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

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--mc-ink);
  font-family: var(--mc-font);
  font-size: var(--mc-text-md);
  font-weight: 400;
  line-height: 1.5;
  background: var(--mc-canvas);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--mc-font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--mc-ink);
}

h1 { font-size: var(--mc-text-xl); }
h2 { font-size: var(--mc-text-lg); }
h3 { font-size: var(--mc-text-md); }
h4 { font-size: var(--mc-text-base); }

p {
  margin: 0;
}

a {
  color: var(--mc-sea);
  text-decoration: none;
  transition: color var(--mc-ease);
}

a:hover {
  color: var(--mc-sea-deep);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  margin: 0;
}

button {
  cursor: pointer;
}

code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: var(--mc-text-sm);
}

:focus-visible {
  outline: none;
  box-shadow: var(--mc-focus);
  border-radius: var(--mc-radius-sm);
}

.text-muted {
  color: var(--mc-ink-muted);
}

.text-sm {
  font-size: var(--mc-text-sm);
}

.mono {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: var(--mc-text-sm);
  color: var(--mc-ink-muted);
}

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

.stack {
  display: grid;
  gap: var(--mc-s4);
  align-content: start;
}

.stack--sm {
  gap: var(--mc-s2);
}

.stack--lg {
  gap: var(--mc-s6);
}

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--mc-s2);
}

.row--between {
  justify-content: space-between;
}

.row--tight {
  flex-wrap: nowrap;
  gap: var(--mc-s1);
}

.grid {
  display: grid;
  gap: var(--mc-s4);
}

.mt-4 {
  margin-top: var(--mc-s4);
}

.mt-5 {
  margin-top: var(--mc-s5);
}

@media (min-width: 640px) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.field-error,
.field-validation-error {
  display: block;
  color: var(--mc-danger);
  font-size: var(--mc-text-sm);
  margin-top: var(--mc-s1);
}

.field-error:empty,
.field-validation-error:empty,
.field-validation-valid {
  display: none;
  margin: 0;
}

.validation-summary-errors ul {
  margin: 0;
  padding-left: 1.1rem;
}

.validation-summary-valid {
  display: none;
}

.input-validation-error {
  border-color: var(--mc-danger);
}