:root {
      --primary: #2a64cc;
      --primary-dark: #204ca6;
      --success: #00b25b;
      --warning: #ff9f1c;
      --danger: #e63946;
      --bg: #f5f7f4;
      --card: #ffffff;
      --text: #333;
      --text-light: #777;
      --border: #e5e7eb;
    }

    body {
      margin: 0;
      background: var(--bg);
      font-family: system-ui, -apple-system;
      color: var(--text);
    }

    .app {
      display: flex;
      height: 100vh;
    }

    /* SIDEBAR */
    .sidebar {
      width: 240px;
      background: #1f2937;
      color: #fff;
      display: flex;
      flex-direction: column;
      padding: 1rem 0;
    }

    .sidebar h4 {
      text-align: center;
      margin-bottom: 1rem;
    }

    .menu-item {
      padding: 12px 20px;
      display: flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      transition: 0.2s;
      position: relative;
    }

    .menu-item:hover {
      background: rgba(255,255,255,0.08);
    }

    .menu-item.active {
      background: var(--primary);
    }

    .menu-item.active::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      height: 100%;
      width: 4px;
      background: var(--success);
    }

    /* MAIN */
    .main {
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .topbar {
      background: #fff;
      padding: 12px 20px;
      border-bottom: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
    }

    .content {
      padding: 20px;
      overflow: auto;
    }

    /* CARDS */
    .cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 15px;
      margin-bottom: 20px;
    }

    .card-custom {
      background: var(--card);
      border-radius: 12px;
      padding: 18px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
      transition: 0.2s;
      cursor: pointer;
      border-left: 4px solid transparent;
    }

    .card-custom:hover {
      transform: translateY(-3px);
      border-left: 4px solid var(--primary);
    }

    .card-custom h5 {
      font-size: 13px;
      color: var(--text-light);
      margin: 0;
    }

    .card-custom h2 {
      margin: 5px 0 0;
    }

    /* BUTTONS */
    .btn-primary-custom {
      background: var(--primary);
      color: #fff;
      border: none;
      padding: 10px 16px;
      border-radius: 8px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 500;
      transition: 0.2s;
    }

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

    .btn-success-custom {
      background: var(--success);
      color: #fff;
      border-radius: 8px;
      padding: 10px 16px;
      border: none;
      transition: 0.2s;
    }

    .btn-success-custom:hover {
      opacity: 0.9;
      transform: translateY(-1px);
    }

    /* TABLE */
    .table-container {
      background: #fff;
      padding: 15px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    .filters {
      display: flex;
      gap: 10px;
      margin-bottom: 12px;
      align-items: center;
    }