:root {
  --primary: #0D47FF;
  --secondary: #3D8BFF;
  --accent: #82B1FF;
  --dark: #0A1122;
  --light: #FFFFFF;
  --text: #1E293B;
  --glass: rgba(255,255,255,0.18);
  --border-glass: rgba(255,255,255,0.32);
  --shadow: 0 10px 40px rgba(13,71,255,0.25);
  --radius: 18px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", "Poppins", sans-serif;
}

body {
  background: linear-gradient(140deg, #4B0082, #1A1F3C, #0A1122);
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow-x: hidden;
}

/* LOGO 3D EFFECT */
.logo-container {
  display: inline-block;
  perspective: 1600px;
  position: relative;
}

.logo {
  width: 260px;
  transform-style: preserve-3d;
  transition: transform 0.6s ease, filter 0.6s ease;
  filter: drop-shadow(0 14px 28px rgba(13,71,255,0.35));
}

.logo:hover {
  transform: rotateY(20deg) rotateX(8deg) translateZ(50px) scale(1.07);
  filter: drop-shadow(0 24px 60px rgba(61,139,255,0.7));
}

/* NEON AURA BEHIND LOGO */
.logo-container::after {
  content: "";
  position: absolute;
  inset: -30px;
  border-radius: 50%;
  transform: translateZ(-25px);
  background: radial-gradient(rgba(13,71,255,0.32), transparent 72%);
  animation: neonPulse 3.5s ease-in-out infinite;
  z-index: -1;
}

@keyframes neonPulse {
  0%,100% {
    opacity: 0.35;
    transform: translateZ(-25px) scale(1);
  }
  50% {
    opacity: 0.65;
    transform: translateZ(-25px) scale(1.8);
  }
}

/* SHINE LINE OVER LOGO */
.logo-shine {
  position: relative;
  display: inline-block;
  overflow: hidden;
  border-radius: var(--radius);
}

.logo-shine::before {
  content: "";
  position: absolute;
  top: 0;
  left: -150%;
  width: 90%;
  height: 100%;
  transform: skewX(-28deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shineMove 4s ease-in-out infinite;
  z-index: 2;
}

@keyframes shineMove {
  0% { left: -150% }
  60% { left: 160% }
  100% { left: 160% }
}

/* 3D FLOATING TEXT */
.logo-text {
  font-size: 2.8rem;
  font-weight: 900;
  color: #fff;
  margin-top: 22px;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  transform: translateZ(32px);
  text-shadow:
    2px 2px 6px rgba(0,0,0,0.2),
    0 0 20px rgba(13,71,255,0.6),
    0 0 40px rgba(61,139,255,0.4);
  animation: textFloat 5s ease-in-out infinite;
  text-align: center;
}

@keyframes textFloat {
  0%,100% { transform: translateY(0) translateZ(32px); opacity: 0.95; }
  50% { transform: translateY(-6px) translateZ(48px); opacity: 1; }
}

/* OPTIONAL: BUTTON 3D CTA FOR SITE */
.btn-cta-3d {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--light);
  padding: 16px 44px;
  border-radius: 13px;
  border: none;
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
  transform-style: preserve-3d;
  box-shadow: 0 6px 0 #0837CC, 0 16px 34px rgba(13,71,255,0.45);
  transition: 0.25s ease;
  margin-top: 30px;
}

.btn-cta-3d:hover {
  transform: translateY(-5px) translateZ(30px) scale(1.05);
  box-shadow: 0 6px 0 #0837CC, 0 20px 40px rgba(13,71,255,0.6);
}

.btn-cta-3d:active {
  transform: translateY(6px) scale(0.97);
  box-shadow: 0 3px 0 #0837CC, 0 9px 22px rgba(13,71,255,0.35);
}

/* RESPONSIVE FIX */
@media (max-width: 768px) {
  .logo { width: 200px; }
  .logo-text { font-size: 2rem; }
  .btn-cta-3d { padding: 14px 32px; font-size: 1rem; }
}