:root{
  --purple: #5B1D88;
  --gold: #FFB703;
  --white: #ffffff;

  --shadow: 0 25px 80px rgba(0,0,0,.55);
}

*{
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body{
  height: 100%;
  font-family: 'Inter', sans-serif;
  overflow: hidden; /* brak scrolla */
  background: #000;
  color: var(--white);
}

/* TŁO */
.bg{
  position: fixed;
  inset: 0;
  background: url("assets/background.png") center/cover no-repeat;
  transform: scale(1.05);
}

/* OVERLAY W KLIMACIE LOGO */
.overlay{
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 60% 40%, rgba(255,183,3,.25), transparent 50%),
    radial-gradient(circle at 30% 30%, rgba(91,29,136,.45), transparent 60%),
    linear-gradient(to bottom, rgba(0,0,0,.4), rgba(0,0,0,.75));
  backdrop-filter: blur(3px);
}

/* CENTROWANIE */
.container{
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 40px;
  text-align: center;
  padding: 20px;
}

/* LOGO */
.logo{
  width: min(420px, 85vw);
  filter: drop-shadow(0 20px 40px rgba(0,0,0,.6));
}

/* LINKI */
.links{
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

/* PRZYCISKI */
.btn{
  display: flex;
  align-items: center;
  gap: 10px;

  padding: 14px 22px;
  border-radius: 14px;

  text-decoration: none;
  font-weight: 600;
  letter-spacing: .3px;

  background: linear-gradient(180deg, var(--purple), #3f1263);
  border: 1px solid rgba(255,183,3,.4);

  color: var(--white);

  box-shadow: 0 12px 35px rgba(0,0,0,.35);
  transition: all .2s ease;
}

/* HOVER: unoszenie + cień + rozjaśnienie */
.btn:hover{
  transform: translateY(-5px);
  box-shadow: 0 20px 55px rgba(0,0,0,.5);
  filter: brightness(1.12);
  border-color: var(--gold);
}

/* IKONY */
.icon{
  width: 20px;
  height: 20px;
  color: var(--gold);
  display: flex;
}

.icon svg{
  width: 100%;
  height: 100%;
}

/* MOBILE */
@media (max-width: 600px){
  .links{
    flex-direction: column;
  }
}