body {
            font-family: georgia, sans-serif;
            padding: 20px;
            background: repeating-linear-gradient(
            45deg,
            #94B4C1,
            #94B4C1 40px,
            #EAE0CF 40px,
            #EAE0CF 80px
          );
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            max-width:600px;
            width:100%;
            dispay:block;
            margin:0 auto;
        }
        .device-indicator {
            position: fixed;
            top: 10px;
            right: 10px;
            background-color: #333;
            color: white;
            padding: 5px 10px;
            border-radius: 5px;
            font-size: 0.8rem;
            z-index: 1000;
        }
        .lesson-container {
            background-color: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
            margin-bottom: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .header {
            text-align: center;
            margin-bottom: 20px;
        }
        .progress-container {
            background-color: #f8f9fa;
            border-radius: 8px;
            padding: 10px 15px;
            margin-bottom: 20px;
            text-align: center;
        }
        .progress-counter {
            font-size: 1.2rem;
            font-weight: bold;
            color: #4285f4;
        }
        .word-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 30px 20px;
            background-color: #f8f9fa;
            border-radius: 8px;
            margin-bottom: 20px;
            flex-grow: 1;
        }
        .sinhala-meaning {
            font-size: 1.5rem;
            color: #6a1b9a;
            margin-bottom: 20px;
            text-align: center;
        }
        .english-word {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 30px;
            text-align: center;
            letter-spacing: 2px;
        }
        .english-word span {
            transition: all 0.3s ease;
        }
        .controls {
            display: flex;
            gap: 15px;
            justify-content: center;
            margin-top: 20px;
        }
        .control-button {
            background-color: #4285f4;
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 50px;
            cursor: pointer;
            font-size: 1rem;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .control-button:hover {
            background-color: #3367d6;
            transform: scale(1.05);
        }
        .control-button:disabled {
            background-color: #cccccc;
            cursor: not-allowed;
            transform: scale(1);
        }
        .next-button {
            background-color: #4caf50;
        }
        .next-button:hover {
            background-color: #388e3c;
        }
        .restart-button {
            background-color: #ff9800;
        }
        .restart-button:hover {
            background-color: #f57c00;
        }
        .completion-message {
            display: none;
            text-align: center;
            padding: 40px 20px;
        }
        .completion-title {
            font-size: 2rem;
            color: #4caf50;
            margin-bottom: 20px;
        }
        .completion-text {
            font-size: 1.2rem;
            margin-bottom: 30px;
        }
        /*=========================================*/
		#nextLessonBtn {
		  padding: 12px 24px;
		  font-size: 16px;
		  background-color: #28a745; /* Green for celebration */
		  color: white;
		  border: none;
		  border-radius: 8px;
		  cursor: pointer;
		  transition: background-color 0.3s ease;
		}

		#nextLessonBtn:hover {
		  background-color: #218838;
		}
		/*=========================================*/
        
        /* Responsive adjustments */
        @media (max-width: 768px) {
            .english-word {
                font-size: 2rem;
            }
            .sinhala-meaning {
                font-size: 1.3rem;
            }
            .controls {
                flex-direction: column;
                align-items: center;
            }
            .control-button {
                width: 200px;
                justify-content: center;
            }
        }