/* Unified Card Component
   Usage: {% include card.html topic=topic %}
   Variants: .card--frame, .card--benefit, .card--numbered
   Accent: --card-accent custom property via data-topic-id
*/

/* Card Grid */
.card-grid {
    display: grid;
    gap: 24px;
}

.card-grid--frames {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card-grid--benefits {
    grid-template-columns: repeat(2, 1fr);
}

.card-grid--steps {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Base Card */
.card {
    padding: 0;
    border-radius: var(--radius-xl);
    box-shadow: var(--box-shadow-light);
    background-color: var(--box-background-light);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

/* Card Image */
.card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

/* Card Content */
.card-content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    font-size: 1.15em;
    margin: 0 0 8px;
    line-height: 1.3;
    color: var(--heading-color-light);
}

.card-content p {
    font-size: 0.95em;
    line-height: 1.6;
    opacity: 0.85;
    margin: 0 0 12px;
    flex: 1;
}

.card-subtitle {
    font-size: 0.85em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
    color: var(--primary-accent);
}

.card-detail {
    font-size: 0.9em;
    font-style: italic;
    opacity: 0.75;
    margin-bottom: 12px;
}

/* Card Links */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    padding: 10px 20px;
    font-size: 0.95em;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    min-height: 44px;
    align-self: flex-start;
    cursor: pointer;
    border: 2px solid var(--cta-primary-border);
    background-color: var(--cta-primary-bg);
    color: var(--cta-primary-text);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.card-link:hover {
    background-color: var(--cta-primary-text);
    color: var(--cta-primary-bg);
    border-color: var(--cta-primary-bg);
}

.card-link--cta {
    background-color: var(--cta-secondary-bg);
    color: var(--cta-secondary-text);
    border: 2px solid var(--cta-secondary-border);
}

.card-link--cta:hover {
    background-color: var(--cta-secondary-text);
    color: var(--cta-secondary-bg);
    border-color: var(--cta-secondary-bg);
}

/* Frame Card Accent Border */
.card--frame {
    border-top: 4px solid var(--card-accent, var(--primary-accent));
}

/* Dark Mode */
.dark-mode .card {
    background-color: var(--box-background-dark);
    box-shadow: var(--box-shadow-dark);
}

.dark-mode .card-content h3 {
    color: var(--heading-color-dark);
}

.dark-mode .card-detail {
    opacity: 0.6;
}

/* Mobile */
@media (max-width: 599px) {
    .card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}