:root{--bg-primary:#0f1117;--bg-secondary:#1a1d27;--bg-card:#1e2130;--bg-input:#252838;--border:#2e3348;--border-focus:#6366f1;--text-primary:#e8eaed;--text-secondary:#9ca3af;--text-muted:#6b7280;--accent:#6366f1;--accent-hover:#818cf8;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--danger-hover:#dc2626;--sidebar-width:220px}*{margin:0;padding:0;box-sizing:border-box}body,html{height:100%;background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:14px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .2s}.sidebar-header{display:flex;align-items:center;gap:10px;padding:16px 16px 20px;border-bottom:1px solid var(--border)}.sidebar-logo{font-size:1.1rem;font-weight:700;color:#fff}.sidebar-badge{font-size:.65rem;background:rgba(99,102,241,.2);color:var(--accent);padding:2px 6px;border-radius:4px;font-weight:500}.sidebar-nav{flex:1 1;padding:12px 8px;overflow-y:auto}.sidebar-section{color:var(--text-muted);font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;padding:12px 8px 4px}.sidebar-link{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:6px;color:rgba(255,255,255,.7);font-size:.85rem;transition:background .15s,color .15s;cursor:pointer}.sidebar-link:hover{background:rgba(255,255,255,.08);color:#fff}.sidebar-link.active{background:rgba(99,102,241,.15);color:#fff;font-weight:600;border-left:3px solid var(--accent)}.sidebar-link-icon{font-size:1rem;width:20px;text-align:center;flex-shrink:0}.main-content{flex:1 1;margin-left:var(--sidebar-width);padding:24px 32px;max-width:960px}.page-header{margin-bottom:24px}.page-title{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:4px}.page-subtitle{font-size:.82rem;color:var(--text-secondary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:20px}.card,.card-title{margin-bottom:16px}.card-title{font-size:.95rem;font-weight:600;color:#fff}.form-group{margin-bottom:14px}.form-label{display:block;font-size:.8rem;font-weight:500;color:var(--text-secondary);margin-bottom:4px}.form-input{width:100%;padding:8px 12px;background:var(--bg-input);border:1px solid var(--border);border-radius:6px;color:var(--text-primary);font-size:.85rem;outline:none;transition:border-color .15s}.form-input:focus{border-color:var(--border-focus)}.form-input::placeholder{color:var(--text-muted)}.form-hint{font-size:.72rem;color:var(--text-muted);margin-top:3px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;font-size:.82rem;font-weight:500;border:none;cursor:pointer;transition:background .15s,opacity .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}.btn-ghost:hover:not(:disabled){background:rgba(255,255,255,.06);color:var(--text-primary)}.btn-sm{padding:5px 10px;font-size:.76rem}.form-select{width:100%;padding:8px 12px;background:var(--bg-input);border:1px solid var(--border);border-radius:6px;color:var(--text-primary);font-size:.85rem;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239ca3af' viewBox='0 0 16 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var(--border);border-radius:8px;margin-bottom:8px;background:var(--bg-card);transition:border-color .15s}.account-item:hover{border-color:rgba(99,102,241,.3)}.account-info{gap:12px;flex:1 1;min-width:0}.account-avatar,.account-info{display:flex;align-items:center}.account-avatar{width:36px;height:36px;border-radius:50%;background:var(--bg-input);justify-content:center;font-size:1rem;flex-shrink:0}.account-name{font-weight:600;font-size:.9rem;color:#fff}.account-meta{font-size:.76rem;color:var(--text-muted)}.account-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.toggle{position:relative;width:36px;height:20px;cursor:pointer}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;inset:0;background:var(--bg-input);border-radius:10px;transition:background .2s}.toggle-slider:before{content:"";position:absolute;width:16px;height:16px;border-radius:50%;background:#fff;top:2px;left:2px;transition:transform .2s}.toggle input:checked+.toggle-slider{background:var(--accent)}.toggle input:checked+.toggle-slider:before{transform:translateX(16px)}.hamburger{position:fixed;top:12px;left:12px;z-index:200;background:var(--bg-secondary);border:1px solid var(--border);border-radius:6px;padding:8px;color:#fff;cursor:pointer;font-size:1.2rem;line-height:1}.hamburger,.sidebar-overlay{display:none}@media (max-width:768px){.hamburger{display:block}.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}.sidebar-overlay.open{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:90}.main-content{margin-left:0;padding:60px 16px 24px}.account-item{flex-direction:column;align-items:flex-start;gap:10px}.account-actions{width:100%;justify-content:flex-end}}