* {
  box-sizing: border-box;
}

:root {
  --font-sans: system-ui, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, monospace;

  --bg: #080a0d;
  --bg-raised: #10151b;
  --bg-panel: rgba(15, 20, 26, 0.9);
  --bg-panel-solid: #121820;
  --bg-control: #18202a;
  --bg-control-hover: #202b37;

  --text: #e7edf4;
  --text-muted: #94a2b5;
  --text-soft: #b9c4d2;
  --heading: #f8fbff;

  --border: #263340;
  --border-strong: #344557;
  --accent: #7dd87d;
  --accent-blue: #74a7ff;
  --accent-amber: #e7c75a;
  --danger: #ff6868;

  --shadow: 0 1rem 2.5rem rgba(0, 0, 0, 0.28);
  --radius-sm: 0.35rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  color-scheme: dark;
  font: 16px/1.45 var(--font-sans);
  color: var(--text);
  background: var(--bg);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(21, 31, 40, 0.76), rgba(8, 10, 13, 0) 22rem),
    var(--bg);
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--heading);
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  font-size: 2.35rem;
  line-height: 1.06;
}

h2 {
  font-size: 1rem;
  line-height: 1.2;
}

h3 {
  font-size: 0.98rem;
  line-height: 1.25;
}

h4 {
  font-size: 0.9rem;
  line-height: 1.25;
}

button {
  min-width: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  background: var(--bg-control);
  color: var(--text);
  font: inherit;
  font-size: 0.76rem;
  font-weight: 900;
  cursor: pointer;
}

button:hover {
  background: var(--bg-control-hover);
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

#root {
  min-height: 100svh;
}