/* ==========================================================================
   US Plumbing Invoice Checker - Stylesheet
   Modern Slate/Navy Financial & Accounting Visual Language
   ========================================================================== */

:root {
  /* Primary Slate / Navy Palette */
  --color-navy-950: #0a0f1d;
  --color-navy-900: #0f172a;
  --color-navy-800: #1e293b;
  --color-navy-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  --color-slate-400: #94a3b8;
  --color-slate-300: #cbd5e1;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-slate-50:  #f8fafc;
  --color-white:     #ffffff;

  /* Accent & Interactive Colors */
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-light: #eff6ff;

  /* Status Semantics */
  /* Green - Exact Matches */
  --color-success-bg: #ecfdf5;
  --color-success-border: #a7f3d0;
  --color-success-text: #065f46;
  --color-success-badge-bg: #d1fae5;
  --color-success-badge-text: #065f46;

  /* Red - Discrepancies & Mismatches */
  --color-danger-bg: #fef2f2;
  --color-danger-border: #fecaca;
  --color-danger-text: #991b1b;
  --color-danger-badge-bg: #fee2e2;
  --color-danger-badge-text: #991b1b;

  /* Amber / Orange - Cross-Match & Shift Suspects */
  --color-warning-bg: #fffbeb;
  --color-warning-border: #fde68a;
  --color-warning-text: #92400e;
  --color-warning-badge-bg: #fef3c7;
  --color-warning-badge-text: #92400e;
  --color-shift-bg: #fff7ed;
  --color-shift-border: #fed7aa;
  --color-shift-text: #9a3412;
  --color-shift-badge-bg: #ffedd5;
  --color-shift-badge-text: #c2410c;

  /* Slate - Missing / Unrecognized */
  --color-neutral-bg: #f8fafc;
  --color-neutral-border: #cbd5e1;
  --color-neutral-text: #334155;
  --color-neutral-badge-bg: #e2e8f0;
  --color-neutral-badge-text: #334155;

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.09), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.06);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-navy-800);
  background-color: #f1f5f9;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

/* Screen reader utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Utilities */
.hidden {
  display: none !important;
}

.text-right {
  text-align: right;
}

.text-success {
  color: #15803d !important;
}

.text-danger {
  color: #b91c1c !important;
}

.text-warning {
  color: #c2410c !important;
}

.text-slate {
  color: #475569 !important;
}

/* ==========================================================================
   Header Section
   ========================================================================== */
.app-header {
  background-color: var(--color-navy-900);
  color: var(--color-white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.85rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Required Logo Container with exact comment preserved in markup */
.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background-color: var(--color-white);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-logo-img {
  height: 42px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
  display: block;
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #f8fafc;
  line-height: 1.2;
}

.app-subtitle {
  font-size: 0.82rem;
  color: #94a3b8;
  font-weight: 400;
}

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

.privacy-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(30, 41, 59, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  color: #cbd5e1;
  font-weight: 500;
}

.icon-lock {
  color: #38bdf8;
}

.env-badge {
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #93c5fd;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-content {
  flex: 1;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ==========================================================================
   Toolbar & Presets
   ========================================================================== */
.toolbar-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--color-white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-slate-200);
  box-shadow: var(--shadow-sm);
}

.toolbar-left,
.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.toolbar-instructions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-slate-600);
}

.toolbar-info-icon {
  color: var(--color-primary-600);
  flex-shrink: 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-600);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary-600);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-700);
  box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary-800);
  transform: translateY(1px);
}

.btn-secondary {
  background-color: var(--color-slate-100);
  color: var(--color-navy-800);
  border-color: var(--color-slate-300);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-slate-200);
  color: var(--color-navy-900);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-slate-600);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-slate-100);
  color: var(--color-navy-900);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-large {
  font-size: 1.05rem;
  padding: 0.85rem 2.25rem;
  border-radius: var(--radius-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
}

.btn-icon-subtle {
  background: transparent;
  border: none;
  color: var(--color-slate-400);
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.btn-icon-subtle:hover {
  color: var(--color-danger-text);
  background-color: var(--color-slate-100);
}

/* ==========================================================================
   Input Section (Dual Panels)
   ========================================================================== */
.input-grid-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.input-card {
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-card:focus-within {
  border-color: var(--color-slate-400);
  box-shadow: var(--shadow-md);
}

.card-header {
  background-color: var(--color-slate-50);
  border-bottom: 1px solid var(--color-slate-200);
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.card-header-titles {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.title-with-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.source-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.indicator-our {
  background-color: #0284c7;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
}

.indicator-atmos {
  background-color: #d97706;
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.2);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy-900);
  line-height: 1.2;
}

.card-desc {
  font-size: 0.8rem;
  color: var(--color-slate-500);
}

.card-header-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.meta-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background-color: var(--color-slate-200);
  color: var(--color-slate-600);
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.card-body {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.textarea-wrapper {
  position: relative;
  flex: 1;
}

.invoice-textarea {
  width: 100%;
  min-height: 190px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--color-navy-900);
  background-color: #fdfefe;
  border: 1px solid var(--color-slate-300);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  resize: vertical;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  word-break: break-all;
}

.invoice-textarea:focus {
  outline: none;
  border-color: var(--color-primary-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background-color: var(--color-white);
}

.invoice-textarea::placeholder {
  color: var(--color-slate-400);
  font-style: italic;
}

.format-spec-hint {
  background-color: var(--color-slate-50);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  font-size: 0.72rem;
  color: var(--color-slate-600);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  overflow-x: auto;
}

.hint-label {
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-slate-500);
  font-size: 0.65rem;
}

.format-spec-hint code {
  font-family: var(--font-mono);
  color: var(--color-navy-800);
}

/* ==========================================================================
   Primary Action Container
   ========================================================================== */
.compare-action-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0.25rem 0;
}

.compare-subtext {
  font-size: 0.82rem;
  color: var(--color-slate-500);
  font-weight: 500;
}

/* ==========================================================================
   Status Banner & Parsing Details
   ========================================================================== */
.status-banner {
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  animation: fadeIn 200ms ease-out;
}

.status-banner.success {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-text);
}

.status-banner.warning {
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
}

.status-banner.error {
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger-text);
}

.parsing-details-section {
  animation: fadeIn 200ms ease-out;
}

.details-accordion {
  background: var(--color-white);
  border: 1px solid var(--color-slate-300);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-summary {
  padding: 0.75rem 1.25rem;
  background-color: var(--color-slate-50);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-navy-800);
  user-select: none;
}

.accordion-summary:hover {
  background-color: var(--color-slate-100);
}

.summary-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.summary-icon {
  color: var(--color-primary-600);
  font-weight: bold;
}

.summary-badge {
  background-color: var(--color-warning-badge-bg);
  color: var(--color-warning-badge-text);
  font-size: 0.72rem;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.accordion-arrow {
  color: var(--color-slate-400);
  transition: transform var(--transition-fast);
}

details[open] .accordion-arrow {
  transform: rotate(180deg);
}

.accordion-content {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-slate-200);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.82rem;
}

.warning-item {
  background-color: var(--color-warning-bg);
  border-left: 3px solid #f59e0b;
  padding: 0.6rem 0.8rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.warning-item-header {
  font-weight: 700;
  color: #92400e;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.warning-raw-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: rgba(0, 0, 0, 0.05);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-navy-900);
  word-break: break-all;
}

/* ==========================================================================
   Dashboard KPI Section
   ========================================================================== */
.dashboard-kpi-section {
  animation: fadeIn 250ms ease-out;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.kpi-card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.4rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-slate-500);
}

.kpi-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kpi-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-navy-900);
}

.kpi-footer {
  font-size: 0.75rem;
  color: var(--color-slate-500);
}

/* Specific KPI borders */
.kpi-neutral {
  border-top: 4px solid var(--color-navy-700);
}

.kpi-success {
  border-top: 4px solid #16a34a;
}

.kpi-danger {
  border-top: 4px solid #dc2626;
}

.kpi-warning {
  border-top: 4px solid #ea580c;
}

.kpi-slate {
  border-top: 4px solid #64748b;
}

/* ==========================================================================
   Results Section
   ========================================================================== */
.results-card {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.results-header {
  padding: 1rem 1.5rem;
  background-color: var(--color-slate-50);
  border-bottom: 1px solid var(--color-slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.results-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.results-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy-900);
}

.results-badge {
  background-color: var(--color-slate-200);
  color: var(--color-slate-700);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.results-controls-bar {
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--color-slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--color-white);
}

.filter-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-slate-600);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  background-color: var(--color-slate-100);
  color: var(--color-navy-900);
}

.tab-btn.active {
  background-color: var(--color-navy-800);
  color: var(--color-white);
  border-color: var(--color-navy-800);
}

.tab-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background-color: rgba(0, 0, 0, 0.08);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
}

.tab-btn.active .tab-count {
  background-color: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
}

.search-box-wrapper {
  min-width: 280px;
  flex: 1;
  max-width: 380px;
}

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

.search-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--color-slate-400);
  pointer-events: none;
}

.search-input {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  padding: 0.5rem 2rem 0.5rem 2.2rem;
  border: 1px solid var(--color-slate-300);
  border-radius: var(--radius-md);
  color: var(--color-navy-900);
  background-color: var(--color-slate-50);
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  outline: none;
  background-color: var(--color-white);
  border-color: var(--color-primary-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-clear-search {
  position: absolute;
  right: 0.5rem;
  background: transparent;
  border: none;
  color: var(--color-slate-400);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.1rem 0.3rem;
  border-radius: var(--radius-sm);
}

.btn-clear-search:hover {
  color: var(--color-navy-800);
}

/* ==========================================================================
   Table & Results Display
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.results-table th {
  background-color: var(--color-slate-100);
  color: var(--color-slate-700);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--color-slate-200);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 10;
}

.results-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-slate-200);
  vertical-align: middle;
}

.results-table tr:hover td {
  background-color: #f8fafc;
}

/* Table Column Widths & Alignments */
.col-status {
  width: 175px;
}

.col-invoice {
  width: 110px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-navy-900);
}

.col-date {
  width: 110px;
  font-family: var(--font-mono);
  color: var(--color-slate-600);
}

.col-amount {
  width: 125px;
  font-family: var(--font-mono);
  font-weight: 600;
}

.col-diff {
  width: 125px;
  font-family: var(--font-mono);
  font-weight: 700;
}

.col-desc {
  max-width: 250px;
}

.col-notes {
  min-width: 220px;
}

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.badge-exact {
  background-color: var(--color-success-badge-bg);
  color: var(--color-success-badge-text);
  border: 1px solid var(--color-success-border);
}

.badge-mismatch {
  background-color: var(--color-danger-badge-bg);
  color: var(--color-danger-badge-text);
  border: 1px solid var(--color-danger-border);
}

.badge-cross-match {
  background-color: var(--color-shift-badge-bg);
  color: var(--color-shift-badge-text);
  border: 1px solid var(--color-shift-border);
}

.badge-missing-atmos {
  background-color: var(--color-warning-badge-bg);
  color: var(--color-warning-badge-text);
  border: 1px solid var(--color-warning-border);
}

.badge-unrecognized-atmos {
  background-color: var(--color-neutral-badge-bg);
  color: var(--color-neutral-badge-text);
  border: 1px solid var(--color-neutral-border);
}

/* Difference styling */
.diff-zero {
  color: var(--color-slate-500);
}

.diff-positive {
  color: #b91c1c;
}

.diff-negative {
  color: #2563eb;
}

/* Description styling */
.desc-text {
  font-size: 0.8rem;
  color: var(--color-slate-600);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.desc-empty {
  color: var(--color-slate-400);
  font-style: italic;
}

/* Notes & Shift Highlight */
.shift-note-badge {
  display: inline-flex;
  flex-direction: column;
  gap: 0.15rem;
  background-color: #fff7ed;
  border: 1px solid #fed7aa;
  padding: 0.35rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: #9a3412;
}

.shift-note-header {
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.shift-note-details {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #c2410c;
}

/* Duplicate indicator */
.duplicate-tag {
  display: inline-block;
  background-color: #fef08a;
  color: #854d0e;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius-sm);
  margin-left: 0.35rem;
}

/* Empty State */
.empty-state {
  padding: 4rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
}

.empty-state-icon {
  color: var(--color-slate-400);
  font-size: 3rem;
  line-height: 1;
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy-900);
}

.empty-state-desc {
  font-size: 0.9rem;
  color: var(--color-slate-500);
  max-width: 520px;
  line-height: 1.5;
}

.results-footer {
  padding: 0.85rem 1.5rem;
  background-color: var(--color-slate-50);
  border-top: 1px solid var(--color-slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--color-slate-600);
}

/* ==========================================================================
   App Footer
   ========================================================================== */
.app-footer {
  margin-top: auto;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-slate-200);
  padding: 1.5rem;
  font-size: 0.8rem;
  color: var(--color-slate-500);
}

.footer-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-align: center;
}

.footer-brand {
  color: var(--color-navy-800);
}

.footer-privacy {
  color: var(--color-slate-600);
}

.footer-tech a {
  color: var(--color-primary-600);
  text-decoration: none;
}

.footer-tech a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 100;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background-color: var(--color-navy-900);
  color: var(--color-white);
  padding: 0.75rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: slideInUp 200ms cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 380px;
}

.toast-success {
  border-left: 4px solid #22c55e;
}

.toast-info {
  border-left: 4px solid #3b82f6;
}

.toast-warning {
  border-left: 4px solid #f59e0b;
}

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

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1080px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .input-grid-section {
    grid-template-columns: 1fr;
  }

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

  .header-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .results-header,
  .results-controls-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-box-wrapper {
    max-width: 100%;
    width: 100%;
  }

  .toolbar-section {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar-left,
  .toolbar-right {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 480px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .btn-large {
    width: 100%;
  }
}