:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --light-gray: #f8fafc;
  --medium-gray: #e2e8f0;
  --dark-gray: #334155;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--light-gray);
  color: var(--text-primary);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* Navbar moderna */
.navbar {
  background: white !important;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1rem 0;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-color) !important;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary) !important;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--primary-color) !important;
}

/* Container principal */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Cards modernos */
.card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  background: white;
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: 1.5rem;
}

/* Botões modernos */
.btn {
  font-weight: 500;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

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

.btn-outline-primary {
  background: transparent;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: white;
}

.btn-outline-danger {
  background: transparent;
  border: 1px solid var(--danger-color);
  color: var(--danger-color);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Formulários modernos */
.form-control, .form-select {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  background: white;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
  outline: none;
}

.form-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

/* Tabelas modernas */
.table {
  background: white;
  border-radius: 8px;
  overflow: hidden;
}

.table thead th {
  background: var(--light-gray);
  border: none;
  font-weight: 600;
  color: var(--text-primary);
  padding: 1rem;
}

.table tbody td {
  border-color: var(--border-color);
  padding: 1rem;
  vertical-align: middle;
}

.table tbody tr:hover {
  background: var(--light-gray);
}

/* Badges modernos */
.badge {
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
}

.bg-primary {
  background: var(--primary-color) !important;
}

.bg-secondary {
  background: var(--secondary-color) !important;
}

.bg-success {
  background: var(--success-color) !important;
}

.bg-danger {
  background: var(--danger-color) !important;
}

.bg-info {
  background: var(--warning-color) !important;
}

/* Dashboard cards */
.dashboard-card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
  height: 100%;
}

.dashboard-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.dashboard-card h5 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 1rem;
}

.dashboard-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Login page */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-card {
  background: white;
  border-radius: 16px;
  padding: 3rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-title {
  text-align: center;
  font-weight: 700;
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

/* Alerts modernos */
.alert {
  border: none;
  border-radius: 8px;
  padding: 1rem 1.5rem;
}

.alert-info {
  background: rgb(59 130 246 / 0.1);
  color: var(--primary-color);
}

/* Footer */
.footer {
  background: white;
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 4rem;
  color: var(--text-secondary);
}

/* Responsivo */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  .login-card {
    margin: 1rem;
    padding: 2rem;
  }
  
  .dashboard-card {
    margin-bottom: 1rem;
  }
}

/* Animações suaves */
* {
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

/* Dropdown moderno */
.dropdown-menu {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
}

.dropdown-item {
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.dropdown-item:hover {
  background: var(--light-gray);
  color: var(--text-primary);
}