*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:#2c1810;background:linear-gradient(135deg,#fff8f5,#ffeee6,#fff0e8);min-height:100vh}.loading-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#ff6b35,#f7931e);display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:9999;color:#fff}.loading-spinner{width:50px;height:50px;border:4px solid rgba(255,255,255,.3);border-top:4px solid white;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:20px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.container{max-width:1200px;margin:0 auto;padding:0 20px}.navbar,.dashboard-nav{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,107,53,.1);padding:1rem 0;position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center}.nav-brand{display:flex;align-items:center;gap:12px}.logo-icon{width:40px;height:40px;background:linear-gradient(135deg,#ff6b35,#f7931e);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px #ff6b354d}.brand-text{font-size:1.5rem;font-weight:700;color:#2c1810}.nav-actions{display:flex;align-items:center;gap:16px}.user-info{display:flex;align-items:center;gap:12px}.user-avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;border:2px solid #ff6b35}.user-name{font-weight:600;color:#2c1810}.btn{padding:12px 24px;border:none;border-radius:12px;font-weight:600;font-size:14px;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:linear-gradient(135deg,#ff6b35,#f7931e);color:#fff;box-shadow:0 4px 12px #ff6b354d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ff6b3566}.btn-outline{background:transparent;color:#ff6b35;border:2px solid #ff6b35}.btn-outline:hover{background:#ff6b35;color:#fff}.btn-success{background:linear-gradient(135deg,#28a745,#20c997);color:#fff}.btn-large{padding:16px 32px;font-size:16px}.btn-small{padding:8px 16px;font-size:12px}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}.hero{padding:80px 0;text-align:center;background:linear-gradient(135deg,#ff6b350d,#f7931e0d)}.hero-content{max-width:800px;margin:0 auto;padding:0 20px}.hero-badge{display:inline-block;background:#ff6b351a;color:#ff6b35;padding:8px 16px;border-radius:20px;font-size:14px;font-weight:600;margin-bottom:24px;border:1px solid rgba(255,107,53,.2)}.hero-title{font-size:3.5rem;font-weight:800;line-height:1.2;margin-bottom:24px;background:linear-gradient(135deg,#ff6b35,#f7931e);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-description{font-size:1.25rem;color:#666;margin-bottom:40px;line-height:1.6}.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.features{padding:80px 0}.section-header{text-align:center;margin-bottom:60px}.section-header h2{font-size:2.5rem;font-weight:700;color:#2c1810;margin-bottom:16px}.section-header p{font-size:1.125rem;color:#666;max-width:600px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px}.feature-card{background:#fff;padding:32px;border-radius:20px;box-shadow:0 4px 20px #00000014;border:1px solid rgba(255,107,53,.1);transition:all .3s ease}.feature-card:hover{transform:translateY(-8px);box-shadow:0 12px 40px #00000026}.feature-icon{font-size:3rem;margin-bottom:20px}.feature-card h3{font-size:1.25rem;font-weight:700;color:#2c1810;margin-bottom:12px}.feature-card p{color:#666;line-height:1.6}.dashboard-content{padding:40px 0}.welcome-section{text-align:center;margin-bottom:40px}.welcome-section h1{font-size:2.5rem;font-weight:700;color:#2c1810;margin-bottom:8px}.welcome-section p{font-size:1.125rem;color:#666}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px;margin-bottom:60px}.stat-card{background:#fff;padding:24px;border-radius:16px;box-shadow:0 4px 20px #00000014;border:1px solid rgba(255,107,53,.1);display:flex;align-items:center;gap:16px}.stat-icon{font-size:2rem;width:60px;height:60px;background:linear-gradient(135deg,#ff6b35,#f7931e);border-radius:12px;display:flex;align-items:center;justify-content:center}.stat-content{flex:1}.stat-value{font-size:2rem;font-weight:700;color:#2c1810;line-height:1}.stat-label{font-size:.875rem;color:#666;margin-top:4px}.courses-section,.leaderboard-section{margin-bottom:60px}.courses-section .section-header,.leaderboard-section .section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;text-align:left}.courses-section .section-header h2,.leaderboard-section .section-header h2{margin-bottom:0}.courses-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:24px}.course-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 20px #00000014;border:1px solid rgba(255,107,53,.1);transition:all .3s ease}.course-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px #0000001f}.course-icon{font-size:3rem;margin-bottom:16px}.course-title{font-size:1.25rem;font-weight:700;color:#2c1810;margin-bottom:8px}.course-description{color:#666;margin-bottom:16px;line-height:1.5}.course-meta{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.course-meta span{background:#ff6b351a;color:#ff6b35;padding:4px 8px;border-radius:6px;font-size:.75rem;font-weight:600}.course-actions{display:flex;justify-content:flex-end}.leaderboard{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 20px #00000014;border:1px solid rgba(255,107,53,.1)}.leaderboard-item{display:flex;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid rgba(0,0,0,.05)}.leaderboard-item:last-child{border-bottom:none}.rank{font-size:1.25rem;font-weight:700;color:#ff6b35;min-width:40px}.user-avatar{font-size:2rem;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#ff6b35,#f7931e)}.user-info{flex:1}.user-name{font-weight:600;color:#2c1810;margin-bottom:4px}.user-score{font-size:.875rem;color:#666}.medal{font-size:1.5rem}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:none;justify-content:center;align-items:center;z-index:1000}.modal-content{background:#fff;border-radius:20px;max-width:600px;width:90%;max-height:80vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.modal-header{padding:24px 24px 0;display:flex;justify-content:space-between;align-items:flex-start}.modal-header h2{font-size:1.5rem;font-weight:700;color:#2c1810;margin:0}.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#666;padding:0;width:30px;height:30px;display:flex;align-items:center;justify-content:center}.modal-body{padding:24px}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px}.quiz-progress{margin-top:16px}.quiz-progress-text{font-size:.875rem;color:#666;margin-bottom:8px;display:block}.progress-bar{width:100%;height:8px;background:#ff6b351a;border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(135deg,#ff6b35,#f7931e);transition:width .3s ease}.question{margin-bottom:24px}.question h3{font-size:1.25rem;font-weight:600;color:#2c1810;margin-bottom:20px}.options{display:flex;flex-direction:column;gap:12px}.option{display:flex;align-items:center;gap:12px;padding:16px;background:#ff6b350d;border:2px solid transparent;border-radius:12px;cursor:pointer;transition:all .3s ease}.option:hover{background:#ff6b351a;border-color:#ff6b3533}.option input[type=radio]{margin:0}.option label{flex:1;cursor:pointer;font-weight:500}.notification{position:fixed;top:20px;right:20px;background:#fff;border-radius:12px;padding:16px 20px;box-shadow:0 8px 30px #00000026;border-left:4px solid #ff6b35;z-index:10000;transform:translate(400px);opacity:0;transition:all .3s ease;max-width:400px}.notification.show{transform:translate(0);opacity:1}.notification-success{border-left-color:#28a745}.notification-error{border-left-color:#dc3545}.notification-content{display:flex;align-items:center;gap:12px}.notification-icon{font-size:1.25rem}.notification-message{font-weight:500;color:#2c1810}.course-modal{max-width:800px;max-height:90vh;overflow-y:auto}.course-navigation{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:15px;background:var(--accent);border-radius:10px}.nav-btn{background:var(--primary);color:#fff;border:none;padding:8px 16px;border-radius:5px;cursor:pointer;font-weight:500;transition:all .3s ease}.nav-btn:hover{background:var(--primary-dark);transform:translateY(-2px)}.note-counter{font-weight:600;color:var(--text);background:#fff;padding:5px 15px;border-radius:20px;box-shadow:0 2px 5px #0000001a}.course-content{background:#fff;padding:30px;border-radius:10px;box-shadow:0 2px 10px #0000001a;line-height:1.6;margin-bottom:20px}.course-content h2{color:var(--primary);margin-bottom:20px;font-size:1.8em;border-bottom:2px solid var(--accent);padding-bottom:10px}.course-content h3{color:var(--primary);margin:25px 0 15px;font-size:1.4em}.course-content h4{color:var(--primary-dark);margin:20px 0 10px;font-size:1.2em}.course-content p{margin-bottom:15px;color:var(--text)}.course-content ul,.course-content ol{margin:15px 0;padding-left:25px}.course-content li{margin-bottom:8px;color:var(--text)}.course-content strong{color:var(--primary);font-weight:600}.course-actions{text-align:center;padding:20px;background:var(--accent);border-radius:10px}.course-actions .btn{font-size:1.1em;padding:12px 30px;min-width:200px}.notes-section{background:#fff;border-radius:10px;padding:20px;margin-bottom:20px;box-shadow:0 2px 10px #0000001a}.notes-section h3{color:var(--primary);margin-bottom:15px;display:flex;align-items:center;gap:10px}.note-item{background:var(--accent);padding:15px;border-radius:8px;margin-bottom:10px;cursor:pointer;transition:all .3s ease;border-left:4px solid var(--primary)}.note-item:hover{background:var(--primary-light);transform:translate(5px)}.note-item h4{color:var(--primary);margin:0 0 5px;font-size:1.1em}.note-item p{color:var(--text);margin:0;font-size:.9em;opacity:.8}.quiz-section{background:linear-gradient(135deg,var(--primary-light),var(--accent));border-radius:10px;padding:20px;text-align:center;box-shadow:0 4px 15px #0000001a}.quiz-section h3{color:var(--primary);margin-bottom:10px}.quiz-section p{color:var(--text);margin-bottom:15px}.quiz-info{display:flex;justify-content:center;gap:20px;margin:15px 0;flex-wrap:wrap}.quiz-stat{background:#fff;padding:10px 15px;border-radius:20px;box-shadow:0 2px 5px #0000001a;font-size:.9em}.quiz-stat strong{color:var(--primary)}@media (max-width: 768px){.course-modal{max-width:95%;margin:20px auto}.course-navigation{flex-direction:column;gap:10px}.nav-btn{width:100%;max-width:150px}.course-content{padding:20px}.quiz-info{flex-direction:column;align-items:center}.quiz-stat{width:100%;max-width:200px;text-align:center}}@media (max-width: 768px){.hero-title{font-size:2.5rem}.hero-actions{flex-direction:column;align-items:center}.features-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.courses-grid{grid-template-columns:1fr}.courses-section .section-header,.leaderboard-section .section-header{flex-direction:column;gap:16px;text-align:center}.modal-content{width:95%;margin:20px}.modal-actions{flex-direction:column}}@media (max-width: 480px){.stats-grid{grid-template-columns:1fr}.hero-title{font-size:2rem}.nav-container,.container{padding:0 16px}}.page{animation:fadeIn .5s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}iframe[src*="telegram.org"]{border-radius:12px!important;box-shadow:0 4px 12px #ff6b354d!important}