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

body {
  background-color: #020308;
  color: #f1f5f9;
  overflow-x: hidden;
  font-family: 'Plus Jakarta Sans', sans-serif;
}

/* 3D WebGL pozadinski kontejner */
#webgl-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: all;
}

/* Sloj sadržaja preko WebGL-a */
.content-layer {
  position: relative;
  z-index: 10;
  pointer-events: none;
}

/* Omogućavanje klikova na elemente interfejsa */
a, button, input, textarea, nav, .glass-card, .glass-nav {
  pointer-events: auto;
}

/* Navigacija sa staklenim efektom */
.glass-nav {
  background: rgba(2, 6, 18, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* Glassmorphism kartice */
.glass-card {
  background: rgba(8, 12, 28, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-card:hover {
  background: rgba(14, 20, 44, 0.8);
  border-color: rgba(56, 189, 248, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px -12px rgba(56, 189, 248, 0.15);
}

/* Svetlosni preliv preko dugmadi */
.sheen-btn {
  position: relative;
  overflow: hidden;
}

.sheen-btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: rotate(30deg);
  transition: all 0.75s ease;
}

.sheen-btn:hover::after {
  left: 120%;
}

/* Crni stroke i sjena oko gradijent/svijetlih slova za maksimalan kontrast */
.text-stroke-black {
  -webkit-text-stroke: 1.5px #020308;
  paint-order: stroke fill;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.9)) drop-shadow(0 0 16px rgba(0, 0, 0, 0.8));
}