:root{--bg-color: #0b0e14;--panel-bg: rgba(22, 27, 34, .8);--accent-color: #58a6ff;--text-primary: #e6edf3;--text-secondary: #8b949e;--border-color: rgba(48, 54, 61, .8);--glass-effect: blur(12px) saturate(180%);--kafka-color: #ff9900;--spark-color: #e25a1c;--gcp-color: #4285f4;--glow-shadow: 0 0 20px rgba(88, 166, 255, .15)}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--bg-color)}::-webkit-scrollbar-thumb{background:#30363d;border-radius:10px;border:2px solid var(--bg-color)}::-webkit-scrollbar-thumb:hover{background:var(--accent-color)}*{box-sizing:border-box;margin:0;padding:0}html,body{overflow-x:hidden;width:100%}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-color);background-image:radial-gradient(at 0% 0%,rgba(88,166,255,.05) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(188,140,255,.05) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(88,166,255,.05) 0px,transparent 50%),radial-gradient(at 0% 100%,rgba(188,140,255,.05) 0px,transparent 50%);background-attachment:fixed;color:var(--text-primary);line-height:1.6;position:relative;overflow-wrap:break-word;word-wrap:break-word;word-break:break-word;-webkit-hyphens:auto;hyphens:auto}.app-container{max-width:1200px;margin:0 auto;padding:1rem}@media(min-width:768px){.app-container{padding:2rem}}h1,h2,h3,h4,h5,h6,p,li,span,div{max-width:100%;overflow-wrap:break-word}h1,h2,h3{font-weight:700;letter-spacing:-.02em}.home-header{text-align:center;margin-bottom:4rem;padding-top:2rem}.home-header h1{font-size:clamp(2rem,8vw,3.5rem);background:linear-gradient(90deg,#58a6ff,#bc8cff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:1rem;line-height:1.1}.home-header p{color:var(--text-secondary);font-size:clamp(1rem,3vw,1.25rem);max-width:600px;margin:0 auto}.themes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}@media(max-width:480px){.themes-grid{grid-template-columns:1fr}}.theme-card{background:var(--panel-bg);backdrop-filter:var(--glass-effect);-webkit-backdrop-filter:var(--glass-effect);border:1px solid var(--border-color);border-radius:16px;padding:2rem;transition:all .3s cubic-bezier(.4,0,.2,1);cursor:pointer;position:relative;overflow:hidden;text-decoration:none;color:inherit}.theme-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--accent-color);opacity:.5;transition:opacity .3s}.theme-card:hover{transform:translateY(-8px);border-color:var(--accent-color);box-shadow:0 12px 24px #0006}.theme-card:hover:before{opacity:1}.theme-card.highlight-kafka:before{background:var(--kafka-color)}.theme-card.highlight-spark:before{background:var(--spark-color)}.card-num{font-size:.9rem;color:var(--text-secondary);display:block;margin-bottom:.5rem;font-family:monospace}.card-title{font-size:1.5rem;margin-bottom:1rem}.card-desc{font-size:.95rem;color:var(--text-secondary)}.badge{display:inline-block;padding:.25rem .75rem;border-radius:20px;font-size:.75rem;font-weight:600;margin-top:1.5rem;background:#58a6ff1a;color:var(--accent-color);border:1px solid rgba(88,166,255,.2)}.badge.new{background:#ff99001a;color:var(--kafka-color);border-color:#f903}.theme-detail-wrapper{width:100%;max-width:100vw;min-height:100vh;overflow-x:hidden}.theme-detail-container{padding-bottom:4rem;width:100%}.back-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:8px;cursor:pointer;margin-bottom:1.5rem;transition:all .2s;font-size:.9rem}.back-btn:hover{border-color:var(--accent-color);color:var(--text-primary)}.detail-header{margin-bottom:2rem;padding-right:.5rem}.detail-header h2{font-size:clamp(1.5rem,6vw,2.5rem);margin:.5rem 0;line-height:1.2;word-wrap:break-word}.detail-content{display:block;width:100%}@media(min-width:1024px){.detail-content{grid-template-columns:1.5fr 1fr}}.info-card{background:var(--panel-bg);backdrop-filter:var(--glass-effect);-webkit-backdrop-filter:var(--glass-effect);border:1px solid var(--border-color);border-radius:20px;padding:1.25rem;margin-bottom:1.5rem;overflow-wrap:break-word;word-wrap:break-word;word-break:break-word;width:100%;min-width:0;box-shadow:0 4px 24px #0003;transition:transform .2s cubic-bezier(.175,.885,.32,1.275),box-shadow .2s ease,border-color .2s ease}.info-card:hover{border-color:#58a6ff66;box-shadow:var(--glow-shadow)}@media(min-width:768px){.info-card{padding:2rem;margin-bottom:2rem}}.info-card h3{margin-bottom:1.25rem;color:var(--accent-color);font-size:clamp(1.1rem,4vw,1.4rem);display:flex;align-items:center;gap:.5rem}.card-intro{color:var(--text-secondary);margin-bottom:1.5rem;font-size:.95rem}.section-image-container{width:100%;margin-bottom:2rem;border-radius:12px;overflow:hidden;border:1px solid var(--border-color);background:#0003;box-shadow:0 8px 32px #0000004d}.section-image{width:100%;height:auto;display:block;transition:transform .3s ease}.section-image:hover{transform:scale(1.02)}.svg-diagram{padding:1rem;background:#0006;display:flex;justify-content:center;align-items:center;overflow:hidden}.svg-diagram svg{max-width:100%;width:100%;height:auto;filter:drop-shadow(0 0 8px rgba(88,166,255,.2))}.code-card pre{background:#0006;padding:1rem;border-radius:8px;overflow-x:auto;border:1px solid var(--border-color);max-width:100%;white-space:pre}@media(min-width:768px){.code-card pre{padding:1.5rem}}.code-card code{font-family:Fira Code,Courier New,monospace;color:#a5d6ff;font-size:.85rem;display:block}.cheatsheet-grid{display:grid;gap:1rem}.cheatsheet-item{display:flex;flex-direction:column;padding:1.2rem;border-left:4px solid var(--accent-color);background:#ffffff05;border-radius:0 12px 12px 0;min-width:0;max-width:100%;transition:all .2s ease;border:1px solid transparent;border-left-width:4px;overflow-wrap:break-word;word-break:break-word}.cheatsheet-item:hover{background:#58a6ff14;transform:translate(4px);border-color:#58a6ff33}.cheatsheet-item strong{font-size:1.05rem;color:#fff;margin-bottom:.4rem;overflow-wrap:break-word;letter-spacing:.01em}.cheatsheet-item span{color:var(--text-secondary);font-size:.95rem;line-height:1.5;overflow-wrap:break-word}.video-wrapper{border-radius:12px;overflow:hidden;border:1px solid var(--border-color);aspect-ratio:16/9;background:#000}.no-details{color:var(--text-secondary);font-style:italic;margin-top:2rem}.architecture-img-main{width:100%;height:auto;border-radius:12px;border:1px solid var(--border-color);margin-top:1rem;box-shadow:0 10px 30px #00000080;transition:transform .3s ease}.architecture-img-main:hover{transform:scale(1.01)}.architecture-diagram-card{border-left:4px solid var(--accent-color)!important}.exam-warning-card{background:linear-gradient(135deg,#e74c3c1a,#c0392b33)!important;border:1px solid #e74c3c!important;box-shadow:0 0 15px #e74c3c33}.exam-warning-card h3{color:#e74c3c!important}.exam-warning-card .cheatsheet-item{border-left-color:#e74c3c!important;background:#e74c3c0d}.section-controls{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.control-btn{background:var(--panel-bg);-webkit-backdrop-filter:var(--glass-effect);backdrop-filter:var(--glass-effect);border:1px solid var(--border-color);color:var(--text-primary);padding:.6rem 1.2rem;border-radius:8px;cursor:pointer;transition:all .2s;font-size:.9rem}.control-btn:hover{border-color:var(--accent-color);background:#58a6ff1a}.detail-content.full-width{grid-template-columns:100%!important;width:100%;display:block}.detail-content.full-width .info-column{width:100%;margin:0}.info-card.collapsible{transition:all .3s ease}.section-header.clickable{cursor:pointer;display:flex;align-items:center;gap:.75rem;-webkit-user-select:none;user-select:none;transition:color .2s}.section-header.clickable:hover{color:#79c0ff}.toggle-icon{font-size:.8rem;transition:transform .2s;color:var(--text-secondary)}.section-body{animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.progress-bar-container{position:fixed;top:0;left:0;width:100%;height:6px;background:#ffffff08;z-index:2100;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent-color),#bc8cff,var(--accent-color));background-size:200% 100%;animation:shimmer 3s linear infinite;box-shadow:0 0 15px #58a6ffcc;transition:width .2s ease-out}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.detail-layout{display:block;width:100%;max-width:100%;margin-top:1rem;overflow-x:hidden}.main-content{width:100%;max-width:100%;overflow-x:hidden}.sidebar-nav{display:none}@media(min-width:1200px){.detail-layout{grid-template-columns:280px 1fr;align-items:start;margin-top:2rem;gap:3rem}.sidebar-nav{display:block;position:sticky;top:2rem;max-height:calc(100vh - 4rem);overflow-y:auto;padding-right:1rem;border-right:1px solid var(--border-color)}}.sidebar-nav h4{color:var(--text-secondary);font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:1rem}.sidebar-list{list-style:none;display:flex;flex-direction:column;gap:.5rem}.sidebar-item{color:var(--text-secondary);font-size:.9rem;padding:.5rem .75rem;border-radius:6px;text-decoration:none;transition:all .2s;cursor:pointer}.sidebar-item:hover{background:#58a6ff1a;color:var(--text-primary)}.sidebar-item.active{color:var(--accent-color);background:#58a6ff0d;font-weight:600}.info-card.important-card h3{color:#ffc107}.cheatsheet-item.warning-item{border-left-color:#ffc107;background:#ffc10714}.cheatsheet-item.warning-item strong{color:#ffc107}.info-card.analogy-card{border-color:#f906;background:linear-gradient(135deg,#ff990014,#ff64000d);position:relative;overflow:hidden;border-left:6px solid #ff9900}.info-card.analogy-card:before{content:"🏢";position:absolute;top:-10px;right:-10px;font-size:8rem;opacity:.08;pointer-events:none;filter:grayscale(1) invert(1)}.info-card.analogy-card h3{color:#f90}.info-card.analogy-card .cheatsheet-item{border-left-color:#f90;background:#ff990008}.info-card.analogy-card .cheatsheet-item:hover{background:#ff990014}.info-card.analogy-card .card-intro{color:#ffbd5c;font-weight:500;font-size:1.1rem;border-bottom:1px solid rgba(255,153,0,.1);padding-bottom:1rem}@media(min-width:768px){.detail-content.full-width .cheatsheet-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}}@media(min-width:1200px){.detail-content.full-width .cheatsheet-grid{grid-template-columns:repeat(3,1fr)}}.fade-in{animation:fadeIn .8s ease-out forwards}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}