/* ==========================================================================
   Column Detail Page Styles
   Extends case-detail.css for column-specific elements
   ========================================================================== */

/* Loading State */
.column-detail-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: 1rem;
    color: var(--secondary-dark-gray);
}

.column-detail-loading__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--secondary-medium-gray);
    border-top-color: var(--primary-blue-accent);
    border-radius: 50%;
    animation: column-spin 0.8s linear infinite;
}

@keyframes column-spin {
    to { transform: rotate(360deg); }
}

.column-detail-loading p {
    font-size: 1rem;
}

/* Error State */
.column-detail-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: 1rem;
    text-align: center;
    padding: 2rem;
}

.column-detail-error i {
    font-size: 3rem;
    color: var(--secondary-medium-gray);
}

.column-detail-error p {
    font-size: 1.125rem;
    color: var(--secondary-dark-gray);
}

/* Tags in Hero */
.column-detail__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.column-detail__tag {
    display: inline-block;
    background: rgba(59, 130, 246, 0.3);
    color: var(--white);
    font-size: var(--smaller-font-size);
    font-weight: var(--font-medium);
    padding: 0.375rem 1rem;
    border-radius: 20px;
}

/* Thumbnail Image */
.column-detail__thumbnail {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.column-detail__thumbnail img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    display: block;
    margin-top: calc(-1 * var(--spacing-xl));
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-md);
}

/* Article body reading optimization */
.article-body .article {
    font-size: 1.0625rem;
    line-height: 1.8;
}

/* Override article text for column readability */
.column-detail__thumbnail + .article-body .article__text,
.article-body .article p {
    line-height: 1.8;
}

/* Back to List Link */
.column-detail__back {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-xxl);
    border-top: 1px solid var(--secondary-medium-gray);
}

.column-detail__back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    font-weight: var(--font-medium);
    color: var(--primary-blue-accent);
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    transition: background 0.2s, color 0.2s;
}

.column-detail__back-link:hover {
    background: var(--secondary-light-gray);
    color: var(--primary-deep-navy);
}

.column-detail__back-link i {
    font-size: 0.875rem;
    transition: transform 0.2s;
}

.column-detail__back-link:hover i {
    transform: translateX(-3px);
}

/* Responsive */
@media screen and (max-width: 768px) {
    .column-detail__thumbnail img {
        border-radius: var(--radius-md);
        margin-top: calc(-0.5 * var(--spacing-xl));
    }

    .column-detail__back {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-xl);
    }
}

@media screen and (max-width: 480px) {
    .column-detail__thumbnail img {
        margin-top: 0;
        border-radius: 0;
    }

    .column-detail__thumbnail {
        padding: 0;
    }
}