/* === VERCEL-STYLE MINIMALIST MODERN LAYOUT SYSTEM === */

/* App Shell Structure */
.app-container {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-rows: 56px 1fr;
  min-height: 100vh;
  background-color: var(--bg-canvas);
}

/* ==========================================================================
   Top Navigation Bar
   ========================================================================== */
.navbar {
  grid-column: 1 / -1;
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-default);
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 200;
  height: 56px;
  gap: 12px;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.navbar-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.navbar-brand {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--fg-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.navbar-brand svg, .navbar-brand .logo-icon {
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.navbar-separator {
  color: var(--border-hover);
  font-weight: 300;
  user-select: none;
  flex-shrink: 0;
}

.navbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  white-space: nowrap;
  min-width: 0;
}

.navbar-breadcrumb a {
  color: var(--fg-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.navbar-breadcrumb a:hover {
  color: var(--fg-primary);
}

.navbar-breadcrumb .active-item {
  color: var(--fg-primary);
  font-weight: 500;
  white-space: nowrap;
}

.navbar-search-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  color: var(--fg-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.navbar-search-btn:hover {
  border-color: var(--border-hover);
  color: var(--fg-secondary);
}

.navbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 1;
  flex-shrink: 0;
}

.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--fg-secondary);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background-color: var(--bg-surface-hover);
  color: var(--fg-primary);
  border-color: var(--border-hover);
}

.avatar-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0070f3, #7928ca);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
}

/* ==========================================================================
   Sidebar Navigation
   ========================================================================== */
.sidebar {
  grid-row: 2;
  background-color: var(--bg-canvas);
  border-right: 1px solid var(--border-default);
  overflow-y: auto;
  padding: var(--spacing-md) 0;
  display: flex;
  flex-direction: column;
}

.sidebar-section {
  margin-bottom: var(--spacing-lg);
}

.sidebar-heading {
  color: var(--fg-muted);
  padding: 6px var(--spacing-md);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sidebar-menu {
  list-style: none;
}

.sidebar-menu li {
  margin: 1px 0;
}

.sidebar-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px var(--spacing-md);
  color: var(--fg-secondary);
  text-decoration: none;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
  margin: 0 8px;
  transition: all var(--transition-fast);
}

.sidebar-menu a .link-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-menu a:hover {
  background-color: var(--bg-surface-hover);
  color: var(--fg-primary);
}

.sidebar-menu a.active {
  background-color: var(--bg-surface-elevated);
  color: var(--fg-primary);
  font-weight: 500;
  border: 1px solid var(--border-default);
}

.sidebar-icon {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  opacity: 0.8;
}

.sidebar-badge {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background-color: var(--bg-subtle);
  color: var(--fg-muted);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ==========================================================================
   Horizontal Stage Pipeline (18 Stages Stepper Bar)
   ========================================================================== */
.stage-pipeline-container, .stage-pipeline-wrapper {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  margin-bottom: var(--spacing-lg);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}

.stage-pipeline-container::-webkit-scrollbar,
.stage-pipeline-wrapper::-webkit-scrollbar {
  height: 4px;
}

.stage-pipeline-container::-webkit-scrollbar-thumb,
.stage-pipeline-wrapper::-webkit-scrollbar-thumb {
  background-color: var(--border-default);
  border-radius: 4px;
}

.stage-pipeline-track, .stage-pipeline {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: max-content;
  padding: 2px 0;
}

.stage-step, .stage-nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fg-secondary);
  background-color: transparent;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.stage-step:hover, .stage-nav-pill:hover {
  background-color: var(--bg-surface-hover);
  color: var(--fg-primary);
  border-color: var(--border-subtle);
}

.stage-step.active, .stage-step.current-stage, .stage-nav-pill.active {
  background-color: var(--bg-surface-elevated);
  color: var(--accent-blue);
  border-color: var(--accent-blue-border);
  font-weight: 600;
  box-shadow: 0 0 0 1px var(--accent-blue-border);
}

[data-theme="dark"] .stage-step.active, 
[data-theme="dark"] .stage-step.current-stage, 
[data-theme="dark"] .stage-nav-pill.active {
  background-color: rgba(56, 189, 248, 0.08);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.3);
}

.stage-step.completed {
  color: var(--fg-primary);
}

.stage-step.completed:hover {
  border-color: var(--border-hover);
}

.stage-num {
  font-family: var(--font-mono);
  font-size: 0.675rem;
  padding: 1px 5px;
  border-radius: 3px;
  background-color: var(--bg-subtle);
  color: var(--fg-muted);
  font-weight: 600;
}

.stage-step.active .stage-num, .stage-step.current-stage .stage-num {
  background-color: var(--accent-blue);
  color: #ffffff;
}

.stage-step.completed .stage-num {
  background-color: var(--accent-success-subtle);
  color: var(--accent-success);
}

.stage-name {
  font-size: 0.75rem;
  letter-spacing: -0.01em;
}

.stage-step.pending {
  opacity: 0.55;
}

.stage-step.pending:hover {
  opacity: 0.9;
}

.stage-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--fg-muted);
}

.stage-step.completed .stage-dot, .stage-nav-pill.completed .stage-dot {
  background-color: var(--accent-success);
}

.stage-step.active .stage-dot, .stage-nav-pill.in-progress .stage-dot {
  background-color: var(--accent-blue);
  box-shadow: 0 0 8px var(--accent-blue);
}

.stage-divider {
  color: var(--border-hover);
  font-size: 0.75rem;
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */
.main-content {
  grid-row: 2;
  grid-column: 2;
  overflow-y: auto;
  background-color: var(--bg-canvas);
  padding: var(--spacing-xl) var(--spacing-2xl);
  max-width: 1400px;
  width: 100%;
}

.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.page-title h1 {
  margin-bottom: 4px;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ==========================================================================
   Stat Cards & Metrics Grid
   ========================================================================== */
.status-bar, .stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

/* Responsive Card Grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  border-color: var(--border-hover);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  font-family: var(--font-sans);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-mono);
}

.stat-trend.up {
  color: #34d399;
}

.stat-trend.down {
  color: #f87171;
}

.stat-trend.neutral {
  color: var(--fg-muted);
}

/* ==========================================================================
   Dashboard Two-Column Grid
   ========================================================================== */
.dashboard-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}

.dashboard-full-width {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Right Sidebar Widget Stack */
.sidebar-right {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ==========================================================================
   Timeline
   ========================================================================== */
.timeline {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

.timeline-item {
  display: flex;
  gap: 14px;
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 18px;
  bottom: 0;
  width: 1px;
  background-color: var(--border-default);
}

.timeline-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-hover);
  margin-top: 3px;
  flex-shrink: 0;
  z-index: 1;
}

.timeline-dot.completed {
  border-color: var(--accent-success);
  background-color: var(--accent-success);
}

.timeline-dot.active, .timeline-dot.pending {
  border-color: var(--accent-blue);
  background-color: var(--bg-surface);
}

.timeline-content h4 {
  margin: 0 0 2px 0;
  font-size: 0.875rem;
  font-weight: 500;
}

.timeline-content p {
  font-size: 0.775rem;
  color: var(--fg-muted);
  margin: 0;
}

/* ==========================================================================
   Task List
   ========================================================================== */
.task-list {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.task-list-header {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-surface-elevated);
}

.task-list-header h3 {
  margin: 0;
  font-size: 0.875rem;
}

.task-item {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: background-color var(--transition-fast), opacity var(--transition-fast);
}

.task-item:hover {
  background-color: var(--bg-surface-hover);
}

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

.task-content {
  flex: 1;
}

.task-title {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--fg-primary);
  margin-bottom: 3px;
  transition: color var(--transition-fast);
}

.task-item.completed .task-title {
  text-decoration: line-through;
  color: var(--fg-muted);
}

.task-meta {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ==========================================================================
   Sections & Accordions
   ========================================================================== */
.section {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.section:hover {
  border-color: var(--border-hover);
}

.section-header {
  padding: 14px 18px;
  background-color: var(--bg-surface);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.section-header:hover {
  background-color: var(--bg-surface-hover);
}

.section-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

.section-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--fg-muted);
  transition: transform var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.section-toggle.open {
  transform: rotate(180deg);
}

.section-content {
  display: none;
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.section-content.open {
  display: block;
}

/* ==========================================================================
   Tab Navigation Component
   ========================================================================== */
.tab-container {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: var(--spacing-lg);
}

.tab-button {
  padding: 8px 14px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--fg-muted);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: -1px;
}

.tab-button:hover {
  color: var(--fg-primary);
}

.tab-button.active {
  color: var(--fg-primary);
  border-bottom-color: var(--btn-primary-bg);
  font-weight: 600;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ==========================================================================
   Chart / Visual Containers
   ========================================================================== */
.chart-placeholder {
  background: var(--bg-surface-elevated);
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--fg-muted);
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

/* Sparkline SVG container */
.sparkline-svg {
  width: 100%;
  height: 36px;
  overflow: visible;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 900px) {
  .app-container {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .dashboard-container {
    grid-template-columns: 1fr;
  }

  .main-content {
    padding: var(--spacing-lg);
  }
}