/* EET-20.cz — design system
   Cíl: důvěryhodný YMYL web, skvělé CWV, čisté sémantické HTML pro SEO i AI. */

:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f4f7f8;
  --c-bg-tint: #eef5f6;
  --c-ink: #16242a;
  --c-ink-soft: #4a5b62;
  --c-line: #dce4e7;
  --c-brand: #0c5c6e;       /* deep teal – důvěra */
  --c-brand-dark: #084450;
  --c-brand-soft: #d7ebef;
  --c-accent: #b45309;      /* tmavší amber – CTA; 4.5:1 na bílé (WCAG AA) */
  --c-accent-dark: #92400e;
  --c-ok: #1f8a4c;
  --c-warn-bg: #fff6e6;
  --c-warn-line: #f0c060;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(16,36,42,.06), 0 6px 20px rgba(16,36,42,.07);
  --maxw: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.65;
  font-size: 18px;
}
img { max-width: 100%; height: auto; }
a { color: var(--c-brand); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--c-brand-dark); }
h1, h2, h3 { line-height: 1.2; color: var(--c-ink); font-weight: 750; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 .5em; letter-spacing: -.01em; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.8rem); margin: 2.2rem 0 .8rem; }
h3 { font-size: 1.18rem; margin: 1.5rem 0 .5rem; }
p { margin: 0 0 1rem; }
:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 2px; border-radius: 4px; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line);
}
.site-header .bar { display: flex; align-items: center; gap: 1.5rem; height: 64px; }
.logo { font-weight: 800; font-size: 1.2rem; color: var(--c-brand); text-decoration: none; letter-spacing: -.02em; white-space: nowrap; }
.logo span { color: var(--c-accent); }
.nav { display: flex; gap: 1.1rem; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--c-ink-soft); text-decoration: none; font-size: .98rem; font-weight: 600; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--c-brand); }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--c-line); border-radius: var(--radius-sm); padding: .4rem .6rem; font-size: 1.1rem; cursor: pointer; }

/* ---------- Buttons ---------- */
.btn { display: inline-block; padding: .8rem 1.4rem; border-radius: var(--radius-sm); font-weight: 700; text-decoration: none; cursor: pointer; border: 0; font-size: 1rem; transition: transform .05s ease, background .15s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-accent); color: #fff; }
.btn-primary:hover { background: var(--c-accent-dark); color: #fff; }
.btn-ghost { background: var(--c-brand-soft); color: var(--c-brand-dark); }
.btn-ghost:hover { background: #c6e2e7; color: var(--c-brand-dark); }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(160deg, var(--c-bg-tint), #fff 70%); border-bottom: 1px solid var(--c-line); padding: 3rem 0 2.5rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2.5rem; align-items: center; }
.hero-media { position: relative; margin: .5rem 1.2rem 1.4rem 0; }
.hero-media::before { content: ""; position: absolute; top: 1.1rem; left: 1.1rem; right: -1.1rem; bottom: -1.1rem; background: linear-gradient(135deg, var(--c-brand-soft), var(--c-brand)); border-radius: var(--radius); opacity: .55; }
.hero-img { position: relative; width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow); border: 4px solid #fff; display: block; }
.hero-badge { position: absolute; left: -1rem; bottom: -1.2rem; background: #fff; border: 1px solid var(--c-line); border-left: 5px solid var(--c-accent); border-radius: var(--radius-sm); padding: .55rem .9rem; box-shadow: var(--shadow); display: flex; flex-direction: column; line-height: 1.15; }
.hero-badge .big { font-size: 1.5rem; font-weight: 800; color: var(--c-brand); }
.hero-badge .lbl { font-size: .78rem; color: var(--c-ink-soft); font-weight: 600; }

/* ---------- Trust strip ---------- */
.trust-strip { list-style: none; display: flex; flex-wrap: wrap; gap: .6rem 1rem; padding: 0; margin: 1.3rem 0 0; }
.trust-strip li { background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: 999px; padding: .45rem 1rem; font-size: .88rem; color: var(--c-ink-soft); }
.trust-strip strong { color: var(--c-ink); }
.deadline { font-size: .95rem; color: var(--c-ink-soft); }
.deadline strong { color: var(--c-accent-dark); }
.cta-row { display: flex; gap: .7rem; flex-wrap: wrap; margin: 1.4rem 0; }
.eyebrow { display: inline-block; background: var(--c-brand-soft); color: var(--c-brand-dark); font-weight: 700; font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; padding: .3rem .7rem; border-radius: 999px; margin-bottom: 1rem; }
.hero p.lead { font-size: 1.18rem; color: var(--c-ink-soft); max-width: 60ch; }
.hero-cta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.4rem; }

/* ---------- TL;DR / answer-first box ---------- */
.tldr { background: var(--c-bg-soft); border: 1px solid var(--c-line); border-left: 5px solid var(--c-brand); border-radius: var(--radius); padding: 1.2rem 1.4rem; margin: 1.6rem 0; }
.tldr h2, .tldr h3 { margin-top: 0; font-size: 1.05rem; text-transform: uppercase; letter-spacing: .04em; color: var(--c-brand-dark); }
.tldr ul { margin: .4rem 0 0; padding-left: 1.2rem; }
.tldr li { margin: .35rem 0; }

/* ---------- Updated badge / legislativa note ---------- */
.updated { font-size: .9rem; color: var(--c-ink-soft); display: inline-flex; align-items: center; gap: .4rem; }
.note { background: var(--c-warn-bg); border: 1px solid var(--c-warn-line); border-radius: var(--radius-sm); padding: .9rem 1.1rem; font-size: .96rem; margin: 1.4rem 0; }
.note strong { color: var(--c-accent-dark); }

/* ---------- Cards grid ---------- */
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 1.3rem; box-shadow: var(--shadow); }
.card h3 { margin-top: 0; }
.card a.cardlink { text-decoration: none; color: inherit; display: block; }
.card a.cardlink:hover h3 { color: var(--c-brand); }
.card .ico { font-size: 1.6rem; }
.fact { text-align: center; }
.fact .big { font-size: 1.7rem; font-weight: 800; color: var(--c-brand); display: block; }
.fact .lbl { color: var(--c-ink-soft); font-size: .95rem; }

/* ---------- Section ---------- */
section.block { padding: 2.5rem 0; }
section.block.alt { background: var(--c-bg-soft); border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.section-head { max-width: 70ch; margin-bottom: 1.4rem; }
.section-head p { color: var(--c-ink-soft); margin: 0; }

/* ---------- Steps ---------- */
.steps { counter-reset: step; display: grid; gap: .9rem; }
.steps li { list-style: none; position: relative; padding: 1rem 1rem 1rem 3.4rem; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); }
.steps li::before { counter-increment: step; content: counter(step); position: absolute; left: 1rem; top: 1rem; width: 1.8rem; height: 1.8rem; background: var(--c-brand); color: #fff; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: .95rem; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; }
table.data { border-collapse: collapse; width: 100%; font-size: .98rem; background: #fff; }
table.data th, table.data td { border: 1px solid var(--c-line); padding: .7rem .8rem; text-align: left; vertical-align: top; }
table.data thead th { background: var(--c-brand); color: #fff; font-weight: 700; }
table.data tbody tr:nth-child(even) { background: var(--c-bg-soft); }
.badge { display: inline-block; font-size: .8rem; font-weight: 700; padding: .15rem .55rem; border-radius: 999px; }
.badge.ok { background: #e2f3e9; color: var(--c-ok); }
.badge.no { background: #fdeaea; color: #c0392b; }

/* ---------- FAQ (native details) ---------- */
.faq details { border: 1px solid var(--c-line); border-radius: var(--radius-sm); margin: .6rem 0; background: #fff; }
.faq summary { cursor: pointer; padding: 1rem 1.1rem; font-weight: 700; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 1.1rem; color: var(--c-brand); font-weight: 800; }
.faq details[open] summary::after { content: "–"; }
.faq .faq-body { padding: 0 1.1rem 1.1rem; color: var(--c-ink-soft); }

/* ---------- Calculator ---------- */
.calc { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 1.6rem; box-shadow: var(--shadow); }
.calc fieldset { border: 0; padding: 0; margin: 0 0 1.2rem; }
.calc legend { font-weight: 700; margin-bottom: .5rem; font-size: 1.05rem; }
.opt { display: block; border: 1px solid var(--c-line); border-radius: var(--radius-sm); padding: .8rem 1rem; margin: .45rem 0; cursor: pointer; }
.opt:hover { border-color: var(--c-brand); background: var(--c-bg-tint); }
.opt input { margin-right: .6rem; }
.calc-result { margin-top: 1rem; padding: 1.3rem; border-radius: var(--radius); font-size: 1.05rem; display: none; }
.calc-result.show { display: block; }
.calc-result.yes { background: #eaf6ef; border: 1px solid #b6dcc5; }
.calc-result.no { background: var(--c-bg-soft); border: 1px solid var(--c-line); }
.calc-result.maybe { background: var(--c-warn-bg); border: 1px solid var(--c-warn-line); }
.calc-result h3 { margin-top: 0; }

/* ---------- Breadcrumb ---------- */
.crumbs { font-size: .9rem; color: var(--c-ink-soft); padding: 1rem 0 0; }
.crumbs a { color: var(--c-ink-soft); }

/* ---------- Article ---------- */
article.prose { max-width: 760px; }
article.prose ul, article.prose ol { padding-left: 1.3rem; }
article.prose li { margin: .4rem 0; }
.toc { background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 1rem 1.2rem; }
.toc strong { display: block; margin-bottom: .4rem; }
.toc ul { margin: 0; padding-left: 1.1rem; }
.source-note { font-size: .9rem; color: var(--c-ink-soft); border-top: 1px solid var(--c-line); margin-top: 2rem; padding-top: 1rem; }

/* ---------- Author / E-E-A-T box ---------- */
.author { display: flex; gap: 1rem; align-items: flex-start; background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 1.1rem; margin: 1.6rem 0; }
.author .avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--c-brand); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 1.2rem; flex: none; }
.author .meta { font-size: .92rem; color: var(--c-ink-soft); }
.author .meta strong { color: var(--c-ink); }

/* ---------- CTA strip ---------- */
.cta-strip { background: var(--c-brand); color: #fff; border-radius: var(--radius); padding: 1.8rem; text-align: center; }
.cta-strip h2 { color: #fff; margin-top: 0; }
.cta-strip p { color: #d7ebef; }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-ink); color: #c4d1d6; margin-top: 3rem; padding: 2.5rem 0 1.5rem; font-size: .94rem; }
.site-footer a { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; }
.site-footer .ft-title { color: #fff; margin: 0 0 .6rem; font-size: 1rem; font-weight: 700; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: .3rem 0; }
.disclosure { border-top: 1px solid #2c3c43; margin-top: 1.6rem; padding-top: 1rem; color: #92a3a9; font-size: .85rem; }

.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: .5rem; background: #fff; padding: .5rem 1rem; z-index: 100; border-radius: 6px; }

/* ---------- Signup (kurz) ---------- */
.signup { display: flex; gap: .6rem; flex-wrap: wrap; }
.signup input[type="email"] { flex: 1; min-width: 220px; padding: .75rem 1rem; border: 1px solid var(--c-line); border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; }
.consent { display: block; margin-top: .8rem; font-size: .88rem; color: var(--c-ink-soft); cursor: pointer; }
.consent input { margin-right: .5rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- Timeline (aktuality) ---------- */
.timeline { list-style: none; margin: 1.5rem 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 4px; bottom: 4px; width: 2px; background: var(--c-line); }
.timeline li { position: relative; padding: 0 0 1.5rem 2.3rem; }
.timeline li::before { content: ""; position: absolute; left: 2px; top: .3rem; width: 14px; height: 14px; border-radius: 50%; background: var(--c-brand); border: 3px solid #fff; box-shadow: 0 0 0 1px var(--c-line); }
.timeline li.future::before { background: #fff; border-color: var(--c-accent); box-shadow: 0 0 0 1px var(--c-accent); }
.timeline .when { font-weight: 800; color: var(--c-brand-dark); display: block; font-size: .9rem; text-transform: uppercase; letter-spacing: .03em; }
.timeline li.future .when { color: var(--c-accent-dark); }
.timeline p { margin: .2rem 0 0; color: var(--c-ink-soft); }

/* ---------- Glossary ---------- */
.glossary dt { font-weight: 750; color: var(--c-brand-dark); margin-top: 1.1rem; scroll-margin-top: 80px; }
.glossary dd { margin: .2rem 0 0; color: var(--c-ink-soft); padding-bottom: .8rem; border-bottom: 1px solid var(--c-line); }
code { background: var(--c-bg-soft); padding: .1rem .35rem; border-radius: 4px; font-size: .9em; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-media { margin: .3rem .8rem 1.6rem 0; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; gap: 0; border-bottom: 1px solid var(--c-line); padding: .5rem 20px 1rem; }
  .nav.open { display: flex; }
  .nav a { padding: .6rem 0; border-bottom: 1px solid var(--c-line); }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}