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(max-width:768px){.hero-actions{flex-direction:column}.btn-primary-large,.btn-secondary-large{justify-content:center;width:100%}.features-grid{grid-template-columns:1fr}.hero-features{flex-direction:column;gap:16px}.stats-grid{grid-template-columns:1fr;gap:24px}.stat-number{font-size:2.5rem}}.profile-container{background:var(--bg-light);max-width:1200px;min-height:calc(100vh - 64px);margin:0 auto;padding:40px 20px}.profile-header{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;align-items:center;gap:32px;margin-bottom:32px;padding:32px;transition:all .3s;display:flex}.profile-avatar-large{background:var(--accent-light);width:120px;height:120px;color:var(--accent);border:4px solid var(--bg-white);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:2.5rem;font-weight:700;display:flex;box-shadow:0 8px 24px rgba(0,0,0,.08)}.profile-info{flex:1}.profile-name{color:var(--text-primary);margin-bottom:8px;font-size:2rem;font-weight:700}.profile-email{color:var(--text-secondary);margin-bottom:16px;font-size:1rem}.profile-stats{gap:32px;margin-top:20px;display:flex}.stat{flex-direction:column;gap:4px;display:flex}.stat-number{color:var(--primary);font-size:1.75rem;font-weight:700}.stat-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:.85rem}.edit-profile-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 24px;font-size:.9rem;font-weight:600;transition:all .2s}.edit-profile-btn:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(62,207,142,.25)}.profile-grid{grid-template-columns:1fr;gap:24px;max-width:800px;margin-bottom:32px;display:grid}.card{background:var(--bg-white);border:1px solid var(--border);border-radius:12px;padding:24px;transition:all .3s}.card-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.card-title{color:var(--text-primary);align-items:center;gap:8px;margin:0;font-size:1.1rem;font-weight:600;display:flex}.card-title svg{width:20px;height:20px;stroke:var(--primary)}.card-action{color:var(--secondary);cursor:pointer;font-size:.85rem;font-weight:500;text-decoration:none;transition:color .2s}.card-action:hover{color:var(--text-primary)}.card-description{color:var(--text-secondary);margin:0;font-size:.9rem;line-height:1.6}.coming-soon-badge{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;letter-spacing:.5px;border-radius:12px;padding:4px 12px;font-size:.65rem;font-weight:700}.dataset-info-box{background:var(--bg-light);border:1px solid var(--border);border-radius:8px;padding:20px}.dataset-count{align-items:baseline;gap:4px;margin-bottom:8px;display:flex}.dataset-count-number{color:var(--secondary);font-size:2rem;font-weight:700}.dataset-count-total{color:var(--text-secondary);font-size:1.25rem}.dataset-count-label{color:var(--text-secondary);margin-bottom:12px;font-size:.85rem}.dataset-create-btn{background:var(--secondary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:8px 16px;font-size:.85rem;font-weight:600;transition:all .2s}.dataset-create-btn:hover{background:var(--secondary-dark);transform:translateY(-1px)}.settings-list{margin:0;padding:0;list-style:none}.setting-item{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 0;display:flex}.setting-item:last-child{border-bottom:none}.setting-label{color:var(--text-primary);margin-bottom:2px;font-size:.9rem;font-weight:500}.setting-value{color:var(--text-secondary);font-size:.85rem}.profile-actions{align-items:center;gap:12px;display:flex}.profile-action-btn{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:12px 24px;font-size:.9rem;font-weight:600;transition:all .2s;display:flex}.profile-action-btn.primary{background:var(--secondary);color:#fff}.profile-action-btn.primary:hover{background:var(--secondary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,.25)}.profile-action-btn.danger{color:#fff;background:#ef4444}.profile-action-btn.danger:hover{background:#dc2626;transform:translateY(-1px);box-shadow:0 4px 12px rgba(239,68,68,.25)}.profile-action-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}@media (max-width:1024px){.profile-grid{grid-template-columns:1fr}.profile-header{text-align:center;flex-direction:column}.profile-stats{justify-content:center}}@media (max-width:768px){.profile-container{padding:20px}.profile-header{padding:24px}.profile-avatar-large{width:80px;height:80px;font-size:1.75rem}.profile-name{font-size:1.5rem}.profile-stats{flex-wrap:wrap;gap:20px}.stat-number{font-size:1.5rem}.card{padding:20px}.profile-actions{flex-direction:column;width:100%}.profile-action-btn{justify-content:center;width:100%}}.dataset-creator-wrapper{background:var(--bg-light);min-height:calc(100vh - 64px)}.dataset-creator-container{max-width:1400px;margin:0 auto;padding:32px 20px}.page-header{margin-bottom:32px}.page-title{color:var(--text-primary);margin-bottom:8px;font-size:2rem;font-weight:700}.page-subtitle{color:var(--text-secondary);font-size:1.05rem;line-height:1.6}.limits-banner{border-radius:8px;margin-bottom:24px;padding:12px 16px;font-size:.9rem}.limits-banner.success{background:var(--primary-light);color:var(--primary-dark);border:1px solid var(--primary)}.limits-banner.warning{color:#991b1b;background:#fef2f2;border:1px solid #fecaca}.error-banner{color:#dc2626;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;margin-bottom:24px;padding:12px 16px}.creator-layout{grid-template-columns:1fr 400px;gap:24px;display:grid}.form-section{background:var(--bg-white);border:1px solid var(--border);border-radius:12px;padding:32px;transition:all .3s}.form-group{margin-bottom:24px}.form-group:last-child{margin-bottom:0}.form-label{color:var(--text-primary);margin-bottom:8px;font-size:.9rem;font-weight:600;display:block}.form-hint{color:var(--text-secondary);margin-top:6px;font-size:.85rem;line-height:1.5;display:block}.form-input{border:1px solid var(--border);background:var(--bg-white);width:100%;color:var(--text-primary);border-radius:8px;padding:10px 12px;font-family:inherit;font-size:.95rem;transition:all .2s}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);outline:none}.form-textarea{resize:vertical;min-height:120px;font-family:inherit}.form-select{border:1px solid var(--border);cursor:pointer;background:var(--bg-white);width:100%;color:var(--text-primary);border-radius:8px;padding:10px 12px;font-family:inherit;font-size:.95rem;transition:all .2s}.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);outline:none}.ai-section{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:linear-gradient(135deg,rgba(59,130,246,.08) 0%,rgba(59,130,246,.12) 100%);border:1px solid rgba(59,130,246,.25);border-radius:12px;margin-bottom:24px;padding:20px}.ai-header{align-items:center;gap:10px;margin-bottom:12px;display:flex}.ai-icon{background:var(--secondary);color:#fff;border-radius:6px;justify-content:center;align-items:center;width:24px;height:24px;font-size:.75rem;font-weight:700;display:flex}.ai-title{color:var(--secondary);font-size:.95rem;font-weight:600}.ai-description{color:var(--text-secondary);margin-bottom:12px;font-size:.85rem;line-height:1.5}.generate-btn{background:linear-gradient(135deg,var(--primary)0%,var(--secondary)100%);color:#fff;cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:10px;width:100%;padding:14px 24px;font-size:1rem;font-weight:600;transition:all .25s;display:flex}.generate-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 24px rgba(62,207,142,.3)}.generate-btn:disabled{opacity:.6;cursor:not-allowed}.generate-btn svg{width:20px;height:20px}.preview-section{flex-direction:column;gap:20px;display:flex}.template-list{flex-direction:column;gap:12px;display:flex}.template-card{border:1px solid var(--border);cursor:pointer;background:var(--bg-white);border-radius:8px;padding:16px;transition:all .2s}.template-card:hover{border-color:var(--primary);background:var(--primary-light);transform:translate(4px)}.template-name{color:var(--text-primary);margin-bottom:4px;font-size:.9rem;font-weight:600}.template-desc{color:var(--text-secondary);margin:0;font-size:.8rem;line-height:1.4}.success-banner{background:var(--primary-light);border:1px solid var(--primary);border-radius:12px;align-items:center;gap:16px;max-width:700px;margin:60px auto;padding:20px 24px;display:flex}.success-icon{background:var(--primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.success-content h3{color:var(--primary-dark);margin-bottom:4px;font-size:1.1rem;font-weight:600}.success-content p{color:var(--text-secondary);margin:0;font-size:.9rem}@media (max-width:1024px){.creator-layout{grid-template-columns:1fr}.preview-section{order:-1}}@media (max-width:768px){.dataset-creator-container{padding:20px}.form-section{padding:24px}.page-title{font-size:1.5rem}.page-subtitle{font-size:.95rem}}.premium-page{min-height:100vh;margin-bottom:0;padding-bottom:0;transition:background-color .3s;background:#f9fafb!important}.dark .premium-page{background:var(--bg-light)!important}.premium-card{transition:all .3s;background:#fff!important}.dark .premium-card{background:var(--bg-white)!important}.premium-text-primary{transition:color .3s;color:#1f2937!important}.dark .premium-text-primary{color:var(--text-primary)!important}.premium-text-secondary{transition:color .3s;color:#6b7280!important}.dark .premium-text-secondary{color:var(--text-secondary)!important}.premium-text-tertiary{transition:color .3s;color:#9ca3af!important}.dark .premium-text-tertiary{color:var(--text-tertiary)!important}.premium-border{transition:border-color .3s;border-color:#e5e7eb!important}.dark .premium-border{border-color:var(--border)!important}.premium-bg-light{transition:background-color .3s;background:#fafafa!important}.dark .premium-bg-light{background:#0f172a!important}.premium-hero-btn{color:var(--secondary);cursor:pointer;background:#fff;border:none;border-radius:8px;padding:14px 32px;font-size:1rem;font-weight:600;transition:all .25s;display:inline-block;box-shadow:0 4px 12px rgba(0,0,0,.1)}.premium-hero-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.15)}.premium-waitlist-btn{cursor:pointer;color:#fff;border:none;border-radius:8px;width:100%;padding:12px 24px;font-size:1rem;font-weight:600;transition:all .25s}.premium-waitlist-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2)}.premium-waitlist-btn.purple{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.premium-waitlist-btn.green{background:linear-gradient(135deg,#10b981 0%,#059669 100%)}.premium-waitlist-btn.orange{background:linear-gradient(135deg,#f59e0b 0%,#d97706 100%)}.premium-waitlist-btn.red{background:linear-gradient(135deg,#f5576c 0%,#dc2626 100%)}.learn-page-container{background:var(--bg-light);min-height:100vh}.learn-sections-container{background:#f9fafb;transition:background-color .3s}.dark .learn-sections-container{background:var(--bg-light)}.section-header{text-align:center;margin-bottom:50px}.level-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;margin-bottom:15px;padding:6px 16px;font-size:.85rem;font-weight:600;display:inline-block}.beginner-badge{color:#2e7d32;background:#e8f5e8}.dark .beginner-badge{color:#81c784;background:rgba(46,125,50,.3);border:1px solid rgba(129,199,132,.3)}.intermediate-badge{color:#1976d2;background:#e3f2fd}.dark .intermediate-badge{color:#64b5f6;background:rgba(25,118,210,.3);border:1px solid rgba(100,181,246,.4)}.advanced-badge{color:#c2185b;background:#fce4ec}.dark .advanced-badge{color:#f48fb1;background:rgba(194,24,91,.3);border:1px solid rgba(244,143,177,.3)}.section-title{color:#1f2937;margin-bottom:15px;font-size:2.5rem;font-weight:700;transition:color .3s}.dark .section-title{color:var(--text-primary)}.section-description{color:#6b7280;max-width:600px;margin:0 auto;font-size:1.1rem;transition:color .3s}.dark .section-description{color:var(--text-secondary)}.badge-sql{color:#3b82f6;background:#eff6ff;border:1px solid #bfdbfe}.dark .badge-sql{color:#93c5fd;background:rgba(59,130,246,.15);border:1px solid rgba(59,130,246,.3)}.badge-nonsql{color:#f59e0b;background:#fef3c7;border:1px solid #fde68a}.dark .badge-nonsql{color:#fbbf24;background:rgba(245,158,11,.15);border:1px solid rgba(245,158,11,.3)}.badge-difficulty.badge-beginner{color:#10b981;background:rgba(16,185,129,.1)}.dark .badge-difficulty.badge-beginner{color:#34d399;background:rgba(16,185,129,.15)}.badge-difficulty.badge-intermediate{color:#f59e0b;background:rgba(245,158,11,.1)}.dark .badge-difficulty.badge-intermediate{color:#fbbf24;background:rgba(245,158,11,.15)}.badge-difficulty.badge-advanced{color:#ef4444;background:rgba(239,68,68,.1)}.dark .badge-difficulty.badge-advanced{color:#f87171;background:rgba(239,68,68,.15)}.badge-category{color:#10b981;background:#f0fdf4;border:1px solid #bbf7d0}.dark .badge-category{color:#34d399;background:rgba(16,185,129,.15);border:1px solid rgba(16,185,129,.3)}.challenge-header-expanded{background:#eff6ff}.dark .challenge-header-expanded{background:rgba(59,130,246,.1)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}