/* ==========================================================================
   BIU Library Repository Stylesheet v2.0
   ========================================================================== */

:root {
    --biu-blue: #1e3a8a;
    --biu-blue-dark: #172554;
    --biu-blue-light: #eff6ff;
    --biu-gold: #d97706;
    --biu-gold-hover: #b45309;
    --biu-gray-dark: #374151;
    --biu-gray-medium: #6b7280;
    --biu-gray-light: #f3f4f6;
    --biu-white: #ffffff;
    --biu-border: #e5e7eb;
    --biu-shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.05);
    --biu-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.05);
    --biu-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.05);
    --biu-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base View Container */
.brr-repository-area {
    padding-top: 40px;
    padding-bottom: 60px;
    background-color: #fcfcfd;
}

.brr-card {
    background-color: var(--biu-white);
    border: 1px solid var(--biu-border);
    border-radius: 8px;
    box-shadow: var(--biu-shadow-sm);
    transition: var(--biu-transition);
}

.brr-card:hover {
    box-shadow: var(--biu-shadow-md);
}

/* Publication Card */
.brr-pub-card {
    background: var(--biu-white);
    border: 1px solid var(--biu-border);
    border-radius: 10px;
    padding: 24px;
    box-shadow: var(--biu-shadow-sm);
    transition: var(--biu-transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.brr-pub-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--biu-blue);
    transition: var(--biu-transition);
}

.brr-pub-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--biu-shadow-lg);
}

.brr-pub-card:hover::before {
    width: 6px;
    background-color: var(--biu-gold);
}

.brr-pub-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.brr-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
}

.brr-badge--journal {
    background-color: #dbeafe;
    color: #1e40af;
}

.brr-badge--thesis {
    background-color: #fef3c7;
    color: #92400e;
}

.brr-badge--conference {
    background-color: #d1fae5;
    color: #065f46;
}

.brr-badge--textbook {
    background-color: #e0e7ff;
    color: #3730a3;
}

.brr-pub-card__year {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--biu-gray-medium);
}

.brr-pub-card__title {
    font-size: 1.2rem;
    line-height: 1.4;
    font-weight: 700;
    margin: 0 0 10px;
}

.brr-pub-card__title a {
    color: var(--biu-blue);
    text-decoration: none;
    transition: var(--biu-transition);
}

.brr-pub-card__title a:hover {
    color: var(--biu-gold);
}

.brr-pub-card__authors {
    font-size: 0.9rem;
    color: var(--biu-gray-dark);
    margin-bottom: 12px;
}

.brr-pub-card__authors .brr-label {
    font-weight: 600;
    color: var(--biu-gray-medium);
    margin-right: 5px;
}

.brr-pub-card__meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--biu-gray-medium);
    margin-bottom: 0;
}

.brr-pub-card__meta .brr-icon {
    font-size: 1.1rem;
    width: auto;
    height: auto;
    color: var(--biu-blue);
}

.brr-pub-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--biu-border);
}

.brr-pub-card__stats {
    display: flex;
    gap: 15px;
}

.brr-stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    color: var(--biu-gray-medium);
}

.brr-stat-item .dashicons {
    font-size: 1.1rem;
    width: auto;
    height: auto;
}

.brr-pub-card__link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--biu-blue);
    text-decoration: none;
    transition: var(--biu-transition);
}

.brr-pub-card__link:hover {
    color: var(--biu-gold);
}

/* Sidebar Filters */
.brr-sidebar-filters {
    background: var(--biu-white);
    border: 1px solid var(--biu-border);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--biu-shadow-sm);
}

.brr-sidebar-filters__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--biu-blue);
    margin-top: 0;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--biu-border);
}

.brr-filter-group {
    margin-bottom: 18px;
}

.brr-filter-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--biu-gray-dark);
    margin-bottom: 6px;
}

.brr-filter-group select.form-control,
.brr-filter-group input.form-control {
    width: 100%;
    padding: 8px 12px;
    font-size: 0.9rem;
    border: 1px solid var(--biu-border);
    border-radius: 6px;
    background-color: #fafafa;
    color: var(--biu-gray-dark);
    outline: none;
    transition: var(--biu-transition);
}

.brr-filter-group select.form-control:focus,
.brr-filter-group input.form-control:focus {
    border-color: var(--biu-blue);
    background-color: var(--biu-white);
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.1);
}

.brr-btn-filter {
    background-color: var(--biu-blue);
    border: none;
    color: var(--biu-white);
    padding: 10px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--biu-transition);
}

.brr-btn-filter:hover {
    background-color: var(--biu-blue-dark);
}

/* Autocomplete Dropdown */
.brr-autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--biu-white);
    border-radius: 8px;
    box-shadow: var(--biu-shadow-lg);
    z-index: 1000;
    margin-top: 8px;
    border: 1px solid var(--biu-border);
    overflow: hidden;
}

.brr-autocomplete-suggestion {
    padding: 12px 20px;
    border-bottom: 1px solid var(--biu-gray-light);
    cursor: pointer;
    transition: var(--biu-transition);
}

.brr-autocomplete-suggestion:last-child {
    border-bottom: none;
}

.brr-autocomplete-suggestion:hover {
    background-color: var(--biu-blue-light);
}

.brr-autocomplete-suggestion__title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--biu-blue);
    margin-bottom: 4px;
}

.brr-autocomplete-suggestion__meta {
    font-size: 0.8rem;
    color: var(--biu-gray-medium);
}

/* Citation Tabs */
.brr-citation-tab-btn {
    transition: var(--biu-transition);
}

.brr-citation-tab-btn:hover {
    color: var(--biu-blue) !important;
}

.brr-citation-tab-btn.active {
    color: var(--biu-blue) !important;
    border-bottom-color: var(--biu-blue) !important;
}

.brr-citation-pane {
    animation: fadeIn 0.2s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(2px); }
    to { opacity: 1; transform: translateY(0); }
}

}

/* ==========================================================================
   Checkout Modal & Payment Gateway Overlay Styles
   ========================================================================== */
.brr-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease-in-out;
    z-index: 9999;
}

.brr-modal-overlay.brr-modal-active {
    opacity: 1;
    visibility: visible;
}

.brr-modal-content {
    background: var(--biu-white);
    border-radius: 12px;
    width: 100%;
    max-width: 480px;
    padding: 30px;
    box-shadow: var(--biu-shadow-lg);
    position: relative;
    transform: scale(0.9);
    transition: all 0.3s ease-in-out;
}

.brr-modal-overlay.brr-modal-active .brr-modal-content {
    transform: scale(1);
}

.brr-modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: 600;
    color: var(--biu-gray-medium);
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.brr-modal-close:hover {
    color: var(--biu-gray-dark);
}

.brr-modal-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--biu-blue);
    margin: 0 0 5px;
}

.brr-modal-subtitle {
    font-size: 0.9rem;
    color: var(--biu-gray-medium);
    margin-bottom: 20px;
}

.brr-modal-form .brr-form-group {
    margin-bottom: 18px;
    text-align: left;
}

.brr-modal-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--biu-gray-dark);
    margin-bottom: 6px;
}

.brr-modal-form input {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.95rem;
    border: 1px solid var(--biu-border);
    border-radius: 6px;
    background-color: var(--biu-gray-light);
    outline: none;
    transition: var(--biu-transition);
}

.brr-modal-form input:focus {
    border-color: var(--biu-blue);
    background-color: var(--biu-white);
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.1);
}

.brr-modal-submit-btn {
    width: 100%;
    background-color: var(--biu-blue);
    color: var(--biu-white);
    border: none;
    padding: 12px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--biu-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.brr-modal-submit-btn:hover {
    background-color: var(--biu-blue-dark);
}

/* Loading Overlay for Verification */
.brr-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease-in-out;
    z-index: 10000;
}

.brr-loading-overlay.brr-loading-active {
    opacity: 1;
    visibility: visible;
}

.brr-loading-spinner-box {
    text-align: center;
}

.brr-spinner {
    border: 4px solid rgba(30, 58, 138, 0.1);
    width: 50px;
    height: 50px;
    border-left-color: var(--biu-blue);
    border-radius: 50%;
    animation: brr-spin 1s linear infinite;
    margin: 0 auto 15px;
}

.brr-loading-text {
    font-weight: 600;
    color: var(--biu-blue);
    font-size: 1.05rem;
}

@keyframes brr-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Custom Alerts */
.brr-alert {
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.brr-alert-danger {
    background-color: #fef2f2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.brr-alert-success {
    background-color: #ecfdf5;
    border: 1px solid #6ee7b7;
    color: #065f46;
}

/* Access Control Price Badges */
.brr-badge--free {
    background-color: #d1fae5;
    color: #065f46;
}

.brr-badge--purchase {
    background-color: #dbeafe;
    color: #1e40af;
}

.brr-badge--subscription {
    background-color: #fef3c7;
    color: #92400e;
}

.brr-price-tag {
    font-size: 1.15rem;
    font-weight: 800;
    color: #1e3a8a;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* My Library & Saved Items Layout */
.brr-my-library-tabs {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.brr-tab-nav {
    display: flex;
    gap: 10px;
    border-bottom: 2px solid var(--biu-border);
    padding-bottom: 0;
    margin-bottom: 10px;
    list-style: none;
}

.brr-tab-nav li a {
    display: block;
    padding: 12px 20px;
    font-weight: 600;
    color: var(--biu-gray-medium);
    text-decoration: none;
    border-bottom: 3px solid transparent;
    transition: var(--biu-transition);
}

.brr-tab-nav li.active a,
.brr-tab-nav li a:hover {
    color: var(--biu-blue);
    border-bottom-color: var(--biu-blue);
}

.brr-tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.brr-tab-panel.active {
    display: block;
}

/* Bookmark Buttons */
.brr-bookmark-btn {
    border: 1px solid var(--biu-border);
    background: #fff;
    color: var(--biu-gray-dark);
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--biu-transition);
}

.brr-bookmark-btn:hover {
    background: var(--biu-gray-light);
    color: var(--biu-blue);
}

.brr-bookmark-btn.brr-bookmarked {
    background: var(--biu-blue-light);
    border-color: rgba(30, 58, 138, 0.2);
    color: var(--biu-blue);
}

.brr-btn-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: brr-spin 0.6s linear infinite;
    display: inline-block;
}

/* Recovery Form Box */
.brr-recovery-box {
    background: #f9fafb;
    border: 1px solid var(--biu-border);
    border-radius: 8px;
    padding: 24px;
    max-width: 500px;
    margin: 20px 0;
}