/* ===== BASE GLOBAL ===== */
* {
    box-sizing: border-box;
    transition: all 0.2s ease;
  }
  
  html, body {
    margin: 0;
    padding: 0;
    background-color: #F8F9FA;
    color: #343A40;
    font-family: 'Inter', 'Poppins', sans-serif;
    min-height: 100vh;
  }
  
  .hidden {
    display: none !important;
  }
  
  /* ===== HEADER ===== */
  .header {
    background-color: #FFFFFF;
    color: #007BFF;
    padding: 16px 24px;
    font-weight: 700;
    text-align: left;
    height: 70px;
    display: flex;
    align-items: center;
    font-size: 14px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  }
  
  /* ===== SIDEBAR ===== */
  .sidebar {
    width: 100%;
    background-color: #FFFFFF;
    border-bottom: 1px solid #E9ECEF;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 10px 24px;
    box-shadow: 0 1px 5px rgba(0,0,0,0.05);
  }
  
  .menu {
    display: flex;
    gap: 10px;
  }
  
  .menu a {
    background: transparent;
    color: #495057;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
  }
  
  .menu a:hover {
    background-color: #F8F9FA;
    color: #007BFF;
  }
  
  .menu a.active {
    background-color: #007BFF;
    color: #FFFFFF;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0,123,255,0.3);
  }
  
  /* ===== CONTEÚDO ===== */
  .content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
  }
  
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  /* ===== BOTÕES ===== */
  .btn {
    cursor: pointer;
    border: none;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 10px;
    margin: 6px 0;
    transition: 0.2s;
  }
  
  .btn-primary { background-color: #007BFF; color: #fff; }
  .btn-danger { background-color: #dc3545; color: #fff; }
  .btn-secondary { background-color: #6c757d; color: #fff; }
  .btn-accent { background-color: #2196f3; color: #fff; }
  
  .btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
  }
  
  /* ===== SNACKBAR ===== */
  .snackbar {
    visibility: hidden;
    background-color: rgba(30,30,30,0.9);
    color: #fff;
    text-align: center;
    border-radius: 10px;
    padding: 14px 22px;
    position: fixed;
    z-index: 1000;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    font-size: 14px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
  }
  
  .snackbar.show {
    visibility: visible;
    animation: fadeInOut 3.5s ease-out;
  }
  
  @keyframes fadeInOut {
    0% { opacity: 0; bottom: 10px; }
    10%, 90% { opacity: 1; bottom: 30px; }
    100% { opacity: 0; bottom: 10px; }
  }