/* Neon Cyan Retro Theme */
:root {
  --bg: #0a0f1f;
  --panel: #0d1428;
  --text: #e6f7ff;
  --muted: #8fb8c9;
  --neon: #00e6ff;        /* core neon cyan */
  --neon-soft: #7df3ff;   /* lighter glow rim */
  --accent: #00bcd4;
}

/* Global */
* { box-sizing: border-box; }
html, body {
  height: 100%;
  background: radial-gradient(1200px 600px at 50% -200px, #102040 0%, var(--bg) 60%, #07101c 100%);
  color: var(--text);
  font-family: "Orbitron", "Share Tech Mono", system-ui, sans-serif;
}
a { color: var(--neon); text-decoration: none; }
a:hover { text-shadow: 0 0 6px var(--neon-soft), 0 0 14px var(--neon); }

/* Subtle scanlines + vignette for retro vibe */
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}
body::before {
  background-image:
    linear-gradient(rgba(255,255,255,0.03), rgba(255,255,255,0.03));
  background-size: 100% 2px;
  mix-blend-mode: overlay;
}
body::after {
  background:
    radial-gradient(1000px 500px at 50% 120%, rgba(0,0,0,0.6), transparent 60%),
    radial-gradient(500px 200px at -10% 50%, rgba(0,0,0,0.4), transparent 40%),
    radial-gradient(500px 200px at 110% 50%, rgba(0,0,0,0.4), transparent 40%);
}

/* Grid background option */
.grid-bg {
  position: relative;
  background:
    linear-gradient(rgba(0, 230, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 230, 255, 0.08) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px;
  background-position: center;
  box-shadow: inset 0 0 40px rgba(0, 230, 255, 0.08);
}

/* Neon glow helpers */
.neon {
  color: var(--neon);
  text-shadow:
    0 0 6px var(--neon-soft),
    0 0 16px var(--neon),
    0 0 32px rgba(0, 230, 255, 0.8);
}
.neon-soft {
  color: var(--text);
  text-shadow:
    0 0 4px rgba(0, 230, 255, 0.6),
    0 0 10px rgba(0, 230, 255, 0.5);
}

/* Headings */
h1, h2, h3 {
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
h1 { font-size: clamp(2rem, 4vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }

/* Panels / cards */
.panel {
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.9), rgba(13, 20, 40, 0.7));
  border: 1px solid rgba(0, 230, 255, 0.28);
  border-radius: 12px;
  padding: 16px 18px;
  backdrop-filter: blur(4px);
  box-shadow:
    0 0 15px rgba(0, 230, 255, 0.12),
    inset 0 0 12px rgba(0, 230, 255, 0.06);
}

/* Divider line */
.hr-neon {
  height: 1px;
  border: none;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 230, 255, 0.1) 20%,
    rgba(0, 230, 255, 0.6) 50%,
    rgba(0, 230, 255, 0.1) 80%,
    transparent 100%
  );
  box-shadow: 0 0 8px rgba(0, 230, 255, 0.6);
}

/* Buttons */
.btn {
  --glow: rgba(0, 230, 255, 0.85);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  color: var(--text);
  background: linear-gradient(180deg, #0f1830, #0b1427);
  border: 1px solid rgba(0, 230, 255, 0.35);
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  box-shadow:
    0 0 12px rgba(0, 230, 255, 0.22),
    inset 0 0 10px rgba(0, 230, 255, 0.12);
  transition: transform 120ms ease, box-shadow 160ms ease, border-color 160ms ease, filter 160ms ease;
}
.btn:hover {
  transform: translateY(-1px);
  border-color: var(--neon);
  box-shadow:
    0 0 18px var(--glow),
    inset 0 0 14px rgba(0, 230, 255, 0.22);
  filter: drop-shadow(0 0 8px var(--glow));
}
.btn:active {
  transform: translateY(0);
  box-shadow:
    0 0 12px rgba(0, 230, 255, 0.3),
    inset 0 0 18px rgba(0, 230, 255, 0.3);
}

/* Toggle / pill */
.pill {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 230, 255, 0.3);
  background: rgba(10, 16, 32, 0.7);
  box-shadow: inset 0 0 8px rgba(0, 230, 255, 0.12);
}

/* Inputs */
.input {
  width: 100%;
  padding: 10px 12px;
  color: var(--text);
  background: #0c1326;
  border: 1px solid rgba(0, 230, 255, 0.28);
  border-radius: 8px;
  outline: none;
  box-shadow: inset 0 0 10px rgba(0, 230, 255, 0.12);
}
.input:focus {
  border-color: var(--neon);
  box-shadow: 0 0 14px rgba(0, 230, 255, 0.5), inset 0 0 12px rgba(0, 230, 255, 0.2);
}

/* Neon tabs */
.tabs {
  display: flex;
  gap: 10px;
}
.tab {
  padding: 10px 12px;
  border: 1px solid rgba(0, 230, 255, 0.25);
  background: #0b1427;
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  transition: color 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}
.tab.active, .tab:hover {
  color: var(--text);
  border-color: var(--neon);
  box-shadow: 0 0 12px rgba(0, 230, 255, 0.35);
}

/* Neon border utility */
.neon-border {
  border: 1px solid rgba(0, 230, 255, 0.42);
  box-shadow: 0 0 14px rgba(0, 230, 255, 0.35), inset 0 0 10px rgba(0, 230, 255, 0.2);
  border-radius: 12px;
}

/* Animated glow pulse */
@keyframes glowPulse {
  0%   { text-shadow: 0 0 6px var(--neon-soft), 0 0 16px var(--neon), 0 0 28px rgba(0, 230, 255, 0.7); }
  50%  { text-shadow: 0 0 10px var(--neon-soft), 0 0 26px var(--neon), 0 0 42px rgba(0, 230, 255, 0.9); }
  100% { text-shadow: 0 0 6px var(--neon-soft), 0 0 16px var(--neon), 0 0 28px rgba(0, 230, 255, 0.7); }
}
.glow-pulse { animation: glowPulse 2.6s ease-in-out infinite; }

/* Retro underline */
.underline-neon {
  position: relative;
  display: inline-block;
}
.underline-neon::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
  box-shadow: 0 0 12px rgba(0, 230, 255, 0.6);
}

/* Retro container layout */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px;
}

/* Retro footer */
.footer {
  margin-top: 24px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.12em;
}

/* Optional: CRT flicker animation */
@keyframes crtFlicker {
  0%, 100% { opacity: 0.98; }
  50% { opacity: 1; }
}
.crt {
  animation: crtFlicker 6s linear infinite;
}