:root {
  --red: #ff1a1a;
  --red-dim: #8b0000;
  --red-light: #ff6b6b;
  --bg: #000;
  --panel: rgba(10, 0, 0, 0.78);
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--red);
  font-family: "Courier New", Courier, monospace;
  overflow: hidden;
}

#matrix {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
}

.panel {
  position: relative;
  z-index: 1;
  max-width: 560px;
  width: calc(100% - 32px);
  margin: 0 auto;
  top: 50%;
  transform: translateY(-50%);
  padding: 2.5rem 2rem;
  background: var(--panel);
  border: 1px solid var(--red-dim);
  box-shadow: 0 0 30px rgba(255, 0, 0, 0.35), inset 0 0 20px rgba(255, 0, 0, 0.1);
  backdrop-filter: blur(2px);
  text-align: center;
}

.kicker {
  font-size: 0.85rem;
  color: var(--red-light);
  opacity: 0.8;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

h1 {
  font-size: clamp(1.8rem, 6vw, 2.8rem);
  line-height: 1.2;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.glow {
  color: #fff;
  text-shadow:
    0 0 5px var(--red),
    0 0 15px var(--red),
    0 0 35px var(--red);
  animation: flicker 4s infinite;
}

.sub {
  color: var(--red-light);
  margin-bottom: 1.2rem;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.links a {
  display: block;
  padding: 0.8rem 1rem;
  color: var(--red);
  text-decoration: none;
  border: 1px solid var(--red-dim);
  text-align: left;
  transition: all 0.2s ease;
}

.links a:hover,
.links a:focus {
  background: var(--red);
  color: #000;
  box-shadow: 0 0 20px var(--red);
}

.prompt {
  opacity: 0.6;
  margin-right: 0.5rem;
}

.cursor {
  margin-top: 1.5rem;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@keyframes flicker {
  0%, 92%, 100% { opacity: 1; }
  93% { opacity: 0.4; }
  95% { opacity: 1; }
  96% { opacity: 0.6; }
}

@media (max-width: 480px) {
  .panel { padding: 2rem 1.2rem; }
}