:root { color-scheme: dark; }

body {
  background-color: #05070a;
  background-image:
    radial-gradient(60rem 60rem at 80% -10%, rgba(34, 211, 238, 0.12), transparent 60%),
    radial-gradient(50rem 50rem at -10% 20%, rgba(57, 255, 139, 0.10), transparent 60%),
    radial-gradient(40rem 40rem at 50% 120%, rgba(57, 255, 139, 0.08), transparent 60%);
  font-family: 'Inter', sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

/* Delikatna siatka w tle */
.grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 80%);
  pointer-events: none;
}

.glass {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.text-gradient {
  background: linear-gradient(90deg, #39ff8b, #22d3ee, #39ff8b);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shine 5s linear infinite;
}

/* Pulsujący glow pod CTA */
.btn-glow {
  position: relative;
  box-shadow: 0 0 0 0 rgba(57, 255, 139, 0.6);
  animation: pulseGlow 2.4s infinite;
}
@keyframes pulseGlow {
  0%   { box-shadow: 0 0 24px 0 rgba(57,255,139,0.45), 0 0 0 0 rgba(57,255,139,0.5); }
  70%  { box-shadow: 0 0 36px 8px rgba(57,255,139,0.55), 0 0 0 18px rgba(57,255,139,0); }
  100% { box-shadow: 0 0 24px 0 rgba(57,255,139,0.45), 0 0 0 0 rgba(57,255,139,0); }
}

.glow-line {
  background: linear-gradient(90deg, transparent, #39ff8b, #22d3ee, transparent);
}

/* ---------- PRELOADER ---------- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #05070a;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}
#preloader.hidden-loader {
  opacity: 0;
  visibility: hidden;
}
.loader-logo {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  animation: logoPulse 1.6s ease-in-out infinite;
}
@keyframes logoPulse {
  0%,100% { opacity: 0.55; transform: scale(0.98); text-shadow: 0 0 20px rgba(57,255,139,0.2); }
  50%     { opacity: 1;    transform: scale(1.02); text-shadow: 0 0 40px rgba(57,255,139,0.6); }
}
.loader-bar {
  width: min(320px, 70vw);
  height: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}
.loader-bar > span {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, #39ff8b, #22d3ee);
  box-shadow: 0 0 14px rgba(57,255,139,0.7);
  transition: width 0.2s ease;
}

::selection { background: rgba(57,255,139,0.3); }

/* Subtelny hover lift */
.lift { transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease; }
.lift:hover { transform: translateY(-6px); border-color: rgba(57,255,139,0.4); box-shadow: 0 20px 50px -20px rgba(57,255,139,0.35); }