:root {
  --color-bg: #0d1117;
  --color-bg-elevated: #161b22;
  --color-border: #30363d;
  --color-text: #e6edf3;
  --color-text-muted: #8b949e;
  --color-primary: #58a6ff;
  --color-primary-hover: #79b8ff;
  --color-success: #3fb950;
  --color-warning: #d29922;
  --color-danger: #f85149;
  --color-info: #58a6ff;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --radius: 6px;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  --transition: 150ms ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
}

.tabs {
  display: flex;
  gap: 4px;
}

.tab {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
}

.tab:hover {
  color: var(--color-text);
  background: var(--color-border);
}

.tab.active {
  color: var(--color-primary);
  background: rgba(88, 166, 255, 0.1);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.status-indicator .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-warning);
}

.status-indicator.connected .dot {
  background: var(--color-success);
}
.status-indicator.error .dot {
  background: var(--color-danger);
}

/* Main */
.main {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

.tab-panel {
  display: none;
  animation: fadeIn 150ms ease;
}
.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-card h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}
.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
}

/* Quick Actions */
.quick-actions {
  margin-bottom: 24px;
}
.quick-actions h2 {
  font-size: 1rem;
  margin-bottom: 12px;
}
.action-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-secondary {
  background: var(--color-border);
  color: var(--color-text);
}
.btn-secondary:hover:not(:disabled) {
  background: #3d444d;
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}
.btn-danger:hover:not(:disabled) {
  background: #ff6b6b;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8125rem;
}
.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

/* Cards */
.form-card,
.results-card,
.progress-card,
.settings-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.panel-header {
  margin-bottom: 16px;
}
.panel-header h2 {
  font-size: 1.125rem;
}

/* Forms */
.form-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.form-group {
  flex: 1;
  min-width: 180px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.form-group input::placeholder {
  color: var(--color-text-muted);
}

.checkbox-group {
  align-items: flex-start;
}
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text);
  text-transform: none;
  letter-spacing: normal;
}
.checkbox-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
th,
td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
th {
  background: var(--color-bg);
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
tr:last-child td {
  border-bottom: none;
}
tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: capitalize;
}

.status-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-pending {
  background: rgba(210, 153, 34, 0.15);
  color: var(--color-warning);
}
.status-pending::before {
  background: var(--color-warning);
}

.status-researching,
.status-generating,
.status-humanizing,
.status-thumbnail,
.status-publishing {
  background: rgba(88, 166, 255, 0.15);
  color: var(--color-info);
}
.status-researching::before,
.status-generating::before,
.status-humanizing::before,
.status-thumbnail::before,
.status-publishing::before {
  background: var(--color-info);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.status-published {
  background: rgba(63, 185, 80, 0.15);
  color: var(--color-success);
}
.status-published::before {
  background: var(--color-success);
}

.status-failed {
  background: rgba(248, 81, 73, 0.15);
  color: var(--color-danger);
}
.status-failed::before {
  background: var(--color-danger);
}

/* Action buttons in tables */
.action-btn {
  padding: 6px 10px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.8125rem;
  transition: var(--transition);
}
.action-btn:hover {
  background: var(--color-border);
  color: var(--color-text);
}
.action-btn.primary {
  color: var(--color-primary);
}
.action-btn.danger {
  color: var(--color-danger);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.pagination button {
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border-radius: var(--radius);
  cursor: pointer;
}
.pagination button.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
}
.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Progress */
.progress-steps {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.progress-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.progress-step.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(88, 166, 255, 0.1);
}
.progress-step.completed {
  border-color: var(--color-success);
  color: var(--color-success);
}
.progress-step.completed::before {
  content: "✓";
}
.progress-step.failed {
  border-color: var(--color-danger);
  color: var(--color-danger);
}
.progress-step.failed::before {
  content: "✗";
}

.progress-log {
  max-height: 200px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.log-entry {
  padding: 4px 8px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: 8px;
}
.log-time {
  color: var(--color-text-muted);
  white-space: nowrap;
}
.log-message {
  color: var(--color-text);
}
.log-message.error {
  color: var(--color-danger);
}
.log-message.success {
  color: var(--color-success);
}
.log-message.warning {
  color: var(--color-warning);
}

/* Settings */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.settings-card dl {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
}
.settings-card dt {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}
.settings-card dd {
  color: var(--color-text);
  font-size: 0.875rem;
}
#configDisplay {
  background: var(--color-bg);
  padding: 16px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}
.modal.hidden {
  display: none;
}
.modal-content {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 700px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}
.modal-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}
.modal-close:hover {
  color: var(--color-text);
}
.modal-body {
  padding: 20px;
  overflow-y: auto;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  max-width: 400px;
  box-shadow: var(--shadow);
  animation: slideIn 200ms ease;
}
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.toast.success {
  border-left: 3px solid var(--color-success);
}
.toast.error {
  border-left: 3px solid var(--color-danger);
}
.toast.warning {
  border-left: 3px solid var(--color-warning);
}
.toast.info {
  border-left: 3px solid var(--color-info);
}
.toast-message {
  flex: 1;
  font-size: 0.875rem;
}
.toast-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
}

/* Filters */
.filters {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.filters select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  border-radius: var(--radius);
  font-size: 0.875rem;
}

/* Hidden utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  .tabs {
    width: 100%;
    overflow-x: auto;
  }
  .main {
    padding: 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .form-row {
    flex-direction: column;
  }
  .settings-grid {
    grid-template-columns: 1fr;
  }
  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }
  .toast {
    min-width: auto;
  }
}