/* Minimal editorial UI for an RSS-first AI tools blog. */

:root {
    --color-text: #111;
    --color-muted: #5f6368;
    --color-subtle: #8a8f98;
    --color-border: #dedede;
    --color-soft-border: #eeeeee;
    --color-bg: #fff;
    --color-bg-soft: #f7f7f7;
    --content-width: 880px;
    --measure: 700px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
}

body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    margin: 0 auto;
    max-width: var(--content-width);
    padding: 28px 28px 36px;
    text-rendering: optimizeLegibility;
    width: 100%;
}

img {
    display: block;
    height: auto;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration-color: currentColor;
    text-underline-offset: 0.18em;
}

a:hover {
    text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible,
select:focus-visible {
    outline: 2px dashed var(--color-text);
    outline-offset: 4px;
}

main,
article,
section,
div,
p,
h1,
h2,
h3,
li,
a {
    min-width: 0;
    overflow-wrap: break-word;
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--color-soft-border);
    margin-bottom: 48px;
    padding-bottom: 22px;
}

.site-nav {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: space-between;
}

.logo {
    color: var(--color-text);
    font-size: 1.08rem;
    font-weight: 760;
    line-height: 1.2;
    max-width: 100%;
    text-decoration: none;
}

.language-select {
    appearance: none;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font: inherit;
    font-size: 0.92rem;
    line-height: 1.2;
    max-width: 100%;
    min-height: 38px;
    padding: 8px 34px 8px 12px;
}

/* Article List */
.home-intro {
    border-bottom: 1px solid var(--color-soft-border);
    margin-bottom: 40px;
    max-width: var(--measure);
    padding-bottom: 32px;
}

.home-intro h1 {
    font-size: 4rem;
    font-weight: 780;
    line-height: 1.02;
    margin-bottom: 18px;
}

.home-intro p {
    color: var(--color-muted);
    font-size: 1.12rem;
    line-height: 1.55;
    max-width: 620px;
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.article-card {
    border-bottom: 1px solid var(--color-soft-border);
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(180px, 260px) minmax(0, 1fr);
    padding-bottom: 30px;
}

.cover-image {
    aspect-ratio: 1200 / 630;
    background: var(--color-bg-soft);
    border-radius: 8px;
    overflow: hidden;
    width: 100%;
}

.cover-image img {
    aspect-ratio: 1200 / 630;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-soft-border);
    border-radius: 8px;
    height: 100%;
    object-fit: cover;
    width: 100%;
}

.article-info {
    align-self: center;
    min-width: 0;
}

.article-info h2 {
    font-size: 1.75rem;
    font-weight: 740;
    line-height: 1.18;
    margin-bottom: 12px;
}

.article-info h2 a {
    color: var(--color-text);
    text-decoration: none;
}

.article-info h2 a:hover {
    text-decoration: underline;
}

.article-info time {
    color: var(--color-subtle);
    display: block;
    font-size: 0.92rem;
    margin-bottom: 16px;
}

.article-summary {
    color: var(--color-muted);
    font-size: 0.98rem;
    line-height: 1.55;
    margin-bottom: 14px;
    max-width: 560px;
}

.read-more {
    align-items: center;
    border: 1px solid var(--color-text);
    border-radius: 8px;
    color: var(--color-text);
    display: inline-flex;
    justify-content: center;
    min-height: 38px;
    padding: 0;
    text-decoration: none;
    width: 44px;
}

.read-more svg {
    display: block;
    height: 20px;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
    width: 20px;
}

.read-more svg path {
    fill: none;
}

.read-more:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

.no-articles {
    border: 1px solid var(--color-soft-border);
    border-radius: 8px;
    color: var(--color-muted);
    padding: 34px;
    text-align: center;
}

/* Article Detail */
.article-detail {
    max-width: var(--measure);
}

.article-header {
    margin-bottom: 40px;
}

.article-header .cover-image {
    margin-bottom: 28px;
}

.article-header h1 {
    font-size: 3.6rem;
    font-weight: 780;
    line-height: 1.05;
    margin-bottom: 14px;
}

.article-header time {
    color: var(--color-subtle);
    font-size: 0.95rem;
}

.article-content {
    font-size: 1.05rem;
    line-height: 1.78;
}

.article-content h2 {
    font-size: 1.9rem;
    line-height: 1.22;
    margin: 40px 0 14px;
}

.article-content h3 {
    font-size: 1.22rem;
    line-height: 1.28;
    margin: 32px 0 12px;
}

.article-content p {
    margin-bottom: 18px;
}

.article-content ul,
.article-content ol {
    margin: 18px 0 22px;
    padding-left: 26px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    border-left: 3px solid var(--color-text);
    color: var(--color-muted);
    margin: 26px 0;
    padding-left: 18px;
}

.article-content code {
    background: var(--color-bg-soft);
    border-radius: 6px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 0.92em;
    padding: 0.12em 0.32em;
}

.article-content pre {
    background: var(--color-bg-soft);
    border-radius: 8px;
    margin: 24px 0;
    overflow-x: auto;
    padding: 16px;
}

.article-content pre code {
    background: transparent;
    padding: 0;
}

.article-content img,
.article-content iframe,
.article-content video {
    border-radius: 8px;
    height: auto;
    margin: 26px 0;
    max-width: 100%;
}

.article-content iframe,
.article-content video {
    aspect-ratio: 16 / 9;
    width: 100%;
}

/* Page Content */
.page-content {
    max-width: var(--measure);
}

.page-content h1 {
    font-size: 3.2rem;
    font-weight: 780;
    line-height: 1.08;
    margin-bottom: 22px;
}

.page-content h2 {
    font-size: 1.8rem;
    line-height: 1.24;
    margin: 38px 0 14px;
}

.page-content p {
    color: var(--color-text);
    font-size: 1.03rem;
    margin-bottom: 18px;
}

.page-content ul {
    margin: 18px 0 22px;
    padding-left: 26px;
}

.page-content li {
    margin-bottom: 8px;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-soft-border);
    color: var(--color-muted);
    margin-top: 70px;
    padding-top: 24px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin-bottom: 14px;
}

.footer-links a {
    color: var(--color-text);
    font-size: 0.94rem;
    font-weight: 620;
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

.site-footer p {
    color: var(--color-subtle);
    font-size: 0.9rem;
}

/* Pagination */
.pagination {
    align-items: center;
    border-top: 1px solid var(--color-soft-border);
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: space-between;
    margin-top: 44px;
    padding-top: 24px;
}

.pagination a,
.pagination span {
    border-radius: 8px;
    display: inline-block;
    padding: 9px 14px;
    text-decoration: none;
}

.pagination a {
    border: 1px solid var(--color-text);
    color: var(--color-text);
    font-weight: 660;
}

.pagination a:hover {
    background: var(--color-text);
    color: var(--color-bg);
}

.pagination .disabled {
    border: 1px solid var(--color-border);
    color: var(--color-subtle);
}

.pagination .page-info {
    border: none;
    color: var(--color-muted);
}

@media (max-width: 760px) {
    body {
        padding: 20px 18px 30px;
    }

    .site-header {
        margin-bottom: 38px;
    }

    .site-nav {
        align-items: flex-start;
        flex-direction: column;
        width: 100%;
    }

    .language-select {
        width: 100%;
    }

    .home-intro {
        margin-bottom: 32px;
        padding-bottom: 26px;
    }

    .home-intro h1 {
        font-size: 2.6rem;
        line-height: 1.08;
    }

    .home-intro p {
        font-size: 1.03rem;
    }

    .article-card {
        grid-template-columns: 1fr;
    }

    .article-info {
        align-self: start;
    }

    .article-info h2 {
        font-size: 1.45rem;
    }

    .article-header h1 {
        font-size: 2.5rem;
        line-height: 1.08;
    }

    .article-content {
        font-size: 1rem;
    }

    .article-content h2,
    .page-content h2 {
        font-size: 1.45rem;
    }

    .page-content h1 {
        font-size: 2.35rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 8px;
    }

    .pagination {
        align-items: stretch;
        flex-direction: column;
    }

    .pagination a,
    .pagination span {
        text-align: center;
        width: 100%;
    }
}

@media (max-width: 420px) {
    body {
        padding: 18px 14px 28px;
    }

    .home-intro h1,
    .article-header h1,
    .page-content h1 {
        font-size: 2rem;
    }

    .article-card {
        gap: 18px;
        padding-bottom: 26px;
    }

    .article-info h2 {
        font-size: 1.3rem;
    }

    .read-more {
        min-height: 40px;
        width: 46px;
    }
}