/* Pixomat — prezentační web (F9; paleta F13a). Barvy = závazné tokeny brand
   kitu v2 „Mint" (docs/02-brand/brand-kit-v2.md §4), písmo = systémové (O-18).
   Žargon-free copy (doc 13). POZOR: --accent je výhradně výplň — jako text,
   ikona či okraj má na světlé ploše ~1,4:1; na popředí patří --accent-text.
   --paper = plocha stránky, --surface = karta (v light je karta SVĚTLEJŠÍ). */

:root {
  --paper: #f7f8f9;
  --surface: #ffffff;
  --ink: #0b1220;
  --ink-secondary: #5a6670;
  --accent: #7eead2;
  --accent-text: #0a7d6d;
  --accent-strong: #5ee0c4;
  --accent-soft: #e6fbf5;
  --on-accent: #04090f;
  --success: #065f52;
  --error: #b3261e;
  --border: #e6e9eb;
  --border-functional: #848b93;
  --hover: #eff1f2;
  --overlay: rgba(4, 9, 15, 0.6);
  --shadow: 0 2px 8px rgba(11, 18, 32, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #04090f;
    --surface: #0e161a;
    --ink: #ffffff;
    --ink-secondary: #9ba6ad;
    --accent: #7eead2;
    --accent-text: #7eead2;
    --accent-strong: #5ee0c4;
    --accent-soft: #0f2b28;
    --on-accent: #04090f;
    --success: #4ade80;
    --error: #f2b8b5;
    --border: #1a232a;
    --border-functional: #5e6b78;
    --hover: #1c252b;
    /* Tmavý režim je bez stínů — hloubka se dělá zesvětlením povrchu (§7.4). */
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--accent-text); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, label:focus-within {
  outline: 3px solid var(--accent-text);
  outline-offset: 2px;
  border-radius: 4px;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* --- Hlavička ------------------------------------------------------------ */
header.site {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
header.site .row {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; gap: 16px;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 22px; color: var(--ink); text-decoration: none;
}
.logo .mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--accent); color: var(--on-accent);
  display: grid; place-items: center;
}
nav.main { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
nav.main a {
  color: var(--ink-secondary); text-decoration: none; font-weight: 600;
  padding: 12px 14px; border-radius: 999px; min-height: 48px;
  display: inline-flex; align-items: center; cursor: pointer;
  transition: background-color 200ms, color 200ms;
}
nav.main a:hover { background: var(--accent-soft); color: var(--ink); }
nav.main a.lang { border: 1px solid var(--border); }

/* --- Hero ----------------------------------------------------------------- */
.hero {
  background: linear-gradient(180deg, var(--accent-soft), var(--paper) 88%);
  padding: 72px 0 40px;
}
.hero .grid { display: grid; gap: 40px; grid-template-columns: 1.1fr 1fr; align-items: center; }
h1 { font-size: clamp(34px, 5vw, 52px); line-height: 1.15; margin: 0 0 20px; letter-spacing: -0.02em; }
.lede { font-size: clamp(19px, 2.4vw, 23px); color: var(--ink-secondary); margin: 0 0 28px; max-width: 34ch; }
.hero .note { color: var(--ink-secondary); font-size: 15px; margin-top: 14px; }

.badges { display: flex; gap: 12px; flex-wrap: wrap; }
.badge-store {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1.5px solid var(--border-functional); border-radius: 14px;
  padding: 10px 18px; min-height: 56px; background: var(--surface);
  color: var(--ink); font-weight: 700; text-decoration: none;
}
.badge-store small { display: block; font-weight: 500; color: var(--ink-secondary); font-size: 12px; }
.badge-store span { line-height: 1.2; }

/* --- Sekce ----------------------------------------------------------------- */
section { padding: 64px 0; }
section.alt { background: var(--surface); }
h2 { font-size: clamp(26px, 3.6vw, 36px); line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
.section-lede { color: var(--ink-secondary); max-width: 60ch; margin: 0 0 36px; font-size: 18px; }

/* Před/po ukázky */
.showcase-grid { display: grid; gap: 24px; grid-template-columns: repeat(3, 1fr); }
.pair { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.pair figure { margin: 0; }
.pair figcaption { padding: 14px 18px; font-weight: 700; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.pair figcaption .cat { font-weight: 500; color: var(--ink-secondary); font-size: 14px; }

.ba { position: relative; aspect-ratio: 4 / 5; overflow: hidden; background: var(--surface); }
.ba img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ba img.after { clip-path: inset(0 0 0 50%); }
/* Čára i táhlo leží nad fotkou, ne nad plochou — bílé v obou režimech (§8.8). */
.ba .divider {
  position: absolute; top: 0; bottom: 0; left: 50%; width: 3px;
  background: #ffffff; box-shadow: 0 0 6px rgba(0,0,0,.4);
  transform: translateX(-50%); pointer-events: none;
}
.ba .knob {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 44px; height: 44px; border-radius: 50%;
  background: #ffffff; color: #0b1220;
  display: grid; place-items: center; box-shadow: 0 2px 10px rgba(0,0,0,.35);
  pointer-events: none;
}
.ba input[type="range"] {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0; margin: 0; cursor: ew-resize;
}
.ba .tag {
  position: absolute; top: 12px; padding: 4px 12px; border-radius: 999px;
  font-size: 13px; font-weight: 700; background: var(--overlay); color: #fff;
  pointer-events: none;
}
.ba .tag.before { left: 12px; }
.ba .tag.after { right: 12px; }

/* Kroky */
.steps { display: grid; gap: 24px; grid-template-columns: repeat(3, 1fr); counter-reset: step; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.step .num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: var(--on-accent);
  display: grid; place-items: center; font-weight: 800; font-size: 20px; margin-bottom: 16px;
}
.step h3 { margin: 0 0 8px; font-size: 20px; }
.step p { margin: 0; color: var(--ink-secondary); }

/* Pilíře */
.pillars { display: grid; gap: 24px; grid-template-columns: repeat(3, 1fr); }
.pillar { border-radius: var(--radius); padding: 28px; background: var(--accent-soft); }
.pillar svg { width: 32px; height: 32px; color: var(--accent-text); margin-bottom: 14px; }
.pillar h3 { margin: 0 0 8px; font-size: 20px; }
.pillar p { margin: 0; color: var(--ink); opacity: .85; }

/* FAQ */
.faq { max-width: 720px; }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary {
  cursor: pointer; font-weight: 700; padding: 18px 4px; min-height: 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 24px; color: var(--accent-text); flex-shrink: 0; }
.faq details[open] summary::after { content: "–"; }
.faq .a { padding: 0 4px 18px; color: var(--ink-secondary); max-width: 65ch; }

/* Formulář (nahlásit) */
form.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; max-width: 640px; box-shadow: var(--shadow);
}
fieldset { border: 0; padding: 0; margin: 0 0 24px; }
legend, .field-label { font-weight: 700; margin-bottom: 10px; display: block; }
.radio {
  display: flex; align-items: flex-start; gap: 12px; padding: 12px;
  border: 1.5px solid var(--border-functional); border-radius: var(--radius-sm); margin-bottom: 10px;
  cursor: pointer; transition: border-color 200ms, background-color 200ms;
}
.radio:hover { background: var(--hover); }
.radio:has(input:checked) { border-color: var(--accent-text); background: var(--accent-soft); }
.radio input { width: 22px; height: 22px; margin: 2px 0 0; accent-color: var(--accent-text); cursor: pointer; }
textarea, input[type="email"] {
  width: 100%; font: inherit; color: var(--ink); background: var(--surface);
  border: 1.5px solid var(--border-functional); border-radius: var(--radius-sm); padding: 14px;
}
textarea { min-height: 140px; resize: vertical; }
.hint { color: var(--ink-secondary); font-size: 15px; margin-top: 6px; }
.form-status { border-radius: var(--radius-sm); padding: 16px; margin-top: 20px; font-weight: 600; }
.form-status.ok { background: color-mix(in srgb, var(--success) 14%, var(--paper)); color: var(--success); }
.form-status.err { background: color-mix(in srgb, var(--error) 12%, var(--paper)); color: var(--error); }
/* Honeypot — mimo obrazovku, ne display:none (některým botům je nápadné). */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Tlačítka */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 56px; padding: 14px 32px; border-radius: 999px; border: 0;
  background: var(--accent); color: var(--on-accent);
  font: inherit; font-weight: 700; font-size: 18px; text-decoration: none; cursor: pointer;
  transition: background-color 200ms;
}
.btn:hover { background: var(--accent-strong); }
.btn[disabled] { opacity: .6; cursor: default; }
.btn.secondary { background: transparent; color: var(--accent-text); border: 2px solid var(--accent-text); }
.btn.secondary:hover { background: var(--accent-soft); }

/* Patička */
footer.site { border-top: 1px solid var(--border); padding: 40px 0 56px; color: var(--ink-secondary); }
footer.site .cols { display: flex; gap: 32px; flex-wrap: wrap; justify-content: space-between; }
footer.site a { color: var(--ink-secondary); text-decoration: none; padding: 6px 0; display: inline-block; min-height: 44px; }
footer.site a:hover { color: var(--ink); text-decoration: underline; }
footer.site ul { list-style: none; margin: 0; padding: 0; }
footer.site .small { font-size: 14px; margin-top: 24px; max-width: 70ch; }

/* Prose (soukromí) */
.prose { max-width: 68ch; }
.prose h2 { font-size: 24px; margin-top: 36px; }
.prose p, .prose li { color: var(--ink-secondary); }

/* Responsive */
@media (max-width: 900px) {
  .hero .grid, .showcase-grid, .steps, .pillars { grid-template-columns: 1fr 1fr; }
  .hero .grid { gap: 28px; }
}
@media (max-width: 640px) {
  .hero { padding: 48px 0 24px; }
  .hero .grid, .showcase-grid, .steps, .pillars { grid-template-columns: 1fr; }
  section { padding: 48px 0; }
  nav.main a { padding: 10px 10px; }
}