:root {
  /* Cores Principais - Paleta Premium */
  --bg-primary: #0f172a;      /* Fundo escuro slate */
  --bg-surface: #1e293b;      /* Cards e modais */
  --text-main: #f8fafc;       /* Texto claro principal */
  --text-muted: #94a3b8;      /* Texto secundário */
  
  /* Acentos */
  --accent-brand: #3b82f6;    /* Azul elétrico padrão do PDV */
  --accent-hover: #2563eb;
  
  /* Status Semânticos */
  --success-color: #10b981;   /* Verde para no prazo/pago */
  --success-hover: #059669;
  --danger-color: #ef4444;    /* Vermelho para atrasado/cancelar */
  --danger-hover: #dc2626;
  --warning-color: #f59e0b;   /* Amarelo/Laranja para pendente */
  
  /* Componentes */
  --border-radius: 8px;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 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);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
}

/* Sidebar de Navegação */
.sidebar {
  width: 250px;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-link:hover, .nav-link.active {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--accent-brand);
}

/* Área Principal */
.main-content {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.page-header {
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-title {
  font-size: 1.875rem;
  font-weight: 700;
}

/* Cards e Layout do PDV */
.pos-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

.card {
  background-color: var(--bg-surface);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

/* Formulários e Inputs */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-main);
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-brand);
}

/* Tabelas (Para PDV Carrinho e Promissórias) */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 1rem;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

/* Botões Modernos */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.875rem;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--accent-brand);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

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

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

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

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

.btn-icon {
  padding: 0.5rem;
  background: transparent;
  color: var(--text-muted);
}

.btn-icon:hover {
  color: var(--text-main);
  background-color: var(--bg-primary);
}

.btn-block {
  width: 100%;
}

/* Badges (Para Status de Promissórias) */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--warning-color);
}

.badge-danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger-color);
}

/* Resumo Financeiro (PDV) */
.totals-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.totals-row.grand-total {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--success-color);
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-color);
}

/* Modais */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background-color: var(--bg-surface);
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 500px;
  padding: 2rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

/* ── Checkout totals ── */
.checkout-totals {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  padding: 1rem;
  border: 1px solid var(--border-color);
}

/* ── Botões de Forma de Pagamento ── */
.btn-pagto {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  color: var(--text-muted);
  border-radius: 10px;
  padding: .6rem .5rem;
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .3rem;
}

.btn-pagto:hover {
  border-color: var(--accent-brand);
  color: var(--accent-brand);
  background: rgba(59,130,246,.06);
}

.btn-pagto.ativo {
  border-color: var(--accent-brand);
  background: rgba(59,130,246,.15);
  color: var(--accent-brand);
  box-shadow: 0 0 0 1px var(--accent-brand);
}

.btn-pagto.ativo.pix   { border-color:#10b981; background:rgba(16,185,129,.12); color:#10b981; box-shadow:0 0 0 1px #10b981; }
.btn-pagto.ativo.credito,
.btn-pagto.ativo.debito { border-color:#8b5cf6; background:rgba(139,92,246,.12); color:#8b5cf6; box-shadow:0 0 0 1px #8b5cf6; }

/* ── Lucide spin ── */
.lucide-spin {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}