.ds-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-width: 112px;
  height: var(--control-height-md);
  padding: 0 var(--space-4);
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font: 650 13px var(--font-ui);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    color var(--duration-hover-out) ease,
    border-color var(--duration-hover-out) ease,
    background var(--duration-hover-out) ease,
    transform var(--duration-hover-out) var(--ease-out);
}

.ds-button:hover:not(:disabled) {
  transform: translateY(-2px);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay-interactive);
}

.ds-button:active:not(:disabled) {
  transform: translateY(0) scale(0.985);
}

.ds-button:disabled,
.ds-button[aria-disabled="true"] {
  border-color: var(--line);
  color: var(--text-muted);
  background: transparent;
  cursor: not-allowed;
  transform: none;
  opacity: 0.52;
}

.ds-button--primary {
  color: var(--accent-ink);
  background: var(--accent);
}

.ds-button--primary:hover:not(:disabled) {
  color: var(--bg);
  background: var(--text);
}

.ds-button--secondary {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}

.ds-button--secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent-text);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.ds-button--quiet {
  color: var(--text-soft);
  background: transparent;
}

.ds-button--quiet:hover:not(:disabled) {
  color: var(--accent-text);
}

.ds-button--icon {
  width: var(--control-height-md);
  min-width: var(--control-height-md);
  padding: 0;
  border-color: var(--line);
}

.ds-button[data-state="loading"] {
  pointer-events: none;
  opacity: 0.78;
}

.ds-button[data-state="loading"]::after {
  width: 14px;
  height: 14px;
  border: 1px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  animation: ds-spin var(--duration-scene) linear infinite;
}

@keyframes ds-spin {
  to {
    transform: rotate(1turn);
  }
}

.ds-link {
  position: relative;
  display: inline-block;
  color: var(--text);
  font: 500 16px/1.6 var(--font-content);
  text-decoration: none;
}

.ds-link::after {
  position: absolute;
  right: 0;
  bottom: -2px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0.2);
  transform-origin: left;
  transition: transform var(--duration-hover-out) var(--ease-out);
}

.ds-link:hover::after,
.ds-link:focus-visible::after {
  transform: scaleX(1);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay-interactive);
}

.ds-route-link {
  --route-mark-size: 8px;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-3) 0 14px;
  color: var(--text);
  font: 600 14px var(--font-ui);
  text-decoration: none;
  transition:
    color var(--duration-hover-out) ease,
    transform var(--duration-hover-out) var(--ease-out);
}

.ds-route-link::before {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 1px;
  background: var(--line-strong);
  content: "";
}

.ds-route-link::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-hover-out) var(--ease-out);
}

.ds-route-link:hover,
.ds-route-link:focus-visible {
  color: var(--accent-text);
  transform: translateY(-1px);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay-interactive);
}

.ds-route-link:hover::after,
.ds-route-link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay-interactive);
}

.ds-route-link__mark {
  width: var(--route-mark-size);
  height: var(--route-mark-size);
  flex: 0 0 var(--route-mark-size);
  border: 1px solid currentColor;
  background: transparent;
  transition:
    background var(--duration-hover-out) ease,
    transform var(--duration-hover) var(--ease-settle);
}

.ds-route-link:hover .ds-route-link__mark,
.ds-route-link:focus-visible .ds-route-link__mark {
  background: currentColor;
  transform: rotate(90deg);
}

.ds-route-link--compact {
  --route-mark-size: 5px;
  gap: var(--space-2);
  padding: 4px 0 7px;
  color: var(--text-soft);
  font-size: 11px;
}

.ds-route-link--compact::after {
  bottom: 0;
}

.ds-route-link--compact::before {
  bottom: 0;
}

.nav-back {
  justify-self: center;
}

.ds-field {
  display: grid;
  gap: var(--space-2);
}

.ds-field:hover > label {
  color: var(--accent-text);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-field:hover .ds-hint {
  color: var(--text-soft);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-field > label {
  color: var(--text-soft);
  font: 600 11px var(--font-ui);
  transition: color var(--duration-hover-out) ease;
}

.ds-input,
.ds-textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  background: color-mix(in srgb, var(--surface) 42%, transparent);
  font: 400 16px/1.55 var(--font-content);
  outline: 0;
  transition:
    border-color var(--duration-hover-out) ease,
    background var(--duration-hover-out) ease,
    box-shadow var(--duration-hover-out) ease;
}

.ds-input {
  height: var(--control-height-md);
  padding: 0 var(--space-3);
}

.ds-textarea {
  min-height: 120px;
  padding: var(--space-3);
  resize: vertical;
}

.ds-input::placeholder,
.ds-textarea::placeholder {
  color: var(--text-muted);
}

.ds-input:hover:not(:focus),
.ds-textarea:hover:not(:focus),
.ds-field:hover .ds-input:not(:focus),
.ds-field:hover .ds-textarea:not(:focus) {
  border-color: color-mix(in srgb, var(--accent) 58%, var(--line-strong));
  background: color-mix(in srgb, var(--accent) 3%, var(--surface));
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-input:focus,
.ds-textarea:focus {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
  box-shadow: inset 3px 0 var(--accent);
}

.ds-field[data-state="error"] .ds-input,
.ds-field[data-state="error"] .ds-textarea {
  border-style: dashed;
  border-color: var(--text);
}

.ds-field[data-state="success"] .ds-input,
.ds-field[data-state="success"] .ds-textarea {
  border-color: var(--accent);
}

.ds-hint {
  min-height: 1.4em;
  color: var(--text-muted);
  font: 450 11px/1.4 var(--font-ui);
  transition: color var(--duration-hover-out) ease;
}

.ds-field:hover .ds-hint {
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-field[data-state="error"] .ds-hint,
.ds-field[data-state="success"] .ds-hint {
  color: var(--text);
}

.ds-check,
.ds-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-soft);
  font: 500 13px var(--font-ui);
  cursor: pointer;
}

.ds-check input,
.ds-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.ds-check-box {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  border: 1px solid var(--line-strong);
  background: transparent;
  transition:
    border-color var(--duration-hover-out) ease,
    background var(--duration-hover-out) ease;
}

.ds-check-box::after {
  position: absolute;
  top: 2px;
  left: 5px;
  width: 5px;
  height: 9px;
  border-right: 1.5px solid var(--accent-ink);
  border-bottom: 1.5px solid var(--accent-ink);
  content: "";
  opacity: 0;
  transform: rotate(42deg) scale(0.7);
  transition:
    opacity var(--duration-fast) ease,
    transform var(--duration-base) var(--ease-settle);
}

.ds-check input:checked + .ds-check-box {
  border-color: var(--accent);
  background: var(--accent);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay-interactive);
}

.ds-check input:checked + .ds-check-box::after {
  opacity: 1;
  transform: rotate(42deg) scale(1);
}

.ds-switch-track {
  position: relative;
  width: 40px;
  height: 22px;
  flex: 0 0 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: transparent;
  transition:
    border-color var(--duration-hover-out) ease,
    background var(--duration-hover-out) ease;
}

.ds-switch-track::after {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-muted);
  content: "";
  transition:
    background var(--duration-fast) ease,
    transform var(--duration-base) var(--ease-settle);
}

.ds-switch input:checked + .ds-switch-track {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay-interactive);
}

.ds-switch input:checked + .ds-switch-track::after {
  background: var(--accent);
  transform: translateX(18px);
}

.ds-check input:focus-visible + .ds-check-box,
.ds-switch input:focus-visible + .ds-switch-track {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

.ds-range {
  width: 100%;
  height: 28px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
  transition: opacity var(--duration-hover-out) ease;
}

.ds-range::-webkit-slider-runnable-track {
  height: 2px;
  background:
    linear-gradient(var(--accent), var(--accent)) 0 / var(--range-progress, 50%) 100% no-repeat,
    var(--line-strong);
}

.ds-range::-moz-range-track {
  height: 2px;
  background: var(--line-strong);
}

.ds-range::-moz-range-progress {
  height: 2px;
  background: var(--accent);
}

.ds-range::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  margin-top: -8px;
  appearance: none;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
  box-shadow: inset 0 0 0 4px var(--bg);
  transition:
    background var(--duration-hover) ease,
    transform var(--duration-hover) var(--ease-out);
}

.ds-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
  box-shadow: inset 0 0 0 4px var(--bg);
}

.ds-range:hover::-webkit-slider-thumb,
.ds-range:focus-visible::-webkit-slider-thumb {
  background: var(--accent);
  transform: scale(1.12);
}

.ds-range:hover::-moz-range-thumb,
.ds-range:focus-visible::-moz-range-thumb {
  background: var(--accent);
}

.ds-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  transition:
    border-color var(--duration-hover-out) ease,
    background var(--duration-hover-out) ease,
    transform var(--duration-hover-out) var(--ease-out);
}

.ds-media:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 4%, var(--bg-soft));
  transform: translateY(-2px);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-media img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform var(--duration-hover-out) var(--ease-out);
}

.pixel-avatar {
  image-rendering: pixelated;
}

.ds-media:hover img {
  transform: scale(1.025);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-media figcaption {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3);
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font: 500 10px/1.45 var(--font-ui);
  transition:
    border-color var(--duration-hover-out) ease,
    color var(--duration-hover-out) ease;
}

.ds-media:hover figcaption {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--line));
  color: var(--text-soft);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

.ds-code {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--line);
  color: var(--accent-text);
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  font: 500 0.88em/1.5 var(--font-mono);
}

[data-hover-surface] {
  transition:
    border-color var(--duration-hover-out) ease,
    background var(--duration-hover-out) ease,
    transform var(--duration-hover-out) var(--ease-out);
}

[data-hover-surface][data-cursor-active="true"] {
  border-color: color-mix(in srgb, var(--accent) 44%, var(--line-strong));
  background: color-mix(in srgb, var(--accent) 3%, transparent);
  transform: translateY(-1px);
  transition-duration: var(--duration-hover);
  transition-delay: var(--hover-delay);
}

body.debug-outlines *,
body.debug-outlines *::before,
body.debug-outlines *::after {
  outline: 1px dashed color-mix(in srgb, var(--accent) 26%, transparent) !important;
  outline-offset: -1px !important;
}

body.debug-outlines :is(
  a[href],
  button,
  input,
  textarea,
  select,
  label,
  summary,
  h1,
  h2,
  h3,
  h4,
  p,
  blockquote,
  img,
  figure,
  code,
  small,
  .spec-card,
  .spec-note,
  .space-row,
  .color-token,
  .health-check,
  .ds-field,
  [data-hover-surface]
) {
  outline: 1px dotted color-mix(in srgb, var(--accent) 88%, transparent) !important;
  outline-offset: var(--cursor-hit-slop, 5px) !important;
  box-shadow: 0 0 0 var(--cursor-hit-slop, 5px) rgb(var(--accent-rgb) / 10%) !important;
}

body.debug-grid::after {
  z-index: 800;
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, transparent 0 calc(8.333vw - 1px), rgb(var(--accent-rgb) / 15%) calc(8.333vw - 1px) 8.333vw),
    repeating-linear-gradient(0deg, transparent 0 79px, rgb(var(--accent-rgb) / 10%) 79px 80px);
  content: "";
  pointer-events: none;
}

body.debug-motion *,
body.debug-motion *::before,
body.debug-motion *::after {
  animation-duration: 2.5s !important;
  transition-duration: 0.8s !important;
}