/* ============================================================
   blog.perny.eu – Hlavní CSS (černo-bílý minimalistický styl)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Proměnné (design tokeny) --- */
:root {
  --black:    #080808;
  --bg:       #0d0d0d;
  --bg2:      #141414;
  --bg3:      #1c1c1c;
  --border:   #252525;
  --border2:  #333333;
  --muted:    #666666;
  --mid:      #999999;
  --light:    #cccccc;
  --white:    #f2f2f2;
  --pure:     #ffffff;

  --accent:   #e8e8e8;
  --red:      #e03030;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', 'Courier New', monospace;

  --radius:   2px;
  --gap:      clamp(16px, 3vw, 32px);
  --max-w:    1200px;
  --content-w: 760px;
  --transition: 200ms ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg);
  color: var(--light);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* --- Typografie --- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--white);
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin: 2rem 0 1rem; }
h3 { font-size: 1.3rem; margin: 1.5rem 0 .75rem; }
p  { margin-bottom: 1.2rem; color: var(--light); }
small { font-size: .8rem; color: var(--muted); }

/* --- Utility --- */
.container  { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gap); }
.sr-only    { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.text-muted { color: var(--muted); }
.text-mid   { color: var(--mid); }
.badge {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border: 1px solid var(--border2);
  color: var(--mid);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.badge:hover { border-color: var(--white); color: var(--white); }

/* --- Navbar --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,8,8,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 2rem;
}
.navbar-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -.02em;
}
.navbar-logo span { color: var(--muted); }
.navbar-nav {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.navbar-nav a {
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--transition);
}
.navbar-nav a:hover,
.navbar-nav a.active { color: var(--white); }

.navbar-search {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 12px;
  transition: border-color var(--transition);
}
.navbar-search:focus-within { border-color: var(--border2); }
.navbar-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: .85rem;
  width: 160px;
}
.navbar-search input::placeholder { color: var(--muted); }
.navbar-search svg { color: var(--muted); width: 14px; }

.navbar-toggle { display: none; background: none; border: none; color: var(--white); }

/* --- Hero (úvodní featured) --- */
.hero {
  position: relative;
  height: clamp(400px, 60vh, 700px);
  overflow: hidden;
  background: var(--bg2);
}
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(.45);
  transition: transform 8s ease;
}
.hero:hover .hero-img { transform: scale(1.03); }
.hero-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(24px, 5vw, 60px);
  background: linear-gradient(to top, rgba(8,8,8,.95) 0%, rgba(8,8,8,.4) 60%, transparent 100%);
}
.hero-category { margin-bottom: 1rem; }
.hero-title {
  font-size: clamp(1.8rem, 4.5vw, 3.5rem);
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--pure);
  max-width: 800px;
  margin-bottom: .75rem;
  text-shadow: 0 2px 20px rgba(0,0,0,.6);
}
.hero-excerpt {
  color: var(--accent);
  max-width: 600px;
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  line-height: 1.6;
}
.hero-meta { display: flex; gap: 1.5rem; align-items: center; }
.hero-meta span { font-size: .8rem; color: var(--mid); }

/* --- Tlačítka --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: 10px 22px;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn-primary:hover { background: var(--pure); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--border2);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.05); }
.btn-sm { padding: 6px 14px; font-size: .78rem; }

/* --- Article grid --- */
.section { padding: clamp(48px, 8vw, 96px) 0; }
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--white);
}
.section-link { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.section-link:hover { color: var(--white); }

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5px;
  background: var(--border);
}

/* --- Article card --- */
.card {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  transition: background var(--transition);
}
.card:hover { background: var(--bg2); }
.card-img-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg2);
}
.card-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: transform .4s ease, filter .4s ease;
}
.card:hover .card-img { transform: scale(1.04); filter: grayscale(0%); }
.card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.card-category { margin-bottom: .75rem; }
.card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: .6rem;
  transition: color var(--transition);
}
.card:hover .card-title { color: var(--pure); }
.card-excerpt {
  font-size: .88rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.2rem;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: .75rem;
}
.card-meta-left { display: flex; gap: 1rem; }

/* Velká karta (featured) */
.card-featured { grid-column: 1/-1; flex-direction: row; }
.card-featured .card-img-wrap {
  aspect-ratio: auto;
  flex: 0 0 55%;
  min-height: 280px;
}
.card-featured .card-body { padding: 2.5rem; justify-content: center; }
.card-featured .card-title { font-size: 1.6rem; }

/* --- Article detail --- */
.article-hero {
  height: clamp(300px, 45vh, 540px);
  overflow: hidden;
  position: relative;
  background: var(--bg2);
}
.article-hero img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(.5);
}
.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg) 0%, rgba(8,8,8,.5) 50%, transparent 100%);
}
.article-hero-content {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: clamp(20px, 4vw, 48px);
  max-width: calc(var(--content-w) + 2 * var(--gap));
  margin: 0 auto;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr min(var(--content-w), 100%) 1fr;
  gap: 0;
}
.article-layout > * { grid-column: 2; }
.article-layout > .full-bleed { grid-column: 1/-1; }

.article-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.article-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1rem;
}
.article-excerpt {
  font-size: 1.1rem;
  color: var(--mid);
  font-weight: 300;
  line-height: 1.6;
  max-width: 680px;
}

/* TOC */
.toc {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
}
.toc-title {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.toc ol { padding-left: 1.2rem; }
.toc li { margin: .4rem 0; }
.toc a { font-size: .88rem; color: var(--muted); transition: color var(--transition); }
.toc a:hover { color: var(--white); }
.toc .level-3 { margin-left: 1.2rem; }

/* Obsah článku */
.prose { color: var(--light); }
.prose h2 {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  color: var(--white);
  margin: 2.5rem 0 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.prose h3 { font-size: 1.25rem; color: var(--white); margin: 2rem 0 .75rem; }
.prose p { color: var(--light); margin-bottom: 1.3rem; }
.prose img {
  width: 100%; margin: 2rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.prose a { color: var(--mid); border-bottom: 1px solid var(--border2); padding-bottom: 1px; transition: color var(--transition); }
.prose a:hover { color: var(--white); border-color: var(--white); }
.prose code {
  font-family: var(--font-mono);
  font-size: .85em;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 2px;
  color: var(--accent);
}
.prose pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.prose pre code { background: none; border: none; padding: 0; }
.prose blockquote {
  border-left: 3px solid var(--border2);
  padding: .5rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--muted);
  font-style: italic;
}
.prose ul, .prose ol { margin: 1rem 0 1.3rem 1.5rem; }
.prose li { margin: .4rem 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
.prose th {
  text-align: left;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border2);
  padding: .75rem 1rem;
}
.prose td { padding: .75rem 1rem; border-bottom: 1px solid var(--border); font-size: .92rem; }
.prose tr:hover td { background: var(--bg2); }

/* AI badge */
.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: var(--radius);
}

/* Spec tabulka produktu */
.product-box {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  margin: 2rem 0;
}
.product-box h3 { font-size: 1rem; color: var(--muted); margin: 0 0 1rem; }
.product-rating {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1rem;
}
.stars { color: var(--white); letter-spacing: .1em; }

/* --- Kategorie stránka --- */
.category-header {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
.category-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.category-title { font-size: clamp(2rem, 4vw, 3rem); color: var(--white); }
.category-desc  { color: var(--muted); margin-top: .75rem; max-width: 500px; }

/* Kategorie mini mřížka */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  margin: 3rem 0;
}
.category-card {
  background: var(--bg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  transition: background var(--transition);
}
.category-card:hover { background: var(--bg2); }
.category-card-icon { font-size: 1.5rem; }
.category-card-name { font-weight: 600; color: var(--white); font-size: .92rem; }
.category-card-count { font-size: .75rem; color: var(--muted); }

/* --- Stránka O blogu --- */
.about-section { padding: 5rem 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-photo {
  aspect-ratio: 4/5;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.about-photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(20%); }
.about-label {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.about-name {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--white);
  margin-bottom: 1.5rem;
}
.about-bio { color: var(--mid); line-height: 1.8; margin-bottom: 2rem; }

/* Media kit stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin: 3rem 0;
}
.stat-card {
  background: var(--bg2);
  padding: 2rem;
  text-align: center;
}
.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--white);
  font-weight: 600;
}
.stat-label { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-top: .5rem; }

/* --- Paginace --- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .5rem;
  margin: 4rem 0;
}
.page-btn {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .85rem;
  color: var(--muted);
  transition: all var(--transition);
}
.page-btn:hover, .page-btn.active {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--white);
  margin-bottom: 1rem;
}
.footer-desc { font-size: .85rem; color: var(--muted); line-height: 1.7; }
.footer-heading {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.footer-links { list-style: none; }
.footer-links li { margin: .4rem 0; }
.footer-links a { font-size: .85rem; color: var(--muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .78rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

/* --- Flash zpráva --- */
.flash {
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: .9rem;
  border: 1px solid;
}
.flash-success { background: rgba(50,180,80,.1); border-color: rgba(50,180,80,.3); color: #5dd87a; }
.flash-error   { background: rgba(220,50,50,.1);  border-color: rgba(220,50,50,.3);  color: #e06060; }
.flash-info    { background: rgba(80,130,230,.1); border-color: rgba(80,130,230,.3); color: #7aa8e8; }

/* --- Formuláře --- */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .5rem;
}
.form-control {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: .92rem;
  color: var(--white);
  transition: border-color var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--border2); }
.form-control::placeholder { color: var(--muted); }
textarea.form-control { resize: vertical; min-height: 120px; }

/* --- Loading spinner --- */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border2);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Responsive --- */
@media (max-width: 900px) {
  .card-featured { flex-direction: column; }
  .card-featured .card-img-wrap { flex: none; min-height: 220px; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .navbar-nav { display: none; }
  .navbar-search { display: none; }
  .navbar-toggle { display: block; }
  .article-grid { grid-template-columns: 1fr; gap: 0; }
  .footer-inner { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .navbar-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem var(--gap);
    gap: 1.5rem;
  }
}

/* --- Animace příchodu --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp .5s ease both; }
.fade-up-d1 { animation-delay: .1s; }
.fade-up-d2 { animation-delay: .2s; }
.fade-up-d3 { animation-delay: .3s; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }