:root{--bg-dark:#0B0E14;--card-bg:rgba(21, 26, 34, 0.7);--card-border:rgba(42, 49, 60, 0.8);--text-primary:#E2E8F0;--text-secondary:#94A3B8;--accent-cyan:#00F0FF;--accent-purple:#B45CFF;--success:#10B981;--error:#EF4444;--grad-purple:rgba(180, 92, 255, 0.12);--grad-cyan:rgba(0, 240, 255, 0.08);--th-bg:rgba(0, 0, 0, 0.4);--font-sans:'Outfit', sans-serif;--font-mono:'JetBrains Mono', monospace}:root[data-theme="light"]{--bg-dark:#F1F5F9;--card-bg:rgba(255, 255, 255, 0.85);--card-border:rgba(203, 213, 225, 0.8);--text-primary:#0F172A;--text-secondary:#475569;--accent-cyan:#075985;--accent-purple:#7E22CE;--success:#059669;--error:#DC2626;--grad-purple:rgba(126, 34, 206, 0.08);--grad-cyan:rgba(2, 132, 199, 0.08);--th-bg:rgba(0, 0, 0, 0.05)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-dark);background-image:radial-gradient(circle at 15% 50%, var(--grad-purple), transparent 25%),radial-gradient(circle at 85% 30%, var(--grad-cyan), transparent 25%);background-attachment:fixed;color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:stretch;line-height:1.5}#app-container{width:100%;max-width:1400px;padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:var(--card-bg);border:1px solid var(--card-border);border-radius:1rem;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.logo{display:flex;align-items:center;gap:.75rem}.logo-text{display:flex;flex-direction:column}.logo h1{font-weight:700;font-size:1.5rem;line-height:1.1;background:linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px}.logo-subtitle{font-size:.65rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1.5px;border-top:1px solid var(--card-border);margin-top:.1rem;padding-top:.15rem;text-align:right}nav#level-selector{display:flex;gap:.5rem;background:rgba(0,0,0,0.2);padding:.35rem;border-radius:2rem;border:1px solid var(--card-border)}.level-btn{background:transparent;border:none;color:var(--text-secondary);padding:.5rem 1.25rem;border-radius:1.5rem;font-family:var(--font-sans);font-weight:600;font-size:.9rem;cursor:pointer;transition:all .3s ease}.level-btn:hover{color:var(--text-primary)}.level-btn.active{background:var(--card-border);color:var(--text-primary);box-shadow:0 4px 12px rgba(0,0,0,0.1)}.stats{display:flex;gap:.75rem}.stat-badge{font-weight:600;padding:.5rem 1rem;border-radius:1rem;font-size:.9rem}.stat-badge.success{color:var(--success);background:rgba(16, 185, 129, 0.1);border:1px solid rgba(16, 185, 129, 0.2)}.stat-badge.neutral{color:var(--text-primary);background:rgba(255, 255, 255, 0.05);border:1px solid rgba(255, 255, 255, 0.1)}.stat-badge.error{color:var(--error);background:rgba(239, 68, 68, 0.1);border:1px solid rgba(239, 68, 68, 0.2)}#workspace{display:grid;grid-template-columns:350px 1fr;gap:1.5rem;flex-grow:1}.panel{display:flex;flex-direction:column;gap:1.5rem}.glass-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:1rem;padding:1.5rem;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 8px 32px rgba(0, 0, 0, 0.2);display:flex;flex-direction:column;gap:1rem}h2{font-size:1.1rem;font-weight:600;color:var(--text-primary);border-bottom:1px solid var(--card-border);padding-bottom:.75rem}.schema-card{flex-grow:1}#schema-viewer{overflow-y:auto;flex-grow:1}.table-schema{margin-bottom:1rem;background:rgba(0,0,0,0.2);border:1px solid rgba(255,255,255,0.05);border-radius:.5rem;overflow:hidden}.table-schema h3{font-size:.9rem;padding:.5rem .75rem;background:rgba(255,255,255,0.05);color:var(--accent-cyan);font-family:var(--font-mono)}.table-schema ul{list-style:none}.table-schema li{padding:.4rem .75rem;font-family:var(--font-mono);font-size:.85rem;color:var(--text-secondary);display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,0.02)}.table-schema li span.type{color:var(--accent-purple);font-size:.75rem}.hint-header{display:flex;justify-content:space-between;align-items:center}.hint-header h2{border-bottom:none;padding-bottom:0}#show-hint-btn{background:transparent;border:1px solid var(--accent-purple);color:var(--accent-purple);padding:.3rem .75rem;border-radius:.5rem;cursor:pointer;font-family:var(--font-sans);font-size:.8rem;transition:all .2s ease}#show-hint-btn:hover{background:rgba(112, 0, 255, 0.1)}#hint-content{font-size:.9rem;color:var(--text-secondary);background:rgba(112, 0, 255, 0.05);padding:.75rem;border-radius:.5rem;border-left:3px solid var(--accent-purple)}.hidden{display:none !important}.question-header{display:flex;justify-content:space-between;align-items:center}.question-header h2{border-bottom:none;padding-bottom:0}.badge{background:rgba(255,255,255,0.1);padding:.2rem .6rem;border-radius:1rem;font-size:.8rem;font-weight:700}#question-text{font-size:1.1rem;line-height:1.6}.editor-card{flex-grow:1}.editor-header{display:flex;justify-content:space-between;align-items:center}.editor-header h2{border-bottom:none;padding-bottom:0}.editor-actions{display:flex;gap:.5rem}.secondary-btn{background:rgba(255, 255, 255, 0.05);border:1px solid var(--card-border);color:var(--text-secondary);padding:.5rem 1rem;border-radius:.5rem;font-family:var(--font-sans);font-weight:500;cursor:pointer;transition:all .2s ease}.secondary-btn:hover:not(:disabled){background:rgba(255, 255, 255, 0.1);color:var(--text-primary)}.secondary-btn:disabled{opacity:.5;cursor:not-allowed}.glow-btn{background:linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));border:none;color:white;padding:.5rem 1.5rem;border-radius:.5rem;font-family:var(--font-sans);font-weight:600;cursor:pointer;box-shadow:0 4px 15px rgba(0, 240, 255, 0.3);transition:all .3s ease}.glow-btn:hover:not(:disabled){box-shadow:0 6px 20px rgba(0, 240, 255, 0.5);transform:translateY(-1px)}.glow-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.editor-container{flex-grow:1;display:flex;background:var(--bg-dark);border-radius:.5rem;border:1px solid var(--card-border);padding:1rem;position:relative;min-height:200px}#query-input{width:100%;background:transparent;border:none;color:var(--text-primary);font-family:var(--font-mono);font-size:1rem;line-height:1.5;resize:none;outline:none}#query-input::placeholder{color:#475569}#query-input:disabled{cursor:not-allowed}.output-card{min-height:150px}.table-container{overflow-x:auto;border-radius:.5rem;border:1px solid var(--card-border)}#query-results{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:.85rem;text-align:left}#query-results th{background:var(--th-bg);color:var(--accent-cyan);padding:.75rem 1rem;border-bottom:1px solid var(--card-border);position:sticky;top:0}#query-results td{padding:.75rem 1rem;border-bottom:1px solid rgba(255,255,255,0.05);color:var(--text-primary)}#query-results tbody tr:nth-child(even){background:rgba(255,255,255,0.02)}#query-results tbody tr:hover{background:rgba(255,255,255,0.05)}.error-text{color:var(--error);background:rgba(239, 68, 68, 0.1);padding:1rem;border-radius:.5rem;font-family:var(--font-mono);border:1px solid rgba(239, 68, 68, 0.3);margin-bottom:1rem}#feedback-panel{border-left:4px solid transparent}#feedback-panel.success{border-left-color:var(--success);background:rgba(16, 185, 129, 0.05)}#feedback-panel.error{border-left-color:var(--error);background:rgba(239, 68, 68, 0.05)}#feedback-title{font-size:1.1rem;font-weight:600}.success #feedback-title{color:var(--success)}.error #feedback-title{color:var(--error)}.overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);backdrop-filter:blur(5px);display:flex;justify-content:center;align-items:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .3s ease}.overlay.active{opacity:1;pointer-events:all}.intro-content{max-width:600px;text-align:center;gap:1.5rem}.intro-content h2{font-size:2rem;border:none;background:linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.intro-buttons{display:flex;justify-content:center;gap:1rem;margin-top:1rem}.intro-buttons .level-btn{background:rgba(255,255,255,0.1);border:1px solid var(--card-border);padding:.75rem 1.5rem}.intro-buttons .level-btn:hover{background:rgba(255,255,255,0.2)}.app-footer{text-align:center;padding:1.5rem 1rem .5rem;font-size:.8rem;color:var(--text-secondary);border-top:1px solid rgba(255, 255, 255, 0.05);margin-top:auto}:root[data-theme="light"] .app-footer{border-top:1px solid rgba(0, 0, 0, 0.05)}@media (max-width:900px){#workspace{grid-template-columns:1fr}}@media (max-width:768px){.panel{display:contents}.schema-card{order:1}.question-card{order:2}.editor-card{order:3}.hint-card{order:4}.output-card{order:5}.feedback-card{order:6}header{flex-direction:column;align-items:stretch;gap:1rem}.logo{justify-content:center}.logo-subtitle{text-align:center}nav#level-selector{justify-content:center;flex-wrap:wrap}.stats{justify-content:center;flex-wrap:wrap}.editor-header{flex-direction:column;align-items:stretch;gap:.75rem}.editor-actions{display:flex;flex-wrap:wrap;width:100%}.editor-actions button{flex:1;text-align:center}.question-header{flex-direction:column;align-items:flex-start;gap:.5rem}#schema-viewer{max-height:250px}.intro-content h2{font-size:1.5rem}.intro-buttons{flex-direction:column;align-items:stretch}.intro-buttons .level-btn{width:100%}}