:root{--color-primary:#3b82f6;--color-primary-hover:#2563eb;--color-secondary:#64748b;--color-background:#0f172a;--color-surface:#1e293b;--color-surface-hover:#334155;--color-text:#f8fafc;--color-text-muted:#94a3b8;--color-border:#334155;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--spacing-1:.25rem;--spacing-2:.5rem;--spacing-3:.75rem;--spacing-4:1rem;--spacing-5:1.25rem;--spacing-6:1.5rem;--spacing-8:2rem;--radius-sm:.25rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--radius-full:9999px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--color-background);color:var(--color-text);-webkit-font-smoothing:antialiased;line-height:1.5}.app-container{height:100vh;display:flex;overflow:hidden}.main-content{flex-direction:column;flex:1;display:flex;overflow:hidden}.page-container{padding:var(--spacing-6);flex:1;overflow-y:auto}.card{background-color:var(--color-surface);border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:var(--spacing-6);box-shadow:var(--shadow-md)}.btn{justify-content:center;align-items:center;gap:var(--spacing-2);padding:var(--spacing-2) var(--spacing-4);border-radius:var(--radius-md);cursor:pointer;border:none;font-size:.875rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-hover)}.btn-outline{border:1px solid var(--color-border);color:var(--color-text);background-color:#0000}.btn-outline:hover{background-color:var(--color-surface-hover)}.form-group{gap:var(--spacing-2);margin-bottom:var(--spacing-4);flex-direction:column;display:flex}.form-label{color:var(--color-text-muted);font-size:.875rem;font-weight:500}.form-input{background-color:var(--color-background);border:1px solid var(--color-border);color:var(--color-text);padding:var(--spacing-2) var(--spacing-3);border-radius:var(--radius-md);font-family:inherit;font-size:.875rem;transition:border-color .2s}.form-input:focus{border-color:var(--color-primary);outline:none}h1{margin-bottom:var(--spacing-4);font-size:1.5rem;font-weight:600}h2{margin-bottom:var(--spacing-3);font-size:1.25rem;font-weight:600}table{border-collapse:collapse;width:100%}th,td{padding:var(--spacing-3);text-align:left;border-bottom:1px solid var(--color-border)}th{color:var(--color-text-muted);font-size:.875rem;font-weight:500}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:.3s ease-out forwards fadeIn}.sidebar{background-color:var(--color-surface);border-right:1px solid var(--color-border);flex-direction:column;width:260px;display:flex}.sidebar-header{height:64px;padding:0 var(--spacing-4);border-bottom:1px solid var(--color-border);align-items:center;display:flex}.logo{align-items:center;gap:var(--spacing-3);display:flex}.logo-icon{background-color:var(--color-primary);border-radius:var(--radius-md);color:#fff;justify-content:center;align-items:center;width:32px;height:32px;font-weight:700;display:flex}.logo h2{color:var(--color-text);margin:0;font-size:1.125rem}.sidebar-nav{padding:var(--spacing-4) var(--spacing-2);gap:var(--spacing-1);flex-direction:column;display:flex}.nav-link{align-items:center;gap:var(--spacing-3);padding:var(--spacing-3) var(--spacing-4);border-radius:var(--radius-md);color:var(--color-text-muted);font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-link:hover{background-color:var(--color-surface-hover);color:var(--color-text)}.nav-link.active{background-color:var(--color-primary);color:#fff}.header{background-color:var(--color-surface);border-bottom:1px solid var(--color-border);height:64px;padding:0 var(--spacing-6);justify-content:space-between;align-items:center;display:flex}.header-left,.header-right{align-items:center;gap:var(--spacing-4);display:flex}.page-title{margin:0;font-size:1.125rem;font-weight:500}.icon-btn{color:var(--color-text-muted);cursor:pointer;border-radius:var(--radius-full);background:0 0;border:none;justify-content:center;align-items:center;width:40px;height:40px;transition:background-color .2s;display:flex}.icon-btn:hover{background-color:var(--color-surface-hover);color:var(--color-text)}.user-profile{align-items:center;gap:var(--spacing-3);cursor:pointer;display:flex}.avatar{border-radius:var(--radius-full);background-color:var(--color-primary);color:#fff;justify-content:center;align-items:center;width:36px;height:36px;font-weight:600;display:flex}