:root {
  color-scheme: light;
  --paper: #e8e6e1;
  --ink: #1c1b19;
  --mute: #5c5954;
  --rule: #c4c1ba;
  --accent: #3d5a56;
  --error: #8a2525;
  --font: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.page {
  width: min(100% - 2rem, 38rem);
  margin: 0 auto;
  padding: clamp(5rem, 18vh, 10rem) 0 3rem;
}

.invitation h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1;
}

.promise {
  max-width: 25rem;
  margin: 1.25rem 0 2.5rem;
  font-size: clamp(1.25rem, 4vw, 1.65rem);
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.signup-form {
  display: flex;
  max-width: 34rem;
}

.signup-form input {
  min-width: 0;
  flex: 1;
  border: 1px solid var(--rule);
  border-right: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  padding: 0.85rem 1rem;
  outline: none;
}

.signup-form input:focus {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.signup-form button {
  border: 1px solid var(--accent);
  border-radius: 0;
  background: var(--accent);
  color: white;
  padding: 0.85rem 1.15rem;
  font-weight: 600;
}

.signup-form button:hover,
.signup-form button:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
}

.signup-form button:disabled {
  opacity: 0.65;
  cursor: wait;
}

.privacy-note,
.error {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--mute);
}

.privacy-note a {
  color: inherit;
  text-underline-offset: 0.2em;
}

.privacy-note a:hover,
.privacy-note a:focus-visible {
  color: var(--ink);
}

.error {
  color: var(--error);
}

.follow-up {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
}

.confirmation {
  margin: 0 0 1.5rem;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  margin-bottom: 1rem;
  font-size: 1rem;
}

.role-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.role-options button {
  border: 1px solid var(--rule);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  padding: 0.65rem 0.85rem;
}

.role-options button:hover,
.role-options button:focus-visible,
.role-options button[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

.skip {
  margin-top: 1rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--mute);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.role-status {
  min-height: 1.5em;
  margin: 1rem 0 0;
  color: var(--mute);
  font-size: 0.85rem;
}

.privacy-page {
  width: min(100% - 2rem, 38rem);
  margin: 0 auto;
  padding: 4rem 0;
}

.privacy-page h1 {
  margin: 2.5rem 0 0.25rem;
  font-size: 2.25rem;
  letter-spacing: -0.04em;
}

.privacy-updated {
  margin: 0 0 2.5rem;
  color: var(--mute);
  font-size: 0.85rem;
}

.privacy-page section {
  margin-top: 2rem;
}

.privacy-page h2 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
}

.privacy-page p {
  margin: 0;
  line-height: 1.65;
}

.privacy-page a,
.back-link {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

.back-link {
  font-size: 0.9rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

[hidden] {
  display: none !important;
}

@media (max-width: 34rem) {
  .signup-form {
    flex-direction: column;
    gap: 0.65rem;
  }

  .signup-form input {
    border-right: 1px solid var(--rule);
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}