/* === Globální styly === */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background-size: cover;
  background-position: center center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  transition: background-image 1s ease-in-out;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #000000;
  min-height: 100vh;
  position: relative;
}

/* Opravím body::before, aby nezesvětlovalo pozadí zbytečně bílou průhledností */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255, 255, 255, 0); /* nebo úplně vymazat */
  pointer-events: none;
  z-index: -1;
}

/* Přidej pro bg-layer explicitní background-color jako fallback */
.bg-layer {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  transition: opacity 12s ease-in-out, transform 12s ease-in-out;
  opacity: 0;
  transform: scale(1);
  z-index: -2; /* pod body::before */
}

.bg-layer.visible {
  opacity: 1;
  transform: scale(1);
}

.bg-layer.fading-out {
  opacity: 0;
  transform: scale(1.5); /* zvětšení na 150% při slábnutí */
}

.bg-layer.fading-in {
  opacity: 1;
  transform: scale(1.5); /* začíná na 150% */
  animation: scaleDown 12s forwards;
}

@keyframes scaleDown {
  to {
    transform: scale(1);
  }
}

/* === Hlavní kontejner === */
main {
  position: relative;
  max-width: 900px;
  margin: 3rem auto;
  padding: 2rem;
  background: transparent;
}

main::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: 0; right: 0;
  background: rgba(255, 255, 255, 0.8);
  z-index: -1;
  border-radius: 12px;
}

/* === Nadpisy === */
h1 {
  text-align: center;
  margin-bottom: 2.5rem;
  color: #000000;
  font-size: 2.4rem;
  position: relative;
}

h1::after {
  font-size: 2rem;
  color: #c6a700;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -1.4rem;
}

h2 {
  color: #000000;
  margin-top: 0;
}

/* === Obsah === */
ul {
  padding-left: 1.4rem;
  margin-top: 1rem;
}

li {
  margin-bottom: 0.6rem;
}

p, li {
  font-size: 1.05rem;
}

strong {
  color: #2f2f2f;
}

em {
  color: #4a2c2a;
  font-style: italic;
}

a {
  color: #6a3a3a;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover,
a:focus {
  color: #c6a700;
  text-decoration: underline;
}

/* === Tlačítka === */
button {
  display: block;
  width: 100%;
  margin: 15px 0;
  padding: 16px 24px;
  font-size: 18px;
  border: none;
  border-radius: 8px;
  background-color: #333333;
  color: white;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease;
  font-family: inherit;
}

button:hover {
  background-color: #666666;
  transform: scale(1.05);
}

/* === Dlaždice aktivace === */
.activation-grid {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin: 60px auto;
  flex-wrap: wrap;
}

.tile {
  width: 220px;
  height: 160px;
  border-radius: 16px;
  padding: 20px;
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s ease, background-color 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  background-color: rgba(51, 51, 51, 0.7);
  color: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.4);
  font-family: inherit;
}

.tile:hover {
  background-color: rgba(51, 51, 51, 0.85);
  transform: scale(1.05);
}

/* Barevné varianty dlaždic */
.female-tile {
  background-color: rgba(76, 175, 80, 0.7);
}

.female-tile:hover {
  background-color: rgba(76, 175, 80, 0.85);
}

.male-tile {
  background-color: rgba(192, 57, 43, 0.7);
}

.male-tile:hover {
  background-color: rgba(192, 57, 43, 0.85);
}

.integration-tile {
  background-color: rgba(0, 0, 102, 0.7);
}

.integration-tile:hover {
  background-color: rgba(0, 0, 102, 0.85);
}

/* Obsah dlaždic */
.tile-title {
  font-size: 20px;
  margin-bottom: 10px;
  color: white;
}

.tile-description {
  font-size: 14px;
  color: white;
}

/* === Sekce kroků === */
.steps-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 auto;
  width: 100%;
  max-width: 900px;
}

.step-tile {
  display: block;
  width: 100%;
  padding: 16px 24px;
  font-size: 18px;
  border-radius: 8px;
  background-color: #333333;
  color: white;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.3s ease, transform 0.3s ease;
  text-align: center;
  text-decoration: none;
}

.step-tile:hover {
  background-color: #666666;
  transform: scale(1.05);
}

.step-wrapper p {
  font-size: 1rem;
  color: #000000;
  margin-top: 4px;
  margin-bottom: 12px;
  width: 100%;
  box-sizing: border-box;
}

/* === Popis modulu === */
.module-description {
  font-size: 1.05rem;
  color: #1f2d28;
  margin-bottom: 30px;
}

/* === Responsivita === */
@media (max-width: 900px) {
  main {
    padding: 1rem;
    max-width: 100%;
    margin: 2rem auto;
  }

  h1 {
    font-size: 1.8rem;
  }

  button {
    font-size: 16px;
    padding: 14px 20px;
  }
}

/* === Formulářový profil === */
form#profileForm {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: transparent;
  padding: 0;
  max-width: 900px;
  margin: 0 auto;
}

form#profileForm label {
  font-weight: bold;
  color: #000;
  margin-bottom: 4px;
}

form#profileForm input[type="text"],
form#profileForm input[type="datetime-local"] {
  padding: 10px;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-family: inherit;
  color: #000;
  width: 100%;
  box-sizing: border-box;
}

.radio-group {
  display: flex;
  gap: 20px;
  align-items: center;
  margin: 10px 0;
  color: #000;
  font-weight: normal;
}

#profileOutput {
  max-width: 900px;
  margin: 20px auto;
  background: transparent;
  padding: 0;
  color: #000;
  white-space: pre-wrap;
  font-family: monospace;
  font-size: 1rem;
}

#confirmation-top {
  text-align: center;
  font-weight: bold;
  color: #2a7ae2;
  margin-top: 15px;
  min-height: 1.5em;
  transition: opacity 0.4s ease;
  opacity: 0;
}