/* --- CSS VARIABLES & TOKENS --- */
:root {
  /* Color Palette (sRGB hex / HSL for smooth transitions) */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-dark: #1e40af;
  --color-primary-light: #eff6ff;
  --color-accent: #0d9488;
  --color-accent-light: #f0fdfa;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-success-light: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-danger: #ef4444;
  --color-danger-light: #fef2f2;
  
  /* Neutrals */
  --color-bg-base: #f8fafc;
  --color-bg-surface: #ffffff;
  --color-bg-sidebar: #0f1e36;
  --color-border: #e2e8f0;
  
  /* Ink / Text Colors (Adjusted for WCAG AA Contrast Compliance) */
  --color-ink-base: #0f172a;
  --color-ink-muted: #475569;
  --color-ink-light: #64748b;
  --color-ink-inverse: #ffffff;
  
  /* Typography */
  --font-display: 'Outfit', 'Sarabun', sans-serif;
  --font-body: 'Inter', 'Sarabun', sans-serif;
  
  /* Rounded Corners */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 15px rgba(37, 99, 235, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- REDUCED MOTION ACCESSIBILITY --- */
@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;
  }
}



/* --- FOCUS STATES --- */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --- RESET & BASE STYLES --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-base);
  color: var(--color-ink-base);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- APP LAYOUT --- */
.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar Navigation */
.app-sidebar {
  width: 280px;
  background-color: var(--color-bg-sidebar);
  color: var(--color-ink-inverse);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform var(--transition-normal);
  z-index: 100;
}

.sidebar-header {
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.3);
}

.logo-text h1 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.logo-text span {
  font-size: 0.75rem;
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-md) var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

/* Custom Scrollbar for Sidebar (Webkit) */
.sidebar-nav::-webkit-scrollbar,
.app-sidebar::-webkit-scrollbar {
  width: 5px;
}

.sidebar-nav::-webkit-scrollbar-track,
.app-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb,
.app-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.18);
  border-radius: 10px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover,
.app-sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-ink-light);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
  overflow: hidden;
}

.nav-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item:focus-visible, .nav-group-header:focus-visible {
  outline: 2px solid var(--color-ink-inverse);
  outline-offset: -2px;
}

.nav-item i {
  font-size: 1rem;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--color-ink-inverse);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-ink-inverse);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  font-weight: 600;
}

/* Sidebar Nav Groups */
.nav-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-xs);
}

.nav-group-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  color: var(--color-ink-light);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.nav-group-header:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--color-ink-inverse);
}

.nav-group-header i:first-child {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.nav-group-header .chevron {
  margin-left: auto;
  font-size: 0.8rem;
  transition: transform var(--transition-normal);
}

.hidden {
  display: none !important;
}

.nav-sub-menu {
  display: none;
  flex-direction: column;
  margin-top: var(--space-xs);
  margin-left: 28px;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  padding-left: var(--space-xs);
}

.nav-group.active .nav-sub-menu {
  display: flex;
  animation: fadeIn var(--transition-fast) forwards;
}

.nav-group.active .nav-group-header .chevron {
  transform: rotate(180deg);
}

.nav-sub-menu .nav-item {
  padding: 10px var(--space-md);
  font-size: 0.9rem;
}

.sidebar-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.user-avatar {
  width: 36px;
  height: 36px;
  background-color: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: white;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink-inverse);
}

.user-role {
  font-size: 0.75rem;
  color: var(--color-ink-light);
}

.logout-btn {
  background: transparent;
  border: none;
  color: var(--color-ink-light);
  cursor: pointer;
  font-size: 1.1rem;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin-left: auto;
}

.logout-btn:hover {
  color: var(--color-danger);
  background-color: rgba(239, 68, 68, 0.15);
}

/* Main Content Area */
.app-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}

.app-header {
  height: 70px;
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xl);
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-title h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-ink-base);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.mobile-menu-btn {
  display: none;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background-color: var(--color-bg-base);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.filter-select {
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink-base);
  outline: none;
  cursor: pointer;
}

.icon-button {
  background: none;
  border: none;
  color: var(--color-ink-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: 50%;
  transition: background-color var(--transition-fast);
  position: relative;
}

.icon-button:hover {
  background-color: var(--color-bg-base);
  color: var(--color-ink-base);
}

.notification-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background-color: var(--color-danger);
  border-radius: 50%;
}

/* Page Body Container */
.page-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* --- COMPONENTS & DASHBOARD CARDS --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.stat-card {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(226, 232, 240, 0.9);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03), 0 1px 2px rgba(15, 23, 42, 0.02);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -6px rgba(15, 23, 42, 0.08), 0 4px 12px -4px rgba(15, 23, 42, 0.04);
  border-color: rgba(37, 99, 235, 0.25);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-ink-muted);
}

.stat-header span {
  font-size: 0.9rem;
  font-weight: 500;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.stat-icon.primary { background-color: var(--color-primary-light); color: var(--color-primary); }
.stat-icon.accent { background-color: var(--color-accent-light); color: var(--color-accent); }
.stat-icon.success { background-color: var(--color-success-light); color: var(--color-success); }
.stat-icon.warning { background-color: var(--color-warning-light); color: var(--color-warning); }

.stat-value {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-ink-base);
}

.stat-change {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
  font-weight: 600;
}

.stat-change.up { color: var(--color-success); }
.stat-change.down { color: var(--color-danger); }

.stat-card p {
  font-size: 0.75rem;
  color: var(--color-ink-light);
}

/* Visualization Grid */
.dashboard-grid-2x1 {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: var(--space-lg);
}

.dashboard-grid-2x1 > * {
  min-width: 0;
}

@media (max-width: 1024px) {
  .dashboard-grid-2x1 {
    grid-template-columns: 1fr;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  
  .app-sidebar.mobile-open {
    transform: translateX(0);
  }
}

.content-card {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(226, 232, 240, 0.9);
  padding: var(--space-lg);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03), 0 1px 2px rgba(15, 23, 42, 0.02);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.content-card:hover {
  box-shadow: 0 10px 24px -6px rgba(15, 23, 42, 0.07);
}

.card-title-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title-bar h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-ink-base);
}

/* SVG Custom Charts */
.chart-container {
  position: relative;
  height: 250px;
  width: 100%;
}

.chart-svg {
  width: 100%;
  height: 100%;
}

/* Grid & Data Tables */
.data-table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  color: var(--color-ink-muted);
  font-weight: 600;
  padding: 12px var(--space-md);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.8rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.data-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink-base);
  transition: background-color var(--transition-fast);
}

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

.data-table tr:hover td {
  background-color: var(--color-primary-light);
}

.data-table tr:nth-child(even) td {
  background-color: rgba(248, 250, 252, 0.6);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.status-badge.success { background-color: var(--color-success-light); color: var(--color-success); }
.status-badge.warning { background-color: var(--color-warning-light); color: var(--color-warning); }
.status-badge.danger { background-color: var(--color-danger-light); color: var(--color-danger); }
.status-badge.info { background-color: var(--color-primary-light); color: var(--color-primary); }

/* --- DRILL-DOWN CONTAINER & NAVIGATION --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  font-weight: 500;
}

.breadcrumb span {
  color: var(--color-ink-muted);
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  cursor: pointer;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* --- OTHER PAGES & VIEWS --- */
.hidden {
  display: none !important;
}

/* API & ETL Pipelines styles */
.pipeline-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background-color: var(--color-bg-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.pipeline-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pipeline-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  position: relative;
}

.step-node {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  z-index: 2;
}

.step-node.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.1);
}

.step-node.success {
  border-color: var(--color-success);
  background-color: var(--color-success-light);
}

/* --- TRANSITIONS & ANIMATIONS --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-body > * {
  animation: fadeIn var(--transition-normal) forwards;
}

/* Segmented Control / Tab selector */
.tab-container {
  display: flex;
  background-color: var(--color-bg-base);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  width: fit-content;
}

.tab-btn {
  background: none;
  border: none;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn.active {
  background-color: var(--color-bg-surface);
  color: var(--color-ink-base);
  box-shadow: var(--shadow-sm);
}

/* Lineage & flow chart styling */
.lineage-chart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
}

.lineage-node {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  width: 250px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.lineage-node.primary {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.lineage-arrow {
  font-size: 1.2rem;
  color: var(--color-ink-light);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* --- STAR SCHEMA DIAGRAM --- */
.star-schema-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
  overflow-x: auto;
}

.star-schema-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, auto);
  gap: var(--space-xl);
  align-items: center;
  justify-items: center;
  position: relative;
  min-width: 650px;
}

.schema-table {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 190px;
  box-shadow: var(--shadow-sm);
  font-size: 0.8rem;
  overflow: hidden;
  z-index: 2;
}

.schema-table.fact {
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(37, 99, 235, 0.2);
  grid-column: 2;
  grid-row: 2;
}

.schema-table.dim {
  border-color: var(--color-accent);
}

.schema-table-header {
  background-color: var(--color-bg-base);
  padding: 8px;
  font-weight: 600;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.schema-table.fact .schema-table-header {
  background-color: var(--color-primary);
  color: white;
  border-bottom: none;
}

.schema-table.dim .schema-table-header {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
}

.schema-table-body {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.schema-table-body div {
  display: flex;
  justify-content: space-between;
}

.schema-pk {
  color: var(--color-warning);
  font-weight: 700;
  margin-right: 4px;
}

.schema-fk {
  color: var(--color-primary);
  font-weight: 600;
  margin-right: 4px;
}

/* Connectors */
.schema-connector {
  position: absolute;
  background-color: var(--color-ink-light);
  z-index: 1;
}

.schema-connector.h {
  height: 2px;
  width: 70%;
  top: 50%;
  left: 15%;
}

.schema-connector.v {
  width: 2px;
  height: 80%;
  left: 50%;
  top: 10%;
}

.api-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  font-size: 0.85rem;
}

/* Prevent horizontal page overflow */
.app-content, .page-body {
  overflow-x: hidden;
}

/* --- ADAPTATION & RESPONSIVE BREAKPOINTS --- */

/* Hide mobile toggle button on desktop */
.mobile-menu-btn {
  display: none;
}

/* Medium Screens & Laptops (<= 1200px) */
@media (max-width: 1200px) {
  .dashboard-grid-2x1 {
    grid-template-columns: 1fr;
  }
}

/* Tablet & Mobile Adaptation (<= 1024px) */
@media (max-width: 1024px) {
  .mobile-menu-btn {
    display: flex !important;
  }
  
  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }
  
  .app-sidebar.mobile-open {
    transform: translateX(0);
  }

  .app-content {
    width: 100vw;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .api-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Small Mobile Devices (<= 640px) */
@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .api-stats-grid {
    grid-template-columns: 1fr;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    height: auto;
  }

  .header-left {
    width: 100%;
    justify-content: flex-start;
  }

  .header-right {
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .filter-bar {
    flex: 1;
    min-width: 130px;
  }

  .page-body {
    padding: var(--space-md);
  }

  .lineage-flow-container > div {
    flex-direction: column !important;
    align-items: center !important;
  }

  .lineage-card {
    width: 100% !important;
  }

  .data-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* Touch Input Adaptation (Coarse Pointer: 44px min target size) */
@media (pointer: coarse) {
  .nav-item, 
  .nav-group-header, 
  .tab-btn, 
  .filter-select, 
  .icon-button {
    min-height: 44px;
    padding-top: 10px;
    padding-bottom: 10px;
  }
}

/* Print Adaptation (Screen -> Print) */
@media print {
  .app-sidebar, 
  .app-header, 
  .tab-btn, 
  .filter-bar,
  .mobile-menu-btn {
    display: none !important;
  }

  body, .app-container, .app-content {
    background: #ffffff !important;
    color: #000000 !important;
    height: auto !important;
    overflow: visible !important;
    width: 100% !important;
  }

  .page-body {
    padding: 0 !important;
  }

  .page-view {
    display: block !important;
  }

  .content-card, .stat-card {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
  }
}

/* --- LOGIN SCREEN STYLES --- */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.25), transparent 50%),
              radial-gradient(circle at bottom left, rgba(14, 165, 233, 0.2), transparent 50%),
              linear-gradient(135deg, #0b132b 0%, #1c2541 50%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 1;
  visibility: visible;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.login-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.login-card {
  background: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.3);
  width: 100%;
  max-width: 440px;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  backdrop-filter: blur(16px);
  animation: loginCardAppear 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes loginCardAppear {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.login-brand {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.login-logo {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.85rem;
  box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4);
  margin-bottom: 4px;
}

.login-brand h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-ink-base);
  letter-spacing: -0.5px;
}

.login-brand p {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-base);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper i {
  position: absolute;
  left: 14px;
  color: var(--color-ink-muted);
  font-size: 0.95rem;
}

.input-wrapper input {
  width: 100%;
  padding: 12px 14px 12px 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink-base);
  background-color: var(--color-bg-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  background-color: #ffffff;
}

.login-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-ink-muted);
  cursor: pointer;
}

.forgot-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.forgot-link:hover {
  text-decoration: underline;
}

.login-submit-btn {
  width: 100%;
  padding: 14px;
  background-color: var(--color-primary);
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff !important;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.login-submit-btn:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
}

.demo-login-section {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.demo-login-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
}

.demo-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
}

.demo-chip {
  background-color: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 6px 12px;
  font-size: 0.775rem;
  font-weight: 500;
  color: var(--color-ink-base);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.demo-chip:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* --- NOTIFICATION DROPDOWN STYLES --- */
.notification-wrapper {
  position: relative;
  display: inline-flex;
}

.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background-color: var(--color-danger);
  color: #ffffff;
  border-radius: 9px;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-bg-surface);
  line-height: 1;
}

.notification-badge.hidden {
  display: none !important;
}

.notification-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 360px;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: dropdownAppear 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dropdownAppear {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.notif-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-bg-base);
}

.notif-count-badge {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.notif-clear-btn {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.notif-clear-btn:hover {
  background-color: var(--color-primary-light);
  text-decoration: underline;
}

.notif-list {
  max-height: 340px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.notif-item {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.notif-item:hover {
  background-color: var(--color-bg-base);
}

.notif-item.unread {
  background-color: var(--color-primary-light);
}

.notif-item.unread:hover {
  background-color: #e2e8f0;
}

.notif-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.notif-icon.danger { background-color: var(--color-danger-light); color: var(--color-danger); }
.notif-icon.warning { background-color: var(--color-warning-light); color: var(--color-warning); }
.notif-icon.success { background-color: var(--color-success-light); color: var(--color-success); }

.notif-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.notif-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-base);
}

.notif-desc {
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  line-height: 1.35;
}

.notif-time {
  font-size: 0.725rem;
  color: var(--color-ink-light);
  margin-top: 4px;
}

.notif-footer {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-base);
  text-align: center;
}

.notif-footer-link {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.notif-footer-link:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .notification-dropdown {
    width: 290px;
    right: -40px;
  }
}

/* --- CUSTOM MODERN ROUNDED DROPDOWN STYLES --- */
.custom-dropdown {
  position: relative;
  display: inline-block;
}

.custom-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.custom-dropdown-btn:hover {
  background-color: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.06);
}

.custom-dropdown-btn .notif-chevron {
  font-size: 0.75rem;
  color: var(--color-ink-muted);
  transition: transform var(--transition-fast);
}

.custom-dropdown.open .custom-dropdown-btn .notif-chevron {
  transform: rotate(180deg);
}

.custom-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 195px;
  background-color: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: 16px; /* High rounded corners for modern popover */
  box-shadow: 0 12px 32px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.06);
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1000;
  animation: popoverFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.custom-dropdown.open .custom-dropdown-menu {
  display: flex;
}

@keyframes popoverFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.custom-dropdown-item {
  padding: 10px 14px;
  border-radius: 10px; /* Modern rounded option item */
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.custom-dropdown-item:hover {
  background-color: #eff6ff;
  color: #2563eb;
  font-weight: 600;
}

.custom-dropdown-item.active {
  background-color: #2563eb;
  color: #ffffff;
  font-weight: 600;
}

/* --- MODAL STYLES --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

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

.modal-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 540px;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  animation: modalFadeIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.94) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

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

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-ink-base);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-ink-muted);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--color-danger);
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-base);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-ink-base);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  margin-top: var(--space-lg);
}