/* ============================================================
   SuperSignalGeek — Static Landing Page
   Color palette pulled directly from the logo:
   Deep black center → steel blue → teal/electric at edges
   ============================================================ */

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

:root {
  --black:      #000000;
  --deep-navy:  #030b14;
  --mid-blue:   #0a2a4a;
  --teal-edge:  #0d5c73;
  --electric:   #1ab8d8;
  --steel:      #4da8c8;
  --white:      #e8f4f8;
}

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: var(--black);
  font-family: 'Rajdhani', sans-serif;
}

/* ── Radial gradient: teal/blue at edges, pure black at center ── */
.bg-radial {
  position: fixed;
  inset: 0;
  background: radial-gradient(
    ellipse 120% 100% at 50% 50%,
    var(--black)   0%,
    var(--black)   18%,
    var(--deep-navy) 38%,
    var(--mid-blue)  58%,
    var(--teal-edge) 78%,
    #0e6e8a        92%,
    #0c7d96        100%
  );
  z-index: 0;
}

/* ── Subtle scan lines for a technical feel ── */
.scan-lines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.12) 2px,
    rgba(0, 0, 0, 0.12) 4px
  );
  z-index: 1;
  pointer-events: none;
}

/* ── Faint perspective grid at the edges ── */
.grid-overlay {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(26, 184, 216, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 184, 216, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, transparent 35%, black 100%);
  z-index: 2;
  pointer-events: none;
}

/* ── Center stage layout ── */
.center-stage {
  position: relative;
  z-index: 10;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

/* ── Logo wrapper with animated glow ring ── */
.logo-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.glow-ring {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(26, 184, 216, 0.08) 0%,
    rgba(26, 184, 216, 0.04) 50%,
    transparent 70%
  );
  animation: pulse-glow 3.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes pulse-glow {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

.logo {
  width: min(480px, 80vw);
  height: auto;
  animation: logo-in 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
  filter: drop-shadow(0 0 32px rgba(26, 184, 216, 0.35))
          drop-shadow(0 0 8px rgba(77, 168, 200, 0.2));
}

@keyframes logo-in {
  from {
    opacity: 0;
    transform: scale(0.88) translateY(12px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ── Tagline ── */
.tagline {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 300;
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  letter-spacing: 0.22em;
  color: var(--steel);
  text-transform: uppercase;
  text-align: center;
  padding: 0 1rem;
  animation: fade-up 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

/* ── Coming Soon badge ── */
.coming-soon {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: clamp(0.65rem, 1.5vw, 0.8rem);
  letter-spacing: 0.45em;
  color: var(--electric);
  text-transform: uppercase;
  border: 1px solid rgba(26, 184, 216, 0.4);
  padding: 0.5rem 1.6rem;
  border-radius: 2px;
  background: rgba(26, 184, 216, 0.06);
  animation: fade-up 1.4s cubic-bezier(0.16, 1, 0.3, 1) 0.5s both;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .glow-ring {
    width: 280px;
    height: 280px;
  }
  .tagline {
    letter-spacing: 0.1em;
  }
}