/* ─────────────────────────────────────────────────────────────────────────
   DESIGN SYSTEM & CSS VARIABLES
   ───────────────────────────────────────────────────────────────────────── */
:root {
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Inter', system-ui, sans-serif;
  
  /* Minimal Light Mode Palette */
  --bg-app: #fcfcfc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f3f4f6;
  --border-color: #e5e7eb;
  
  --text-main: #111827;
  --text-muted: #6b7280;
  --text-on-accent: #ffffff;
  
  --accent-primary: #111827; /* Minimal solid black/dark gray */
  --accent-hover: #374151;
  --accent-active: #000000;
  --accent-soft: #f3f4f6;
  
  --color-success: #10b981;
  --color-success-hover: #059669;
  --color-success-soft: #ecfdf5;
  
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-danger-soft: #fef2f2;
  
  --color-warning: #f59e0b;
  --color-warning-hover: #d97706;
  
  --card-shadow: 0 1px 3px rgba(0,0,0,0.04);
  --card-shadow-lg: 0 4px 6px -1px rgba(0,0,0,0.05);
  --card-shadow-hover: 0 10px 15px -3px rgba(0,0,0,0.05);
  --transition-speed: 0.15s;
}

[data-theme="dark"] {
  /* Minimal Dark Mode Palette */
  --bg-app: #111111;
  --bg-surface: #18181b;
  --bg-surface-alt: #27272a;
  --border-color: #3f3f46;

  
  --text-main: #fafafa;
  --text-muted: #a1a1aa;
  
  --accent-primary: #ffffff; /* White buttons in dark mode */
  --accent-hover: #e4e4e7;
  --accent-active: #d4d4d8;
  --accent-soft: #27272a;
  
  --color-success: #34d399;
  --color-success-hover: #10b981;
  --color-success-soft: rgba(16, 185, 129, 0.1);
  
  --color-danger: #f87171;
  --color-danger-hover: #ef4444;
  --color-danger-soft: rgba(239, 68, 68, 0.1);
  
  --color-warning: #fbbf24;
  --color-warning-hover: #f59e0b;
  
  --card-shadow: 0 1px 3px rgba(0,0,0,0.3);
  --card-shadow-lg: 0 4px 6px -1px rgba(0,0,0,0.4);
  --card-shadow-hover: 0 10px 15px -3px rgba(0,0,0,0.5);
}

/* ─────────────────────────────────────────────────────────────────────────
   BASE RESETS & STYLING
   ───────────────────────────────────────────────────────────────────────── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 14px;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
[data-theme="dark"] body {
  background-image: none;
}
input, select, textarea, button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-speed);
}
a:hover {
  color: var(--accent-hover);
}
h1, h2, h3, h4, h5, h6, .totals-val, .header-logo {
  font-family: var(--font-heading);
}

/* ─────────────────────────────────────────────────────────────────────────
   LAYOUT STYLING
   ───────────────────────────────────────────────────────────────────────── */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 100%;
  margin: 0 auto;
  padding: 16px 3vw;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  margin-bottom: 24px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.3px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: background var(--transition-speed);
}
.theme-toggle-btn:hover {
  background: var(--bg-surface-alt);
  color: var(--text-main);
}

/* ─────────────────────────────────────────────────────────────────────────
   TAB NAVIGATOR
   ───────────────────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: 4px;
  background: transparent;
  padding: 0;
  border-radius: 0;
  margin-bottom: 24px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  border: none;
  border-bottom: 1px solid var(--border-color);
  justify-content: center;
  white-space: nowrap;
}
.tab-bar::-webkit-scrollbar {
  display: none;
}
.tab-btn {
  padding: 10px 16px;
  border: none;
  outline: none;
  background: transparent;
  border-radius: 0;
  cursor: pointer;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition-speed);
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface-alt);
}
[data-theme="dark"] .tab-btn:hover {
  background: var(--bg-surface-alt);
}
.tab-btn.active {
  background: transparent;
  color: var(--text-main);
  font-weight: 600;
  box-shadow: none;
  border-bottom: 2px solid var(--text-main);
}

/* ─────────────────────────────────────────────────────────────────────────
   TAB PANELS
   ───────────────────────────────────────────────────────────────────────── */
.tab-panel {
  display: none;
  animation: fadeIn var(--transition-speed) ease-in-out;
}
.tab-panel.active {
  display: block;
}

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

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 20px;
  box-shadow: var(--card-shadow);
  margin-bottom: 20px;
  transition: box-shadow var(--transition-speed);
}
.card:hover {
  box-shadow: var(--card-shadow-lg);
}
.card-header-gradient {
  background: transparent;
  padding: 0 0 16px 0;
  border-radius: 0;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.card-header-gradient h2 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

/* ─────────────────────────────────────────────────────────────────────────
   FORM ELEMENTS
   ───────────────────────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
}
@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}
.form-group label {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
}
.form-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

input[type="text"], input[type="number"], input[type="password"], textarea, select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-surface);
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-speed);
  font-family: var(--font-family);
  font-size: 14px;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--text-muted);
}
textarea {
  resize: vertical;
}

/* ─────────────────────────────────────────────────────────────────────────
   TABLES
   ───────────────────────────────────────────────────────────────────────── */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 16px;
  background: var(--bg-surface);
}
table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
th {
  background-color: var(--bg-surface-alt);
  color: var(--text-muted);
  padding: 10px 12px;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--border-color);
}
td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}
tr:last-child td {
  border-bottom: none;
}
tr:nth-child(even) td {
  background-color: rgba(0,0,0,0.01);
}
[data-theme="dark"] tr:nth-child(even) td {
  background-color: rgba(255,255,255,0.01);
}

/* ─────────────────────────────────────────────────────────────────────────
   BUTTONS
   ───────────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 13px;
  font-family: var(--font-family);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-speed);
  white-space: nowrap;
}
.btn:hover {
  opacity: 0.9;
}
.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--text-on-accent);
}
[data-theme="dark"] .btn-primary {
  color: #000;
}

.btn-success {
  background: var(--color-success);
  color: white;
}

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

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--bg-surface-alt);
}
[data-theme="dark"] .btn-secondary:hover {
  background-color: var(--bg-surface-alt);
}

.btn-icon-only {
  padding: 6px;
  border-radius: 6px;
}

.btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ─────────────────────────────────────────────────────────────────────────
   TOTALS BAR
   ───────────────────────────────────────────────────────────────────────── */
.totals-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding: 16px 0;
  margin-bottom: 16px;
  background-color: transparent;
  gap: 16px;
}
.totals-title {
  font-weight: 500;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.totals-val {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
}
.totals-words {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  text-align: right;
  flex: 1;
}

/* ─────────────────────────────────────────────────────────────────────────
   CREDITS & FOOTER
   ───────────────────────────────────────────────────────────────────────── */
footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-top: auto;
  font-size: 11px;
  color: var(--text-muted);
}

/* ─────────────────────────────────────────────────────────────────────────
   PASSWORD LOCK MODAL
   ───────────────────────────────────────────────────────────────────────── */
.lock-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #0f172a;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.lock-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.5);
  color: white;
  text-align: center;
}
.lock-title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.lock-desc {
  font-size: 12px;
  color: #94a3b8;
  margin-bottom: 20px;
}
.lock-input {
  background: #0f172a !important;
  border: 1px solid #334155 !important;
  color: white !important;
  text-align: center;
  font-size: 16px !important;
  letter-spacing: 4px;
  margin-bottom: 16px;
  height: 44px;
}

/* ─────────────────────────────────────────────────────────────────────────
   SETTINGS GRID
   ───────────────────────────────────────────────────────────────────────── */
.settings-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
}
@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr;
  }
}
.logo-uploader-box {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  background: var(--bg-app);
  cursor: pointer;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: border-color var(--transition-speed);
}
.logo-uploader-box:hover {
  border-color: var(--accent-primary);
}
.logo-preview-img {
  max-height: 70px;
  max-width: 100%;
  object-fit: contain;
  border-radius: 4px;
}
.logo-placeholder-txt {
  font-size: 11px;
  color: var(--text-muted);
}

/* Rich text editor mini-toolbar */
.rich-toolbar {
  display: flex;
  gap: 4px;
  background: var(--bg-surface-alt);
  padding: 4px;
  border-radius: 6px 6px 0 0;
  border: 1px solid var(--border-color);
  border-bottom: none;
}
.rich-btn {
  padding: 2px 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  border-radius: 4px;
  cursor: pointer;
  font-weight: 700;
  font-size: 11px;
}
.rich-btn:hover {
  background: var(--bg-surface-alt);
}
.rich-textarea {
  border-top-left-radius: 0 !important;
  border-top-right-radius: 0 !important;
  min-height: 90px;
}

.badge-status {
  display: inline-block;
  font-size: 9px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.badge-paid {
  background-color: var(--color-success-soft);
  color: var(--color-success);
}
.badge-due {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

/* ─────────────────────────────────────────────────────────────────────────
   MICRO-ACTION BUTTONS (INLINE ROW LEVEL Actions)
   ───────────────────────────────────────────────────────────────────────── */
.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  font-size: 13px;
  line-height: 1;
}
.action-btn:hover {
  transform: translateY(-1px) scale(1.08);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}
.action-btn:active {
  transform: translateY(0) scale(0.95);
}
.action-btn-edit {
  background-color: var(--accent-soft);
  color: var(--accent-primary);
  border-color: rgba(99, 102, 241, 0.1);
}
.action-btn-edit:hover {
  background-color: var(--accent-primary);
  color: white;
}
.action-btn-success {
  background-color: var(--color-success-soft);
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.1);
}
.action-btn-success:hover {
  background-color: var(--color-success);
  color: white;
}
.action-btn-warning {
  background-color: rgba(217, 119, 6, 0.1);
  color: var(--color-warning);
  border-color: rgba(217, 119, 6, 0.15);
}
.action-btn-warning:hover {
  background-color: var(--color-warning);
  color: white;
}
.action-btn-danger {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.1);
}
.action-btn-danger:hover {
  background-color: var(--color-danger);
  color: white;
}

/* Custom alignment overrides */
.table-actions-cell {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  height: 100%;
}

/* ─────────────────────────────────────────────────────────────────────────
   PRINT PREVIEW WINDOW (HIDDEN ON WEB UI)
   ───────────────────────────────────────────────────────────────────────── */
#print-sheet-area {
  display: none;
}

/* ─────────────────────────────────────────────────────────────────────────
   PRINT STYLES (@media print)
   ───────────────────────────────────────────────────────────────────────── */
@media print {
  @page {
    size: A4 portrait;
    margin: 0;
  }

  /* Hide regular Web UI */
  .app-container, header, footer, .tab-bar, .tab-panel, .totals-bar, .btn-group, button, input, select, textarea, .rich-toolbar {
    display: none !important;
  }
  
  body {
    background-color: #ffffff !important;
    color: #000000 !important;
    font-size: 9pt !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  #print-sheet-area {
    display: block !important;
    width: 100% !important;
  }

  /* Base layout for printable page */
  .print-page {
    background: #ffffff !important;
    box-sizing: border-box !important;
    display: flex;
    flex-direction: column;
    position: relative;
    font-family: var(--font-family);
  }

  /* Half-A4 Portrait Invoice Page Layout (Occupies top-half of A4 sheet) */
  .print-invoice-a5 {
    width: 210mm !important;
    height: 148.5mm !important; /* Exactly half of vertical A4 portrait height */
    padding: 8mm 12mm !important;
    overflow: hidden !important;
    font-size: 8.5pt !important;
    box-sizing: border-box !important;
  }

  /* Adjustments for compact half-A4 Invoice size */
  .print-invoice-a5 .print-header {
    padding-bottom: 6px !important;
    margin-bottom: 10px !important;
    border-bottom: 1.5px solid #000000 !important;
  }
  .print-invoice-a5 .print-company-info img {
    max-height: 36px !important;
  }
  .print-invoice-a5 .print-doc-title {
    font-size: 18pt !important;
  }
  .print-invoice-a5 .print-doc-badge {
    font-size: 8pt !important;
    padding: 1px 8px !important;
    margin-top: 4px !important;
  }
  .print-invoice-a5 .print-meta-text {
    font-size: 8pt !important;
    margin-top: 6px !important;
  }
  .print-invoice-a5 .print-bill-to {
    padding-bottom: 6px !important;
    margin-bottom: 10px !important;
    border-bottom: 1px solid #000000 !important;
  }
  .print-invoice-a5 .print-section-lbl {
    font-size: 7pt !important;
    margin-bottom: 2px !important;
  }
  .print-invoice-a5 .print-bill-to-val {
    font-size: 9pt !important;
  }
  .print-invoice-a5 .print-table {
    margin-bottom: 8px !important;
  }
  .print-invoice-a5 .print-table th {
    padding: 4px 6px !important;
    font-size: 8pt !important;
    border-bottom: 1.5px solid #000000 !important;
  }
  .print-invoice-a5 .print-table td {
    padding: 5px 6px !important;
    font-size: 9pt !important;
  }
  .print-invoice-a5 .print-totals-box {
    padding-top: 6px !important;
    margin-top: auto !important; /* Pushes to bottom of card before signature */
  }
  .print-invoice-a5 .print-calc-block {
    width: 260px !important;
  }
  .print-invoice-a5 .print-calc-row {
    font-size: 8.5pt !important;
    margin-bottom: 2px !important;
  }
  .print-invoice-a5 .print-grand-row {
    font-size: 11pt !important;
    padding-top: 4px !important;
    margin-top: 4px !important;
    border-top: 1px solid #000000 !important;
  }
  .print-invoice-a5 .print-paid-stamp {
    font-size: 16pt !important;
    padding: 4px 12px !important;
    top: 90px !important;
    right: 30px !important;
    border-width: 2px !important;
  }
  .print-invoice-a5 .print-footer {
    margin-top: 10px !important;
    padding-top: 6px !important;
    font-size: 7.5pt !important;
    border-top: 1px solid #000000 !important;
  }

  /* Full A4 Vertical Report Statement Page Layout */
  .print-report-a4 {
    width: 100% !important;
    min-height: 100% !important;
    padding: 10mm 15mm !important;
    font-size: 9.5pt !important;
    box-sizing: border-box !important;
  }
  .print-report-a4 .print-table th {
    padding: 8px 6px !important;
    font-size: 8.5pt !important;
  }
  .print-report-a4 .print-table td {
    padding: 10px 8px !important;
    font-size: 9.5pt !important;
  }
  .print-report-a4 .print-footer {
    margin-top: 30px !important;
    font-size: 8pt !important;
  }


  /* Premium invoice headers */
  .print-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid #000000;
    padding-bottom: 12px;
    margin-bottom: 16px;
    gap: 16px;
  }
  .print-company-info {
    flex: 1;
    font-size: 9.5pt;
    line-height: 1.5;
    color: #000000;
  }
  .print-company-info img {
    max-height: 50px;
    object-fit: contain;
    display: block;
    margin-bottom: 6px;
  }
  .print-company-info {
    font-size: 9.5pt;
    line-height: 1.5;
    color: #000000;
  }
  .print-title-block {
    text-align: right;
    flex-shrink: 0;
    margin-top: 10px;
  }
  .print-doc-title {
    font-size: 24pt;
    font-weight: 800;
    color: #000000;
    letter-spacing: 1px;
    line-height: 1;
    text-transform: uppercase;
  }
  .print-doc-badge {
    display: inline-block;
    border: 1.5px solid #000000;
    font-size: 8.5pt;
    font-weight: 800;
    padding: 2px 10px;
    border-radius: 4px;
    margin-top: 6px;
  }
  .print-meta-text {
    font-size: 8.5pt;
    margin-top: 10px;
    line-height: 1.4;
  }

  .print-bill-to {
    border-bottom: 1.5px solid #000000;
    padding-bottom: 12px;
    margin-bottom: 16px;
    text-align: center;
  }
  .print-section-lbl {
    font-size: 7.5pt;
    font-weight: 800;
    color: #555555;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
    display: block;
  }
  .print-bill-to-val {
    font-size: 10pt;
    font-weight: 400;
    line-height: 1.5;
  }

  /* Print item table formatting */
  .print-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
  }
  .print-table th {
    background-color: transparent !important;
    border-bottom: 2px solid #000000 !important;
    color: #000000 !important;
    padding: 8px 6px !important;
    font-size: 8pt !important;
    font-weight: 800 !important;
  }
  .print-table td {
    padding: 10px 8px !important;
    border-bottom: 1px solid #dddddd !important;
    font-size: 9.5pt !important;
    color: #000000 !important;
  }
  .print-table tbody tr:last-child td {
    border-bottom: none !important;
  }

  /* Print totals section */
  .print-totals-box {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: 12px;
    margin-top: auto; /* Push signature/totals to bottom of sheet */
  }
  .print-words-block {
    flex: 1;
    padding-right: 20px;
  }
  .print-words-title {
    font-size: 7.5pt;
    font-weight: 800;
    text-transform: uppercase;
    color: #555555;
  }
  .print-words-val {
    font-size: 9.5pt;
    font-style: italic;
    margin-top: 2px;
  }
  .print-calc-block {
    width: 320px;
    text-align: right;
  }
  .print-calc-row {
    display: flex;
    justify-content: space-between;
    font-size: 9pt;
    margin-bottom: 4px;
  }
  .print-grand-row {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #000000;
    padding-top: 6px;
    margin-top: 6px;
    font-weight: 900;
    font-size: 13pt;
  }

  /* Paid Stamp */
  .print-paid-stamp {
    position: absolute;
    right: 40px;
    top: 120px;
    border: 3px solid #059669;
    color: #059669;
    font-size: 20pt;
    font-weight: 900;
    padding: 6px 20px;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 2px;
    transform: rotate(-10deg);
    z-index: 99;
  }

  .print-footer {
    border-top: 1.5px solid #000000;
    padding-top: 12px;
    text-align: center;
    margin-top: 30px;
    font-size: 8pt;
  }
  .print-footer b {
    display: block;
    margin-bottom: 2px;
  }

}

/* ─────────────────────────────────────────────────────────────────────────
   🖥️ ULTRA-RESPONSIVE DISPLAY RULES (FITS ANY SCREEN SIZE / MONITOR)
   ───────────────────────────────────────────────────────────────────────── */

/* Handle flex rows wrapping cleanly on narrow monitors */
.form-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap; /* Allows row content to wrap instead of overflowing */
}

/* Tab bar responsive adjustment */
@media (max-width: 900px) {
  .tab-bar {
    justify-content: flex-start !important; /* Allow natural horizontal scroll on smaller monitors/screens */
  }
}

/* Medium Monitors & Tablets */
@media (max-width: 768px) {
  .app-container {
    padding: 12px;
  }
  .card {
    padding: 14px;
    margin-bottom: 12px;
  }
  .form-grid, .settings-grid {
    grid-template-columns: 1fr !important; /* Single column on narrow screens */
    gap: 12px;
  }
}

/* Small Monitors, Laptops, and Mobile Screens */
@media (max-width: 576px) {
  body {
    font-size: 13px;
  }
  .app-container {
    padding: 8px;
  }
  .card {
    padding: 10px;
    margin-bottom: 10px;
  }
  .card-header-gradient {
    padding: 8px 12px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .card-header-gradient h2 {
    font-size: 13px;
  }
  .card-header-gradient > div {
    width: 100%;
    justify-content: space-between;
  }
  header {
    padding: 10px 16px;
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
  .totals-bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 14px;
    gap: 8px;
  }
  .totals-words {
    text-align: left;
    margin-top: 4px;
    width: 100%;
  }
  .btn {
    padding: 6px 12px;
    font-size: 12px;
  }
}