body {
      background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
      color: #f0f0f0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      margin: 0;
    }
    .container {
	  width: 100%;
      max-width: 1650px;
	  max-height: 1080px;
      margin: auto;
      padding: 200px 15px 180px 15px;
    }
    .tab-content {
      display: none;
      animation: fadeIn 0.3s ease-in-out;
    }
    .active {
      display: block;
    }
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .card {
      background-color: #222;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 4px 12px rgba(0,0,0,0);
	  margin-right: 30px;
    }
    label, input, select, button {
      width: 97.25%;
      margin-bottom: 15px;
    }
    input, select, button {
      padding: 10px;
      background-color: #333;
      color: #fff;
      border: none;
      border-radius: 4px;
      font-size: 0.95em;
    }
    input:focus, select:focus {
      background-color: #444;
      outline: none;
    }
	input[type="submit" i] {
	  width: 98.75%;
	}
	#submitregister {
	  background-color: #4caf50;
      font-weight: 600;
      cursor: pointer;
	}
	#submitregister:hover {
	  background-color: #66bb6a;
	}
    button {
      background-color: #4caf50;
      font-weight: 600;
      cursor: pointer;
    }
    button:hover {
      background-color: #66bb6a;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 15px;
    }
    th, td {
      padding: 12px;
      text-align: left;
      border-bottom: 1px solid #444;
    }
    th {
      background-color: #333;
      font-weight: 600;
    }
    .bottom-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background-color: #1a1a1a;
      display: flex;
      justify-content: space-around;
      padding: 10px 0;
      box-shadow: 0 -2px 10px rgba(0,0,0,0.7);
      z-index: 100;
    }
    .bottom-nav button, .logout-button {
      background: none;
      border: none;
      color: #ccc;
      font-size: 14px;
      font-weight: bold;
      cursor: pointer;
    }
    .bottom-nav button:hover, .logout-button:hover, .bottom-nav button.active-tab {
      color: #4caf50;
    }