:root{
  --bg: #0C0F19;         
  --panel: #111423;           
  --panel-border: #262A40;

  /* Texty */
  --text: #E7ECFF;
  --muted: #c0c6e0;

  --accent: #FF46F7;          
  --accent-dark: #B300FF;     
  --accent-glow: rgba(255,70,247,.35);

  --blue: #72E7FF;

  --soft-shadow: 0 18px 48px rgba(0,0,0,.45);

  /* Písmo */
  --head: "Montserrat", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --body: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;

  --container: 1160px;     
  --gutter: 24px;
  --radius: 14px;
}


*{
  scroll-behavior: smooth;
  box-sizing: border-box
}
html,body{
  height: 100%
}
body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img{
  max-width: 100%;
  display: block
}
a{
  color: inherit;
  text-decoration: none
}
.container{
  width: 100%;
  max-width: calc(var(--container) + 2*var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter)
}

/* HEADER */
.header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(12,15,25,.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(114,120,180,.15);
}


.header__inner{
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand{
  display: flex;
  align-items: center;
  gap: 12px
}
.brand__logo{
  width: auto;
  height: 50px
}
.brand__name{
  font: 700 13px/1 var(--head);
  letter-spacing: .3px;
  text-transform: uppercase;
  color: #DDE4FF;
}

.nav{
  display: flex;
  align-items: center;
  gap: 18px
}
.nav__list{
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
  margin: 0;
  padding: 0
}
.nav__link{
  font: 700 12px/1 var(--head);
  letter-spacing: .25px;
  text-transform: uppercase;
  color: #D0D6F0;
  padding: 10px 4px;
  border-bottom: 2px solid transparent;
}
.nav__link:hover{
  color: #FFFFFF;
  border-bottom-color: rgba(255,255,255,.15)
}
.header__cta{
  margin-left: 8px
}

.nav__toggle{
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  position: relative;
  cursor: pointer;
}

.nav__toggle::before{
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 24px;   
  height: 4px;         
  background: #ffffff; 
  border-radius: 999px; 
  transform: translate(-50%, -50%);
  box-shadow:
    0 -8px 0 0 #ffffff,
    0  8px 0 0 #ffffff;
}

.nav__toggle:focus-visible{
  outline: 2px solid rgba(255,255,255,.8);
  outline-offset: 2px;
}


/* BUTTONS */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: 10px;
  border: 1px solid transparent;
  font: 800 14px/1 var(--head);
  letter-spacing: .2px;
  text-transform: uppercase;
  transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
}
.btn--primary{
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 10px 24px var(--accent-glow);
}
.btn--primary:hover{
  transform: translateY(-1px);
  filter: brightness(1.05)
}





/* ÚVOD */
.hero{
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 56px 0 72px;
  background:
    radial-gradient(900px 420px at 18% 8%, rgba(255,70,247,.12), transparent 60%),
    radial-gradient(900px 420px at 92% 12%, rgba(114,231,255,.12), transparent 60%),
    var(--bg);
  border-bottom: 1px solid rgba(114,120,180,.15);
}
.hero__grid{
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 36px;
  align-items: center;
}
.hero__eyebrow{
  margin: 0 0 16px;
  font: 700 12px/1 var(--head);
  letter-spacing: .32px;
  text-transform: uppercase;
  color: var(--blue);
}
.hero__title{
  margin: 0 0 20px;
  font: 900 54px/1.08 var(--head);
  letter-spacing: -.4px;
  text-shadow: 0 0 0 transparent;
}
.hero__title-accent{
  color: var(--accent)
}
.hero__cta{
  margin: 18px 0 26px
}

.hero__meta{
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.meta{
  display: flex;
  align-items: center;
  gap: 12px;
  background: #12162A;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 12px 14px;
}
.meta__icon{
  opacity: .9
}
.meta__label{
  font: 700 11px/1 var(--head);
  color: #AEB5D6;
  text-transform: uppercase;
  letter-spacing: .3px
}
.meta__value{
  font: 800 14px/1.2 var(--head);
  color: #FFFFFF
}

.hero__visual{
  background: radial-gradient(700px 220px at 50% 0%, rgba(255,70,247,.28), transparent 70%);
  border-radius: 15px;
  box-shadow: 0 0 30px #5d70feb4;
}
.hero__visual img{
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.06);
}




.section{
  padding: 80px 0
}
.section__title{
  margin: 0 0 22px;
  color: #FFFFFF;
  font: 900 34px/1.15 var(--head);
  letter-spacing: .2px;
  text-transform: uppercase;
}
.section__title--center{
  text-align: center
}
.section__title--underlined{
  position: relative;
  padding-bottom: 8px;
}
.section__title--underlined::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 90px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), transparent 80%);
  box-shadow: 0 0 12px var(--accent);
}




/* O UDÁLOSTI */
.about__grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start
}

.about__visual{
  box-shadow: 0 0 30px #5d70feb4;
  border-radius: 15px;
}

.about__visual img{
  border-radius: 15px;
  box-shadow: var(--soft-shadow)
}
.about__content p{
  margin: 0 0 12px;
  color: var(--muted)
}

/* AKCE */
.acts .section__title--underlined::after{
  width: 220px
}
.acts__grid{
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
  align-items: start;
  position: relative;
}
.act{
  background: transparent;
  border: 0;
  padding: 0;
}
.act__icon{
  margin-bottom: 10px;
  filter: drop-shadow(0 0 8px rgba(255,70,247,.25))
}
.act__heading{
  margin: 0 0 6px;
  color: #FFFFFF;
  font: 900 20px/1.2 var(--head);
  text-transform: uppercase;
  letter-spacing: .2px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
  padding-bottom: 4px;
}
.act__text{
  margin: 0;
  color: var(--muted)
}
.acts__more{
  grid-column: 1 / -1;
  margin-top: 6px;
  font: 800 14px/1 var(--head);
  color: #FFFFFF;
}
.acts__illustration{
  position: absolute;
  right: 0;
  bottom: -20px;
  transform: translateY(0);
  opacity: .9;
  pointer-events: none;
}

/* HARMONOGRAM */

.schedule__grid {
  margin-top: 0px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}


.timeline__item {
  position: relative;
  margin-bottom: 44px;
}

.timeline__time {
  top: 0;
  font: 800 22px/1 var(--head);
  color: var(--accent);
}

.timeline__block {
  padding-left: 0;
}

.timeline__heading {
  margin: 0 0 6px;
  font: 700 18px/1.4 var(--head);
  color: #E7ECFF;
}

.timeline__list {
  margin: 0;
  padding-left: 20px;
  list-style-type: disc;
}

.timeline__list li {
  color: var(--muted);
  font: 400 15px/1.5 var(--body);
  margin-bottom: 4px;
}

.timeline__list em {
  font-style: italic;
  color: var(--text);
}

.figure {
  margin: 0 50px 0 0;
}

.figure img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: var(--soft-shadow);
}

.figure__caption {
  margin-top: 10px;
  font: 400 14px/1.4 var(--body);
  color: var(--muted);
  text-align: right;
}






/* VYBAVENÍ */
.equipment__grid{
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 36px;
  align-items: start
}
.equipment__col--visual img{
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: var(--soft-shadow)
}







/* PARTNEŘI */
.partners{
  border-top: 1px solid rgba(114,120,180,.15);
  border-bottom: 1px solid rgba(114,120,180,.15)
}
.partners .section__title--underlined{
  padding-bottom: 14px
}
.partners .section__title--underlined::after{
  left: 50%;
  transform: translateX(-50%);
  width: 200px
}
.partners__group{
  margin: 18px 0 12px;
  font: 900 20px/1.2 var(--head);
  color: #FFFFFF;
  text-align: center;
  text-transform: uppercase;
}
.partners__cols{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px
}
.logo-grid{
  list-style: none;
  padding: 0;
  margin: 0 0 50px 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 22px;
  align-items: center;
  justify-items: center;
}
.logo-grid--support{
  grid-template-columns: repeat(3, minmax(0,1fr))
}
.logo-grid--media{
  grid-template-columns: repeat(2, minmax(0,1fr))
}







/* REGISTRACE + KONTAKTY */
.register__grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px
}
.form__row{
  margin-bottom: 14px
}
.form__label{
  display: block;
  margin: 0 0 6px 2px;
  font: 700 12px/1 var(--head);
  text-transform: uppercase;
  color: #AEB5D6;
  letter-spacing: .25px
}
.form__input, .form__textarea{
  width: 100%;
  background: #12162A;
  color: #FFFFFF;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 12px 14px;
  outline: none;
}
.form__input:focus, .form__textarea:focus{
  border-color: var(--accent)
}
.form__submit{
  width: 100%;
  height: 50px;
  margin-top: 8px
}

.contact{
  list-style: none;
  padding: 0;
  margin: 0
}
.contact__item + .contact__item{
  margin-top: 6px
}




/* FOOTER */
.footer{
  padding: 28px 0
}
.footer__copy{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center
}

/* RESPONZIVITA: 1440 / 1280 / 1024 / 768 / 600 / 430 */

@media (max-width: 1280px){
  .hero__title{
    font-size: 50px
  }
}

@media (max-width: 1024px){
  .about__grid, .schedule__grid, .equipment__grid, .register__grid{
    grid-template-columns: 1fr
  }
  .partners__cols{
    grid-template-columns: 1fr
  }
  .logo-grid{
    grid-template-columns: repeat(3, minmax(0,1fr))
  }
  .logo-grid--media{
    grid-template-columns: repeat(2, minmax(0,1fr))
  }
  .acts__grid{
    grid-template-columns: repeat(2,1fr)
  }
}

@media (max-width: 768px){
  .nav__list{
    display: none
  }
  .nav__toggle{
    display: inline-block
  }

  .header__cta{ 
    display: none; 
  }

  .nav__list--open{
    display: flex;
    position: absolute;
    right: var(--gutter);
    top: 72px;
    flex-direction: column;
    gap: 0;
    background: #0F1220;
    border: 1px solid rgba(114,120,180,.15);
    border-radius: 12px;
    overflow: hidden;
  }
  .nav__list--open .nav__link{
    padding: 14px 16px;
    display: block;
    border-bottom: 1px solid rgba(255,255,255,.06)
  }
  .hero{
    padding-top: 32px
  }
  .hero__grid{
    grid-template-columns: 1fr;
    gap: 24px
  }
  .acts__grid{
    grid-template-columns: 1fr
  }
  .acts__illustration{
    position: static;
    margin-top: 8px
  }
}

@media (max-width: 600px){
  .section{
    padding: 56px 0
  }
  .hero__title{
    font-size: 40px
  }
  .meta{
    padding: 10px 12px
  }
  .logo-grid{
    grid-template-columns: repeat(2, minmax(0,1fr))
  }
}

@media (max-width: 430px){
  .btn{
    height: 44px;
    padding: 0 18px;
    font-size: 12px
  }
  .hero__title{
    font-size: 34px
  }
  .section__title{
    font-size: 26px
  }
}


@media (min-width: 1440px){
  .container{
    max-width: calc(1240px + 2*var(--gutter))
  }
  .hero__title{
    font-size: 58px
  }
}