/* ParetoCo Design Space Explorer - "Soft Pastel Data" Flat Aesthetic
   Pure-white app background, zero gradients, zero drop-shadows, 8px radius architecture
*/

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-app: #FFFFFF;
  --bg-surface: #EBF4FA;
  --bg-subtle: #DDE9F5;
  --bg-input: #EBF4FA;
  --bg-code: #1E293B;

  --border-color: #B6CBE0;
  --border-subtle: #C8D8E8;
  --border-focus: #475569;

  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-light: #F8FAFC;

  --nav-active-bg: #AECDF4;
  --primary: #AECDF4;
  --primary-hover: #9DC1EC;
  --primary-text: #1E293B;

  /* Metric Card Solid Backgrounds (Softer Pastel Accents) */
  --accent-processors: #FFD1DC;
  /* Softer Pastel Blossom Pink */
  --accent-applications: #C8B6F6;
  /* Slightly Darker Pastel Purple */
  --accent-actors: #B8E5BA;
  /* Slightly Darker Pastel Mint Green */
  --accent-solutions: #FFE5CC;
  /* Softer Pastel Apricot Peach */

  --danger: #FFD1DC;
  --danger-hover: #F8C0CC;
  --success: #B8E5BA;

  --sidebar-w: 260px;
  --topbar-h: 64px;
  --radius: 8px;
  --radius-sm: 6px;
}

html {
  font-size: 14px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}


.mesh-bg {
  display: none !important;
}

/* ── Scrollbars ─────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── Responsive Image Containers (No SVGs) ──────────────────── */
.img-wrapper,
.img-container,
.brand-logo-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background-color: transparent;
  border-radius: 4px;
}

.img-wrapper img,
.img-container img,
.brand-logo-wrapper img,
img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background-color: var(--bg-app);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform .2s ease;
}

.sidebar-brand {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border-color);
  box-sizing: border-box;
}

.brand-logo-wrapper {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background-color: transparent;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.brand-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 6px;
}

.brand-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
}

.nav-section-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 12px 10px 4px 10px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
  border: 1px solid transparent;
}

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

.nav-item.active {
  background-color: var(--nav-active-bg) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color) !important;
  font-weight: 600;
}

.nav-item.active .nav-icon {
  color: var(--text-primary) !important;
}

.nav-icon {
  font-size: 1.05rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-app);
}

.engine-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-muted);
}

.status-dot.idle {
  background-color: var(--text-muted);
}

.status-dot.running {
  background-color: var(--nav-active-bg);
}

.status-dot.success {
  background-color: #52B788;
}

.status-dot.error {
  background-color: #E63946;
}

/* ── Main Layout ────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-app);
}

.top-bar {
  height: var(--topbar-h);
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 90;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 1.1rem;
  padding: 6px 10px;
  cursor: pointer;
}

.page-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page {
  display: none;
  padding: 24px 28px;
  flex: 1;
}

.page.active {
  display: block;
}

/* ── Data Panels & Containers ───────────────────────────────── */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 20px;
  overflow: hidden;
}

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

.card-header h2,
.card-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

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

.card-body {
  padding: 20px;
}

/* ── Soft Pastel Data Metric Cards ──────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.kpi-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Solid Pastel Accents per specification */
.kpi-card:nth-child(1),
.kpi-coral,
.kpi-processors {
  background-color: var(--accent-processors) !important;
}

.kpi-card:nth-child(2),
.kpi-blue,
.kpi-applications {
  background-color: var(--accent-applications) !important;
}

.kpi-card:nth-child(3),
.kpi-green,
.kpi-actors {
  background-color: var(--accent-actors) !important;
}

.kpi-card:nth-child(4),
.kpi-amber,
.kpi-solutions {
  background-color: var(--accent-solutions) !important;
}

.kpi-icon {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  background-color: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: var(--text-primary) !important;
}

.kpi-body {
  display: flex;
  flex-direction: column;
}

.kpi-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.kpi-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

/* ── Grids & Layouts ────────────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  line-height: 1.2;
}

.btn:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-focus);
}

.btn:active {
  background-color: var(--nav-active-bg);
}

.btn-primary {
  background-color: var(--nav-active-bg);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--border-focus);
}

.btn-outline {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-focus);
}

.btn-danger {
  background-color: var(--danger);
  border-color: var(--border-color);
  color: var(--text-primary);
}

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

.btn-sm {
  padding: 6px 10px;
  font-size: 0.78rem;
}

.btn-xs {
  padding: 3px 8px;
  font-size: 0.7rem;
}

/* ── Form Controls & Inputs ─────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.form-single {
  grid-template-columns: 1fr;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.text-input,
.select-input,
select,
input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  padding: 8px 12px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: border-color 0.15s ease;
}

.text-input:focus,
.select-input:focus,
select:focus,
input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--border-focus);
}

textarea.text-input {
  resize: vertical;
}

/* ── Tables & Data Grid ─────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
  background-color: var(--bg-surface);
}

th {
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

tr:hover td {
  background-color: var(--bg-subtle);
}

.table-input {
  width: 100%;
  box-sizing: border-box;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--text-primary);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.table-input:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: #FFFFFF;
}

.table-input-sm {
  width: 75px;
}

/* ── Code, Pre & Log Panels ─────────────────────────────────── */
.log-output,
.config-preview,
pre {
  background-color: var(--bg-code);
  color: var(--text-light);
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  line-height: 1.5;
  overflow-x: auto;
  max-height: 380px;
}

/* ── Empty States ───────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 36px 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.empty-state code {
  background-color: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  color: var(--text-primary);
}

.badge.blue {
  background-color: var(--accent-applications);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.badge.green {
  background-color: var(--accent-actors);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.badge.coral {
  background-color: var(--accent-processors);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.badge.violet {
  background-color: var(--accent-solutions);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* ── Architecture Studio & Interactive Canvas ───────────────── */
.studio-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  height: calc(100vh - 120px);
}

.studio-left {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.studio-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
}

.studio-tab {
  flex: 1;
  padding: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  background-color: var(--bg-subtle);
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
}

.studio-tab.active {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-bottom-color: var(--border-focus);
}

.studio-palette-container,
.studio-inspector-container {
  padding: 14px;
}

.studio-palette-title,
.studio-inspector-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.studio-center {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.studio-toolbar {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-surface);
}

.studio-zoom-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-left: auto;
  font-weight: 500;
}

.studio-canvas,
#sdf-canvas,
#results-chart {
  width: 100%;
  height: 100%;
  display: block;
}

#pareto-scatter-canvas {
  width: 100%;
  height: 420px;
  min-height: 420px;
  display: block;
  cursor: crosshair;
}

#pareto-pc-canvas {
  width: 100%;
  height: 280px;
  min-height: 280px;
  display: block;
}

/* ── Pareto Explorer Layout ─────────────────────────────────── */
.pareto-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.pareto-dims {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ── Continuous DSE Layout ──────────────────────────────────── */
.dse-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.ws-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.ws-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ws-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
}

.session-item {
  padding: 12px 14px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  margin-bottom: 8px;
}

.session-item:hover {
  border-color: var(--border-focus);
  background-color: var(--bg-subtle);
}

.session-item.active {
  border-color: var(--border-focus);
  background-color: var(--nav-active-bg);
}

/* ── Toast Notifications ────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast.success {
  border-left: 4px solid #52B788;
}

.toast.error {
  border-left: 4px solid var(--danger);
}

.toast.info {
  border-left: 4px solid var(--nav-active-bg);
}

.hidden {
  display: none !important;
}

/* ── Responsive Grid ────────────────────────────────────────── */
@media (max-width: 1024px) {

  .dashboard-grid,
  .two-col,
  .pareto-layout,
  .dse-layout,
  .studio-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .menu-toggle {
    display: inline-flex;
  }
}

/* ── Pareto Tooltip (Floating, Non-Interactive) ────────────── */
.pareto-tooltip {
  position: fixed !important;
  z-index: 99999 !important;
  pointer-events: none !important;
  user-select: none !important;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  font-family: inherit;
  font-size: 0.8rem;
  line-height: 1.4;
  max-width: 280px;
  display: none;
}

.pareto-tooltip .tooltip-title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pareto-tooltip .tooltip-badge {
  background-color: var(--accent-actors);
  color: #1b4332;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.pareto-tooltip .tooltip-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 8px;
  margin-bottom: 6px;
}

.pareto-tooltip .tooltip-dim {
  display: flex;
  justify-content: space-between;
  gap: 6px;
}

.pareto-tooltip .tooltip-dim-label {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.pareto-tooltip .tooltip-dim-value {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.75rem;
}

.pareto-tooltip .tooltip-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 4px;
  margin-top: 4px;
}