/* AI Sprievodca — dizajnový systém zladený s MidgardNet brandom
   (rovnaké farebné tokeny/fonty ako midgardnet/assets/css/style.css).
   Cieľová skupina je staršia/netechnická používateľka, preto navyše:
   väčší základný text než na midgardnet.org, prepínač veľkosti a kontrastu. */

:root {
  --color-blue: #2456d6;
  --color-blue-bright: #6d93f5;
  --color-fjord: #14224a;
  --color-gold: #d9a441;
  --color-ink: #0a0e17;
  --color-ink-secondary: #0b1626;
  --color-panel: #111b2e;
  --color-panel-raised: #152239;
  --color-success: #23966b;
  --color-warning: #c9642a;
  --color-danger: #c14f4f;
  --color-text-primary: #f3f6ff;
  --color-text-secondary: #93a0be;
  --color-border: rgba(148, 163, 184, 0.16);
  --color-border-strong: rgba(148, 163, 184, 0.32);

  --font-heading: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --max-width: 820px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;

  --font-size-base: 19px;
  --line-height-base: 1.65;

  color-scheme: dark;
}

/* Prepínač veľkosti textu */
:root[data-text-size="veľký"] {
  --font-size-base: 22px;
}

/* Prepínač kontrastu — čistá čierna/biela namiesto navy tónov,
   pre ľudí, ktorým tmavomodrá s bielym textom nesadí. */
:root[data-contrast="vysoký"] {
  --color-ink: #000000;
  --color-ink-secondary: #000000;
  --color-panel: #000000;
  --color-panel-raised: #0a0a0a;
  --color-text-primary: #ffffff;
  --color-text-secondary: #e6e6e6;
  --color-border: rgba(255, 255, 255, 0.35);
  --color-border-strong: rgba(255, 255, 255, 0.6);
  --color-blue-bright: #9db8ff;
}

* { box-sizing: border-box; }

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--color-ink);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-blue-bright);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover, a:focus { color: var(--color-gold); }

:focus-visible {
  outline: 2px solid var(--color-blue-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

img { max-width: 100%; }

/* ---------- Hlavička ---------- */

.top-bar {
  background: var(--color-ink-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
}

.top-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-family: var(--font-body);
}

.brand {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

nav.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  font-size: 0.95rem;
}

nav.main-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 0.3rem 0.1rem;
  border-bottom: 2px solid transparent;
}

nav.main-nav a:hover,
nav.main-nav a[aria-current="page"] {
  border-bottom-color: var(--color-gold);
  color: var(--color-text-primary);
}

/* ---------- Nastavenia čítania ---------- */

.reading-settings {
  display: flex;
  gap: var(--space-1);
  align-items: center;
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.reading-settings button {
  font-family: var(--font-body);
  font-size: 0.85rem;
  background: var(--color-panel);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-primary);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
}

.reading-settings button[aria-pressed="true"] {
  background: var(--color-gold);
  color: var(--color-ink);
  border-color: var(--color-gold);
}

/* ---------- Layout ---------- */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-3) var(--space-4);
}

.hero {
  padding: var(--space-4) 0 var(--space-3);
}

.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-2);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  line-height: 1.25;
  margin: 0 0 var(--space-2);
  color: var(--color-text-primary);
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 60ch;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--space-4);
  color: var(--color-text-primary);
}

h3 {
  font-size: 1.2rem;
  margin-top: var(--space-3);
}

p { margin: 0 0 var(--space-2); }

ul, ol { padding-left: 1.4em; }
li { margin-bottom: 0.5em; }

/* ---------- Karty na úvodnej stránke ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
  margin: var(--space-3) 0;
}

.card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  text-decoration: none;
  color: var(--color-text-primary);
  display: block;
}

.card:hover, .card:focus-visible {
  border-color: var(--color-gold);
}

.card .card-emoji {
  font-size: 1.6rem;
  display: block;
  margin-bottom: var(--space-1);
}

.card h3 {
  margin-top: 0;
  font-family: var(--font-heading);
  color: var(--color-text-primary);
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ---------- Callouty ---------- */

.callout {
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin: var(--space-3) 0;
  border: 1px solid var(--color-border-strong);
  background: var(--color-panel);
}

.callout-tip {
  border-color: var(--color-success);
}

.callout-warning {
  border-color: var(--color-warning);
}

.callout-danger {
  border-color: var(--color-danger);
}

.callout p:last-child { margin-bottom: 0; }

.callout-title {
  font-weight: 700;
  font-family: var(--font-heading);
  display: block;
  margin-bottom: 0.3rem;
}

.callout-tip .callout-title { color: var(--color-success); }
.callout-warning .callout-title { color: var(--color-warning); }
.callout-danger .callout-title { color: var(--color-danger); }

/* ---------- Príklady pred / po ---------- */

.example-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  margin: var(--space-2) 0 var(--space-3);
}

@media (min-width: 640px) {
  .example-pair { grid-template-columns: 1fr 1fr; }
}

.example-box {
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: 0.95rem;
  background: var(--color-panel);
}

.example-box.bad { border: 1px solid var(--color-danger); }
.example-box.good { border: 1px solid var(--color-success); }

.example-label {
  font-weight: 700;
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.example-box.bad .example-label { color: var(--color-danger); }
.example-box.good .example-label { color: var(--color-success); }

/* ---------- Kroky ---------- */

.steps {
  list-style: none;
  padding: 0;
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 3rem;
  margin-bottom: var(--space-3);
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  background: var(--color-blue);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Formuláre (prompt builder) ---------- */

.field {
  margin-bottom: var(--space-3);
}

.field label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.field .hint {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.field textarea,
.field input[type="text"] {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-text-primary);
}

.field textarea:focus,
.field input[type="text"]:focus {
  border-color: var(--color-blue-bright);
}

button.primary {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  background: var(--color-blue);
  color: #fff;
  border: none;
  padding: 0.8rem 1.4rem;
  border-radius: 999px;
  cursor: pointer;
}

button.primary:hover { background: var(--color-blue-bright); }

.output-box {
  background: var(--color-panel-raised);
  border: 2px solid var(--color-gold);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  font-family: var(--font-body);
  white-space: pre-wrap;
  margin-top: var(--space-2);
  min-height: 4rem;
}

.output-actions {
  margin-top: var(--space-2);
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.copy-feedback {
  font-size: 0.9rem;
  color: var(--color-success);
}

/* ---------- Slovník ---------- */

dl.glossary dt {
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-gold);
  margin-top: var(--space-3);
}

dl.glossary dd {
  margin: 0.3rem 0 0;
  color: var(--color-text-secondary);
}

/* ---------- Päta ---------- */

footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ---------- Navigácia medzi lekciami ---------- */

.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.lesson-nav a {
  text-decoration: none;
  font-weight: 700;
}