:root {
  /* Barevná paleta */
  --bg-primary-dark: #003b49;    /* Tmavě modrozelená */
  --bg-primary-light: #1d4289;   /* Středně modrá */
  --accent-yellow: #ffc845;      /* Pergamenově žlutá */
  --text-light: #ffffff;
  --text-dark: #003b49;
  --card-bg: rgba(255, 255, 255, 0.15);
  --card-border: rgba(255, 255, 255, 0.2);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-primary-dark), var(--bg-primary-light));
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  margin: 0;
}

/* Glassmorphism efekt */
.container {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px); /* Safari */
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  width: 100%;
  max-width: 400px;
  padding: 2rem;
  text-align: center;
  box-sizing: border-box;
}

h1 {
  color: var(--accent-yellow);
  margin-bottom: 0.5rem;
  font-size: 1.8rem;
}

p {
  color: var(--text-light);
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* Tlačítka */
.buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

button {
  background-color: var(--accent-yellow);
  color: var(--text-dark);
  border: none;
  padding: 12px 24px;
  font-size: 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
  min-width: 120px;
}

button:hover {
  background-color: #e0b43e; /* Tmavší žlutá */
}

button:active {
  transform: scale(0.98);
}

/* Responzivita pro mobil */
@media (max-width: 600px) {
  .container {
    padding: 1.5rem;
  }
  .buttons {
    flex-direction: column;
  }
  button {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
  }
}