/* validation.css — unified file-validation block.
   Mirrors the in-app component at:
     packages/shared/components/chat/latest/settings/SettingsDefinitionsField.vue
   Token contract: --md-sys-* / --xm-* only.
   Theme flips happen via primitives behind those tokens. */

/* ----- Block container (single border, single radius) ----- */

.ds-fvb {
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-button);
  background: var(--md-sys-color-inverse-surface);
  font-family: var(--md-sys-typescale-body-large-font);
  color: var(--md-sys-color-inverse-on-surface);
  width: 100%;
  height: 84px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  box-sizing: border-box;
  transition:
    border-color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
    background var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}

/* Two-region states (file + error, drop + error) grow to fit their
   content. Single-region states (idle, dragging, valid, standalone
   error) keep the fixed 84px. */
.ds-fvb--invalid,
.ds-fvb--error-no-file {
  height: auto;
  min-height: 84px;
  justify-content: flex-start;
}

.ds-fvb--invalid .ds-fvb__file,
.ds-fvb--error-no-file .ds-fvb__drop {
  flex: 0 0 auto;
}

.ds-fvb--invalid .ds-fvb__error,
.ds-fvb--error-no-file .ds-fvb__error {
  flex: 1 1 auto;
  align-content: start;
}

.ds-fvb--idle {
  border-style: dashed;
  border-color: var(--md-sys-color-outline);
  background: var(--md-sys-color-surface-container-high);
}

.ds-fvb--dragging {
  border-style: solid;
  border-color: var(--xm-color-primary-pressed);
  background: color-mix(
    in oklch,
    var(--md-sys-color-primary-container) 50%,
    var(--md-sys-color-surface-container-high)
  );
}

.ds-fvb--valid {
  border-color: var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-inverse-surface);
}

.ds-fvb--invalid,
.ds-fvb--error-no-file {
  border-color: var(--md-sys-color-outline);
  background: var(--md-sys-color-surface-container-high);
  color: var(--xm-color-inverse-on-surface-muted);
}

/* ----- Drop region ----- */

.ds-fvb__drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-0-5);
  padding: var(--s-2-5) var(--s-3);
  cursor: pointer;
}

.ds-fvb__drop:focus-visible {
  outline: 1px solid var(--xm-color-primary-pressed);
  outline-offset: 2px;
}

.ds-fvb__drop[data-dragging="1"] {
  background: color-mix(
    in oklch,
    var(--md-sys-color-primary-container) 35%,
    transparent
  );
}

.ds-fvb__drop-primary {
  font-size: 12px;
  font-weight: 500;
  color: inherit;
}

.ds-fvb__drop-secondary {
  font-size: 10.5px;
  color: var(--xm-color-inverse-on-surface-muted);
}

.ds-fvb--error-no-file .ds-fvb__drop-secondary {
  color: var(--xm-color-inverse-on-surface-muted);
}

/* ----- File region ----- */

.ds-fvb__file {
  display: flex;
  flex-direction: column;
  gap: var(--s-0-5);
  padding: var(--s-1-5) var(--s-2-5);
  min-width: 0;
}

.ds-fvb--invalid .ds-fvb__file {
  padding: var(--s-2) var(--s-3);
}

.ds-fvb__file-row {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  min-width: 0;
}

.ds-fvb__file-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  margin-left: auto;
  flex-shrink: 0;
}

.ds-fvb__file-name {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1-5);
  font-size: 12px;
  font-weight: 500;
  color: var(--md-sys-color-inverse-on-surface);
  min-width: 0;
  flex: 1 1 auto;
}

.ds-fvb--invalid .ds-fvb__file-name {
  color: var(--md-sys-color-inverse-on-surface);
}

.ds-fvb__file-name-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ds-fvb__file-sub {
  font-size: 10.5px;
  color: var(--xm-color-inverse-on-surface-muted);
  font-feature-settings: "tnum";
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.ds-fvb--invalid .ds-fvb__file-sub {
  color: var(--xm-color-inverse-on-surface-muted);
}

/* ----- Hairline divider between file/drop and error rows ----- */

.ds-fvb__divider {
  height: 1px;
  background: color-mix(in oklch, var(--xm-color-inverse-on-surface-muted) 22%, transparent);
  margin: 0;
}

/* ----- Error region ----- */

.ds-fvb__error {
  display: grid;
  grid-template-columns: 12px 1fr 14px;
  column-gap: var(--s-2);
  row-gap: var(--s-0-5);
  padding: var(--s-1-5) var(--s-2-5);
}

.ds-fvb--invalid .ds-fvb__error {
  padding: var(--s-2) var(--s-3);
}

.ds-fvb__error-icon {
  grid-column: 1;
  grid-row: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  margin-top: var(--s-0-5);
  color: var(--md-sys-color-inverse-on-surface);
}

.ds-fvb__error-title {
  grid-column: 2;
  grid-row: 1;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--md-sys-color-inverse-on-surface);
  min-width: 0;
  line-height: 1.35;
}

.ds-fvb__error-dismiss {
  grid-column: 3;
  grid-row: 1;
  appearance: none;
  border: none;
  background: transparent;
  color: var(--xm-color-inverse-on-surface-muted);
  width: 14px;
  height: 14px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  transition:
    background var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
    color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}

.ds-fvb__error-dismiss:hover {
  background: var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-inverse-on-surface);
}

.ds-fvb__error-message {
  grid-column: 2 / 4;
  grid-row: 2;
  margin: 0;
  font-size: 11px;
  line-height: 1.4;
  color: var(--xm-color-inverse-on-surface-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.ds-fvb__meta {
  grid-column: 2 / 4;
  grid-row: 3;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--s-1) var(--s-1-5);
  margin-top: 1px;
  min-width: 0;
}

.ds-fvb__filename {
  font-size: 10.5px;
  color: var(--md-sys-color-inverse-on-surface);
  font-weight: 500;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.ds-fvb__path {
  font-size: 10.5px;
  background: var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 1px 5px;
  border-radius: 3px;
  line-height: 1.4;
}

.ds-fvb__rule {
  font-size: 10px;
  background: var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 1px var(--s-1-5);
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  line-height: 1.4;
}

.ds-fvb__copy {
  appearance: none;
  margin-left: auto;
  border: none;
  background: transparent;
  color: var(--xm-color-inverse-on-surface-muted);
  font-size: 10px;
  font-weight: 500;
  padding: 1px 5px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--md-sys-typescale-body-large-font);
  line-height: 1.4;
  transition:
    background var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
    color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}

.ds-fvb__copy:hover {
  background: var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-inverse-on-surface);
}

.ds-fvb__copy:focus-visible {
  outline: 1px solid var(--md-sys-color-inverse-on-surface);
  outline-offset: 1px;
}

/* ----- Shared helpers (still used by the file row) ----- */

.ds-mono {
  font-family: var(--xm-typescale-mono-font);
}

.ds-valid-tick {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--md-sys-color-inverse-on-surface);
  color: var(--md-sys-color-inverse-surface);
  flex-shrink: 0;
}

.ds-invalid-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  color: var(--md-sys-color-inverse-on-surface);
  flex-shrink: 0;
}

/* ----- Extension badges ----- */

.ds-ext-badge {
  font-family: var(--xm-typescale-mono-font);
  font-size: 9px;
  font-weight: 700;
  padding: var(--s-0-5) 5px;
  border-radius: 3px;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.ds-ext-yml,
.ds-ext-yaml {
  background: var(--xm-ext-yml-bg);
  color: var(--xm-ext-yml-ink);
}

.ds-ext-json {
  background: var(--xm-ext-json-bg);
  color: var(--xm-ext-json-ink);
}