@tailwind base;@tailwind components;@tailwind utilities;.bg-noise:before{content:"";position:absolute;inset:0;background-image:url(https://grainy-gradients.vercel.app/noise.svg);opacity:.08;z-index:0;pointer-events:none}.main{background-color:#151312}.test-container{max-width:100%;min-height:100vh;padding:16px;background-color:#f8f9fa;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;box-sizing:border-box}.test-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:12px 0;border-bottom:2px solid #e9ecef;position:sticky;top:0;background-color:#f8f9fa;z-index:100}.test-header button{background-color:#6c757d;color:#fff;border:none;border-radius:8px;padding:10px 16px;font-size:14px;font-weight:500;cursor:pointer;transition:all .3s ease;min-width:70px}.test-header button:hover{background-color:#5a6268;transform:translateY(-1px)}.test-header button:active{transform:translateY(0)}.test-header h1{font-size:18px;font-weight:600;color:#212529;margin:0;text-align:center;flex:1}.test-body{margin-bottom:20px}.question-row{background-color:#fff;border-radius:12px;padding:16px;margin-bottom:16px;box-shadow:0 2px 8px #00000014;border:1px solid #e9ecef;transition:all .3s ease}.question-row:hover{box-shadow:0 4px 12px #0000001f;transform:translateY(-1px)}.question-number{display:block;font-size:16px;font-weight:600;color:#495057;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid #f1f3f4}.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.option-btn{background-color:#fff;border:2px solid #dee2e6;border-radius:10px;padding:14px 12px;font-size:16px;font-weight:600;color:#495057;cursor:pointer;transition:all .3s ease;min-height:48px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.option-btn:hover{border-color:#007bff;background-color:#f8f9ff;transform:translateY(-1px)}.option-btn:active{transform:scale(.98)}.option-btn.selected{background-color:#007bff;border-color:#007bff;color:#fff;box-shadow:0 4px 12px #007bff4d}.option-btn.selected:after{content:"✓";position:absolute;top:4px;right:6px;font-size:12px;font-weight:700}.test-container>button:last-child{width:100%;background-color:#28a745;color:#fff;border:none;border-radius:12px;padding:16px 20px;font-size:18px;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:20px;position:sticky;bottom:16px;box-shadow:0 4px 12px #28a7454d}.test-container>button:last-child:hover{background-color:#218838;transform:translateY(-2px);box-shadow:0 6px 16px #28a74566}.test-container>button:last-child:active{transform:translateY(0)}.test-container>button:last-child:disabled{background-color:#6c757d;cursor:not-allowed;transform:none;box-shadow:none}.test-container>button:last-child:disabled:hover{background-color:#6c757d;transform:none;box-shadow:none}.progress-container{background-color:#fff;border-radius:10px;padding:16px;margin-bottom:20px;box-shadow:0 2px 8px #00000014}.progress-text{font-size:14px;color:#6c757d;margin-bottom:8px;text-align:center}.progress-bar{width:100%;height:8px;background-color:#e9ecef;border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,#007bff,#28a745);border-radius:4px;transition:width .5s ease}@media (min-width: 768px){.test-container{max-width:600px;margin:0 auto;padding:20px}.test-header h1{font-size:24px}.options{grid-template-columns:repeat(4,1fr);gap:12px}.question-row{padding:20px}.question-number{font-size:18px}}@media (min-width: 1024px){.test-container{max-width:800px;padding:24px}.test-header h1{font-size:28px}.question-row{padding:24px}}@media (prefers-color-scheme: dark){.test-container{background-color:#121212;color:#fff}.test-header{background-color:#121212;border-bottom-color:#333}.test-header h1{color:#fff}.question-row{background-color:#1e1e1e;border-color:#333}.question-number{color:#ccc;border-bottom-color:#333}.option-btn{background-color:#2d2d2d;border-color:#444;color:#ccc}.option-btn:hover{background-color:#3a3a3a;border-color:#007bff}.progress-container{background-color:#1e1e1e;border-color:#333}}.question-row{animation:slideInUp .4s ease-out}.option-btn:focus{outline:2px solid #007bff;outline-offset:2px}.test-header button:focus,.test-container>button:focus{outline:2px solid #007bff;outline-offset:2px}.loading{display:flex;justify-content:center;align-items:center;min-height:200px;color:#6c757d;font-size:16px}.error{background-color:#f8d7da;color:#721c24;padding:16px;border-radius:8px;margin:20px 0;text-align:center}.success{background-color:#d4edda;color:#155724;padding:16px;border-radius:8px;margin:20px 0;text-align:center}.math-field-test{width:100%;padding:8px;font-size:18px;border:2px solid #e0e0e0;border-radius:6px;min-height:50px}.math-field-test:focus{outline:none;border-color:#2196f3;box-shadow:0 0 0 3px #2196f31a}.add-test-container{max-width:100%;min-height:100vh;padding:16px;background-color:#f8f9fa;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;box-sizing:border-box}.add-test-container h2{font-size:20px;font-weight:600;color:#212529;margin:0 0 20px;text-align:center;padding-bottom:12px;border-bottom:2px solid #e9ecef;position:sticky;top:0;background-color:#f8f9fa;z-index:100;padding-top:8px}.math-input-row{background-color:#fff;border-radius:12px;padding:16px;margin-bottom:16px;box-shadow:0 2px 8px #00000014;border:1px solid #e9ecef;transition:all .3s ease;animation:slideInUp .4s ease-out}.math-input-row:hover{box-shadow:0 4px 12px #0000001f;transform:translateY(-1px)}.math-input-wrapper{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.math-input-wrapper label{font-size:16px;font-weight:600;color:#495057;display:block}.math-field-input{width:100%;min-height:60px;padding:12px;font-size:18px;border:2px solid #dee2e6;border-radius:10px;background-color:#fff;transition:all .3s ease;box-sizing:border-box}.math-field-input:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 3px #007bff1a;background-color:#f8f9ff}.math-field-input:hover{border-color:#adb5bd}.add-btn{width:48px;height:48px;background-color:#007bff;color:#fff;border:none;border-radius:50%;font-size:28px;font-weight:300;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #007bff4d;margin:0 auto}.add-btn:hover{background-color:#0056b3;transform:scale(1.1) rotate(90deg);box-shadow:0 6px 16px #007bff66}.add-btn:active{transform:scale(.95) rotate(90deg)}.submit-btn{width:100%;background-color:#28a745;color:#fff;border:none;border-radius:12px;padding:16px 20px;font-size:18px;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:20px;position:sticky;bottom:16px;box-shadow:0 4px 12px #28a7454d}.submit-btn:hover{background-color:#218838;transform:translateY(-2px);box-shadow:0 6px 16px #28a74566}.submit-btn:active{transform:translateY(0)}.submit-btn:disabled{background-color:#6c757d;cursor:not-allowed;transform:none;box-shadow:none;opacity:.6}.submit-btn:disabled:hover{background-color:#6c757d;transform:none;box-shadow:none}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (min-width: 768px){.add-test-container{max-width:600px;margin:0 auto;padding:20px}.add-test-container h2{font-size:24px}.math-input-row{padding:20px}.math-input-wrapper label{font-size:18px}.math-field-input{font-size:20px;min-height:70px}.add-btn{width:56px;height:56px;font-size:32px}}@media (min-width: 1024px){.add-test-container{max-width:800px;padding:24px}.add-test-container h2{font-size:28px}.math-input-row{padding:24px}.math-field-input{min-height:80px}}@media (prefers-color-scheme: dark){.add-test-container{background-color:#121212}.add-test-container h2{color:#fff;background-color:#121212;border-bottom-color:#333}.math-input-row{background-color:#1e1e1e;border-color:#333}.math-input-wrapper label{color:#ccc}.math-field-input{background-color:#2d2d2d;border-color:#444;color:#fff}.math-field-input:focus{background-color:#3a3a3a;border-color:#007bff}.math-field-input:hover{border-color:#555}}.add-btn:focus,.submit-btn:focus{outline:2px solid #007bff;outline-offset:2px}.math-field-input:focus-within{outline:none;border-color:#007bff;box-shadow:0 0 0 3px #007bff1a}.loading-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.loading-spinner{width:48px;height:48px;border:4px solid #f3f3f3;border-top:4px solid #007bff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.message{position:fixed;top:20px;left:50%;transform:translate(-50%);padding:16px 24px;border-radius:8px;font-weight:500;z-index:1001;animation:slideDown .3s ease-out;max-width:90%;text-align:center}.message.success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.message.error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}@keyframes slideDown{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.empty-state{text-align:center;padding:40px 20px;color:#6c757d}.empty-state p{font-size:16px;margin-bottom:20px}