:root{--bg:#0a0a0f;--bg2:#111118;--bg3:#18181f;--border:#ffffff12;--border2:#ffffff24;--text:#f0f0f5;--text2:#8888a0;--text3:#555568;--accent:#d4af37;--accent2:#e8c84a;--accent-glow:#d4af3733;--green:#22c55e;--orange:#f97316;--red:#ef4444;--sidebar-w:240px;--radius:12px;--radius-sm:8px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:DM Sans,sans-serif;overflow-x:hidden}h1,h2,h3,h4,h5{font-family:Syne,sans-serif}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;font-family:DM Sans,sans-serif}.app-shell{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--bg2);border-right:1px solid var(--border);z-index:100;flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-logo{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:22px 18px 18px;display:flex}.logo-icon{background:var(--accent);color:#000;width:34px;height:34px;box-shadow:0 0 20px var(--accent-glow);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;font-family:Syne,sans-serif;font-size:12px;font-weight:800;display:flex}.logo-text{letter-spacing:-.3px;font-family:Syne,sans-serif;font-size:13px;font-weight:700;line-height:1.2}.logo-sub{color:var(--text3);letter-spacing:1.5px;text-transform:uppercase;font-size:9px}.sidebar-nav{flex:1;padding:14px 10px;overflow-y:auto}.nav-section{margin-bottom:22px}.nav-label{letter-spacing:1.5px;text-transform:uppercase;color:var(--text3);margin-bottom:6px;padding:0 8px;font-size:10px;font-weight:600}.nav-item{border-radius:var(--radius-sm);cursor:pointer;color:var(--text2);align-items:center;gap:10px;padding:9px 10px;font-size:13.5px;font-weight:400;text-decoration:none;transition:all .15s;display:flex;position:relative}.nav-item:hover{background:var(--bg3);color:var(--text)}.nav-item.active{color:var(--accent2);background:#d4af371a}.nav-item.active:before{content:"";background:var(--accent);border-radius:0 3px 3px 0;width:3px;height:18px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.nav-icon{text-align:center;width:20px;font-size:15px}.sidebar-user{border-top:1px solid var(--border);cursor:pointer;align-items:center;gap:10px;padding:14px 12px;display:flex}.user-avatar{background:linear-gradient(135deg, var(--accent), #b8860b);color:#000;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:12px;font-weight:700;display:flex}.user-name{font-size:12px;font-weight:600;line-height:1.2}.user-plan{color:var(--accent2);font-size:10px}.main-content{margin-left:var(--sidebar-w);flex-direction:column;flex:1;min-width:0;display:flex}.topbar{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:50;background:#0a0a0fd9;align-items:center;gap:16px;height:58px;padding:0 26px;display:flex;position:sticky;top:0}.topbar-title{font-family:Syne,sans-serif;font-size:15px;font-weight:700}.topbar-breadcrumb{color:var(--text3);font-size:11px}.topbar-right{align-items:center;gap:10px;margin-left:auto;display:flex}.page-content{padding:26px}.welcome-banner{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px;padding:26px 30px;position:relative;overflow:hidden}.welcome-banner:before{content:"";background:radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);pointer-events:none;width:200px;height:200px;position:absolute;top:-40px;right:-40px}.welcome-tag{color:var(--accent2);letter-spacing:1px;text-transform:uppercase;background:#d4af371f;border:1px solid #d4af3733;border-radius:20px;margin-bottom:10px;padding:3px 10px;font-size:10px;font-weight:600;display:inline-block}.welcome-title{margin-bottom:5px;font-family:Syne,sans-serif;font-size:22px;font-weight:800}.welcome-sub{color:var(--text2);font-size:13px}.stats-grid{grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:24px;display:grid}.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:18px;transition:border-color .2s}.stat-card:hover{border-color:var(--border2)}.stat-icon{margin-bottom:10px;font-size:20px}.stat-value{margin-bottom:3px;font-family:Syne,sans-serif;font-size:26px;font-weight:800;line-height:1}.stat-label{color:var(--text3);font-size:11px}.section-header{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.section-title{font-family:Syne,sans-serif;font-size:15px;font-weight:700}.courses-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:28px;display:grid}.course-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;color:inherit;text-decoration:none;transition:all .2s;display:block;overflow:hidden}.course-card:hover{border-color:var(--border2);transform:translateY(-2px);box-shadow:0 12px 40px #0006}.course-card.locked{opacity:.65}.course-thumb{justify-content:center;align-items:center;height:150px;font-size:44px;display:flex;position:relative}.course-progress-bar{background:#ffffff1a;height:3px;position:absolute;bottom:0;left:0;right:0}.course-progress-fill{background:var(--accent);border-radius:2px;height:100%}.course-info{padding:14px}.course-category{letter-spacing:1px;text-transform:uppercase;color:var(--accent2);margin-bottom:5px;font-size:9px;font-weight:600}.course-title{margin-bottom:8px;font-family:Syne,sans-serif;font-size:13px;font-weight:700;line-height:1.3}.progress-row{align-items:center;gap:8px;display:flex}.progress-track{background:var(--bg3);border-radius:3px;flex:1;height:4px;overflow:hidden}.progress-fill{background:var(--accent);border-radius:3px;height:100%}.progress-pct{color:var(--accent2);font-size:11px;font-weight:600}.lock-chip{color:var(--text3);border:1px solid var(--border2);background:#ffffff0f;border-radius:20px;align-items:center;gap:4px;padding:4px 10px;font-size:10px;font-weight:600;display:inline-flex}.btn-primary{background:var(--accent);color:#000;border-radius:var(--radius-sm);cursor:pointer;border:none;align-items:center;gap:6px;padding:9px 18px;font-size:12px;font-weight:700;transition:all .2s;display:inline-flex;box-shadow:0 4px 14px #d4af374d}.btn-primary:hover{background:var(--accent2);transform:translateY(-1px);box-shadow:0 6px 20px #d4af3773}.btn-secondary{background:var(--bg3);color:var(--text);border:1px solid var(--border2);border-radius:var(--radius-sm);cursor:pointer;align-items:center;gap:6px;padding:9px 18px;font-size:12px;font-weight:500;transition:all .2s;display:inline-flex}.btn-secondary:hover{border-color:var(--accent2);color:var(--accent2)}.btn-outline{color:var(--text2);border:1px solid var(--border2);border-radius:var(--radius-sm);cursor:pointer;background:0 0;align-items:center;gap:6px;padding:7px 16px;font-size:12px;font-weight:600;transition:all .2s;display:inline-flex}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.btn-sm{cursor:pointer;border-radius:6px;padding:5px 12px;font-size:11px;font-weight:600;transition:all .15s}.btn-sm.primary{background:var(--accent);color:#000;border:none}.btn-sm.ghost{background:var(--bg3);border:1px solid var(--border2);color:var(--text2)}.btn-sm.danger{color:var(--red);background:#ef44441a;border:1px solid #ef444426}.btn-sm.success{color:var(--green);background:#22c55e1f;border:1px solid #22c55e33}.btn-icon{border-radius:var(--radius-sm);background:var(--bg3);border:1px solid var(--border);cursor:pointer;width:34px;height:34px;color:var(--text2);justify-content:center;align-items:center;font-size:15px;transition:all .15s;display:flex}.btn-icon:hover{border-color:var(--border2);color:var(--text)}input[type=email],input[type=password],input[type=text],.form-input{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);outline:none;padding:10px 12px;font-family:DM Sans,sans-serif;font-size:13px;transition:border-color .15s}input:focus,.form-input:focus{border-color:var(--accent2)}.input-group{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.input-group label{color:var(--text3);letter-spacing:.3px;font-size:11px;font-weight:600}.auth-layout{background:radial-gradient(circle at top right, #d4af3714, transparent 40%), radial-gradient(circle at bottom left, #ffffff08, transparent 40%), var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-box{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:400px;padding:2.25rem}.player-layout{grid-template-columns:1fr 300px;gap:22px;padding:24px;display:grid}.player-sidebar-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;max-height:calc(100vh - 80px);display:flex;position:sticky;top:70px;overflow:hidden}.ps-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 16px;font-size:12px;font-weight:700;display:flex}.ps-list{flex:1;overflow-y:auto}.ps-lesson{cursor:pointer;border-bottom:1px solid var(--border);color:var(--text2);align-items:center;gap:10px;padding:10px 16px;font-size:12px;text-decoration:none;transition:background .15s;display:flex}.ps-lesson:last-child{border-bottom:none}.ps-lesson:hover{color:var(--text);background:#d4af370d}.ps-lesson.active{color:var(--accent2);background:#d4af3714}.ps-dot{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;font-size:9px;display:flex}.ps-dot.done{background:var(--green);color:#fff}.ps-dot.active-dot{background:var(--accent);color:#000}.ps-dot.pending{background:var(--bg3);border:1px solid var(--border2)}.content-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:20px}.content-card-title{margin-bottom:14px;font-family:Syne,sans-serif;font-size:14px;font-weight:700}.prose{color:var(--text2);font-size:14px;line-height:1.75}.prose p{margin-bottom:1rem}.prose ul{margin-bottom:1rem;padding-left:1.25rem}.prose li{margin-bottom:.4rem}.prose strong{color:var(--text)}.prose h2{color:var(--text);margin:1.5rem 0 .75rem;font-family:Syne,sans-serif;font-size:17px;font-weight:700}.tabs{border-bottom:1px solid var(--border);margin-bottom:14px;display:flex}.tab{cursor:pointer;color:var(--text3);border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 16px;font-size:12px;font-weight:500;transition:all .15s}.tab:hover{color:var(--text2)}.tab.active{color:var(--accent2);border-bottom-color:var(--accent)}.table-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px;overflow:hidden}.table-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 18px;display:flex}table{border-collapse:collapse;width:100%}th{text-align:left;letter-spacing:.8px;text-transform:uppercase;color:var(--text3);border-bottom:1px solid var(--border);background:var(--bg3);padding:11px 18px;font-size:10px;font-weight:600}td{border-bottom:1px solid var(--border);padding:13px 18px;font-size:12.5px}tr:last-child td{border-bottom:none}tr:hover td{background:#ffffff04}.status-pill{border-radius:20px;align-items:center;gap:5px;padding:3px 10px;font-size:10px;font-weight:600;display:inline-flex}.status-pill.active{color:var(--green);background:#22c55e1a}.status-pill.pending{color:var(--orange);background:#f973161a}.status-dot{background:currentColor;border-radius:50%;width:5px;height:5px}.badge{border-radius:20px;align-items:center;gap:5px;padding:3px 10px;font-size:10px;font-weight:600;display:inline-flex}.badge-green{color:var(--green);background:#22c55e1a;border:1px solid #22c55e33}.badge-gold{color:var(--accent2);background:#d4af371a;border:1px solid #d4af3733}.material-item{border-radius:var(--radius-sm);border:1px solid var(--border);cursor:pointer;color:inherit;align-items:center;gap:12px;margin-bottom:8px;padding:11px 12px;text-decoration:none;transition:all .15s;display:flex}.material-item:hover{border-color:var(--border2);background:var(--bg3)}.material-icon{background:#d4af371a;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;display:flex}.material-name{font-size:12px;font-weight:500}.material-size{color:var(--text3);font-size:11px}.material-dl{color:var(--text3);margin-left:auto;font-size:14px}@media (max-width:1024px){.courses-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.sidebar{transform:translate(-100%)}.main-content{margin-left:0}.player-layout{grid-template-columns:1fr;padding:14px}.courses-grid{grid-template-columns:1fr}.page-content{padding:14px}}