:root {
  --bg: #e2e6e3;
  --surface: #f8f9f7;
  --surface-sunk: #eef1ee;
  --ink: #0f1614;
  --ink-2: #36403c;
  --muted: #6b7571;
  --line: #dce1dd;
  --line-strong: #c7cec9;

  --spruce: #080808;
  --spruce-2: #1b1b1b;
  --cert-ink: #f4f4f2;
  --cert-muted: #8b8b88;
  --accent: #1e6b5c;
  --accent-soft: #e2eee9;

  --warn-bg: #f4ede0;
  --warn-ink: #6f4a17;
  --danger: #a8402e;
  --danger-soft: #f6e6e2;

  --font-ui: 'Archivo', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  --r-field: 14px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.mono {
  font-family: var(--font-mono);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 56px;
  padding: 0 26px;
  border: 0;
  border-radius: 14px;
  background: var(--ink);
  color: #f3f6f4;
  font-weight: 600;
  font-size: 15px;
  font-stretch: 112%;
  letter-spacing: 0.005em;
  transition: background 0.2s, transform 0.15s var(--ease);
}

.btn:hover {
  background: var(--spruce);
}

.btn:active {
  transform: scale(0.985);
}

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