/* ================================================================
   Archel Blog — stylistyka dla artykułów SEO
   Spójna z ciemnym motywem rodoiodo.pl
   ================================================================ */

:root {
    --blog-bg: #0a0a0b;
    --blog-panel: #111114;
    --blog-panel-alt: #17171b;
    --blog-border: rgba(255, 255, 255, 0.08);
    --blog-border-strong: rgba(255, 255, 255, 0.14);
    --blog-text: #e5e7eb;
    --blog-text-muted: #9ca3af;
    --blog-text-dim: #6b7280;
    --blog-accent: #60a5fa;
    --blog-accent-strong: #3b82f6;
    --blog-heading: #f3f4f6;
    --blog-radius: 14px;
    --blog-max: 780px;
    --blog-max-wide: 1180px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--blog-bg);
    color: var(--blog-text);
    font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 17px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a { color: var(--blog-accent); text-decoration: none; }
a:hover { color: var(--blog-accent-strong); text-decoration: underline; }

/* ============ HEADER ============ */
.blog-header {
    background: var(--blog-panel);
    border-bottom: 1px solid var(--blog-border);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.blog-header-inner {
    max-width: var(--blog-max-wide);
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.blog-header-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    color: var(--blog-heading);
}

.blog-header-brand:hover { text-decoration: none; }

.blog-header-brand-logo {
    width: 34px;
    height: 34px;
    background: var(--blog-accent-strong);
    color: #fff;
    display: grid;
    place-items: center;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.blog-header-brand-title { font-weight: 700; font-size: 1rem; line-height: 1.1; }
.blog-header-brand-subtitle { font-size: 0.78rem; color: var(--blog-text-muted); }

.blog-header-nav {
    display: flex;
    gap: 1.2rem;
    align-items: center;
    font-size: 0.92rem;
}

.blog-header-nav a { color: var(--blog-text-muted); }
.blog-header-nav a:hover { color: var(--blog-heading); text-decoration: none; }

.blog-header-cta {
    background: var(--blog-accent-strong);
    color: #fff !important;
    padding: 0.55rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}
.blog-header-cta:hover { background: #2563eb; text-decoration: none; }

/* ============ BREADCRUMB ============ */
.blog-breadcrumb {
    max-width: var(--blog-max-wide);
    margin: 0 auto;
    padding: 1.2rem 1.5rem 0;
    font-size: 0.85rem;
    color: var(--blog-text-dim);
}
.blog-breadcrumb a { color: var(--blog-text-muted); }
.blog-breadcrumb .sep { margin: 0 0.5rem; color: var(--blog-text-dim); }

/* ============ ARTICLE ============ */
.blog-article {
    max-width: var(--blog-max);
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

.blog-article-eyebrow {
    display: inline-block;
    font-size: 0.72rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--blog-accent);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    margin-bottom: 1.2rem;
    border: 1px solid rgba(96, 165, 250, 0.25);
}

.blog-article h1 {
    font-family: "Space Grotesk", "Segoe UI", -apple-system, sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    line-height: 1.15;
    color: var(--blog-heading);
    margin: 0 0 1.2rem;
    letter-spacing: -0.02em;
}

.blog-article-meta {
    color: var(--blog-text-dim);
    font-size: 0.85rem;
    margin-bottom: 2.5rem;
    display: flex;
    gap: 0.7rem;
    flex-wrap: wrap;
    align-items: center;
}
.blog-article-meta .dot { opacity: 0.4; }

.blog-lede {
    font-size: 1.15rem;
    line-height: 1.65;
    color: #d1d5db;
    margin-bottom: 2rem;
    border-left: 3px solid var(--blog-accent);
    padding-left: 1.2rem;
}

.blog-article h2 {
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: 1.55rem;
    line-height: 1.25;
    color: var(--blog-heading);
    margin: 2.8rem 0 1rem;
    letter-spacing: -0.01em;
    scroll-margin-top: 5rem;
}

.blog-article h3 {
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: 1.2rem;
    line-height: 1.3;
    color: var(--blog-heading);
    margin: 2rem 0 0.7rem;
}

.blog-article p { margin: 0 0 1.1rem; }
.blog-article strong { color: var(--blog-heading); font-weight: 600; }
.blog-article em { color: #cbd5e1; font-style: italic; }

.blog-article ul, .blog-article ol {
    margin: 0 0 1.4rem;
    padding-left: 1.4rem;
}
.blog-article li { margin-bottom: 0.5rem; }
.blog-article li::marker { color: var(--blog-accent); }

.blog-article blockquote {
    margin: 1.8rem 0;
    padding: 1.2rem 1.5rem;
    background: var(--blog-panel);
    border-left: 3px solid var(--blog-accent);
    border-radius: 0 var(--blog-radius) var(--blog-radius) 0;
    color: #cbd5e1;
    font-style: italic;
}

.blog-article table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.8rem 0;
    background: var(--blog-panel);
    border-radius: var(--blog-radius);
    overflow: hidden;
    font-size: 0.94rem;
}
.blog-article th, .blog-article td {
    padding: 0.85rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--blog-border);
    vertical-align: top;
}
.blog-article th {
    background: var(--blog-panel-alt);
    color: var(--blog-heading);
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.blog-article tr:last-child td { border-bottom: 0; }
.blog-article-table-wrap { overflow-x: auto; }

/* ============ TOC ============ */
.blog-toc {
    background: var(--blog-panel);
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 1.2rem 1.4rem;
    margin: 1.5rem 0 2.5rem;
}
.blog-toc-title {
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--blog-text-dim);
    margin: 0 0 0.7rem;
    font-weight: 600;
}
.blog-toc ol {
    margin: 0;
    padding-left: 1.2rem;
    font-size: 0.94rem;
    line-height: 1.6;
}
.blog-toc a { color: var(--blog-text); }
.blog-toc a:hover { color: var(--blog-accent); }

/* ============ KEY TAKEAWAY BOX ============ */
.blog-key-fact {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0.02) 100%);
    border: 1px solid rgba(96, 165, 250, 0.25);
    border-radius: var(--blog-radius);
    padding: 1.4rem 1.5rem;
    margin: 2rem 0;
}
.blog-key-fact-title {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--blog-accent);
    margin: 0 0 0.6rem;
    font-weight: 700;
}
.blog-key-fact p { margin: 0; color: #e5e7eb; }
.blog-key-fact strong { color: #fff; }

/* ============ CTA ============ */
.blog-cta-box {
    background: var(--blog-panel);
    border: 1px solid var(--blog-border-strong);
    border-radius: var(--blog-radius);
    padding: 2rem;
    margin: 3rem 0 0;
    text-align: center;
}
.blog-cta-box h3 {
    margin: 0 0 0.7rem;
    color: var(--blog-heading);
    font-size: 1.3rem;
}
.blog-cta-box p {
    color: var(--blog-text-muted);
    margin: 0 0 1.3rem;
}
.blog-cta-btn {
    display: inline-block;
    background: var(--blog-accent-strong);
    color: #fff !important;
    padding: 0.85rem 1.6rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.98rem;
}
.blog-cta-btn:hover { background: #2563eb; text-decoration: none; }
.blog-cta-secondary {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.85rem 1.6rem;
    color: var(--blog-text-muted);
    font-weight: 500;
}

/* ============ FAQ ============ */
.blog-faq { margin: 2.5rem 0; }
.blog-faq-item {
    background: var(--blog-panel);
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 1.2rem 1.4rem;
    margin-bottom: 0.9rem;
}
.blog-faq-item h3 {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
    color: var(--blog-heading);
}
.blog-faq-item p { margin: 0; color: #d1d5db; font-size: 0.96rem; }

/* ============ RELATED ============ */
.blog-related {
    max-width: var(--blog-max);
    margin: 3rem auto 0;
    padding: 0 1.5rem;
}
.blog-related h2 {
    font-family: "Space Grotesk", sans-serif;
    color: var(--blog-heading);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}
.blog-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}
.blog-related-card {
    background: var(--blog-panel);
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 1.2rem;
    transition: border-color 0.2s;
    text-decoration: none;
    color: inherit;
}
.blog-related-card:hover {
    border-color: var(--blog-accent);
    text-decoration: none;
}
.blog-related-card h3 {
    margin: 0 0 0.4rem;
    font-size: 1rem;
    color: var(--blog-heading);
    line-height: 1.35;
}
.blog-related-card p { margin: 0; font-size: 0.87rem; color: var(--blog-text-muted); }

/* ============ INDEX (blog listing) ============ */
.blog-hero {
    max-width: var(--blog-max-wide);
    margin: 0 auto;
    padding: 3rem 1.5rem 1.5rem;
    text-align: center;
}
.blog-hero h1 {
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--blog-heading);
    margin: 0 0 1rem;
    letter-spacing: -0.02em;
}
.blog-hero p {
    color: var(--blog-text-muted);
    font-size: 1.05rem;
    max-width: 640px;
    margin: 0 auto;
}

.blog-list {
    max-width: var(--blog-max-wide);
    margin: 2rem auto 0;
    padding: 0 1.5rem 4rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.4rem;
}

.blog-list-card {
    background: var(--blog-panel);
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 1.6rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, border-color 0.2s;
}
.blog-list-card:hover {
    transform: translateY(-3px);
    border-color: var(--blog-accent);
    text-decoration: none;
}
.blog-list-card-eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--blog-accent);
    font-weight: 700;
}
.blog-list-card h2 {
    margin: 0;
    font-family: "Space Grotesk", sans-serif;
    font-size: 1.25rem;
    color: var(--blog-heading);
    line-height: 1.3;
}
.blog-list-card p {
    margin: 0;
    color: var(--blog-text-muted);
    font-size: 0.95rem;
    flex: 1;
}
.blog-list-card-meta {
    font-size: 0.82rem;
    color: var(--blog-text-dim);
    display: flex;
    gap: 0.7rem;
    align-items: center;
    margin-top: 0.5rem;
}
.blog-list-card-meta .dot { opacity: 0.4; }

/* ============ FOOTER ============ */
.blog-footer {
    background: var(--blog-panel);
    border-top: 1px solid var(--blog-border);
    padding: 2rem 1.5rem;
    margin-top: 4rem;
    text-align: center;
    color: var(--blog-text-muted);
    font-size: 0.88rem;
}
.blog-footer a { color: var(--blog-text); margin: 0 0.5rem; }
.blog-footer-brand { color: var(--blog-heading); font-weight: 600; margin-bottom: 0.6rem; }
.blog-footer-legal { margin-top: 0.8rem; font-size: 0.82rem; color: var(--blog-text-dim); }

/* ============ RESPONSIVE ============ */
@media (max-width: 640px) {
    .blog-header-nav { display: none; }
    .blog-article { padding: 1.5rem 1rem 3rem; }
    .blog-hero { padding: 2rem 1rem 1rem; }
    .blog-list { padding: 0 1rem 3rem; }
    body { font-size: 16px; }
}