*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Dark mode (default — AMOLED #000000 šetří baterii na telefonu) */
  --bg:           #000000;
  --bg-card:      #1a1a1a;
  --bg-hover:     #252525;
  --border:       #2a2a2a;
  --text:         #e8e8e8;
  --text-strong:  #ffffff;
  --text-muted:   #999;
  --primary:      #4ade80;
  --primary-dark: #15803d;
  --primary-border: #16a34a;
  --danger:       #f87171;
  --danger-dark:  #b91c1c;
  --danger-border: #dc2626;
  --warning:      #facc15;
  --success:      #4ade80;
  --info:         #3b82f6;
}

@media (prefers-color-scheme: light) {
  :root {
    /* Light mode — sjednoceno s sitarik.cz */
    --bg:           #f5f5f0;
    --bg-card:      #eaeae5;
    --bg-hover:     #dcdcd5;
    --border:       #c8c8c2;
    --text:         #1a1a1a;
    --text-strong:  #000000;
    --text-muted:   #5a5a5a;
    --primary:      #15803d;
    --primary-dark: #15803d;
    --primary-border: #166534;
    --danger:       #dc2626;
    --danger-dark:  #dc2626;
    --danger-border: #b91c1c;
    --warning:      #b07800;
    --success:      #14662f;
    --info:         #1e40af;
  }
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  height: 100%;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

/* Header */
.header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: var(--primary-dark);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 52px;
  gap: 8px;
}
.header.krize { background: var(--danger-dark); }

.header-back {
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px 4px 0;
  line-height: 1;
  opacity: 0.8;
  flex-shrink: 0;
}
.header-back:active { opacity: 1; }

.header-title {
  font-size: 16px;
  font-weight: 600;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 2px 7px;
  border-radius: 4px;
  flex-shrink: 0;
}
.header-badge.priprava { background: var(--primary); }
.header-badge.krize    { background: var(--danger); }

/* Content wrapper */
.content { flex: 1; padding: 16px; max-width: 700px; width: 100%; margin: 0 auto; }

/* Home screen */
.home {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  min-height: 100vh;
  gap: 28px;
  text-align: center;
}

.home-title { font-size: 30px; font-weight: 700; letter-spacing: -0.5px; }
.home-subtitle { font-size: 14px; color: var(--text-muted); font-style: italic; max-width: 280px; }

.home-buttons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  width: 100%;
  max-width: 320px;
}

.btn-home {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 28px 16px;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  color: white;
  text-align: center;
  width: 100%;
  min-height: 180px;
}
.btn-home:active { filter: brightness(0.85); }
.btn-priprava { background: var(--primary-dark); border: 1px solid var(--primary-border); }
.btn-krize    { background: var(--danger-dark);  border: 1px solid var(--danger-border); }

.btn-home-icon  { font-size: 56px; line-height: 1; }
.btn-home-label { font-size: 14px; font-weight: 600; line-height: 1.4; }

/* Lists */
.list-item {
  display: flex;
  align-items: center;
  padding: 14px 14px;
  background: var(--bg-card);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  border: 1px solid var(--border);
  gap: 12px;
  color: var(--text);
  user-select: none;
}
.list-item:active { background: var(--bg-hover); }

.list-icon  { font-size: 20px; flex-shrink: 0; }
.list-title { font-size: 15px; font-weight: 500; flex: 1; }
.list-arrow { color: var(--text-muted); font-size: 16px; flex-shrink: 0; }

.section-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin: 16px 0 8px;
}
.section-label:first-child { margin-top: 4px; }

/* Emergency bar */
.emergency-bar {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(209,68,68,0.1);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 52px;
  z-index: 9;
}

.btn-call {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px 10px;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  flex: 1;
}
.btn-call:active { filter: brightness(0.85); }

/* Markdown body */
.md-body { padding: 4px 0 40px; }
.md-body.krize { font-size: 19px; line-height: 1.7; }

/* Obrázky — škálují se na šíři kontejneru, pod nimi je atribuce v <em> */
.md-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 16px auto 4px;
  background: #fff;
  border-radius: 6px;
}
/* Tmavý režim (default): zjemníme bílé pozadí, ať nebije do očí */
.md-body img { filter: brightness(0.88); }
/* Line-art SVG (title="invert"): invertujeme do bílo-na-černém, transparentní */
.md-body img[title="invert"] {
  background: transparent;
  filter: invert(1) brightness(0.92);
}
@media (prefers-color-scheme: light) {
  .md-body img { filter: none; }
  .md-body img[title="invert"] { filter: none; background: #fff; }
}
.md-body img + em,
.md-body p > em:only-child {
  display: block;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 16px;
}

/* Krize — výrazné číslované akce */
.md-body.krize ol { padding-left: 0; list-style: none; counter-reset: krok; }
.md-body.krize ol > li {
  counter-increment: krok;
  position: relative;
  padding: 14px 16px 14px 60px;
  margin-bottom: 10px;
  background: var(--bg-card);
  border-radius: 10px;
  border-left: 4px solid var(--danger);
  font-size: 19px;
  line-height: 1.5;
}
.md-body.krize ol > li::before {
  content: counter(krok);
  position: absolute;
  left: 14px;
  top: 12px;
  font-size: 28px;
  font-weight: 800;
  color: var(--danger);
  line-height: 1;
}
.md-body.krize ol > li > ul,
.md-body.krize ol > li > ol { margin-top: 8px; padding-left: 22px; font-size: 17px; }

.md-body h1 { font-size: 22px; font-weight: 700; margin: 24px 0 12px; color: var(--text-strong); }
.md-body h2 { font-size: 18px; font-weight: 700; margin: 28px 0 10px; color: var(--primary); border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.md-body h3 { font-size: 16px; font-weight: 600; margin: 20px 0 8px; }
.md-body h4 { font-size: 15px; font-weight: 600; margin: 14px 0 6px; color: var(--text-muted); }
.md-body.krize h2 { color: var(--danger); font-size: 19px; }
.md-body.krize h3 { font-size: 17px; }

.md-body p  { margin: 10px 0; }
.md-body ul, .md-body ol { margin: 10px 0; padding-left: 22px; }
.md-body li { margin-bottom: 6px; }
.md-body strong { color: var(--text-strong); }
.md-body a  { color: var(--primary); }
.md-body.krize a { color: var(--danger); }
.md-body hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.md-body code { background: var(--bg-card); padding: 2px 6px; border-radius: 4px; font-family: monospace; font-size: 0.88em; color: var(--info); }
.md-body pre  { background: var(--bg-card); padding: 14px; border-radius: 8px; overflow-x: auto; margin: 14px 0; }
.md-body pre code { background: none; padding: 0; color: var(--text); font-size: 0.9em; }
.md-body blockquote { border-left: 3px solid var(--border); padding-left: 14px; color: var(--text-muted); margin: 12px 0; }

.md-body table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; }
.md-body th { background: var(--bg-card); padding: 8px 10px; text-align: left; border: 1px solid var(--border); font-weight: 600; }
.md-body td { padding: 8px 10px; border: 1px solid var(--border); }
.md-body tr:nth-child(even) td { background: rgba(255,255,255,0.025); }

/* Atlas hub — thumbnaily v tabulce a barevné rozlišení sekcí */
.md-body table img { width: 80px; height: 80px; max-width: 80px; object-fit: cover; margin: 0; display: block; }
.atlas-jedle table { border-left: 4px solid var(--success); }
.atlas-jedovate table { border-left: 4px solid var(--danger); }
.atlas-jedovate h2 { color: var(--danger); border-bottom-color: var(--danger); }

/* Stránky jedovatých hub (marker `<!-- jedovata -->` v markdownu) — červené nadpisy */
.md-body.jedovata h2 { color: var(--danger); border-bottom-color: var(--danger); }

/* Callouts */
.callout { padding: 12px 14px; border-radius: 8px; margin: 14px 0; border-left: 4px solid; }
.callout-warning { background: rgba(230,162,60,0.12); border-color: var(--warning); color: #f5d78d; }
.callout-danger  { background: rgba(209,68,68,0.12);  border-color: var(--danger);  color: #f5a4a4; }
.callout-info    { background: rgba(63,154,224,0.12); border-color: var(--info);    color: #a8d5f5; }
.callout-tip     { background: rgba(92,184,92,0.12);  border-color: var(--success); color: #a8e5a8; }
.callout-ukol    { background: rgba(167,139,250,0.12); border-color: #a78bfa;       color: #c4b5fd; }

@media (prefers-color-scheme: light) {
  .callout-warning { color: #854d0e; }
  .callout-danger  { color: #991b1b; }
  .callout-info    { color: #1e40af; }
  .callout-tip     { color: #166534; }
  .callout-ukol    { color: #5b21b6; }
}
.callout-title   { font-weight: 700; margin-bottom: 4px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.callout p { margin: 4px 0; }

/* Steps */
.step {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: var(--bg-card);
  border-radius: 8px;
  margin-bottom: 8px;
  border-left: 3px solid var(--primary);
}
.md-body.krize .step { border-left-color: var(--danger); }

.step-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  flex-shrink: 0;
  min-width: 26px;
}
.md-body.krize .step-num { color: var(--danger); font-size: 28px; }

.step-title { font-weight: 700; font-size: 15px; margin-bottom: 4px; color: var(--text-strong); }
.step-text  { font-size: 14px; color: var(--text); line-height: 1.5; }
.step-text p { margin: 0 0 6px; }
.step-text p:last-child { margin-bottom: 0; }
.step-text ul, .step-text ol { margin: 4px 0; padding-left: 18px; }
.step-text li { margin-bottom: 2px; }

/* Frequency */
.freq {
  display: block;
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--danger);
  padding: 14px;
  background: var(--bg-card);
  border-radius: 8px;
  margin: 12px 0;
  letter-spacing: 1px;
}

/* Loading / error */
.loading { text-align: center; padding: 48px 16px; color: var(--text-muted); font-size: 14px; }
.error-box {
  background: rgba(209,68,68,0.1);
  border: 1px solid var(--danger);
  border-radius: 8px;
  padding: 16px;
  margin: 16px 0;
  color: #f5a4a4;
  font-size: 14px;
}