/* Hallmark · pre-emit critique: P4 H4 E5 S4 R5 V4 */
/* Hallmark · macrostructure: Workbench · tone: utilitarian · anchor hue: 0
 * nav: N9 Edge-aligned · footer: none
 * enrichment: none · audience: self · use: edit reminder text
 */

html, body { overflow-x: clip; }

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

html {
  background: var(--color-paper);
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.55;
  padding-inline: max(var(--page-gutter), env(safe-area-inset-left), env(safe-area-inset-right));
  padding-bottom: max(var(--space-lg), env(safe-area-inset-bottom));
}

.skip {
  position: absolute;
  inset-inline-start: var(--space-md);
  inset-block-start: var(--space-md);
  transform: translateY(-200%);
  background: var(--color-ink);
  color: var(--color-paper);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
  z-index: var(--z-toast);
}
.skip:focus { transform: none; }

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

a { color: var(--color-ink); }
a:hover { color: var(--color-accent); }

.nav-edge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  padding-block: var(--space-md) var(--space-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-paper);
}

.wordmark {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--color-ink);
  font-style: normal;
  white-space: nowrap;
}

.status {
  margin: 0;
  flex: 1;
  min-width: 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.master {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding-inline-end: var(--space-sm);
  margin-inline-end: var(--space-2xs);
  border-inline-end: 1px solid var(--color-rule);
}
.master span {
  font-size: var(--text-xs);
  color: var(--color-ink-2);
  white-space: nowrap;
}

main {
  flex: 1;
  width: min(100%, 44rem);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  min-height: 0;
}

#cfg {
  flex: 1;
  width: 100%;
  min-height: 18rem;
  padding: var(--space-sm);
  border: 1px solid var(--color-rule-2);
  border-radius: var(--radius);
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.55;
  resize: none;
  outline: 2px solid transparent;
  outline-offset: 1px;
  transition: border-color var(--dur-micro) var(--ease-out),
              background-color var(--dur-micro) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  #cfg:hover {
    background: var(--color-paper-2);
    border-color: var(--color-accent);
  }
}
#cfg:focus-visible {
  border-color: var(--color-ink-2);
}
#cfg[aria-invalid="true"] {
  border-color: var(--color-error);
}

.help {
  min-height: 1lh;
  margin: 0;
  font-size: var(--text-xs);
  color: var(--color-muted);
}
.help.is-error { color: var(--color-error); }

.hint {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-xs);
  max-width: 72ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--control-h);
  padding-inline: var(--space-md);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color var(--dur-micro) var(--ease-out),
              background-color var(--dur-micro) var(--ease-out),
              color var(--dur-micro) var(--ease-out),
              transform 100ms var(--ease-out);
}
.btn:hover { border-color: var(--color-accent); }
.btn:active { transform: translateY(1px); }
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn[data-state="loading"] { opacity: 0.7; cursor: wait; }
.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}
.btn-primary:hover {
  background: var(--color-ink-2);
  border-color: var(--color-accent);
  color: var(--color-paper);
}
.btn-primary:disabled {
  background: var(--color-paper-3);
  color: var(--color-muted);
  border-color: var(--color-rule);
}

.btn:focus-visible,
.switch:focus-visible,
#cfg:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.switch {
  position: relative;
  width: 2.25rem;
  height: 1.35rem;
  flex-shrink: 0;
  border: 1px solid var(--color-rule);
  border-radius: 999px;
  background: var(--color-paper-2);
  cursor: pointer;
  transition: border-color var(--dur-micro) var(--ease-out),
              background-color var(--dur-micro) var(--ease-out);
}
.switch::before {
  content: "";
  position: absolute;
  inset-block: -12px;
  inset-inline: -4px;
}
.switch:hover { border-color: var(--color-accent); }
.switch[aria-checked="true"] {
  background: var(--color-ink);
  border-color: var(--color-ink);
}
.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: var(--color-paper);
  transition: transform var(--dur-short) var(--ease-out);
}
.switch[aria-checked="true"]::after {
  transform: translateX(0.88rem);
}

.toast {
  position: fixed;
  right: var(--page-gutter);
  bottom: var(--space-lg);
  z-index: var(--z-toast);
  max-width: min(28rem, calc(100% - 2rem));
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  background: var(--color-paper);
  color: var(--color-ink);
  box-shadow: var(--shadow-whisper);
}
.toast.is-error { border-color: var(--color-error); }

@media (max-width: 40rem) {
  .status { flex-basis: 100%; order: 3; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 150ms !important;
    transition-duration: 150ms !important;
  }
  .btn:active { transform: none; }
}