/* InvoiceFlow — refined styles */
:root {
  --brand: #2563eb;
}

body {
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

.nav-item {
  color: #64748b;
}
.nav-item:hover {
  background: #f1f5f9;
  color: #0f172a;
}
.dark .nav-item:hover {
  background: #1e293b;
  color: #f8fafc;
}
.nav-item.active {
  background: #eff6ff;
  color: #1d4ed8;
}
.dark .nav-item.active {
  background: #1e3a8a33;
  color: #93c5fd;
}

/* Cards */
.card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}
.dark .card {
  background: #0f172a;
  border-color: #1e293b;
}

/* Status badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.25rem;
}
.badge-draft { background: #f1f5f9; color: #475569; }
.badge-sent { background: #dbeafe; color: #1d4ed8; }
.badge-viewed { background: #e0e7ff; color: #4338ca; }
.badge-partially_paid { background: #fef3c7; color: #b45309; }
.badge-paid { background: #d1fae5; color: #047857; }
.badge-overdue { background: #fee2e2; color: #b91c1c; }
.badge-cancelled { background: #f1f5f9; color: #64748b; }

.dark .badge-draft { background: #1e293b; color: #94a3b8; }
.dark .badge-sent { background: #1e3a8a55; color: #93c5fd; }
.dark .badge-viewed { background: #312e8155; color: #a5b4fc; }
.dark .badge-partially_paid { background: #78350f55; color: #fcd34d; }
.dark .badge-paid { background: #064e3b55; color: #6ee7b7; }
.dark .badge-overdue { background: #7f1d1d55; color: #fca5a5; }
.dark .badge-cancelled { background: #1e293b; color: #94a3b8; }

/* Tables */
.table-wrap {
  overflow-x: auto;
  border-radius: 0.75rem;
  border: 1px solid #e2e8f0;
}
.dark .table-wrap { border-color: #1e293b; }
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
table.data-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  background: #f8fafc;
  color: #64748b;
  font-weight: 500;
  border-bottom: 1px solid #e2e8f0;
  white-space: nowrap;
}
.dark table.data-table th {
  background: #0f172a;
  border-color: #1e293b;
  color: #94a3b8;
}
table.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}
.dark table.data-table td {
  border-color: #1e293b;
}
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tbody tr:hover {
  background: #f8fafc;
}
.dark table.data-table tbody tr:hover {
  background: #1e293b55;
}

/* Forms */
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #334155;
  margin-bottom: 0.375rem;
}
.dark .form-label { color: #cbd5e1; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.5rem;
  background: white;
  font-size: 0.875rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.dark .form-input, .dark .form-select, .dark .form-textarea {
  background: #0f172a;
  border-color: #334155;
  color: #f1f5f9;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}
.form-textarea { min-height: 80px; resize: vertical; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.5rem;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: #2563eb;
  color: white;
}
.btn-primary:hover { background: #1d4ed8; }
.btn-secondary {
  background: white;
  color: #334155;
  border: 1px solid #cbd5e1;
}
.btn-secondary:hover { background: #f8fafc; }
.dark .btn-secondary {
  background: #1e293b;
  color: #e2e8f0;
  border-color: #334155;
}
.dark .btn-secondary:hover { background: #334155; }
.btn-danger {
  background: #dc2626;
  color: white;
}
.btn-danger:hover { background: #b91c1c; }
.btn-ghost {
  background: transparent;
  color: #64748b;
}
.btn-ghost:hover { background: #f1f5f9; color: #0f172a; }
.dark .btn-ghost:hover { background: #1e293b; color: #f8fafc; }
.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.15s ease;
}
.modal {
  background: white;
  border-radius: 1rem;
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  max-height: 90vh;
  overflow-y: auto;
  width: 100%;
  max-width: 32rem;
  animation: slideUp 0.2s ease;
}
.dark .modal {
  background: #0f172a;
  border: 1px solid #1e293b;
}
.modal-lg { max-width: 48rem; }
.modal-xl { max-width: 64rem; }

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

/* Toast */
.toast {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  padding: 0.875rem 1rem;
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 280px;
  animation: slideInRight 0.25s ease;
}
.dark .toast {
  background: #1e293b;
  border-color: #334155;
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Invoice builder specific */
.line-item-row {
  display: grid;
  grid-template-columns: 2fr 80px 100px 100px 40px;
  gap: 0.5rem;
  align-items: center;
}
@media (max-width: 640px) {
  .line-item-row {
    grid-template-columns: 1fr;
  }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: #64748b;
}
.empty-state svg {
  margin: 0 auto 1rem;
  opacity: 0.5;
}

/* Stat cards */
.stat-card {
  padding: 1.25rem;
  border-radius: 0.75rem;
  border: 1px solid #e2e8f0;
  background: white;
}
.dark .stat-card {
  background: #0f172a;
  border-color: #1e293b;
}
.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}
.stat-label {
  font-size: 0.8125rem;
  color: #64748b;
  margin-top: 0.25rem;
}

/* PDF preview styles */
#pdf-preview {
  background: white;
  color: #0f172a;
  font-family: 'Inter', system-ui, sans-serif;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
.dark ::-webkit-scrollbar-thumb { background: #475569; }

/* Focus visible */
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}