/* ========================================
   ARSAPOS Invoice Generator - Styles
   Based on Figma Design Theme
   ======================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800&family=Poppins:wght@400;500;600;700&display=swap');

/* ========================================
   CSS Variables - Design Tokens
   ======================================== */
:root {
  /* Primary Colors */
  --primary: #4D1455;
  --primary-light: #6B2A75;
  --primary-dark: #3A0F40;

  /* Neutral Colors */
  --gray-900: #1A1C21;
  --gray-800: #2D3039;
  --gray-600: #5E6470;
  --gray-400: #9CA3AF;
  --gray-200: #E5E7EB;
  --gray-100: #D7DAE0;
  --gray-50: #F9FAFB;
  --white: #FFFFFF;

  /* Semantic Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;

  /* Typography */
  --font-primary: 'Montserrat', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  --font-tertiary: 'Poppins', sans-serif;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--gray-900);
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
  min-height: 100vh;
}

/* ========================================
   Typography
   ======================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.3;
  color: var(--gray-900);
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1.125rem;
}

p {
  color: var(--gray-600);
}

/* ========================================
   Layout
   ======================================== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.app-header {
  background: var(--primary);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
}

.app-header .logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.app-header .logo img {
  height: 50px;
  width: auto;
}

.app-header .logo h1 {
  font-family: var(--font-primary);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 1px;
}

.app-header .header-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* ========================================
   Main Content Grid
   ======================================== */
.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
  min-height: calc(100vh - 80px);
}

@media (max-width: 1200px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Cards & Panels
   ======================================== */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.card-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card-header h2 i {
  font-size: 1.25rem;
}

.card-body {
  padding: var(--spacing-lg);
}

/* ========================================
   Form Styles
   ======================================== */
.form-section {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--gray-100);
}

.form-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.form-section-title {
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-section-title i {
  font-size: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

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

.form-row.triple {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {

  .form-row,
  .form-row.triple {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-600);
}

.form-group label .required {
  color: var(--error);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-secondary);
  font-size: 0.875rem;
  color: var(--gray-900);
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:hover {
  border-color: var(--gray-400);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(77, 20, 85, 0.1);
}

.form-control::placeholder {
  color: var(--gray-400);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235E6470' d='M6 8.825L1.175 4 2.233 2.942 6 6.708l3.767-3.766L10.825 4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* Toggle Switch for Personal/Company */
.toggle-group {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: var(--spacing-md);
}

.toggle-btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-600);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.toggle-btn:hover:not(.active) {
  background: var(--gray-200);
}

/* ========================================
   Invoice Items Table
   ======================================== */
.items-table-container {
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.items-table th {
  background: var(--gray-50);
  color: var(--gray-600);
  font-weight: 600;
  text-align: left;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 2px solid var(--gray-200);
  white-space: nowrap;
}

.items-table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}

.items-table .item-input {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: 0.8125rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.items-table .item-input:focus {
  outline: none;
  border-color: var(--primary);
}

.items-table .col-description {
  width: 40%;
}

.items-table .col-qty,
.items-table .col-rate,
.items-table .col-amount {
  width: 15%;
  text-align: right;
}

.items-table .col-action {
  width: 50px;
  text-align: center;
}

.items-table .amount-cell {
  font-weight: 600;
  color: var(--gray-900);
  text-align: right;
  padding-right: var(--spacing-md);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: var(--white);
}

.btn-success:hover:not(:disabled) {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  transform: translateY(-1px);
}

.btn-danger {
  background: transparent;
  color: var(--error);
  padding: var(--spacing-xs);
}

.btn-danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.1);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

.btn-icon {
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.add-item-btn {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--gray-50);
  color: var(--primary);
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius-md);
  font-weight: 500;
}

.add-item-btn:hover {
  background: rgba(77, 20, 85, 0.05);
  border-color: var(--primary);
}

/* ========================================
   Summary Section
   ======================================== */
.summary-section {
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  font-size: 0.875rem;
}

.summary-row .label {
  color: var(--gray-600);
}

.summary-row .value {
  font-weight: 500;
  color: var(--gray-900);
}

.summary-row.total {
  border-top: 2px solid var(--gray-200);
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-md);
}

.summary-row.total .label,
.summary-row.total .value {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
}

/* ========================================
   Invoice Preview
   ======================================== */
.invoice-preview-container {
  background: var(--gray-100);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 600px;
  overflow: auto;
}

.invoice-preview {
  background: var(--white);
  width: 210mm;
  min-height: 297mm;
  padding: 15mm;
  box-shadow: var(--shadow-xl);
  font-size: 10pt;
  position: relative;
}

/* Invoice Header */
.invoice-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

.invoice-header-left {
  display: flex;
  align-items: flex-start;
}

.invoice-brand {
  background: var(--primary);
  color: var(--white);
  padding: 15px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.invoice-brand .invoice-title {
  font-family: var(--font-primary);
  font-size: 20pt;
  font-weight: 700;
  letter-spacing: 1px;
}

.invoice-brand .invoice-meta {
  font-size: 8pt;
  opacity: 0.9;
}

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

.invoice-logo img {
  max-height: 60px;
  width: auto;
}

/* Invoice Parties */
.invoice-parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 25px;
}

.invoice-party h4 {
  font-family: var(--font-primary);
  font-size: 9pt;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.invoice-party p {
  font-size: 8pt;
  color: var(--gray-600);
  line-height: 1.6;
  margin: 0;
}

.invoice-party .party-name {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 9pt;
}

/* Invoice Items */
.invoice-items-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
  font-size: 8pt;
}

.invoice-items-table th {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  text-align: left;
  padding: 10px 12px;
}

.invoice-items-table th:first-child {
  border-radius: 4px 0 0 0;
}

.invoice-items-table th:last-child {
  border-radius: 0 4px 0 0;
  text-align: right;
}

.invoice-items-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-900);
}

.invoice-items-table td:last-child {
  text-align: right;
  font-weight: 500;
}

.invoice-items-table tr:nth-child(even) {
  background: var(--gray-50);
}

/* Invoice Summary */
.invoice-summary {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 25px;
}

.invoice-summary-box {
  width: 250px;
}

.invoice-summary-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 8pt;
}

.invoice-summary-row .label {
  color: var(--gray-600);
}

.invoice-summary-row .value {
  font-weight: 500;
  color: var(--gray-900);
}

.invoice-summary-row.total {
  border-top: 2px solid var(--gray-200);
  margin-top: 8px;
  padding-top: 10px;
}

.invoice-summary-row.total .label,
.invoice-summary-row.total .value {
  font-size: 11pt;
  font-weight: 700;
  color: var(--primary);
}

/* Invoice Payment & Terms */
.invoice-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
}

.invoice-payment h4,
.invoice-terms h4 {
  font-family: var(--font-primary);
  font-size: 9pt;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.invoice-payment p,
.invoice-terms p {
  font-size: 8pt;
  color: var(--gray-600);
  line-height: 1.6;
  margin: 0 0 4px 0;
}

.invoice-payment .payment-label {
  color: var(--gray-400);
  font-size: 7pt;
  text-transform: uppercase;
}

.invoice-payment .payment-value {
  color: var(--gray-900);
  font-weight: 500;
}

/* Thanks Message */
.invoice-thanks {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px dashed var(--gray-200);
  font-family: var(--font-tertiary);
  font-size: 9pt;
  color: var(--gray-600);
}

/* Status Badge */
.status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 8pt;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 8px;
}

.status-pending {
  background: #FFF7ED;
  color: #C2410C;
  border: 1px solid #FFEDD5;
}

.status-processing {
  background: #EFF6FF;
  color: #1D4ED8;
  border: 1px solid #DBEAFE;
}

.status-paid {
  background: #ECFDF5;
  color: #047857;
  border: 1px solid #D1FAE5;
}

.status-partial {
  background: #F5F3FF;
  color: #6D28D9;
  border: 1px solid #EDE9FE;
}

.status-scheduled {
  background: #ECFEFF;
  color: #0E7490;
  border: 1px solid #CFFAFE;
}

.status-failed {
  background: #FEF2F2;
  color: #B91C1C;
  border: 1px solid #FEE2E2;
}

.status-cancelled {
  background: #F3F4F6;
  color: #374151;
  border: 1px solid #E5E7EB;
}

.status-custom {
  background: #F3F4F6;
  color: #1F2937;
  border: 1px solid #E5E7EB;
}

/* Watermark */
.watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  font-size: 6rem;
  font-weight: 800;
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
  border: 4px solid currentColor;
  padding: 10px 40px;
  border-radius: 10px;
  white-space: nowrap;
}

.watermark.paid {
  color: #059669;
}

.watermark.cancelled {
  color: #DC2626;
}

/* ========================================
   Action Buttons Bar
   ======================================== */
.action-bar {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
}

.action-bar .btn {
  flex: 1;
}

/* ========================================
   Modal Styles
   ======================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow: auto;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.125rem;
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--gray-100);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

/* ========================================
   Saved Invoices List
   ======================================== */
.saved-invoices-list {
  max-height: 300px;
  overflow-y: auto;
}

.saved-invoice-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.saved-invoice-item:hover {
  background: var(--gray-50);
  border-color: var(--primary);
}

.saved-invoice-info h4 {
  font-size: 0.875rem;
  margin-bottom: 2px;
}

.saved-invoice-info p {
  font-size: 0.75rem;
  color: var(--gray-400);
}

.saved-invoice-actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* ========================================
   Notifications / Toasts
   ======================================== */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  min-width: 280px;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

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

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

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

.toast-icon {
  font-size: 1.25rem;
}

.toast.success .toast-icon {
  color: var(--success);
}

.toast.error .toast-icon {
  color: var(--error);
}

.toast.warning .toast-icon {
  color: var(--warning);
}

.toast-message {
  flex: 1;
  font-size: 0.875rem;
  color: var(--gray-900);
}

.toast-close {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* ========================================
   Print Styles
   ======================================== */
@media print {

  /* Hide all UI chrome */
  .app-header,
  .action-bar,
  .toast-container,
  .modal-overlay,
  .toggle-group,
  .btn,
  #btnRefreshPreview,
  .card-header,
  .card:not(:has(.invoice-preview-container)) {
    /* Attempt to hide non-preview cards */
    display: none !important;
  }

  /* Robust fallback if :has is not supported */
  .main-content>.card:first-child {
    display: none !important;
  }

  body {
    background: white;
    font-size: 12pt;
    color: black;
  }

  .main-content {
    display: block !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
  }

  /* Reset Card Styles for Print */
  .card {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }

  .invoice-preview-container {
    background: white !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    width: 100% !important;
    min-height: auto !important;
    overflow: visible !important;
    display: block !important;
  }

  .invoice-preview {
    box-shadow: none !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    transform: none !important;
  }

  /* Ensure page breaks behave nicely */
  .invoice-items-table {
    page-break-inside: auto;
  }

  tr {
    page-break-inside: avoid;
    page-break-after: auto;
  }
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .app-header .header-actions {
    width: 100%;
    justify-content: center;
  }

  .main-content {
    padding: var(--spacing-md);
  }

  .invoice-preview {
    width: 100%;
    min-height: auto;
    padding: var(--spacing-md);
    font-size: 9pt;
  }

  .invoice-parties,
  .invoice-footer {
    grid-template-columns: 1fr;
  }

  .action-bar {
    flex-wrap: wrap;
  }

  .action-bar .btn {
    flex: 1 1 calc(50% - var(--spacing-sm));
  }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

.slide-up {
  animation: slideUp 0.3s ease;
}

/* ========================================
   Utilities
   ======================================== */
.text-right {
  text-align: right;
}

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

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

.text-success {
  color: var(--success);
}

.text-error {
  color: var(--error);
}

.font-bold {
  font-weight: 700;
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.hidden {
  display: none;
}