:root{--primary-color: #5a00a3;--secondary-color: #ab5dea;--background-color: #f8f8f8;--text-color: #333;--light-background: #ffffff;--hover-color: rgba(148, 71, 186, .2);--shadow: rgba(0, 0, 0, .1);--border-radius: 10px;--font-family: "Helvetica", sans-serif;--font-size-base: 1rem;--font-size-lg: 1.2rem;--font-size-xl: 2rem;--font-size-xxl: 2.5rem;--font-size-xxx: 3rem}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--background-color);color:var(--text-color);text-align:center;line-height:1.6;display:flex;flex-direction:column;min-height:100vh}a{text-decoration:none;color:inherit}ul{list-style:none}.transition{transition:all .3s ease}header{background:linear-gradient(to right,var(--primary-color),var(--secondary-color));color:#fff;padding:80px 0;box-shadow:0 10px 30px #00000026;border-bottom:6px solid rgba(0,0,0,.1)}header .header-container{display:flex;flex-direction:column;align-items:center}header h1{font-size:var(--font-size-xxl);margin-bottom:20px;letter-spacing:3px;text-transform:uppercase}header p{font-size:var(--font-size-lg);margin-bottom:40px;max-width:800px}nav{display:flex;justify-content:center;gap:30px;flex-wrap:wrap;margin-top:20px}nav ul{display:flex;gap:20px}nav a{color:#fff;font-size:var(--font-size-base);font-weight:700;padding:16px 30px;border-radius:var(--border-radius);background-color:#ffffff1a;transition:background .3s ease,transform .3s ease,box-shadow .3s ease}nav a:hover{background:var(--hover-color);transform:translateY(-4px);box-shadow:0 6px 20px var(--shadow)}nav a:active{transform:translateY(2px);box-shadow:0 3px 6px #0003}.balance-display{font-size:1.6rem;font-weight:700;color:var(--text-color);background:var(--light-background);padding:20px 40px;border-radius:50px;box-shadow:0 8px 30px #0003;margin-top:30px;margin-right:30px;transition:box-shadow .3s ease,transform .3s ease}.balance-display:hover{box-shadow:0 10px 40px #0000004d;transform:translateY(-6px)}.balance-display:active{transform:translateY(3px);box-shadow:0 6px 18px #0003}main{border-radius:20px;background-color:var(--light-background);box-shadow:0 10px 30px #00000026}.features{text-align:center;margin-top:40px}.features h2{color:var(--primary-color);font-size:var(--font-size-xl);margin-bottom:30px}.features-list{max-width:960px;margin:80px auto;padding:50px 40px;border-radius:20px;background-color:var(--light-background);border:1px solid #e0e0e0;box-shadow:0 12px 40px #0000001a;overflow:hidden;display:flex;flex-direction:column;gap:20px}.features-list li{background:#f9f9f9;padding:30px;font-size:1.8em;border-radius:var(--border-radius);box-shadow:0 6px 20px #0000001a;transition:transform .3s ease,box-shadow .3s ease,background-color .3s ease;display:flex;flex-direction:column;align-items:center;text-align:center;border:1px solid #ddd;background-color:#fff}.features-list li:hover{transform:translateY(-8px);box-shadow:0 15px 40px #00000026;background-color:#f0f0f0}.features-list li a{font-size:1.2rem;color:var(--primary-color);font-weight:700;text-decoration:none;display:block;text-align:center;margin-top:15px;transition:color .3s ease,transform .2s ease,letter-spacing .2s ease}.features-list li a:hover{color:var(--secondary-color);transform:translateY(-2px);letter-spacing:1px;text-decoration:none}.features-list li a:focus{color:var(--secondary-color);outline:none;transform:translateY(-2px);text-decoration:none}footer{background:linear-gradient(to right,var(--primary-color),var(--secondary-color));color:#fff;padding:40px 20px;font-size:var(--font-size-base);margin-top:auto;box-shadow:0 -6px 18px var(--shadow)}footer p{margin:0}button{font-size:var(--font-size-base);padding:16px 32px;background:linear-gradient(to right,var(--primary-color),var(--secondary-color));color:#fff;border:none;border-radius:var(--border-radius);cursor:pointer;transition:background-color .3s ease,transform .2s ease}button:hover{background-color:var(--secondary-color);transform:translateY(-2px)}button:active{transform:translateY(2px);box-shadow:0 3px 6px #0003}.quiz-container{max-width:600px;margin:0 auto;padding:30px;background-color:var(--light-background);border-radius:var(--border-radius);box-shadow:0 6px 24px var(--shadow)}.quiz-container h2{font-size:var(--font-size-xl);margin-bottom:30px}.quiz-container input{width:100%;padding:16px;font-size:var(--font-size-base);margin-bottom:20px;border:1px solid #ccc;border-radius:var(--border-radius);box-shadow:0 4px 12px var(--shadow);transition:box-shadow .3s ease}.quiz-container input:focus{box-shadow:0 8px 24px var(--shadow);outline:none}.quiz-container button{font-size:var(--font-size-base);padding:16px 32px;background-color:var(--primary-color);color:#fff;border:none;border-radius:var(--border-radius);cursor:pointer;transition:background-color .3s ease,transform .2s ease}.quiz-container button:hover{background-color:var(--secondary-color);transform:translateY(-2px)}.quiz-container button:active{transform:translateY(2px);box-shadow:0 3px 6px #0003}.quiz-container p.correct{color:green;font-weight:700}.quiz-container p.wrong{color:red;font-weight:700}.grocery-list{max-width:600px;margin:0 auto;padding:30px;background-color:var(--light-background);border-radius:var(--border-radius)}