@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Share+Tech+Mono&display=swap');

  :root {
    --space: #02040a;
    --panel: rgba(10, 20, 45, 0.88);
    --border: rgba(80, 160, 255, 0.22);
    --accent: #4fa8ff;
    --accent2: #ff8c42;
    --accent3: #a78bfa;
    --success: #42ffb8;
    --text: #c8deff;
    --dim: #9ab8d8;
    --glow: 0 0 24px rgba(79, 168, 255, 0.35);
  }

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

  body {
    background: var(--space);
    color: var(--text);
    font-family: 'Share Tech Mono', monospace;
    min-height: 100vh;
    line-height: 1.7;
  }

  /* Hvězdné pozadí */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      radial-gradient(1px 1px at 8% 12%, white 0%, transparent 100%),
      radial-gradient(1px 1px at 22% 58%, rgba(255,255,255,0.7) 0%, transparent 100%),
      radial-gradient(1.5px 1.5px at 38% 28%, white 0%, transparent 100%),
      radial-gradient(1px 1px at 54% 78%, rgba(255,255,255,0.5) 0%, transparent 100%),
      radial-gradient(1px 1px at 68% 18%, white 0%, transparent 100%),
      radial-gradient(1px 1px at 83% 48%, rgba(255,255,255,0.6) 0%, transparent 100%),
      radial-gradient(1px 1px at 13% 83%, rgba(255,255,255,0.4) 0%, transparent 100%),
      radial-gradient(1px 1px at 91% 8%, white 0%, transparent 100%),
      radial-gradient(1px 1px at 58% 43%, rgba(255,255,255,0.35) 0%, transparent 100%),
      radial-gradient(1px 1px at 33% 70%, white 0%, transparent 100%),
      radial-gradient(1px 1px at 76% 86%, rgba(255,255,255,0.5) 0%, transparent 100%),
      radial-gradient(2px 2px at 48% 4%, rgba(200,220,255,0.7) 0%, transparent 100%),
      radial-gradient(1px 1px at 86% 63%, white 0%, transparent 100%);
    pointer-events: none;
    z-index: 0;
  }

  .wrap {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 56px 28px 100px;
  }

  /* Hlavička */
  header {
    text-align: center;
    margin-bottom: 64px;
  }

  .logo {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    letter-spacing: 0.08em;
    color: #fff;
    text-shadow: 0 0 30px rgba(79,168,255,0.6), 0 0 60px rgba(79,168,255,0.3);
    margin-bottom: 10px;
  }
  .logo span { color: #ffd700; text-shadow: 0 0 30px rgba(255,215,0,0.7); }

  .subtitle {
    color: var(--dim);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 6px;
  }

  .authors {
    font-size: 0.62rem;
    color: var(--dim);
    margin-top: 10px;
  }
  .authors a { color: var(--dim); text-decoration: none; }
  .authors a:hover { color: var(--accent); }

  .badge-link {
    display: inline-block;
    margin-top: 20px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    padding: 10px 22px;
    border: 1px solid var(--accent);
    color: var(--accent);
    text-decoration: none;
    border-radius: 3px;
    background: rgba(79,168,255,0.06);
    transition: all 0.2s;
  }
  .badge-link:hover {
    background: rgba(79,168,255,0.14);
    box-shadow: 0 0 18px rgba(79,168,255,0.3);
  }

  /* Kroky */
  .steps { display: flex; flex-direction: column; gap: 24px; }

  .step {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 28px 32px;
    backdrop-filter: blur(8px);
    box-shadow: var(--glow), inset 0 1px 0 rgba(255,255,255,0.04);
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 0 24px;
  }

  .step-num {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent);
    opacity: 0.5;
    line-height: 1;
    padding-top: 4px;
  }

  .step-body {}

  .step-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: 10px;
  }

  .step p {
    font-size: 0.82rem;
    color: var(--text);
    margin-bottom: 10px;
  }
  .step p:last-child { margin-bottom: 0; }

  .step ul {
    list-style: none;
    margin: 8px 0 10px 0;
  }
  .step ul li {
    font-size: 0.8rem;
    color: var(--text);
    padding: 3px 0 3px 16px;
    position: relative;
  }
  .step ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 0.65rem;
    top: 5px;
  }

  .note {
    margin-top: 10px;
    padding: 10px 14px;
    background: rgba(79,168,255,0.07);
    border-left: 2px solid rgba(79,168,255,0.4);
    border-radius: 0 3px 3px 0;
    font-size: 0.75rem;
    color: var(--dim);
  }

  /* Screenshoty */
  .screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 14px;
  }
  
  .video { grid-template-columns: 1fr; max-width: 500px; margin: auto;}
  .video video {max-width: 100%}
  
  .screenshots.single { grid-template-columns: 1fr; max-width: 620px; margin: auto;}
  .screenshots.wide { grid-template-columns: 1fr; }
  .screenshots.compact {
    grid-template-columns: minmax(220px, 320px);
    justify-content: center;
  }
  .screenshots.compact .screenshot img {
    max-width: 250px;
    margin: 0 auto;
  }

  .screenshot {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    background: rgba(0,0,0,0.3);
  }
  .screenshot img {
    width: 100%;
    height: auto;
    display: block;
  }
  .screenshot figcaption {
    font-size: 0.65rem;
    color: var(--dim);
    padding: 6px 10px;
    border-top: 1px solid var(--border);
    text-align: center;
  }

  .highlight { color: var(--accent); }
  .highlight2 { color: var(--accent2); }
  .highlight3 { color: var(--success); }

  kbd {
    display: inline-block;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    padding: 1px 7px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: rgba(255,255,255,0.05);
    color: var(--text);
  }

  /* Sekce FAQ */
  .section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.65rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 56px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
  }

  .faq { display: flex; flex-direction: column; gap: 2px; }

  .faq-item {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .faq-q {
    padding: 14px 20px;
    font-size: 0.8rem;
    color: #fff;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    user-select: none;
    transition: background 0.2s;
  }
  .faq-q:hover { background: rgba(79,168,255,0.06); }
  .faq-arrow { color: var(--accent); font-size: 0.65rem; flex-shrink: 0; transition: transform 0.2s; }
  .faq-item.open .faq-arrow { transform: rotate(90deg); }

  .faq-a {
    display: none;
    padding: 0 20px 16px;
    font-size: 0.78rem;
    color: var(--dim);
    line-height: 1.7;
    border-top: 1px solid var(--border);
    padding-top: 14px;
  }
  .faq-item.open .faq-a { display: block; }

  /* Tipy */
  .tips {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
    margin-top: 0;
  }

  .tip {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 16px 18px;
    font-size: 0.76rem;
    color: var(--dim);
    line-height: 1.6;
  }
  .tip strong { display: block; color: #fff; font-family: 'Orbitron', sans-serif; font-size: 0.62rem; letter-spacing: 0.1em; margin-bottom: 6px; }

  /* Průvodce ikonami */
  .icon-guide { display: flex; flex-direction: column; gap: 0; margin-top: 14px; border: 1px solid var(--border); border-radius: 4px; overflow: hidden; margin-bottom: 20px; }
  .icon-row { display: grid; grid-template-columns: 56px 1fr; align-items: center; border-bottom: 1px solid var(--border); }
  .icon-row:last-child { border-bottom: none; }
  .icon-cell { display: flex; align-items: center; justify-content: center; padding: 12px; border-right: 1px solid var(--border); background: rgba(0,0,0,0.2); }
  .icon-preview { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; border: 0px solid var(--border); border-radius: 3px; background: rgba(10,20,45,0.9); padding: 0px; vertical-align: middle; margin: 0 0px; margin-bottom: 3px; }
  .icon-preview svg { width: 100%; height: 100%; fill: var(--dim); stroke: var(--dim); }
  .icon-desc { padding: 10px 14px; font-size: 0.78rem; color: var(--text); line-height: 1.55; }
  .icon-desc strong { display: block; color: #fff; font-family: 'Orbitron', sans-serif; font-size: 0.62rem; letter-spacing: 0.1em; margin-bottom: 4px; }
  .icon-note { display: block; margin-top: 4px; font-size: 0.7rem; color: var(--dim); }

  @media (max-width: 580px) {
    .step { grid-template-columns: 1fr; gap: 8px 0; }
    .step-num { font-size: 1.4rem; opacity: 0.5; }
    .wrap { padding: 36px 18px 80px; }
  }