@font-face {
  font-family: "CustomFont";
  src: url("fonts/Zelezna-Uniform.otf") format("opentype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: "CustomFont", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ============ VIDEO NA POZADÍ — vyplní celou obrazovku, ať má jakékoliv rozlišení ============ */
.bg-video {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: 0;
}

/* ============ LOGO ============ */
.logo {
  position: fixed;
  top: clamp(12px, 3vmin, 40px);
  left: 50%;
  transform: translateX(-50%);
  width: clamp(127px, calc(69px + 15vmin), 253px);
  height: auto;
  z-index: 1;
  filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.25));
}

/* ============ ODPOČET ============ */
.countdown {
  position: fixed;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}

.countdown__grid {
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.countdown__grid[hidden] {
  display: none;
}

.countdown__num,
.countdown__sep {
  color: #fff;
  font-size: clamp(5.5rem, calc(3rem + 11vmin), 13rem);
  font-weight: 400;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}