/* =============================================
   AI Glossary Page Styles
   ============================================= */

/* Hero */
.glossary-hero {
    padding: 10rem 0 5rem;
    position: relative;
    text-align: center;
}

.glossary-hero .deco-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(29, 161, 242, 0.08);
    pointer-events: none;
}

.glossary-hero .deco-circle:nth-child(1) { width: 500px; height: 500px; top: -80px; left: -120px; }
.glossary-hero .deco-circle:nth-child(2) { width: 350px; height: 350px; top: 60px; right: -80px; }
.glossary-hero .deco-circle:nth-child(3) { width: 200px; height: 200px; bottom: 0; left: 50%; transform: translateX(-50%); }

.glossary-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.15;
    max-width: 720px;
    margin: 0 auto 1.25rem;
}

.glossary-hero h1 span { color: var(--accent-cyan); }

.glossary-hero .hero-subtitle {
    color: var(--text-secondary);
    font-size: clamp(0.95rem, 1.8vw, 1.1rem);
    max-width: 660px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

/* Search bar */
.glossary-search-wrap {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
}

.glossary-search-wrap i {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    font-size: 1rem;
    pointer-events: none;
}

.glossary-search {
    width: 100%;
    padding: 0.9rem 1.2rem 0.9rem 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.glossary-search:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(29, 161, 242, 0.1);
}

/* Count badge */
.glossary-count {
    text-align: center;
    margin-top: 0.75rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* Alphabet nav */
.glossary-alpha-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.glossary-alpha-nav a {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-dim);
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.glossary-alpha-nav a:hover,
.glossary-alpha-nav a.active {
    background: rgba(29, 161, 242, 0.1);
    border-color: rgba(29, 161, 242, 0.3);
    color: var(--accent-cyan);
}

/* Section letter header */
.glossary-letter {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--accent-cyan);
    margin: 2.5rem 0 1.25rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.glossary-letter:first-of-type { margin-top: 0; }

/* Term cards grid */
.glossary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.glossary-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.glossary-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 100%;
    background: linear-gradient(180deg, var(--accent-cyan), var(--accent-cyan-light));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.3s ease;
}

.glossary-card:hover::before { transform: scaleY(1); }

.glossary-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(29, 161, 242, 0.1);
    border-color: var(--border-hover);
}

.glossary-card h3 {
    font-family: var(--font-heading);
    font-size: 0.97rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.glossary-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.65;
    margin: 0;
}

/* No results */
.glossary-no-results {
    display: none;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-dim);
    font-size: 1rem;
    grid-column: 1 / -1;
}

/* Responsive */
@media (max-width: 1024px) {
    .glossary-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .glossary-hero { padding: 8rem 0 4rem; }
    .glossary-grid { grid-template-columns: 1fr; }
}