/* QuikVoicing - Invoice Generator */
/* Design System matching Bilvix */

/* ===== CSS Variables ===== */
:root {
  /* Colors - Bilvix Design System */
  --color-white: #FFFFFF;
  --color-slate-900: #0F172A;
  --color-slate-600: #475569;
  --color-slate-400: #94A3B8;
  --color-slate-200: #E2E8F0;
  --color-slate-100: #F1F5F9;
  --color-slate-50: #F8FAFC;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-pill: 9999px;

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

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

body {
  font-family: var(--font-family);
  background-color: var(--color-white);
  color: var(--color-slate-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-slate-900);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  color: var(--color-slate-600);
  margin-bottom: var(--spacing-md);
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-slate-200);
  padding: var(--spacing-md) 0;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-slate-900);
  text-decoration: none;
}

.logo svg {
  width: 32px;
  height: 32px;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-slate-900);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #1e293b;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-slate-900);
  border: 1px solid var(--color-slate-200);
}

.btn-secondary:hover {
  background-color: var(--color-slate-50);
  border-color: var(--color-slate-300);
}

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

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

/* ===== Main Container ===== */
.main-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  width: 100%;
  overflow-x: hidden;
}

.hero-section {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-slate-900) 0%, var(--color-slate-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-slate-600);
  margin-bottom: var(--spacing-lg);
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-slate-100);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  color: var(--color-slate-600);
}

/* ===== Two-Column Layout (Form Left, Preview Right) ===== */
.invoice-workspace {
  display: grid;
  grid-template-columns: 52% 48%;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  align-items: start;
}

@media (max-width: 1400px) {
  .invoice-workspace {
    grid-template-columns: 1fr;
  }
}

/* ===== Form Section ===== */
.form-section {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-slate-200);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  max-width: 100%;
  overflow-x: hidden;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-slate-900);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-slate-200);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-slate-700);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  font-family: var(--font-family);
  color: var(--color-slate-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-slate-900);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

.form-input::placeholder {
  color: var(--color-slate-400);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

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

/* ===== Items Table ===== */
.items-table-container {
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  table-layout: fixed;
}

.items-table thead {
  background-color: var(--color-slate-50);
}

.items-table th {
  padding: 0.5rem 0.25rem;
  text-align: left;
  font-weight: 600;
  color: var(--color-slate-700);
  border-bottom: 2px solid var(--color-slate-200);
}

.items-table td {
  padding: 0.5rem 0.25rem;
  border-bottom: 1px solid var(--color-slate-200);
}

.items-table input {
  width: 100%;
  padding: 0.25rem 0.375rem;
  font-size: 0.8125rem;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
}

/* Specific column widths for better layout */
.items-table th:nth-child(1),
.items-table td:nth-child(1) {
  width: 5%;
}

.items-table th:nth-child(2),
.items-table td:nth-child(2) {
  width: 25%;
}

.items-table th:nth-child(3),
.items-table td:nth-child(3) {
  width: 10%;
}

.items-table th:nth-child(4),
.items-table td:nth-child(4) {
  width: 12%;
}

.items-table th:nth-child(5),
.items-table td:nth-child(5) {
  width: 12%;
}

.items-table th:nth-child(6),
.items-table td:nth-child(6) {
  width: 10%;
}

.items-table th:nth-child(7),
.items-table td:nth-child(7) {
  width: 10%;
}

.items-table th:nth-child(8),
.items-table td:nth-child(8) {
  width: 12%;
}

.items-table th:nth-child(9),
.items-table td:nth-child(9) {
  width: 4%;
}


.btn-remove {
  background-color: transparent;
  color: var(--color-slate-400);
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.btn-remove:hover {
  background-color: #fee2e2;
  color: #dc2626;
}

.add-item-btn {
  margin-top: var(--spacing-md);
}

/* ===== Totals Summary ===== */
.totals-summary {
  background-color: var(--color-slate-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.totals-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  font-size: 0.9375rem;
}

.totals-row.total {
  font-size: 1.25rem;
  font-weight: 700;
  padding-top: var(--spacing-md);
  border-top: 2px solid var(--color-slate-200);
  margin-top: var(--spacing-sm);
}

/* ===== Template Selector ===== */
.template-selector {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.template-option {
  flex: 1;
  position: relative;
}

.template-option input[type="radio"] {
  position: absolute;
  opacity: 0;
}

.template-label {
  display: block;
  padding: var(--spacing-md);
  border: 2px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.template-option input[type="radio"]:checked+.template-label {
  border-color: var(--color-slate-900);
  background-color: var(--color-slate-50);
}

.template-label:hover {
  border-color: var(--color-slate-400);
}

/* ===== Action Buttons ===== */
.action-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

/* ===== Preview Section ===== */
.preview-section {
  width: 100%;
  position: relative;
  max-height: none;
  overflow-y: visible;
}

.preview-container {
  background-color: #f5f5f5;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-slate-200);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  max-width: 100%;
  overflow-x: hidden;
}

.preview-container h2 {
  margin-bottom: var(--spacing-md);
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-slate-700);
}

/* A4 Paper Preview */
#invoicePreview {
  background: white;
  /* A4 dimensions: 210mm x 297mm at 96 DPI = 794px x 1123px */
  width: 210mm;
  min-height: 297mm;
  max-width: 100%;
  margin: 0 auto;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1), 0 0 40px rgba(0, 0, 0, 0.05);
  transform-origin: top center;
  position: relative;
  transform: scale(0.95);
}

/* Scale down for smaller screens while maintaining aspect ratio */
@media (max-width: 1600px) {
  #invoicePreview {
    transform: scale(0.9);
  }
}

@media (max-width: 1400px) {
  #invoicePreview {
    transform: scale(1);
  }

  .invoice-workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1200px) {
  #invoicePreview {
    transform: scale(1);
    margin-bottom: 0;
  }

  .preview-section {
    position: static;
    max-height: none;
  }
}

/* ===== Invoice Preview Styles ===== */
.invoice-preview {
  position: relative;
  background-color: var(--color-white);
  padding: 20mm;
  font-size: 0.875rem;
  max-width: 100%;
  overflow-x: auto;
  word-wrap: break-word;
  min-height: 257mm;
  /* 297mm - 40mm padding */
  box-sizing: border-box;
}

/* Template 1 Styles */
.template-1 .invoice-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-slate-900);
}

.template-1 .invoice-meta {
  font-size: 0.8125rem;
  color: var(--color-slate-600);
}

.template-1 .invoice-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.template-1 .logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-slate-900);
}

.template-1 .invoice-title {
  font-size: 3rem;
  font-weight: 400;
  text-align: center;
  margin: var(--spacing-xl) 0;
  font-family: 'Georgia', serif;
  letter-spacing: 0.1em;
}

.template-1 .invoice-parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.template-1 .party-label {
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-slate-900);
}

.template-1 .party-name {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.template-1 .invoice-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-xl);
  font-size: 0.8125rem;
}

.template-1 .invoice-table thead {
  background-color: var(--color-slate-200);
}

.template-1 .invoice-table th,
.template-1 .invoice-table td {
  padding: var(--spacing-sm);
  text-align: left;
  border: 1px solid var(--color-slate-300);
}

.template-1 .invoice-table th {
  font-weight: 600;
  color: var(--color-slate-900);
}

.template-1 .invoice-totals {
  max-width: 300px;
  margin-left: auto;
  margin-bottom: var(--spacing-lg);
}

.template-1 .invoice-totals .totals-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  font-size: 0.875rem;
}

.template-1 .invoice-totals .totals-row.total {
  font-weight: 700;
  font-size: 1rem;
  padding-top: var(--spacing-sm);
  border-top: 2px solid var(--color-slate-900);
  margin-top: var(--spacing-sm);
}

.template-1 .invoice-words {
  margin-bottom: var(--spacing-lg);
  font-size: 0.8125rem;
}

.template-1 .invoice-payment {
  margin-bottom: var(--spacing-2xl);
  font-size: 0.8125rem;
}

.template-1 .payment-title {
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.template-1 .authorized {
  text-align: right;
  margin-top: var(--spacing-md);
  font-size: 0.8125rem;
}

.template-1 .invoice-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  margin: 0;
  padding: 0;
}

.template-1 .wave {
  display: block;
  width: 100%;
  height: 120px;
}

.template-1 .footer-text {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  font-weight: 600;
  z-index: 10;
}

/* Template 2 Styles */
.template-2 .invoice-header-2 {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
}

.template-2 .invoice-title-2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.template-2 .invoice-meta-2 {
  font-size: 0.8125rem;
  color: var(--color-slate-600);
}

.template-2 .invoice-logo-2 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.template-2 .logo-text-2 {
  font-size: 1.5rem;
  font-weight: 800;
}

.template-2 .invoice-parties-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.template-2 .party-label-2 {
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.template-2 .invoice-table-2 {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-xl);
  font-size: 0.8125rem;
  border: 1px solid var(--color-slate-900);
}

.template-2 .invoice-table-2 th,
.template-2 .invoice-table-2 td {
  padding: var(--spacing-sm);
  text-align: left;
  border: 1px solid var(--color-slate-900);
}

.template-2 .invoice-table-2 thead {
  background-color: var(--color-white);
}

.template-2 .invoice-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
}

.template-2 .notes-section {
  font-size: 0.8125rem;
}

.template-2 .notes-title {
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.template-2 .totals-section {
  border: 1px solid var(--color-slate-900);
  padding: var(--spacing-md);
}

.template-2 .totals-section .totals-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
}

.template-2 .totals-section .total-2 {
  font-weight: 700;
  font-size: 1.125rem;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-slate-900);
  margin-top: var(--spacing-sm);
}

.template-2 .invoice-words-2 {
  margin-bottom: var(--spacing-lg);
  font-size: 0.8125rem;
}

.template-2 .invoice-payment-2 {
  margin-bottom: var(--spacing-lg);
  font-size: 0.8125rem;
}

.template-2 .payment-title-2 {
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.template-2 .authorized-2 {
  text-align: right;
  margin-top: var(--spacing-md);
}

.template-2 .invoice-footer-2 {
  margin-top: var(--spacing-xl);
}

.template-2 .footer-bar {
  height: 40px;
  background: linear-gradient(90deg, #7c3aed 0%, #a855f7 100%);
}

/* ===== File Input Styling ===== */
input[type="file"] {
  padding: 0.5rem;
  cursor: pointer;
}

input[type="file"]::file-selector-button {
  padding: 0.5rem 1rem;
  background-color: var(--color-slate-900);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  margin-right: 0.75rem;
  transition: all 0.2s ease;
}

input[type="file"]::file-selector-button:hover {
  background-color: #1e293b;
  transform: translateY(-1px);
}


/* ===== Conversion Modal ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-slate-400);
}

.modal-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.modal-text {
  color: var(--color-slate-600);
  margin-bottom: var(--spacing-xl);
}

.modal-features {
  text-align: left;
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  background-color: var(--color-slate-50);
  border-radius: var(--radius-lg);
}

.modal-features li {
  margin-bottom: var(--spacing-sm);
  color: var(--color-slate-700);
}

/* ===== Footer ===== */
.footer {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--color-slate-200);
  text-align: center;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer-text {
  color: var(--color-slate-600);
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  margin-top: var(--spacing-lg);
  color: var(--color-slate-400);
  font-size: 0.875rem;
}

/* ===== Responsive Design ===== */
/* Desktop First - 1200px+ */
@media (max-width: 1200px) {
  .main-container {
    max-width: 100%;
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .invoice-workspace {
    gap: var(--spacing-xl);
  }
}

/* Tablet - 1024px and below */
@media (max-width: 1024px) {
  .invoice-workspace {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .preview-section {
    position: static;
    margin-top: var(--spacing-lg);
  }

  .preview-container {
    max-height: none;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .trust-badges {
    gap: var(--spacing-md);
  }

  .badge {
    font-size: 0.8125rem;
    padding: 0.375rem 0.75rem;
  }
}

/* Tablet Portrait - 768px and below */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }

  .header-cta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .header-cta .btn {
    width: 100%;
  }

  .hero-title {
    font-size: 2rem;
    line-height: 1.1;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .trust-badges {
    flex-direction: column;
    align-items: stretch;
  }

  .badge {
    justify-content: center;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .section-title {
    font-size: 1.125rem;
  }

  .items-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .items-table {
    min-width: 600px;
    font-size: 0.8125rem;
  }

  .items-table th,
  .items-table td {
    padding: 0.375rem;
  }

  .template-selector {
    flex-direction: column;
  }

  .action-buttons {
    flex-direction: column;
  }

  .action-buttons .btn {
    width: 100%;
  }

  .template-1 .invoice-parties,
  .template-2 .invoice-parties-2,
  .template-2 .invoice-summary {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .template-1 .invoice-title {
    font-size: 2.25rem;
  }

  .template-2 .invoice-title-2 {
    font-size: 2rem;
  }

  .modal-content {
    width: 95%;
    padding: var(--spacing-lg);
  }

  .modal-title {
    font-size: 1.25rem;
  }

  .modal-features {
    padding: var(--spacing-md);
  }
}

/* Mobile - 480px and below */
@media (max-width: 480px) {
  .main-container {
    padding: var(--spacing-md);
  }

  .form-section,
  .preview-container {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 0.9375rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  .logo svg {
    width: 24px;
    height: 24px;
  }

  .badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.625rem;
  }

  .form-label {
    font-size: 0.8125rem;
  }

  .form-input,
  .form-select,
  .form-textarea {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
  }

  .btn {
    padding: 0.625rem 1rem;
    font-size: 0.8125rem;
  }

  .btn-lg {
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
  }

  .invoice-preview {
    padding: var(--spacing-md);
    font-size: 0.75rem;
  }

  .template-1 .invoice-title {
    font-size: 1.75rem;
    letter-spacing: 0.05em;
  }

  .template-2 .invoice-title-2 {
    font-size: 1.5rem;
  }

  .template-1 .invoice-table,
  .template-2 .invoice-table-2 {
    font-size: 0.7rem;
  }

  .template-1 .invoice-table th,
  .template-1 .invoice-table td,
  .template-2 .invoice-table-2 th,
  .template-2 .invoice-table-2 td {
    padding: 0.25rem;
  }

  .footer-title {
    font-size: 1.25rem;
  }

  .footer-text {
    font-size: 0.875rem;
  }
}

/* Extra Small Mobile - 360px and below */
@media (max-width: 360px) {
  .hero-title {
    font-size: 1.5rem;
  }

  .main-container {
    padding: var(--spacing-sm);
  }

  .form-section,
  .preview-container {
    padding: var(--spacing-sm);
  }

  .items-table {
    min-width: 500px;
  }
}

/* ===== Print Styles ===== */
@media print {
  body {
    background-color: white;
  }

  .header,
  .form-section,
  .action-buttons,
  .footer,
  .modal {
    display: none !important;
  }

  .invoice-workspace {
    grid-template-columns: 1fr;
  }

  .preview-section {
    position: static;
  }

  .preview-container {
    box-shadow: none;
    border: none;
    padding: 0;
  }
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

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

/* ===== Utility Classes ===== */
.text-center {
  text-align: center;
}

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

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}