* { box-sizing: border-box; }
    html, body { height: 100%; margin: 0; padding: 0; }
    body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }

    @keyframes confetti {
      0% {
        transform: translate3d(0, -120px, 0) rotate(0deg);
        opacity: 1;
      }
      100% {
        transform: translate3d(var(--drift, 0px), 110vh, 0) rotate(720deg);
        opacity: 0;
      }
    }

    .confetti {
      animation: confetti 3s ease-in forwards;
      position: fixed;
      top: -20px;
      pointer-events: none;
      z-index: 9999;
    }

    .status-red { background-color: #fee2e2; border-left: 4px solid #dc2626; }
    .status-yellow { background-color: #fef3c7; border-left: 4px solid #f59e0b; }
    .status-green { background-color: #dcfce7; border-left: 4px solid #16a34a; }

    .toast { animation: slideIn 0.3s ease-out; }
    @keyframes slideIn {
      from { transform: translateY(-100%); opacity: 0; }
      to { transform: translateY(0); opacity: 1; }
    }

    .sidebar-nav {
      position: fixed;
      left: 0;
      top: 0;
      height: 100%;
      width: 250px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      display: flex;
      flex-direction: column;
      overflow-y: auto;
      z-index: 40;
    }

    .main-content { margin-left: 250px; height: 100%; overflow-y: auto; }

    .nav-button {
      width: 100%;
      text-align: left;
      padding: 12px 16px;
      border: none;
      background: rgba(255, 255, 255, 0.1);
      color: white;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.2s;
      font-size: 14px;
    }

    .nav-button:hover { background: rgba(255, 255, 255, 0.2); transform: translateX(4px); }
    .nav-button.active { background: rgba(255, 255, 255, 0.3); border-left: 4px solid #fbbf24; }

    .stat-card {
      background: white;
      border-radius: 12px;
      padding: 20px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

    .notification-box {
      background: linear-gradient(135deg, #fbbf24 0%, #f97316 100%);
      color: white;
      border-radius: 12px;
      padding: 16px;
      margin-bottom: 20px;
    }