/* ================================================
   SrovnejChat.cz — Global Stylesheet
   ================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --color-primary: #1a56db;
  --color-primary-hover: #1648b8;
  --color-primary-light: rgba(26, 86, 219, 0.08);
  --color-primary-fg: #ffffff;
  --color-accent: #0ea5e9;
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-fg: #0f172a;
  --color-fg-muted: #64748b;
  --color-border: #e2e8f0;
  --color-secondary: #f1f5f9;
  --color-secondary-fg: #1e293b;
  --color-green: #16a34a;
  --color-red: #dc2626;
  --color-amber: #d97706;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --max-w: 80rem;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-fg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
table { border-collapse: collapse; width: 100%; }
ul, ol { list-style: none; }

/* --- Utility --- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1rem; }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* --- Header --- */
.site-header {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}
.logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.logo span { color: var(--color-fg); }
.nav-desktop { display: none; gap: 0.25rem; }
@media (min-width: 768px) { .nav-desktop { display: flex; } }
.nav-desktop a {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-fg-muted);
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.nav-desktop a:hover, .nav-desktop a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.burger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
}
.burger svg { width: 1.25rem; height: 1.25rem; color: var(--color-fg); }
@media (min-width: 768px) { .burger { display: none; } }

/* Mobile menu */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 1rem 1rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 0.75rem 0.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-fg-muted);
  border-bottom: 1px solid var(--color-border);
  transition: color 0.15s;
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--color-primary); }

/* --- Footer --- */
.site-footer {
  background: var(--color-fg);
  color: rgba(255,255,255,0.7);
  margin-top: auto;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 3rem 0;
}
@media (min-width: 768px) { .footer-inner { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; margin-top: 0.75rem; }
.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.875rem;
  padding: 0.25rem 0;
  transition: color 0.15s;
}
.footer-col a:hover { color: #ffffff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.5rem 0;
  font-size: 0.8125rem;
  text-align: center;
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--color-fg-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--color-border); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all 0.15s;
  text-align: center;
  justify-content: center;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-fg);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-outline {
  background: var(--color-card);
  color: var(--color-fg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.btn-outline:hover { background: var(--color-secondary); }

/* --- Cards --- */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.card:hover, a.card:hover {
  border-color: rgba(26,86,219,0.3);
  box-shadow: var(--shadow-md);
}

/* --- Section helpers --- */
.section { padding: 4rem 0; }
.section-alt { background: var(--color-card); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.section-title {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-fg);
  text-wrap: balance;
}
.section-subtitle {
  margin-top: 1rem;
  color: var(--color-fg-muted);
  line-height: 1.7;
  text-wrap: pretty;
}
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-fg-muted); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* --- Grids --- */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-5 { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px) { .grid-5 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(5, 1fr); }
}

/* --- Hero --- */
.hero {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(26,86,219,0.05), transparent 70%);
}
.hero-inner {
  position: relative;
  padding: 4rem 0 4rem;
  text-align: center;
  max-width: 48rem;
  margin: 0 auto;
}
@media (min-width: 1024px) { .hero-inner { padding: 6rem 0 5rem; } }
.hero-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  text-wrap: balance;
}
@media (min-width: 1024px) { .hero h1 { font-size: 3rem; } }
.hero-desc {
  margin-top: 1.5rem;
  font-size: 1.125rem;
  color: var(--color-fg-muted);
  line-height: 1.7;
  text-wrap: pretty;
}
.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
}
@media (min-width: 640px) { .hero-actions { flex-direction: row; justify-content: center; } }

/* --- App icon image --- */
.app-icon {
  display: block;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-xl);
  flex-shrink: 0;
  object-fit: contain;
}
.app-icon.sm { width: 2rem; height: 2rem; border-radius: var(--radius); }
.app-icon.lg { width: 3.5rem; height: 3.5rem; }
.app-icon.xl { width: 4rem; height: 4rem; }

/* --- Icon utility --- */
.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
  flex-shrink: 0;
}
.icon-box svg { width: 1.25rem; height: 1.25rem; }

/* --- Feature table --- */
.feature-table-wrap { overflow-x: auto; margin-top: 1.5rem; }
.feature-table {
  width: 100%;
  min-width: 640px;
  font-size: 0.875rem;
}
.feature-table th {
  padding: 0.75rem 1rem;
  text-align: center;
  font-weight: 600;
  color: var(--color-fg);
  border-bottom: 2px solid var(--color-border);
}
.feature-table th:first-child { text-align: left; }
.feature-table td {
  padding: 0.625rem 1rem;
  text-align: center;
  color: var(--color-fg);
}
.feature-table td:first-child {
  text-align: left;
  font-weight: 500;
}
.feature-table tr:nth-child(even) { background: rgba(241,245,249,0.5); }
.feature-table th a { color: var(--color-fg); }
.feature-table th a:hover { color: var(--color-primary); }

/* Icons in table */
.icon-yes { color: var(--color-green); }
.icon-no { color: var(--color-red); opacity: 0.6; }
.icon-partial { color: var(--color-fg-muted); }

/* --- Tags --- */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.tag-primary { background: var(--color-primary-light); color: var(--color-primary); }
.tag-secondary { background: var(--color-secondary); color: var(--color-secondary-fg); }

/* --- Rank badge --- */
.rank {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 9999px;
  background: var(--color-primary-light);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --- Link arrow --- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color 0.15s;
}
.link-arrow:hover { color: var(--color-primary-hover); }
.link-arrow svg { width: 1rem; height: 1rem; }

/* --- FAQ (Accordion) --- */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-card);
  overflow: hidden;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-align: left;
  color: var(--color-fg);
  cursor: pointer;
  transition: background 0.15s;
}
.faq-q:hover { background: var(--color-secondary); }
.faq-q svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-fg-muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.faq-item.open .faq-q svg { transform: rotate(180deg); }
.faq-a {
  display: none;
  padding: 0 1.25rem 1rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-fg-muted);
}
.faq-item.open .faq-a { display: block; }

/* --- Article prose --- */
.prose p { margin-top: 1rem; line-height: 1.7; color: var(--color-fg-muted); }
.prose p:first-child { font-size: 1.125rem; }
.prose h2 {
  margin-top: 2.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-fg);
}
.prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.prose a:hover { color: var(--color-primary-hover); }
.prose table { margin-top: 1.5rem; }

/* --- Pros / Cons --- */
.pro-con-grid { display: grid; gap: 1.5rem; }
@media (min-width: 768px) { .pro-con-grid { grid-template-columns: repeat(2, 1fr); } }
.pro-item, .con-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  line-height: 1.6;
}
.pro-item svg { color: var(--color-green); flex-shrink: 0; margin-top: 0.125rem; }
.con-item svg { color: var(--color-red); opacity: 0.6; flex-shrink: 0; margin-top: 0.125rem; }

/* --- Availability dots --- */
.avail-grid { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1rem; }
.avail-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 500;
}
.avail-yes { background: rgba(22,163,74,0.08); color: var(--color-green); }
.avail-no { background: rgba(220,38,38,0.08); color: var(--color-red); }

/* --- Blog list --- */
.blog-featured {
  grid-column: 1 / -1;
  padding: 2rem;
}
@media (min-width: 1024px) { .blog-featured { padding: 2.5rem; } }
.blog-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-fg-muted);
  margin-bottom: 0.75rem;
}
.blog-meta svg { width: 0.875rem; height: 0.875rem; }

/* --- DL list (company info) --- */
.dl-list { display: flex; flex-direction: column; gap: 1rem; }
.dl-list dt {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-fg-muted);
}
.dl-list dd { font-size: 0.875rem; color: var(--color-fg); }

/* --- Hour rows --- */
.hour-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-lg);
  background: rgba(241,245,249,0.5);
  font-size: 0.875rem;
}
.hour-row + .hour-row { margin-top: 0.5rem; }

/* --- Notice box --- */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-secondary);
}
.notice svg { flex-shrink: 0; color: var(--color-primary); width: 1.25rem; height: 1.25rem; margin-top: 0.125rem; }
.notice p { font-size: 0.875rem; line-height: 1.7; color: var(--color-fg-muted); }

/* --- Team --- */
.team-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 9999px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

/* --- Stats --- */
.stat-box {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  text-align: center;
}
.stat-number { font-size: 1.5rem; font-weight: 700; color: var(--color-primary); }
.stat-label { font-size: 0.75rem; color: var(--color-fg-muted); margin-top: 0.25rem; }

/* --- Recommendation box --- */
.rec-box { background: rgba(26,86,219,0.03); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 1.5rem 2rem; }

/* --- Article nav --- */
.article-nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 2rem;
  margin-top: 3rem;
  border-top: 1px solid var(--color-border);
}
@media (min-width: 640px) { .article-nav { flex-direction: row; justify-content: space-between; align-items: center; } }

/* --- Legal prose --- */
.legal h2 { margin-top: 2rem; font-size: 1.25rem; font-weight: 700; color: var(--color-fg); }
.legal h3 { margin-top: 1.5rem; font-size: 1.0625rem; font-weight: 600; color: var(--color-fg); }
.legal p { margin-top: 0.75rem; font-size: 0.9375rem; line-height: 1.7; color: var(--color-fg-muted); }
.legal ul { margin-top: 0.75rem; padding-left: 1.25rem; }
.legal li {
  position: relative;
  padding-left: 1rem;
  margin-top: 0.375rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-fg-muted);
}
.legal li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 9999px;
  background: var(--color-primary);
}

/* --- Comparison overview cards --- */
.comp-summary-card h3 { font-size: 1.125rem; font-weight: 600; }
.comp-summary-card .pro-line, .comp-summary-card .con-line {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-fg-muted);
}
.comp-summary-card .pro-line svg { color: var(--color-green); flex-shrink: 0; }
.comp-summary-card .con-line svg { color: var(--color-red); opacity: 0.6; flex-shrink: 0; }

/* --- Misc helpers --- */
.max-w-3xl { max-width: 48rem; margin-left: auto; margin-right: auto; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-16 { margin-top: 4rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.flex-shrink-0 { flex-shrink: 0; }
.inline-flex { display: inline-flex; }
.hidden { display: none; }
.w-full { width: 100%; }
.underline { text-decoration: underline; text-underline-offset: 2px; }

/* --- Responsive visibility --- */
@media (max-width: 767px) { .md-show { display: none !important; } }
@media (min-width: 768px) { .md-hide { display: none !important; } }