:root {
  --bg: #f8fafc;
  --bg-elevated: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-hover: #e2e8f0;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border: #cbd5e1;
  --border-subtle: #e2e8f0;

  --primary: #0f766e;
  --primary-hover: #115e59;
  --primary-soft: #ccfbf1;
  --primary-text: #134e4a;

  --success: #15803d;
  --success-soft: #dcfce7;
  --success-border: #86efac;

  --warning: #b45309;
  --warning-soft: #fef3c7;
  --warning-border: #fcd34d;

  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --danger-border: #fca5a5;

  --info: #1d4ed8;
  --info-soft: #dbeafe;
  --info-border: #93c5fd;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --bg-elevated: #1e293b;
    --bg-subtle: #0f172a;
    --bg-hover: #334155;
    --text: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border: #334155;
    --border-subtle: #1e293b;

    --primary: #14b8a6;
    --primary-hover: #2dd4bf;
    --primary-soft: #134e4a;
    --primary-text: #ccfbf1;

    --success: #4ade80;
    --success-soft: #064e3b;
    --success-border: #059669;

    --warning: #fbbf24;
    --warning-soft: #451a03;
    --warning-border: #d97706;

    --danger: #f87171;
    --danger-soft: #450a0a;
    --danger-border: #dc2626;

    --info: #60a5fa;
    --info-soft: #1e3a8a;
    --info-border: #2563eb;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45);
  }
}

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a:hover {
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  z-index: 1000;
}
.skip-link:focus {
  top: 8px;
}

/* Header & Navigation */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
}
.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-title {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.92rem;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
.nav-link:hover {
  background: var(--bg-subtle);
  color: var(--text);
  text-decoration: none;
}
.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary-text);
}
.nav-link-cta {
  background: var(--primary);
  color: #ffffff !important;
}
.nav-link-cta:hover {
  background: var(--primary-hover);
}

.header-user {
  display: flex;
  align-items: center;
  gap: 8px;
}
.user-pill {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  padding: 4px 10px;
  border-radius: 999px;
  max-width: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Main container */
.app-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 12px 92px;
  min-height: calc(100vh - 60px);
}

/* Bottom navigation on mobile */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  padding-bottom: env(safe-area-inset-bottom, 0);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.06);
}

.bottom-nav-item {
  flex: 1;
  min-height: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  text-decoration: none;
  padding: 6px 2px;
}
.bottom-nav-item:hover {
  text-decoration: none;
  color: var(--text);
}
.bottom-nav-item.active {
  color: var(--primary);
}
.bottom-nav-add .nav-icon {
  background: var(--primary);
  color: #ffffff;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}
.nav-icon {
  font-size: 1.15rem;
  line-height: 1;
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
  }
  .bottom-nav {
    display: none !important;
  }
  .app-main {
    padding: 24px 20px 48px;
  }
  .user-pill {
    max-width: 220px;
  }
}

/* Typography & Layout Utilities */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.page-title {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.page-subtitle {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.section-title {
  font-size: 1.08rem;
  font-weight: 700;
  margin: 20px 0 10px;
}

/* Cards & Grids */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
}
.card-highlight {
  border: 2px solid var(--primary);
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 680px) {
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1040px) {
  .cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.stat-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.stat-label {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 700;
}
.stat-value {
  font-size: 1.32rem;
  font-weight: 800;
  margin-top: 4px;
  word-break: break-word;
}
.stat-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Buttons & Inputs (min 44px height for mobile one-handed ergonomics) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover:not(:disabled) {
  background: var(--bg-subtle);
  text-decoration: none;
}
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  color: #ffffff;
}
.btn-danger {
  background: var(--danger-soft);
  border-color: var(--danger-border);
  color: var(--danger);
}
.btn-danger:hover:not(:disabled) {
  background: var(--danger);
  color: #ffffff;
}
.btn-ghost {
  border-color: transparent;
  background: transparent;
}
.btn-sm {
  min-height: 36px;
  padding: 5px 10px;
  font-size: 0.82rem;
}
.btn-block {
  width: 100%;
}

/* Filter Pills & Tabs */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
  align-items: center;
}
.pill-btn {
  min-height: 40px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.86rem;
  cursor: pointer;
}
.pill-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.tabs-bar {
  display: flex;
  gap: 6px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 16px;
  overflow-x: auto;
}
.tab-btn {
  min-height: 44px;
  padding: 8px 16px;
  border: none;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  margin-bottom: -2px;
  white-space: nowrap;
}
.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Badges & Chips */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.2;
}
.badge-target-hit {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid var(--success-border);
}
.badge-special {
  background: var(--warning-soft);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}
.badge-kind {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  text-transform: capitalize;
}
.badge-project {
  background: var(--info-soft);
  color: var(--info);
  border: 1px solid var(--info-border);
}
.badge-status-works, .badge-status-active, .badge-status-done {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid var(--success-border);
}
.badge-status-blocked, .badge-status-failed {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}
.badge-status-needs_key, .badge-status-paused, .badge-status-pending, .badge-status-running, .badge-status-baseline_pending {
  background: var(--warning-soft);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}
.badge-status-disabled, .badge-status-archived {
  background: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* Hint Chips */
.hint-chip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  margin-top: 8px;
}
.hint-chip-buy {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid var(--success-border);
}
.hint-chip-wait {
  background: var(--warning-soft);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}
.hint-chip-neutral {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.hint-action-label {
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.73rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.08);
  flex-shrink: 0;
}

/* Confidence Button Badge */
.conf-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  min-height: 30px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--border);
  font-family: inherit;
}
.conf-high {
  background: var(--success-soft);
  color: var(--success);
  border-color: var(--success-border);
}
.conf-medium {
  background: var(--info-soft);
  color: var(--info);
  border-color: var(--info-border);
}
.conf-low {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: var(--warning-border);
}

/* Watchlist Item Card */
.item-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
}
.item-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}
.item-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  line-height: 1.3;
}
.item-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 4px;
}
.item-price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
}
.item-best-price {
  font-size: 1.38rem;
  font-weight: 800;
  color: var(--text);
}
.item-best-retailer {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-left: 6px;
}
.item-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  font-size: 0.8rem;
}
.metric-box {
  background: var(--bg);
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}
.metric-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
}
.metric-val {
  font-weight: 700;
  color: var(--text);
}
.item-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 8px;
}

/* Forms */
.form-group {
  margin-bottom: 14px;
}
.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 5px;
  color: var(--text);
}
.form-help {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 3px;
}
.form-control {
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.form-control:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 640px) {
  .form-row-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .form-row-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.kv-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}
@media (max-width: 440px) {
  .kv-row {
    grid-template-columns: 1fr;
    padding: 8px;
    background: var(--bg-subtle);
    border-radius: var(--radius-sm);
  }
}

/* Offer selection list in Add Item */
.offer-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  margin-bottom: 8px;
  cursor: pointer;
}
.offer-row:hover {
  border-color: var(--primary);
}
.offer-checkbox {
  width: 22px;
  height: 22px;
  margin-top: 2px;
  accent-color: var(--primary);
  flex-shrink: 0;
}
.offer-body {
  flex: 1;
  min-width: 0;
}
.offer-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
  word-break: break-word;
}
.offer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.offer-price-col {
  text-align: right;
  flex-shrink: 0;
}
.offer-price {
  font-size: 1.15rem;
  font-weight: 800;
}
.was-price {
  text-decoration: line-through;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Chart container */
.chart-wrapper {
  position: relative;
  width: 100%;
  height: 280px;
  margin-top: 8px;
}
@media (min-width: 768px) {
  .chart-wrapper {
    height: 340px;
  }
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table th,
.data-table td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}
.data-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 700;
  background: var(--bg-subtle);
}

/* Auth container */
.auth-card {
  max-width: 420px;
  margin: 36px auto;
  padding: 24px 20px;
}

/* Modal & Toast */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 20px;
  box-shadow: var(--shadow-md);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.modal-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
}

.toast-container {
  position: fixed;
  top: 14px;
  right: 14px;
  left: 14px;
  z-index: 600;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
@media (min-width: 540px) {
  .toast-container {
    left: auto;
    width: 380px;
  }
}
.toast {
  pointer-events: auto;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text);
  border-left: 5px solid var(--primary);
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
}
.toast-error {
  border-left-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}
.toast-success {
  border-left-color: var(--success);
}

/* Loading & Empty States */
.loading-state, .empty-state {
  text-align: center;
  padding: 36px 16px;
  color: var(--text-secondary);
}
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 12px;
  animation: spin 0.9s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .spinner {
    animation: none;
    border-color: var(--primary);
  }
}