@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap";:root{--font-heading:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-main:#0f1219;--bg-card:#171b26b3;--bg-card-hover:#1f2433d9;--border-color:#292e3d66;--border-color-glow:#0ff6;--text-primary:#f5f5f5;--text-secondary:#a7adbe;--text-muted:#737a8c;--accent-cyan:#0ff;--accent-purple:#a651fb;--accent-emerald:#1ae66f;--accent-amber:#f9b11f;--accent-rose:#f53d5c;--gradient-primary:linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));--gradient-emerald:linear-gradient(135deg, var(--accent-emerald), #0c8);--gradient-card:linear-gradient(145deg, #1b202d99, #11141dcc);--glow-cyan:0 0 15px #00ffff40;--glow-purple:0 0 15px #a651fb40;--shadow-soft:0 10px 30px -10px #00000080;--transition-smooth:all .3s cubic-bezier(.25, .8, .25, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-primary);font-family:var(--font-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:radial-gradient(circle at 10% 20%,#a651fb0d 0%,#0000 40%),radial-gradient(circle at 90% 80%,#00ffff0d 0%,#0000 40%);min-height:100vh;line-height:1.6;overflow-x:hidden}.app-container{flex-direction:column;min-height:100vh;display:flex}.main-content{flex-grow:1;width:100%;max-width:1200px;margin:0 auto;padding:2.5rem 1.5rem;animation:.6s ease-out fadeIn}.app-header{z-index:100;-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);background-color:#0f1219cc;padding:1rem 2rem;position:sticky;top:0}.nav-content{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;display:flex}.logo-container{align-items:center;gap:.75rem;text-decoration:none;display:flex}.logo-icon{background:var(--gradient-primary);width:36px;height:36px;font-family:var(--font-heading);color:var(--bg-main);box-shadow:var(--glow-cyan);border-radius:8px;justify-content:center;align-items:center;font-size:1.25rem;font-weight:800;display:flex}.logo-text{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.5px;font-size:1.5rem;font-weight:700}.logo-accent{background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.nav-links{gap:1.5rem;display:flex}.nav-link{color:var(--text-secondary);transition:var(--transition-smooth);border:1px solid #0000;border-radius:6px;padding:.5rem 1rem;font-size:.95rem;font-weight:500;text-decoration:none}.nav-link:hover{color:var(--text-primary);background-color:var(--border-color)}.nav-link.active{color:var(--accent-cyan);background:#00ffff14;border-color:#00ffff26}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.5px;margin-bottom:1rem;font-weight:700}h1{font-size:2.5rem;line-height:1.2}p{color:var(--text-secondary);margin-bottom:1.25rem}.card{background:var(--gradient-card);border:1px solid var(--border-color);box-shadow:var(--shadow-soft);transition:var(--transition-smooth);border-radius:12px;padding:1.75rem}.card:hover{border-color:var(--border-color-glow);box-shadow:var(--glow-cyan), var(--shadow-soft);transform:translateY(-4px)}.status-badge{letter-spacing:.5px;text-transform:uppercase;border-radius:50px;align-items:center;gap:.5rem;padding:.4rem .8rem;font-size:.8rem;font-weight:600;display:inline-flex}.status-badge.live{color:var(--accent-emerald);background-color:#1ae66f1a;border:1px solid #1ae66f33}.status-badge.mock{color:var(--accent-amber);background-color:#f9b11f1a;border:1px solid #f9b11f33}.status-dot{border-radius:50%;width:8px;height:8px;display:inline-block}.status-badge.live .status-dot{background-color:var(--accent-emerald);box-shadow:0 0 8px var(--accent-emerald);animation:1.5s infinite pulse}.status-badge.mock .status-dot{background-color:var(--accent-amber);box-shadow:0 0 8px var(--accent-amber)}.btn{font-family:var(--font-body);cursor:pointer;transition:var(--transition-smooth);border:none;border-radius:8px;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background:var(--gradient-primary);color:var(--bg-main);box-shadow:var(--glow-cyan)}.btn-primary:hover{box-shadow:var(--glow-cyan), 0 0 25px #a651fb66;opacity:.95;transform:translateY(-2px)}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-color);background-color:#292e3d66}.btn-secondary:hover{border-color:var(--text-secondary);background-color:#333a4d99}.btn-danger{color:var(--accent-rose);background-color:#f53d5c1a;border:1px solid #f53d5c40}.btn-danger:hover{background-color:var(--accent-rose);color:var(--bg-main);box-shadow:0 0 15px #f53d5c4d}.form-group{margin-bottom:1.25rem}.form-label{color:var(--text-secondary);margin-bottom:.5rem;font-size:.9rem;font-weight:500;display:block}.form-input{border:1px solid var(--border-color);width:100%;color:var(--text-primary);font-family:var(--font-body);transition:var(--transition-smooth);background-color:#0b0e1399;border-radius:8px;padding:.75rem 1rem;font-size:.95rem}.form-input:focus{border-color:var(--accent-cyan);outline:none;box-shadow:0 0 0 2px #00ffff26}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;display:grid}.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;display:grid}.app-footer{border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);background-color:#0b0e1366;padding:2rem;font-size:.9rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%{transform:scale(.95);box-shadow:0 0 #1ae66f80}70%{transform:scale(1);box-shadow:0 0 0 6px #1ae66f00}to{transform:scale(.95);box-shadow:0 0 #1ae66f00}}.spinner{border:3px solid #00ffff1a;border-top-color:var(--accent-cyan);border-radius:50%;width:24px;height:24px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.alert{border:1px solid #0000;border-radius:8px;align-items:flex-start;gap:.75rem;margin-bottom:1.5rem;padding:1rem;display:flex}.alert-info{color:var(--text-primary);background-color:#00ffff0d;border-color:#00ffff26}.alert-warning{color:var(--text-primary);background-color:#f9b11f0d;border-color:#f9b11f26}.alert-icon{font-size:1.2rem;line-height:1}.alert-message{font-size:.9rem}.item-list{flex-direction:column;gap:1rem;max-height:500px;padding-right:.5rem;display:flex;overflow-y:auto}.item-list::-webkit-scrollbar{width:6px}.item-list::-webkit-scrollbar-track{background:#0b0e134d;border-radius:4px}.item-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.item-list::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.list-item{border:1px solid var(--border-color);transition:var(--transition-smooth);background:#13172066;border-radius:8px;justify-content:space-between;align-items:center;padding:1rem;animation:.4s ease-out fadeIn;display:flex}.list-item:hover{background-color:#171b2680;border-color:#0ff3}.list-item-content h4{margin-bottom:.25rem;font-size:1.1rem}.list-item-content p{color:var(--text-secondary);margin-bottom:0;font-size:.9rem}.list-item-time{color:var(--text-muted);margin-top:.25rem;font-size:.75rem;display:block}.empty-state{text-align:center;color:var(--text-muted);border:1px dashed var(--border-color);border-radius:8px;padding:3rem 1.5rem}.login-wrapper{justify-content:center;align-items:center;min-height:70vh;animation:.5s ease-out fadeIn;display:flex}.login-card{background:var(--gradient-card);border:1px solid var(--border-color);width:100%;max-width:450px;box-shadow:var(--shadow-soft);border-radius:16px;padding:2.5rem}.login-profile-toggle{grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:2rem;display:grid}.catalog-banner{border:1px solid var(--border-color);background:linear-gradient(135deg,#a651fb1a 0%,#00ffff0d 100%);border-radius:16px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.5rem;margin-bottom:3.5rem;padding:2rem;display:flex}.course-card{flex-direction:column;height:100%;display:flex}.course-card-body{flex-direction:column;flex-grow:1;justify-content:space-between;margin-top:1rem;display:flex}.course-meta{border-top:1px solid var(--border-color);justify-content:space-between;align-items:center;margin-top:1.5rem;padding-top:1rem;display:flex}.course-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:4px;padding:.25rem .6rem;font-size:.7rem;font-weight:700}.course-badge.gold-tier{color:var(--accent-amber);background-color:#f9b11f26;border:1px solid #f9b11f4d}.course-badge.premium{background:var(--gradient-primary);color:var(--bg-main)}.player-layout{grid-template-columns:1.8fr 1.2fr;gap:2rem;margin-top:1rem;display:grid}@media (width<=992px){.player-layout{grid-template-columns:1fr}}.video-player-container{border:1px solid var(--border-color);aspect-ratio:16/9;box-shadow:var(--shadow-soft);background-color:#000;border-radius:12px;margin-bottom:1.5rem;position:relative;overflow:hidden}.video-iframe{border:0;width:100%;height:100%;position:absolute;top:0;left:0}.video-placeholder{height:100%;color:var(--text-secondary);text-align:center;background-image:linear-gradient(45deg,#0f1319,#171d26);flex-direction:column;justify-content:center;align-items:center;padding:2rem;display:flex}.chatbot-sidebar{background:var(--gradient-card);border:1px solid var(--border-color);height:600px;box-shadow:var(--shadow-soft);border-radius:12px;flex-direction:column;display:flex;overflow:hidden}.chatbot-header{border-bottom:1px solid var(--border-color);background:#0b0e1366;justify-content:space-between;align-items:center;padding:1rem 1.25rem;display:flex}.chat-history{flex-direction:column;flex-grow:1;gap:1.25rem;padding:1.25rem;display:flex;overflow-y:auto}.chat-history::-webkit-scrollbar{width:5px}.chat-history::-webkit-scrollbar-track{background:0 0}.chat-history::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.chat-bubble{word-wrap:break-word;border-radius:12px;max-width:85%;padding:.9rem 1.1rem;font-size:.9rem;line-height:1.5;animation:.3s ease-out fadeIn}.chat-bubble.user{background-color:var(--accent-purple);color:var(--bg-main);box-shadow:var(--glow-purple);border-bottom-right-radius:2px;align-self:flex-end;font-weight:500}.chat-bubble.ai{color:var(--text-primary);border:1px solid var(--border-color);background-color:#1f232ebf;border-bottom-left-radius:2px;align-self:flex-start}.chat-input-container{border-top:1px solid var(--border-color);background:#0b0e1366;padding:1rem 1.25rem}.chat-input-form{gap:.75rem;display:flex}.chat-input{border:1px solid var(--border-color);color:var(--text-primary);font-family:var(--font-body);transition:var(--transition-smooth);background-color:#0b0e13cc;border-radius:8px;flex-grow:1;padding:.75rem 1rem;font-size:.9rem}.chat-input:focus{border-color:var(--accent-cyan);outline:none}.player-navigation{margin-top:2rem}.lesson-list{flex-direction:column;gap:.5rem;display:flex}.lesson-row{border:1px solid var(--border-color);color:var(--text-secondary);transition:var(--transition-smooth);cursor:pointer;background-color:#1317204d;border-radius:8px;align-items:center;gap:.75rem;padding:.9rem 1.25rem;font-size:.9rem;font-weight:500;text-decoration:none;display:flex}.lesson-row:hover{color:var(--text-primary);border-color:var(--border-color-glow);background-color:#1b202d80}.lesson-row.active{color:var(--accent-cyan);border-color:var(--accent-cyan);box-shadow:var(--glow-cyan);background-color:#00ffff14}.tab-headers{border-bottom:1px solid var(--border-color);gap:1rem;margin-bottom:1.5rem;display:flex}.tab-btn{color:var(--text-muted);font-family:var(--font-heading);cursor:pointer;transition:var(--transition-smooth);background:0 0;border:none;padding:.75rem .5rem;font-size:1rem;font-weight:600;position:relative}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{color:var(--accent-cyan)}.tab-btn.active:after{content:"";background:var(--gradient-primary);width:100%;height:2px;position:absolute;bottom:-1px;left:0}.tab-content{color:var(--text-secondary);font-size:.95rem;line-height:1.7;animation:.4s ease-out fadeIn}.admin-table-container{border:1px solid var(--border-color);border-radius:8px;width:100%;overflow-x:auto}.admin-table{border-collapse:collapse;text-align:left;width:100%;font-size:.9rem}.admin-table th{color:var(--text-primary);border-bottom:1px solid var(--border-color);background-color:#0b0e1399;padding:.75rem 1rem;font-weight:600}.admin-table td{border-bottom:1px solid var(--border-color);color:var(--text-secondary);padding:.75rem 1rem}.admin-table tr:last-child td{border-bottom:none}.quiz-container{flex-direction:column;gap:1.25rem;display:flex}.quiz-option-btn{border:1px solid var(--border-color);width:100%;color:var(--text-secondary);font-family:var(--font-body);text-align:left;cursor:pointer;transition:var(--transition-smooth);background-color:#0b0e1366;border-radius:8px;align-items:center;gap:1rem;padding:1rem;font-size:.95rem;display:flex}.quiz-option-btn:hover:not(:disabled){border-color:var(--border-color-glow);color:var(--text-primary);background-color:#13172099}.quiz-option-btn.selected{border-color:var(--accent-cyan);color:var(--text-primary);box-shadow:var(--glow-cyan);background-color:#00ffff0d}.quiz-option-btn.correct{border-color:var(--accent-emerald);color:var(--accent-emerald);background-color:#17cf631a;box-shadow:0 0 10px #17cf6326}.quiz-option-btn.incorrect{border-color:var(--accent-rose);color:var(--accent-rose);background-color:#f53d5c1a}.quiz-bullet{border:2px solid var(--border-color);width:20px;height:20px;transition:var(--transition-smooth);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.75rem;display:flex}.quiz-option-btn.selected .quiz-bullet{border-color:var(--accent-cyan);background-color:var(--accent-cyan)}.quiz-option-btn.correct .quiz-bullet{border-color:var(--accent-emerald);background-color:var(--accent-emerald)}.quiz-option-btn.incorrect .quiz-bullet{border-color:var(--accent-rose);background-color:var(--accent-rose)}.code-editor-textarea{border:1px solid var(--border-color);color:#c5c9db;tab-size:4;resize:vertical;width:100%;min-height:200px;transition:var(--transition-smooth);background-color:#0b0e14;border-radius:8px;padding:1rem;font-family:Courier New,Courier,monospace;font-size:.9rem;line-height:1.5}.code-editor-textarea:focus{border-color:var(--accent-cyan);outline:none;box-shadow:0 0 0 2px #00ffff26}.code-review-output{border:1px solid var(--border-color);background-color:#0b0e1380;border-radius:8px;margin-top:1.5rem;padding:1.5rem;line-height:1.6}.code-review-output pre{background-color:#05070a;border:1px solid #ffffff08;border-radius:6px;margin:1rem 0;padding:1rem;overflow-x:auto}.code-review-output code{color:var(--accent-cyan);font-family:monospace}.code-review-output h3{color:var(--accent-cyan);margin-top:1.5rem;margin-bottom:.75rem;font-size:1.15rem}.code-review-output h3:first-of-type{margin-top:0}.code-review-output p{color:var(--text-secondary);margin-bottom:.75rem;font-size:.95rem}