS PAGE ========== */
html body.uni-ui .uni-lib-layout {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 992px) {
    html body.uni-ui .uni-lib-layout {
        grid-template-columns: minmax(0, 2.35fr) minmax(280px, 1fr);
    }
}

html body.uni-ui .uni-lib-main {
    min-width: 0;
}

html body.uni-ui .uni-lib-panel {
    background: var(--lib-surface);
    border: 1px solid var(--lib-border);
    border-radius: var(--lib-radius);
    box-shadow: var(--lib-shadow-sm);
    overflow: hidden;
    margin-bottom: 1.25rem;
}

html body.uni-ui .uni-lib-panel__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--lib-border);
    background: var(--lib-surface-2);
}

html body.uni-ui .uni-lib-panel__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--lib-primary) 0%, #3b82f6 100%);
    color: #fff;
    border-radius: var(--lib-radius-xs);
    font-size: 0.95rem;
    box-shadow: 0 4px 12px -4px rgba(37, 99, 235, 0.45);
}

html body.uni-ui .uni-lib-panel__title {
    margin: 0;
    font-size: 1rem;
    font-weight: 800;
    color: var(--lib-dark);
    letter-spacing: -0.01em;
    flex: 1;
    min-width: 0;
}

html body.uni-ui .uni-lib-panel__body {
    padding: 1.25rem;
}

html body.uni-ui .uni-lib-panel__body--flush {
    padding: 0;
}

/* ========== BOOK COVER (details) ========== */
html body.uni-ui .uni-lib-cover {
    width: 100%;
    height: auto;
    display: block;
    max-height: 640px;
    object-fit: contain;
    background: var(--lib-surface-3);
}

html body.uni-ui .uni-lib-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    color: var(--lib-muted);
    font-size: 0.875rem;
}

html body.uni-ui .uni-lib-meta-row .uni-lib-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

html body.uni-ui .uni-lib-meta-row .uni-lib-meta-item i {
    color: var(--lib-primary);
}

/* ========== VIDEO EMBED ========== */
html body.uni-ui .uni-lib-video {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
}

html body.uni-ui .uni-lib-video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ========== DOWNLOAD CARD ========== */
html body.uni-ui .uni-lib-download {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    border: 1.5px solid var(--lib-border);
    border-radius: var(--lib-radius-sm);
}

html body.uni-ui .uni-lib-download__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: #fff;
    border: 1.5px solid var(--lib-border);
    border-radius: var(--lib-radius-xs);
    color: var(--lib-primary);
    font-size: 1.4rem;
}

html body.uni-ui .uni-lib-download__info {
    flex: 1;
    min-width: 0;
}

html body.uni-ui .uni-lib-download__title {
    margin: 0 0 0.15rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--lib-dark);
}

html body.uni-ui .uni-lib-download__meta {
    margin: 0;
    font-size: 0.825rem;
    color: var(--lib-muted);
}

html body.uni-ui .uni-lib-download__action {
    flex-shrink: 0;
}

/* ========== SIDEBAR RELATED ========== */
html body.uni-ui .uni-lib-related {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    max-height: 640px;
    overflow-y: auto;
}

html body.uni-ui .uni-lib-related-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem;
    background: var(--lib-surface);
    border: 1px solid transparent;
    border-radius: var(--lib-radius-xs);
    text-decoration: none !important;
    color: inherit;
    transition: background 0.16s ease, border-color 0.16s ease;
}

html body.uni-ui .uni-lib-related-item:hover,
html body.uni-ui .uni-lib-related-item:focus-visible {
    background: var(--lib-surface-2);
    border-color: var(--lib-border);
    outline: none;
}

html body.uni-ui .uni-lib-related-item.is-active {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.35);
}

html body.uni-ui .uni-lib-related-item__thumb {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: var(--lib-radius-xs);
    background: var(--lib-surface-3);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

html body.uni-ui .uni-lib-related-item__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

html body.uni-ui .uni-lib-related-item__body {
    flex: 1;
    min-width: 0;
}

html body.uni-ui .uni-lib-related-item__title {
    margin: 0 0 0.15rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--lib-dark);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

html body.uni-ui .uni-lib-related-item__meta {
    margin: 0;
    font-size: 0.75rem;
    color: var(--lib-muted);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 575.98px) {
    html body.uni-ui .uni-lib-hero {
        padding: 1.75rem 0 2rem;
    }

    html body.uni-ui .uni-lib-title {
        font-size: clamp(1.35rem, 6vw, 1.75rem);
    }

    html body.uni-ui .uni-lib-grid {
        grid-template-columns: 1fr;
    }

    html body.uni-ui .uni-lib-download {
        flex-direction: column;
        text-align: center;
    }

    html body.uni-ui .uni-lib-download__info {
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    html body.uni-ui .uni-lib-page * {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}