/* =========================================================
   BuyDubai Průvodce — shared styles
   Visual tokens match buydubai.cz / bd_calculator
   ========================================================= */

:root {
  /* Primary — teal/petrol */
  --primary-teal: #0c7d99;
  --primary-teal-dark: #096a82;
  --primary-teal-light: #e6f4f8;
  --primary-teal-mid: #1a8fac;

  /* Dark */
  --dark: #1a2332;
  --dark-soft: #2d3a4a;

  /* Accent */
  --accent-gold: #c9a84c;
  --accent-gold-soft: #f5edd4;

  /* Status */
  --positive-green: #0f8a5f;
  --positive-green-bg: #e8f7f2;
  --warning: #d29922;
  --warning-bg: #fdf5d9;

  /* Neutral */
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;

  /* Typography */
  --font-heading: 'Bodoni Moda', 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', 'Source Sans 3', system-ui, sans-serif;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.06);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --container-max: 1140px;
  --container-padding: var(--space-6);
}

/* =========================================================
   RESET & BASE
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, video, iframe { max-width: 100%; display: block; }
a { color: var(--primary-teal); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--primary-teal-dark); text-decoration: underline; }
h1, h2, h3, h4, h5 { font-family: var(--font-heading); font-weight: 700; color: var(--dark); line-height: 1.2; letter-spacing: -0.01em; margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* =========================================================
   LAYOUT
   ========================================================= */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}
.section { padding-block: var(--space-16); }
.section--alt { background: var(--gray-50); }
.section--dark { background: var(--dark); color: var(--white); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--white); }

/* =========================================================
   HEADER
   ========================================================= */

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(8px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.site-logo:hover { text-decoration: none; }
.site-logo img {
  height: 32px;
  width: auto;
  display: block;
}
.footer-brand img {
  height: 30px;
  width: auto;
  display: block;
  margin-bottom: var(--space-3);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.site-nav a {
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--primary-teal); text-decoration: none; }
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--dark);
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--transition-fast);
}
.header-cta:hover { background: var(--primary-teal); text-decoration: none; }
@media (max-width: 768px) {
  .site-nav { display: none; }
}
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: var(--space-4);
}
.lang-switcher-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 26px;
  padding: 0 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gray-500);
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
.lang-switcher-item:hover {
  color: var(--primary-teal);
  border-color: var(--primary-teal);
  text-decoration: none;
}
.lang-switcher-item.is-active {
  color: var(--white);
  background: var(--primary-teal);
  border-color: var(--primary-teal);
  pointer-events: none;
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  background: linear-gradient(135deg, #008ecf 0%, #0c7d99 100%);
  color: var(--white);
  padding-block: var(--space-20) var(--space-20);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.05) 0%, transparent 50%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  text-align: center;
  max-width: 820px;
  margin-inline: auto;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}
.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  color: var(--white);
  margin-bottom: var(--space-5);
  font-weight: 700;
  line-height: 1.1;
}
.hero p.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: rgba(255,255,255,0.92);
  max-width: 640px;
  margin-inline: auto;
  line-height: 1.55;
}
.hero-actions {
  margin-top: var(--space-10);
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  letter-spacing: 0.01em;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn--primary {
  background: var(--white);
  color: var(--primary-teal-dark);
}
.btn--primary:hover { background: var(--accent-gold-soft); color: var(--dark); }
.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.4);
}
.btn--outline:hover { background: rgba(255,255,255,0.12); color: var(--white); border-color: var(--white); }
.btn--dark {
  background: var(--dark);
  color: var(--white);
}
.btn--dark:hover { background: var(--primary-teal); color: var(--white); }
.btn--gold {
  background: var(--accent-gold);
  color: var(--dark);
}
.btn--gold:hover { background: #b89a43; color: var(--dark); }

/* =========================================================
   TRUST BAR
   ========================================================= */

.trust-bar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding-block: var(--space-10);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}
@media (max-width: 768px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
}
.trust-item .num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-teal);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.trust-item .label {
  font-size: 0.8125rem;
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

/* =========================================================
   SECTION HEADER
   ========================================================= */

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-teal);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.section-label::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent-gold);
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: var(--space-4);
}
.section-subtitle {
  font-size: 1.0625rem;
  color: var(--gray-600);
  max-width: 640px;
  margin-inline: auto;
}

/* =========================================================
   CHAPTER CARDS (TOC)
   ========================================================= */

.part-block {
  margin-bottom: var(--space-16);
}
.part-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-8);
  border-bottom: 2px solid var(--gray-200);
}
.part-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent-gold);
  text-transform: uppercase;
}
.part-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
}
.part-meta {
  margin-left: auto;
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 960px) { .chapters-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .chapters-grid { grid-template-columns: 1fr; } }

.chapter-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-sm);
  min-height: 220px;
}
.chapter-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-teal);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}
.chapter-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.chapter-num-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--primary-teal-light);
  color: var(--primary-teal);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
}
.chapter-card.is-featured .chapter-num-badge {
  background: var(--accent-gold-soft);
  color: #8d6f1f;
}
.chapter-card.is-featured {
  border-color: var(--accent-gold);
}
.chapter-card.is-featured:hover {
  border-color: #b89a43;
}
.chapter-meta {
  font-size: 0.75rem;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.chapter-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
  line-height: 1.3;
}
.chapter-card .chapter-sub {
  font-size: 0.875rem;
  color: var(--gray-600);
  flex-grow: 1;
  line-height: 1.55;
}
.chapter-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}
.chapter-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.chapter-tag {
  font-size: 0.6875rem;
  padding: 2px 8px;
  background: var(--gray-100);
  color: var(--gray-600);
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}
.chapter-tag.is-video { background: #ffe8ef; color: #a23256; }
.chapter-tag.is-calc { background: #e0f6ed; color: #0f6a4a; }
.chapter-tag.is-check { background: #efe6fb; color: #5b358b; }
.chapter-tag.is-pdf { background: #fff3d6; color: #8a6309; }
.chapter-arrow {
  font-size: 1.25rem;
  color: var(--primary-teal);
  font-weight: 700;
  transition: transform var(--transition-fast);
}
.chapter-card:hover .chapter-arrow { transform: translateX(4px); }

/* =========================================================
   TOOLS SECTION
   ========================================================= */

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
@media (max-width: 960px) { .tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .tools-grid { grid-template-columns: 1fr; } }

.tool-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}
.tool-card:hover {
  border-color: var(--primary-teal);
  box-shadow: var(--shadow-md);
}
.tool-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-teal);
  color: var(--white);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
}
.tool-card h4 {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  margin-bottom: var(--space-2);
}
.tool-card p {
  font-size: 0.875rem;
  color: var(--gray-600);
  flex-grow: 1;
  margin-bottom: var(--space-4);
}
.tool-card .tool-status {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  align-self: flex-start;
}
.tool-status.is-ready { background: var(--positive-green-bg); color: var(--positive-green); }
.tool-status.is-progress { background: var(--warning-bg); color: #8a6309; }
.tool-status.is-planned { background: var(--gray-100); color: var(--gray-600); }

/* =========================================================
   CTA BOX
   ========================================================= */

.cta-box {
  background: var(--dark);
  color: var(--white);
  padding: var(--space-12);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(12,125,153,0.35) 0%, transparent 60%);
  pointer-events: none;
}
.cta-box > * { position: relative; }
.cta-box h2 {
  color: var(--white);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: var(--space-3);
}
.cta-box p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}
.cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* =========================================================
   CHAPTER PAGE
   ========================================================= */

.chapter-header {
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  padding-block: var(--space-16) var(--space-12);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-bottom: var(--space-6);
}
.breadcrumb a { color: var(--gray-600); }
.breadcrumb a:hover { color: var(--primary-teal); }
.breadcrumb-sep { color: var(--gray-400); }

.chapter-head-main {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}
.chapter-head-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary-teal);
  margin-bottom: var(--space-3);
}
.chapter-head-main h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-4);
  line-height: 1.15;
}
.chapter-head-main .chapter-lead {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.6;
  max-width: 680px;
  margin-inline: auto;
}
.chapter-head-meta {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-6);
  font-size: 0.8125rem;
  color: var(--gray-500);
}
.chapter-head-meta span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* =========================================================
   VIDEO EMBED PLACEHOLDER
   ========================================================= */

.video-wrap {
  max-width: 900px;
  margin: var(--space-12) auto;
  padding-inline: var(--container-padding);
}
.video-embed {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0f1a22 0%, #1a2332 100%);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
}
.video-embed::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at center, rgba(12,125,153,0.2) 0%, transparent 60%);
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: inherit;
}
.video-embed:has(iframe)::before { display: none; }
.video-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(255,255,255,0.85);
  text-align: center;
}
.video-play-icon {
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.75rem;
  margin-bottom: var(--space-3);
  backdrop-filter: blur(4px);
}
.video-play-label {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
}

/* =========================================================
   CHAPTER CONTENT (prose)
   ========================================================= */

.chapter-body {
  max-width: 820px;
  margin-inline: auto;
  padding-inline: var(--container-padding);
}
.chapter-body section + section { margin-top: var(--space-16); }
.chapter-body h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-5);
  padding-top: var(--space-4);
}
.chapter-body h3 {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 700;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  color: var(--dark);
}
.chapter-body p {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--gray-700);
  margin-bottom: var(--space-5);
}
.chapter-body ul {
  list-style: none;
  margin-bottom: var(--space-6);
}
.chapter-body ul li {
  position: relative;
  padding-left: var(--space-8);
  margin-bottom: var(--space-3);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--gray-700);
}
.chapter-body ul li::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 14px;
  width: 6px;
  height: 6px;
  background: var(--accent-gold);
  border-radius: 50%;
}
.chapter-body strong { color: var(--dark); font-weight: 700; }

.chapter-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-size: 0.9375rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.chapter-body thead th {
  background: var(--gray-50);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 700;
  color: var(--dark);
  border-bottom: 2px solid var(--gray-200);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.chapter-body tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
  line-height: 1.5;
}
.chapter-body tbody tr:last-child td { border-bottom: none; }
.chapter-body tbody tr.is-total td {
  background: var(--primary-teal-light);
  font-weight: 700;
  color: var(--primary-teal-dark);
}
.chapter-body table td.num,
.chapter-body table th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .chapter-body table { font-size: 0.875rem; }
  .chapter-body thead th, .chapter-body tbody td {
    padding: var(--space-2) var(--space-3);
  }
}

.content-placeholder {
  background: repeating-linear-gradient(
    135deg,
    var(--gray-50) 0,
    var(--gray-50) 10px,
    #f0f2f4 10px,
    #f0f2f4 20px
  );
  color: var(--gray-500);
  border: 1px dashed var(--gray-300);
  padding: var(--space-8);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 0.875rem;
  font-style: italic;
}

/* Callout */
.callout {
  background: var(--primary-teal-light);
  border-left: 3px solid var(--primary-teal);
  padding: var(--space-5) var(--space-6);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-6) 0;
}
.callout strong { color: var(--primary-teal-dark); display: block; margin-bottom: var(--space-2); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; }
.callout p { font-size: 0.9375rem; margin: 0; }
.callout--gold { background: var(--accent-gold-soft); border-left-color: var(--accent-gold); }
.callout--gold strong { color: #8d6f1f; }

/* =========================================================
   RESOURCES BLOCK (Zdroje / Dokumenty / Nástroje)
   ========================================================= */

.resources-section {
  background: var(--gray-50);
  padding-block: var(--space-16);
  border-top: 1px solid var(--gray-200);
  margin-top: var(--space-16);
}
.resources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  max-width: 1000px;
  margin-inline: auto;
}
@media (max-width: 900px) { .resources-grid { grid-template-columns: 1fr; } }

.resource-col {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.resource-col h3 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-teal);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--gray-100);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.resource-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.resource-list li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.9375rem;
}
.resource-list li:last-child { border-bottom: none; }
.resource-list a {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--dark);
  text-decoration: none;
}
.resource-list a:hover { color: var(--primary-teal); text-decoration: none; }
.resource-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--primary-teal-light);
  color: var(--primary-teal);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 0.875rem;
  font-weight: 700;
}
.resource-label {
  flex-grow: 1;
  font-weight: 500;
  line-height: 1.4;
}
.resource-meta {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: 2px;
}
.resource-empty {
  color: var(--gray-400);
  font-size: 0.875rem;
  font-style: italic;
  padding: var(--space-4) 0;
}

/* =========================================================
   CHAPTER NAV (prev / next)
   ========================================================= */

.chapter-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  max-width: 1000px;
  margin: var(--space-16) auto 0;
  padding-inline: var(--container-padding);
}
@media (max-width: 640px) { .chapter-nav { grid-template-columns: 1fr; } }

.chapter-nav a {
  display: flex;
  flex-direction: column;
  padding: var(--space-5) var(--space-6);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-base);
}
.chapter-nav a:hover {
  border-color: var(--primary-teal);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.chapter-nav a.next { text-align: right; }
.chapter-nav .nav-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  margin-bottom: var(--space-2);
}
.chapter-nav .nav-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding-block: var(--space-12) var(--space-8);
  font-size: 0.875rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}
@media (max-width: 768px) { .footer-inner { grid-template-columns: 1fr 1fr; } }
.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: var(--space-2); }
.footer-col a { color: rgba(255,255,255,0.7); }
.footer-col a:hover { color: var(--white); text-decoration: none; }
.footer-brand { display: block; margin-bottom: var(--space-3); }
.footer-brand-text { color: rgba(255,255,255,0.6); line-height: 1.6; }
.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* =========================================================
   CHARTS
   Usage in chapter pages: include Chart.js CDN + charts.js in <head>,
   then <figure class="chart-wrap"><div class="chart-canvas"><canvas id="..."></canvas></div><figcaption class="chart-caption">...</figcaption></figure>
   ========================================================= */

.chart-wrap {
  margin: var(--space-10) 0;
  padding: var(--space-5) var(--space-6) var(--space-6);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.chart-wrap .chart-canvas {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 380px;
}
.chart-wrap .chart-canvas canvas {
  width: 100% !important;
  height: 100% !important;
}
.chart-wrap .chart-caption {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--gray-100);
  text-align: center;
  line-height: 1.5;
}
.chart-wrap .chart-caption strong { color: var(--gray-700); font-weight: 600; }
.chart-wrap .chart-caption a { color: var(--primary-teal); }

/* =========================================================
   CHECKLIST (tištěné PDF-style checklisty v kapitolách)
   ========================================================= */

.checklist-section {
  margin: var(--space-10) 0;
  padding: var(--space-8) var(--space-8) var(--space-6);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.checklist-section > h3 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin: 0 0 var(--space-2);
}
.checklist-section > h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--dark);
  margin: 0 0 var(--space-2);
  padding: 0;
}
.checklist-section .checklist-intro {
  font-size: 0.9375rem;
  color: var(--gray-600);
  margin-bottom: var(--space-6);
}
.checklist-group {
  margin: var(--space-8) 0 0;
  padding-top: var(--space-6);
  border-top: 1px dashed var(--gray-200);
}
.checklist-group:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.checklist-group h4 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-teal-dark);
  margin: 0 0 var(--space-4);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}
.checklist-group h4 .checklist-count {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 8px;
  background: var(--primary-teal-light);
  color: var(--primary-teal);
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}
.checklist-items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}
.checklist-items li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: var(--gray-700);
  line-height: 1.5;
  margin: 0;
  position: static;
}
.checklist-items li::before {
  content: none;
}
.checklist-items li .check-box {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--gray-300);
  border-radius: 3px;
  margin-top: 2px;
  background: var(--white);
}
.checklist-items li strong { color: var(--dark); }

/* =========================================================
   QUIZ
   Vanilla JS quiz component — see quiz.js
   ========================================================= */

.quiz {
  margin: var(--space-16) 0 var(--space-10);
  padding: var(--space-8) var(--space-8) var(--space-6);
  background: var(--primary-teal-light);
  border: 1px solid rgba(12, 125, 153, 0.22);
  border-radius: var(--radius-lg);
}
.quiz-eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary-teal);
  margin-bottom: var(--space-2);
  display: inline-block;
}
.quiz > h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--dark);
  margin: 0 0 var(--space-2);
  padding: 0;
  line-height: 1.25;
}
.quiz-intro {
  font-size: 0.9375rem;
  color: var(--gray-600);
  margin-bottom: var(--space-8);
}
.quiz-q {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px dashed rgba(12, 125, 153, 0.22);
}
.quiz-q:last-of-type {
  border-bottom: none;
  padding-bottom: var(--space-2);
}
.quiz-question {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: var(--space-4);
  line-height: 1.5;
}
.quiz-options {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-3);
  display: grid;
  gap: var(--space-2);
}
.quiz-options li {
  padding: 0;
  margin: 0;
}
.quiz-options li::before { display: none; }
.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: var(--space-3) var(--space-5);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--dark);
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
  line-height: 1.5;
}
.quiz-option:hover:not(:disabled) {
  border-color: var(--primary-teal);
  transform: translateX(2px);
}
.quiz-option:disabled { cursor: default; }
.quiz-option.is-correct {
  background: var(--positive-green-bg);
  border-color: var(--positive-green);
  color: var(--positive-green);
  font-weight: 600;
}
.quiz-option.is-incorrect {
  background: #fde8e8;
  border-color: var(--negative-red);
  color: var(--negative-red);
  font-weight: 600;
}
.quiz-explanation {
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--white);
  border-left: 3px solid var(--primary-teal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.9375rem;
  color: var(--gray-700);
  line-height: 1.6;
}
.quiz-explanation strong { color: var(--primary-teal-dark); }
.quiz-summary {
  margin-top: var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: var(--white);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 0.9375rem;
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
}
.quiz-summary .score {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--primary-teal);
  font-weight: 700;
}

/* =========================================================
   Glossary tooltip (auto-wrapped terms in chapter body)
   ========================================================= */
abbr.gl-term {
  text-decoration: none;
  border-bottom: 1px dotted var(--primary-teal);
  cursor: help;
  position: relative;
  font-variant: inherit;
  color: inherit;
}
abbr.gl-term:hover,
abbr.gl-term:focus {
  color: var(--primary-teal);
  outline: none;
}
abbr.gl-term::after {
  content: attr(data-def);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  min-width: 240px;
  max-width: 340px;
  width: max-content;
  padding: 0.65rem 0.85rem;
  background: var(--dark-navy, #1a2332);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
  text-transform: none;
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.12s ease, visibility 0.12s ease;
  z-index: 50;
  white-space: normal;
  text-align: left;
}
abbr.gl-term::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(100% + 2px);
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--dark-navy, #1a2332);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.12s ease, visibility 0.12s ease;
  z-index: 51;
}
abbr.gl-term:hover::after,
abbr.gl-term:focus::after,
abbr.gl-term:hover::before,
abbr.gl-term:focus::before,
abbr.gl-term.is-open::after,
abbr.gl-term.is-open::before {
  opacity: 1;
  visibility: visible;
}
@media (max-width: 640px) {
  abbr.gl-term::after {
    min-width: 200px;
    max-width: min(90vw, 300px);
    font-size: 0.8rem;
  }
}