/* NEXA News — Editorial CSS */

:root {
    --color-ink:        #12121e;
    --color-bg:         #f8f7f4;
    --color-surface:    #ffffff;
    --color-text:       #1e1e2e;
    --color-text-light: #64647a;
    --color-border:     #e2e2ea;
    --color-accent:     #c0392b;
    --color-accent-dark:#a93226;
    --color-header-bg:  #12121e;
    --color-header-text:#ffffff;

    --color-badge-politics:     #2471a3;
    --color-badge-international:#117a65;
    --color-badge-economy:      #b7770d;
    --color-badge-technology:   #7d3c98;
    --color-badge-environment:  #1e8449;
    --color-badge-security:     #c0392b;
    --color-badge-society:      #2e4057;

    --font-serif: Georgia, 'Times New Roman', serif;
    --font-sans:  -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono:  'SF Mono', 'Fira Code', monospace;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:  0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
    --shadow-lg:  0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.06);

    --radius:     4px;
    --transition: 0.2s ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { height: 100%; }

body {
    font-family: var(--font-serif);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* ── Header ────────────────────────────────────────────────────────────────── */

.header {
    background-color: var(--color-header-bg);
    color: var(--color-header-text);
    border-top: 3px solid var(--color-accent);
}

.header-top {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
}

.logo-wordmark {
    font-family: 'Oswald', var(--font-sans);
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    color: #ffffff;
    text-decoration: none;
    line-height: 1;
    transition: opacity var(--transition);
}

.logo-wordmark:hover { opacity: 0.85; }

.logo-tagline {
    font-family: var(--font-sans);
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.38);
    text-align: center;
}

.header-date {
    font-family: var(--font-sans);
    font-size: 0.78rem;
    color: rgba(255,255,255,0.4);
    letter-spacing: 0.04em;
    padding-bottom: 0.1rem;
}

/* ── Hamburger button (mobile only) ───────────────────────────────────────── */

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-left: auto;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: rgba(255,255,255,0.8);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
    transform-origin: center;
}

/* Animate to X when open */
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Desktop nav ───────────────────────────────────────────────────────────── */

.header-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.header-nav::-webkit-scrollbar { display: none; }

.nav-link {
    display: block;
    padding: 0.65rem 1.1rem;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    transition: color var(--transition), border-color var(--transition);
}

.nav-link:hover {
    color: #fff;
    border-bottom-color: var(--color-accent);
}

/* ── Main Layout ───────────────────────────────────────────────────────────── */

.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 4rem;
    min-height: calc(100vh - 220px);
}

/* ── Featured Article ──────────────────────────────────────────────────────── */

.articles-container { width: 100%; }

.featured-article { margin-bottom: 3rem; }

.featured-link {
    display: grid;
    grid-template-columns: 1fr;
    text-decoration: none;
    color: inherit;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition);
    overflow: hidden;
}

.featured-link:hover { box-shadow: var(--shadow-md); }

/* When image is present: side-by-side on wide screens */
.featured-link.has-image {
    grid-template-columns: 1fr 1fr;
}

.featured-image {
    overflow: hidden;
    background-color: var(--color-border);
    min-height: 320px;
    position: relative;
}

.featured-image::after {
    content: '';
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 80px rgba(0,0,0,0.4);
    pointer-events: none;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.featured-link:hover .featured-image img { transform: scale(1.02); }

.featured-body {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 4px solid var(--color-accent);
}

.featured-category {
    margin-bottom: 0.9rem;
}

.featured-headline {
    font-size: 2rem;
    line-height: 1.25;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.featured-subheadline {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 1.25rem;
    font-style: italic;
    line-height: 1.5;
}

.featured-summary {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    color: var(--color-text);
    line-height: 1.7;
}

.featured-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

/* ── Article Grid ──────────────────────────────────────────────────────────── */

.section-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.section-divider-label {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-text-light);
    white-space: nowrap;
}

.section-divider-line {
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.article-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-border);
    flex-shrink: 0;
    position: relative;
}

.card-image::after {
    content: '';
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 50px rgba(0,0,0,0.35);
    pointer-events: none;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.article-card:hover .card-image img { transform: scale(1.04); }

.card-link {
    display: flex;
    flex-direction: column;
    padding: 1.35rem;
    text-decoration: none;
    color: inherit;
    flex: 1;
}

.card-headline {
    font-size: 1.1rem;
    line-height: 1.4;
    margin-bottom: 0.65rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.card-meta {
    display: flex;
    gap: 0.65rem;
    margin-bottom: 0.85rem;
    align-items: center;
    flex-wrap: wrap;
}

.card-summary {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-top: auto;
    padding-top: 0.5rem;
}

/* ── Badges & Metadata ────────────────────────────────────────────────────── */

.badge {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.65rem;
    padding: 0.25rem 0.55rem;
    border-radius: 2px;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.badge-politics     { background-color: var(--color-badge-politics); }
.badge-international{ background-color: var(--color-badge-international); }
.badge-economy      { background-color: var(--color-badge-economy); }
.badge-technology   { background-color: var(--color-badge-technology); }
.badge-environment  { background-color: var(--color-badge-environment); }
.badge-security     { background-color: var(--color-badge-security); }
.badge-society      { background-color: var(--color-badge-society); }

.meta-item {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ── Article Detail Page ───────────────────────────────────────────────────── */

.article {
    max-width: 760px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.article-kicker {
    margin-bottom: 1rem;
}

.article-headline {
    font-size: 2.6rem;
    line-height: 1.18;
    margin-bottom: 0.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.article-subheadline {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    font-style: italic;
    line-height: 1.5;
}

.article-meta-bar {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    align-items: center;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

/* ── Featured Image (article detail) ─────────────────────────────────────── */

.article-featured-image {
    margin: 0 0 2.5rem 0;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    position: relative;
}

.article-featured-image::after {
    content: '';
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 100px rgba(0,0,0,0.4);
    pointer-events: none;
    border-radius: var(--radius);
}

.article-featured-image img {
    width: 100%;
    height: auto;
    max-height: 480px;
    object-fit: cover;
    display: block;
}

/* ── Article Body ──────────────────────────────────────────────────────────── */

.executive-summary {
    font-size: 1.15rem;
    font-style: italic;
    padding: 1.5rem 1.75rem;
    border-left: 3px solid var(--color-accent);
    background: linear-gradient(to right, rgba(192,57,43,0.04), transparent);
    margin-bottom: 2.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.executive-summary p { margin: 0; line-height: 1.75; }

.article-body {
    font-size: 1.06rem;
    line-height: 1.85;
    margin-bottom: 2.5rem;
}

.article-body h3 {
    font-size: 1.35rem;
    margin: 2rem 0 0.75rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.article-body p { margin-bottom: 1.2rem; }

.article-body blockquote {
    border-left: 3px solid var(--color-text-light);
    padding: 0.5rem 0 0.5rem 1.5rem;
    margin: 1.75rem 0;
    font-style: italic;
    color: var(--color-text-light);
}

.article-body ul, .article-body ol {
    margin: 1rem 0 1.2rem 1.75rem;
}

.article-body li { margin-bottom: 0.5rem; }

/* ── Article Sections ──────────────────────────────────────────────────────── */

.article-section {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.article-section h3 {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.article-section h3::after {
    content: '';
    display: block;
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.article-section p { margin-bottom: 1rem; line-height: 1.8; }

/* ── Timeline ─────────────────────────────────────────────────────────────── */

.timeline ol {
    list-style: none;
    padding: 0;
    position: relative;
}

.timeline ol::before {
    content: '';
    position: absolute;
    left: 0.6rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: var(--color-border);
}

.timeline li {
    padding: 0 0 1.25rem 2.25rem;
    position: relative;
    font-family: var(--font-sans);
    font-size: 0.93rem;
    line-height: 1.65;
}

.timeline li:last-child { padding-bottom: 0; }

.timeline li::before {
    content: '';
    position: absolute;
    left: 0.35rem;
    top: 0.45rem;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: var(--color-accent);
    border: 2px solid var(--color-bg);
    box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline li strong {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--color-text-light);
    margin-bottom: 0.2rem;
}

/* ── Takeaways ────────────────────────────────────────────────────────────── */

.takeaways {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.takeaways li {
    padding: 0.85rem 1rem 0.85rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    font-size: 0.97rem;
    line-height: 1.65;
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* ── Article Footer ────────────────────────────────────────────────────────── */

.article-footer {
    padding-top: 2rem;
    margin-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.tags-label {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 0.75rem;
}

.tags {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.tag-pill {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    text-decoration: none;
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    transition: background-color var(--transition), border-color var(--transition);
}

.tag-pill:hover {
    background-color: var(--color-ink);
    color: white;
    border-color: var(--color-ink);
}

/* ── Category Heading ──────────────────────────────────────────────────────── */

.category-heading {
    font-size: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--color-accent);
    display: inline-block;
}

/* ── Error Pages ───────────────────────────────────────────────────────────── */

.error-container {
    max-width: 560px;
    margin: 5rem auto;
    text-align: center;
}

.error-code {
    font-size: 6rem;
    color: var(--color-border);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 1rem;
}

.error-message {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.error-description {
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
}

.error-link {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    background-color: var(--color-accent);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color var(--transition);
}

.error-link:hover { background-color: var(--color-accent-dark); }

.no-articles {
    text-align: center;
    color: var(--color-text-light);
    padding: 4rem 2rem;
    font-family: var(--font-sans);
}

/* ── Footer ────────────────────────────────────────────────────────────────── */

.footer {
    background-color: var(--color-ink);
    color: rgba(255,255,255,0.5);
    padding: 2.5rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.82rem;
    margin-top: 4rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-brand {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.8);
}

.footer-copy { line-height: 1.6; }

/* ── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 1000px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }

    .featured-link.has-image { grid-template-columns: 1fr; }
    .featured-image { min-height: 260px; aspect-ratio: 16 / 7; }
    .featured-body { border-left: none; border-top: 4px solid var(--color-accent); }

    .header-top { flex-direction: row; align-items: center; }
    .header-date { display: none; }
}

@media (max-width: 768px) {
    /* Show hamburger, hide desktop nav by default */
    .nav-toggle { display: flex; }

    .header-nav {
        display: none;
        flex-direction: column;
        padding: 0;
        border-top: 1px solid rgba(255,255,255,0.08);
    }

    .header-nav.is-open { display: flex; }

    .nav-link {
        padding: 0.9rem 1.5rem;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        border-left: none;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.75);
    }

    .nav-link:hover {
        background: rgba(255,255,255,0.05);
        border-bottom-color: rgba(255,255,255,0.06);
        color: #fff;
    }
}

@media (max-width: 640px) {
    .articles-grid { grid-template-columns: 1fr; }

    .featured-headline { font-size: 1.6rem; }
    .article-headline  { font-size: 1.9rem; }
    .main              { padding: 1.5rem 1rem 3rem; }
    .featured-body     { padding: 1.5rem; }
    .article           { max-width: 100%; }
}