/* ==========================================================================
   RABAPA — style.css
   Design systém: barvy, typografie, layout, animace.
   Komentáře jsou česky, aby ses v souboru snadno zorientoval/a i bez
   předchozí zkušenosti s programováním.
   ========================================================================== */

/* --- 1. DESIGN TOKENY -----------------------------------------------------
   Všechny barvy a fonty jsou definované na jednom místě (:root).
   Když budeš chtít změnit odstín, stačí upravit hodnotu tady a projeví
   se to v celém webu.
   -------------------------------------------------------------------- */
:root {
  /* Pozadí — hluboká indigová tma, ne čistě černá */
  --color-void: #0e0b1a;
  --color-void-2: #17122b;
  --color-void-3: #201a3a;

  /* Akcentní barvy — klubová paleta */
  --color-magenta: #ff2e88;
  --color-cyan: #00e5d4;
  --color-amber: #ffb800;

  /* Text */
  --color-text: #f2effa;
  --color-muted: #9c93b8;

  /* Fonty */
  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  /* Rozestupy a rozměry */
  --max-width: 1180px;
  --radius: 14px;

  /* Rychlost animací — respektuje prefers-reduced-motion, viz níže */
  --speed-fast: 150ms;
  --speed-normal: 350ms;
}

/* --- 2. RESET --------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-void);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
  /* Jemný barevný "mesh" gradient na pozadí celého webu */
  background-image:
    radial-gradient(circle at 15% 10%, rgba(255, 46, 136, 0.18), transparent 40%),
    radial-gradient(circle at 85% 0%, rgba(0, 229, 212, 0.14), transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(255, 184, 0, 0.10), transparent 50%);
  background-attachment: fixed;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* Viditelný focus stav pro ovládání klávesnicí — přístupnost */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Respektujeme uživatele, kteří preferují méně animací */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- 3. LAYOUT / KONTEJNERY -------------------------------------------- */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- 4. HLAVIČKA -------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(14, 11, 26, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Mini ekvalizér vedle loga — tři pulzující sloupečky */
.logo-eq {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
}

.logo-eq span {
  width: 4px;
  border-radius: 2px;
  display: block;
  animation: pulse 1.1s ease-in-out infinite;
}

.logo-eq span:nth-child(1) { background: var(--color-magenta); animation-delay: 0ms; }
.logo-eq span:nth-child(2) { background: var(--color-cyan); animation-delay: 180ms; }
.logo-eq span:nth-child(3) { background: var(--color-amber); animation-delay: 360ms; }

@keyframes pulse {
  0%, 100% { height: 5px; }
  50% { height: 18px; }
}

nav.main-nav ul {
  display: flex;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

nav.main-nav a {
  position: relative;
  padding-bottom: 4px;
  color: var(--color-muted);
  transition: color var(--speed-fast);
}

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

nav.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--color-cyan);
  transition: width var(--speed-fast);
}

nav.main-nav a:hover::after,
nav.main-nav a[aria-current="page"]::after {
  width: 100%;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* Přepínač jazyka CS / EN */
.lang-switch {
  display: flex;
  font-family: var(--font-mono);
  font-size: 13px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  overflow: hidden;
}

.lang-switch button {
  background: none;
  border: none;
  color: var(--color-muted);
  padding: 6px 12px;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  transition: background var(--speed-fast), color var(--speed-fast);
}

.lang-switch button.active {
  background: var(--color-cyan);
  color: var(--color-void);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 24px;
  cursor: pointer;
}

/* --- 5. HERO ------------------------------------------------------------ */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 22px;
}

/* Velké RA / BA / PA bloky — hlavní vizuální podpis webu */
.hero-mark {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hero-mark .syll {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(48px, 12vw, 110px);
  line-height: 1;
  padding: 6px 4px;
  border-radius: 8px;
  animation: eq-bounce 2.6s ease-in-out infinite;
}

.hero-mark .syll:nth-child(1) { color: var(--color-magenta); animation-delay: 0s; }
.hero-mark .syll:nth-child(2) { color: var(--color-cyan); animation-delay: 0.15s; }
.hero-mark .syll:nth-child(3) { color: var(--color-amber); animation-delay: 0.3s; }

@keyframes eq-bounce {
  0%, 100% { transform: translateY(0); }
  25% { transform: translateY(-10px); }
  50% { transform: translateY(0); }
}

.hero p.lead {
  max-width: 620px;
  margin: 0 auto;
  color: var(--color-muted);
  font-size: 19px;
}

/* --- 6. TRACKLIST / NAVIGAČNÍ KARTY -------------------------------------
   Domovská stránka odkazuje na podstránky formou "tracklistu" —
   každá položka = jedna "skladba" s číslem, názvem a popisem.
   -------------------------------------------------------------------- */
.tracklist {
  padding: 40px 0 120px;
}

.tracklist h2 {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.track {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.02);
  transition: transform var(--speed-fast), border-color var(--speed-fast), background var(--speed-fast);
}

.track:hover,
.track:focus-within {
  transform: translateX(6px);
  border-color: var(--track-accent, var(--color-cyan));
  background: rgba(255, 255, 255, 0.045);
}

.track-num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--track-accent, var(--color-cyan));
}

.track-body h3 {
  font-family: var(--font-display);
  font-size: 26px;
  margin-bottom: 6px;
}

.track-body p {
  color: var(--color-muted);
  font-size: 15px;
  max-width: 520px;
}

.track-arrow {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--track-accent, var(--color-cyan));
  transition: transform var(--speed-fast);
}

.track:hover .track-arrow {
  transform: translateX(4px);
}

.track.-records { --track-accent: var(--color-magenta); }
.track.-djs { --track-accent: var(--color-cyan); }
.track.-more { --track-accent: var(--color-amber); }

.track > a.track-link {
  position: absolute;
  inset: 0;
}

.track {
  position: relative;
}

/* --- 7. PODSTRÁNKY — hlavička sekce -------------------------------------- */
.page-hero {
  padding: 70px 0 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-hero .kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 64px);
  margin-bottom: 18px;
}

.page-hero p.lead {
  color: var(--color-muted);
  font-size: 19px;
  max-width: 620px;
}

.page.-records .kicker { color: var(--color-magenta); }
.page.-djs .kicker { color: var(--color-cyan); }
.page.-more .kicker { color: var(--color-amber); }

/* --- 8. OBECNÉ SEKCE / KARTY --------------------------------------------- */
section.content {
  padding: 60px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 24px;
  background: rgba(255, 255, 255, 0.02);
}

.card .tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  display: block;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 21px;
  margin-bottom: 8px;
}

.card p {
  color: var(--color-muted);
  font-size: 15px;
}

.placeholder-note {
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  padding: 24px;
  color: var(--color-muted);
  font-size: 14px;
  font-family: var(--font-mono);
}

/* --- 9. TLAČÍTKA ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--speed-fast), background var(--speed-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.-primary {
  background: var(--color-text);
  color: var(--color-void);
}

.btn.-outline {
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-text);
}

/* --- 10. PATIČKA ----------------------------------------------------------- */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 40px 0;
  margin-top: 40px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer p {
  color: var(--color-muted);
  font-size: 13px;
  font-family: var(--font-mono);
}

.footer-links {
  display: flex;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.footer-links a {
  color: var(--color-muted);
  transition: color var(--speed-fast);
}

.footer-links a:hover {
  color: var(--color-text);
}

/* --- 11. RESPONZIVITA ------------------------------------------------------ */
@media (max-width: 760px) {
  nav.main-nav {
    position: fixed;
    inset: 76px 0 0 0;
    background: var(--color-void);
    display: none;
    padding: 30px 24px;
  }

  nav.main-nav.open {
    display: block;
  }

  nav.main-nav ul {
    flex-direction: column;
    gap: 22px;
    font-size: 16px;
  }

  .nav-toggle {
    display: block;
  }

  .track {
    grid-template-columns: 50px 1fr;
  }

  .track-arrow {
    display: none;
  }
}