/* ==========================================================================
   DOCUMENT INTELLIGENCE PLATFORM — ENTERPRISE MASTER STYLESHEET
   Design System: Slate Blue, Warm Sand & Powder Blue Intelligence Palette
   Palette:
     Primary Slate Blue:  #81A6C6 (rgb 129, 166, 198)
     Powder Blue Accent:  #AACDDC (rgb 170, 205, 220)
     Warm Sand (Main):    #F3E3D0 (rgb 243, 227, 208)
     Taupe Biscuit:       #D2C4B4 (rgb 210, 196, 180)
     Primary text:        #1C262E (Deep Slate Charcoal)
     Secondary text:      #52636F (Muted Steel Slate)
     Dark section:        #151F27 (Midnight Slate)
   ========================================================================== */

:root {
  /* Surfaces & Ambient Layers */
  --bg-main: #FAF5EE;
  --bg-secondary: #F3E3D0;
  --bg-surface: #F3E3D0;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFFFF;
  --bg-card-active: #F3E3D0;
  --bg-modal: #FFFFFF;
  --bg-input: #FFFFFF;
  --bg-header: rgba(250, 245, 238, 0.94);
  --bg-subnav: rgba(243, 227, 208, 0.94);
  --bg-dark-section: #151F27;

  /* Borders & Dividers */
  --border: #D2C4B4;
  --border-subtle: #E6DCD0;
  --border-strong: #81A6C6;
  --card-border: #D2C4B4;
  --card-border-hover: #81A6C6;
  --card-border-active: #678EAE;

  /* Accents & Tints */
  --primary-accent: #81A6C6;
  --accent-hover: #678EAE;
  --accent-secondary: #AACDDC;
  --accent-light: #AACDDC;
  --accent-tint: #F3E3D0;
  --accent-taupe: #D2C4B4;
  --accent-soft: rgba(129, 166, 198, 0.15);
  --accent-glow: rgba(129, 166, 198, 0.28);
  --accent-emerald: #3E8A68;
  --accent-emerald-soft: rgba(62, 138, 104, 0.14);
  --accent-amber: #CF8022;
  --accent-amber-soft: rgba(207, 128, 34, 0.14);
  --accent-rose: #C64A4A;
  --accent-rose-soft: rgba(198, 74, 74, 0.14);
  --accent-blue: #81A6C6;

  /* Legacy variable aliases for component compatibility */
  --bg-dark: #FAF5EE;
  --accent-cyan: #81A6C6;
  --accent-cyan-glow: rgba(129, 166, 198, 0.25);
  --accent-indigo: #678EAE;
  --accent-indigo-glow: rgba(103, 142, 174, 0.25);

  /* Typography Colors */
  --text-primary: #1C262E;
  --text-secondary: #52636F;
  --text-muted: #7E909D;
  --text-dim: #A6B7C3;
  --text-inverse: #FAF7F2;

  /* Fonts */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 3px rgba(28, 38, 46, 0.05), 0 1px 2px rgba(28, 38, 46, 0.03);
  --shadow-md: 0 4px 12px -2px rgba(28, 38, 46, 0.08), 0 2px 4px -1px rgba(28, 38, 46, 0.03);
  --shadow-lg: 0 12px 28px -4px rgba(28, 38, 46, 0.12), 0 4px 12px -2px rgba(28, 38, 46, 0.05);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 10% 10%, rgba(129, 166, 198, 0.09) 0px, transparent 55%),
    radial-gradient(at 90% 90%, rgba(243, 227, 208, 0.75) 0px, transparent 60%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  font-weight: 700;
}

p {
  color: var(--text-secondary);
}

code, pre, .json-code {
  font-family: var(--font-mono);
}

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

.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   TOP NAVIGATION BAR
   ========================================================================== */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 2rem;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-logo {
  background: var(--primary-accent);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.05rem;
  padding: 0.35rem 0.8rem;
  border-radius: 8px;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(129, 166, 198, 0.35);
}

.brand-title h1 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.stage-tag {
  font-size: 0.72rem;
  color: var(--text-secondary);
  font-weight: 500;
  display: block;
  margin-top: 2px;
  letter-spacing: 0.02em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tenant-badge {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ==========================================================================
   SUB NAVIGATION TABS
   ========================================================================== */
.sub-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1.75rem;
  background: var(--bg-subnav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  position: sticky;
  top: 59px;
  z-index: 999;
}

.nav-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 0.48rem 0.95rem;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-tab:hover:not(.disabled) {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border);
}

.nav-tab.active {
  background: var(--bg-card);
  color: var(--primary-accent);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-tab.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ==========================================================================
   MAIN CONTENT & SCREENS
   ========================================================================== */
.main-content {
  flex: 1;
  padding: 2.2rem 2rem;
  max-width: 1320px;
  margin: 0 auto;
  width: 100%;
}

.screen-view {
  display: none;
  animation: fadeIn 0.22s ease;
}

.screen-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.85rem;
  gap: 1rem;
}

.section-header h2 {
  font-size: 1.55rem;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  line-height: 1.25;
}

.section-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 780px;
}

/* ==========================================================================
   CARDS & GRIDS
   ========================================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

/* Profile & DocType Cards */
.profile-card, .doctype-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 180px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.profile-card:hover, .doctype-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary-accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.45;
}

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

/* Header Cards for Profile & DocType Editors */
.profile-header-card, .doctype-header-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.75rem;
}

.profile-title-bar, .doctype-title-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.profile-actions-bar {
  display: flex;
  gap: 0.65rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.doctype-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.doctype-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
}

.aliases-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.breadcrumb {
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--primary-accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: color 0.15s ease;
}

.breadcrumb a:hover {
  color: var(--accent-hover);
}

.version-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.version-badge-container {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
}

.version-label {
  color: var(--text-secondary);
}

.version-number {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary-accent);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.timeline-step {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  background: var(--bg-card);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.timeline-step-icon {
  background: var(--accent-emerald-soft);
  color: var(--accent-emerald);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.timeline-step-icon.failed {
  background: var(--accent-rose-soft);
  color: var(--accent-rose);
}

.timeline-step-info {
  flex: 1;
}

.timeline-step-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.timeline-step-time {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Flag Pills */
.flag-pill {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.flag-req {
  background: var(--accent-rose-soft);
  color: var(--accent-rose);
  border: 1px solid rgba(197, 48, 48, 0.25);
}

.flag-multi {
  background: var(--accent-soft);
  color: var(--primary-accent);
  border: 1px solid rgba(129, 166, 198, 0.25);
}

.badge-datatype {
  font-family: var(--font-mono);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.badge-active {
  background: var(--accent-emerald-soft);
  color: var(--accent-emerald);
  border: 1px solid rgba(46, 125, 50, 0.25);
}

.field-key-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.btn-icon {
  padding: 2px 6px;
  font-size: 0.7rem;
  line-height: 1;
}

.info-text {
  color: var(--text-secondary);
  font-size: 0.88rem;
  text-align: center;
  padding: 2rem 1rem;
}

.upload-container-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
}

/* ==========================================================================
   FORM & LABEL TYPOGRAPHY SYSTEM
   ========================================================================== */
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.35rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label,
label.form-label,
label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.45rem;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.form-group label span.required,
.required {
  color: var(--primary-accent);
  font-weight: 700;
  margin-left: 0.25rem;
}

.form-control {
  width: 100%;
  padding: 0.7rem 0.95rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: inset 0 1px 2px rgba(23, 23, 22, 0.04);
  transition: all 0.18s ease;
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.form-control:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea.form-control {
  resize: vertical;
  min-height: 85px;
  line-height: 1.5;
}

select.form-control {
  cursor: pointer;
}

.form-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.5rem;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--primary-accent);
  cursor: pointer;
}

.checkbox-group label {
  margin-bottom: 0;
  cursor: pointer;
  color: var(--text-primary);
}

/* Spacing Utilities */
.p-2 { padding: 0.65rem; }
.p-3 { padding: 1.15rem; }
.p-4 { padding: 1.65rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.85rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.3rem; }
.mt-2 { margin-top: 0.6rem; }
.mt-3 { margin-top: 0.85rem; }
.mt-4 { margin-top: 1.5rem; }
.me-1 { margin-right: 0.3rem; }
.me-2 { margin-right: 0.6rem; }
.w-100 { width: 100%; }

/* Grid Layouts */
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.85rem; }
.gap-4 { gap: 1.25rem; }

@media (max-width: 1080px) {
  .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
  .top-nav { padding: 0.75rem 1rem; }
  .main-content { padding: 1.2rem 1rem; }
}

/* ==========================================================================
   KPI METRIC STAT CARDS
   ========================================================================== */
.stat-label {
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}

/* ==========================================================================
   12-STEP PRODUCT WORKFLOW LAUNCHERS
   ========================================================================== */
.quick-start-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
}

.quick-start-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.quick-start-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-accent);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.quick-start-card:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  border-color: var(--primary-accent);
  box-shadow: var(--shadow-md);
}

.quick-start-card:hover::before {
  opacity: 1;
}

.quick-start-card .step-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--primary-accent);
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}

.quick-start-card h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin: 0 0 0.35rem 0;
}

.quick-start-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: var(--font-heading);
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.16s ease;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  border-radius: 6px;
}

.btn-lg {
  padding: 0.75rem 1.65rem;
  font-size: 0.98rem;
  border-radius: 10px;
}

.btn-primary {
  background: var(--primary-accent);
  color: #FFFFFF;
  border-color: var(--primary-accent);
  box-shadow: 0 2px 8px rgba(129, 166, 198, 0.25);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(129, 166, 198, 0.35);
}

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

.btn-secondary:hover {
  background: #E8D7C2;
  border-color: var(--border-strong);
}

.btn-success {
  background: var(--accent-emerald);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.25);
}

.btn-success:hover {
  background: #1B5E20;
}

.btn-danger {
  background: var(--accent-rose);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(197, 48, 48, 0.25);
}

.btn-danger:hover {
  background: #9B2C2C;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   DATA TABLES
   ========================================================================== */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.fields-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.fields-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.88rem 1.15rem;
  border-bottom: 1px solid var(--border);
}

.fields-table td {
  padding: 0.88rem 1.15rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.87rem;
  color: var(--text-primary);
  vertical-align: middle;
}

.fields-table tbody tr {
  transition: background 0.12s ease;
}

.fields-table tbody tr:hover {
  background: var(--bg-secondary);
}

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

.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }

/* ==========================================================================
   STATUS BADGES & MICRO-PILLS
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.22rem 0.65rem;
  border-radius: 20px;
  border: 1px solid transparent;
}

.badge-published, .badge-approved {
  background: var(--accent-emerald-soft);
  color: var(--accent-emerald);
  border-color: rgba(46, 125, 50, 0.25);
}

.badge-draft, .badge-review, .badge-needs_review {
  background: var(--accent-soft);
  color: var(--primary-accent);
  border-color: rgba(129, 166, 198, 0.3);
}

.badge-disabled, .badge-failed {
  background: var(--accent-rose-soft);
  color: var(--accent-rose);
  border-color: rgba(197, 48, 48, 0.25);
}

.alias-badge {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 12px;
}

.key-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--primary-accent);
  border: 1px solid var(--border);
}

/* ==========================================================================
   DROPZONE & INGESTION
   ========================================================================== */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: 12px;
  padding: 3.5rem 2rem;
  text-align: center;
  background: var(--bg-card);
  cursor: pointer;
  transition: all 0.2s ease;
}

.dropzone:hover, .dropzone.drag-over {
  border-color: var(--primary-accent);
  background: var(--accent-soft);
}

.dropzone-icon {
  font-size: 3.2rem;
  margin-bottom: 0.85rem;
}

.dropzone-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.dropzone-subtitle {
  font-size: 0.92rem;
  color: var(--primary-accent);
  margin-bottom: 0.75rem;
}

.dropzone-formats {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Selected Files Queue */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.85rem;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.file-item-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.file-icon {
  font-size: 1.5rem;
}

.file-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.file-size {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   AI CHAT ASSISTANT
   ========================================================================== */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 620px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.chat-messages {
  flex: 1;
  padding: 1.65rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--bg-main);
}

.chat-bubble {
  max-width: 82%;
  padding: 1rem 1.35rem;
  border-radius: 12px;
  font-size: 0.92rem;
  line-height: 1.55;
  box-shadow: var(--shadow-sm);
}

.chat-bubble.user {
  align-self: flex-end;
  background: var(--primary-accent);
  color: #FFFFFF;
  border-bottom-right-radius: 2px;
}

.chat-bubble.assistant {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-bottom-left-radius: 2px;
}

.chat-bubble .query-plan-tag {
  display: inline-block;
  font-size: 0.72rem;
  background: var(--accent-soft);
  color: var(--primary-accent);
  border: 1px solid rgba(129, 166, 198, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 0.45rem;
  font-weight: 700;
  text-transform: uppercase;
}

.chat-suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem 1.65rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.suggestion-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.82rem;
  padding: 0.4rem 0.88rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.16s ease;
}

.suggestion-chip:hover {
  background: var(--primary-accent);
  border-color: var(--primary-accent);
  color: #FFFFFF;
}

.chat-input-bar {
  display: flex;
  gap: 0.85rem;
  padding: 1.1rem 1.65rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   MODALS & OVERLAYS
   ========================================================================== */
.modal-overlay,
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(23, 23, 22, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  overflow-y: auto;
  padding: 2.5rem 1.25rem;
  box-sizing: border-box;
}

.modal-overlay.active,
.modal-backdrop.active {
  display: flex !important;
  align-items: flex-start;
  justify-content: center;
}

.modal-card,
.modal-dialog {
  background: var(--bg-modal);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalFadeIn 0.2s ease;
}

.modal-card.modal-large,
.modal-dialog.modal-large {
  max-width: 1050px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  transition: all 0.15s ease;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--border-subtle);
}

.modal-body {
  padding: 1.75rem;
  max-height: calc(85vh - 140px);
  overflow-y: auto;
  color: var(--text-primary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.75rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.98) translateY(-6px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ==========================================================================
   FIELD PROVENANCE & DARK SECTION UTILITIES (NEAR BLACK #1C1C1A)
   ========================================================================== */
.provenance-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}

.evidence-box,
.dark-section,
.json-viewer,
.raw-ocr-box {
  background: var(--bg-dark-section);
  color: var(--text-inverse);
  border: 1px solid #2C2C28;
  padding: 0.85rem 1.15rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  line-height: 1.6;
}

.evidence-box code,
.dark-section code {
  color: #E6E4DF;
}

/* Loading Spinner */
.spinner {
  border: 2px solid var(--border);
  border-top-color: var(--primary-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  background: var(--bg-card);
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

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

/* ==========================================================================
   ENTERPRISE TOAST NOTIFICATION SYSTEM
   ========================================================================== */
#toastContainer {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 100000;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  max-width: 420px;
  width: calc(100% - 2.5rem);
  pointer-events: none;
}

.toast-item {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.95rem 1.15rem;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  animation: toastSlideIn 0.22s ease forwards;
  transition: all 0.2s ease;
}

.toast-item.toast-success {
  border-left: 4px solid var(--accent-emerald);
  background: var(--bg-card);
}

.toast-item.toast-error {
  border-left: 4px solid var(--accent-rose);
  background: var(--bg-card);
}

.toast-item.toast-info {
  border-left: 4px solid var(--primary-accent);
  background: var(--bg-card);
}

.toast-item.toast-warning {
  border-left: 4px solid var(--accent-amber);
  background: var(--bg-card);
}

.toast-icon {
  font-size: 1.15rem;
  line-height: 1.2;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 0.2rem;
  color: var(--text-primary);
}

.toast-message {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.1rem;
  transition: color 0.15s;
}

.toast-close:hover {
  color: var(--text-primary);
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(30px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}