:root{--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-display: "Outfit", sans-serif;--bg-main: #0c0a09;--bg-navbar: rgba(12, 10, 9, .75);--bg-card: #1c1917;--bg-input: #292524;--bg-hover: #44403c;--bg-modal: rgba(12, 10, 9, .85);--color-primary: #f97316;--color-secondary: #f59e0b;--color-accent: #ea580c;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--text-primary: #f5f5f4;--text-secondary: #a8a29e;--text-muted: #78716c;--border-color: rgba(255, 255, 255, .08);--border-color-glow: rgba(249, 115, 22, .3);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-full: 9999px;--shadow-sm: 0 4px 12px rgba(0, 0, 0, .3);--shadow-md: 0 8px 30px rgba(0, 0, 0, .4);--shadow-glow: 0 0 25px rgba(249, 115, 22, .2);--transition-fast: .2s ease;--transition-normal: .4s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);background-image:radial-gradient(circle at 15% 50%,rgba(249,115,22,.04) 0%,transparent 40%),radial-gradient(circle at 85% 10%,rgba(245,158,11,.03) 0%,transparent 40%);background-attachment:fixed;color:var(--text-primary);font-family:var(--font-sans);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}a{color:var(--color-primary);text-decoration:none;transition:var(--transition-fast)}a:hover{color:var(--color-secondary)}button{font-family:var(--font-sans);cursor:pointer;border:none;background:none;outline:none}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}hr{border:0;height:1px;background:var(--border-color);margin:16px 0}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;color:var(--text-primary)}h1{font-size:2.5rem;margin-bottom:1rem}h2{font-size:1.8rem;margin-bottom:1rem}h3{font-size:1.4rem;margin-bottom:.75rem}.text-center{text-align:center}.mt-4{margin-top:1.5rem}.mb-4{margin-bottom:1.5rem}.w-full{width:100%}.gradient-text{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block}.navbar-wrapper{position:sticky;top:0;z-index:100;background-color:var(--bg-navbar);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-color)}.navbar{height:72px;display:flex;align-items:center;justify-content:space-between}.nav-brand{cursor:pointer}.logo-text{font-family:var(--font-display);font-size:1.7rem;font-weight:800;letter-spacing:-.03em}.nav-links{display:flex;gap:8px}.nav-link-btn{color:var(--text-secondary);font-size:.95rem;font-weight:500;padding:8px 16px;border-radius:var(--radius-sm);transition:var(--transition-fast)}.nav-link-btn:hover,.nav-link-btn.active{color:var(--text-primary);background-color:#ffffff0d}.nav-actions{display:flex;align-items:center;gap:12px;position:relative}.user-profile-badge{display:flex;align-items:center;gap:10px;padding:6px 14px;background-color:#ffffff0a;border:1px solid var(--border-color);border-radius:var(--radius-full);cursor:pointer;transition:var(--transition-fast)}.user-profile-badge:hover{background-color:#ffffff14;border-color:#ffffff26}.avatar-sm{width:28px;height:28px;border-radius:var(--radius-full);object-fit:cover;background:var(--bg-input)}.username{font-size:.9rem;font-weight:500}.chevron-icon{color:var(--text-secondary)}.dropdown-menu{position:absolute;top:48px;right:0;width:220px;background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:8px;animation:slideDown .2s cubic-bezier(.16,1,.3,1);z-index:105}.dropdown-header{padding:8px 12px}.dropdown-name{font-weight:600;font-size:.95rem}.dropdown-role{font-size:.8rem;color:var(--text-secondary)}.dropdown-divider{margin:6px 0}.dropdown-item{width:100%;display:flex;align-items:center;gap:10px;padding:10px 12px;color:var(--text-secondary);font-size:.9rem;font-weight:500;border-radius:var(--radius-sm);text-align:left;transition:var(--transition-fast)}.dropdown-item:hover{color:var(--text-primary);background-color:var(--bg-hover)}.dropdown-item svg{color:var(--text-muted)}.logout-item:hover{color:var(--color-danger);background-color:#ef444414}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:.95rem;padding:10px 20px;border-radius:var(--radius-sm);transition:var(--transition-normal);text-align:center}.btn-sm{padding:8px 16px;font-size:.85rem}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;box-shadow:var(--shadow-glow);position:relative;overflow:hidden}.btn-primary:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.2) 0%,transparent 60%);opacity:0;transition:opacity .3s,transform .4s;pointer-events:none;transform:scale(.5)}.btn-primary:hover:after{opacity:1;transform:scale(1)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px #f9731659}.btn-primary:active{transform:translateY(0)}.btn-secondary{background-color:#ffffff0f;border:1px solid var(--border-color);color:var(--text-primary)}.btn-secondary:hover{background-color:#ffffff1a;border-color:#fff3}.btn-danger{background-color:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--color-danger)}.btn-danger:hover{background-color:#ef444433}.link-btn{color:var(--color-primary);font-weight:500;transition:var(--transition-fast)}.link-btn:hover{color:var(--color-secondary);text-decoration:underline}.form-group{margin-bottom:20px}.form-group label{display:block;font-weight:500;font-size:.85rem;color:var(--text-secondary);margin-bottom:6px}.form-input{width:100%;background-color:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.95rem;padding:10px 14px;font-family:var(--font-sans);transition:var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #f9731626;background-color:#292524b3}.form-input::placeholder{color:var(--text-muted)}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.file-upload-dropzone{position:relative;border:2px dashed var(--border-color);border-radius:var(--radius-sm);padding:24px;text-align:center;background-color:#ffffff03;transition:var(--transition-fast);cursor:pointer}.file-upload-dropzone:hover{border-color:var(--color-primary);background-color:#f973160a}.file-upload-dropzone input[type=file]{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.dropzone-prompt{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-secondary);font-size:.9rem}.dropzone-prompt svg{color:var(--text-muted)}.main-content{flex:1;display:flex;flex-direction:column}.view-loading{flex:1;display:flex;align-items:center;justify-content:center;min-height:400px}.spinner{width:48px;height:48px;border:4px solid var(--border-color);border-top-color:var(--color-primary);border-radius:var(--radius-full);animation:spin .8s linear infinite}.glass-panel{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm);animation:fadeUp .5s ease-out forwards}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-top:24px}.course-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;cursor:pointer;transition:var(--transition-normal);display:flex;flex-direction:column;height:100%;box-shadow:var(--shadow-sm)}.course-card:hover{transform:translateY(-6px);border-color:var(--border-color-glow);box-shadow:var(--shadow-glow)}.card-img-wrapper{position:relative;aspect-ratio:16/9;background-color:var(--bg-input);overflow:hidden}.card-img{width:100%;height:100%;object-fit:cover;transition:var(--transition-normal)}.course-card:hover .card-img{transform:scale(1.05)}.card-badge{position:absolute;top:12px;left:12px;background:#0d1423cc;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);border:1px solid var(--border-color);padding:4px 8px;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600}.card-body{padding:18px;flex:1;display:flex;flex-direction:column}.card-title{font-size:1.15rem;font-weight:600;margin-bottom:8px;line-height:1.35}.card-desc{color:var(--text-secondary);font-size:.85rem;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--border-color)}.card-price{font-size:1.15rem;font-weight:700;font-family:var(--font-display)}.card-instructor{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--text-secondary)}.card-rating{display:flex;align-items:center;gap:6px;margin-bottom:12px}.card-rating-stars{display:flex;align-items:center;gap:2px}.star-icon{width:16px;height:16px;flex-shrink:0}.star-icon.star-filled{fill:#f59e0b;color:#f59e0b}.star-icon.star-half{color:#f59e0b}.star-icon.star-empty{fill:none;stroke:#6b7280;stroke-width:1.5;color:#6b7280}.card-rating-value{font-weight:700;font-size:.9rem;color:#f59e0b;font-family:var(--font-display)}.card-rating-count{font-size:.78rem;color:var(--text-secondary)}.details-hero-rating{display:flex;align-items:center;gap:10px;margin-top:16px;flex-wrap:wrap}.details-hero-rating .card-rating-stars{gap:3px}.details-hero-rating .star-icon{width:20px;height:20px}.details-rating-value{font-weight:700;font-size:1.05rem;color:#f59e0b;font-family:var(--font-display)}.details-rating-count{font-size:.9rem;color:var(--text-secondary)}.details-rating-separator{color:var(--text-secondary);font-size:.9rem}.details-enrolled-count{font-size:.9rem;color:var(--text-secondary)}.hero-section{padding:80px 0 64px;text-align:center;position:relative;background:radial-gradient(circle at top,#f9731626,#0c0a0900 60%);animation:fadeUp .8s ease-out forwards}.hero-subtitle{font-size:1.15rem;color:var(--text-secondary);max-width:600px;margin:0 auto 24px}.catalog-filters{display:flex;align-items:center;gap:12px;overflow-x:auto;padding-bottom:8px;margin-bottom:24px}.filter-chip{padding:8px 16px;background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-full);color:var(--text-secondary);font-size:.85rem;font-weight:500;white-space:nowrap;transition:var(--transition-fast)}.filter-chip:hover,.filter-chip.active{color:var(--text-primary);border-color:var(--color-primary);background-color:#f973161f}.details-hero{background-color:var(--bg-card);border-bottom:1px solid var(--border-color);padding:48px 0}.details-grid{display:grid;grid-template-columns:1fr 360px;gap:32px;padding:32px 0}.syllabus-section{margin-top:32px}.accordion-item{border:1px solid var(--border-color);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}.accordion-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:16px;background-color:#ffffff03;color:var(--text-primary);font-weight:600;transition:var(--transition-fast);text-align:left}.accordion-header:hover{background-color:#ffffff08}.accordion-content{background-color:#00000026;border-top:1px solid var(--border-color);padding:12px 16px}.lesson-list-item{display:flex;align-items:center;justify-content:space-between;padding:10px 0;font-size:.9rem;border-bottom:1px dashed var(--border-color)}.lesson-list-item:last-child{border-bottom:none}.lesson-info{display:flex;align-items:center;gap:12px}.lesson-title-text{font-weight:500}.lesson-meta{font-size:.8rem;color:var(--text-secondary)}.sidebar-sticky{position:sticky;top:96px}.purchase-panel{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm);text-align:center}.purchase-price{font-size:2rem;font-weight:800;font-family:var(--font-display);margin-bottom:16px}.auth-view-wrapper{flex:1;display:flex;align-items:center;justify-content:center;padding:48px 0}.auth-card{width:100%;max-width:420px;background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:32px;box-shadow:var(--shadow-md)}.auth-header{text-align:center;margin-bottom:28px}.auth-header h1{font-size:1.8rem;margin-bottom:6px}.auth-footer{margin-top:24px;text-align:center;font-size:.9rem;color:var(--text-secondary)}.dashboard-layout{display:grid;grid-template-columns:240px 1fr;gap:32px;padding:32px 0;flex:1}.dashboard-sidebar{display:flex;flex-direction:column;gap:8px}.sidebar-menu-btn{width:100%;display:flex;align-items:center;gap:12px;padding:12px 16px;color:var(--text-secondary);font-weight:500;font-size:.95rem;border-radius:var(--radius-sm);text-align:left;transition:var(--transition-fast)}.sidebar-menu-btn:hover,.sidebar-menu-btn.active{color:var(--text-primary);background-color:#ffffff0d}.sidebar-menu-btn.active{background:linear-gradient(135deg,#6366f126,#a855f726);border-left:3px solid var(--color-primary)}.dashboard-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border-color)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:32px}.stat-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px;display:flex;align-items:center;gap:16px}.stat-icon{width:48px;height:48px;background-color:#6366f11a;color:var(--color-primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center}.stat-num{font-size:1.7rem;font-weight:700;font-family:var(--font-display);line-height:1.2}.stat-label{font-size:.85rem;color:var(--text-secondary)}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#0009;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s cubic-bezier(.16,1,.3,1)}.modal-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-md);width:90%;padding:24px;max-height:90vh;overflow-y:auto;position:relative;animation:scaleUp .3s cubic-bezier(.34,1.56,.64,1)}.max-w-sm{max-width:400px}.max-w-md{max-width:560px}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.btn-close{font-size:1.8rem;color:var(--text-secondary);transition:var(--transition-fast)}.btn-close:hover{color:var(--text-primary)}.star-rating-selector{display:inline-flex;flex-direction:row-reverse;font-size:2.2rem;gap:4px}.star-input{color:var(--text-muted);cursor:pointer;transition:var(--transition-fast)}.star-input:hover,.star-input:hover~.star-input,.star-input.active,.star-input.active~.star-input{color:var(--color-warning)}.otp-inputs-wrapper{display:flex;justify-content:center;margin:20px 0}.otp-field{text-align:center;font-size:2rem;letter-spacing:.3em;padding:8px;max-width:220px;font-family:monospace}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:12px;z-index:2000}.toast{min-width:280px;max-width:400px;background-color:var(--bg-card);border:1px solid var(--border-color);border-left:4px solid var(--color-primary);border-radius:var(--radius-sm);padding:14px 18px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;color:var(--text-primary);font-size:.9rem;font-weight:500;animation:slideInLeft .3s cubic-bezier(.16,1,.3,1);transition:var(--transition-normal)}.toast-success{border-left-color:var(--color-success)}.toast-error{border-left-color:var(--color-danger)}.toast-warning{border-left-color:var(--color-warning)}.toast-exit{opacity:0;transform:translateY(20px)}.table-wrapper{width:100%;overflow-x:auto;border:1px solid var(--border-color);border-radius:var(--radius-sm);background-color:#ffffff03}.data-table{width:100%;border-collapse:collapse;text-align:left;font-size:.9rem}.data-table th,.data-table td{padding:12px 16px;border-bottom:1px solid var(--border-color)}.data-table th{background-color:#ffffff08;font-weight:600;color:var(--text-secondary)}.data-table tbody tr:last-child td{border-bottom:none}.data-table tbody tr:hover{background-color:#ffffff03}.footer-wrapper{border-top:1px solid var(--border-color);background-color:var(--bg-main);padding:24px 0;margin-top:48px}.footer{display:flex;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--text-secondary)}.footer-links{display:flex;gap:16px}.footer-link{color:var(--text-muted)}.footer-link:hover{color:var(--text-primary)}.hidden{display:none!important}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleUp{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}@keyframes slideDown{0%{transform:translateY(-10px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes slideInLeft{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes fadeUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 900px){.dashboard-layout,.stats-grid,.details-grid{grid-template-columns:1fr}.navbar{flex-direction:column;height:auto;padding:16px 24px;gap:12px}.nav-links{width:100%;justify-content:center;flex-wrap:wrap}.nav-actions{width:100%;justify-content:center}}