/* ═══════════════════════════════════════════
   RSS Auto-Publisher Dashboard – Design System
   ═══════════════════════════════════════════ */

:root {
  /* Colors */
  --bg-primary: #080b14;
  --bg-surface: #0f1322;
  --bg-elevated: #161b2e;
  --bg-hover: #1e2540;
  --bg-active: #252d4a;
  --border: #1e2744;
  --border-light: #2a3558;

  --text-primary: #e2e8f4;
  --text-secondary: #7e89a8;
  --text-muted: #4f5a78;

  --accent: #7c5cf5;
  --accent-hover: #9278f8;
  --accent-muted: rgba(124, 92, 245, 0.15);
  --accent-glow: rgba(124, 92, 245, 0.3);

  --success: #22c06e;
  --success-muted: rgba(34, 192, 110, 0.12);
  --warning: #f0a030;
  --warning-muted: rgba(240, 160, 48, 0.12);
  --error: #e0434a;
  --error-muted: rgba(224, 67, 74, 0.12);
  --info: #3b8ff0;
  --info-muted: rgba(59, 143, 240, 0.12);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --sidebar-width: 240px;
  --header-height: 60px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  /* Transitions */
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════ SIDEBAR ═══════ */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-brand {
  height: var(--header-height);
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}

.sidebar-brand h1 {
  font-size: 15px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #b07cf8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.3px;
}

.sidebar-brand p {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.sidebar-nav {
  padding: 12px 10px;
  flex: 1;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.sidebar-nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar-nav-item.active {
  background: var(--accent-muted);
  color: var(--accent);
}

.sidebar-nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-status {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
}

.sidebar-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 8px;
}

.sidebar-status-dot.online { background: var(--success); box-shadow: 0 0 8px var(--success); }
.sidebar-status-dot.offline { background: var(--error); }

.sidebar-status-text {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ═══════ MAIN AREA ═══════ */
.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ═══════ HEADER ═══════ */
.header {
  height: var(--header-height);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 19, 34, 0.7);
  backdrop-filter: blur(16px);
  z-index: 50;
}

.header-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.2px;
}

.header-stats {
  display: flex;
  gap: 20px;
  align-items: center;
}

.header-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.header-stat-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.header-stat-value.success { color: var(--success); }
.header-stat-value.error { color: var(--error); }

/* ═══════ PAGE CONTENT ═══════ */
.page-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
}

/* ═══════ STAT CARDS ═══════ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.stat-card.purple::before { background: linear-gradient(90deg, var(--accent), #b07cf8); }
.stat-card.green::before { background: linear-gradient(90deg, #10b981, #34d399); }
.stat-card.amber::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.stat-card.red::before { background: linear-gradient(90deg, #ef4444, #f87171); }
.stat-card.blue::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }

.stat-card-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: 8px;
}

.stat-card-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
}

.stat-card-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ═══════ CARDS / PANELS ═══════ */
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-size: 14px;
  font-weight: 600;
}

.panel-body {
  padding: 16px 20px;
}

.panel-body.no-pad { padding: 0; }

/* ═══════ LIVE PIPELINE ═══════ */
.pipeline-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  animation: fadeSlideIn 300ms ease;
}

.pipeline-item:last-child { border-bottom: none; }

.pipeline-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  margin-top: 2px;
}

.pipeline-icon.processing {
  background: var(--accent-muted);
  color: var(--accent);
}

.pipeline-spinner {
  width: 16px;
  height: 16px;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

.pipeline-icon.success {
  background: var(--success-muted);
  color: var(--success);
}

.pipeline-icon.fail {
  background: var(--error-muted);
  color: var(--error);
}

.pipeline-info { flex: 1; min-width: 0; }

.pipeline-title {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pipeline-meta {
  display: flex;
  gap: 10px;
  margin-top: 4px;
  font-size: 11px;
  color: var(--text-muted);
}

.pipeline-stage {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pipeline-stage.scrape { background: var(--info-muted); color: var(--info); }
.pipeline-stage.rewrite { background: var(--accent-muted); color: var(--accent); }
.pipeline-stage.excerpt { background: var(--warning-muted); color: var(--warning); }
.pipeline-stage.publish { background: var(--success-muted); color: var(--success); }

/* ═══════ FEED STATUS GRID ═══════ */
.feed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.feed-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: var(--transition);
}

.feed-card:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.feed-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.feed-card-name {
  font-weight: 600;
  font-size: 14px;
}

.feed-card-detail {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ═══════ BADGES ═══════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
}

.badge.active { background: var(--success-muted); color: var(--success); }
.badge.disabled { background: var(--error-muted); color: var(--error); }
.badge.idle { background: rgba(127,127,127,0.12); color: var(--text-secondary); }
.badge.running {
  background: var(--accent-muted);
  color: var(--accent);
  animation: pulse 2s infinite;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ═══════ TABLE ═══════ */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tr:hover td {
  background: var(--bg-hover);
}

/* ═══════ BUTTONS ═══════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-danger {
  background: transparent;
  color: var(--error);
  border-color: var(--error);
}
.btn-danger:hover:not(:disabled) {
  background: var(--error-muted);
}

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon {
  padding: 6px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ═══════ FORMS ═══════ */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  transition: var(--transition);
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.form-textarea {
  font-family: var(--font-mono);
  font-size: 12px;
  resize: vertical;
  min-height: 200px;
  line-height: 1.7;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ═══════ TOGGLE SWITCH ═══════ */
.toggle {
  position: relative;
  width: 40px;
  height: 22px;
  display: inline-block;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-hover);
  border-radius: 99px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 2px;
  top: 2px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent);
  border-color: var(--accent);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(18px);
  background: white;
}

/* ═══════ LOG VIEWER ═══════ */
.log-viewer {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  padding: 16px;
  max-height: 600px;
  overflow-y: auto;
  overflow-x: auto;
  white-space: pre;
}

.log-line { padding: 1px 0; }
.log-line.info { color: var(--text-secondary); }
.log-line.warn { color: var(--warning); }
.log-line.error { color: var(--error); }
.log-line.success { color: var(--success); }

.log-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.log-toolbar .form-input,
.log-toolbar .form-select {
  width: auto;
  min-width: 140px;
}

/* ═══════ TOAST ═══════ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 13px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  animation: toastIn 300ms ease;
  backdrop-filter: blur(12px);
  max-width: 380px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--error); }
.toast.info { border-left: 3px solid var(--info); }
.toast.warning { border-left: 3px solid var(--warning); }

.toast-exit { animation: toastOut 250ms ease forwards; }

/* ═══════ MODAL ═══════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 520px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
  animation: modalIn 250ms ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }

.modal-body { padding: 24px; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* ═══════ EMPTY STATE ═══════ */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state p { font-size: 14px; margin-top: 8px; }

/* ═══════ SECTION HEADERS ═══════ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

/* ═══════ ANIMATIONS ═══════ */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ═══════ UTILITY ═══════ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hidden { display: none !important; }
.w-full { width: 100%; }
.font-mono { font-family: var(--font-mono); }

/* Two-column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}