/* =========================================================
   LFaudio, base.css
   Sdílené základy: proměnné, reset, typografie, header/nav,
   tlačítka, formuláře, drawer/toast, patička.
   Používá se na všech stránkách.
   ========================================================= */

:root {
  --bg: #0e1014;
  --bg-2: #14171d;
  --bg-3: #1b1f27;
  --surface: #181c23;
  --line: #2a2f3a;
  --text: #e8eaee;
  --muted: #9aa3b2;
  --muted-2: #8d96a6;
  --accent: #8cff01;
  --accent-2: #8cff01;
  --accent-soft: rgba(140, 255, 1, 0.14);
  --accent-rgb: 140, 255, 1;
  --on-accent: #18120c;
  --ok: #34d399;
  --warn: #ff9f1a;
  --danger: #ff5b5b;
  --header-bg: rgba(14, 16, 20, 0.82);
  --nav-bg: rgba(20, 23, 29, 0.8);
  --nav-border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  /* Tlačítka a pole formulářů (tvar a zaoblení se mění v administraci, Vzhled → Tvar a velikost) */
  --radius-btn: calc(var(--radius) * 0.6875);
  --radius-input: calc(var(--radius) * 0.6875);
  --radius-chip: 999px;
  --btn-bg: linear-gradient(135deg, var(--accent), var(--accent-2));
  --btn-shadow: 0 4px 12px -6px var(--accent);
  --btn-shadow-hover: 0 8px 16px -8px var(--accent);
  --header-shadow: 0 8px 30px -16px rgba(0, 0, 0, 0.6);
  --card-shadow: 0 2px 8px -4px rgba(20, 30, 50, 0.25);
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
  --maxw: 1180px;
  --header-h: 70px;
  --section-pad: 96px;
  --section-pad-sm: 70px;
  /* Logo (velikost se mění v administraci) a destička pod bílým logem ve světlém motivu */
  --logo-h: 44px;
  --hero-logo-w: 420px;
  --logo-plate: #0e1014;
  /* Pohyb: vzdálenost vynoření sekcí a zvednutí karet, rychlost pásu značek */
  --reveal-y: 26px;
  --lift: -6px;
  --lift-sm: -2px;
  --marquee-s: 28s;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Sora", var(--font);
}

:root[data-theme="light"] {
  --bg: #eef0f4;
  --bg-2: #ffffff;
  --bg-3: #e3e7ee;
  --surface: #ffffff;
  --line: #c6cdd9;
  --text: #0f131a;
  --muted: #444d5f;
  --muted-2: #556075;
  /* Neonová zelená (#8cff01) je na bílé nečitelná a „vyprané“, ve světlém motivu
     proto používáme sytější tmavší zelenou i pro tlačítka a prvky (bílý text na ní má kontrast > 5:1). */
  --accent: #4f8a00;
  --accent-2: #3b6a00;
  --accent-soft: rgba(79, 138, 0, 0.13);
  --accent-rgb: 79, 138, 0;
  --on-accent: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.92);
  --nav-bg: rgba(255, 255, 255, 0.9);
  --nav-border: rgba(15, 23, 42, 0.14);
  --shadow: 0 18px 40px -20px rgba(20, 30, 50, 0.35);
}

html[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); color-scheme: dark; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: var(--accent); color: var(--on-accent); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

h1, h2, h3 { font-family: var(--display); line-height: 1.12; letter-spacing: -0.02em; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-2); margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--accent); border-radius: 2px; }

section { padding: var(--section-pad) 0; position: relative; }
.section-title { font-size: clamp(1.9rem, 4vw, 2.8rem); margin-bottom: 14px; }
.section-lead { color: var(--muted); max-width: 620px; font-size: 1.08rem; }

/* ---------- Header ---------- */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
  border-bottom: 1px solid transparent;
}
header.scrolled {
  background: var(--header-bg);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
  box-shadow: var(--header-shadow);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--display); font-weight: 800; font-size: 1.25rem; letter-spacing: -0.01em; }
.brand-logo {
  height: var(--logo-h); width: auto; max-width: min(260px, 52vw); display: block;
  object-fit: contain; filter: drop-shadow(0 6px 16px rgba(0,0,0,0.18));
}
/* Výchozí logo je bílá kresba na průhledném pozadí, navržená pro tmavý web.
   Ve světlém motivu by bez podkladu byla téměř neviditelná, proto dostane
   tmavou "destičku" (barva tmavého motivu, --logo-plate), aby zůstala čitelná i barevná.
   Padding je na .brand (bez pevné výšky), ne na .brand-logo, jinak by kvůli
   box-sizing: border-box ukrajoval z pevné výšky a logo by se zmenšilo.
   Vlastní logo pro světlý motiv (nebo vypnutá destička v administraci) je bez destičky (.brand-plain). */
:root[data-theme="light"] header .brand:not(.brand-plain) {
  background: var(--logo-plate);
  padding: 8px 16px;
  border-radius: calc(var(--radius) * 0.75);
}
/* Dvě loga (tmavý a světlý motiv): zobrazí se jen to, které k motivu patří */
img.logo-light { display: none; }
:root[data-theme="light"] img.logo-dark { display: none; }
:root[data-theme="light"] img.logo-light { display: block; }
.brand .logo { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: calc(var(--radius) * 0.5625); background: var(--accent-soft); color: var(--accent-2); flex: 0 0 auto; }
.brand .logo svg { width: 20px; height: 20px; }
.brand-name { white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  padding: 9px 14px; border-radius: calc(var(--radius) * 0.5625); font-size: 0.95rem; font-weight: 500; color: var(--muted);
  transition: color .2s, background .2s;
}
.nav-links a.active {
  color: var(--accent-2);
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.06), rgba(var(--accent-rgb), 0.02));
  box-shadow: inset 0 -3px 0 0 var(--accent-soft);
  font-weight: 700;
}
.nav-links a:hover { color: var(--text); background: var(--bg-3); }
.nav-actions { display: flex; align-items: center; gap: 10px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-weight: 600; font-size: 0.95rem; padding: 11px 20px; border-radius: var(--radius-btn);
  cursor: pointer; border: 1px solid transparent; transition: transform .15s, box-shadow .25s, background .2s, border-color .2s; white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--btn-bg); color: var(--on-accent); box-shadow: var(--btn-shadow); }
.btn-primary:hover { transform: translateY(var(--lift-sm)); box-shadow: var(--btn-shadow-hover); }
.btn-ghost { background: var(--bg-3); color: var(--text); border-color: var(--line); }
.btn-ghost:hover { background: var(--surface); border-color: var(--accent); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--line); }
:root[data-theme="light"] .btn-outline { border-color: #8d97a8; border-width: 1.5px; }
:root[data-theme="light"] .btn-ghost { border-color: #aab2c0; }
:root[data-theme="light"] .card, :root[data-theme="light"] .product-card, :root[data-theme="light"] .info-item { box-shadow: var(--card-shadow); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-2); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn.active {
  color: var(--accent-2);
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.06), rgba(var(--accent-rgb), 0.02));
  box-shadow: inset 0 -3px 0 0 var(--accent-soft);
  font-weight: 700;
  border-color: transparent;
}

.icon-btn { width: 44px; height: 44px; border-radius: var(--radius-btn); border: 1px solid var(--line); background: var(--bg-3); color: var(--text); cursor: pointer; display: grid; place-items: center; transition: .2s; }
.icon-btn:hover { border-color: var(--accent); color: var(--accent-2); }
.icon-btn svg { width: 19px; height: 19px; }

.theme-toggle .ico-moon { display: none; }
.theme-toggle .ico-sun { display: block; }
:root[data-theme="light"] .theme-toggle .ico-moon { display: block; }
:root[data-theme="light"] .theme-toggle .ico-sun { display: none; }

.cart-btn { position: relative; }
.cart-count {
  position: absolute; top: -8px; right: -8px; min-width: 20px; height: 20px; padding: 0 5px;
  background: var(--accent); color: var(--on-accent); font-size: 0.72rem; font-weight: 700; border-radius: 999px;
  display: grid; place-items: center; border: 2px solid var(--bg);
  transform: scale(0); opacity: 0; transition: transform .25s cubic-bezier(.34,1.56,.64,1), opacity .2s;
}
.cart-count.show { transform: scale(1); opacity: 1; }

.burger { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-3); cursor: pointer; align-items: center; justify-content: center; }
.burger span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Forms ---------- */
form .field { margin-bottom: 16px; }
form label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 7px; color: var(--muted); }
form label .req { color: var(--accent-2); }
form input, form textarea, form select {
  width: 100%; padding: 13px 15px; background: var(--bg-3); border: 1px solid var(--line); border-radius: var(--radius-input);
  color: var(--text); font-family: inherit; font-size: .98rem; transition: border-color .2s, box-shadow .2s;
}
form input:focus, form textarea:focus, form select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
form textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-box { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(20px, 4vw, 40px); }
.form-hint { font-size: .86rem; color: var(--muted); margin-top: 16px; text-align: center; }

/* ---------- Footer ---------- */
footer { padding: 50px 0 30px; border-top: 1px solid var(--line); background: var(--bg); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
.foot-title { font-family: var(--display); font-weight: 700; margin-bottom: 14px; font-size: 1rem; color: var(--text); }
.foot-title-sub { margin-top: 18px; margin-bottom: 8px; }
.foot-grid address { font-style: normal; }
.foot-hours p { color: var(--muted); }
.foot-grid p, .foot-grid a { color: var(--muted); font-size: .92rem; }
.foot-grid a:hover { color: var(--accent-2); }
.foot-links { display: grid; gap: 8px; }
.foot-bottom { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--muted-2); font-size: .86rem; }

/* ---------- Cart drawer (shared) ---------- */
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); opacity: 0; visibility: hidden; transition: .3s; z-index: 200; }
.overlay.open { opacity: 1; visibility: visible; }
.drawer {
  position: fixed; top: 0; right: 0; height: 100%; width: min(420px, 100%); background: var(--bg-2);
  border-left: 1px solid var(--line); z-index: 210; transform: translateX(100%);
  /* zavřený panel se schová i před klávesnicí a čtečkami (visibility se přepne až po dojetí animace) */
  visibility: hidden; transition: transform .35s cubic-bezier(.4,0,.2,1), visibility 0s linear .35s;
  display: flex; flex-direction: column; box-shadow: -20px 0 60px -20px rgba(0,0,0,.6);
}
.drawer.open { transform: none; visibility: visible; transition-delay: 0s; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 22px; border-bottom: 1px solid var(--line); }
.drawer-head h2 { font-size: 1.3rem; }
.cart-items { flex: 1; overflow-y: auto; padding: 18px 22px; }
.cart-empty { text-align: center; color: var(--muted); padding: 60px 20px; }
.cart-empty svg { width: 54px; height: 54px; color: var(--muted-2); margin-bottom: 14px; }
.cart-line { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.cart-line img { width: 64px; height: 64px; border-radius: var(--radius-sm); object-fit: cover; border: 1px solid var(--line); flex: 0 0 auto; }
.cart-line .cl-info { flex: 1; min-width: 0; }
.cart-line .cl-info b { font-size: .96rem; }
.cart-line .cl-info small { color: var(--muted); display: block; }
.cart-line .cl-info .cl-no { color: var(--muted-2); font-size: .76rem; font-variant-numeric: tabular-nums; }
.cart-line .cl-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.cart-line .miniqty { display: flex; align-items: center; gap: 8px; }
.cart-line .miniqty button { width: 26px; height: 26px; border-radius: 7px; border: 1px solid var(--line); background: var(--bg-3); color: var(--text); cursor: pointer; }
.cart-line .price { font-weight: 700; color: var(--accent-2); }
.cl-remove { background: none; border: none; color: var(--muted-2); cursor: pointer; font-size: .8rem; }
.cl-remove:hover { color: var(--danger); }
.drawer-foot { padding: 22px; border-top: 1px solid var(--line); }
.drawer-foot .total { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px; }
.drawer-foot .total b { font-family: var(--display); font-size: 1.5rem; color: var(--accent-2); }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translate(-50%, 80px); background: var(--surface); border: 1px solid var(--ok); color: var(--text); padding: 14px 20px; border-radius: calc(var(--radius) * 0.75); z-index: 300; display: flex; align-items: center; gap: 10px; font-weight: 600; box-shadow: var(--shadow); opacity: 0; visibility: hidden; max-width: calc(100vw - 32px); transition: transform .35s cubic-bezier(.34,1.56,.64,1), opacity .25s, visibility 0s linear .35s; }
.toast.show { transform: translate(-50%, 0); opacity: 1; visibility: visible; transition-delay: 0s; }
.toast svg { width: 20px; height: 20px; color: var(--ok); }

/* ---------- Reveal on scroll (jen když běží JavaScript, jinak by obsah zůstal neviditelný) ---------- */
.js .reveal { opacity: 0; transform: translateY(var(--reveal-y)); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Shared mobile rules ---------- */
@media (max-width: 680px) {
  .nav-links, .nav-actions .btn span.hd { display: none; }
  .burger { display: flex; }
  .nav-links.mobile-open {
    display: flex; flex-direction: column; position: fixed; top: var(--header-h); left: 0; right: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--line); padding: 14px; gap: 4px; z-index: 99;
  }
  .nav-links.mobile-open a { padding: 13px 16px; }
  .form-row { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

/* Světlý motiv: výraznější aktivní položka menu */
:root[data-theme="light"] .nav-links a.active { background: var(--accent-soft); box-shadow: inset 0 -3px 0 0 var(--accent); }

/* Sociální sítě (patička) */
.socials { display: flex; gap: 10px; margin-top: 8px; }
.socials a { width: 44px; height: 44px; border-radius: var(--radius-btn); border: 1px solid var(--line); background: var(--surface); display: grid; place-items: center; transition: .2s; }
.socials a:hover { border-color: var(--accent); color: var(--accent-2); transform: translateY(calc(var(--lift-sm) * 1.5)); }
.socials a svg { width: 20px; height: 20px; }
.foot-grid .socials { margin-top: 16px; }
.foot-grid .socials a { color: var(--text); }
@media (max-width: 680px) { .foot-grid > div:last-child { grid-column: 1 / -1; } }

/* Filtr kategorií (galerie, produkty) */
.gallery-filter { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 32px; }
.gallery-filter button {
  padding: 8px 16px; border-radius: var(--radius-chip); border: 1px solid var(--line); background: var(--bg-3); color: var(--muted);
  font-weight: 600; font-size: .9rem; cursor: pointer; transition: .2s;
}
.gallery-filter button.active, .gallery-filter button:hover { border-color: var(--accent); color: var(--accent-2); background: var(--accent-soft); }

/* Dokumenty v patičce (obchodní podmínky, GDPR…) a popisky kontaktů */
.foot-legal { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: .9rem; }
.foot-legal a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.foot-legal a:hover { color: var(--accent-2); }
.foot-legal + .foot-bottom { margin-top: 20px; border-top: 0; padding-top: 0; }
.foot-grid .lbl { color: var(--muted-2); }

/* Časté dotazy (rozbalovací seznam) */
.faq-list { display: grid; gap: 12px; margin-top: 36px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); transition: border-color .2s; }
.faq-item[open] { border-color: var(--accent); }
.faq-item summary { cursor: pointer; list-style: none; padding: 16px 20px; font-weight: 600; display: flex; gap: 16px; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.5rem; line-height: 1; color: var(--accent-2); flex: 0 0 auto; }
.faq-item[open] summary::after { content: "−"; }
.faq-item summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm); }
.faq-a { padding: 0 20px 18px; color: var(--muted); }
.faq-a p + p { margin-top: 10px; }
.faq-a strong { color: var(--text); }

/* Střídavé pozadí sekcí na homepage (třídu přiděluje šablona) */
section.alt, footer.alt { background: var(--bg-2); }

/* Zaostření výřezu u fotek, které se do pevného poměru stran ořezávají (nastavuje se v administraci) */
.pos-top { object-position: center top; } .pos-bottom { object-position: center bottom; }
.pos-left { object-position: left center; } .pos-right { object-position: right center; }

/* ---------- Přístupnost ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip {
  position: fixed; top: 8px; left: 8px; z-index: 400; padding: 10px 16px; border-radius: var(--radius-sm); font-weight: 700;
  background: var(--accent); color: var(--on-accent); transform: translateY(-160%); transition: transform .2s;
}
.skip:focus { transform: none; }
/* Viditelný fokus pro klávesnici na všech ovládacích prvcích (barva přebírá z motivu) */
:focus-visible { outline: 3px solid var(--accent-2); outline-offset: 3px; }
.btn:focus-visible, .icon-btn:focus-visible, .burger:focus-visible, .nav-links a:focus-visible, .socials a:focus-visible { outline-offset: 2px; }
form input:focus-visible, form textarea:focus-visible, form select:focus-visible { outline: 3px solid var(--accent-2); outline-offset: 1px; }
form [aria-invalid="true"] { border-color: var(--danger); }
main { display: block; }
main:focus { outline: none; }

/* ---------- Formuláře: souhlas, past na roboty, stav odeslání ---------- */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
form label.check { display: flex; gap: 11px; align-items: flex-start; font-weight: 500; font-size: .9rem; color: var(--muted); cursor: pointer; margin: 0; }
form label.check input { width: 20px; height: 20px; padding: 0; margin-top: 1px; flex: 0 0 auto; accent-color: var(--accent); }
form label.check a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 3px; }
.form-status { margin: 0 0 14px; padding: 12px 14px; border-radius: var(--radius-sm); font-size: .92rem; font-weight: 600; border: 1px solid var(--line); background: var(--bg-3); }
.form-status[hidden] { display: none; }
.form-status.err { border-color: var(--danger); color: var(--danger); background: rgba(255, 91, 91, .08); }
:root[data-theme="light"] .form-status.err { color: #b3261e; background: rgba(179, 38, 30, .07); border-color: #b3261e; }
.form-success { text-align: center; padding: clamp(8px, 3vw, 24px) 8px; }
.form-success svg { width: 56px; height: 56px; color: var(--accent-2); margin-bottom: 12px; }
.form-success h3 { font-size: 1.5rem; margin-bottom: 10px; }
.form-success p { color: var(--muted); max-width: 460px; margin: 0 auto 22px; }
.noscript-note { margin-top: 24px; padding: 14px 16px; border: 1px dashed var(--line); border-radius: var(--radius-sm); color: var(--muted); }
.noscript-note a { color: var(--accent-2); text-decoration: underline; }
.not-found { text-align: left; }

/* ---------- Omezení pohybu (systémové nastavení návštěvníka, nebo animace vypnuté v administraci: <html data-motion="off">) ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; transition-delay: 0s !important; }
  .js .reveal { opacity: 1; transform: none; }
}
:root[data-motion="off"] { scroll-behavior: auto; --lift: 0px; --lift-sm: 0px; }
:root[data-motion="off"] *, :root[data-motion="off"] *::before, :root[data-motion="off"] *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; transition-delay: 0s !important; }
:root[data-motion="off"] .reveal { opacity: 1; transform: none; }