@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;600&display=swap');

:root {
    --primary: #0f62fe;
    --blue-80: #002d9c;
    --ink: #161616;
    --ink-muted: #525252;
    --ink-subtle: #8c8c8c;
    --canvas: #ffffff;
    --surface-1: #f4f4f4;
    --surface-2: #e0e0e0;
    --hairline: #e0e0e0;
    --inverse-canvas: #161616;
    --inverse-surface-1: #262626;
    --inverse-ink-muted: #c6c6c6;
    --success: #24a148;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
    color: var(--ink);
    background: var(--canvas);
    letter-spacing: 0.16px;
    font-size: 16px;
}

h1, h2, h3, h4 { font-weight: 400; letter-spacing: 0; }
h1 { font-weight: 300; font-size: 42px; line-height: 1.2; }
h2 { font-size: 32px; margin-top: 48px; margin-bottom: 16px; }
h3 { font-size: 24px; margin-top: 28px; margin-bottom: 12px; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.utility-bar {
    background: var(--surface-1);
    color: var(--ink-muted);
    font-size: 12px;
    letter-spacing: 0.32px;
    height: 32px;
    display: flex;
    align-items: center;
}

.top-nav {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 50;
    height: 64px;
    display: flex;
    align-items: center;
}
.top-nav > .container { width: 100%; }

.brand { font-size: 18px; font-weight: 600; color: var(--ink); }
.brand span { color: var(--primary); }
.brand:hover { text-decoration: none; }

.main-nav { gap: 28px; }
.main-nav a { color: var(--ink); font-size: 14px; padding: 8px 0; }
.main-nav a:hover { text-decoration: none; border-bottom: 2px solid var(--primary); }

.navbar-toggler {
    background: none;
    border: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
}
.navbar-toggler span { width: 22px; height: 2px; background: var(--ink); display: block; }

.main-nav-mobile {
    display: none;
    flex-direction: column;
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 16px 24px;
    gap: 16px;
}
.main-nav-mobile.open { display: flex; }

.breadcrumbs {
    background: var(--surface-1);
    padding: 10px 0;
    font-size: 13px;
}
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; color: var(--ink-muted); }
.breadcrumbs li + li::before { content: "/"; margin-right: 6px; color: var(--ink-subtle); }
.breadcrumbs li { display: flex; gap: 6px; }

.hero-band {
    padding: 64px 0;
    border-bottom: 1px solid var(--hairline);
}
.hero-band .eyebrow {
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 12px;
    display: inline-block;
}
.hero-band h1 { max-width: 780px; }
.hero-band p.lead { max-width: 640px; font-size: 18px; color: var(--ink-muted); }

.section { padding: 56px 0; }
.section-alt { background: var(--surface-1); }
.section-head { max-width: 680px; margin-bottom: 32px; }
.section-head .eyebrow { font-size: 14px; color: var(--primary); }

.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--hairline); border-left: none; }
.feature-card {
    background: var(--canvas);
    border-left: 1px solid var(--hairline);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.feature-card img { margin-bottom: 12px; aspect-ratio: 4/3; object-fit: cover; }
.feature-card .kategoria { font-size: 12px; color: var(--primary); letter-spacing: 0.32px; }
.feature-card h3 { font-size: 20px; margin: 0; }
.feature-card p { font-size: 14px; color: var(--ink-muted); flex: 1; }

.btn-primary-flat {
    display: inline-flex;
    align-items: center;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    padding: 12px 16px;
    border: none;
}
.btn-primary-flat:hover { background: var(--blue-80); color: #fff; text-decoration: none; }
.btn-tertiary-flat {
    display: inline-flex;
    align-items: center;
    background: var(--canvas);
    color: var(--primary);
    font-size: 14px;
    padding: 12px 16px;
    border: 1px solid var(--primary);
}
.btn-tertiary-flat:hover { text-decoration: none; background: var(--surface-1); }

.ecosystem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.ecosystem-tile { background: var(--canvas); padding: 24px; }
.ecosystem-tile h4 { font-size: 16px; margin-bottom: 8px; }
.ecosystem-tile p { font-size: 13px; color: var(--ink-muted); margin: 0; }

.cta-banner {
    background: var(--primary);
    color: #fff;
    padding: 48px;
    text-align: center;
}
.cta-banner h2 { color: #fff; font-size: 32px; margin: 0 0 12px; }
.cta-banner p { color: #d0e2ff; margin: 0 0 20px; }

.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 40px; }
.article-main .meta { color: var(--ink-muted); font-size: 14px; margin-bottom: 16px; }
.article-hero-img figcaption { font-size: 13px; color: var(--ink-muted); margin-top: 8px; }

.toc-panel {
    background: var(--surface-1);
    border: 1px solid var(--hairline);
    padding: 20px;
    position: sticky;
    top: 80px;
}
.toc-panel h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.32px; margin: 0 0 12px; }
.toc-panel ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.toc-panel a { font-size: 14px; color: var(--ink-muted); }
.toc-panel a:hover { color: var(--primary); }

.article-prose p { font-size: 16px; line-height: 1.5; color: var(--ink-muted); margin-bottom: 16px; }
.article-prose h2 { scroll-margin-top: 90px; }
.article-prose h3 { scroll-margin-top: 90px; }

.faq-row {
    background: var(--canvas);
    border: 1px solid var(--hairline);
    border-top: none;
    padding: 4px 20px;
}
.faq-row:first-of-type { border-top: 1px solid var(--hairline); }
.faq-row summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 600; }
.faq-row summary::-webkit-details-marker { display: none; }
.faq-row summary::after { content: "+"; float: right; color: var(--primary); font-weight: 400; }
.faq-row[open] summary::after { content: "−"; }
.faq-row p { padding-bottom: 16px; color: var(--ink-muted); }

.related-section { padding: 48px 0 64px; border-top: 1px solid var(--hairline); }
.related-tile {
    display: block;
    background: var(--canvas);
    border: 1px solid var(--hairline);
    padding: 20px;
    color: var(--ink);
    height: 100%;
}
.related-tile:hover { text-decoration: none; background: var(--surface-1); }
.related-kategoria { font-size: 12px; color: var(--primary); }
.related-tile h3 { font-size: 16px; margin: 8px 0; }
.related-tile p { font-size: 13px; color: var(--ink-muted); margin: 0; }

.legal-content p, .legal-content li { color: var(--ink-muted); font-size: 16px; line-height: 1.5; }
.disclaimer-block {
    background: var(--surface-1);
    border-left: 3px solid var(--primary);
    padding: 16px 20px;
    margin: 24px 0;
    font-size: 14px;
    color: var(--ink-muted);
}

.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--ink); }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 11px 16px;
    background: var(--surface-1);
    border: none;
    border-bottom: 1px solid var(--ink-subtle);
    font-family: inherit;
    font-size: 16px;
    color: var(--ink);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-bottom: 2px solid var(--primary); }
.form-error { color: #da1e28; font-size: 13px; margin-top: 4px; display: none; }
.form-status {
    margin-top: 16px;
    padding: 14px 18px;
    background: #defbe6;
    color: var(--success);
    font-size: 14px;
    display: none;
}
.contact-info-tile { background: var(--surface-1); border: 1px solid var(--hairline); padding: 28px; }

.cookie-banner {
    position: fixed;
    bottom: 16px;
    left: 16px;
    right: 16px;
    max-width: 640px;
    margin: 0 auto;
    background: var(--inverse-canvas);
    color: #fff;
    padding: 20px 24px;
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    z-index: 100;
}
.cookie-banner p { margin: 0; font-size: 14px; flex: 1; min-width: 200px; color: #fff; }
.cookie-actions { display: flex; gap: 10px; }
.cookie-actions button { padding: 10px 16px; border: none; font-size: 13px; }
.cookie-accept { background: var(--primary); color: #fff; }
.cookie-reject { background: transparent; color: #fff; border: 1px solid var(--ink-subtle) !important; }

.site-footer {
    background: var(--inverse-canvas);
    color: var(--inverse-ink-muted);
    padding: 64px 0 24px;
    margin-top: 48px;
}
.footer-logo { font-size: 18px; font-weight: 600; color: #fff; margin-bottom: 12px; }
.footer-logo span { color: #78a9ff; }
.footer-text { font-size: 14px; max-width: 320px; }
.footer-disclaimer { font-style: italic; font-size: 13px; }
.site-footer h3 { color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: 0.32px; margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.site-footer a { color: var(--inverse-ink-muted); font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid var(--inverse-surface-1);
    margin-top: 32px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-subtle);
}

@media (max-width: 992px) {
    .card-grid, .ecosystem-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .toc-panel { position: static; }
}

@media (max-width: 640px) {
    h1 { font-size: 30px; }
    .card-grid, .ecosystem-grid { grid-template-columns: 1fr; }
    .contact-layout { grid-template-columns: 1fr; }
}