.collections-page {
  min-height: 100dvh;
  color: var(--color-ink);
  background: var(--color-canvas);
}

.collections-topbar {
  width: min(100% - 40px, 1400px);
  min-height: 72px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}

.collections-brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.collections-topbar nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 13px;
  white-space: nowrap;
}

.collections-topbar nav a {
  color: var(--color-muted);
  text-decoration: none;
}

.collections-topbar nav a[aria-current="page"],
.collections-topbar nav a:hover {
  color: var(--color-ink);
}

.collections-shell {
  width: min(100% - 40px, 1400px);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(220px, 270px) minmax(0, 1fr);
  gap: clamp(44px, 6vw, 92px);
  padding-block: 48px 88px;
}

.collections-aside {
  align-self: start;
  position: sticky;
  top: 28px;
  min-width: 285px;
}

.field-help,
.collection-prefix,
.collection-updated,
.resource-count {
  font-family: var(--font-code);
  font-size: 12px;
}

.collections-aside h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.collections-aside > p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.6;
}

.collections-aside .tools-nav a{
  padding: 6px;
  border-left: 3px solid transparent;
}

.collection-guide {
  display: grid;
  margin-top: 32px;
  border-block: 1px solid var(--color-border);
}

.collection-guide div {
  display: grid;
  gap: 5px;
  padding-block: 14px;
}

.collection-guide div + div {
  border-top: 1px solid var(--color-border);
}

.collection-guide strong {
  font-size: 13px;
}

.collection-guide span {
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.5;
}

.collections-workspace {
  min-width: 0;
}

.workspace-heading {
  min-height: 76px;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
}

.workspace-heading h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.035em;
}

.workspace-heading p,
.panel-heading p,
.collections-empty p {
  margin: 6px 0 0;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.55;
}

.collection-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--color-border);
}

.collection-grid.editor-open {
  grid-template-columns: minmax(360px, 0.85fr) minmax(430px, 1.15fr);
}

.collection-list-panel,
.collection-editor {
  min-width: 0;
  padding-top: 22px;
}

.collection-grid.editor-open .collection-list-panel {
  padding-right: 28px;
}

.collection-editor {
  padding-left: 28px;
  border-left: 1px solid var(--color-border);
}

.panel-heading {
  min-height: 44px;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.panel-heading h3 {
  margin: 0;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.editor-heading {
  min-height: 52px;
}

.editor-close {
  min-height: 36px;
  padding-inline: 11px;
}

.field {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 8px;
}

.field label {
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 650;
}

.field-label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.field-label-row span {
  color: var(--color-muted);
  font-family: var(--font-code);
  font-size: 10px;
}

.schema-form-toggle {
  min-height: 34px;
  padding-inline: 11px;
  font-size: 11px;
}

.resource-schema-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 16px 0 4px;
}

.resource-schema-form[hidden] { display: none; }

.schema-generated-field {
  min-width: 0;
}

.schema-generated-group {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  min-width: 0;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
}

.schema-generated-group legend {
  padding: 0 6px;
  color: var(--color-ink);
  font-weight: 700;
}

.schema-array-items,
.schema-array-item {
  grid-column: 1 / -1;
  display: grid;
  gap: 12px;
  min-width: 0;
}

.schema-array-item {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.schema-array-add,
.schema-array-remove {
  justify-self: start;
}

.schema-generated-field input,
.schema-generated-field select,
.schema-generated-field textarea {
  width: 100%;
  box-sizing: border-box;
  min-height: 42px;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  color: var(--color-ink);
  background: var(--color-canvas);
  font: 13px var(--font-ui);
}

.schema-generated-field input[type="checkbox"] {
  width: 18px;
  min-height: 18px;
  padding: 0;
  accent-color: var(--color-accent);
}

.schema-generated-field textarea {
  min-height: 110px;
  resize: vertical;
  font-family: var(--font-code);
}

.field-help {
  color: var(--color-muted);
  line-height: 1.5;
}

.schema-guide {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-surface);
}

.schema-guide summary {
  padding: 11px 13px;
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
}

.schema-guide summary:hover {
  background: color-mix(in srgb, var(--color-accent) 5%, var(--color-surface));
}

.schema-guide summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-accent) 22%, transparent);
  outline-offset: -3px;
}

.schema-guide__content {
  display: grid;
  gap: 16px;
  padding: 16px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.65;
}

.schema-guide__content p,
.schema-guide__content ul,
.schema-guide__content pre {
  margin: 0;
}

.schema-guide__topics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.schema-guide__content h3 {
  margin: 0 0 7px;
  color: var(--color-ink);
  font-size: 12px;
}

.schema-guide__content ul {
  padding-left: 18px;
}

.schema-guide__content li + li {
  margin-top: 4px;
}

.schema-guide__content code {
  font-family: var(--font-code);
  font-size: 0.95em;
}

.schema-guide__example pre {
  overflow-x: auto;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-canvas);
  color: var(--color-ink);
  line-height: 1.55;
  tab-size: 2;
}

.schema-guide__example {
  display: grid;
  gap: 9px;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-control);
  color: var(--color-ink);
  background: var(--color-canvas);
  font: inherit;
}

.field input {
  min-height: 44px;
  padding: 0 12px;
}

.field textarea {
  min-height: 220px;
  padding: 13px;
  resize: vertical;
  font-family: var(--font-code);
  font-size: 12px;
  line-height: 1.6;
  tab-size: 2;
}

.field--code + .field--code textarea {
  min-height: 130px;
}

.collection-editor .CodeMirror {
  min-height: 300px;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-control);
  color: var(--color-ink);
  background: var(--color-canvas);
  font-family: var(--font-code);
  font-size: 12px;
  line-height: 1.65;
}

.collection-editor .CodeMirror-focused {
  border-color: var(--color-accent);
  outline: 3px solid color-mix(in srgb, var(--color-accent) 22%, transparent);
  outline-offset: 1px;
}

.collection-editor .CodeMirror-gutters {
  border-right-color: var(--color-border);
  background: var(--color-surface);
}

.collection-editor .CodeMirror-lint-marker-error {
  filter: saturate(0.75);
}

.collection-editor .schema-error-line {
  background: color-mix(in srgb, var(--color-error) 12%, transparent);
}

.collection-schema-fallback {
  min-height: 300px;
}

.collection-prefix.is-default {
  font-style: italic;
}

.field input:focus-visible,
.field textarea:focus-visible {
  border-color: var(--color-accent);
  outline: 3px solid color-mix(in srgb, var(--color-accent) 22%, transparent);
  outline-offset: 1px;
}

.field input:disabled {
  color: var(--color-muted);
  background: var(--color-surface);
  cursor: not-allowed;
}

.editor-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 0.55fr);
  gap: 16px;
}

.collection-form,
#collection-form {
  display: grid;
  gap: 22px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font: inherit;
  font-size: 13px;
  font-weight: 680;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.button:active {
  transform: translateY(1px);
}

.button:focus-visible,
.collections-topbar a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-accent) 25%, transparent);
  outline-offset: 2px;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.button[aria-busy="true"] {
  cursor: wait;
}

.button--primary {
  color: #ffffff;
  background: var(--color-ink);
}

.button--primary:hover:not(:disabled) {
  background: #020817;
}

.button--secondary,
.button--quiet {
  border-color: var(--color-border);
  color: var(--color-ink);
  background: var(--color-canvas);
}

.button--secondary:hover:not(:disabled),
.button--quiet:hover:not(:disabled) {
  border-color: #94a3b8;
  background: var(--color-surface);
}

.button--danger {
  border-color: color-mix(in srgb, var(--color-error) 35%, var(--color-border));
  color: var(--color-error);
  background: var(--color-canvas);
}

.editor-actions,
.row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.inline-status,
.form-error {
  min-height: 20px;
  margin: 12px 0 0;
  font-size: 13px;
}

.form-error,
.workspace-error {
  color: var(--color-error);
}

.workspace-error {
  margin-bottom: 20px;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--color-error) 32%, var(--color-border));
  border-radius: var(--radius-control);
  background: color-mix(in srgb, var(--color-error) 5%, var(--color-canvas));
  font-size: 13px;
}

.collections-loading {
  display: grid;
  gap: 1px;
  background: var(--color-border);
}

.collections-loading span {
  min-height: 66px;
  background: var(--color-surface);
}

@media (prefers-reduced-motion: no-preference) {
  .collections-loading span {
    animation: collection-skeleton 1.35s ease-in-out infinite;
  }
}

@keyframes collection-skeleton {
  50% { opacity: 0.45; }
}

.collections-table-wrap {
  width: 100%;
}

.collections-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 13px;
}

.collections-table th {
  padding: 0 10px 10px 0;
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 600;
  text-align: left;
}

.collections-table th:nth-child(1) { width: 24%; }
.collections-table th:nth-child(2) { width: 17%; }
.collections-table th:nth-child(3) { width: 13%; }
.collections-table th:nth-child(4) { width: 22%; }
.collections-table th:nth-child(5) { width: 24%; }

.collections-table td {
  padding: 13px 10px 13px 0;
  border-bottom: 1px solid var(--color-border);
  vertical-align: bottom;
  overflow-wrap: anywhere;
}

.collections-table tr.is-selected td {
  background: var(--color-surface);
}

.collection-name {
  color: var(--color-ink);
  font-weight: 680;
}

.collection-name-wrap {
  display: grid;
  gap: 4px;
}

.collection-version {
  color: var(--color-muted);
  font-family: var(--font-code);
  font-size: 10px;
}

.collection-prefix,
.collection-updated,
.resource-count {
  color: var(--color-muted);
}

.row-actions {
  justify-content: end;
}

.row-actions .button {
  min-height: 36px;
  padding-inline: 10px;
  font-size: 12px;
}

.collections-empty {
  padding-block: 42px;
  text-align: center;
}

.collections-empty h4 {
  margin: 0;
  font-size: 15px;
}

.collections-empty p {
  max-width: 48ch;
  margin-inline: auto;
}

.collections-empty .button {
  margin-top: 18px;
}

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

[hidden] {
  display: none !important;
}

@media (max-width: 1180px) {
  .collection-grid.editor-open {
    grid-template-columns: 1fr;
  }

  .collection-grid.editor-open .collection-list-panel {
    padding-right: 0;
  }

  .collection-editor {
    margin-top: 32px;
    padding: 28px 0 0;
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }
}

@media (max-width: 767px) {
  .collections-topbar,
  .collections-shell {
    width: min(100% - 32px, 1400px);
  }

  .collections-topbar nav {
    gap: 14px;
    max-width: calc(100vw - 116px);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .collections-topbar nav::-webkit-scrollbar {
    display: none;
  }

  .collections-shell {
    grid-template-columns: 1fr;
    gap: 42px;
    padding-block: 38px 64px;
  }

  .collections-aside {
    position: static;
  }

  .workspace-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .workspace-heading .button,
  .editor-actions .button {
    width: 100%;
  }

  .editor-fields {
    grid-template-columns: 1fr;
  }

  .resource-schema-form {
    grid-template-columns: 1fr;
  }

  .schema-generated-group {
    grid-template-columns: 1fr;
  }

  .collections-table thead {
    display: none;
  }

  .collections-table,
  .collections-table tbody,
  .collections-table tr,
  .collections-table td {
    display: block;
    width: 100%;
  }

  .collections-table tr {
    padding-block: 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .collections-table td {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 12px;
    padding: 5px 0;
    border: 0;
  }

  .collections-table td::before {
    content: attr(data-label);
    color: var(--color-muted);
    font-size: 11px;
    font-weight: 600;
  }

  .actions-cell {
    margin-top: 8px;
  }

  .row-actions {
    justify-content: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .button {
    transition-duration: 0.01ms;
  }
}