.sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;z-index:100;transition:width .3s cubic-bezier(.4,0,.2,1)}.sidebar.collapsed{width:72px}.collapse-btn{position:absolute;right:-12px;top:50%;transform:translateY(-50%);width:24px;height:24px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:50%;color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:101;transition:all .2s;padding:0}.collapse-btn:hover{color:var(--accent-primary);border-color:var(--accent-primary)}.sidebar-header{display:flex;align-items:center;gap:12px;padding:20px 24px;border-bottom:1px solid var(--border-color);transition:padding .3s ease;min-height:68px;white-space:nowrap}.sidebar.collapsed .sidebar-header{padding:20px 0;justify-content:center}.logo-icon{color:var(--accent-primary)}.logo-text{font-size:1.25rem;font-weight:700;color:var(--text-primary);transition:opacity .3s,width .3s;opacity:1;overflow:hidden}.sidebar.collapsed .logo-text{opacity:0;width:0}.sidebar-nav{flex:1;padding:12px;overflow-y:auto;overflow-x:hidden}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius);color:var(--text-secondary);font-size:.875rem;font-weight:500;text-decoration:none;transition:all .2s ease;margin-bottom:4px;white-space:nowrap}.sidebar.collapsed .nav-item{padding:12px;justify-content:center}.nav-label{transition:opacity .3s,width .3s;opacity:1;overflow:hidden}.sidebar.collapsed .nav-label{opacity:0;width:0}.nav-item:hover{background:var(--bg-tertiary);color:var(--text-primary);text-decoration:none}.nav-item.active{background:#3b82f626;color:var(--accent-primary)}.nav-item.active:hover{background:#3b82f633}.sidebar-footer{padding:16px;border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;min-height:68px}.sidebar.collapsed .sidebar-footer{justify-content:center;padding:16px 0}.admin-info{display:flex;align-items:center;gap:12px}.sidebar.collapsed .admin-info{display:none}.admin-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent-secondary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem;text-transform:uppercase}.admin-details{display:flex;flex-direction:column}.admin-name{font-size:.875rem;font-weight:500;color:var(--text-primary)}.admin-role{font-size:.75rem;color:var(--text-muted);text-transform:capitalize}.logout-btn{padding:8px;background:transparent;border:none;color:var(--text-muted);border-radius:var(--radius);transition:all .2s ease}.logout-btn:hover{background:var(--bg-tertiary);color:var(--accent-danger)}:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--accent-primary: #3b82f6;--accent-secondary: #8b5cf6;--accent-success: #22c55e;--accent-warning: #f59e0b;--accent-danger: #ef4444;--border-color: #334155;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .3);--radius: 8px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}a{color:var(--accent-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-container{display:flex;min-height:100vh}.main-content{flex:1;padding:24px;margin-left:260px;transition:margin-left .3s cubic-bezier(.4,0,.2,1)}.main-content.expanded{margin-left:72px}.card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.card-title{font-size:1rem;font-weight:600;color:var(--text-primary)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-bottom:24px}.stat-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);padding:20px}.stat-label{font-size:.875rem;color:var(--text-secondary);margin-bottom:8px}.stat-value{font-size:2rem;font-weight:700;color:var(--text-primary)}.stat-change{font-size:.75rem;margin-top:4px}.stat-change.positive{color:var(--accent-success)}.stat-change.negative{color:var(--accent-danger)}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--radius);font-size:.875rem;font-weight:500;border:none;transition:all .2s ease}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover{background:#2563eb}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background:#475569}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-color)}th{font-size:.75rem;font-weight:600;text-transform:uppercase;color:var(--text-secondary);background:var(--bg-tertiary)}tr:hover td{background:#ffffff05}.form-group{margin-bottom:16px}.form-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:6px;color:var(--text-secondary)}.form-input{width:100%;padding:10px 14px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius);color:var(--text-primary);font-size:.875rem}.form-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #3b82f633}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.login-card{width:100%;max-width:400px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:40px}.login-title{font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:8px}.login-subtitle{font-size:.875rem;color:var(--text-secondary);text-align:center;margin-bottom:32px}.chart-container{height:300px;width:100%}.page-header{margin-bottom:24px}.page-title{font-size:1.75rem;font-weight:700;margin-bottom:4px}.page-subtitle{font-size:.875rem;color:var(--text-secondary)}.loading{display:flex;align-items:center;justify-content:center;padding:40px}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;font-size:.875rem}.alert-error{background:#ef44441a;border:1px solid var(--accent-danger);color:var(--accent-danger)}.alert-success{background:#22c55e1a;border:1px solid var(--accent-success);color:var(--accent-success)}