/* Web Editor — produktový web.

   Vzhled je sklo appky (Liquid Glass): průsvitné panely s rozmazáním nad
   klidným barevným polem. Zákazy z design/bans/llm-defaults.md platí, jen
   sklo a průsvitnost jsou výslovné zadání — jinde je nepoužívej.

   Čísla, nic mezi nimi:
   písmo    13 / 15 / 17 / 22 / 28 / 40 / 56 px, váhy 400 a 600
   mezery   8 / 16 / 24 / 40 / 64 / 104 px
   rádius   20 panel, 12 tlačítko a ikona v nadpisu, 6 kód
   pohyb    120 ms, jen barva a pozadí */

:root {
  color-scheme: light dark;

  --bg: #f3f2f8;
  --field-a: rgba(150, 128, 255, 0.34);
  --field-b: rgba(196, 240, 68, 0.30);
  --ink: #16141f;
  --ink-2: #4e4b61;
  --ink-3: #66637a;
  --accent: #5a43c9;
  --on-accent: #ffffff;
  --glass: rgba(255, 255, 255, 0.56);
  --glass-bar: rgba(243, 242, 248, 0.72);
  --hairline: rgba(22, 20, 31, 0.10);
  --hairline-strong: rgba(22, 20, 31, 0.18);
  --rim: rgba(255, 255, 255, 0.85);
  --code-bg: rgba(22, 20, 31, 0.05);

  /* Kresby z appky jsou tmavé a přebarvovat je nebudeme: sedí vždycky na
     tmavé scéně, i ve světlém režimu. */
  --stage: #17151f;
  --stage-rim: rgba(255, 255, 255, 0.08);

  --radius-panel: 20px;
  --radius-control: 12px;
  --gutter: max(16px, env(safe-area-inset-left));
  --gutter-r: max(16px, env(safe-area-inset-right));
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0c13;
    --field-a: rgba(124, 100, 240, 0.26);
    --field-b: rgba(160, 210, 60, 0.09);
    --ink: #f2f1f7;
    --ink-2: #a6a4b3;
    --ink-3: #8c8a9b;
    --accent: #bbacff;
    --on-accent: #17122e;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-bar: rgba(13, 12, 19, 0.64);
    --hairline: rgba(255, 255, 255, 0.09);
    --hairline-strong: rgba(255, 255, 255, 0.17);
    --rim: rgba(255, 255, 255, 0.07);
    --code-bg: rgba(255, 255, 255, 0.07);
    --stage: rgba(23, 21, 31, 0.78);
  }
}

@media (min-width: 720px) {
  :root { --gutter: max(24px, env(safe-area-inset-left)); --gutter-r: max(24px, env(safe-area-inset-right)); }
}
@media (min-width: 1024px) {
  :root { --gutter: 40px; --gutter-r: 40px; }
}

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

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

/* Barevné pole za sklem. Bez něj by rozmazání nemělo co rozmazat
   a panely by vypadaly jako obyčejné šedé plochy. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60vmax 44vmax at 88% -8%, var(--field-a), transparent 70%),
    radial-gradient(52vmax 36vmax at -6% 104%, var(--field-b), transparent 70%);
}

a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
img, svg { display: block; max-width: 100%; }
strong { font-weight: 600; }

.wrap {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter-r);
}

.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-panel);
  /* Světelná hrana nahoře: to, co dělá sklo sklem. Není to stín. */
  box-shadow: inset 0 1px 0 var(--rim);
}

/* ---------- Hlavička ---------- */

.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding-top: env(safe-area-inset-top);
  background: var(--glass-bar);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
  border-bottom: 1px solid var(--hairline);
}
.bar .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 56px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; flex: none; }
.brand-name { font-size: 15px; font-weight: 600; }
.by { font-size: 13px; color: var(--ink-2); white-space: nowrap; }
.by a { color: inherit; text-decoration: none; }
.by a:hover { color: var(--accent); }

.nav {
  display: none;
  gap: 8px;
  margin-left: auto;
}
.nav a {
  font-size: 13px;
  color: var(--ink-2);
  text-decoration: none;
  padding: 8px 8px;
  border-radius: 8px;
  transition: color 120ms, background-color 120ms;
}
.nav a:hover { color: var(--ink); background: var(--code-bg); }
.lang {
  margin-left: auto;
  flex: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  min-width: 40px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  padding-inline: 8px;
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  transition: background-color 120ms;
}
.lang:hover { background: var(--code-bg); }
@media (min-width: 900px) {
  .nav { display: flex; }
  .nav + .lang { margin-left: 8px; }
}
@media (max-width: 400px) {
  .by { display: none; }
}

/* ---------- Tlačítka ---------- */

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-control);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 120ms, filter 120ms;
}
.button svg { width: 16px; height: 16px; flex: none; }
.button-primary { background: var(--accent); color: var(--on-accent); }
.button-primary:hover { filter: brightness(1.08); }
.button-glass {
  color: var(--ink);
  background: var(--glass);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--hairline-strong);
}
.button-glass:hover { background: var(--code-bg); }

/* ---------- Hero ---------- */

.hero { padding-block: 40px 64px; }
.hero-grid { display: grid; gap: 40px; align-items: center; }
.eyebrow { font-size: 13px; font-weight: 600; color: var(--accent); margin-bottom: 16px; }
h1 {
  font-size: 40px;
  line-height: 1.06;
  font-weight: 600;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
h1 .quiet, h2 .quiet { color: var(--ink-2); }
.lead {
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 36em;
  margin-top: 16px;
}
.lead strong { color: var(--ink); }

.stage {
  background: var(--stage);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--stage-rim);
  border-radius: var(--radius-panel);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
  padding: 24px;
  margin: 0;
}
.stage img { width: 100%; height: auto; margin-inline: auto; }
.hero .stage img { max-width: 440px; }

@media (min-width: 720px) {
  .hero { padding-block: 64px 104px; }
  h1 { font-size: 56px; }
}
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 64px; }
  .stage { padding: 40px; }
}

/* ---------- Sekce ---------- */

.section { padding-block: 64px; }
.section + .section { border-top: 1px solid var(--hairline); }
h2 {
  font-size: 28px;
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: -0.02em;
  max-width: 20em;
  text-wrap: balance;
}
h3 { font-size: 17px; line-height: 1.35; font-weight: 600; }
@media (min-width: 720px) {
  .section { padding-block: 104px; }
  h2 { font-size: 40px; }
}

/* Řada tří: bez karet, jen vlasová čára nad každou položkou a číslo místo ikony. */
.row3 {
  display: grid;
  gap: 24px;
  margin-top: 40px;
  list-style: none;
  counter-reset: item;
}
.row3 > li {
  border-top: 1px solid var(--hairline-strong);
  padding-top: 16px;
  counter-increment: item;
}
.row3.numbered > li::before {
  content: counter(item, decimal-leading-zero);
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}
.row3 p { color: var(--ink-2); margin-top: 8px; max-width: 32em; }
@media (min-width: 860px) {
  .row3 { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
}

/* Dvě půlky: kresba a text vedle sebe, pod 960 px pod sebou. */
.split { display: grid; gap: 40px; margin-top: 40px; align-items: start; }
.split .stage img { max-width: 360px; }
@media (min-width: 960px) {
  .split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; }
  .split.flip > :first-child { order: 2; }
}

.steps { list-style: none; counter-reset: step; display: grid; gap: 16px; }
.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 40px;
  color: var(--ink-2);
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.steps strong { color: var(--ink); }
.split .steps li, .panel .steps li { font-size: 15px; }
.text-block p { color: var(--ink-2); }
.text-block p + p { margin-top: 16px; }
.text-block strong { color: var(--ink); }

/* Seznam s pomlčkou: položka bez ikony. */
.dash { list-style: none; display: grid; gap: 8px; }
.dash li { position: relative; padding-left: 24px; color: var(--ink-2); }
.dash li::before { content: "—"; position: absolute; left: 0; color: var(--ink-3); }

.panel { padding: 24px; }
.panel h3 { margin-bottom: 16px; }
.panel .label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}
.panel .label.muted { color: var(--ink-2); }
@media (min-width: 720px) { .panel { padding: 40px; } }

.pair { display: grid; gap: 16px; margin-top: 40px; }
@media (min-width: 860px) { .pair { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; } }

.note { font-size: 13px; color: var(--ink-3); margin-top: 16px; max-width: 48em; }
.note-body { font-size: 15px; color: var(--ink-2); margin-top: 24px; max-width: 44em; }

/* Pro toho, kdo sem přišel z odkazu v zadání — jiný návštěvník než ten z vizitky. */
.aside {
  margin-top: 40px;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
  color: var(--ink-2);
  max-width: 44em;
}
.aside strong { color: var(--ink); }

code, kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  background: var(--code-bg);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.address {
  display: block;
  margin-top: 16px;
  font-size: 15px;
  padding: 8px 16px;
  width: fit-content;
  max-width: 100%;
}

.install { margin-top: 40px; }
.install .steps { margin-top: 24px; }

/* ---------- Závěrečná výzva ---------- */

.closing .panel { display: grid; gap: 40px; }
.closing .row3 { margin-top: 0; }
@media (min-width: 960px) { .closing .panel { padding: 64px; } }

/* ---------- Patička ---------- */

.foot {
  margin-top: auto;
  border-top: 1px solid var(--hairline);
  padding-bottom: env(safe-area-inset-bottom);
  font-size: 13px;
  color: var(--ink-2);
}
.foot .wrap {
  display: grid;
  gap: 24px;
  padding-block: 40px;
}
.foot p { line-height: 1.7; }
.foot strong { color: var(--ink); }
.foot a { color: var(--ink-2); text-decoration: none; }
.foot a:hover { color: var(--accent); }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
@media (min-width: 860px) {
  .foot .wrap { grid-template-columns: auto auto; justify-content: space-between; align-items: start; }
  .foot nav { justify-content: flex-end; max-width: 520px; }
}

/* ---------- Dokumenty (soukromí, podpora) ---------- */

.doc { padding-block: 40px 64px; }
.doc .wrap > * { max-width: 680px; }
.doc h1 { font-size: 40px; }
.doc .updated { font-size: 13px; color: var(--ink-3); margin-top: 8px; }
.doc h2 { font-size: 22px; line-height: 1.3; letter-spacing: -0.01em; margin-top: 40px; }
.doc h3 { margin-top: 24px; }
.doc p, .doc li { font-size: 17px; line-height: 1.55; color: var(--ink-2); }
.doc p { margin-top: 16px; }
.doc strong, .doc em { color: var(--ink); }
.doc ul { list-style: none; display: grid; gap: 8px; margin-top: 16px; }
.doc ul li { position: relative; padding-left: 24px; }
.doc ul li::before { content: "—"; position: absolute; left: 0; color: var(--ink-3); }
.doc .lead { margin-top: 24px; }
.doc .glass { padding: 24px; margin-top: 24px; }
.doc .glass p { margin-top: 0; }
@media (min-width: 720px) {
  .doc { padding-block: 64px 104px; }
  .doc h1 { font-size: 56px; }
}

/* ---------- 404 ---------- */

.missing { padding-block: 104px; }
.missing p { color: var(--ink-2); font-size: 17px; margin-top: 16px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}