* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--gq-color-text);
  background: var(--gq-color-paper);
  font-family: var(--gq-font-ui);
  font-size: var(--gq-text-md);
  line-height: 1.55;
}

button,
input {
  font: inherit;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
  padding-inline: max(1rem, calc((100% - 90rem) / 2));
  border-bottom: var(--gq-border-thin) solid var(--gq-color-separator);
}

.brand,
.product-name {
  margin: 0;
  font-size: var(--gq-text-sm);
}

.brand {
  color: var(--gq-color-text-muted);
}

.brand-link,
.site-footer a,
.locale-nav a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
}

.product-name {
  font-weight: 650;
}

.locale-nav {
  margin-inline-start: auto;
}

.locale-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: var(--gq-space-2);
  color: var(--gq-color-text-muted);
}

.task-canvas {
  width: min(calc(100% - 2rem), 48rem);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 9vh, 5rem) 3rem;
}

.page-heading {
  max-width: 42rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 2.25rem);
  line-height: 1.15;
}

.intro {
  margin-block: var(--gq-space-3) var(--gq-space-8);
  color: var(--gq-color-text-muted);
}

.availability {
  margin: 0 0 var(--gq-space-4);
  padding: var(--gq-space-3) var(--gq-space-4);
  border-inline-start: 3px solid var(--gq-color-info-text);
  color: var(--gq-color-info-text);
  background: var(--gq-color-info-surface);
}

.availability[hidden] {
  display: none;
}

.timer-workspace {
  padding-block: var(--gq-space-6) var(--gq-space-8);
  border-block: var(--gq-border-thin) solid var(--gq-color-separator);
}

.duration-control label {
  display: block;
  margin-bottom: var(--gq-space-2);
  font-weight: 650;
}

.duration-entry {
  display: flex;
  align-items: center;
  gap: var(--gq-space-3);
  width: fit-content;
  max-width: 100%;
}

.duration-entry input {
  width: 8ch;
  max-width: 100%;
  min-height: 2.75rem;
  padding: var(--gq-space-2) var(--gq-space-3);
  border: var(--gq-border-thin) solid var(--gq-color-control-border);
  border-radius: var(--gq-radius-control);
  color: var(--gq-color-ink);
  background: var(--gq-color-surface);
  font-variant-numeric: tabular-nums;
}

.duration-entry input:disabled {
  color: var(--gq-color-text-muted);
  background: var(--gq-color-paper-subtle);
}

.duration-entry input[aria-invalid="true"] {
  border-color: var(--gq-color-danger-text);
}

.field-help,
.field-error {
  margin: var(--gq-space-2) 0 0;
  font-size: var(--gq-text-sm);
}

.field-help {
  color: var(--gq-color-text-muted);
}

.field-error {
  color: var(--gq-color-danger-text);
  font-weight: 600;
}

.field-error[hidden] {
  display: none;
}

.time-readout {
  margin-block: var(--gq-space-8) var(--gq-space-4);
}

.time-label {
  color: var(--gq-color-text-muted);
}

.time-value {
  margin: 0;
  font-family: var(--gq-font-data);
  font-size: clamp(2rem, 17vw, 9rem);
  font-variant-numeric: tabular-nums;
  font-weight: 560;
  letter-spacing: -0.07em;
  line-height: 1.05;
}

.timer-status {
  min-height: 1.6em;
  margin: 0 0 var(--gq-space-4);
  color: var(--gq-color-text-muted);
}

.action-row {
  display: flex;
  gap: var(--gq-space-3);
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 8rem;
  min-height: 2.75rem;
  padding: var(--gq-space-2) var(--gq-space-4);
  border: var(--gq-border-thin) solid var(--gq-color-control-border);
  border-radius: var(--gq-radius-control);
  font-weight: 650;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease;
}

.primary-action {
  flex: 1 1 auto;
  color: var(--gq-color-ink);
  background: var(--gq-color-acid);
}

.secondary-action {
  flex: 0 1 12rem;
  color: var(--gq-color-ink);
  background: var(--gq-color-surface);
}

.primary-action:hover:not(:disabled),
.secondary-action:hover:not(:disabled) {
  background: var(--gq-color-paper-subtle);
}

.primary-action:active:not(:disabled),
.secondary-action:active:not(:disabled) {
  transform: translateY(1px);
}

.primary-action:disabled,
.secondary-action:disabled {
  color: var(--gq-color-text-muted);
  background: var(--gq-color-paper-subtle);
  cursor: not-allowed;
}

.action-row [hidden] {
  display: none;
}

.usage-note {
  max-width: 42rem;
  margin-top: var(--gq-space-8);
  padding-top: var(--gq-space-4);
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
}

.usage-note h2 {
  margin: 0 0 var(--gq-space-2);
  font-size: var(--gq-text-lg);
  line-height: 1.3;
}

.usage-note p {
  margin: 0;
  color: var(--gq-color-text-muted);
}

.usage-note p + p {
  margin-top: var(--gq-space-3);
}

:focus-visible {
  outline: 2px solid var(--gq-color-ink);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--gq-color-acid);
}

.reading {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gq-color-separator);
}
.reading h2 { margin: 0 0 1rem; font-size: var(--gq-text-lg); }
.reading h3 { margin: 1.5rem 0 .5rem; font-size: 1rem; }
.reading p { margin: 0; color: var(--gq-color-text-muted); }
.reading ol { padding-inline-start: 1.5rem; }
.reading li + li { margin-top: .5rem; }

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--gq-space-2) var(--gq-space-4);
  padding: var(--gq-space-4) max(1rem, calc((100% - 48rem) / 2));
  border-top: var(--gq-border-thin) solid var(--gq-color-separator);
  color: var(--gq-color-text-muted);
  font-size: var(--gq-text-sm);
}

.footer-home,
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--gq-space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (max-width: 32rem) {
  .topbar {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0 var(--gq-space-3);
    padding-block: var(--gq-space-2);
  }

  .locale-nav {
    margin-inline-start: auto;
  }

  .action-row {
    flex-direction: column;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
    flex-basis: auto;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}