/* ============================================ */
/* Glossary page — section-scoped styles        */
/* ============================================ */
/* Library catalog idiom: alphabetical sections, */
/* sticky A-Z + category filter, definition-list */
/* layout, hairline-only separation. Brand tokens*/
/* from src/input.css.                          */
/* ============================================ */

/* ============================================ */
/* Hero                                         */
/* ============================================ */

.gl-hero {
    background: #ffffff;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.gl-hero-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 120px 40px 64px;
    text-align: center;
}

.gl-hero-eyebrow {
    font-family: var(--v-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--v-ink-3);
    margin: 0 0 32px;
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.gl-hero-eyebrow::before {
    content: '';
    width: 22px;
    height: 1px;
    background: var(--v-amber);
}

.gl-hero-headline {
    font-family: var(--v-display);
    font-size: clamp(56px, 9vw, 128px);
    line-height: 0.92;
    letter-spacing: -0.035em;
    font-weight: 900;
    color: var(--v-ink);
    margin: 0 auto 32px;
    max-width: 14ch;
}

.gl-hero-headline .gl-period {
    color: var(--v-amber);
}

.gl-hero-subline {
    font-family: var(--v-sans);
    font-size: clamp(17px, 1.5vw, 20px);
    line-height: 1.55;
    color: var(--v-ink-2);
    max-width: 64ch;
    margin: 0 auto 56px;
    font-weight: 400;
}

.gl-hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding-top: 40px;
    border-top: 1px solid var(--v-line);
}

.gl-stat-num {
    font-family: var(--v-display);
    font-weight: 800;
    font-size: clamp(40px, 5vw, 64px);
    line-height: 1;
    color: var(--v-ink);
    letter-spacing: -0.02em;
}

.gl-stat-label {
    margin-top: 10px;
    font-family: var(--v-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--v-ink-3);
}

@media (max-width: 720px) {
    .gl-hero-inner { padding: 88px 22px 48px; }
    .gl-hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

/* ============================================ */
/* Sticky control bar — category + A-Z          */
/* ============================================ */

.gl-controls {
    background: rgba(255, 255, 255, 0.92);
    position: sticky;
    top: 0;
    z-index: 30;
    border-top: 1px solid var(--v-line);
    border-bottom: 1px solid var(--v-line);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.gl-controls-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 14px 40px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gl-controls-row {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.gl-controls-label {
    font-family: var(--v-mono);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--v-ink-3);
    flex-shrink: 0;
}

/* Category chips */
.gl-cat-chips {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.gl-cat-chip {
    appearance: none;
    border: 1px solid var(--v-line);
    background: #ffffff;
    color: var(--v-ink-2);
    font-family: var(--v-mono);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 5px 12px 6px;
    border-radius: 999px;
    cursor: pointer;
    transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
    white-space: nowrap;
}

.gl-cat-chip:hover { color: var(--v-ink); border-color: var(--v-ink-3); }

.gl-cat-chip.is-active {
    background: var(--v-ink);
    color: #ffffff;
    border-color: var(--v-ink);
}

/* A-Z jump row */
.gl-az {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 2px;
    align-items: center;
}

.gl-az a {
    font-family: var(--v-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--v-ink-2);
    text-decoration: none;
    padding: 4px 7px;
    border-radius: 4px;
    transition: background 120ms ease, color 120ms ease;
    min-width: 22px;
    text-align: center;
}

.gl-az a:hover { background: var(--v-amber-soft); color: var(--v-ink); }

.gl-az a.is-empty {
    color: var(--v-line);
    pointer-events: none;
}

@media (max-width: 720px) {
    .gl-controls-inner { padding: 12px 18px; }
    .gl-controls-label { display: none; }
}

/* ============================================ */
/* Letter sections                              */
/* ============================================ */

.gl-section {
    background: #ffffff;
    padding: 80px 40px 24px;
    scroll-margin-top: 110px;
}

.gl-section + .gl-section { padding-top: 56px; }

.gl-section:last-of-type { padding-bottom: 80px; }

.gl-section-inner {
    max-width: 1240px;
    margin: 0 auto;
}

.gl-letter-head {
    display: grid;
    grid-template-columns: minmax(110px, 14%) 1fr;
    gap: 40px;
    align-items: end;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--v-ink);
    margin-bottom: 16px;
}

.gl-letter {
    font-family: var(--v-display);
    font-size: clamp(56px, 8vw, 96px);
    line-height: 0.9;
    font-weight: 900;
    color: var(--v-amber);
    letter-spacing: -0.04em;
}

.gl-letter-meta {
    padding-bottom: 10px;
    font-family: var(--v-mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--v-ink-3);
}

@media (max-width: 720px) {
    .gl-section { padding: 64px 22px 18px; }
    .gl-letter-head {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    .gl-letter { font-size: 56px; }
    .gl-letter-meta { padding-bottom: 0; }
}

/* ============================================ */
/* Entry — definition-list pattern              */
/* ============================================ */

.gl-entries {
    list-style: none;
    padding: 0;
    margin: 0;
}

.gl-entry {
    display: grid;
    grid-template-columns: minmax(220px, 28%) 1fr;
    gap: 40px;
    align-items: start;
    padding: 28px 0 28px;
    border-bottom: 1px solid var(--v-line);
    transition: background 140ms ease;
    scroll-margin-top: 120px;
}

.gl-entry:hover { background: rgba(255, 163, 23, 0.04); }

.gl-entry-head {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 2px;
}

.gl-entry-term {
    font-family: var(--v-display);
    font-size: clamp(22px, 2.2vw, 28px);
    line-height: 1.1;
    letter-spacing: -0.015em;
    font-weight: 800;
    color: var(--v-ink);
    margin: 0;
}

.gl-entry-full {
    font-family: var(--v-mono);
    font-size: 12px;
    line-height: 1.45;
    color: var(--v-ink-3);
    letter-spacing: 0.02em;
    margin: 0;
}

.gl-entry-cat {
    display: inline-block;
    font-family: var(--v-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--v-amber-deep);
    margin-top: 4px;
    align-self: flex-start;
}

.gl-entry-body { min-width: 0; }

.gl-entry-def {
    font-family: var(--v-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--v-ink-2);
    margin: 0 0 14px;
    max-width: 72ch;
    font-weight: 400;
}

.gl-entry-see {
    font-family: var(--v-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--v-ink-3);
    margin: 0;
}

.gl-entry-see-label {
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-right: 6px;
}

.gl-entry-see a {
    color: var(--v-ink-2);
    text-decoration: none;
    border-bottom: 1px solid var(--v-line);
    transition: color 120ms ease, border-color 120ms ease;
}

.gl-entry-see a:hover {
    color: var(--v-amber-deep);
    border-bottom-color: var(--v-amber);
}

@media (max-width: 820px) {
    .gl-entry {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 22px 0;
    }
    .gl-entry-term { font-size: 22px; }
}

/* ============================================ */
/* Empty-state when filter matches nothing      */
/* ============================================ */

[data-cat-hidden="true"] { display: none !important; }

.gl-section[data-empty="true"] { display: none; }

.gl-empty {
    display: none;
    padding: 80px 40px 120px;
    text-align: center;
    font-family: var(--v-sans);
    font-size: 16px;
    color: var(--v-ink-3);
    background: #ffffff;
}

.gl-empty.is-shown { display: block; }

.gl-empty strong {
    display: block;
    font-family: var(--v-display);
    font-weight: 800;
    font-size: 28px;
    color: var(--v-ink);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

/* ============================================ */
/* Cross-reference footer (to /research) + CTA  */
/* ============================================ */

.gl-method {
    background: var(--v-bg-dark);
    color: #ffffff;
    padding: 96px 40px;
}

.gl-method-inner {
    max-width: 1240px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(200px, 26%) 1fr;
    gap: 56px;
    align-items: start;
}

.gl-method-eyebrow {
    font-family: var(--v-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--v-amber);
    margin-bottom: 18px;
}

.gl-method-headline {
    font-family: var(--v-display);
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: #ffffff;
    margin: 0;
}

.gl-method-body {
    font-family: var(--v-sans);
    font-size: 16px;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.72);
    margin: 0;
    max-width: 62ch;
}

.gl-method-body p + p { margin-top: 18px; }

.gl-method-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 28px;
    padding: 14px 24px;
    background: transparent;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.32);
    font-family: var(--v-sans);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.02em;
    text-decoration: none;
    border-radius: 999px;
    transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.gl-method-link:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-1px);
}

.gl-method-link svg { transition: transform 140ms ease; }
.gl-method-link:hover svg { transform: translateX(3px); }

@media (max-width: 820px) {
    .gl-method { padding: 72px 22px; }
    .gl-method-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

.gl-cta {
    background: var(--v-amber);
    padding: 80px 40px;
}

.gl-cta-inner {
    max-width: 1240px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: center;
}

.gl-cta-eyebrow {
    font-family: var(--v-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(14, 17, 22, 0.6);
    margin-bottom: 14px;
}

.gl-cta-headline {
    font-family: var(--v-display);
    font-size: clamp(28px, 3.4vw, 44px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--v-ink);
    margin: 0;
    max-width: 24ch;
}

.gl-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: var(--v-ink);
    color: #ffffff;
    font-family: var(--v-sans);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.02em;
    text-decoration: none;
    border-radius: 999px;
    transition: transform 140ms ease, background 140ms ease;
}

.gl-cta-btn:hover {
    background: #000;
    transform: translateY(-1px);
}

.gl-cta-btn svg { transition: transform 140ms ease; }
.gl-cta-btn:hover svg { transform: translateX(3px); }

@media (max-width: 820px) {
    .gl-cta { padding: 64px 22px; }
    .gl-cta-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}