/* ===============================
   HERO SEKCE
   - Celostránkové pozadí s rozmazaným obrázkem
   - Velký, výrazný text uprostřed obrazovky
=============================== */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh; 
  overflow: hidden;
  z-index: 0;
  margin: 0;
  padding: 0;
}

.hero-section img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh; 
  object-fit: cover; 
  filter: blur(8px);
  z-index: -1;
}

/* ===============================
   NAVIGAČNÍ LIŠTA
   - Fixní pozice nahoře, tmavé pozadí s mírným stínem
   - Stylizované odkazy s efektem při najetí
   - Hamburger menu pro mobilní zařízení
=============================== */
.centered-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 9vw; 
  color: #f07d2c;
  text-align: center;
  font-weight: bold;
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
  white-space: nowrap;
  user-select: none;
  z-index: 1;
}
  
nav.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;       
  max-width: 100%;    
  background-color: #000000 !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
  z-index: 9999;
  margin: 0;           
  padding: 0.25rem 1rem;
  overflow: hidden;   
}
  
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='white' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
  
.navbar-toggler:focus {
  outline: none;
  box-shadow: none;
}
  
nav.navbar .container-fluid {
  padding-left: 0;
  padding-right: 0;
  max-width: 100%;
}
  
.navbar-toggler {
  border: none;
  outline: none;
  position: relative;
  width: 40px; 
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
  
.navbar-toggler-icon {
  width: 48px;
  height: 48px;
}
  
nav.navbar .navbar-brand img {
  height: 90px;
  margin: 5%;
  transition: height 0.3s ease;
}
  
nav.navbar .nav-link {
  font-weight: 600;
  font-size: 1.1rem;
  color: #ddd;
  transition: color 0.3s ease, transform 0.3s ease;
  padding: 0.5rem 1rem;
}
  
nav.navbar .nav-link:hover {
  color: #f07d2c;
  transform: scale(1.05);
}
  
nav.navbar .nav-link.active {
  color: #f07d2c;
  font-weight: 700;
  border-bottom: 2px solid #f07d2c;
}

 /* ===============================
  OBSAHOVÁ SEKCE
   - Tmavé pozadí, světlý text pro čitelnost
   - Výrazné oranžové nadpisy, zarovnaný text
=============================== */
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  background-color: #000; 
}

.content-section {
  background-color: #3a3a3a; 
  color: #ddd;
  padding: 80px 20px;
  text-align: left;
}


.content-section h2 {
  color: #f07d2c;
  font-size: 6rem;
  text-transform: uppercase;
  margin-bottom: 30px;
  text-align: center;
}

.content-section p {
  font-size: 2rem;
  line-height: 1.7;
  margin-top: 30px;
  margin-bottom: 15px;
  text-align: justify;
}

.content-section a {
  color: #f07d2c;
  text-decoration: none;
}

.content-section a:hover {
  text-decoration: underline;
}

.alt-bg {
  background-color: black;
}

/* ===============================
   BOXY S EFEKTY
   - Zaoblené rohy, stín, animace při přejetí
   - Speciální boxy s ikonami a barevným okrajem
=============================== */
.highlight-box {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 12px;
  padding: 2rem;
  height: 100%;
  color: #ddd;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
  text-align: center; 
}

.highlight-box:hover {
  transform: translateY(-5px);
}

.highlight-box h4 {
  color: #f07d2c;
  font-size: 1.5rem;
  margin-top: 1rem;
}

.highlight-box p {
  font-size: 1.1rem;
  color: w;
  text-align: center; 
  margin-bottom: 0; 
}

.icon-lg {
  font-size: 2.5rem;
  color: #f07d2c;
  display: block;      
  margin-bottom: 0.5rem;
}

.schedule-box {
  background: linear-gradient(145deg, #1a1a1a, #2a2a2a);
  border: 1px solid #333;
  border-left: 6px solid #f07d2c;
  border-radius: 10px;
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.6);
  position: relative;
}

.schedule-box:hover {
  transform: translateY(-5px);
}

.schedule-box h4 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #f07d2c;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.schedule-box h4::before {
  content: "\f017";
  font-family: "Bootstrap-icons";
  font-weight: normal;
  font-size: 1.5rem;
}

.schedule-box p {
  font-size: 1.25rem;
  line-height: 1.6;
  color: whitesmoke;
  margin: 0;
}

#program .row > .col-12:not(:last-child) {
  margin-bottom: 1rem;
}

#program h2 {
  font-size: 5rem;
  color: #f07d2c;
  text-transform: uppercase;
  margin-bottom: 3rem;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.6);
}

/* ===============================
   DALŠÍ SEKCE (interpreti, vybavení, kontakty)
   - Tmavé pozadí, padding a zarovnání pro přehlednost
   - Grid systém pro obrázky vybavení
   - Flexbox pro kontaktní sekci s responzivním přizpůsobením
=============================== */
#interpreti {
  background-color: #101010; 
  padding: 100px 50px;
}

#vybaveni {
  background-color: #101010; 
  padding: 30px 20px;
}

.vybaveni-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  justify-items: center;
  align-items: center;
  margin-top: 30px;
  margin-bottom: 30px;
}

.vybaveni-grid img {
  width: 100%;
  max-width: 300px; 
  height: auto;
  padding-top: 20%;
  border-radius: 10px;
}

#kontakty {
  background-color: #101010;
  padding: 5% 0 5% 0;
  border-radius: 10px;
  text-align: center;
  color: #ddd;
}

#kontakty h2 {
  color: #f07d2c;
  font-size: 4rem;
  margin-bottom: 40px;
  justify-content: center;
  text-transform: uppercase;
}

.kontakt-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.kontakt-item {
  flex: 1 1 1px;
  max-width: 300px;
  text-align: center;
}

.kontakt-item h4 {
  color: #ffffff;
  font-size: 2rem;
  margin-bottom: 15px;
}

.kontakt-item p {
  font-size: 1.5rem;
  line-height: 1.4;
  margin: 5px 0;
  text-align: center;
}

.kontakt-item a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.3s ease;
}

/* ===============================
   SPONZOŘI
   - Automatické horizontální scrollování log
   - Přechody a efekty při přejetí myší
=============================== */
.sponsor-carousel {
  overflow: hidden;
  padding: 2% 0 2%;
  position: relative;
  background-color: #202020;
}

.sponsor-section-full {
  border-top: 4px solid #ddd;
  border-bottom: 4px solid #ddd;
}

.sponsor-track {
  display: flex;
  gap: 2rem;
  animation: scrollSponsors 30s linear infinite;
}

.sponsor img {
  max-height: 200px;
  display: block;
  transition: transform 0.3s, filter 0.3s;
}

/* ===============================
   PATIČKA
   - Tmavé pozadí, světlý text, odkazy s efekty
=============================== */
.footer {
  background: black;
  color: #ddd;
  font-size: x-large;
}

.footer-logo-wrapper {
  display: flex;
  align-items: center;     
  height: 100%;
}

.footer-logo {
  max-height: 200px;   
  position: relative;
}

.footer-links a {
  color: #ddd;
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #f07d2c;
  transform: scale(1.05);
}

.footer-links a:hover::after {
  width: 100%;
  transform: scale(1.05);
}

.footer-divider {
  border: none;
  border-top: 1px solid white;
  opacity: 1;
  margin: 1rem 0;
}
/* ===============================
   ANIMACE SCROLLING SPONZORŮ
=============================== */
@keyframes scrollSponsors {
  0% {
    transform: translateX(0%);
  }
  100% {
    transform: translateX(-50%);
  }
}
/* ===============================
  RESPONSIVITA
  - Přizpůsobení fontů, layoutu a velikostí na menších zařízeních
=============================== */
@media (max-width: 768px) {
.centered-text {
  font-size: 12vw;
  white-space: normal;
  padding: 0 1rem;
}

.content-section h2 {
  font-size: 2.5rem;
}

.content-section p {
  font-size: 1.1rem;
  hyphens: auto;
}

#program h2 {
  font-size: 3rem;
  color: #f07d2c;
  text-transform: uppercase;
  margin-bottom: 3rem;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.6);
}

.vybaveni-grid img {
  width: 100%;
  max-width: 300px; 
  height: auto;
  padding-top: 20%;
  border-radius: 10px;
  transition: transform 0.3s ease;
}

#kontakty h2 {
  font-size: 3rem;
}

.kontakt-container {
  flex-direction: column;
  gap: 30px;
}

.kontakt-item {
  max-width: 100%;
  text-align: center;
}

.sponsor img {
  max-height: 100px;
  display: block;
  transition: transform 0.3s, filter 0.3s;
}

.footer-logo {
    max-height: 100px;
  }
}