/* cloud.up4.cz – dark theme, green accent */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f1117;
  --bg-card:     #181c24;
  --bg-elevated: #1e2330;
  --border:      #2a2f3d;
  --text:        #e2e5ee;
  --text-muted:  #7a8299;
  --accent:      #3ddc84;
  --accent-dim:  #2aac62;
  --radius:      10px;
  --radius-lg:   16px;
  --font:        'Inter', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', monospace;
  --header-h:    64px;
  --max-w:       1200px;
  --max-w-narrow:720px;
  --transition:  .2s ease;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.65; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dim); }
img { display: block; max-width: 100%; height: auto; }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.container--narrow { max-width: var(--max-w-narrow); }
.site-main { padding: 2.5rem 0 5rem; min-height: calc(100vh - var(--header-h) - 200px); }

/* ── header ──────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(15,17,23,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { height: 100%; display: flex; align-items: center; gap: 1.5rem; }
.logo { display: flex; align-items: center; gap: .6rem; color: var(--text); flex-shrink: 0; }
.logo:hover { color: var(--text); }
.logo-mark { width: 32px; height: 32px; background: var(--accent); color: var(--bg); font-weight: 800; font-size: .95rem; border-radius: 8px; display: grid; place-items: center; }
.logo-text { font-weight: 600; font-size: 1rem; }
.logo-text em { color: var(--accent); font-style: normal; }
.nav-main { display: flex; align-items: center; gap: .25rem; margin-left: auto; }
.nav-link { padding: .4rem .75rem; border-radius: 6px; font-size: .875rem; color: var(--text-muted); transition: color var(--transition), background var(--transition); white-space: nowrap; }
.nav-link:hover, .nav-link.is-active { color: var(--text); background: var(--bg-elevated); }
.nav-link.is-active { color: var(--accent); }
.search-form { display: flex; align-items: center; }
.search-input { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 6px; padding: .4rem .75rem; color: var(--text); font-size: .875rem; width: 180px; transition: border-color var(--transition), width var(--transition); }
.search-input:focus { outline: none; border-color: var(--accent); width: 220px; }
.search-btn { background: none; border: none; cursor: pointer; color: var(--text-muted); padding: .4rem; transition: color var(--transition); }
.search-btn:hover { color: var(--accent); }
.nav-toggle { display: none; }

/* ── filter header ───────────────────────────────────────── */
.filter-header { padding: 2rem 0 1.5rem; border-bottom: 1px solid var(--border); margin-bottom: 2rem; }
.filter-label { display: inline-block; font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-right: .5rem; }
.filter-title { font-size: 1.75rem; font-weight: 700; }
.filter-desc { color: var(--text-muted); margin-top: .5rem; }
.back-link { font-size: .875rem; color: var(--text-muted); display: inline-block; margin-bottom: .75rem; }
.back-link:hover { color: var(--accent); }

/* ── article grid ────────────────────────────────────────── */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px,1fr)); gap: 1.5rem; margin-bottom: 3rem; }

/* ── card ────────────────────────────────────────────────── */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; transition: border-color var(--transition), transform var(--transition); }
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card-img-link { position: relative; display: block; aspect-ratio: 16/9; overflow: hidden; }
.card-img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.card:hover .card-img { transform: scale(1.04); }
.card-img--placeholder { width: 100%; height: 100%; background: var(--bg-elevated); }
.card-img--error { display: none !important; }
.card-category { position: absolute; top: .75rem; left: .75rem; background: var(--accent); color: var(--bg); font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: .25rem .6rem; border-radius: 4px; }
.card-body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; gap: .5rem; }
.card-title { font-size: 1.05rem; font-weight: 600; line-height: 1.35; }
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--accent); }
.card-excerpt { font-size: .875rem; color: var(--text-muted); flex: 1; }
.card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-top: auto; }
.card-meta time { font-size: .8rem; color: var(--text-muted); }
.card-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.tag { display: inline-block; font-size: .75rem; padding: .2rem .5rem; border-radius: 4px; background: var(--bg-elevated); border: 1px solid var(--border); color: var(--text-muted); transition: border-color var(--transition), color var(--transition); }
.tag:hover { border-color: var(--accent); color: var(--accent); }

/* ── pagination ──────────────────────────────────────────── */
.pagination { display: flex; align-items: center; justify-content: center; gap: 1rem; margin: 2rem 0; }
.pagination-btn { padding: .5rem 1.25rem; border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-muted); font-size: .875rem; transition: border-color var(--transition), color var(--transition); }
.pagination-btn:hover { border-color: var(--accent); color: var(--accent); }
.pagination-info { color: var(--text-muted); font-size: .875rem; }

/* ── breadcrumbs ─────────────────────────────────────────── */
.breadcrumbs { margin-bottom: 1.25rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; list-style: none; font-size: .8rem; line-height: 1.4; }
.breadcrumbs li { display: flex; align-items: center; color: var(--text-muted); }
.breadcrumbs li:not(:last-child)::after { content: '/'; margin: 0 .55rem; color: var(--border); }
.breadcrumbs a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs li[aria-current="page"] { color: var(--text); font-weight: 500; max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── article hero ────────────────────────────────────────── */
.article-hero { position: relative; border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 2rem; aspect-ratio: 16/7; }
.article-hero__img { width: 100%; height: 100%; object-fit: cover; }
.article-hero__img--placeholder { width: 100%; height: 100%; background: var(--bg-elevated); }
.article-hero--noimg { aspect-ratio: auto; min-height: 200px; background: var(--bg-elevated); }
.article-hero__overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.85) 0%, rgba(0,0,0,.2) 60%, transparent 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 2rem; }
.article-category { display: inline-block; background: var(--accent); color: var(--bg); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: .3rem .7rem; border-radius: 4px; margin-bottom: .75rem; width: fit-content; }
.article-title { font-size: clamp(1.5rem,4vw,2.25rem); font-weight: 800; line-height: 1.2; color: #fff; }
.article-meta { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; color: rgba(255,255,255,.65); font-size: .85rem; margin-top: .75rem; }
.article-meta__update { opacity: .7; }
.article-meta__views::before { content: '· '; }
.article-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 2rem; }

/* ── article content ─────────────────────────────────────── */
.article-content { font-size: 1.05rem; line-height: 1.8; }
.article-content h2 { font-size: 1.5rem; margin: 2.5rem 0 1rem; }
.article-content h3 { font-size: 1.2rem; margin: 2rem 0 .75rem; }
.article-content p  { margin-bottom: 1.25rem; }
.article-content a  { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-content img { border-radius: var(--radius); margin: 1.5rem 0; }
.article-content ul, .article-content ol { margin: .75rem 0 1.25rem 1.5rem; padding-left: .5rem; }
.article-content li { margin-bottom: .3rem; }
.article-content li::marker { color: var(--accent); }
.article-content blockquote { border-left: 3px solid var(--accent); padding: .75rem 1.25rem; margin: 1.5rem 0; color: var(--text-muted); background: var(--bg-card); border-radius: 0 var(--radius) var(--radius) 0; }
.article-content code { font-family: var(--font-mono); font-size: .875em; background: var(--bg-elevated); padding: .15em .4em; border-radius: 4px; }
.article-content pre { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; overflow-x: auto; margin: 1.5rem 0; }
.article-content pre code { background: none; padding: 0; }

/* ── reactions ───────────────────────────────────────────── */
.reactions {
  margin: 2.5rem 0;
  padding: 1.75rem 2rem;
  background: linear-gradient(135deg, #1a1f2e 0%, #161b28 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.reactions::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(61,220,132,.07) 0%, transparent 65%);
  pointer-events: none;
}
.reactions__title {
  font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}
.reactions__inner { display: flex; flex-wrap: wrap; gap: .75rem; position: relative; }

.reaction-btn {
  display: inline-flex; flex-direction: column; align-items: center; gap: .3rem;
  padding: .9rem 1.4rem;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  background: rgba(255,255,255,.04);
  color: var(--text);
  font-family: var(--font);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
  user-select: none;
  min-width: 90px;
  position: relative;
}
.reaction-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(61,220,132,.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.reaction-btn:hover {
  border-color: var(--accent);
  background: rgba(61,220,132,.08);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(61,220,132,.15);
}
.reaction-btn:hover::after { opacity: 1; }
.reaction-btn:active { transform: translateY(-1px); }

.reaction-btn.is-voted {
  border-color: var(--accent);
  background: rgba(61,220,132,.14);
  box-shadow: 0 0 0 1px rgba(61,220,132,.3), 0 4px 16px rgba(61,220,132,.2);
}
.reaction-btn.is-voted::after { opacity: 1; }

.reaction-btn__emoji {
  font-size: 1.75rem;
  line-height: 1;
  display: block;
  transition: transform var(--transition);
}
.reaction-btn:hover .reaction-btn__emoji { transform: scale(1.2); }
.reaction-btn.is-voted .reaction-btn__emoji { transform: scale(1.15); }

.reaction-btn__label {
  font-size: .78rem; font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
  white-space: nowrap;
}
.reaction-btn:hover .reaction-btn__label,
.reaction-btn.is-voted .reaction-btn__label { color: var(--accent); }

.reaction-btn__count {
  font-size: .85rem; font-weight: 700;
  color: var(--accent);
  min-height: 1.2em;
  transition: transform var(--transition);
}
.reaction-btn.is-voted .reaction-btn__count { transform: scale(1.1); }

/* ── donate ──────────────────────────────────────────────── */
.donate {
  margin: 2.5rem 0;
  padding: 1.75rem 2rem;
  background: linear-gradient(135deg, #1a1f2e 0%, #161b28 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.donate::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 100% 0%, rgba(61,220,132,.07) 0%, transparent 65%);
  pointer-events: none;
}
.donate__inner {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  position: relative;
}
.donate__text { flex: 1; min-width: 0; }
.donate__title {
  font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-muted);
  margin: 0 0 .6rem;
}
.donate__msg { font-size: 1rem; line-height: 1.6; margin: 0; }
.donate__qr {
  flex-shrink: 0;
  background: #fff;
  padding: .6rem;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.donate__qr img { display: block; width: 140px; height: 140px; border-radius: 4px; }

@media (max-width: 560px) {
  .donate__inner { flex-direction: column; text-align: center; }
}

/* ── section title ───────────────────────────────────────── */
.section-title { font-size: 1.2rem; font-weight: 700; margin: 3rem 0 1.25rem; padding-bottom: .6rem; border-bottom: 1px solid var(--border); }

/* ── gallery grid ────────────────────────────────────────── */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: .5rem; }
.gallery-grid--full { grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); }
.gallery-item { aspect-ratio: 1; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--border); transition: border-color var(--transition); }
.gallery-item:hover { border-color: var(--accent); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.gallery-item:hover img { transform: scale(1.06); }

/* ── gallery albums ──────────────────────────────────────── */
.gallery-albums { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 1.25rem; }
.gallery-albums--sub { margin-bottom: 2.5rem; }
.album-card { display: block; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); background: var(--bg-card); transition: border-color var(--transition), transform var(--transition); }
.album-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.album-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.album-card__placeholder { width: 100%; aspect-ratio: 4/3; background: var(--bg-elevated); display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: 700; color: var(--accent); }
.album-card__info { padding: .85rem 1rem; display: flex; justify-content: space-between; align-items: center; }
.album-card__name { font-weight: 600; color: var(--text); }
.album-card__count { font-size: .8rem; color: var(--text-muted); }

/* ── gallery breadcrumb ──────────────────────────────────── */
.gallery-breadcrumb { display: flex; align-items: center; gap: .4rem; font-size: .85rem; margin-bottom: .75rem; flex-wrap: wrap; }
.breadcrumb-link { color: var(--text-muted); }
.breadcrumb-link:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--border); }
.breadcrumb-current { color: var(--text); font-weight: 600; }

/* ── related ─────────────────────────────────────────────── */
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: 1rem; }
.related-card { display: flex; flex-direction: column; gap: .5rem; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: var(--bg-card); transition: border-color var(--transition); }
.related-card:hover { border-color: var(--accent); }
.related-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.related-card__title { padding: .5rem .75rem .75rem; font-size: .85rem; font-weight: 600; color: var(--text); }

/* ── comments ────────────────────────────────────────────── */
.comment-list { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 2rem; }
.comment { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; }
.comment__author { font-weight: 600; color: var(--accent); margin-bottom: .2rem; }
.comment__date { font-size: .8rem; color: var(--text-muted); display: block; margin-bottom: .6rem; }
.comment__text { font-size: .9rem; line-height: 1.6; }
.comment-form-wrap { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem; margin-top: 1.5rem; }
.comment-form-wrap h3 { margin-bottom: 1.25rem; font-size: 1rem; }
.form-row { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1rem; }
.form-row label { font-size: .85rem; color: var(--text-muted); }
.form-row input, .form-row textarea { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: .6rem .9rem; color: var(--text); font-family: var(--font); font-size: .9rem; transition: border-color var(--transition); }
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--accent); }
.form-row textarea { resize: vertical; min-height: 100px; }
.comment-error { background: rgba(220,60,60,.12); border: 1px solid rgba(220,60,60,.35); color: #f87171; border-radius: var(--radius); padding: .75rem 1rem; margin-bottom: 1rem; font-size: .9rem; }
.comment-disabled { color: var(--text-muted); font-style: italic; padding: 1rem 0; }

/* ── buttons ─────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .6rem 1.4rem; border-radius: var(--radius); font-size: .9rem; font-weight: 600; border: none; cursor: pointer; transition: background var(--transition), transform var(--transition); }
.btn--primary { background: var(--accent); color: var(--bg); }
.btn--primary:hover { background: var(--accent-dim); color: var(--bg); transform: translateY(-1px); }

/* ── lightbox ────────────────────────────────────────────── */
.lightbox-overlay { position: fixed; inset: 0; z-index: 999; background: rgba(0,0,0,.92); display: none; place-items: center; cursor: pointer; }
.lightbox-overlay.is-visible { display: grid; }
.lightbox-inner { position: relative; max-width: 92vw; max-height: 92vh; cursor: default; }
.lightbox-img { max-width: 92vw; max-height: 85vh; object-fit: contain; border-radius: var(--radius); display: block; }
.lightbox-close { position: absolute; top: -2.5rem; right: 0; background: none; border: none; color: #fff; cursor: pointer; opacity: .7; transition: opacity var(--transition); }
.lightbox-close:hover { opacity: 1; }
.lightbox-prev, .lightbox-next { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(0,0,0,.55); border: 1px solid rgba(255,255,255,.15); border-radius: 50%; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; color: #fff; cursor: pointer; transition: background var(--transition), opacity var(--transition); z-index: 2; }
.lightbox-prev { left: -64px; }
.lightbox-next { right: -64px; }
.lightbox-prev:hover, .lightbox-next:hover { background: rgba(0,0,0,.85); }
.lightbox-counter { position: absolute; bottom: -2rem; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.6); font-size: .85rem; white-space: nowrap; }
@media (max-width: 900px) { .lightbox-prev { left: .5rem; } .lightbox-next { right: .5rem; } }

/* ── cat-children ────────────────────────────────────────── */
.cat-children { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; margin-top: 1.5rem; }
@media (max-width: 900px) { .cat-children { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 600px) { .cat-children { grid-template-columns: repeat(2,1fr); } }
.cat-child-card { display: flex; flex-direction: column; align-items: center; gap: .6rem; text-decoration: none; }
.cat-child-card__img-wrap { width: 100%; aspect-ratio: 1; border-radius: var(--radius); overflow: hidden; border: 2px solid var(--border); background: var(--bg-elevated); transition: border-color var(--transition); }
.cat-child-card:hover .cat-child-card__img-wrap { border-color: var(--accent); }
.cat-child-card__img-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.cat-child-card__placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.cat-child-card__name { font-size: .8rem; font-weight: 600; color: var(--text-muted); text-align: center; transition: color var(--transition); }
.cat-child-card:hover .cat-child-card__name { color: var(--accent); }

/* ── misc ────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 4rem 1rem; color: var(--text-muted); }
.notice { color: var(--text-muted); margin-top: .5rem; }

/* ── footer ──────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); padding: 2.5rem 0 1.5rem; color: var(--text-muted); font-size: .875rem; }
.footer-cols { display: flex; gap: 3rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.footer-brand { display: block; font-weight: 700; color: var(--text); margin-bottom: .4rem; }
.footer-nav { display: flex; flex-direction: column; gap: .35rem; }
.footer-nav a { color: var(--text-muted); }
.footer-nav a:hover { color: var(--accent); }
.footer-copy { opacity: .5; }

/* ── responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --header-h: 56px; }
  .nav-main { display: none; flex-direction: column; align-items: flex-start; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--bg-card); border-bottom: 1px solid var(--border); padding: 1rem; gap: .25rem; }
  .nav-main.is-open { display: flex; }
  .nav-toggle { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: .4rem; margin-left: auto; }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-muted); border-radius: 2px; }
  .search-form { display: none; }
  .article-grid { grid-template-columns: 1fr; }
  .article-hero { aspect-ratio: 4/3; }
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(120px,1fr)); }
  .reactions { padding: 1.25rem; }
  .reactions__inner { gap: .5rem; }
  .reaction-btn { min-width: 70px; padding: .75rem 1rem; }
  .reaction-btn__emoji { font-size: 1.4rem; }
  .reaction-btn__label { font-size: .72rem; }
}

/* ── reaction bump animace ───────────────────────────────── */
@keyframes reaction-bump {
  0%   { transform: translateY(-3px) scale(1); }
  30%  { transform: translateY(-6px) scale(1.12); }
  60%  { transform: translateY(-2px) scale(0.96); }
  100% { transform: translateY(-3px) scale(1); }
}
.reaction-btn.is-bumping {
  animation: reaction-bump 350ms cubic-bezier(.36,.07,.19,.97);
}