/* Sekce a komponenty */
.hero { padding-block: var(--space-5) var(--space-4); }
.eyebrow { color: var(--accent); font-family: var(--mono); font-size: 0.85rem; margin-bottom: var(--space-2); }
.hero h1 { font-size: var(--step-3); max-width: 16ch; margin-bottom: var(--space-3); }
.lead { font-size: var(--step-1); color: var(--muted); max-width: 40ch; margin-bottom: var(--space-4); }

.button {
  display: inline-block; text-decoration: none;
  background: var(--ink); color: var(--bg);
  padding: 0.75rem 1.4rem; border-radius: 999px; font-weight: 500;
  transition: opacity 0.15s;
}
.button:hover { opacity: 0.85; }

.section { padding-block: var(--space-5); border-top: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: 1fr 2fr; gap: var(--space-4); }
.section-title { font-size: var(--step-2); }
.prose { max-width: 60ch; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-2); }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: var(--space-3);
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--ink); transform: translateY(-2px); }
.card h3 { font-size: 1.15rem; margin-bottom: var(--space-1); }
.card p { color: var(--muted); font-size: 0.95rem; }
.card :last-child { margin-bottom: 0; }


.link { text-decoration: underline; text-underline-offset: 4px; text-decoration-color: var(--line); transition: text-decoration-color 0.15s, color 0.15s; }
.link:hover { color: var(--accent); text-decoration-color: var(--accent); }
.socials { display: flex; gap: var(--space-3); }

.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.5s, transform 0.5s; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .hero { padding-block: var(--space-4); }
  .section { padding-block: var(--space-4); }
}

.tag { font-family: var(--mono); font-size: 0.8rem; color: var(--accent) !important; margin-bottom: var(--space-1); }

/* Projekty */
.card.featured { grid-column: 1 / -1; }
.card.featured p:not(.tag) { max-width: 68ch; }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: var(--space-2) 0; }
.chips li { border: 1px solid var(--line); border-radius: 999px; padding: 0.15rem 0.75rem; font-size: 0.85rem; color: var(--muted); }

/* HomeLab diagram */
.lab { position: relative; margin-block: var(--space-3) var(--space-4); }
.lab-scroll { overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.lab-map { display: block; width: 100%; height: auto; }
.lab-mobile { display: none; }
@media (max-width: 720px) {
  .lab-desktop { display: none; }
  .lab-mobile { display: block; max-width: 420px; margin-inline: auto; }
}
.lab-map .link-line { stroke: var(--muted); stroke-width: 2; }
.lab-map .link-line.vpn { stroke: var(--accent); stroke-dasharray: 6 6; }
.lab-map .flow { animation: flow 1.2s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -12; } }
.lab-map .link-label { fill: var(--accent); font: 600 14px var(--mono); }

.node { cursor: pointer; outline: none; color: var(--ink); }
.node .box { fill: var(--bg); stroke: var(--line); stroke-width: 1.5; transition: stroke 0.15s; }
.node .icon { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.node .icon .dots circle { fill: currentColor; stroke: none; }
.node .n-name { text-anchor: middle; fill: var(--ink); font: 600 17px var(--font); }
.node .n-sub { text-anchor: middle; fill: var(--muted); font: 400 13px var(--font); }
.node .n-det { text-anchor: middle; fill: var(--accent); font: 500 10.5px var(--mono); }
.lab-map .link-label.lan { fill: var(--muted); }
.node:hover .box, .node:focus-visible .box, .node.is-active .box { stroke: var(--accent); stroke-width: 2; }
.node:hover .icon, .node:focus-visible .icon, .node.is-active .icon { stroke: var(--accent); }

.lab-legend { display: flex; flex-wrap: wrap; gap: 0.4rem var(--space-3); margin-top: var(--space-1); font-size: 0.85rem; color: var(--muted); }
.lab-legend li { display: flex; align-items: center; gap: 0.5rem; }
.lab-legend .muted { margin-left: auto; }
.sw { display: inline-block; width: 22px; height: 0; border-top: 2px solid var(--muted); }
.sw-vpn { border-top: 2px dashed var(--accent); }
@media (max-width: 720px) { .lab-legend .muted { margin-left: 0; width: 100%; } }

.tip {
  position: absolute; z-index: 10; width: min(300px, calc(100% - 16px));
  background: var(--ink); color: var(--bg);
  border-radius: var(--radius); padding: var(--space-2);
  font-size: 0.9rem; line-height: 1.5; pointer-events: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.tip[hidden] { display: none; }
.tip-title { display: block; font-size: 1rem; margin-bottom: 0.25rem; }
.tip-desc { margin: 0 0 var(--space-1); opacity: 0.85; }
.tip-specs { opacity: 0.85; font-family: var(--mono); font-size: 0.8rem; }
.tip-specs li { padding-block: 0.1rem; }

/* Certifikáty */
.cert-tools { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-2); margin-bottom: var(--space-1); }
.chips-filter { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  font: inherit; font-size: 0.9rem; color: var(--muted); cursor: pointer;
  background: none; border: 1px solid var(--line); border-radius: 999px; padding: 0.3rem 1rem;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.chip:hover { color: var(--ink); border-color: var(--ink); }
.chip.is-on, .chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.cert-count { font-size: 0.85rem; margin-bottom: var(--space-2); }

.cert-group { margin-bottom: var(--space-4); }
.cert-group[hidden] { display: none; }
.cert-group-head { display: flex; align-items: baseline; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-2); }
.cert-group-head h3 { font-size: 1.15rem; }
.cert-group-head p { margin: 0; font-size: 0.9rem; }

.cert-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 0.75rem; }
.cert { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color 0.15s, transform 0.15s; }
.cert[hidden] { display: none; }
.cert-btn { all: unset; box-sizing: border-box; display: flex; flex-direction: column; width: 100%; height: 100%; cursor: zoom-in; }
.cert-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.cert-btn .cert-meta { display: block; }
.cert[data-status="done"]:hover { border-color: var(--accent); transform: translateY(-2px); }
.cert-thumb { display: block; aspect-ratio: 16 / 10; overflow: hidden; border-bottom: 1px solid var(--line); background: var(--bg); }
.cert-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.cert-info { padding: 0.6rem 0.75rem 0.75rem; }
.cert-name { display: block; font-weight: 600; color: var(--ink); margin: 0 0 0.15rem; font-size: 0.9rem; line-height: 1.3; }
.cert-meta { margin: 0; font-size: 0.78rem; line-height: 1.4; color: var(--muted); }

/* Detail certifikátu */
.cert img, .cert-dialog img { -webkit-user-drag: none; user-select: none; -webkit-touch-callout: none; }
.cert-dialog { border: 1px solid var(--line); border-radius: var(--radius); padding: 0; background: var(--surface); color: var(--ink); width: min(1000px, calc(100% - 24px)); max-height: calc(100dvh - 24px); overflow: auto; }
.cert-dialog::backdrop { background: rgba(0, 0, 0, 0.7); }
.cert-dialog form { position: sticky; top: 0; display: flex; justify-content: flex-end; padding: var(--space-1); z-index: 2; pointer-events: none; }
.cert-close { pointer-events: auto; font: inherit; font-size: 0.9rem; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 0.3rem 1rem; cursor: pointer; }
.cert-close:hover { border-color: var(--ink); }
.cert-dialog-body { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-3); padding: 0 var(--space-3) var(--space-3); margin-top: -2.2rem; }
.cert-figure { margin: 0; align-self: start; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.cert-figure img { display: block; width: 100%; height: auto; max-height: 80dvh; object-fit: contain; }
.cert-text { padding-top: var(--space-4); }
.cert-text h3 { font-size: 1.4rem; margin-bottom: 0.4rem; }
.cert-text h4 { margin: var(--space-3) 0 0.4rem; font-size: 0.8rem; font-family: var(--mono); font-weight: 500; color: var(--accent); text-transform: uppercase; letter-spacing: 0.04em; }
.cert-text ul { color: var(--muted); }
.cert-text li { padding-block: 0.2rem; }
@media (max-width: 720px) {
  .cert-dialog-body { grid-template-columns: 1fr; margin-top: 0; }
  .cert-text { padding-top: 0; }
}

/* O mně: rychlá fakta */
.facts { margin: var(--space-3) 0 0; max-width: 60ch; border-top: 1px solid var(--line); }
.facts div { display: grid; grid-template-columns: 9rem 1fr; gap: var(--space-2); padding-block: 0.8rem; border-bottom: 1px solid var(--line); }
.facts dt { color: var(--muted); font-size: 0.9rem; }
.facts dd { margin: 0; }
@media (max-width: 720px) { .facts div { grid-template-columns: 1fr; gap: 0.1rem; } }

/* Hero: tři fakta */
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin-top: var(--space-5); padding-top: var(--space-3); border-top: 1px solid var(--line); }
.hero-facts li { display: flex; flex-direction: column; gap: 0.25rem; }
.fact-label { color: var(--muted); font-family: var(--mono); font-size: 0.8rem; }
.fact-value { font-size: var(--step-1); font-weight: 600; letter-spacing: -0.01em; line-height: 1.25; }
@media (max-width: 720px) {
  .hero-facts { grid-template-columns: 1fr; gap: var(--space-2); margin-top: var(--space-4); }
}

@media (max-width: 480px) { .cert-list { grid-template-columns: repeat(2, 1fr); } }

/* Stránka 404 */
.not-found { min-height: calc(100dvh - var(--header-h) - 80px); display: flex; align-items: center; }