/* ==========================================================================
   Premium Value Tracker - Design System
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Theme Variables
   -------------------------------------------------------------------------- */
:root {
  color-scheme: dark;
  /* Dark Theme (Default) */
  --bg-primary: #0a0a1a;
  --bg-secondary: #12122a;
  --bg-tertiary: #1a1a3e;
  --bg-card: rgba(255,255,255,0.05);
  --bg-card-hover: rgba(255,255,255,0.08);
  --bg-input: rgba(255,255,255,0.06);
  --bg-input-solid: #191929;
  --border-color: rgba(255,255,255,0.1);
  --border-hover: rgba(255,255,255,0.2);
  
  --text-primary: #ffffff;
  --text-secondary: rgba(255,255,255,0.7);
  --text-muted: rgba(255,255,255,0.4);
  
  --accent-1: #00d2ff;
  --accent-2: #00ff88;
  --accent-gradient: linear-gradient(135deg, #00d2ff, #00ff88);
  
  --danger: #ff4757;
  --warning: #ffb347;
  --success: #2ed573;
  
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.4);
  
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.1);
  --glass-blur: 16px;
  
  --sidebar-bg: linear-gradient(180deg, #12122a 0%, #1a1a3e 100%);
  --topbar-bg: rgba(10,10,26,0.8);

  /* Sizing Variables */
  --sidebar-width: 260px;
  --sidebar-collapsed: 0px;
  --topbar-height: 64px;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

[data-theme="light"] {
  color-scheme: light;
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8eaed;
  --bg-card: rgba(255,255,255,0.85);
  --bg-card-hover: rgba(255,255,255,0.95);
  --bg-input: rgba(0,0,0,0.04);
  --bg-input-solid: #e6e8eb;
  --border-color: rgba(0,0,0,0.1);
  --border-hover: rgba(0,0,0,0.2);
  
  --text-primary: #1a1a2e;
  --text-secondary: rgba(0,0,0,0.6);
  --text-muted: rgba(0,0,0,0.35);
  
  --accent-1: #0066ff;
  --accent-2: #00cc88;
  --accent-gradient: linear-gradient(135deg, #0066ff, #00cc88);
  
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(0,0,0,0.08);
  --glass-blur: 20px;
  
  --sidebar-bg: linear-gradient(180deg, #ffffff 0%, #f0f2f5 100%);
  --topbar-bg: rgba(255,255,255,0.85);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8eaed;
    --bg-card: rgba(255,255,255,0.85);
    --bg-card-hover: rgba(255,255,255,0.95);
    --bg-input: rgba(0,0,0,0.04);
    --bg-input-solid: #e6e8eb;
    --border-color: rgba(0,0,0,0.1);
    --border-hover: rgba(0,0,0,0.2);
    --text-primary: #1a1a2e;
    --text-secondary: rgba(0,0,0,0.6);
    --text-muted: rgba(0,0,0,0.35);
    --accent-1: #0066ff;
    --accent-2: #00cc88;
    --accent-gradient: linear-gradient(135deg, #0066ff, #00cc88);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
    --glass-bg: rgba(255,255,255,0.7);
    --glass-border: rgba(0,0,0,0.08);
    --glass-blur: 20px;
    --sidebar-bg: linear-gradient(180deg, #ffffff 0%, #f0f2f5 100%);
    --topbar-bg: rgba(255,255,255,0.85);
  }
}

/* --------------------------------------------------------------------------
   2. Reset & Typography
   -------------------------------------------------------------------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans Thai', 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --------------------------------------------------------------------------
   3. Layout
   -------------------------------------------------------------------------- */
.app-layout {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  position: relative;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 40;
  transition: transform var(--transition-normal);
}

.sidebar-header {
  height: var(--topbar-height);
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-close {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 30;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

.top-bar {
  height: var(--topbar-height);
  background: var(--topbar-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 20;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
}

.content-area {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.view {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.view.active {
  display: block;
}

/* --------------------------------------------------------------------------
   4. Components
   -------------------------------------------------------------------------- */

/* Navigation */
.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
  margin: 0 var(--spacing-sm);
  border-radius: var(--radius-sm);
}

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

.nav-item.active {
  background: var(--bg-card);
  color: var(--accent-1);
  border-left: 4px solid var(--accent-1);
}

.nav-icon {
  font-size: 20px;
}

/* Cards & Glass */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  border-left: 4px solid var(--accent-1);
  border-image: var(--accent-gradient) 1;
  position: relative;
  overflow: hidden;
}

.stat-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-sm);
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-trend {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}
.stat-trend.up { color: var(--success); }
.stat-trend.down { color: var(--danger); }

/* Dashboard Grids */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.charts-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.chart-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

/* Donut Chart */
.donut-chart-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
}

.donut-chart {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: conic-gradient(
    var(--accent-1) 0% 40%,
    var(--accent-2) 40% 75%,
    var(--warning) 75% 100%
  );
}

.donut-chart::after {
  content: attr(data-total);
  position: absolute;
  inset: 20px;
  background: var(--bg-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.donut-legend {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.donut-legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 14px;
}
.donut-legend-item::before {
  content: '';
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color, var(--text-muted));
}

/* Bar Chart */
.bar-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 200px;
  padding-top: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
}

.bar-chart-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
}

/* Section Title */

/* Items List/Grid */
.section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-items-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.top-item-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  transition: background var(--transition-fast);
}
.top-item-row:hover {
  background: var(--bg-card-hover);
}

.item-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}
.item-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.item-card-body h3 {
  font-size: 18px;
  margin-bottom: 4px;
}
.item-card-body .brand {
  color: var(--text-muted);
  font-size: 14px;
}
.item-card-body .price {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-1);
  margin-top: var(--spacing-sm);
}
.item-card-footer {
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

.items-grid, .active-items-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

/* Toolbar & Forms */
.items-toolbar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.search-bar {
  position: relative;
  width: 100%;
}
.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}
.search-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 12px 12px 40px;
  border-radius: var(--radius-md);
  font-size: 15px;
  transition: all var(--transition-fast);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.15);
}

.filter-tabs {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding-bottom: 4px;
}
.filter-tabs::-webkit-scrollbar { height: 4px; }

.filter-tab {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.filter-tab:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.filter-tab.active {
  background: var(--accent-1);
  color: #fff;
  border-color: var(--accent-1);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}
.form-row {
  display: flex;
  gap: var(--spacing-md);
}
.form-row > .form-group {
  flex: 1;
}
.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: all var(--transition-fast);
  font-family: inherit;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.15);
}
.form-textarea {
  min-height: 80px;
  resize: vertical;
}
.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}
.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
  display: none;
}
.form-section {
  background: var(--bg-card);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}
.form-section-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.radio-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-sm);
}
.radio-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.radio-card:hover {
  background: var(--bg-card-hover);
}
.radio-card.selected {
  border-color: var(--accent-1);
  background: rgba(0, 210, 255, 0.1);
}
.radio-card-icon {
  font-size: 24px;
  margin-bottom: var(--spacing-xs);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl) var(--spacing-lg);
  text-align: center;
  color: var(--text-muted);
}
.empty-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}
.empty-text {
  font-size: 16px;
}

/* Detail View */
.detail-header {
  margin-bottom: var(--spacing-xl);
}
.detail-header h2 {
  font-size: 28px;
  margin-bottom: 4px;
}
.detail-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}
.detail-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.detail-section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}
.detail-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}
.detail-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.detail-info-item .label {
  font-size: 13px;
  color: var(--text-muted);
}
.detail-info-item .value {
  font-size: 16px;
  font-weight: 500;
}
.detail-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

/* Compare View */
.compare-toolbar {
  margin-bottom: var(--spacing-lg);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare-table th, .compare-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}
.compare-table th {
  background: rgba(0,0,0,0.2);
  font-weight: 600;
  color: var(--text-secondary);
}
.compare-table tr:hover td {
  background: var(--bg-card-hover);
}
.compare-table tr.best {
  border-left: 4px solid var(--success);
  background: rgba(46, 213, 115, 0.05);
}

/* Settings View */
.settings-section {
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
}
.setting-row:last-child {
  border-bottom: none;
}
.setting-label {
  font-weight: 500;
}
.setting-description {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  font-family: inherit;
}
.btn:hover {
  transform: scale(1.02);
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 20px rgba(0, 210, 255, 0.4);
}
.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
}
.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  filter: brightness(1.1);
}
.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}
.btn-block {
  width: 100%;
}
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.icon-btn:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.modal-overlay.active {
  display: flex;
  opacity: 1;
}
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}
.modal-overlay.active .modal {
  transform: scale(1);
}
.modal-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-title {
  font-size: 18px;
  font-weight: 600;
}
.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
}
.modal-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
}
.modal-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  z-index: 9999;
}
.toast {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 300px;
  animation: slideInRight var(--transition-normal);
}
.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-info { border-left-color: var(--accent-1); }
.toast-content { display: flex; align-items: center; gap: 12px; }
.toast-close { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 4px; border-radius: 4px; }
.toast-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }

/* Login UI */
.login-overlay { position: fixed; inset: 0; background: var(--bg-primary); display: flex; align-items: center; justify-content: center; z-index: 10000; padding: 20px; }
.login-card { max-width: 400px; width: 100%; padding: 40px 32px; display: flex; flex-direction: column; align-items: center; }
.login-overlay.hidden { display: none !important; }

/* Utilities */
.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
.badge-active { background: rgba(46, 213, 115, 0.15); color: var(--success); }
.badge-finished { background: rgba(255, 255, 255, 0.1); color: var(--text-secondary); }
.badge-category { background: rgba(0, 210, 255, 0.15); color: var(--accent-1); }

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  transition: width 1s ease-out;
}

.text-accent { color: var(--accent-1); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 13px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 24px; }
.text-center { text-align: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }

/* --------------------------------------------------------------------------
   Dynamic Component Styles (rendered by ui.js)
   -------------------------------------------------------------------------- */

/* Dashboard Layout */
.dashboard-grid { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.lists-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

/* Donut Chart */
.donut-chart-wrapper {
  display: flex;
  justify-content: center;
  padding: var(--spacing-lg) 0;
}
.donut-chart {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.donut-inner {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8px;
}
.donut-total-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.donut-total-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: var(--spacing-md) 0;
  justify-content: center;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
.legend-color {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-label { color: var(--text-secondary); }
.legend-value { font-weight: 600; color: var(--text-primary); }
.empty-chart {
  text-align: center;
  color: var(--text-muted);
  padding: var(--spacing-xl);
}

/* Bar Chart */
.bar-chart-wrapper {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--spacing-md) 0;
}
.bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.bar-label {
  width: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}
.bar-track {
  flex: 1;
  height: 24px;
  background: var(--bg-input);
  border-radius: 12px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  border-radius: 12px;
  transition: width 1s ease-out;
  min-width: 4px;
}
.bar-value {
  width: 90px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  flex-shrink: 0;
}

/* Search Box */
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  flex: 1;
  max-width: 400px;
}
.search-icon { font-size: 16px; }
.search-box input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  width: 100%;
  font-family: inherit;
}
.search-box input::placeholder { color: var(--text-muted); }

/* Item Card (ui.js version) */
.item-card {
  cursor: pointer;
  padding: var(--spacing-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  animation: slideUp 0.3s ease both;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.item-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.item-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.category-badge {
  font-size: 24px;
}
.status-badge {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.status-active {
  background: rgba(46, 213, 115, 0.15);
  color: var(--success);
}
.status-finished {
  background: rgba(99, 110, 114, 0.15);
  color: var(--text-muted);
}
.status-broken {
  background: rgba(255, 179, 71, 0.15);
  color: var(--warning);
}
.item-card-body { flex: 1; }
.item-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}
.item-brand {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.item-stats { display: flex; flex-direction: column; gap: 6px; }
.item-stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}
.highlight-text {
  font-weight: 600;
  color: var(--accent-1);
}

/* List Card (dashboard lists) */
.list-card { padding: var(--spacing-lg); }
.list-card h3 {
  font-size: 16px;
  margin: 0 0 var(--spacing-md) 0;
  color: var(--text-primary);
}
.item-list { display: flex; flex-direction: column; gap: 8px; }
.list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.list-item:hover { background: var(--bg-card-hover); }
.list-item-rank {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #000;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}
.list-item-info { flex: 1; min-width: 0; }
.list-item-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.list-item-brand { font-size: 12px; color: var(--text-muted); }
.list-item-value {
  font-weight: 600;
  color: var(--accent-1);
  font-size: 14px;
  flex-shrink: 0;
}
.empty-list {
  text-align: center;
  color: var(--text-muted);
  padding: var(--spacing-lg);
  font-size: 14px;
}

/* Detail View */
.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-1);
  font-size: 14px;
  cursor: pointer;
  margin-bottom: var(--spacing-md);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  background: none;
  border: none;
  font-family: inherit;
}
.detail-back:hover { background: var(--bg-card); }
.detail-value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}
.value-card {
  padding: var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
}
.value-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.value-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}
.highlight-card {
  background: linear-gradient(135deg, rgba(0,210,255,0.1), rgba(0,255,136,0.1));
  border-color: var(--accent-1);
}
.highlight-card .value-number {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.primary-value { grid-column: span 2; }

/* History Cards (refills, disposable logs) */
.history-card { padding: var(--spacing-lg); }
.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}
.history-header h3 { margin: 0; font-size: 16px; }
.history-list { display: flex; flex-direction: column; gap: 8px; }
.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}
.history-date { font-size: 13px; color: var(--text-muted); min-width: 100px; }
.history-desc { flex: 1; font-size: 14px; color: var(--text-secondary); }
.history-cost { font-weight: 600; color: var(--accent-1); font-size: 14px; }

/* Disposable Stats */
.disposable-stats { display: flex; flex-direction: column; gap: 8px; }
.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  font-size: 14px;
}
.stat-row span:first-child { color: var(--text-secondary); }
.stat-row span:last-child { font-weight: 600; color: var(--text-primary); }
.refill-stats-section { margin-bottom: var(--spacing-lg); }

/* Settings */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}
.settings-card {
  padding: var(--spacing-lg);
}
.settings-card h3 {
  font-size: 18px;
  margin: 0 0 var(--spacing-lg) 0;
  color: var(--text-primary);
}
.data-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}
.data-action-item p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-sm) 0;
}
.danger-zone {
  border: 1px solid rgba(255, 71, 87, 0.3);
}
.danger-zone h3 { color: var(--danger); }

/* Type Selector (item form) */
.type-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}
.type-card {
  cursor: pointer;
}
.type-card input { display: none; }
.type-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 8px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
}
.type-card input:checked + .type-card-content {
  border-color: var(--accent-1);
  background: rgba(0, 210, 255, 0.08);
}
.type-card-content:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}
.type-icon { font-size: 24px; }
.type-name { font-size: 12px; font-weight: 500; color: var(--text-secondary); }

/* Compare View */
.compare-header {
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.compare-header label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}
.compare-results { }
.compare-table-wrapper {
  padding: var(--spacing-lg);
  overflow-x: auto;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
}
.compare-table th {
  text-align: left;
  padding: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
  font-size: 13px;
  white-space: nowrap;
}
.compare-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
  color: var(--text-primary);
}
.compare-table tr { cursor: pointer; transition: background var(--transition-fast); }
.compare-table tbody tr:hover { background: var(--bg-card-hover); }
.best-value-row {
  background: rgba(0, 255, 136, 0.06) !important;
}
.best-value-row td { font-weight: 600; }
.best-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  background: var(--accent-gradient);
  color: #000;
  font-weight: 700;
}
.highlight-val { color: var(--accent-1) !important; font-weight: 700; }

/* Outline button */
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  font-size: 14px;
}
.btn-outline:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

/* Form Controls (ui.js styled) */
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
}
.form-control:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.15);
}
textarea.form-control { resize: vertical; min-height: 70px; }
select.form-control { 
  cursor: pointer; 
  background-color: var(--bg-input); 
}
select.form-control option {
  background-color: var(--bg-input-solid);
  color: var(--text-primary);
}
.required::after {
  content: ' *';
  color: var(--danger);
}

/* Detail actions */
.detail-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

/* Chart container */
.chart-container { min-height: 200px; }

/* --------------------------------------------------------------------------
   5. Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}
@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   6. Responsive
   -------------------------------------------------------------------------- */
/* Tablet */
@media (max-width: 1024px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .charts-row { grid-template-columns: 1fr; }
  .items-grid, .active-items-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-stats { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.active {
    transform: translateX(0);
  }
  .sidebar-overlay.active {
    display: block;
    opacity: 1;
  }
  .sidebar-close {
    display: block;
  }
  .menu-btn {
    display: block;
  }
  .stats-row { grid-template-columns: 1fr; }
  .items-grid, .active-items-grid { grid-template-columns: 1fr; }
  .detail-stats { grid-template-columns: 1fr; }
  .detail-info-grid { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; gap: 0; }
}

/* Timeline Chart */
.timeline-container { width: 100%; overflow-x: auto; padding-bottom: 8px; }
.timeline-grid { display: flex; flex-direction: column; gap: 12px; min-width: 400px; }
.timeline-row { display: flex; align-items: center; gap: 16px; }
.timeline-label { width: 120px; flex-shrink: 0; font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-primary); text-align: left; }
.timeline-track { flex: 1; height: 16px; background: var(--bg-input); border-radius: 8px; position: relative; overflow: hidden; }
.timeline-bar { position: absolute; height: 100%; top: 0; border-radius: 8px; box-shadow: var(--shadow-sm); transition: all 0.5s ease; opacity: 0.9; cursor: help; }
.timeline-bar:hover { opacity: 1; filter: brightness(1.2); }