/* SPN-036 Part 7: shared articles list/detail layout contract. */
:root {
    --spn-articles-list-width: 1120px;
    --spn-article-content-width: 760px;
    --spn-article-media-width: 640px;
    --spn-article-card-gap: 1.25rem;
    --spn-article-border: #d8e0e8;
    --spn-article-muted: #5f6b78;
}

/* Archive */
.spn-article-list {
    width: 100%;
    max-width: var(--spn-articles-list-width);
    margin: 0 auto;
    padding: clamp(2rem, 5vw, 4rem) 1.25rem;
}

.spn-article-list h1 {
    margin: 0 0 0.5rem;
    color: var(--spn-primary, #1a3a5c);
    font-size: clamp(1.875rem, 3.2vw, 2.5rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.spn-list-meta {
    margin: 0 0 1.5rem;
    color: var(--spn-article-muted);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.spn-article-list ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spn-article-card-gap);
    margin: 0;
    padding: 0;
    list-style: none;
}

.spn-article-card {
    min-width: 0;
    padding: 1.35rem;
    border: 1px solid var(--spn-article-border);
    border-radius: 0.75rem;
    background: #fff;
    box-shadow: 0 2px 8px rgba(15, 35, 55, 0.05);
}

.spn-article-card:last-child { border-bottom: 1px solid var(--spn-article-border); }

.spn-article-card h2 {
    margin: 0 0 0.55rem;
    font-size: clamp(1.125rem, 1.8vw, 1.375rem);
    font-weight: 700;
    line-height: 1.3;
    overflow-wrap: anywhere;
}

.spn-article-card h2 a,
.spn-article-list li.spn-article-card h2 a {
    display: inline;
    padding: 0;
    color: var(--spn-primary, #1a3a5c);
    font-size: inherit;
    text-decoration: none;
}

.spn-article-card h2 a:hover {
    padding-left: 0;
    color: var(--spn-accent, #2979ff);
    text-decoration: underline;
    text-decoration-thickness: 0.09em;
    text-underline-offset: 0.16em;
}

.spn-article-card h2 a:focus-visible,
.spn-pagination a:focus-visible,
.spn-per-page-bar a:focus-visible,
.spn-article-detail a:focus-visible {
    outline: 3px solid var(--spn-accent, #2979ff);
    outline-offset: 3px;
    border-radius: 2px;
}

.spn-article-card .spn-card-date {
    color: var(--spn-article-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.spn-per-page-bar,
.spn-pagination {
    max-width: 100%;
}

.spn-pagination a,
.spn-pagination span {
    min-width: 2.75rem;
    min-height: 2.75rem;
    padding: 0.6rem 0.75rem;
}

/* Detail */
.spn-article-detail {
    width: 100%;
    max-width: var(--spn-article-content-width);
    margin: 0 auto;
    padding: clamp(2rem, 5vw, 4rem) 1.25rem;
}

.spn-article-detail .spn-article-header {
    margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
}

.spn-article-detail .spn-article-header h1 {
    margin: 0;
    color: var(--spn-primary, #1a3a5c);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.14;
    letter-spacing: -0.025em;
    overflow-wrap: anywhere;
}

.spn-article-detail .spn-article-body,
.spn-article-detail .spn-article-body-2 {
    max-width: none;
    color: var(--spn-text, #1a2433);
    font-size: 1.09375rem;
    line-height: 1.72;
}

.spn-article-detail .spn-article-body > .spn-article,
.spn-article-detail .spn-article-body-2 > .spn-article {
    max-width: none;
    margin: 0;
    padding: 0;
}

.spn-article-detail .spn-article-body h2,
.spn-article-detail .spn-article-body-2 h2 {
    margin: 2.5rem 0 0.85rem;
    color: var(--spn-primary, #1a3a5c);
    font-size: clamp(1.375rem, 2.4vw, 1.875rem);
    font-weight: 750;
    line-height: 1.25;
    letter-spacing: -0.012em;
}

.spn-article-detail .spn-article-body p,
.spn-article-detail .spn-article-body-2 p {
    margin: 0 0 1.25em;
}

.spn-article-detail .spn-article-body ul,
.spn-article-detail .spn-article-body ol,
.spn-article-detail .spn-article-body-2 ul,
.spn-article-detail .spn-article-body-2 ol {
    margin: 0.75rem 0 1.35rem;
    padding-left: 1.5rem;
}

.spn-article-detail .spn-article-body img,
.spn-article-detail .spn-article-body-2 img {
    display: block;
    width: 100% !important;
    max-width: var(--spn-article-media-width) !important;
    height: auto !important;
    margin: 1.75rem auto;
    object-fit: contain;
}

.spn-article-detail .spn-article-body figure,
.spn-article-detail .spn-article-body-2 figure {
    width: 100% !important;
    max-width: var(--spn-article-media-width) !important;
    margin: 1.75rem auto;
}

.spn-article-detail figure img {
    margin: 0 auto;
}

.spn-article-detail figcaption,
.spn-article-detail .wp-caption-text {
    margin-top: 0.6rem;
    color: var(--spn-article-muted);
    font-size: 0.8125rem;
    line-height: 1.5;
    text-align: center;
}

.spn-article-detail iframe,
.spn-article-detail video,
.spn-article-detail table,
.spn-article-detail pre {
    max-width: 100%;
}

.spn-article-detail table,
.spn-article-detail pre {
    overflow-x: auto;
}

@media (max-width: 767px) {
    .spn-article-list,
    .spn-article-detail {
        padding: 2rem 1rem;
    }

    .spn-article-list ul {
        grid-template-columns: minmax(0, 1fr);
        gap: 1rem;
    }

    .spn-article-card {
        padding: 1.1rem;
    }

    .spn-article-detail .spn-article-body,
    .spn-article-detail .spn-article-body-2 {
        font-size: 1.0625rem;
        line-height: 1.68;
    }

    .spn-article-detail .spn-article-body h2,
    .spn-article-detail .spn-article-body-2 h2 {
        margin-top: 2rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .spn-article-card,
    .spn-article-card a,
    .spn-pagination a,
    .spn-per-page-bar a {
        transition: none !important;
    }
}