/**
 * Glossary Styles — Inline term highlights, tooltip, and glossary page.
 *
 * Follows BEM naming, uses tokens from tokens.css.
 * Loaded on pages that use glossary annotations and on the glossary page itself.
 *
 * @version 1.0
 * @see docs/conventions/ENGINEERING_CONVENTIONS.md §10
 */


/* ═══════════════════════════════════════════════
   1. INLINE TERM ANNOTATIONS
   ═══════════════════════════════════════════════ */

.glossary-term {
    border-bottom: 1px dashed var(--color-primary);
    cursor: help;
    position: relative;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.glossary-term:hover,
.glossary-term:focus-visible {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary-hover);
}


/* ═══════════════════════════════════════════════
   1b. GLOSSARY LINKS (standalone, no-module)
   ═══════════════════════════════════════════════ */

.glossary-link {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dashed rgba(129, 140, 248, 0.5);
    transition: border-color 0.2s ease, color 0.2s ease;
}
.glossary-link:hover {
    color: #818cf8;
    border-bottom-color: #818cf8;
}


/* ═══════════════════════════════════════════════
   2. TOOLTIP
   ═══════════════════════════════════════════════ */

.glossary-tooltip {
    position: fixed;
    z-index: 1000;
    max-width: 360px;
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--color-text);
    opacity: 0;
    pointer-events: none;
    transform: translateY(4px);
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.glossary-tooltip--visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.glossary-tooltip__term {
    font-weight: 700;
    font-size: var(--font-size-base);
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.glossary-tooltip__english {
    font-weight: 400;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-left: var(--space-xs);
}

.glossary-tooltip__short {
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.glossary-tooltip__more {
    display: inline-block;
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    text-decoration: none;
    cursor: pointer;
}

.glossary-tooltip__more:hover {
    text-decoration: underline;
}

.glossary-tooltip__category {
    display: inline-block;
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: 99px;
    background: var(--color-bg);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    float: right;
}


/* ═══════════════════════════════════════════════
   2b. INLINE GLOSSARY LINKS (no-navigate)
   ═══════════════════════════════════════════════ */

.glossary-link-inline {
    cursor: pointer;
    border-bottom: 1px dashed rgba(129, 140, 248, 0.5);
    transition: border-color 0.2s ease, color 0.2s ease;
}
.glossary-link-inline:hover {
    color: #818cf8;
    border-bottom-color: #818cf8;
}


/* ═══════════════════════════════════════════════
   2c. DETAIL POPUP OVERLAY
   ═══════════════════════════════════════════════ */

.glossary-detail-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.glossary-detail-overlay--visible {
    opacity: 1;
    pointer-events: auto;
}

.glossary-detail {
    position: relative;
    max-width: 480px;
    width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    color: var(--color-text);
    transform: translateY(12px);
    transition: transform 0.2s ease;
}

.glossary-detail-overlay--visible .glossary-detail {
    transform: translateY(0);
}

.glossary-detail__close {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 4px 8px;
}
.glossary-detail__close:hover {
    color: var(--color-text);
}

.glossary-detail__term {
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.glossary-detail__english {
    font-weight: 400;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-left: var(--space-xs);
}

.glossary-detail__category {
    display: inline-block;
    font-size: var(--font-size-xs);
    padding: 2px 10px;
    border-radius: 99px;
    background: var(--color-bg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.glossary-detail__short {
    font-size: var(--font-size-base);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.glossary-detail__long {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.glossary-detail__link {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    text-decoration: none;
}
.glossary-detail__link:hover {
    text-decoration: underline;
}


/* ═══════════════════════════════════════════════
   3. GLOSSARY PAGE — DARK THEME (AIverse)
   Applied on html/glossary.html via .landing-page
   ═══════════════════════════════════════════════ */

.glossary-page {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}


/* ── Search & Filters ────────────── */

.glossary-search {
    position: relative;
    margin-bottom: var(--space-lg);
}

.glossary-search__input {
    width: 100%;
    padding: var(--space-sm) var(--space-md) var(--space-sm) 2.5rem;
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius-lg);
    color: var(--landing-text-color, #e0e0e0);
    outline: none;
    transition: border-color 0.2s ease;
}

.glossary-search__input::placeholder {
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.55));
}

.glossary-search__input:focus {
    border-color: var(--color-primary);
}

.glossary-search__icon {
    position: absolute;
    left: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.55));
    font-size: 1.2rem;
    pointer-events: none;
}

.glossary-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-xl);
}

.glossary-filter {
    padding: 4px 12px;
    font-size: var(--font-size-xs);
    font-family: var(--font-family);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 99px;
    background: transparent;
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.6));
    cursor: pointer;
    transition: all 0.2s ease;
}

.glossary-filter:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.glossary-filter--active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}


/* ── Card List ─────────────────── */

.glossary-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.glossary-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-lg);
    padding: var(--space-md) var(--space-lg);
    transition: border-color 0.2s ease, background 0.2s ease;
}

.glossary-card:hover {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.06);
}

.glossary-card__header {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.glossary-card__term {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--landing-text-color, #e0e0e0);
    margin: 0;
}

.glossary-card__english {
    font-size: var(--font-size-sm);
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.4));
}

.glossary-card__difficulty {
    margin-left: auto;
    display: flex;
    gap: 3px;
}

.glossary-card__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
}

.glossary-card__dot--filled {
    background: var(--color-primary);
}

.glossary-card__category {
    display: inline-block;
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: 99px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.5));
    margin-bottom: var(--space-sm);
}

.glossary-card__short {
    font-size: var(--font-size-base);
    color: var(--landing-text-color, #e0e0e0);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.glossary-card__long {
    font-size: var(--font-size-sm);
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.6));
    line-height: 1.6;
    margin-bottom: var(--space-sm);
    display: none;
}

.glossary-card--expanded .glossary-card__long {
    display: block;
}

.glossary-card__toggle {
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--font-family);
}

.glossary-card__toggle:hover {
    text-decoration: underline;
}

.glossary-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.glossary-card__tag {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.5));
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s ease;
}

.glossary-card__tag:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-primary);
}

.glossary-card__link {
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    text-decoration: none;
}

.glossary-card__link:hover {
    text-decoration: underline;
}

.glossary-empty {
    text-align: center;
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.4));
    padding: var(--space-2xl) 0;
    font-size: var(--font-size-base);
}

.glossary-count {
    font-size: var(--font-size-sm);
    color: var(--landing-text-muted, rgba(255, 255, 255, 0.4));
    margin-bottom: var(--space-md);
    text-align: right;
}


/* ═══════════════════════════════════════════════
   4. RESPONSIVE
   ═══════════════════════════════════════════════ */

@media (max-width: 600px) {
    .glossary-tooltip {
        max-width: calc(100vw - 2rem);
        left: 1rem !important;
        right: 1rem !important;
    }

    .glossary-card {
        padding: var(--space-sm) var(--space-md);
    }

    .glossary-card__header {
        flex-wrap: wrap;
    }

    .glossary-card__difficulty {
        margin-left: 0;
    }

    .glossary-filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
}