/* Cores Modernas com Gradiente */
:root {
  --primary: #4361ee;
  --primary-dark: #3a0ca3;
  --secondary: #4895ef;
  --success: #4cc9f0;
  --danger: #f72585;
  --light: #f8f9fa;
  --dark: #212529;
  --gradient: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

/* Layout Responsivo */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f7fa;
  color: var(--dark);
  line-height: 1.6;
}

.container {
  padding: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* Cards Modernos */
.card {
  border: none;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
  background: white;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

.card-header {
  background: var(--gradient);
  color: white;
  padding: 1.25rem;
  font-weight: 600;
}

/* Formulário Responsivo */
.form-control, .form-select {
  border: 2px solid #e9ecef;
  border-radius: 8px;
  padding: 0.75rem;
  transition: all 0.3s;
}

.form-control:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 0.25rem rgba(72, 149, 239, 0.25);
}

/* Botões com Gradiente */
.btn {
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s;
}

.btn-primary {
  background: var(--gradient);
  border: none;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* Tabela Responsiva */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table th {
  background: var(--gradient);
  color: white;
}

/* Player de Áudio Moderno */
audio {
  width: 100%;
  border-radius: 8px;
  background: #f8f9fa;
}

/* Navbar */
.navbar {
  background: var(--gradient);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Media Queries para Mobile */
@media (max-width: 768px) {
  .card {
    border-radius: 0;
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .table th, .table td {
    padding: 0.75rem;
  }
}