:root {
            --primary: #6F4E37;
            --primary-light: #A67B5B;
            --primary-dark: #4A3524;
            --accent: #FFD700;
            --background: #FFF8F0;
            --text: #2C1810;
        }

        @keyframes pulse {

            0%,
            100% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.05);
            }
        }

        @keyframes shake {

            0%,
            100% {
                transform: translateX(0);
            }

            10%,
            30%,
            50%,
            70%,
            90% {
                transform: translateX(-5px);
            }

            20%,
            40%,
            60%,
            80% {
                transform: translateX(5px);
            }
        }

        .animate-pulse {
            animation: pulse 2s infinite;
        }

        .animate-shake {
            animation: shake 0.5s;
        }

        .progress-bar {
            transition: width 0.5s ease-in-out;
        }

        .code-bg {
            background-color: #1e1e1e;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 20px 20px;
        }

        .terminal {
            font-family: 'Courier New', monospace;
        }

        .coffee-stain {
            position: absolute;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle at center, rgba(166, 123, 91, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            filter: blur(20px);
            z-index: 0;
        }

        .coffee-stain-1 {
            top: -50px;
            right: -50px;
            transform: rotate(15deg);
        }

        .coffee-stain-2 {
            bottom: -30px;
            left: -30px;
            transform: rotate(-15deg);
            opacity: 0.3;
        }

        .input-group {
            position: relative;
            transition: all 0.3s ease;
        }

        .input-group:focus-within {
            transform: translateY(-2px);
        }

        .custom-slider {
            -webkit-appearance: none;
            width: 100%;
            height: 4px;
            background: var(--primary-light);
            border-radius: 2px;
            outline: none;
        }

        .custom-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 20px;
            height: 20px;
            background: var(--primary);
            border-radius: 50%;
            cursor: pointer;
            transition: transform 0.2s ease;
        }

        .custom-slider::-webkit-slider-thumb:hover {
            transform: scale(1.2);
        }

        .efficiency-meter {
            position: relative;
            overflow: hidden;
            border-radius: 9999px;
            background: #E5E7EB;
        }

        .efficiency-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-light) 0%, var(--primary) 100%);
            transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .slide-up {
            animation: slideUp 0.5s ease forwards;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-10px);
            }
        }

        @keyframes spin {
            from {
                transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
            }
        }

        @keyframes typing {
            from {
                width: 0
            }

            to {
                width: 100%
            }
        }

        .floating {
            animation: float 3s ease-in-out infinite;
        }

        .spinning {
            animation: spin 2s linear infinite;
        }

        .typing {
            overflow: hidden;
            white-space: nowrap;
            animation: typing 3s steps(40, end);
        }

        .coffee-cup {
            position: relative;
            display: inline-block;
        }

        .coffee-steam {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 8px;
            height: 20px;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 4px;
            animation: steam 2s ease-in-out infinite;
        }

        @keyframes steam {

            0%,
            100% {
                transform: translateX(-50%) scaleY(1);
                opacity: 0.3;
            }

            50% {
                transform: translateX(-50%) scaleY(1.5);
                opacity: 0.1;
            }
        }

        .achievement-badge {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: white;
            padding: 1rem;
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transform: translateX(120%);
            transition: transform 0.3s ease;
            z-index: 1000;
        }

        .achievement-badge.show {
            transform: translateX(0);
        }

        .confetti {
            position: fixed;
            width: 10px;
            height: 10px;
            background-color: #f00;
            opacity: 0;
            z-index: 999;
        }

        @keyframes confetti-fall {
            0% {
                transform: translateY(-100vh) rotate(0deg);
                opacity: 1;
            }

            100% {
                transform: translateY(100vh) rotate(360deg);
                opacity: 0;
            }
        }