@import url("https://fonts.googleapis.com/css2?family=Fredoka:wght@300;400;600&family=Nunito:wght@400;600;700&display=swap");:root{--primary:#2e86ab;--secondary:#f6f5ae;--accent:#f18f01;--text-color:#333;--bg-color:#fdfdfd;--sidebar-bg:#f4f9fc;--card-bg:#fff;--border-color:#e1e8ed;--border-radius:12px;--spacing:1.5rem;--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--nav-width:280px}[data-theme=dark]{--primary:#4aa3c9;--text-color:#e0e0e0;--bg-color:#121212;--sidebar-bg:#1e1e1e;--card-bg:#252525;--border-color:#333;--shadow:0 4px 6px -1px rgba(0,0,0,0.3)}*{box-sizing:border-box}body{margin:0;font-family:"Nunito",sans-serif;color:var(--text-color);background-color:var(--bg-color);line-height:1.6;transition:background-color .3s,color .3s}h1,h2,h3,h4,h5,h6{font-family:"Fredoka",sans-serif;margin-top:2rem;margin-bottom:1rem;color:var(--primary)}a{color:var(--primary);text-decoration:none;transition:opacity .2s}a:hover{opacity:.8}img{max-width:100%;border-radius:var(--border-radius)}.site-wrapper{display:flex;flex-direction:column;min-height:100vh}@media(min-width:768px){.site-wrapper{flex-direction:row}}.sidebar{background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);width:100%;padding:var(--spacing);flex-shrink:0;transition:background-color .3s}@media(min-width:768px){.sidebar{width:var(--nav-width);position:sticky;top:0;height:100vh;overflow-y:auto}}.sidebar .brand{font-family:"Fredoka",sans-serif;font-size:1.5rem;font-weight:600;color:var(--primary);margin-bottom:2rem;display:block}.sidebar .nav-list{list-style:none;padding:0;margin:0}.sidebar .nav-list ul{list-style:none;padding:0;margin:0}.sidebar .nav-list li{margin-bottom:.25rem}.sidebar .nav-list a{display:block;padding:.4rem .5rem;border-radius:8px;color:var(--text-color);opacity:.8;font-size:.95rem}.sidebar .nav-list a:hover,.sidebar .nav-list a.active{background-color:rgba(46,134,171,0.1);color:var(--primary);font-weight:700;opacity:1}.sidebar .nav-list .nav-children{padding-left:1rem;margin-top:.25rem}.sidebar .nav-list .nav-children a{font-size:.9rem;padding:.3rem .5rem}.sidebar .nav-list .nav-grandchildren{padding-left:1rem;margin-top:.2rem}.sidebar .nav-list .nav-grandchildren a{font-size:.85rem;padding:.25rem .5rem;opacity:.7}.main-content{flex-grow:1;padding:var(--spacing);max-width:100%}@media(min-width:1024px){.main-content{padding:3rem 5rem}}.main-content .container{max-width:900px;margin:0 auto}.hero-section{text-align:center;padding:4rem 1rem;background:linear-gradient(135deg,#e0f7fa 0%,#e1bee7 100%);border-radius:var(--border-radius);margin-bottom:3rem;color:#2c3e50}.hero-section .hero-title{font-size:2.5rem;color:#2c3e50;margin-bottom:1rem}.hero-section .hero-subtitle{font-size:1.2rem;margin-bottom:2rem}.hero-section .btn-hero-primary{display:inline-block;background:var(--primary);color:white;padding:1rem 2rem;border-radius:50px;font-weight:700;box-shadow:var(--shadow);margin:.5rem}.hero-section .btn-hero-primary:hover{transform:translateY(-2px);opacity:1}.hero-section .btn-hero-secondary{display:inline-block;background:white;color:var(--primary);padding:1rem 2rem;border-radius:50px;font-weight:700;box-shadow:var(--shadow);margin:.5rem}.hero-section .btn-hero-secondary:hover{transform:translateY(-2px);opacity:1}.hero-section .hero-stats{display:flex;justify-content:center;gap:2rem;margin-top:3rem;flex-wrap:wrap}.hero-section .hero-stats .stat-item{background:rgba(255,255,255,0.6);padding:1rem;border-radius:12px;min-width:120px}.hero-section .hero-stats .stat-item div:first-child{font-size:2rem;font-weight:700;color:var(--primary)}[data-theme=dark] .hero-section{background:linear-gradient(135deg,#1f3c4d 0%,#4a148c 100%);color:#fff}[data-theme=dark] .hero-section .hero-title{color:#fff}[data-theme=dark] .hero-section .stat-item{background:rgba(0,0,0,0.3)}[data-theme=dark] .hero-section .btn-hero-secondary{background:#333;color:#fff}.floating-icons{display:flex;justify-content:center;gap:1rem;margin-bottom:1rem;font-size:3rem}.floating-icons .bounce-on-hover{transition:transform .3s}.floating-icons .bounce-on-hover:hover{transform:scale(1.2) rotate(10deg)}.week-cards-container .week-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}.week-cards-container .week-card{background:var(--card-bg);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow);transition:transform .2s,background-color .3s}.week-cards-container .week-card:hover{transform:translateY(-5px)}.header-actions{position:absolute;top:1rem;right:1rem;z-index:100;display:flex;gap:.5rem}.theme-toggle-btn{background:var(--card-bg);border:1px solid var(--border-color);border-radius:50%;width:40px;height:40px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--text-color);box-shadow:var(--shadow)}.language-toggle{position:static}.language-toggle a{background:var(--card-bg);color:var(--text-color);padding:.5rem 1rem;border-radius:20px;font-size:.9rem;box-shadow:var(--shadow);border:1px solid var(--border-color);display:inline-block}footer{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--border-color);text-align:center;color:#888;font-size:.9rem}.content-body table{width:100%;border-collapse:collapse;margin:2rem 0}.content-body table th,.content-body table td{padding:.75rem;border:1px solid var(--border-color)}.content-body table th{background-color:var(--sidebar-bg);text-align:left}.content-body blockquote{border-left:4px solid var(--primary);margin:0;padding-left:1rem;color:var(--text-color);background:rgba(46,134,171,0.1);padding:1rem;border-radius:0 8px 8px 0}.content-body code{background:rgba(0,0,0,0.05);padding:.2rem .4rem;border-radius:4px;font-family:monospace;color:#d63384}[data-theme=dark] .content-body code{background:rgba(255,255,255,0.1);color:#ff80ab}.progress-tracker-container{background:var(--card-bg);padding:2rem;border-radius:var(--border-radius);box-shadow:var(--shadow);margin:2rem 0;text-align:center}.progress-tracker-container h3{margin-top:0}.progress-overview{display:flex;justify-content:space-around;margin:2rem 0}.progress-overview .progress-stat div:first-child{font-size:1.5rem;font-weight:700;color:var(--primary)}.progress-overview .progress-stat div:last-child{font-size:.9rem;color:#666}.progress-bar-container{background:#f0f0f0;border-radius:20px;overflow:hidden;height:20px;margin:1rem 0}.progress-bar-container.large{height:30px}.progress-bar-container .progress-bar{background:linear-gradient(90deg,var(--primary),var(--secondary));height:100%;transition:width .5s ease-out}[data-theme=dark] .progress-bar-container{background:#333}.achievements-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1rem;margin-top:2rem}.achievements-grid .achievement-badge{background:var(--sidebar-bg);padding:1rem;border-radius:12px;border:2px solid var(--border-color);opacity:.5;transition:all .3s}.achievements-grid .achievement-badge.unlocked{opacity:1;background:var(--card-bg);border-color:#ffd700;transform:scale(1.05);box-shadow:0 4px 10px rgba(255,215,0,0.2)}.achievements-grid .achievement-badge div:first-child{font-size:2rem;margin-bottom:.5rem}.achievements-grid .achievement-badge div:nth-child(2){font-weight:700;font-size:.9rem;margin-bottom:.3rem}.achievements-grid .achievement-badge div:last-child{font-size:.7rem;color:#888}