@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Inter:wght@400;500;600&display=swap";:root{--bg-color: #ffffff;--surface-color: #f8fafc;--btn-surface-color: #d0d9e1;--text-primary: #0f172a;--text-secondary: #64748b;--border-color: #e2e8f0;--accent-blue-50: #eff6ff;--accent-blue-100: #dbeafe;--accent-blue-500: #3b82f6;--accent-blue-600: #2563eb;--accent-blue-700: #1d4ed8;--xp-color: #f59e0b;--streak-color: #ef4444;--font-heading: "Outfit", sans-serif;--font-body: "Inter", sans-serif;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-hover: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--transition: all .3s cubic-bezier(.4, 0, .2, 1)}.dark-theme{--bg-color: #0b1120;--surface-color: #1e293b;--text-primary: #f8fafc;--text-secondary: #94a3b8;--border-color: #334155;--accent-blue-50: 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var(--border-color);position:sticky;top:0;z-index:100;display:flex;align-items:center}.header-content{display:flex;justify-content:space-between;align-items:center}.header-left{display:flex;align-items:center;gap:32px}.logo{font-family:var(--font-heading);font-size:1.25rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:8px}.logo span{color:var(--accent-blue-500)}.nav-links{display:flex;gap:24px}.nav-link{font-weight:500;font-size:.95rem;color:var(--text-secondary);position:relative}.nav-link:hover,.nav-link.active{color:var(--accent-blue-600)}.nav-link:after{content:"";position:absolute;bottom:-4px;left:0;width:0%;height:2px;background-color:var(--accent-blue-500);transition:var(--transition)}.nav-link:hover:after,.nav-link.active:after{width:100%}.header-right{display:flex;align-items:center;gap:16px}.header-actions-wrapper{display:flex;align-items:center;gap:32px}.mobile-menu-btn{display:none;background:transparent;color:var(--text-primary);border:none;cursor:pointer}@media(max-width:1024px){.header-actions-wrapper{position:absolute;top:72px;left:0;right:0;background-color:var(--surface-color);flex-direction:column;align-items:flex-start;padding:24px;gap:24px;border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-md);display:none}.header-actions-wrapper.mobile-open{display:flex}.nav-links{flex-direction:column;width:100%;gap:16px}.header-right{flex-direction:column;align-items:flex-start;width:100%;gap:24px}.mobile-menu-btn{display:block}.user-stats{width:100%;justify-content:space-between}.profile-border{border-left:none!important;padding-left:0!important}}.theme-toggle{width:48px;height:24px;background-color:var(--surface-color);border:1px solid var(--border-color);border-radius:12%;position:relative;cursor:pointer;display:flex;align-items:center;box-shadow:inset 0 2px 4px #0000000d}.theme-toggle-switch{width:18px;height:18px;background-color:var(--accent-blue-500);border-radius:12%;position:absolute;left:3px;transition:transform .3s cubic-bezier(.4,0,.2,1)}.dark-theme .theme-toggle-switch{transform:translate(24px);background-color:var(--accent-blue-400)}.user-stats{display:flex;gap:16px;padding:6px 16px;background-color:var(--surface-color);border-radius:var(--radius-full);border:1px solid var(--border-color);font-size:.85rem;font-weight:600}.stat-item{display:flex;align-items:center;gap:6px}.stat-xp{color:var(--xp-color)}.stat-streak{color:var(--streak-color)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--radius-md);font-weight:600;font-size:.95rem;text-align:center;transition:var(--transition);gap:8px}.btn-primary{background:linear-gradient(135deg,var(--accent-blue-500),var(--accent-blue-600));color:#fff;box-shadow:0 4px 14px #2563eb63}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #2563eb66}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border-color)}.btn-outline:hover{border-color:var(--accent-blue-500);color:var(--accent-blue-600);background-color:var(--accent-blue-50)}.card{background:var(--surface-color);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;transition:var(--transition)}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent-blue-500)}.profile-dropdown{position:relative}.profile-avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;border:2px solid var(--accent-blue-500);cursor:pointer}.main-content{flex:1}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-4{gap:1rem}.gap-2{gap:.5rem}.hero-section{text-align:center;padding:80px 24px}.hero-title{font-size:3rem;font-weight:700;margin-bottom:24px}.hero-title span{color:var(--accent-blue-500)}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:40px;max-width:672px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;justify-content:center;gap:16px}.btn-large{padding:14px 32px;font-size:1.1rem}.features-section{padding:64px 0;background-color:var(--surface-color);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.features-header{text-align:center;margin-bottom:48px}.features-header h2{font-size:1.875rem;margin-bottom:16px}.features-header p{color:var(--text-secondary)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.feature-card{text-align:center;position:relative;overflow:hidden}.feature-icon{display:flex;justify-content:center;margin-bottom:16px}.icon-blue{color:var(--accent-blue-500)}.icon-purple{color:#a855f7}.icon-red{color:var(--streak-color)}.icon-darkblue{color:var(--accent-blue-600)}.icon-green{color:#22c55e}.feature-badge{position:absolute;top:8px;right:8px;background:linear-gradient(to right,#a855f7,#ec4899);color:#fff;font-size:.75rem;font-weight:700;padding:4px 8px;border-radius:var(--radius-full);box-shadow:var(--shadow-sm);z-index:10}.feature-card h3{font-size:1.25rem;margin-bottom:12px}.feature-card p{color:var(--text-secondary)}.login-page{padding:80px 24px;display:flex;justify-content:center;align-items:center;min-height:calc(100vh - 72px)}.login-card{width:100%;max-width:400px}.login-title{font-size:1.5rem;text-align:center;margin-bottom:24px}.login-error{background-color:#fee2e2;color:#b91c1c;padding:12px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:.875rem}.dark-theme .login-error{background-color:#450a0a;color:#fca5a5}.login-form{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}.form-group label{display:block;font-size:.875rem;font-weight:500;margin-bottom:4px;color:var(--text-secondary)}.form-input{width:100%;padding:8px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background-color:var(--bg-color);color:var(--text-primary);outline:none;transition:border-color .2s}.form-input:focus{border-color:var(--accent-blue-500)}.submit-btn{width:100%;margin-top:8px}.login-divider{position:relative;display:flex;align-items:center;justify-content:center;padding:16px 0}.divider-line{position:absolute;width:100%;border-top:1px solid var(--border-color)}.login-divider span{background-color:var(--surface-color);padding:0 16px;font-size:.875rem;color:var(--text-secondary);position:relative;z-index:10}.provider-login{display:flex;flex-direction:column;gap:12px;margin-top:16px}.provider-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:8px}.login-footer{text-align:center;margin-top:24px;font-size:.875rem}.login-footer span{color:var(--text-secondary)}.toggle-login-btn{color:var(--accent-blue-500);font-weight:500;margin-left:8px}@media(max-width:1024px){.hero-section{padding:60px 16px}.hero-title{font-size:2.5rem}}@media(max-width:768px){.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem;margin-bottom:24px}.hero-actions{flex-direction:column;padding:0 16px}.features-section{padding:40px 0}.login-card{padding:0 16px}.btn-large{padding:12px 24px;width:100%}}@media(max-width:480px){.hero-title{font-size:1.75rem}}.footer{background:linear-gradient(270deg,var(--accent-blue-50),#e0e7ff,var(--surface-color));background-size:600% 600%;animation:gradientAnimation 12s ease infinite;border-top:1px solid var(--border-color);padding-top:64px;margin-top:auto}.dark-theme .footer{background:linear-gradient(270deg,var(--surface-color),var(--accent-blue-100),#0f172a);background-size:600% 600%;animation:gradientAnimation 12s ease infinite}@keyframes gradientAnimation{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}.footer-content{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}.footer-logo{margin-bottom:16px}.footer-description{color:var(--text-secondary);font-size:.95rem;margin-bottom:24px;line-height:1.6;max-width:300px}.social-links{display:flex;gap:16px}.social-links a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background-color:var(--bg-color);border:1px solid var(--border-color);color:var(--text-secondary);transition:var(--transition)}.social-links a:hover{background-color:var(--accent-blue-50);color:var(--accent-blue-600);border-color:var(--accent-blue-300);transform:translateY(-2px)}.dark-theme .social-links a:hover{background-color:var(--accent-blue-100)}.footer-heading{font-size:1.1rem;margin-bottom:20px;color:var(--text-primary)}.footer-links{list-style:none;display:flex;flex-direction:column;gap:12px}.footer-links a{color:var(--text-secondary);font-size:.95rem;transition:var(--transition)}.footer-links a:hover{color:var(--accent-blue-500)}.footer-bottom{padding:24px 0;border-top:1px solid var(--border-color);text-align:center;color:var(--text-secondary);font-size:.875rem}@media(max-width:1024px){.footer-content{grid-template-columns:1fr 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h1{font-size:3.5rem;font-weight:800;line-height:1.15;margin-bottom:20px;animation:fadeInUp .7s ease;letter-spacing:-.02em}.home-hero h1 span{background:linear-gradient(135deg,#3b82f6,#8b5cf6,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.home-hero-sub{font-size:1.15rem;color:var(--text-secondary);max-width:620px;margin:0 auto 36px;line-height:1.7;animation:fadeInUp .8s ease}.home-hero-actions{display:flex;justify-content:center;gap:14px;animation:fadeInUp .9s ease;margin-bottom:50px}.home-hero-btn{padding:14px 32px;border-radius:14px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;gap:8px;text-decoration:none}.home-hero-btn.primary{background:linear-gradient(135deg,#3b82f6,#6366f1);color:#fff;border:none;box-shadow:0 4px 16px #3b82f659}.home-hero-btn.primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px 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p{font-size:.85rem;color:var(--text-secondary);line-height:1.6;flex:1}.home-feature-badge{display:inline-flex;padding:3px 10px;border-radius:9999px;font-size:.65rem;font-weight:700;background:#22c55e1a;color:#22c55e;border:1px solid rgba(34,197,94,.2);margin-bottom:12px;width:fit-content}.home-big-stats{padding:70px 24px;background:linear-gradient(135deg,#3b82f6,#8b5cf6,#ec4899);text-align:center;position:relative}.home-big-stats:after{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none}.home-big-stats-inner{position:relative;z-index:1}.home-big-stats 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var(--border-color);border-radius:18px;padding:28px}.home-testimonial-quote{font-size:.92rem;font-style:italic;line-height:1.7;color:var(--text-secondary);margin-bottom:16px}.home-testimonial-quote:before{content:'"';font-size:2rem;font-weight:800;color:var(--accent-blue-500);line-height:0;vertical-align:-.4em;margin-right:4px}.home-testimonial-author{display:flex;align-items:center;gap:12px}.home-testimonial-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;color:#fff}.home-testimonial-name{font-size:.85rem;font-weight:700}.home-testimonial-role{font-size:.72rem;color:var(--text-secondary)}.home-cta{padding:70px 24px;text-align:center;background:var(--surface-color);border-top:1px solid var(--border-color)}.home-cta-inner{max-width:600px;margin:0 auto}.home-cta h2{font-size:2rem;font-weight:800;margin-bottom:14px}.home-cta 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.15s;cursor:default}.heatmap-cell.level-1{background:#22c55e33;border-color:#22c55e4d}.heatmap-cell.level-2{background:#22c55e66;border-color:#22c55e80}.heatmap-cell.level-3{background:#22c55e99;border-color:#22c55eb3}.heatmap-cell.level-4{background:#22c55e;border-color:#16a34a}.heatmap-cell:hover{transform:scale(1.3);z-index:1}.heatmap-legend{display:flex;align-items:center;justify-content:flex-end;gap:4px;margin-top:10px;font-size:.65rem;color:var(--text-secondary)}.heatmap-legend-cell{width:12px;height:12px;border-radius:2px}.achievements-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.achievement-item{background:var(--bg-color);border:1px solid var(--border-color);border-radius:14px;padding:16px;text-align:center;transition:all .3s;position:relative}.achievement-item.unlocked{border-color:#a855f74d}.achievement-item.unlocked:hover{transform:translateY(-3px);box-shadow:0 8px 20px #a855f726}.achievement-item.locked{opacity:.45;filter:grayscale(.6)}.achievement-item-icon{font-size:2rem;margin-bottom:8px}.achievement-item h4{font-size:.78rem;font-weight:700;margin-bottom:2px}.achievement-item p{font-size:.65rem;color:var(--text-secondary)}.achievement-item .achievement-date{font-size:.6rem;color:var(--accent-blue-500);margin-top:4px;font-weight:600}.xp-breakdown-list{display:flex;flex-direction:column;gap:12px}.xp-breakdown-row{display:flex;align-items:center;gap:12px}.xp-breakdown-label{font-size:.82rem;font-weight:600;min-width:90px}.xp-breakdown-bar-bg{flex:1;height:10px;background:var(--bg-color);border-radius:5px;overflow:hidden}.xp-breakdown-bar-fill{height:100%;border-radius:5px;transition:width 1s 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10px;border-radius:9999px;font-size:.7rem;font-weight:600;background:#3b82f61a;color:var(--accent-blue-500);border:1px solid rgba(59,130,246,.2)}.roadmap-tags{display:flex;flex-wrap:wrap;gap:8px}.roadmap-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:9999px;font-size:.78rem;font-weight:600;background:#3b82f614;color:var(--accent-blue-500);border:1px solid rgba(59,130,246,.15);transition:all .2s}.roadmap-tag:hover{background:#3b82f626}.profile-empty-state{text-align:center;padding:32px 20px;border:2px dashed var(--border-color);border-radius:14px}.profile-empty-state p{color:var(--text-secondary);font-size:.85rem;margin-bottom:12px}.profile-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}.profile-layout-full{grid-column:1 / -1}@media(max-width:768px){.profile-banner-content{flex-direction:column;align-items:center;text-align:center;padding:0 20px 24px}.profile-info{align-items:center;display:flex;flex-direction:column}.profile-meta-row{justify-content:center}.profile-stats-grid{grid-template-columns:repeat(2,1fr)}.profile-layout{grid-template-columns:1fr}.streak-week{gap:6px}.streak-day-circle{width:38px;height:38px;font-size:.7rem}.achievements-gallery{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.profile-stats-grid{grid-template-columns:1fr 1fr;gap:10px}.profile-stat-card{padding:14px;flex-direction:column;text-align:center;gap:8px}.profile-avatar-large,.profile-avatar-placeholder{width:96px;height:96px}.profile-banner-bg{height:120px}}.community-page{min-height:calc(100vh - 80px);display:flex;justify-content:center;align-items:center;padding:60px 20px;background:radial-gradient(circle at center,var(--bg-card) 0%,var(--bg-default) 100%)}.construction-container{max-width:600px;text-align:center;padding:50px 40px;background-color:var(--bg-card);border-radius:20px;box-shadow:0 15px 35px #0003;border:1px solid var(--border-color);position:relative;overflow:hidden}.construction-container:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color))}.animated-icons{display:flex;justify-content:center;align-items:center;gap:20px;margin-bottom:30px;color:var(--primary-color)}.spin-icon{animation:spin 6s linear infinite}.spin-icon.slow{animation-duration:8s;color:var(--secondary-color)}.spin-icon.reverse{animation-direction:reverse;animation-duration:5s;color:#f39c12}.bounce-icon{animation:bounce 2s ease-in-out infinite;color:var(--text-secondary)}.construction-title{font-size:3rem;font-weight:800;margin-bottom:20px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.construction-message{display:flex;align-items:center;justify-content:center;gap:15px;margin-bottom:20px;background-color:#f39c121a;padding:15px;border-radius:10px;border-left:4px solid #f39c12}.hardhat-icon{color:#f39c12}.construction-message h2{font-size:1.2rem;color:var(--text-primary);margin:0}.construction-subtitle{font-size:1.1rem;color:var(--text-secondary);line-height:1.6;margin-bottom:40px}.progress-bar-container{width:100%}.progress-bar{height:12px;background-color:var(--bg-default);border-radius:10px;overflow:hidden;margin-bottom:10px;border:1px solid var(--border-color)}.progress-fill{height:100%;width:45%;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color));border-radius:10px;position:relative;overflow:hidden}.progress-fill:after{content:"";position:absolute;inset:0;background-image:linear-gradient(-45deg,rgba(255,255,255,.2) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.2) 50%,rgba(255,255,255,.2) 75%,transparent 75%,transparent);background-size:30px 30px;animation:moveStripes 2s linear infinite}.progress-text{font-size:.9rem;color:var(--text-secondary);font-weight:500}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-15px)}}@keyframes moveStripes{0%{background-position:0 0}to{background-position:30px 0}}@media(max-width:768px){.construction-title{font-size:2.2rem}.construction-message{flex-direction:column;text-align:center}}