:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #6b7280;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --bg-primary: #ffffff;
  --bg-secondary: #f6f7f9;
  --bg-tertiary: #eef1f5;
  --bg-hover: #e3e8ef;
  --text-primary: #111827;
  --text-secondary: #667085;
  --text-tertiary: #98a2b3;
  --border-color: #d9dee8;
  --border-radius: 8px;
  --border-radius-sm: 5px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow: 0 8px 24px rgba(16, 24, 40, .08);
  --shadow-md: 0 12px 30px rgba(16, 24, 40, .12);
  --shadow-lg: 0 20px 48px rgba(16, 24, 40, .18);
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-secondary);
  line-height: 1.5;
}

button,
input,
textarea,
select {
  font: inherit;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.header {
  min-height: 58px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 10px clamp(14px, 3vw, 28px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-left,
.header-right,
.user-info,
.guest-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: 0;
}

.tagline,
.user-name {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.main {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(360px, 430px);
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
  min-height: 0;
}

.content,
.sidebar {
  min-width: 0;
}

.content {
  order: 1;
}

.sidebar {
  order: 2;
}

.panel {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  min-height: 58px;
  padding: 12px var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.panel-header h2 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.panel-actions,
.config-actions,
.config-editor-actions,
.ref-images-actions,
.viewer-footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.panel-body {
  padding: var(--spacing-md);
}

.control-scroll {
  max-height: calc(100vh - 116px);
  overflow-y: auto;
}

.section {
  margin-bottom: var(--spacing-md);
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.section-title h3 {
  margin: 0;
  font-size: var(--font-size-base);
}

.form-group {
  margin-bottom: 10px;
}

.channel-model-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.channel-model-row .form-group {
  min-width: 0;
}

.form-group label,
.setting-field {
  display: grid;
  gap: var(--spacing-xs);
  font-weight: 600;
}

.form-control,
.batch-custom {
  width: 100%;
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: border-color .2s, box-shadow .2s;
}

.form-control:focus,
.batch-custom:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

.form-control[readonly] {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: default;
}

textarea.form-control {
  resize: vertical;
  min-height: 118px;
}

.form-text {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.btn-link {
  background: none;
  border: 0;
  color: var(--primary-color);
  cursor: pointer;
  padding: 0;
  margin-left: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.btn {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 650;
  cursor: pointer;
  transition: background-color .18s, border-color .18s, transform .08s;
  text-decoration: none;
  gap: var(--spacing-xs);
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
}

.btn-sm {
  min-height: 30px;
  padding: 4px 9px;
  font-size: var(--font-size-sm);
}

.btn-block {
  width: 100%;
}

.submit-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
  margin-bottom: var(--spacing-xs);
}

.submit-actions .btn {
  min-width: 0;
  width: 100%;
  border-color: var(--primary-color);
}

#submitVpsBtn {
  border-radius: var(--border-radius) 0 0 var(--border-radius);
}

#submitDirectBtn {
  border-left: 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.ref-images-container {
  min-height: 104px;
  padding: 10px;
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius);
  transition: border-color .18s, background-color .18s;
}

.dropzone.dragging {
  border-color: var(--primary-color);
  background: #edf4ff;
}

.ref-images-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(74px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.ref-images-grid:empty {
  margin-bottom: 0;
}

.ref-images-grid[data-density="compact"] {
  grid-template-columns: repeat(auto-fill, minmax(62px, 1fr));
}

.ref-images-grid[data-density="tiny"] {
  grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
}

.ref-image-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  cursor: grab;
  touch-action: none;
}

.ref-image-item.ref-dragging {
  opacity: .72;
  cursor: grabbing;
}

.ref-image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ref-image-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: rgba(0, 0, 0, .62);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
}

.ref-order-badge {
  position: absolute;
  left: 4px;
  top: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 750;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-areas:
    "ratio ratio"
    "resolution batch"
    "quality background";
  gap: 8px;
}

.ratio-field {
  grid-area: ratio;
}

.resolution-field {
  grid-area: resolution;
}

.batch-field {
  grid-area: batch;
}

.quality-field {
  grid-area: quality;
}

.background-field {
  grid-area: background;
}

.setting-field[hidden] {
  display: none !important;
}

.option-slider {
  display: flex;
  gap: 4px;
  min-height: 30px;
  padding: 3px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-tertiary);
}

.option-slider.wrap {
  flex-wrap: wrap;
}

.option-slider button {
  min-height: 24px;
  flex: 1 1 auto;
  padding: 0 7px;
  border: 0;
  border-radius: var(--border-radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.option-slider button.active {
  background: var(--bg-primary);
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
  font-weight: 750;
}

.batch-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 58px;
  gap: 6px;
  align-items: center;
}

.task-panel,
.task-panel-body {
  min-height: 0;
}

.task-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-md);
  align-items: start;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.task-card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  background: var(--bg-primary);
  transition: box-shadow .18s, transform .18s;
}

.task-card:hover {
  box-shadow: var(--shadow-md);
}

.task-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  background: var(--bg-tertiary);
}

.task-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.task-thumb-label {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.task-thumb-specs {
  position: absolute;
  left: 6px;
  bottom: 6px;
  max-width: calc(100% - 12px);
  padding: 3px 6px;
  border-radius: 999px;
  background: rgba(17, 24, 39, .72);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spinner {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 3px solid #dbeafe;
  border-top-color: var(--primary-color);
  animation: spin .8s linear infinite;
}

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

.task-card-meta {
  padding: var(--spacing-md);
  display: grid;
  gap: 6px;
}

.task-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.task-status {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.task-status.pending,
.task-status.queued {
  background: #fef3c7;
  color: #92400e;
}

.task-status.processing {
  background: #dbeafe;
  color: #1e40af;
}

.task-status.completed,
.task-status.done {
  background: #d1fae5;
  color: #065f46;
}

.task-status.failed,
.task-status.error {
  background: #fee2e2;
  color: #991b1b;
}

.task-status.cancelled {
  background: #e5e7eb;
  color: #4b5563;
}

.task-time {
  color: var(--text-tertiary);
  font-size: 12px;
  white-space: nowrap;
}

.task-name {
  font-weight: 750;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.task-stage,
.task-meta-line {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.task-progress {
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 999px;
  overflow: hidden;
}

.task-progress span {
  display: block;
  height: 100%;
  background: var(--primary-color);
  transition: width .2s ease;
}

.task-error {
  color: var(--error-color);
  font-size: var(--font-size-sm);
  overflow-wrap: anywhere;
}

.task-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.task-actions .btn {
  flex: 1 1 auto;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: rgba(15, 23, 42, .55);
}

.modal.active {
  display: flex;
}

.modal-dialog {
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-large .modal-dialog,
.modal-dialog.modal-large {
  max-width: 900px;
}

.viewer-dialog {
  max-width: 1100px;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header,
.modal-footer {
  padding: var(--spacing-lg);
  border-color: var(--border-color);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.modal-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: var(--border-radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 22px;
}

.modal-close:hover {
  background: var(--bg-tertiary);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  justify-content: flex-end;
  text-align: right;
}

.modal-footer a {
  color: var(--primary-color);
  text-decoration: none;
}

.modal-footer a:hover {
  text-decoration: underline;
}

.viewer-body {
  min-height: 300px;
}

.viewer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: var(--spacing-md);
  align-items: stretch;
}

.viewer-media-panel {
  min-width: 0;
}

.viewer-prompt {
  border-left: 1px solid var(--border-color);
  padding-left: var(--spacing-md);
  display: grid;
  grid-template-rows: auto 1fr;
  gap: var(--spacing-sm);
  min-height: 260px;
}

.viewer-prompt h4 {
  margin: 0;
  font-size: var(--font-size-base);
}

.viewer-prompt-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  white-space: pre-wrap;
  overflow: auto;
  max-height: 62vh;
}

.image-annotator {
  display: grid;
  gap: var(--spacing-sm);
}

.annotator-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.annotator-toolbar button {
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
}

.annotator-toolbar button.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

.annotator-stage {
  min-height: 320px;
  max-height: 68vh;
  display: grid;
  place-items: center;
  overflow: auto;
  background: #111827;
  border-radius: var(--border-radius);
}

.annotator-media {
  position: relative;
  display: inline-grid;
  max-width: 100%;
  max-height: 68vh;
}

.annotator-media img {
  display: block;
  max-width: 100%;
  max-height: 68vh;
  object-fit: contain;
  user-select: none;
}

.annotator-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: zoom-in;
}

.image-annotator[data-mode="draw"] .annotator-canvas {
  cursor: crosshair;
}

.full-image-view {
  position: fixed;
  inset: 0;
  z-index: 2200;
  background: rgba(0, 0, 0, .82);
}

.full-image-viewport {
  position: absolute;
  inset: 0;
  overflow: hidden;
  cursor: grab;
}

.full-image-viewport.dragging {
  cursor: grabbing;
}

.full-image-viewport img {
  position: absolute;
  max-width: none;
  max-height: none;
  transform-origin: 0 0;
  user-select: none;
}

.full-view-menu {
  position: fixed;
  display: none;
  z-index: 2210;
}

.full-view-menu.open {
  display: block;
}

.divider {
  text-align: center;
  margin: var(--spacing-md) 0;
  color: var(--text-tertiary);
}

.oauth-buttons,
.config-list,
.model-editor-list,
.config-editor {
  display: grid;
  gap: var(--spacing-md);
}

.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.toast {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 2000;
  max-width: min(420px, calc(100vw - 32px));
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  background: var(--primary-color);
  color: #fff;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(-16px);
  transition: opacity .22s, transform .22s;
  pointer-events: none;
}

.toast.active {
  opacity: 1;
  transform: translateY(0);
}

.config-notice {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.config-notice p {
  margin: 0 0 4px;
}

.config-notice p:last-child {
  margin-bottom: 0;
}

.config-item,
.model-editor {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  background: var(--bg-primary);
}

.model-editor {
  background: var(--bg-secondary);
}

.config-item-header,
.config-editor-header,
.model-editor-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.config-editor-header.compact {
  margin-bottom: var(--spacing-md);
}

.config-item-name {
  font-weight: 750;
}

.config-item-url,
.config-item-models {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.badge {
  display: inline-flex;
  align-items: center;
  margin-left: var(--spacing-xs);
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 650;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.config-editor-section {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
}

.endpoint-field {
  display: grid;
  gap: 6px;
}

.endpoint-select,
.endpoint-custom {
  min-height: 36px;
}

.endpoint-custom {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
}

.endpoint-custom.is-custom {
  background: var(--bg-primary);
  color: var(--text-primary);
}

@media (max-width: 1024px) {
  .main {
    grid-template-columns: 1fr;
  }

  .content,
  .sidebar {
    order: initial;
  }

  .control-scroll {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .channel-model-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

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

  .header-left,
  .header-right {
    justify-content: space-between;
  }

  .main {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }

  .panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .task-list {
    grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  }

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

  .modal {
    padding: var(--spacing-sm);
  }

  .modal-dialog {
    max-width: 100%;
  }

  .viewer-layout {
    grid-template-columns: 1fr;
  }

  .viewer-prompt {
    min-height: 160px;
    border-left: 0;
    border-top: 1px solid var(--border-color);
    padding-left: 0;
    padding-top: var(--spacing-md);
  }

  .viewer-footer .btn {
    flex: 1 1 auto;
  }

  .annotator-stage {
    min-height: 240px;
  }
}