:root {
  --bg: #0d0d0f;
  --surface: #141418;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f0f0f0;
  --text-muted: #666;
  --accent: #00e5ff;
}

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

html,
body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

#app {
  height: 100%;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 10px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  width: 100%;
  transition:
    opacity 0.2s,
    box-shadow 0.2s;
}
.btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}
.btn-primary:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    border-color 0.2s,
    color 0.2s;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}