:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-tertiary: #1a1a25;--color-bg-card: rgba(26, 26, 37, .8);--color-bg-glass: rgba(255, 255, 255, .03);--color-primary: #6366f1;--color-primary-light: #818cf8;--color-primary-dark: #4f46e5;--color-secondary: #8b5cf6;--color-accent: #22d3ee;--color-success: #10b981;--color-success-bg: rgba(16, 185, 129, .1);--color-error: #ef4444;--color-error-bg: rgba(239, 68, 68, .1);--color-warning: #f59e0b;--color-warning-bg: rgba(245, 158, 11, .1);--color-info: #3b82f6;--color-info-bg: rgba(59, 130, 246, .1);--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-text-inverse: #0a0a0f;--color-border: rgba(255, 255, 255, .08);--color-border-light: rgba(255, 255, 255, .12);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3);--ease-out-expo: cubic-bezier(.16, 1, .3, 1);--ease-out-quart: cubic-bezier(.25, 1, .5, 1);--ease-in-out: cubic-bezier(.4, 0, .2, 1);--transition-fast: .15s var(--ease-out-quart);--transition-base: .3s var(--ease-out-expo);--transition-slow: .5s var(--ease-out-expo);--z-dropdown: 100;--z-modal: 200;--z-tooltip: 300;--z-toast: 400}[data-theme=light]{--color-bg-primary: #f8fafc;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f1f5f9;--color-bg-card: rgba(255, 255, 255, .9);--color-bg-glass: rgba(0, 0, 0, .03);--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-text-inverse: #f8fafc;--color-border: rgba(0, 0, 0, .08);--color-border-light: rgba(0, 0, 0, .12);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--shadow-glow: 0 0 20px rgba(99, 102, 241, .2)}[data-theme=light] body:before{background:radial-gradient(ellipse at 20% 20%,rgba(99,102,241,.05) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(139,92,246,.05) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(34,211,238,.02) 0%,transparent 70%)}[data-theme=light] .nav{background:#f8fafce6}[data-theme=light] .mobile-nav{background:#f8fafcf2}[data-theme=light] 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3.5rem}h1{font-size:var(--text-4xl);margin-bottom:var(--space-8)}h2{font-size:var(--text-3xl);margin-bottom:var(--space-6)}h3{font-size:var(--text-2xl);margin-bottom:var(--space-4)}.container{max-width:1200px;padding-left:var(--space-8);padding-right:var(--space-8)}}.hover-premium{position:relative;transition:all .4s var(--ease-out-expo);z-index:1}.hover-premium:after{content:"";position:absolute;top:-1px;right:-1px;bottom:-1px;left:-1px;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border-radius:inherit;z-index:-1;opacity:0;transition:opacity .4s var(--ease-out-expo)}.hover-premium:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 20px 40px #0006,0 0 20px #6366f133;border-color:transparent}.hover-premium:hover:after{opacity:.2}.phases-grid{display:grid;grid-template-columns:1fr;gap:var(--space-4)}@media (min-width: 768px){.phases-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1280px){.phases-grid{grid-template-columns:repeat(3,1fr)}}.streak-compact{display:flex;align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-2);background:var(--color-bg-tertiary);border-radius:var(--radius-full);font-weight:var(--font-semibold)}.streak-compact .streak-count{font-size:var(--text-sm);color:var(--color-text-primary)}.streak-display{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4);background:linear-gradient(135deg,#f973161a,#ea580c1a);border:1px solid rgba(249,115,22,.3);border-radius:var(--radius-xl)}.streak-display.inactive{background:var(--color-bg-tertiary);border-color:var(--color-border)}.streak-flame-container{font-size:2.5rem;line-height:1}.streak-flame{display:inline-block;animation:flameGlow 1.5s ease-in-out infinite alternate}.streak-flame.inactive{filter:grayscale(100%);opacity:.5;animation:none}@keyframes flameGlow{0%{transform:scale(1);filter:drop-shadow(0 0 5px 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var(--transition-fast)}.achievement-badge:hover{transform:translateY(-2px);border-color:var(--color-primary);box-shadow:var(--shadow-glow)}.achievement-badge.locked{opacity:.4;filter:grayscale(100%)}.achievement-badge .badge-icon{font-size:1.5rem}.achievement-badge .badge-name{font-size:var(--text-xs);text-align:center;color:var(--color-text-secondary)}.achievement-popup{position:fixed;top:20%;left:50%;transform:translate(-50%);z-index:var(--z-toast);background:linear-gradient(135deg,var(--color-bg-card),var(--color-bg-secondary));border:2px solid var(--color-primary);border-radius:var(--radius-2xl);padding:var(--space-6);text-align:center;box-shadow:0 20px 40px #00000080,var(--shadow-glow);animation:popupSlide .5s var(--ease-out-expo)}@keyframes popupSlide{0%{opacity:0;transform:translate(-50%) translateY(-30px) scale(.9)}to{opacity:1;transform:translate(-50%) translateY(0) scale(1)}}.achievement-popup .popup-icon{font-size:4rem;margin-bottom:var(--space-4);animation:celebrate .6s 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var(--transition-fast);color:var(--color-text-primary)}.user-dropdown-trigger:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-light)}.user-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:var(--font-bold);color:#fff}.user-avatar.large{width:48px;height:48px;font-size:var(--text-lg)}.user-name{font-size:var(--text-sm);max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dropdown-arrow{transition:transform var(--transition-fast);color:var(--color-text-muted)}.dropdown-arrow.open{transform:rotate(180deg)}.user-dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:240px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);z-index:var(--z-dropdown);animation:dropdownSlide .2s var(--ease-out-expo);overflow:hidden}@keyframes dropdownSlide{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dropdown-header{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-4);background:var(--color-bg-tertiary)}.user-info{overflow:hidden}.user-fullname{font-weight:var(--font-semibold);color:var(--color-text-primary)}.user-email{font-size:var(--text-xs);color:var(--color-text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dropdown-divider{height:1px;background:var(--color-border);margin:0}.dropdown-item{display:flex;align-items:center;gap:var(--space-3);width:100%;padding:var(--space-3) var(--space-4);background:none;border:none;color:var(--color-text-secondary);font-size:var(--text-sm);cursor:pointer;transition:all var(--transition-fast);text-align:left}.dropdown-item:hover{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.dropdown-item.danger:hover{background:var(--color-error-bg);color:var(--color-error)}.dropdown-icon{display:flex;align-items:center;justify-content:center;width:20px}.dropdown-badge{margin-left:auto;padding:var(--space-1) var(--space-2);background:var(--color-bg-tertiary);border-radius:var(--radius-sm);font-size:var(--text-xs);text-transform:capitalize}.achievements-container{display:flex;flex-direction:column;gap:var(--space-4)}.achievement-summary{text-align:center;padding-top:var(--space-3);border-top:1px solid var(--color-border)}.achievement-progress{font-size:var(--text-sm);color:var(--color-text-secondary)}.achievement-badge{position:relative}.achievement-badge .badge-lock{position:absolute;top:-5px;right:-5px;font-size:.7rem;opacity:.8}.achievement-badge.unlocked{opacity:1}.badge-compact{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--color-bg-tertiary);border-radius:var(--radius-lg)}.badge-compact .badge-count{font-size:var(--text-xl);font-weight:var(--font-bold);color:var(--color-primary)}.badge-compact .badge-label{font-size:var(--text-sm);color:var(--color-text-muted)}.playground-container{padding:var(--space-6);max-width:1000px;margin:0 auto}.playground-header{margin-bottom:var(--space-6)}.playground-templates{display:flex;align-items:flex-start;gap:var(--space-2);flex-wrap:wrap}.template-buttons{display:flex;flex-wrap:wrap;gap:var(--space-2)}.template-btn{padding:var(--space-2) var(--space-3);background:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:var(--text-sm);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.template-btn:hover{background:var(--color-bg-card);border-color:var(--color-border-light);color:var(--color-text-primary)}.template-btn.active{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));border-color:var(--color-primary);color:#fff}.playground-editor{border-radius:var(--radius-xl);overflow:hidden}.playground-tips{display:flex;flex-wrap:wrap;gap:var(--space-3)}.tip-card{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--color-bg-tertiary);border-radius:var(--radius-lg);font-size:var(--text-sm);color:var(--color-text-secondary)}.tip-card kbd{padding:var(--space-1) var(--space-2);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:var(--text-xs)}.grid-desktop-3{display:grid;grid-template-columns:1fr;gap:var(--space-4)}@media (min-width: 768px){.grid-desktop-3{grid-template-columns:repeat(3,1fr)}}.analytics-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--space-5);background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);transition:all var(--transition-fast)}.analytics-card:hover{border-color:var(--color-primary);transform:translateY(-2px)}.analytics-icon{font-size:2rem;margin-bottom:var(--space-2)}.analytics-value{font-size:var(--text-3xl);font-weight:var(--font-bold);color:var(--color-text-primary)}.analytics-label{font-size:var(--text-sm);color:var(--color-text-secondary)}.time-estimate{text-align:center}.time-remaining{margin-bottom:var(--space-2)}.time-value{font-size:var(--text-2xl);font-weight:var(--font-bold);color:var(--color-primary)}.time-label{font-size:var(--text-base);color:var(--color-text-secondary)}.lessons-remaining{font-size:var(--text-sm);color:var(--color-text-muted)}.insight-card{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4);border-radius:var(--radius-xl)}.insight-card.success{background:var(--color-success-bg);border:1px solid rgba(16,185,129,.3)}.insight-card.warning{background:var(--color-warning-bg);border:1px solid rgba(245,158,11,.3)}.insight-icon{font-size:2rem}.insight-title{font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin-bottom:var(--space-1)}.insight-value{font-weight:var(--font-semibold);color:var(--color-text-primary)}.insight-desc{font-size:var(--text-sm);color:var(--color-text-secondary)}.lesson-notes{margin-bottom:var(--space-6);border-radius:var(--radius-xl);background:var(--color-bg-card);border:1px solid var(--color-border);overflow:hidden}.lesson-notes-header{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--space-3) var(--space-4);background:none;border:none;cursor:pointer;transition:background var(--transition-fast)}.lesson-notes-header:hover{background:var(--color-bg-tertiary)}.notes-header-content{display:flex;align-items:center;gap:var(--space-2)}.notes-icon{font-size:1.2rem}.notes-title{font-weight:var(--font-semibold);color:var(--color-text-primary)}.notes-badge{font-size:var(--text-xs);padding:var(--space-1) var(--space-2);background:var(--color-bg-tertiary);border-radius:var(--radius-full);color:var(--color-text-muted)}.notes-arrow{transition:transform var(--transition-fast);color:var(--color-text-muted)}.notes-arrow.open{transform:rotate(180deg)}.lesson-notes-content{padding:0 var(--space-4) var(--space-4)}.notes-textarea{width:100%;min-height:150px;padding:var(--space-3);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);color:var(--color-text-primary);font-size:var(--text-sm);line-height:1.6;resize:vertical;transition:border-color var(--transition-fast)}.notes-textarea:focus{outline:none;border-color:var(--color-primary)}.notes-textarea::placeholder{color:var(--color-text-muted)}.notes-footer{display:flex;align-items:center;justify-content:space-between;margin-top:var(--space-2)}.notes-status{font-size:var(--text-xs)}.notes-status.saved{color:var(--color-success)}.notes-status.saving{color:var(--color-warning)}html,body,#root,.app{height:auto!important;min-height:100vh!important;overflow-y:visible!important;overflow-x:hidden;position:static!important}.main-content{height:auto!important;min-height:0!important;flex:1;overflow:visible!important;padding-bottom:120px!important}.phases-grid{display:flex!important;flex-direction:column!important;gap:var(--space-4);height:auto!important;overflow:visible!important}@media (min-width: 768px){.phases-grid{display:grid!important;grid-template-columns:repeat(2,1fr)!important}}@media (min-width: 1280px){.phases-grid{grid-template-columns:repeat(3,1fr)!important}}