.header{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 20px #0000001a;position:sticky;top:0;z-index:1000;padding:15px 0}.nav{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}.logo{display:flex;align-items:center;gap:12px;font-size:1.3rem;font-weight:800;color:var(--primary-color);transition:transform .3s ease}.logo:hover{transform:scale(1.05)}.logo-icon{font-size:2rem;animation:float 3s ease-in-out infinite}.logo-text{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.nav-links{display:flex;list-style:none;gap:5px;flex-wrap:wrap}.nav-links li a{padding:10px 20px;border-radius:25px;font-weight:600;color:var(--text-dark);transition:all .3s ease;display:block;font-size:.95rem}.nav-links li a:hover{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;transform:translateY(-2px);box-shadow:0 5px 15px #667eea66}.nav-links li a.active{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;box-shadow:0 5px 15px #667eea66}@media (max-width: 768px){.nav{flex-direction:column;align-items:stretch}.logo{justify-content:center;font-size:1.1rem}.nav-links{justify-content:center;gap:8px}.nav-links li a{padding:8px 16px;font-size:.9rem}}.home{padding-bottom:60px}.hero{padding:80px 0;background:linear-gradient(135deg,#667eeaf2,#764ba2f2);color:#fff;text-align:center}.hero-content{max-width:800px;margin:0 auto}.hero-title{font-size:3rem;margin-bottom:20px;line-height:1.2}.wave{display:inline-block;animation:wave 2s ease-in-out infinite}@keyframes wave{0%,to{transform:rotate(0)}25%{transform:rotate(20deg)}75%{transform:rotate(-20deg)}}.hero-subtitle{font-size:1.5rem;margin-bottom:15px;font-weight:600}.hero-description{font-size:1.1rem;opacity:.95;margin-bottom:40px}.hero-stats{display:flex;justify-content:center;gap:60px;flex-wrap:wrap}.stat{display:flex;flex-direction:column;align-items:center}.stat-number{font-size:3rem;font-weight:800;line-height:1;margin-bottom:8px}.stat-label{font-size:.95rem;opacity:.9}.languages-section{padding:80px 0}.section-title{text-align:center;font-size:2.5rem;color:#fff;margin-bottom:50px;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.languages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;max-width:1200px;margin:0 auto}.language-card{background:#fff;border-radius:20px;padding:40px 30px;box-shadow:var(--shadow);transition:all .3s ease;display:flex;flex-direction:column;align-items:center;text-align:center;animation:fadeIn .6s ease-in}.language-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-hover)}.language-icon{width:120px;height:120px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:20px;transition:transform .3s ease}.language-card:hover .language-icon{transform:scale(1.1)}.language-name{font-size:2rem;margin-bottom:15px}.language-description{color:#666;margin-bottom:15px;line-height:1.6;font-size:1rem}.language-level{padding:8px 20px;border-radius:20px;font-size:.85rem;font-weight:600;margin-bottom:25px}.learn-button{padding:12px 35px;border-radius:25px;color:#fff;font-weight:700;font-size:1rem;transition:all .3s ease;border:none;cursor:pointer}.learn-button:hover{transform:scale(1.05);box-shadow:0 5px 20px #0000004d}.features-section{padding:60px 0}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;max-width:1200px;margin:0 auto}.feature-card{background:#fffffff2;border-radius:20px;padding:40px 30px;text-align:center;box-shadow:var(--shadow);transition:transform .3s ease}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.feature-icon{font-size:4rem;margin-bottom:20px}.feature-card h3{font-size:1.5rem;color:var(--text-dark);margin-bottom:15px}.feature-card p{color:#666;line-height:1.6}@media (max-width: 768px){.hero{padding:50px 0}.hero-title{font-size:2rem}.hero-subtitle{font-size:1.2rem}.hero-stats{gap:30px}.stat-number{font-size:2rem}.section-title{font-size:1.8rem}.languages-section,.features-section{padding:40px 0}}.language-page{min-height:100vh;padding-bottom:60px}.page-header{padding:60px 0;background:linear-gradient(135deg,#667eeaf2,#764ba2f2);color:#fff;text-align:center}.header-content{max-width:800px;margin:0 auto}.header-icon{font-size:4rem;display:block;margin-bottom:20px;animation:float 3s ease-in-out infinite}.page-title{font-size:3rem;margin-bottom:15px}.page-subtitle{font-size:1.3rem;opacity:.95}.level-selector{display:flex;justify-content:center;gap:15px;margin:40px 0;flex-wrap:wrap}.level-button{padding:15px 35px;border-radius:30px;font-size:1.1rem;font-weight:700;background:#fff;color:var(--text-dark);transition:all .3s ease;box-shadow:0 4px 15px #0000001a}.level-button:hover{transform:translateY(-3px);box-shadow:0 6px 20px #00000026}.level-button.active{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;box-shadow:0 6px 20px #667eea66}.content-section{margin:40px 0}.level-title{text-align:center;font-size:2.2rem;color:#fff;margin-bottom:40px;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.topics-grid{display:grid;gap:30px;max-width:1200px;margin:0 auto}.topic-card{background:#fff;border-radius:20px;padding:35px;box-shadow:var(--shadow);transition:all .3s ease}.topic-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.topic-title{font-size:1.6rem;color:var(--primary-color);margin-bottom:15px}.topic-content{color:#555;line-height:1.8;margin-bottom:20px;font-size:1.05rem}.code-block{background:#2d3748;color:#e2e8f0;padding:25px;border-radius:12px;overflow-x:auto;font-family:Courier New,monospace;font-size:.95rem;line-height:1.6;direction:ltr;text-align:left;box-shadow:inset 0 2px 10px #0000004d}.code-block code{white-space:pre}.tips-section{margin:60px 0}.tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px;max-width:1200px;margin:0 auto}.tip-card{background:#fffffff2;border-radius:20px;padding:30px;text-align:center;box-shadow:var(--shadow);transition:transform .3s ease}.tip-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.tip-icon{font-size:3rem;display:block;margin-bottom:15px}.tip-card p{color:#555;line-height:1.6;font-size:1rem}.python-page .topic-title{color:var(--python-color)}.python-page .level-button.active{background:var(--python-color)}.cpp-page .topic-title{color:var(--cpp-color)}.cpp-page .level-button.active{background:var(--cpp-color)}.html-page .topic-title{color:var(--html-color)}.html-page .level-button.active{background:var(--html-color)}.css-page .topic-title{color:var(--css-color)}.css-page .level-button.active{background:var(--css-color)}.javascript-page .topic-title{color:#f0db4f}.javascript-page .level-button.active{background:var(--js-color);color:var(--text-dark)}@media (max-width: 768px){.page-header{padding:40px 0}.header-icon{font-size:3rem}.page-title{font-size:2rem}.page-subtitle{font-size:1.1rem}.level-selector{flex-direction:column;align-items:stretch;padding:0 20px}.level-button{width:100%}.level-title{font-size:1.8rem}.topic-card{padding:25px}.topic-title{font-size:1.4rem}.code-block{padding:20px;font-size:.85rem}}.code-playground{margin:20px 0;border:2px solid #e0e0e0;border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 4px 6px #0000001a}.code-section{background:#1e1e1e}.code-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#2d2d2d;border-bottom:1px solid #404040}.code-label{color:#fff;font-weight:600;font-size:14px}.code-actions{display:flex;gap:8px}.run-btn,.clear-btn{padding:6px 16px;border:none;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s ease}.run-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.run-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.run-btn:disabled{opacity:.6;cursor:not-allowed}.clear-btn{background:#f44336;color:#fff}.clear-btn:hover{background:#d32f2f;transform:translateY(-2px)}.code-content{margin:0;padding:20px;background:#1e1e1e;color:#d4d4d4;font-family:Consolas,Monaco,Courier New,monospace;font-size:14px;line-height:1.6;overflow-x:auto;direction:ltr;text-align:left}.code-content code{color:#d4d4d4}.input-section{padding:16px;background:#f8f9fa;border-bottom:1px solid #e0e0e0}.input-label{display:block;margin-bottom:8px;color:#333;font-weight:600;font-size:14px}.input-field{width:100%;padding:10px 12px;border:2px solid #ddd;border-radius:6px;font-size:14px;font-family:inherit;transition:border-color .3s ease}.input-field:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.output-section{background:#f8f9fa}.output-header{padding:12px 16px;background:#e8f5e9;border-bottom:1px solid #c8e6c9}.output-label{color:#2e7d32;font-weight:600;font-size:14px}.output-content{margin:0;padding:20px;background:#f8f9fa;color:#1e1e1e;font-family:Consolas,Monaco,Courier New,monospace;font-size:14px;line-height:1.6;min-height:60px;max-height:300px;overflow-y:auto;white-space:pre-wrap;word-wrap:break-word;border-bottom-left-radius:12px;border-bottom-right-radius:12px}@media (max-width: 768px){.code-header{flex-direction:column;gap:10px;align-items:stretch}.code-actions{justify-content:stretch}.run-btn,.clear-btn{flex:1}.code-content,.output-content{font-size:12px;padding:15px}}.app{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}main{min-height:calc(100vh - 80px)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Cairo,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;direction:rtl}#root{min-height:100vh}:root{--primary-color: #667eea;--secondary-color: #764ba2;--python-color: #3776ab;--cpp-color: #00599c;--html-color: #e34c26;--css-color: #264de4;--js-color: #f7df1e;--text-dark: #2d3748;--text-light: #ffffff;--card-bg: #ffffff;--shadow: 0 10px 40px rgba(0, 0, 0, .1);--shadow-hover: 0 15px 50px rgba(0, 0, 0, .15)}.container{max-width:1200px;margin:0 auto;padding:0 20px}button{cursor:pointer;border:none;outline:none;font-family:Cairo,sans-serif}a{text-decoration:none;color:inherit}h1,h2,h3,h4,h5,h6{font-weight:700}.animate-float{animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.animate-fade-in{animation:fadeIn .6s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.hover-scale{transition:transform .3s ease}.hover-scale:hover{transform:scale(1.05)}