:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--primary-color: #667eea;--secondary-color: #764ba2;--accent-color: #4cc9f0;--dark-bg: #1a1a2e;--light-bg: #f5f5f5;--white: #ffffff;--text-primary: #333;--text-secondary: #666;--text-tertiary: #999;--border-color: #e5e7eb;--bg-card: #f9fafb;--color-success: #4cc9f0;--color-warning: #ffd166;--color-error: #ef476f;--color-info: #0066cc;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--font-size-xs: .75rem;--font-size-sm: .85rem;--font-size-base: .95rem;--font-size-md: 1rem;--font-size-lg: 1.1rem;--font-size-xl: 1.4rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 3rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 12px;--radius-2xl: 20px;--radius-pill: 50px;--radius-circle: 50%;--shadow-xs: 0 2px 8px rgba(0,0,0,.08);--shadow-sm: 0 2px 8px rgba(0,0,0,.1);--shadow-md: 0 4px 12px rgba(0,0,0,.15);--shadow-lg: 0 4px 16px rgba(0,0,0,.15);--shadow-xl: 0 8px 24px rgba(0,0,0,.15);--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease;--z-base: 1;--z-dropdown: 1000;--z-sticky: 1020;--z-modal: 1050;--z-tooltip: 1070}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f5;color:#333}.btn{padding:.75rem 2rem;border-radius:var(--radius-sm);text-decoration:none;font-weight:var(--font-weight-bold);transition:transform var(--transition-normal);cursor:pointer;border:none;font-family:inherit;display:inline-block}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--accent-color);color:var(--dark-bg)}.btn-secondary{background:transparent;color:var(--white);border:2px solid var(--white)}.btn-github,.btn-demo{padding:.8rem 1.5rem;border-radius:var(--radius-lg);text-decoration:none;font-weight:var(--font-weight-semibold);display:inline-flex;align-items:center;justify-content:center;gap:.5rem;transition:all var(--transition-normal);font-size:var(--font-size-base);flex:1}.btn-github{background:var(--dark-bg);color:var(--white)}.btn-github:hover{background:var(--text-primary);transform:translateY(-2px)}.btn-demo{background:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-demo:hover{background:var(--primary-color);color:var(--white);transform:translateY(-2px)}.btn-register{background:var(--primary-gradient);color:var(--white);border:none;padding:.7rem 1.5rem;border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);cursor:pointer;transition:transform var(--transition-normal)}.btn-register:hover{transform:scale(1.05)}.btn-read-more{background:transparent;color:var(--primary-color);border:2px solid var(--primary-color);padding:.4rem 1rem;font-size:.85rem;border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);cursor:pointer;transition:all var(--transition-normal);margin-bottom:0rem;align-self:flex-start}.btn-read-more:hover{background:var(--primary-color);color:var(--white)}.tag{background:var(--bg-card);color:var(--text-primary);padding:.4rem .8rem;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);display:inline-block}.project-status,.event-status,.resource-type,.difficulty-badge,.category-badge{padding:.4rem 1rem;border-radius:var(--radius-2xl);color:var(--white);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);text-transform:capitalize;white-space:nowrap}.hero-badge{display:inline-block;background:#fff3;padding:.5rem 1rem;border-radius:var(--radius-2xl);font-size:var(--font-size-sm);margin-bottom:var(--spacing-sm)}.loading-spinner{text-align:center;font-size:3rem;padding:var(--spacing-2xl);animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-message{background:#fee;border:2px solid #fcc;border-radius:var(--radius-lg);padding:var(--spacing-md);margin:var(--spacing-md) 0;color:#c33}.info-message{background:#e7f3ff;border:2px solid #b3d9ff;border-radius:var(--radius-lg);padding:var(--spacing-md);margin:var(--spacing-md) 0;color:var(--color-info)}.empty-state{text-align:center;padding:var(--spacing-2xl) var(--spacing-lg);color:var(--text-secondary);font-size:var(--font-size-lg)}.events-grid,.projects-grid,.blog-grid,.guides-grid,.resources-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:var(--spacing-lg);margin:var(--spacing-lg) auto;max-width:1200px}@media(min-width:1200px){.guides-grid,.resources-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:1100px){.guides-grid,.resources-grid,.blog-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.events-grid,.projects-grid,.blog-grid,.guides-grid,.resources-grid{grid-template-columns:1fr}}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-lg)}.featured-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(450px,1fr));gap:var(--spacing-lg);margin:0 auto var(--spacing-xl) auto;max-width:1200px}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}@media(max-width:768px){.nav-menu{flex-direction:column;gap:1rem}.hero h1{font-size:2rem}.hero p{font-size:1.2rem}.hero-buttons{flex-direction:column}.sandbox-hero h1{font-size:2.5rem}.events-grid,.projects-grid,.blog-grid,.guides-grid,.resources-grid{grid-template-columns:1fr}.featured-grid:not(.sandbox-featured-section .featured-grid){grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.main-content{padding:0}.page:not(.sandbox-page){padding:1.5rem}.glossary-header h1{font-size:2rem}.glossary-controls{flex-direction:column;align-items:stretch}.search-bar{min-width:100%}.filter-group{width:100%}.filter-group select{flex:1}.letter-nav{gap:.3rem}.letter-link{width:32px;height:32px;font-size:.85rem}.term-header{flex-direction:column;align-items:flex-start}.term-title{font-size:1.2rem}.project-card,.event-card,.blog-card,.member-card,.guide-card,.resource-card{padding:1.25rem}.project-buttons,.hero-buttons{flex-direction:column}.btn-github,.btn-demo{width:100%}.sandbox-tabs-container{flex-direction:row;width:100%;max-width:400px}.tab-button{padding:.75rem 1.5rem;font-size:.95rem;flex:1}}@media(max-width:480px){.hero h1{font-size:1.75rem}.hero p{font-size:1rem}.sandbox-hero h1{font-size:2rem}.sandbox-hero p{font-size:1rem}.main-content{padding:0}.page:not(.sandbox-page){padding:1rem}.project-card,.event-card,.blog-card,.member-card,.guide-card,.resource-card,.term-card{padding:1rem}.stats-grid{grid-template-columns:1fr}.project-title,.event-title,.blog-title,.member-name{font-size:1.2rem}.logo-text h1{font-size:1.1rem}.logo-text p{font-size:.75rem}.nav-container{padding:0 1rem}.search-input,.search-bar input,.resources-search input{font-size:.95rem;padding:.75rem 1rem}.member-avatar{width:100px;height:100px;font-size:2.5rem}.project-tags,.guide-tags,.member-skills{gap:.3rem}.tag,.project-tag{padding:.3rem .6rem;font-size:.8rem}}@media(min-width:1280px){.nav-container{max-width:1600px}.main-content{max-width:none}.featured-grid{grid-template-columns:repeat(auto-fit,minmax(500px,1fr))}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}}.navbar{background:#fff;color:#333;padding:1rem 0;box-shadow:0 2px 8px #0000000f;position:sticky;top:0;z-index:1000;border-top:4px solid #182F4D}.nav-container{max-width:1400px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center;position:relative}.nav-logo{display:flex;align-items:center;gap:1rem;text-decoration:none;color:inherit;z-index:1001}.navbar-logo-img{height:60px;width:auto;object-fit:contain}.logo-text h1{color:#182f4d;font-size:1.3rem;margin:0;font-weight:800;letter-spacing:-.5px}.logo-text p{color:#4a4a4a;font-size:.85rem;margin:0;font-weight:500}.menu-icon{display:none;cursor:pointer;color:#182f4d;z-index:1001}.nav-menu{display:flex;list-style:none;gap:.5rem;align-items:center;margin:0;padding:0}.nav-menu>li{position:relative}.nav-link{display:flex;align-items:center;gap:.5rem;color:#182f4d;text-decoration:none;padding:.7rem 1rem;border-radius:8px;transition:all .2s;font-size:.95rem;font-weight:600;background:none;border:none;cursor:pointer;font-family:inherit}.nav-link:hover{background:#f5f5f2;color:#df694e}.nav-link svg{flex-shrink:0;transition:color .2s ease}.nav-link.active{font-weight:700;color:#fff;background:linear-gradient(135deg,#374b66,#182f4d);border-radius:8px;box-shadow:0 4px 6px -1px #182f4d33}.nav-link.active svg{color:#fff}.nav-link.active:hover{background:linear-gradient(135deg,#4a5d7e,#2a4066);transform:translateY(-1px)}.dropdown{position:relative}.dropdown-toggle{display:flex;align-items:center;gap:.4rem}.dropdown-menu{position:absolute;top:100%;right:0;background:#fff;border-radius:8px;box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;min-width:180px;padding:.5rem 0;list-style:none;margin-top:.5rem;border:1px solid #f3f4f6;animation:dropdownFade .2s ease;z-index:1002}@keyframes dropdownFade{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dropdown-menu li{width:100%}.dropdown-menu a{display:block;padding:.7rem 1.2rem;color:#182f4d;text-decoration:none;transition:all .2s;font-weight:500}.dropdown-menu a:hover{background:#f5f5f2;color:#df694e}@media(max-width:1024px){.nav-menu{gap:.2rem}.nav-link span,.logo-text p{display:none}.dropdown-toggle svg:last-child{display:none}.nav-link{padding:.7rem;justify-content:center}}@media(max-width:768px){.nav-container{padding:0 1rem;height:70px}.navbar-logo-img{height:35px}.logo-text h1{font-size:1rem}.menu-icon{display:block}.nav-menu{display:flex;flex-direction:column;align-items:flex-start;position:fixed;top:70px;left:-100%;width:100%;height:calc(100vh - 70px);background:#fff;transition:left .3s ease-in-out;padding:1rem 0;overflow-y:auto;box-shadow:0 4px 6px #0000001a}.nav-menu.active{left:0}.nav-menu>li{width:100%;padding:.25rem 1rem}.nav-link span{display:inline-block;margin-left:1rem}.dropdown-toggle svg:last-child{display:block;margin-left:.5rem}.nav-link{display:inline-flex;align-items:center;gap:.5rem;width:auto;justify-content:flex-start;padding:1rem 1.5rem;margin:0;border-radius:8px}.dropdown-menu{position:relative;top:0;box-shadow:none;background:transparent;border:none;width:auto;padding:.5rem 0 .5rem 2rem;list-style:none;margin-left:1rem;animation:none}.dropdown-menu li{width:auto;display:block}.dropdown-menu a{display:inline-flex;align-items:center;width:auto;padding:.65rem 1.2rem;margin:.15rem 0;background:#fff;color:#182f4d;text-decoration:none;transition:all .2s;font-weight:500;font-size:.9rem;border-radius:6px;border:1px solid #e5e7eb;box-shadow:0 1px 2px #0000000d}.dropdown-menu a:hover{background:#df694e;color:#fff;border-color:#df694e;transform:translate(4px);box-shadow:0 2px 4px #df694e33}.dropdown-menu a.active{background:linear-gradient(135deg,#df694e,#c55a3e);color:#fff;border-color:#df694e;font-weight:600;box-shadow:0 2px 4px #df694e4d}}.footer-container{width:100%;background:#0f172a!important;color:#e2e8f0;padding:2rem 1.5rem;display:flex;flex-direction:column;gap:2rem}.footer-content-wrapper{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:flex-start;gap:2rem;flex-wrap:wrap}.footer-col{display:flex;flex-direction:column;gap:.5rem;min-width:180px}.footer-brand{max-width:270px}.footer-logo{width:80px;border-radius:6px;margin-bottom:.5rem}.footer-title{font-size:1.6rem;font-weight:800;color:#fff}.footer-description{font-size:.95rem;color:#cbd5e1;line-height:1.4}.footer-heading{font-size:1.2rem;font-weight:700;color:#f8fafc;margin-bottom:.4rem}.footer-col ul{list-style:none;padding:0;margin:0}.footer-col a{color:#cbd5e1;text-decoration:none;font-size:.95rem;transition:.2s ease}.footer-col a:hover{color:#fff}.footer-socials a{display:flex;align-items:center;gap:.5rem}.footer-join-btn{background:#df694e;padding:.7rem 1rem;border-radius:8px;font-weight:600;color:#fff;text-align:center;transition:.2s;box-shadow:0 4px 12px #df694e59}.footer-join-btn:hover{background:#c7573f}.footer-bottom{text-align:center;padding-top:1rem;border-top:1px solid #1e293b;color:#94a3b8}@media(max-width:900px){.footer-content-wrapper{justify-content:center;text-align:left}}@media(max-width:520px){.footer-content-wrapper{flex-direction:column;align-items:center;text-align:center}.footer-socials a{justify-content:center}}.scroll-to-top-btn{position:fixed;bottom:2rem;right:2rem;width:50px;height:50px;border-radius:50%;border:none;background:linear-gradient(135deg,#df694e,#ebb479);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transform:translateY(20px);pointer-events:none;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 15px #df694e66;z-index:9999}.scroll-to-top-btn.visible{opacity:1;transform:translateY(0);pointer-events:auto}.scroll-to-top-btn:hover{transform:translateY(-4px);box-shadow:0 6px 20px #df694e99;background:linear-gradient(135deg,#c5533a,#d89f63)}@media(max-width:768px){.scroll-to-top-btn{bottom:1.5rem;right:1.5rem;width:44px;height:44px}}html{scroll-behavior:smooth}.app{min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}.main-content{flex:1;width:100%;padding:0;margin:0}@media(max-width:768px){.main-content{padding:0}}