body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: black;
  color: white;
  text-align: center;
}

/* Kontejner s rozmazaným pozadím */
.top-background {
  position: relative;
  height: 75vh;
  overflow: hidden;
}

/* Rozmazané pozadí jako samostatná vrstva */
.background-blur {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('background.jpg');
  background-size: cover;
  background-position: center 60%;
  filter: blur(4px);
  z-index: 0;
}

/* Vrstvený obsah (navigace + text) */
.top-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center; /* Vertikální centrování */
  align-items: center;
  text-align: center;
  padding: 2rem;
}

.top-nav {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 25px;
  z-index: 2;
}

.top-nav a.nav-item {
  color: white;
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  padding: 8px 18px;
  border-radius: 24px;
  transition: transform 0.3s ease;
  user-select: none;
}
.top-nav a.nav-item:hover {
  transform: scale(1.1);
  color: white;
  cursor: pointer;
}

/* Část 1 - zvýrazněná "Úvod" */
.top-nav a.nav-item:first-child {
  border: 2px solid rgba(255, 255, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 24px;
}

.intro-section {
  max-width: 400px;
  margin: 0 auto 60px;
}

.intro-section h2 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.copy-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 10px 20px;
  cursor: pointer;
  user-select: none;
  color: white;
  transition: background-color 0.3s ease;
}

.copy-box:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.copy-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.05em;
  user-select: text;
}

.copy-icon {
  width: 20px;
  height: 20px;
  fill: white;
}

.notification {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: black;
  color: white;
  padding: 12px 30px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 16px;
  user-select: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1000;
}

.notification.show {
  opacity: 1;
  pointer-events: auto;
}
#notification {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: rgba(0,0,0,0.8);
  color: white;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  z-index: 9999;
}

.black-section {
  padding: 40px 20px;
  background-color: black;
  color: white;
  font-size: 20px;
}
.intro-image {
  width: 150px;
  height: auto;
  margin-bottom: 5px;
  display: block;
  margin-left: 0;
}
.intro-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px; /* mezera mezi slepicí a textem */
  flex-wrap: wrap; /* umožní skládání na menších obrazovkách */
  text-align: center;
}
.about-section {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  padding: 60px 20px;
  background-color: black;
  color: white;
  gap: 40px;
}

.about-image img {
  width: 350px;
  max-width: 100%;
  border-radius: 16px;
  object-fit: cover;
  margin-top: 141px; /* posune dolů */
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
}

.about-text {
  max-width: 600px;
  text-align: left;
}

.section-title {
  font-size: 38px;
  font-weight: bold;
  margin-bottom: 30px;
  position: relative;
  display: inline-block;
  text-align: center;
}

.section-title::after {
  content: "";
  display: block;
  margin: 12px auto 0;
  width: 80px;
  height: 4px;
  background-color: #00bfff; /* modrá čára */
  border-radius: 4px;
}

.about-subtitle {
  font-size: 28px;
  margin-bottom: 15px;
}

.blue-text {
  color: #00bfff;
}

.about-text p {
  font-size: 18px;
  line-height: 1.6;
  color: #ddd;
}
#particle-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: 1; /* nad pozadím, pod obsahem */
  pointer-events: none; /* Nechytá kliknutí */
}
.top-content {
  position: relative;
  z-index: 2;
}
.info-section {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
  padding: 80px 20px;
  background-color: #111;
  text-align: center;
}

.info-box {
  width: 350px;
  background-color: #1a1a1a;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-box:hover {
  transform: translateY(-10px);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
}

.info-box img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.info-title {
  font-size: 2rem;
  margin: 20px 0 10px;
  font-weight: bold;
  color: white;
}

.underline {
  height: 4px;
  width: 80px;
  margin: 0 auto 20px;
  border-radius: 2px;
}

.blue {
  background-color: #1e90ff;
}

.green {
  background-color: #2ecc71;
}

.purple {
  background-color: #9b59b6;
}

.info-box p {
  color: #ccc;
  font-size: 1rem;
  line-height: 1.6;
  padding: 0 20px 20px;
}
.gold {
  background-color: gold; /* nebo #FFD700, pokud chceš přesnější */
}
.footer {
  text-align: center;
  padding: 20px;
  background-color: #111;
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 14px;
}

.footer .creator {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.footer .skin-head {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  image-rendering: pixelated;
}