:root {
  color-scheme: light dark;
  --background: #ffffff;
  --text: #101010;
  --muted: #777777;
  --field: #f4f4f2;
  --field-hover: #eeeeeb;
  --button: #101010;
  --button-text: #ffffff;
  --focus: #6f6f6f;
  --error: #d94747;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  background: var(--background);
}

body {
  min-height: 100svh;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

main {
  display: grid;
  min-height: 100svh;
  place-items: center;
  padding: 1rem;
}

form {
  display: flex;
  gap: 0.5rem;
  width: min(100%, 27rem);
}

input,
button {
  height: 3.25rem;
  font: inherit;
  font-size: 0.9375rem;
  border: 0;
  border-radius: 0.875rem;
  outline: none;
}

input {
  min-width: 0;
  flex: 1;
  padding: 0 1rem;
  color: var(--text);
  background: var(--field);
  transition: background-color 160ms ease, box-shadow 160ms ease;
}

input:hover:not(:disabled) {
  background: var(--field-hover);
}

input::placeholder {
  color: var(--muted);
  opacity: 1;
}

input:focus-visible {
  background: var(--background);
  box-shadow: inset 0 0 0 1.5px var(--focus);
}

input[aria-invalid="true"] {
  box-shadow: inset 0 0 0 1.5px var(--error);
}

input:disabled {
  color: var(--muted);
  opacity: 0.62;
}

button {
  position: relative;
  display: grid;
  width: 6.5rem;
  flex: 0 0 6.5rem;
  place-items: center;
  overflow: hidden;
  padding: 0 1rem;
  color: var(--button-text);
  font-weight: 600;
  background: var(--button);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 160ms ease, opacity 160ms ease, background-color 220ms ease;
}

button span {
  grid-area: 1 / 1;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:active:not(:disabled) {
  transform: translateY(0) scale(0.975);
}

button:focus-visible {
  box-shadow: 0 0 0 3px var(--background), 0 0 0 5px var(--focus);
}

button:disabled {
  cursor: default;
}

button[data-state="pending"] {
  cursor: wait;
  opacity: 0.62;
}

button[data-state="success"] {
  animation: sent 520ms cubic-bezier(0.2, 0.85, 0.3, 1.25);
}

button[data-state="success"] span {
  animation: sent-label 420ms cubic-bezier(0.2, 0.85, 0.3, 1.15);
}

button[data-state="error"] {
  animation: error-shake 280ms ease-out;
}

.visually-hidden,
.trap {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@keyframes sent {
  0% {
    transform: scale(1);
  }
  42% {
    transform: scale(0.94);
  }
  72% {
    transform: scale(1.04);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes sent-label {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes error-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  33% {
    transform: translateX(-0.2rem);
  }
  66% {
    transform: translateX(0.2rem);
  }
}

@media (max-width: 370px) {
  form {
    gap: 0.375rem;
  }

  button {
    width: 5.75rem;
    flex-basis: 5.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #090909;
    --text: #f4f4f4;
    --muted: #8d8d8d;
    --field: #171717;
    --field-hover: #1d1d1d;
    --button: #f4f4f4;
    --button-text: #0d0d0d;
    --focus: #989898;
    --error: #ff7777;
  }
}