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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--color-canvas);
  color: var(--color-ink);
}

.auth-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--color-staff-bg);
}

.auth-card {
  background: var(--color-canvas);
  border: var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 2.5rem;
  width: 100%;
  max-width: 22rem;
}

.auth-brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-theme);
  margin-bottom: 2rem;
}

.auth-brand span {
  color: var(--color-ink-medium);
  font-weight: 400;
}

.auth-heading {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.auth-subheading {
  font-size: 0.875rem;
  color: var(--color-ink-medium);
  margin-bottom: 1.75rem;
  line-height: 1.5;
}

.auth-subheading strong {
  color: var(--color-ink);
  font-weight: 500;
}

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

.auth-input {
  width: 100%;
  padding: 0.6rem 0.85rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-ink);
  background: var(--color-canvas);
  border: 1px solid var(--color-ink-lighter);
  border-radius: 8px;
  outline: none;
  transition: border-color 120ms, box-shadow 120ms;
}

.auth-input::placeholder {
  color: var(--color-ink-light);
}

.auth-input:focus {
  border-color: var(--color-theme);
  box-shadow: 0 0 0 3px var(--color-theme-lightest);
}

.auth-input.code-input {
  font-family: ui-monospace, monospace;
  font-size: 1.25rem;
  letter-spacing: 0.15em;
  text-align: center;
  text-transform: uppercase;
}

.auth-submit {
  width: 100%;
  padding: 0.65rem 1rem;
  font-size: 0.9375rem;
  font-family: inherit;
  font-weight: 500;
  color: #fff;
  background: var(--color-theme);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: filter 120ms;
}

.auth-submit:hover {
  filter: brightness(1.08);
}

.auth-submit:active {
  filter: brightness(0.95);
}

.auth-alert {
  font-size: 0.875rem;
  color: var(--color-negative);
  background: oklch(var(--lch-red-lightest));
  border: 1px solid oklch(var(--lch-red-lighter));
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  margin-bottom: 1rem;
}

.auth-footer {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-ink-medium);
}

.auth-footer a {
  color: var(--color-theme);
  text-decoration: none;
}

.auth-footer a:hover {
  text-decoration: underline;
}