/**
 * Partner Glossary index (/partner-glossary) — layout aligned with ui-design/tag-glossary-index.html.
 * Scoped under .page-glossary-index; uses design tokens from variables.css.
 */
.page-glossary-index {
    background: var(--bg-base);
    --glossary-filter-duration: 0.32s;
    --glossary-filter-ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

@media (prefers-reduced-motion: reduce) {
    .page-glossary-index {
        --glossary-filter-duration: 0.01ms;
    }
}

/* —— Dark hero + search —— */
.page-glossary-index .glossary-index__hero {
    background: var(--text-primary);
    color: var(--text-inverse);
    padding-block: clamp(3.5rem, 8vw, 5rem) clamp(4rem, 9vw, 5.625rem);
    border-bottom: 1px solid color-mix(in srgb, var(--text-inverse) 12%, transparent);
}

.page-glossary-index .glossary-index__hero-inner {
    text-align: center;
}

.page-glossary-index .glossary-index__breadcrumb {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted-on-dark);
    margin: 0 auto 1.25rem;
    max-width: 50rem;
    text-align: center;
    line-height: 1.5;
}

.page-glossary-index .glossary-index__bc-sep {
    margin-inline: 0.35rem;
    opacity: 0.75;
}

.page-glossary-index .glossary-index__bc-link {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-speed);
}

.page-glossary-index .glossary-index__bc-link:hover {
    color: var(--text-inverse);
    text-decoration: underline;
}

.page-glossary-index .glossary-index__bc-current {
    color: var(--text-inverse);
    font-weight: 600;
}

.page-glossary-index #glossary-index-heading.glossary-index__title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-block: clamp(1.25rem, 3.5vw, 2.25rem) clamp(2rem, 5vw, 3rem);
    line-height: 1.1;
    color: var(--text-inverse);
}

.page-glossary-index .glossary-index__search {
    position: relative;
    max-width: 40.625rem;
    margin-inline: auto;
}

.page-glossary-index .glossary-index__search-input {
    width: 100%;
    padding: 1.25rem 1.5rem;
    padding-right: 4.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--text-inverse) 22%, transparent);
    background: color-mix(in srgb, var(--bg-dark) 55%, var(--text-primary));
    color: var(--bg-subtle);
    font-size: 1.05rem;
    outline: none;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed),
        background var(--transition-speed);
    box-shadow: var(--shadow-md);
}

.page-glossary-index .glossary-index__search-input::placeholder {
    color: var(--text-muted-on-dark);
}

.page-glossary-index .glossary-index__search-input:focus {
    border-color: color-mix(in srgb, var(--accent-blue) 70%, var(--text-inverse));
    background: var(--bg-dark);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-blue) 22%, transparent);
}

.page-glossary-index .glossary-index__search-btn {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent-blue);
    border: none;
    width: 2.625rem;
    height: 2.625rem;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-speed);
}

.page-glossary-index .glossary-index__search-btn:hover {
    background: var(--accent-hover);
}

/* Parent-topic pills (hero, below search) */
.page-glossary-index .glossary-index__hero .glossary-index__category-row--hero {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    justify-content: center;
    margin-top: clamp(1.5rem, 4vw, 2.25rem);
    max-width: 56rem;
    margin-inline: auto;
}

.page-glossary-index .glossary-index__hero .glossary-index__filter-pill {
    padding: 0.625rem 1.25rem;
    border-radius: 6.25rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background var(--transition-speed), color var(--transition-speed),
        border-color var(--transition-speed);
    border: 1px solid color-mix(in srgb, var(--text-inverse) 22%, transparent);
    background: color-mix(in srgb, var(--bg-dark) 55%, var(--text-primary));
    color: var(--text-muted-on-dark);
}

.page-glossary-index .glossary-index__hero .glossary-index__filter-pill:hover {
    border-color: color-mix(in srgb, var(--text-inverse) 38%, transparent);
    background: var(--bg-dark);
    color: var(--text-inverse);
}

.page-glossary-index .glossary-index__hero .glossary-index__filter-pill.is-active {
    background: var(--accent-blue);
    color: var(--text-inverse);
    border-color: var(--accent-blue);
}

/* —— Filters strip —— */
.page-glossary-index .glossary-index__filters {
    padding-block: clamp(2rem, 4vw, 2.5rem);
    background: var(--bg-body);
    background-image: radial-gradient(
            circle at 10% 50%,
            color-mix(in srgb, var(--accent-blue) 8%, transparent) 0%,
            transparent 50%
        ),
        radial-gradient(
            circle at 90% 20%,
            color-mix(in srgb, var(--status-success) 8%, transparent) 0%,
            transparent 50%
        );
    border-block: 1px solid var(--border-light);
}

.page-glossary-index .glossary-index__filter-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.page-glossary-index .glossary-index__category-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    justify-content: center;
}

.page-glossary-index .glossary-index__filter-pill {
    padding: 0.625rem 1.25rem;
    border-radius: 6.25rem;
    border: 1px solid var(--border-light);
    background: var(--bg-base);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background var(--transition-speed), color var(--transition-speed),
        border-color var(--transition-speed);
}

.page-glossary-index .glossary-index__filter-pill:hover {
    border-color: var(--border-hover);
    background: var(--bg-subtle);
    color: var(--text-primary);
}

.page-glossary-index .glossary-index__filter-pill.is-active {
    background: var(--text-primary);
    color: var(--text-inverse);
    border-color: var(--text-primary);
}

.page-glossary-index .glossary-index__alpha-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    justify-content: center;
    padding-top: 0;
    border-top: none;
}

@media (min-width: 992px) {
    .page-glossary-index .glossary-index__filters .glossary-index__alpha-row {
        display: grid;
        grid-template-columns: repeat(14, minmax(2.375rem, auto));
        justify-content: center;
        justify-items: center;
        column-gap: 0.375rem;
        row-gap: 0.5rem;
        width: max-content;
        max-width: 100%;
        margin-inline: auto;
    }
}

.page-glossary-index .glossary-index__alpha-btn {
    min-width: 2.375rem;
    height: 2.375rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background var(--transition-speed), color var(--transition-speed),
        border-color var(--transition-speed);
}

.page-glossary-index .glossary-index__alpha-btn:hover:not(:disabled) {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.page-glossary-index .glossary-index__alpha-btn.is-active {
    background: var(--mc-blue-bg);
    color: var(--mc-blue-text);
    border-color: var(--mc-blue-border);
}

.page-glossary-index .glossary-index__alpha-btn:disabled {
    opacity: 0.32;
    cursor: not-allowed;
}

/* Start of term list (smooth scroll target from category pills) */
.page-glossary-index .glossary-index__terms {
    scroll-margin-top: clamp(4.5rem, 12vw, 6.5rem);
}

/* —— Term grid —— */
.page-glossary-index .glossary-index__terms {
    padding-block: clamp(2.5rem, 5vw, 4rem) clamp(4rem, 8vw, 6.25rem);
    background: var(--bg-base);
}

.page-glossary-index .glossary-index__letter-group {
    margin-bottom: clamp(2.5rem, 5vw, 3.75rem);
    opacity: 1;
    transform: translateY(0);
    transition:
        opacity var(--glossary-filter-duration) var(--glossary-filter-ease),
        transform var(--glossary-filter-duration) var(--glossary-filter-ease);
}

.page-glossary-index .glossary-index__letter-group[hidden] {
    display: none !important;
}

.page-glossary-index .glossary-index__letter-group--filter-leave {
    opacity: 0;
    transform: translateY(-0.25rem);
    pointer-events: none;
}

.page-glossary-index .glossary-index__letter-heading {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--bg-surface);
    margin: 0 0 1.5rem;
    border-bottom: 2px solid var(--bg-body);
    padding-bottom: 0.625rem;
    line-height: 1;
}

.page-glossary-index .glossary-index__term-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 21.25rem), 1fr));
    gap: 1.5rem;
}

.page-glossary-index .glossary-index__term-card-cover {
    margin: -1.5rem -1.5rem 1.25rem;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-bottom: 1px solid var(--border-light);
}

.page-glossary-index .glossary-index__term-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-glossary-index .glossary-index__term-card {
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition:
        opacity var(--glossary-filter-duration) var(--glossary-filter-ease),
        transform var(--glossary-filter-duration) var(--glossary-filter-ease),
        border-color var(--transition-speed) ease,
        box-shadow var(--transition-speed) ease;
    text-decoration: none;
    height: 100%;
    color: inherit;
    opacity: 1;
    transform: translateY(0) scale(1);
}

.page-glossary-index .glossary-index__term-card:hover:not(
        .glossary-index__term-card--filter-leave
    ):not(.glossary-index__term-card--filter-enter-start) {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.page-glossary-index .glossary-index__term-card[hidden] {
    display: none !important;
}

.page-glossary-index .glossary-index__term-card--filter-enter-start {
    opacity: 0;
    transform: translateY(0.5rem) scale(0.99);
    pointer-events: none;
}

.page-glossary-index .glossary-index__term-card--filter-leave {
    opacity: 0;
    transform: translateY(-0.35rem) scale(0.985);
    pointer-events: none;
}

.page-glossary-index .glossary-index__term-tag-wrap {
    display: block;
    width: 100%;
    margin-bottom: 0.75rem;
    text-align: start;
}

.page-glossary-index .glossary-index__term-card-head {
    margin-bottom: 0.9375rem;
}

.page-glossary-index .glossary-index__term-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
    max-width: 100%;
}

.page-glossary-index .glossary-index__term-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.3125rem 0.75rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    max-width: 100%;
}

.page-glossary-index .glossary-index__term-tag--blue {
    background: var(--mc-blue-bg);
    color: var(--mc-blue-text);
}

.page-glossary-index .glossary-index__term-tag--purple {
    background: var(--mc-purple-bg);
    color: var(--mc-purple-text);
}

.page-glossary-index .glossary-index__term-tag--teal {
    background: var(--mc-teal-bg);
    color: var(--mc-teal-text);
}

.page-glossary-index .glossary-index__term-tag--orange {
    background: var(--mc-orange-bg);
    color: var(--mc-orange-text);
}

.page-glossary-index .glossary-index__term-tag--rose {
    background: var(--mc-rose-bg);
    color: var(--mc-rose-text);
}

.page-glossary-index .glossary-index__term-tag--dark {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.page-glossary-index .glossary-index__term-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0 0 1.5rem;
    flex-grow: 1;
}

.page-glossary-index .glossary-index__term-card-foot {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: auto;
    border-top: 1px solid var(--bg-body);
    padding-top: 0.9375rem;
}

.page-glossary-index .glossary-index__term-card-foot svg {
    transition: transform var(--transition-speed);
}

.page-glossary-index .glossary-index__term-card:hover .glossary-index__term-card-foot svg {
    transform: translateX(4px);
}

.page-glossary-index .glossary-index__empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.page-glossary-index .glossary-index__empty[hidden] {
    display: none !important;
}

.page-glossary-index .glossary-index__empty-hint {
    margin-top: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-tertiary);
}

@media (max-width: 48rem) {
    .page-glossary-index .glossary-index__alpha-btn {
        min-width: 2rem;
        height: 2rem;
        font-size: 0.9rem;
    }
}