:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --text: #17202a;
  --muted: #657080;
  --line: #d9dee6;
  --panel: #ffffff;
  --accent: #176b87;
  --accent-dark: #0f5067;
  --danger-bg: #fff0f0;
  --danger: #9c1c1c;
  --success-bg: #eef9f1;
  --success: #1e6f39;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 0 32px;
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.brand {
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.account nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.account nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.account nav a:hover {
  color: var(--accent);
}

.nav-separator {
  color: #b0b7c0;
}

.account {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.subtitle,
.muted,
.image-card p {
  color: var(--muted);
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 48px;
}

.panel,
.toolbar,
.detail-layout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.upload-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 28px;
  padding: 28px;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 18px;
}

h3 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0;
}

.upload-form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
  color: #364252;
  font-size: 14px;
  font-weight: 650;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 11px 12px;
  color: var(--text);
  font: inherit;
  background: #ffffff;
}

select {
  appearance: auto;
}

textarea {
  resize: vertical;
}

button {
  border: 0;
  border-radius: 6px;
  padding: 11px 16px;
  background: var(--accent);
  color: #ffffff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--text);
  text-decoration: none;
}

.secondary-button:hover {
  background: #edf1f4;
}

.compact-control {
  padding: 7px 11px;
}

.danger-button {
  background: #b42318;
}

.danger-button:hover {
  background: #8f1b13;
}

.compact-button {
  width: 100%;
  margin-top: 4px;
  padding: 9px 12px;
}

.delete-form {
  margin-top: 18px;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 18px 0;
  padding: 16px;
}

.search {
  display: flex;
  gap: 10px;
  flex: 1;
}

.search input {
  flex: 1;
}

.search select {
  width: min(240px, 32vw);
}

.category-form {
  display: grid;
  gap: 10px;
  width: min(380px, 100%);
}

.category-label {
  font-weight: 700;
  color: var(--accent) !important;
}

.category-page-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.category-page-header p {
  margin: 7px 0 0;
}

.text-link {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

.category-create-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 36px;
  align-items: center;
}

.category-create-copy p {
  margin: 7px 0 0;
}

.category-form {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

.category-management {
  margin-top: 18px;
}

.category-list-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.category-list-header p {
  margin: 5px 0 0;
}

.category-help {
  max-width: 420px;
  color: var(--muted);
  font-size: 14px;
  text-align: right;
}

.category-table {
  width: 100%;
}

.category-table-head,
.category-row {
  display: grid;
  grid-template-columns: minmax(240px, 520px) 90px 180px;
  gap: 18px;
  align-items: center;
}

.category-table-head {
  padding: 13px 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.category-table-head span:last-child {
  text-align: right;
}

.category-row {
  min-height: 64px;
  padding: 10px 12px;
  border-top: 1px solid #edf0f3;
}

.category-row:first-of-type {
  border-top: 0;
}

.category-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.category-name-cell strong {
  overflow-wrap: anywhere;
}

.system-label {
  padding: 3px 7px;
  border-radius: 4px;
  background: #edf1f4;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.protected-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.image-count {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.small-button {
  padding: 7px 10px;
  font-size: 13px;
}

.rename-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  min-width: 0;
}

.rename-form input {
  padding: 8px 10px;
}

.category-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.danger-text-button {
  border: 1px solid #e4b9b5;
  background: #ffffff;
  color: var(--danger);
}

.danger-text-button:hover {
  background: var(--danger-bg);
}

.view-category-link {
  min-width: 54px;
}

.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;
}

.category-update-form {
  display: grid;
  gap: 10px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.login-panel {
  width: min(440px, 100%);
  margin: 80px auto 0;
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.login-panel .muted {
  margin: 10px 0 24px;
}

.login-panel h1 {
  margin-bottom: 24px;
}

.login-form {
  display: grid;
  gap: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.image-card {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.image-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #e8ebef;
}

.card-body {
  display: grid;
  gap: 7px;
  padding: 14px;
}

.card-body h2 {
  overflow-wrap: anywhere;
}

.card-body p {
  margin: 0;
  font-size: 14px;
}

.tagline {
  color: #415364;
}

.messages {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.message {
  border-radius: 6px;
  padding: 12px 14px;
}

.message.error {
  background: var(--danger-bg);
  color: var(--danger);
}

.message.success {
  background: var(--success-bg);
  color: var(--success);
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 24px;
  padding: 20px;
}

.preview img {
  display: block;
  width: 100%;
  max-height: 680px;
  object-fit: contain;
  background: #edf0f3;
  border-radius: 6px;
}

.metadata dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
}

.metadata dt {
  color: var(--muted);
}

.metadata dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.panel {
  margin-top: 18px;
  padding: 20px;
}

table {
  width: 100%;
  margin-top: 12px;
  border-collapse: collapse;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.url-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
}

.url-cell code {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 13px;
}

.version-groups,
.snippet-grid {
  display: grid;
  gap: 18px;
  margin-top: 16px;
}

.version-group,
.snippet-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
}

.version-group table {
  margin-top: 10px;
  background: #ffffff;
}

.empty-inline {
  margin: 12px 0 0;
  padding: 14px;
  color: var(--muted);
  background: #ffffff;
  border: 1px dashed var(--line);
  border-radius: 6px;
}

.test-steps {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding-left: 22px;
  color: #364252;
}

.test-steps li {
  line-height: 1.5;
}

.test-validation-gallery {
  display: grid;
  gap: 22px;
  margin-top: 18px;
}

.test-validation-item {
  margin: 0;
}

.test-guide-image {
  display: block;
  width: 90%;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.test-validation-item figcaption {
  width: 90%;
  margin: 8px auto 0;
  color: #000000;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
}

.version-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.snippet-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.snippet-header p,
.panel > .muted {
  margin: 7px 0 0;
}

.snippet-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.code-block {
  margin: 0;
  overflow: auto;
  max-height: 280px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #111827;
  color: #e5edf7;
  font-size: 13px;
  line-height: 1.55;
}

.code-block code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.empty {
  grid-column: 1 / -1;
  padding: 32px;
  color: var(--muted);
  text-align: center;
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: 8px;
}

@media (max-width: 760px) {
  .topbar,
  .upload-panel,
  .detail-layout,
  .toolbar,
  .search,
  .category-create-panel {
    display: grid;
  }

  .topbar {
    gap: 4px;
    padding: 14px 18px;
  }

  .account {
    justify-content: space-between;
  }

  .account nav {
    gap: 10px;
  }

  .upload-panel,
  .detail-layout {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .metadata dl {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .search select {
    width: 100%;
  }

  .category-page-header {
    display: grid;
    gap: 10px;
  }

  .category-create-panel {
    grid-template-columns: 1fr;
    gap: 22px;
  }

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

  .category-list-header {
    display: grid;
    gap: 8px;
  }

  .category-help {
    text-align: left;
  }

  .category-table-head {
    display: none;
  }

  .category-row {
    grid-template-columns: 1fr auto;
    gap: 10px 14px;
    margin-top: 12px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 6px;
  }

  .rename-form,
  .category-name-cell {
    grid-column: 1 / -1;
  }

  .image-count::before {
    content: "Images: ";
    color: var(--muted);
    font-weight: 500;
  }

  .category-actions {
    justify-content: flex-end;
  }

  .login-panel {
    margin-top: 32px;
    padding: 22px;
  }

  .snippet-header,
  .snippet-actions,
  .url-cell {
    display: grid;
    justify-content: stretch;
  }

  .url-cell {
    min-width: 0;
  }

  .version-actions {
    display: grid;
    width: 100%;
  }

  .snippet-actions .secondary-button,
  .url-cell .secondary-button {
    width: 100%;
  }
}