:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-card: #283548;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-accent: #38bdf8;--primary: #3b82f6;--primary-hover: #2563eb;--danger: #ef4444;--success: #22c55e;--warning: #eab308;--sidebar-width: 250px;--header-height: 64px;--radius: 8px;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--font-sans: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;background:none;font-family:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius);font-weight:500;transition:all .2s}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background-color:var(--bg-secondary);border-right:1px solid rgba(255,255,255,.05);display:flex;flex-direction:column}.main-content{flex:1;display:flex;flex-direction:column}.header{height:var(--header-height);background-color:var(--bg-primary);border-bottom:1px solid rgba(255,255,255,.05);display:flex;align-items:center;padding:0 1.5rem}.container{padding:2rem;max-width:1200px;margin:0 auto;width:100%}h1,h2,h3{letter-spacing:-.025em;font-weight:600}