@import "https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Inter:wght@400;500;600;700&display=swap";:root{--primary:#0f62fe;--primary-dark:#0043ce;--primary-light:#4589ff;--secondary:#007d79;--secondary-dark:#005d5d;--accent:#fa4d56;--accent-green:#24a148;--accent-yellow:#f1c21b;--accent-orange:#ff832b;--bg-0:#161616;--bg-1:#1e1e1e;--bg-2:#262626;--bg-3:#393939;--bg-4:#4c4c4c;--surface:#262626;--surface-hover:#333;--surface-active:#393939;--glass:#262626;--glass-border:#525252;--glass-border-hover:#0f62fe;--text-primary:#fff;--text-secondary:#d4d4d8;--text-muted:#a1a1aa;--text-accent:#78a9ff;--border:#393939;--border-subtle:#262626;--border-strong:#525252;--border-accent:#0f62fe;--success:#24a148;--success-bg:#24a1481f;--warning:#f1c21b;--warning-bg:#f1c21b1f;--danger:#da1e28;--danger-bg:#da1e281f;--info:#0f62fe;--info-bg:#0f62fe1f;--radius-sm:2px;--radius:4px;--radius-lg:8px;--radius-xl:12px;--radius-full:9999px;--shadow-sm:0 1px 2px 0 #0000004d;--shadow:0 2px 6px 0 #0006;--shadow-lg:0 8px 16px 0 #00000073;--shadow-glow:none;--shadow-glow-cyan:none;--transition:all .15s cubic-bezier(.2, 0, .38, .9);--transition-slow:all .25s cubic-bezier(.2, 0, .38, .9);--transition-bounce:all .15s ease-out;--font:"IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"IBM Plex Mono", "JetBrains Mono", "Menlo", monospace;--sidebar-width:272px;--sidebar-collapsed-width:64px;--topbar-height:48px}[data-theme=light]{--primary:#0f62fe;--primary-dark:#0043ce;--primary-light:#4589ff;--secondary:#007d79;--secondary-dark:#005d5d;--accent:#da1e28;--accent-green:#24a148;--accent-yellow:#f1c21b;--accent-orange:#ff832b;--bg-0:#f4f4f4;--bg-1:#fff;--bg-2:#fff;--bg-3:#e0e0e0;--bg-4:#c6c6c6;--surface:#fff;--surface-hover:#e8e8e8;--surface-active:#d1d1d1;--glass:#fff;--glass-border:#e0e0e0;--glass-border-hover:#0f62fe;--text-primary:#161616;--text-secondary:#525252;--text-muted:#6f6f6f;--text-accent:#0f62fe;--border:#e0e0e0;--border-subtle:#f4f4f4;--border-strong:#8d8d8d;--border-accent:#0f62fe;--success:#24a148;--success-bg:#24a1481f;--warning:#f1c21b;--warning-bg:#f1c21b26;--danger:#da1e28;--danger-bg:#da1e281f;--info:#0f62fe;--info-bg:#0f62fe1f;--shadow-sm:0 1px 2px 0 #00000014;--shadow:0 2px 4px 0 #0000001a;--shadow-lg:0 4px 8px 0 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16px}.sidebar-hamburger{display:flex;top:10px;left:10px}.hamburger-hidden{opacity:0;pointer-events:none;transform:scale(.8)}.sidebar-overlay{-webkit-backdrop-filter:blur(4px);z-index:99;background:#0000008c;display:block;position:fixed;inset:0}}.glass-card,.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);transition:var(--transition);padding:24px;position:relative}[data-theme=light] .glass-card,[data-theme=light] .card{background:#fff;border-color:#d1d1d1;box-shadow:0 1px 3px #0000000d}.glass-card:hover,.card:hover{border-color:var(--border-strong);background:var(--surface-hover)}[data-theme=light] .glass-card:hover,[data-theme=light] .card:hover{background:#fff;border-color:#8d8d8d;box-shadow:0 3px 8px #00000014}.card-clickable{cursor:pointer}.card-clickable:hover{border-color:var(--primary)}.btn{border-radius:var(--radius-sm);font-size:.875rem;font-weight:500;font-family:var(--font);cursor:pointer;transition:var(--transition);white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:10px;padding:11px 18px;line-height:1.25;text-decoration:none;display:inline-flex}.btn:active{transform:none}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}.btn-secondary{border:1px solid var(--border-strong);color:var(--text-primary);background:0 0}.btn-secondary:hover{background:var(--surface-active);border-color:var(--text-secondary)}[data-theme=light] .btn-secondary{color:#161616;background:#fff;border:1px solid #8d8d8d}[data-theme=light] .btn-secondary:hover{background:#e8e8e8;border-color:#161616}.btn-gradient{background:var(--primary);color:#fff;border:1px 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.badge-cyan{color:#005d5d;background:#e5f6f6;border-color:#3ddbd9}.form-group{flex-direction:column;gap:8px;display:flex}.form-label{color:var(--text-secondary);font-size:.875rem;font-weight:600}.form-input,.input-field{background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.875rem;font-family:var(--font);transition:var(--transition);outline:none;width:100%;padding:11px 16px}.form-input:focus,.input-field:focus{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}.form-input::placeholder,.input-field::placeholder{color:var(--text-muted)}.form-select,select.input-field,select{background-color:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.875rem;font-weight:500;font-family:var(--font);transition:var(--transition);appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' 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.sidebar-study-streak{opacity:0;height:0;margin:0;padding:0;transition:all .2s;overflow:hidden}.sidebar-closed .sidebar-user{justify-content:center}.sidebar-closed .sidebar-user .user-avatar{margin:0 auto}.sidebar-closed .sidebar-section-title{text-align:center;padding:12px 4px 4px}.sidebar-closed .nav-item{justify-content:center;width:44px;height:44px;margin:0 auto;padding:0}.sidebar-closed .sidebar-logo{justify-content:center;padding:16px 0}.sidebar-closed .sidebar-actions{justify-content:center;width:100%;margin:0;padding:0}.sidebar-closed .sidebar-logo-container,.sidebar-closed .theme-toggle-btn,.sidebar-closed .theme-palette-btn,.sidebar-closed .sidebar-logout-btn{display:none!important}.sidebar-closed .sidebar-logo-icon{width:36px;height:36px;font-size:1rem}.sidebar-closed .sidebar-collapse-btn{display:flex}}@media (width<=768px){.sidebar{width:280px;box-shadow:none;transform:translate(-100%)}.sidebar.sidebar-open{transform:translate(0);box-shadow:8px 0 30px #0000004d}.sidebar.sidebar-closed{width:280px;transform:translate(-100%)}.sidebar-collapse-btn{display:none}}.sidebar-collapse-btn{border-radius:var(--radius-sm);border:1px solid var(--border);width:28px;height:28px;color:var(--text-muted);cursor:pointer;background:0 0;flex-shrink:0;justify-content:center;align-items:center;transition:all .2s;display:flex}.sidebar-collapse-btn:hover{background:var(--surface-hover);color:var(--text-primary)}.sidebar-logo{border-bottom:1px solid var(--border);background:var(--bg-1);align-items:center;gap:10px;padding:10px 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2px;font-size:.625rem;font-weight:700}.nav-item{color:var(--text-secondary);transition:var(--transition);cursor:pointer;text-align:left;background:0 0;border:none;border-left:3px solid #0000;border-radius:0;align-items:center;gap:10px;width:100%;min-height:32px;padding:5px 14px;font-size:.8125rem;font-weight:400;text-decoration:none;display:flex}.nav-item .sidebar-label-text{flex:1}.nav-item:hover{background:var(--surface-hover);color:var(--text-primary);border-left-color:var(--border-strong)}.nav-item.active{background:var(--surface-active);color:#fff;border-left-color:var(--primary);font-weight:600}[data-theme=light] .nav-item.active{color:#161616;border-left-color:var(--primary);background:#e8e8e8;font-weight:600}.nav-item.active .nav-icon{color:var(--primary)}.nav-icon{flex-shrink:0}.sidebar-user{border-top:1px solid var(--border);background:var(--bg-1);align-items:center;gap:8px;padding:8px 12px;transition:all .3s;display:flex}.user-avatar{object-fit:cover;border:1.5px solid var(--primary);border-radius:50%;flex-shrink:0;width:28px;height:28px}.user-info-name{color:var(--text-primary);font-size:.75rem;font-weight:600}.user-info-email{color:var(--text-muted);font-size:.625rem}.topbar{height:var(--topbar-height);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:50;background:#0a0e1acc;justify-content:space-between;align-items:center;padding:0 32px;display:flex;position:sticky;top:0}.topbar-title{font-size:1.1rem;font-weight:700}.topbar-right{align-items:center;gap:12px;display:flex}.cert-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:var(--transition);padding:24px;position:relative;overflow:hidden}.cert-card:before{content:"";background:var(--cert-color,var(--primary));height:3px;position:absolute;top:0;left:0;right:0}.cert-card:hover{border-color:var(--border-strong);background:var(--surface-hover);box-shadow:var(--shadow);transform:none}.cert-card-icon{border-radius:var(--radius-lg);justify-content:center;align-items:center;width:56px;height:56px;margin-bottom:16px;font-size:1.75rem;display:flex;position:relative}.cert-card-header{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px;display:flex}.cert-card-title{font-size:1.05rem;font-weight:700;line-height:1.3}.cert-card-code{color:var(--text-muted);margin-top:4px;font-size:.75rem}.cert-card-desc{color:var(--text-secondary);margin-bottom:20px;font-size:.85rem;line-height:1.6}.cert-card-meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.exam-container{height:calc(100vh - var(--topbar-height) - 64px);grid-template-columns:1fr 300px;align-items:start;gap:24px;display:grid}.exam-main{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-xl);padding:32px}.exam-question-num{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;font-size:.8rem;font-weight:600}.exam-question-text{word-break:break-word;overflow-wrap:break-word;margin-bottom:32px;font-size:1.1rem;font-weight:500;line-height:1.6}.exam-options{flex-direction:column;gap:12px;display:flex}.exam-option{background:var(--bg-3);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:var(--transition);text-align:left;width:100%;color:var(--text-primary);word-break:break-word;overflow-wrap:break-word;align-items:flex-start;gap:14px;padding:16px 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