:root {
  --background: #0f1115;
  --surface: #151a22;
  --text: #ffffff;
  --muted: #a7b0be;
  --accent: #00a8e1;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--background);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

a {
  color: var(--text);
  text-decoration: none;
}

.muted-text {
  color: var(--muted);
}

.btn {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0.65rem 1rem;
  font-weight: 600;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #02131b;
}

.btn-primary-alt {
  background: #1e3340;
  color: #d9f5ff;
  border-color: rgba(0, 168, 225, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-color: var(--border);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}