.admin-app {
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 30px 22px 52px;
}

.admin-header .brand {
  color: inherit;
  text-decoration: none;
}

.login-panel {
  min-height: calc(100vh - 140px);
  display: grid;
  place-items: center;
}

.login-card,
.editor-card,
.question-panel {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.login-card {
  width: min(100%, 430px);
  display: grid;
  gap: 18px;
  padding: 34px;
}

.login-card h1,
.editor-card h1 {
  margin: 0;
  font-size: 28px;
}

.login-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.admin-shell {
  display: grid;
  grid-template-columns: minmax(360px, 440px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.question-panel {
  position: sticky;
  top: 18px;
  display: grid;
  gap: 16px;
  max-height: calc(100vh - 54px);
  padding: 18px;
  overflow: hidden;
}

.admin-toolbar,
.admin-filters,
.editor-actions,
.image-head {
  display: flex;
  gap: 12px;
}

.admin-toolbar {
  flex-wrap: wrap;
}

.admin-toolbar .primary-button,
.admin-toolbar .secondary-button,
.editor-actions .primary-button,
.editor-actions .secondary-button {
  min-height: 44px;
  padding: 0 18px;
}

.admin-filters {
  flex-wrap: wrap;
}

.admin-filters input {
  flex: 1 1 180px;
}

.admin-filters select {
  flex: 1 1 120px;
}

.admin-filters input,
.admin-filters select,
.login-card input,
.editor-card input,
.editor-card select,
.editor-card textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink);
  background: #fff;
  outline: none;
}

.admin-filters input,
.admin-filters select,
.login-card input,
.editor-card input,
.editor-card select {
  min-height: 44px;
  padding: 0 13px;
}

.editor-card textarea {
  min-height: 92px;
  padding: 12px 13px;
  resize: vertical;
}

.login-card label,
.editor-card label {
  display: grid;
  gap: 8px;
}

.login-card label span,
.editor-card label span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.duplicate-box {
  display: none;
  padding: 12px;
  border: 1px solid #f0d6a5;
  border-radius: 14px;
  color: #73501a;
  background: #fff8e8;
  font-size: 13px;
  line-height: 1.55;
}

.duplicate-box.show {
  display: block;
}

.question-list {
  display: grid;
  gap: 10px;
  overflow: auto;
  padding-right: 3px;
}

.question-row {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--ink);
  background: #fff;
  text-align: left;
}

.question-row:hover,
.question-row.active {
  border-color: #bdd3ff;
  background: var(--blue-soft);
}

.row-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.row-title {
  display: -webkit-box;
  overflow: hidden;
  font-weight: 900;
  line-height: 1.45;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.row-options {
  display: -webkit-box;
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.editor-panel {
  min-width: 0;
}

.editor-card {
  display: grid;
  gap: 18px;
  padding: 24px;
}

.editor-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.image-manager {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px dashed #cbd8e8;
  border-radius: 16px;
  background: var(--soft);
}

.image-head {
  align-items: center;
  justify-content: space-between;
}

.upload-button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
}

.image-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.image-item {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.image-item img {
  width: 100%;
  height: 110px;
  object-fit: contain;
  border-radius: 10px;
  background: #f3f6fa;
}

.image-item button {
  min-height: 34px;
  border: 0;
  border-radius: 10px;
  color: var(--red);
  background: #fff1f1;
}

.editor-actions {
  justify-content: flex-end;
  flex-wrap: wrap;
}

#deleteBtn {
  color: var(--red);
  border-color: #f0c6c6;
}

body.modal-open {
  overflow: hidden;
}

.list-pagination {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
}

.list-pagination span {
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.code-dialog {
  width: min(720px, calc(100vw - 32px));
  max-height: min(760px, calc(100vh - 32px));
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(7, 27, 58, 0.22);
}

.code-actions,
.generated-code,
.code-list {
  margin: 20px;
}

.code-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.code-actions strong,
.code-actions span,
.generated-code span {
  display: block;
}

.code-actions span,
.generated-code span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
}

.generated-code {
  padding: 16px;
  border: 1px solid #c9defd;
  border-radius: 8px;
  background: #f4f9ff;
}

.generated-code div {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.generated-code input {
  flex: 1;
  min-width: 0;
  font-weight: 800;
}

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

.code-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.code-row span {
  color: var(--muted);
  font-size: 13px;
}

.import-modal {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(21, 34, 49, 0.46);
}

.import-modal[hidden] {
  display: none;
}

.import-dialog {
  width: min(1120px, 100%);
  max-height: min(900px, calc(100vh - 48px));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 80px rgba(16, 37, 63, 0.2);
}

.import-header,
.import-footer,
.import-controls,
.import-question-head {
  display: flex;
  align-items: center;
}

.import-header {
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
}

.import-header h1 {
  margin: 3px 0 0;
  font-size: 23px;
}

.icon-close {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border: 0;
  color: var(--muted);
  background: transparent;
  font-size: 28px;
  line-height: 1;
}

.icon-close:hover {
  color: var(--ink);
  background: var(--soft);
}

.import-setup {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 170px 150px;
  align-items: end;
  gap: 14px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfe;
}

.file-drop {
  min-height: 78px;
  display: grid;
  place-content: center;
  gap: 5px;
  padding: 12px 18px;
  border: 1px dashed #aabbd0;
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  text-align: center;
  cursor: pointer;
}

.file-drop span {
  color: var(--muted);
  font-size: 12px;
}

.file-drop:hover,
.file-drop.dragging,
.file-drop.has-file {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.import-level {
  display: grid;
  gap: 8px;
}

.import-level span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.import-level select,
.import-controls select,
.import-question-meta select {
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
  outline: none;
}

.import-level select,
.import-controls select {
  min-height: 44px;
  padding: 0 12px;
  border-radius: 8px;
}

.import-loading {
  min-height: 280px;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  color: var(--muted);
}

.loading-ring {
  width: 34px;
  height: 34px;
  border: 3px solid #dbe5f0;
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: import-spin 0.8s linear infinite;
}

@keyframes import-spin {
  to { transform: rotate(360deg); }
}

.import-preview {
  min-height: 0;
  display: flex;
  flex: 1;
  flex-direction: column;
}

.import-preview[hidden],
.import-loading[hidden],
.import-setup[hidden] {
  display: none;
}

.import-summary {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-bottom: 1px solid var(--line);
}

.import-summary div {
  display: grid;
  gap: 2px;
  padding: 14px 18px;
  border-right: 1px solid var(--line);
}

.import-summary div:last-child {
  border-right: 0;
}

.import-summary strong {
  font-size: 22px;
}

.import-summary span {
  color: var(--muted);
  font-size: 12px;
}

.import-summary .summary-ready strong {
  color: var(--green);
}

.import-summary .summary-duplicate strong,
.import-summary .summary-invalid strong {
  color: #a56509;
}

.import-warning {
  padding: 10px 24px;
  border-bottom: 1px solid #f0d6a5;
  color: #73501a;
  background: #fff8e8;
  font-size: 13px;
  line-height: 1.5;
}

.import-controls {
  justify-content: space-between;
  gap: 14px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--line);
}

.check-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
}

.check-control input,
.import-question-head > input {
  width: 18px;
  height: 18px;
  accent-color: var(--blue);
}

.import-question-list {
  min-height: 220px;
  overflow: auto;
}

.import-question {
  padding: 15px 24px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.import-question.duplicate,
.import-question.invalid {
  background: #fffdf8;
}

.import-question-head {
  align-items: flex-start;
  gap: 12px;
}

.import-question-head > input {
  flex: 0 0 18px;
  margin-top: 3px;
}

.import-question-main {
  min-width: 0;
  display: grid;
  flex: 1;
  gap: 6px;
}

.import-question-main > strong {
  line-height: 1.5;
}

.import-question-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.import-question-meta select {
  min-height: 28px;
  padding: 0 8px;
  border-radius: 6px;
}

.import-status {
  padding: 3px 7px;
  border-radius: 4px;
  color: #176641;
  background: #e9f8f0;
  font-weight: 800;
}

.duplicate .import-status,
.invalid .import-status {
  color: #7a5215;
  background: #fff1cf;
}

.import-note {
  color: var(--muted);
  font-size: 12px;
}

.import-question details {
  margin: 10px 0 0 30px;
  color: var(--muted);
  font-size: 13px;
}

.import-question summary {
  width: fit-content;
  cursor: pointer;
}

.import-question pre,
.import-question details p {
  margin: 10px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font: inherit;
  line-height: 1.6;
}

.import-images {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.import-images img {
  width: 140px;
  height: 100px;
  object-fit: contain;
  border: 1px solid var(--line);
  background: var(--soft);
}

.import-empty {
  min-height: 220px;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.import-footer {
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 13px;
}

.import-footer > div {
  display: flex;
  gap: 10px;
}

.import-footer button {
  min-height: 42px;
  padding: 0 16px;
}

@media (max-width: 960px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .question-panel {
    position: static;
    max-height: none;
  }

  .question-list {
    max-height: 420px;
  }
}

@media (max-width: 620px) {
  .code-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .code-actions .primary-button {
    width: 100%;
  }

  .code-dialog {
    width: 100%;
    max-height: 100vh;
    border-radius: 0;
  }
  .admin-app {
    padding: 22px 12px 36px;
  }

  .admin-header {
    align-items: flex-start;
  }

  .field-grid,
  .editor-head {
    grid-template-columns: 1fr;
  }

  .editor-head {
    display: grid;
  }

  .admin-toolbar,
  .editor-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .login-card,
  .editor-card,
  .question-panel {
    border-radius: 20px;
  }

  .import-modal {
    padding: 0;
  }

  .import-dialog {
    width: 100%;
    height: 100dvh;
    max-height: none;
    border: 0;
    border-radius: 0;
  }

  .import-header,
  .import-setup,
  .import-controls,
  .import-question,
  .import-footer {
    padding-left: 14px;
    padding-right: 14px;
  }

  .import-setup {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .import-summary {
    grid-template-columns: repeat(3, 1fr);
  }

  .import-summary div {
    border-bottom: 1px solid var(--line);
  }

  .import-controls,
  .import-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .import-footer > div {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}