:root{--primary: #1B4F72;--secondary: #F39C12;--green: #1E8449;--red: #C0392B;--orange: #E67E22;--bg: #F4F6F8;--card-bg: #ffffff;--border: #e2e8f0;--text: #1a202c;--muted: #64748b;--sidebar-w: 240px;--nav-h: 60px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:15px;-webkit-font-smoothing:antialiased}.app-shell{display:flex;height:100%}.sidebar{width:var(--sidebar-w);background:var(--primary);color:#fff;display:flex;flex-direction:column;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;z-index:100;overflow-y:auto}.sidebar-logo{padding:20px 16px 12px;border-bottom:1px solid rgba(255,255,255,.12);display:flex;align-items:center;gap:10px}.sidebar-logo img{height:36px;width:auto;border-radius:6px;object-fit:contain}.sidebar-logo-text{font-size:13px;font-weight:700;line-height:1.3;color:#fff}.sidebar-nav{flex:1;padding:12px 0}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 20px;color:#ffffffbf;cursor:pointer;border:none;background:none;width:100%;text-align:left;font-size:14px;font-weight:500;transition:background .15s,color .15s;position:relative;border-radius:0}.nav-item:hover{background:#ffffff1a;color:#fff}.nav-item.active{background:#ffffff2e;color:#fff;font-weight:700}.nav-item.active:before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--secondary);border-radius:0 3px 3px 0}.nav-badge{margin-left:auto;background:var(--secondary);color:#000;font-size:11px;font-weight:800;border-radius:10px;padding:1px 7px;min-width:20px;text-align:center}.sidebar-footer{padding:12px 16px 20px;border-top:1px solid rgba(255,255,255,.12)}.main-area{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column;min-height:100%;overflow:hidden}.top-bar{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;position:sticky;top:0;z-index:50}.top-bar-title{font-size:17px;font-weight:700;color:var(--text)}.top-bar-actions{display:flex;align-items:center;gap:12px}.page-content{flex:1;padding:24px;max-width:960px;width:100%;margin:0 auto;overflow-y:auto}.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--primary);height:var(--nav-h);z-index:100;border-top:1px solid rgba(255,255,255,.1)}.bottom-nav-inner{display:flex;height:100%}.bnav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:#fff9;cursor:pointer;border:none;background:none;font-size:10px;font-weight:500;position:relative;transition:color .15s}.bnav-item.active{color:var(--secondary)}.bnav-item svg{width:22px;height:22px}.bnav-badge{position:absolute;top:6px;right:calc(50% - 18px);background:var(--secondary);color:#000;font-size:9px;font-weight:800;border-radius:8px;padding:1px 5px}@media (max-width: 720px){.sidebar{display:none}.main-area{margin-left:0;padding-bottom:var(--nav-h)}.bottom-nav{display:block}.page-content{padding:16px}}.offline-banner{background:#92400e;color:#fff;text-align:center;font-size:13px;padding:8px 16px;font-weight:600}.card{background:var(--card-bg);border-radius:14px;padding:20px;box-shadow:0 1px 4px #00000012;margin-bottom:16px}.card-sm{padding:14px 16px;border-radius:10px}.btn{display:inline-flex;align-items:center;gap:7px;padding:10px 20px;border-radius:10px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:opacity .15s,transform .1s;white-space:nowrap}.btn:hover:not(:disabled){opacity:.88;transform:translateY(-1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:#fff}.btn-secondary{background:var(--secondary);color:#000}.btn-danger{background:var(--red);color:#fff}.btn-outline{background:transparent;border:1.5px solid var(--border);color:var(--text)}.btn-ghost{background:transparent;color:var(--primary);padding:8px 12px}.btn-sm{padding:6px 14px;font-size:13px;border-radius:8px}.btn-lg{padding:13px 28px;font-size:15px;border-radius:12px}.btn-full{width:100%;justify-content:center}.label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:5px;text-transform:uppercase;letter-spacing:.4px}.input{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:10px;font-size:14px;background:#fff;color:var(--text);outline:none;transition:border-color .15s}.input:focus{border-color:var(--primary)}.select{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:10px;font-size:14px;background:#fff;color:var(--text);outline:none;cursor:pointer}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-full{grid-column:1 / -1}.tabs{display:flex;gap:4px;background:#f1f5f9;border-radius:12px;padding:4px;margin-bottom:20px;flex-wrap:wrap}.tab{flex:1;padding:9px 14px;border-radius:9px;border:none;background:none;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;transition:background .15s,color .15s;white-space:nowrap;text-align:center}.tab.active{background:#fff;color:var(--primary);box-shadow:0 1px 4px #0000001a}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:700}.badge-green{background:#dcfce7;color:#166534}.badge-amber{background:#fef3c7;color:#92400e}.badge-red{background:#fee2e2;color:#991b1b}.badge-blue{background:#dbeafe;color:#1e40af}.badge-gray{background:#f1f5f9;color:#475569}.badge-purple{background:#ede9fe;color:#6d28d9}.alert{border-radius:10px;padding:12px 16px;font-size:14px;margin-bottom:14px}.alert-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}.alert-success{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.alert-error{background:#fff1f2;color:#9f1239;border:1px solid #fecdd3}.alert-warning{background:#fffbeb;color:#92400e;border:1px solid #fde68a}.spinner{width:22px;height:22px;border:2.5px solid rgba(0,0,0,.12);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.spinner-white{border-color:#ffffff4d;border-top-color:#fff}@keyframes spin{to{transform:rotate(360deg)}}.loading-center{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 0;gap:14px;color:var(--muted);font-size:14px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:20px}.stat-tile{background:#fff;border-radius:12px;padding:16px;box-shadow:0 1px 4px #0000000f}.stat-value{font-size:26px;font-weight:800;color:var(--primary)}.stat-label{font-size:12px;color:var(--muted);margin-top:2px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}thead tr{background:#f8fafc}th{padding:10px 14px;text-align:left;font-weight:600;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.4px}td{padding:12px 14px;border-top:1px solid #f1f5f9}tr:hover td{background:#fafafa}.course-card{background:#fff;border-radius:12px;padding:16px;border:1.5px solid var(--border);cursor:pointer;transition:box-shadow .15s,transform .1s}.course-card:hover{box-shadow:0 4px 16px #0000001a;transform:translateY(-2px)}.course-code{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.course-title{font-size:15px;font-weight:700;margin:4px 0}.course-meta{font-size:12px;color:var(--muted)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:200;padding:16px}.modal{background:#fff;border-radius:16px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;padding:24px;position:relative}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-title{font-size:18px;font-weight:800}.modal-close{background:#f1f5f9;border:none;border-radius:8px;width:32px;height:32px;cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center}.empty{text-align:center;padding:48px 24px;color:var(--muted)}.empty-icon{font-size:48px;margin-bottom:12px}.empty-title{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--text)}.quote-card{border-radius:16px;padding:24px 28px;color:#fff;margin-bottom:20px;position:relative;overflow:hidden}.quote-text{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px}.quote-author{font-size:13px;opacity:.75}.divider{border:none;border-top:1px solid var(--border);margin:18px 0}.text-muted{color:var(--muted)}.text-sm{font-size:13px}.fw-700{font-weight:700}.mb-0{margin-bottom:0!important}.row{display:flex;align-items:center;gap:12px}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.gap-8{gap:8px}.mt-16{margin-top:16px}.section-title{font-size:16px;font-weight:700;margin-bottom:14px}.auth-outer{min-height:100vh;background:linear-gradient(135deg,var(--primary) 0%,#0d2b45 100%);display:flex;align-items:center;justify-content:center;padding:20px}.auth-card{background:#fff;border-radius:20px;padding:36px;width:100%;max-width:440px;box-shadow:0 20px 60px #0000004d}.auth-logo{display:block;height:64px;margin:0 auto 20px;border-radius:12px;object-fit:contain}.inst-option{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:10px;cursor:pointer;border:1.5px solid var(--border);margin-bottom:8px;transition:border-color .15s,background .15s;background:#fff;width:100%;text-align:left}.inst-option:hover{background:#f8fafc;border-color:var(--primary)}.inst-option.selected{background:#eff6ff;border-color:var(--primary)}.inst-logo{width:40px;height:40px;border-radius:8px;object-fit:contain;background:#f8fafc;flex-shrink:0}.inst-name{font-size:14px;font-weight:700}.inst-short{font-size:12px;color:var(--muted)}.notif-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid #f1f5f9;cursor:pointer}.notif-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex-shrink:0;margin-top:6px}.notif-dot.read{background:#e2e8f0}.event-chip{display:flex;align-items:center;gap:10px;padding:12px 14px;background:#f8fafc;border-radius:10px;margin-bottom:8px}.fee-row{display:flex;justify-content:space-between;align-items:flex-start;padding:14px 0;border-bottom:1px solid #f1f5f9;gap:12px;flex-wrap:wrap}.timeline-step{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}.timeline-dot{width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}.search-bar{display:flex;gap:10px;margin-bottom:18px}.search-bar .input{flex:1}.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.chip{padding:5px 14px;border-radius:20px;border:1.5px solid var(--border);font-size:13px;font-weight:600;cursor:pointer;background:#fff;transition:background .15s,border-color .15s,color .15s}.chip.active{background:var(--primary);border-color:var(--primary);color:#fff}.oer-embed{width:100%;aspect-ratio:16/9;border-radius:12px;border:none}.vroom-card{background:#fff;border-radius:12px;padding:16px;border:1.5px solid var(--border);margin-bottom:12px}.avatar{border-radius:50%;object-fit:cover;background:#e2e8f0}.avatar-placeholder{border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}