/**
 * WebThinker Glossary — Full Standalone CSS
 * Loaded when Bootstrap is NOT detected on the site.
 * Includes its own grid, utilities, and all glossary styling.
 *
 * @package WT_Glossary
 */

/* ── CSS Custom Properties ────────────────────────────────────── */
:root {
    --wt-glossary-primary: #2563eb;
    --wt-glossary-primary-hover: #1d4ed8;
    --wt-glossary-primary-light: #dbeafe;
    --wt-glossary-dark: #1e293b;
    --wt-glossary-text: #334155;
    --wt-glossary-text-light: #64748b;
    --wt-glossary-border: #e2e8f0;
    --wt-glossary-bg: #ffffff;
    --wt-glossary-bg-subtle: #f8fafc;
    --wt-glossary-card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --wt-glossary-card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
    --wt-glossary-radius: 0;
    --wt-glossary-radius-sm: 0;
    --wt-glossary-transition: 0.25s ease;
    --wt-glossary-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ── Minimal Grid System (Bootstrap-compatible classes) ────────── */

.wt-glossary-wrapper *,
.wt-glossary-wrapper *::before,
.wt-glossary-wrapper *::after,
.wt-glossary-single-wrapper *,
.wt-glossary-single-wrapper *::before,
.wt-glossary-single-wrapper *::after {
    box-sizing: border-box;
}

.wt-glossary-wrapper .container,
.wt-glossary-single-wrapper .container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

.wt-glossary-wrapper .row,
.wt-glossary-single-wrapper .row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -0.75rem;
    margin-right: -0.75rem;
}

.wt-glossary-wrapper .col-12,
.wt-glossary-single-wrapper .col-12 {
    flex: 0 0 100%;
    max-width: 100%;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

@media (min-width: 768px) {

    .wt-glossary-wrapper .col-md-6,
    .wt-glossary-single-wrapper .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (min-width: 992px) {

    .wt-glossary-wrapper .col-lg-3,
    .wt-glossary-single-wrapper .col-lg-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }

    .wt-glossary-wrapper .col-lg-4,
    .wt-glossary-single-wrapper .col-lg-4 {
        flex: 0 0 33.3333%;
        max-width: 33.3333%;
    }
}

/* ── Wrapper ──────────────────────────────────────────────────── */

.wt-glossary-wrapper {
    font-family: var(--wt-glossary-font);
    color: var(--wt-glossary-text);
    line-height: 1.6;
    padding: 2rem 0;
}

/* ── Header: Title + Description ──────────────────────────────── */

.wt-glossary-header {
    text-align: center;
    margin-bottom: 2rem;
}

.wt-glossary-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--wt-glossary-dark);
    margin: 0 0 0.75rem 0;
    line-height: 1.2;
}

.wt-glossary-description {
    font-size: 1.0625rem;
    color: var(--wt-glossary-text-light);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ── Search Bar ───────────────────────────────────────────────── */

.wt-glossary-search-wrapper {
    margin-bottom: 1.25rem;
    text-align: center;
}

.wt-glossary-search-label {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: var(--wt-glossary-primary);
    margin-bottom: 0.75rem;
}

.wt-glossary-search-inner {
    position: relative;
    max-width: 560px;
    margin: 0 auto;
}

.wt-glossary-search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--wt-glossary-text-light);
    pointer-events: none;
}

.wt-glossary-search {
    width: 100%;
    padding: 0.875rem 2.75rem 0.875rem 3rem;
    font-size: 1rem;
    font-family: var(--wt-glossary-font);
    color: var(--wt-glossary-dark);
    background: var(--wt-glossary-bg);
    border: 2px solid var(--wt-glossary-border);
    border-radius: 50px;
    outline: none;
    transition: border-color var(--wt-glossary-transition), box-shadow var(--wt-glossary-transition);
}

.wt-glossary-search:focus {
    border-color: var(--wt-glossary-primary);
    box-shadow: 0 0 0 4px var(--wt-glossary-primary-light);
}

.wt-glossary-search::placeholder {
    color: var(--wt-glossary-text-light);
}

.wt-glossary-search-clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--wt-glossary-text-light);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    line-height: 1;
    border-radius: 50%;
    transition: color var(--wt-glossary-transition), background var(--wt-glossary-transition);
}

.wt-glossary-search-clear:hover {
    color: var(--wt-glossary-dark);
    background: var(--wt-glossary-bg-subtle);
}

/* ── Recently / Top searched ──────────────────────────────────── */

.wt-glossary-recent {
    max-width: 560px;
    margin: 0 auto 2rem;
}

.wt-glossary-recent-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.wt-glossary-recent-label {
    font-size: 18px;
    font-weight: 600;
    color: var(--wt-glossary-text-light);
}

.wt-glossary-recent-list {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.wt-glossary-recent-item {
    display: inline-block;
    border: 1px solid var(--wt-glossary-primary);
    background: var(--wt-glossary-bg);
    color: var(--wt-glossary-primary);
    border-radius: 50px;
    padding: 0.375rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--wt-glossary-transition), color var(--wt-glossary-transition);
}

.wt-glossary-recent-item:hover {
    background: var(--wt-glossary-primary);
    color: #fff;
}

.wt-glossary-recent-item-title {
    display: inline;
}

.wt-glossary-recent-item-desc {
    display: none;
}

/* ── A–Z Navigation ───────────────────────────────────────────── */

.webthinker-glossary-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    justify-content: center;
    margin-bottom: 2.5rem;
    padding: 1rem;
}

.wt-glossary-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 3.25rem;
    height: 3.25rem;
    padding: 0.25rem 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--wt-glossary-text);
    background: var(--wt-glossary-bg);
    border: 1px solid var(--wt-glossary-border);
    border-radius: var(--wt-glossary-radius-sm);
    cursor: pointer;
    transition: all var(--wt-glossary-transition);
    text-decoration: none;
}

.wt-glossary-nav-btn:hover:not(:disabled) {
    color: var(--wt-glossary-primary);
    border-color: var(--wt-glossary-primary);
    background: var(--wt-glossary-primary-light);
    transform: translateY(-1px);
}

.wt-glossary-nav-btn-active {
    color: #fff !important;
    background: var(--wt-glossary-primary) !important;
    border-color: var(--wt-glossary-primary) !important;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.wt-glossary-nav-btn-disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* ── Letter Headings ──────────────────────────────────────────── */

.wt-glossary-letter-section {
    margin-bottom: 2rem;
    animation: wt-glossary-fade-in 0.35s ease forwards;
}

.wt-glossary-letter-heading {
    font-size: 4rem;
    font-weight: 600;
    color: var(--wt-glossary-primary);
    margin: 0 0 1rem 0;
    padding-bottom: 0.5rem;
    letter-spacing: 0.025em;
}

/* ── Term Cards ───────────────────────────────────────────────── */

.wt-glossary-term-col {
    margin-bottom: 1.5rem;
}

.wt-glossary-term-card {
    background: var(--wt-glossary-bg);
    border: 1px solid var(--wt-glossary-border);
    border-radius: var(--wt-glossary-radius);
    padding: 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--wt-glossary-card-shadow);
    transition: transform var(--wt-glossary-transition), box-shadow var(--wt-glossary-transition);
    position: relative;
    overflow: hidden;
}

.wt-glossary-term-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
   background: var(--wt-glossary-primary);
    opacity: 0;
    transition: opacity var(--wt-glossary-transition);
}

.wt-glossary-term-card:hover::before {
    opacity: 1;
}

.wt-glossary-term-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    line-height: 1.3;
}

.wt-glossary-term-title a {
    color: var(--wt-glossary-dark);
    text-decoration: none;
    transition: color var(--wt-glossary-transition);
}

.wt-glossary-term-title a:hover {
    color: var(--wt-glossary-primary);
}

.wt-glossary-term-excerpt {
    font-size: 0.9375rem;
    color: var(--wt-glossary-text-light);
    margin: 0 0 1rem 0;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.wt-glossary-read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--wt-glossary-primary);
    text-decoration: none;
    transition: gap var(--wt-glossary-transition), color var(--wt-glossary-transition);
    margin-top: auto;
}

.wt-glossary-read-more:hover {
    gap: 0.625rem;
    color: var(--wt-glossary-primary-hover);
}

.wt-glossary-read-more svg {
    transition: transform var(--wt-glossary-transition);
}

.wt-glossary-read-more:hover svg {
    transform: translateX(2px);
}

/* ── No Results ───────────────────────────────────────────────── */

.wt-glossary-no-results {
    text-align: center;
    padding: 3rem 1rem;
    font-size: 1.125rem;
    color: var(--wt-glossary-text-light);
    background: var(--wt-glossary-bg-subtle);
    border-radius: var(--wt-glossary-radius);
    border: 1px dashed var(--wt-glossary-border);
}

/* ── Loading Spinner ──────────────────────────────────────────── */

.wt-glossary-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    color: var(--wt-glossary-text-light);
    font-size: 0.9375rem;
}

.wt-glossary-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--wt-glossary-border);
    border-top-color: var(--wt-glossary-primary);
    border-radius: 50%;
    animation: wt-glossary-spin 0.7s linear infinite;
}

@keyframes wt-glossary-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes wt-glossary-fade-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Tooltip for auto-linked terms ────────────────────────────── */

.wt-glossary-tooltip-link {
    color: var(--wt-glossary-primary);
    text-decoration: none;
    border-bottom: 1px dashed var(--wt-glossary-primary);
    position: relative;
    cursor: pointer;
    transition: color var(--wt-glossary-transition);
}

.wt-glossary-tooltip-link:hover {
    color: var(--wt-glossary-primary-hover);
}

.wt-glossary-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--wt-glossary-dark);
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: var(--wt-glossary-radius-sm);
    font-size: 0.8125rem;
    line-height: 1.5;
    max-width: 280px;
    min-width: 180px;
    white-space: normal;
    z-index: 9999;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(-50%) translateY(4px);
}

.wt-glossary-tooltip.wt-glossary-tooltip-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.wt-glossary-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--wt-glossary-dark);
}

/* ── Single Term Detail Page ──────────────────────────────────── */

.wt-glossary-single-wrapper {
    font-family: var(--wt-glossary-font);
    color: var(--wt-glossary-text);
    line-height: 1.7;
    padding: 2rem 0 4rem;
}

.wt-glossary-breadcrumb {
    font-size: 0.875rem;
    color: var(--wt-glossary-text-light);
    margin-bottom: 2rem;
}

.wt-glossary-breadcrumb a {
    color: var(--wt-glossary-primary);
    text-decoration: none;
}

.wt-glossary-breadcrumb a:hover {
    text-decoration: underline;
}

.wt-glossary-breadcrumb-sep {
    margin: 0 0.5rem;
    color: var(--wt-glossary-border);
}

.wt-glossary-single-header {
    margin-bottom: 2rem;
}

.wt-glossary-single-letter-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    background: var(--wt-glossary-primary);
    border-radius: var(--wt-glossary-radius-sm);
    margin-bottom: 1rem;
}

.wt-glossary-single-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--wt-glossary-dark);
    margin: 0 0 0.75rem 0;
    line-height: 1.2;
}

.wt-glossary-single-short-desc {
    font-size: 1.125rem;
    color: var(--wt-glossary-text-light);
    margin: 0 0 1rem 0;
    padding-left: 1rem;
    border-left: 3px solid var(--wt-glossary-primary);
}

.wt-glossary-single-synonyms {
    font-size: 0.9375rem;
    color: var(--wt-glossary-text-light);
    margin-bottom: 1rem;
}

.wt-glossary-single-synonyms strong {
    color: var(--wt-glossary-text);
    margin-right: 0.375rem;
}

.wt-glossary-single-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.wt-glossary-category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--wt-glossary-primary);
    background: var(--wt-glossary-primary-light);
    border-radius: 50px;
}

.wt-glossary-single-image {
    margin-bottom: 2rem;
    border-radius: var(--wt-glossary-radius);
    overflow: hidden;
}

.wt-glossary-featured-img {
    width: 100%;
    height: auto;
    display: block;
}

.wt-glossary-single-content {
    font-size: 1rem;
    margin-bottom: 2.5rem;
}

.wt-glossary-single-content h2,
.wt-glossary-single-content h3,
.wt-glossary-single-content h4 {
    color: var(--wt-glossary-dark);
    margin-top: 1.5rem;
}

.wt-glossary-single-content p {
    margin-bottom: 1rem;
}

.wt-glossary-single-content img,
.wt-glossary-single-content video {
    max-width: 100%;
    height: auto;
    border-radius: var(--wt-glossary-radius-sm);
    margin: 1rem 0;
}

/* Related Terms */
.wt-glossary-related-terms {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--wt-glossary-border);
}

.wt-glossary-related-heading {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--wt-glossary-dark);
    margin: 0 0 1.25rem 0;
}

/* Back link */
.wt-glossary-back-link {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--wt-glossary-border);
}

.wt-glossary-back-link a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--wt-glossary-primary);
    text-decoration: none;
    transition: gap var(--wt-glossary-transition);
}

.wt-glossary-back-link a:hover {
    gap: 0.75rem;
}

/* ── Responsive ───────────────────────────────────────────────── */

@media (max-width: 767px) {
    .wt-glossary-wrapper {
        padding: 1rem 0;
    }

    .wt-glossary-title {
        font-size: 1.75rem;
    }

    .webthinker-glossary-nav {
        gap: 0.25rem;
        padding: 0.75rem;
    }

    .wt-glossary-nav-btn {
        min-width: 1.875rem;
        height: 1.875rem;
        font-size: 0.75rem;
    }

    .wt-glossary-letter-heading {
        font-size: 1.5rem;
    }

    .wt-glossary-single-title {
        font-size: 1.75rem;
    }

    .wt-glossary-term-card {
        padding: 1.125rem;
    }
}