/* The topic directory only; shared cards and test pages are unchanged. */
.pdr-topics-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.pdr-topic-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    border: 1px solid #d6e6dc;
    background: #fff;
    color: #0b491b;
    box-shadow: 0 2px 5px rgb(11 73 27 / 3%);
    transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.pdr-topic-card:hover,
.pdr-topic-card:focus-within {
    border-color: #83ad93;
    box-shadow: 0 8px 24px rgb(11 73 27 / 9%);
    transform: translateY(-2px);
}

.pdr-topic-card__art {
    position: relative;
    isolation: isolate;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: linear-gradient(145deg, #f3faf6, #fff 75%);
}

.pdr-topic-card__art::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: 6%;
    right: -3%;
    width: 78%;
    aspect-ratio: 1;
    border-radius: 50%;
    background: #e5f2e9;
}

.pdr-topic-card__art::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 24%;
    background: linear-gradient(transparent, #fff);
    pointer-events: none;
}

.pdr-topic-card__number {
    position: absolute;
    z-index: 1;
    top: 1rem;
    left: 1.25rem;
    color: #d0e5d8;
    -webkit-text-fill-color: transparent;
    -webkit-text-stroke: 1px #b7d7c3;
    font-size: clamp(3.5rem, 6vw, 5.5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.06em;
}

.pdr-topic-card__art img {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center bottom;
}

.pdr-topic-card__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: .25rem 1.5rem 1.5rem;
}

.pdr-topic-card__title {
    flex: 1;
    margin: 0 0 1.25rem;
    color: #0b491b;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.pdr-topic-card__meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .5rem 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e3ede7;
    color: #60756a;
    font-size: .8125rem;
    line-height: 1.5;
}

.pdr-topic-card__meta > span {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
}

.pdr-topic-card__meta i {
    color: #55866a;
}

.pdr-topic-card__accuracy {
    display: flex;
    align-items: center;
    gap: .875rem;
    margin-top: 1rem;
}

.pdr-topic-card__accuracy strong {
    color: #0b491b;
    font-size: 1.875rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -.035em;
}

.pdr-topic-card__accuracy > span,
.pdr-topic-card__empty {
    color: #60756a;
    font-size: .8125rem;
    line-height: 1.4;
}

.pdr-topic-card__meter {
    height: 4px;
    margin: .75rem 0 1.25rem;
    overflow: hidden;
    border-radius: 4px;
    background: #e6eeea;
}

.pdr-topic-card__meter > span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: #78ac8b;
}

.pdr-topic-card__empty {
    display: flex;
    align-items: center;
    gap: .625rem;
    min-height: 3.75rem;
    margin: 1rem 0 .75rem;
}

.pdr-topic-card__cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    width: 100%;
    min-height: 44px;
    margin-top: auto;
    font-size: .9375rem;
    font-weight: 500;
}

.pdr-topic-card__cta:focus-visible {
    outline: 2px solid #0b491b;
    outline-offset: 3px;
}

@media (max-width: 1199.98px) {
    .pdr-topics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767.98px) {
    .pdr-topics-grid { grid-template-columns: minmax(0, 1fr); gap: 1.25rem; }
    .pdr-topic-card__body { padding: .25rem 1.25rem 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
    .pdr-topic-card { transition: none; }
    .pdr-topic-card:hover, .pdr-topic-card:focus-within { transform: none; }
}