/* ====== Proměnné ====== */
:root{
  --bg:#1E1A18;              /* jednotné pozadí pro celý web */
  --accent:#BE4B21;
  --accent-dark:#8B3416;
  --text:#F5E9D3;
  --muted:#CDBFAB;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --radius:10px;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --container:1120px;
}

/* ====== Reset & základ ====== */
*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--text);text-decoration:none}
a:focus,button:focus,.btn:focus{outline:2px dashed var(--accent);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:fixed;left:16px;top:16px;width:auto;height:auto;background:var(--accent);color:var(--text);padding:8px 12px;border-radius:6px;z-index:9999}

/* ====== Hlavička ====== */
.site-header{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(20,15,13,.95); /* sjednoceno s patičkou */
  backdrop-filter:saturate(140%) blur(6px);
  font-size:0.95rem;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.brand{font-weight:700;font-size:1rem;letter-spacing:.04em;line-height:1}
.nav{display:flex;gap:10px;align-items:center}
.nav a{padding:6px 10px;border-radius:6px;color:var(--text);font-weight:500;opacity:.9;transition:opacity .2s,background .2s}
.nav a:hover{opacity:1;background:rgba(255,255,255,.06)}
.nav .cta{background:var(--accent);color:var(--text);font-weight:700}
.nav .cta:hover{background:var(--accent-dark)}

/* Burger (CSS-only) */
.nav-toggle{display:none}
.burger{display:none;width:36px;height:28px;cursor:pointer;position:relative}
.burger span{position:absolute;left:0;right:0;height:3px;background:var(--text);border-radius:3px;transform-origin:center;transition:transform .25s,opacity .2s,top .25s}
.burger span:nth-child(1){top:4px}
.burger span:nth-child(2){top:12px}
.burger span:nth-child(3){top:20px}

/* ====== Hero (jen homepage) ====== */
.hero{padding:64px 0 48px}
.hero-inner{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.book-cover{justify-self:center;width:min(90%,380px);border-radius:6px;box-shadow:var(--shadow)}
.hero-text{text-align:center;max-width:720px;justify-self:center}
h1{font-size:clamp(2rem,3.2vw,3rem);line-height:1.15;margin:0 0 8px}
.tagline{font-style:italic;color:var(--muted);margin:0 0 14px}
.intro{margin:0 auto;opacity:.95}
.actions{display:flex;gap:12px;justify-content:center;margin-top:18px;flex-wrap:wrap}

/* ====== Page header (podstránky) ====== */
.page-header{text-align:center;padding:80px 0 50px}
.page-header h1{font-size:clamp(1.8rem,3vw,2.4rem);margin-bottom:.6rem}
.page-header .lead{font-size:1.05rem;color:var(--muted);max-width:680px;margin:0 auto;line-height:1.5}

/* ====== Obsahové sekce ====== */
.about{padding:56px 0;text-align:center}
.about h2{font-size:clamp(1.4rem,2.4vw,2rem);margin:0 0 14px}
.about p{max-width:820px;margin:0 auto}
.about-actions{display:flex;gap:12px;justify-content:center;margin-top:18px;flex-wrap:wrap}

/* ====== Parametry ====== */
.meta-grid{margin:1.5rem auto 0;max-width:680px}
.meta-row{display:flex;justify-content:space-between;padding:6px 0}
.meta-row dt{font-weight:600}
.meta-row dd{margin:0;color:var(--muted)}

/* ====== Tlačítka ====== */
.btn{display:inline-block;padding:10px 16px;border-radius:8px;background:var(--accent);color:var(--text);font-weight:700;letter-spacing:.2px;transition:transform .05s,background .2s,box-shadow .2s;box-shadow:0 6px 18px rgba(190,75,33,.25)}
.btn:hover{background:var(--accent-dark)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;border:1px solid rgba(245,233,211,.55);box-shadow:none}
.btn.ghost:hover{background:rgba(255,255,255,.08)}

/* ====== Patička ====== */
.site-footer{background:rgba(20,15,13,.95);color:var(--text)}
.footer-inner{display:flex;gap:16px;justify-content:center;align-items:center;padding:20px;flex-wrap:wrap}
.site-footer a{border-bottom:1px dotted rgba(245,233,211,.5)}
.site-footer a:hover{border-bottom-color:transparent}

/* ====== Breakpointy ====== */
@media (min-width:860px){
  .hero-inner{grid-template-columns:420px 1fr;gap:40px}
  .hero-text{text-align:left}
  .actions{justify-content:flex-start}
}

/* ----- Mobilní navigace ----- */
@media (max-width:859.98px){
  .burger{display:block}
  .nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;
    background:rgba(30,26,24,.98);
    box-shadow:0 10px 24px rgba(0,0,0,.35);
  }
  .nav a{padding:14px 20px;border-radius:0;opacity:1}
  .nav a:hover{background:rgba(255,255,255,.06)}
  .nav .cta{margin:8px 20px 12px;text-align:center;border-radius:8px}
  .nav-toggle:checked ~ .nav{display:flex}
  .nav-toggle:checked + .burger span:nth-child(1){top:12px;transform:rotate(45deg)}
  .nav-toggle:checked + .burger span:nth-child(2){opacity:0}
  .nav-toggle:checked + .burger span:nth-child(3){top:12px;transform:rotate(-45deg)}
}