/* ==========================================================================
   NexaChat Multi-Tenant AI Platform Design System
   Modern Light & Dark Theme with Thai Typography
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Prompt:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Default Theme: Modern Light */
  --bg-base: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F1F5F9;
  --bg-surface-glass: rgba(255, 255, 255, 0.88);
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8FAFC;
  --border-subtle: #E2E8F0;
  --border-focus: rgba(99, 102, 241, 0.6);
  --border-glass: #CBD5E1;
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-dim: #94A3B8;
  --text-inverse: #FFFFFF;

  /* Primary Accent: Indigo & Electric Cyan */
  --primary-50: #EEF2FF;
  --primary-100: #E0E7FF;
  --primary-500: #6366F1;
  --primary-600: #4F46E5;
  --primary-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #3B82F6 100%);
  --primary-glow: 0 4px 18px rgba(99, 102, 241, 0.25);

  /* Brand Accents */
  --accent-cyan: #0284C7;
  --accent-emerald: #059669;
  --accent-amber: #D97706;
  --accent-rose: #E11D48;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', 'Prompt', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --sidebar-width: 270px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Effects */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.07), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
  --backdrop-blur: blur(16px);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-base: #0B0F19;
  --bg-surface: #111827;
  --bg-surface-elevated: #1F2937;
  --bg-surface-glass: rgba(17, 24, 39, 0.8);
  --bg-card: rgba(31, 41, 55, 0.7);
  --bg-card-hover: rgba(55, 65, 81, 0.8);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  --border-glass: rgba(255, 255, 255, 0.12);
  --text-main: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-dim: #6B7280;
  --text-inverse: #111827;
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

/* Base Reset & Styling */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 12% 8%, rgba(99, 102, 241, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 88% 85%, rgba(234, 88, 12, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

[data-theme="dark"] body {
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(249, 115, 22, 0.08) 0%, transparent 40%);
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================================
   App Shell Layout
   ========================================================================== */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-surface-glass);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  transition: transform var(--transition-normal);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.02);
}

/* On the NexaChat platform itself, hide any stray widget elements accidentally attached to body */
body > #widget-chat-stage,
body > #nexa-floating-widget-root,
body > #widget-backdrop-dimmer {
  display: none !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  gap: 0.75rem;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: var(--primary-glow);
  border: 1px solid var(--border-subtle);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

/* Tenant Context Switcher in Sidebar */
.tenant-context-card {
  margin: 1.25rem 1rem 0.5rem 1rem;
  padding: 0.85rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  position: relative;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.5rem !important;
  box-sizing: border-box !important;
}

.tenant-context-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.tenant-selector-select {
  width: 100% !important;
  min-width: 0 !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  display: block !important;
  flex: none !important;
  transition: border-color var(--transition-fast);
}

.tenant-selector-select:focus {
  border-color: var(--primary-500);
}

.btn-create-project-wizard {
  width: 100% !important;
  box-sizing: border-box !important;
}

/* Sidebar Nav */
.sidebar-nav {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding: 0.75rem 0.75rem 0.35rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

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

.nav-item.active {
  color: var(--primary-600);
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.25);
  font-weight: 700;
}

[data-theme="dark"] .nav-item.active {
  color: #FFFFFF;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(139, 92, 246, 0.15) 100%);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.nav-item .icon {
  font-size: 1.15rem;
  width: 22px;
  display: flex;
  justify-content: center;
}

.nav-item .badge {
  margin-left: auto;
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.badge-pulse {
  background: rgba(16, 185, 129, 0.15);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.25);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.75; transform: scale(1.05); }
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pilot-status-banner {
  background: rgba(234, 88, 12, 0.08);
  border: 1px solid rgba(234, 88, 12, 0.2);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
}

.pilot-status-banner strong {
  color: #EA580C;
  display: block;
  margin-bottom: 0.2rem;
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Top Navigation Bar */
.top-header {
  height: var(--header-height);
  background: var(--bg-surface-glass);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.breadcrumb-trail {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.breadcrumb-active {
  color: var(--text-main);
  font-weight: 700;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Role Mode Pill Toggle */
.role-mode-toggle {
  display: flex;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 3px;
}

.role-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.role-btn.active {
  background: #FFFFFF;
  color: var(--primary-600);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .role-btn.active {
  background: var(--primary-gradient);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* Quick Action Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-glass);
}

.btn-success {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.12);
  color: #E11D48;
  border: 1px solid rgba(244, 63, 94, 0.25);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  border-radius: var(--radius-sm);
}

/* Page Body Container */
.page-body {
  flex: 1;
  padding: 2rem;
  max-width: 1540px;
  width: 100%;
  margin: 0 auto;
}

/* Page Headers */
.page-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2rem;
  gap: 1.5rem;
}

.page-title {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ==========================================================================
   Dashboard Metrics Cards
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.02);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-xl);
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.stat-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.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-blue { background: rgba(59, 130, 246, 0.12); color: #2563EB; }
.stat-icon-emerald { background: rgba(16, 185, 129, 0.12); color: #059669; }
.stat-icon-amber { background: rgba(245, 158, 11, 0.12); color: #D97706; }
.stat-icon-rose { background: rgba(244, 63, 94, 0.12); color: #E11D48; }
.stat-icon-purple { background: rgba(139, 92, 246, 0.12); color: #7C3AED; }

.stat-value {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
}

.stat-trend-up {
  color: #059669;
  font-weight: 600;
}

.stat-trend-down {
  color: #E11D48;
  font-weight: 600;
}

.stat-desc {
  color: var(--text-dim);
}

/* ==========================================================================
   Content Grid & Cards
   ========================================================================== */
.card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  position: relative;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 6px 16px rgba(0, 0, 0, 0.02);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
}

.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .two-col-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Data Tables
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.88rem;
}

.data-table th {
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  font-weight: 600;
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.data-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
  vertical-align: middle;
}

.data-table tr:hover td {
  background: var(--bg-surface-elevated);
}

/* Badges & Tags */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.pill-success {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.pill-warning {
  background: rgba(245, 158, 11, 0.12);
  color: #D97706;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.pill-danger {
  background: rgba(244, 63, 94, 0.12);
  color: #E11D48;
  border: 1px solid rgba(244, 63, 94, 0.25);
}

.pill-info {
  background: rgba(6, 182, 212, 0.12);
  color: #0284C7;
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.dot-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Code Snippet Box */
.code-box {
  background: #0F172A;
  border: 1px solid #1E293B;
  border-radius: var(--radius-md);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #E0E7FF;
  position: relative;
  overflow-x: auto;
}

.copy-btn {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.28);
}

/* Modal Dialogs */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

[data-theme="dark"] .modal-dialog {
  background: var(--bg-surface-elevated);
  border-color: var(--border-glass);
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Form Controls */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
  background: rgba(0, 0, 0, 0.25);
  border-color: var(--border-subtle);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.35rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 150;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: #0F172A;
  border: 1px solid #334155;
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: #FFFFFF;
  animation: slide-up 0.3s ease;
}

@keyframes slide-up {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Citation & URL Badges */
.url-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.55rem;
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: #60A5FA;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.url-badge:hover {
  background: rgba(37, 99, 235, 0.22);
  border-color: #3B82F6;
  color: #93C5FD;
  text-decoration: none;
}

.stat-icon-amber {
  background: rgba(245, 158, 11, 0.15);
  color: #F59E0B;
}