:root{--primary-yellow: #FFD700;--primary-blue: #002D62;--secondary-blue: #0056b3;--bg-light: #f8f9fa;--text-dark: #212529;--text-muted: #6c757d;--white: #ffffff;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-light);color:var(--text-dark)}.sidebar{width:260px;height:100vh;background-color:var(--primary-blue);color:var(--white);position:fixed;left:0;top:0;display:flex;flex-direction:column}.sidebar-header{padding:2rem;font-size:1.5rem;font-weight:700;color:var(--primary-yellow);text-align:center;border-bottom:1px solid rgba(255,255,255,.1)}.nav-links{flex:1;padding:1rem 0}.nav-link{display:block;padding:.75rem 2rem;color:#fffc;text-decoration:none;transition:all .2s}.nav-link:hover,.nav-link.active{background-color:#ffffff1a;color:var(--primary-yellow)}.main-content{margin-left:260px;padding:2rem}.card{background:var(--white);border-radius:8px;padding:1.5rem;box-shadow:var(--shadow);margin-bottom:1.5rem}h1{margin-bottom:1.5rem;color:var(--primary-blue)}button{cursor:pointer;padding:.5rem 1rem;border-radius:4px;border:none;font-weight:600;transition:opacity .2s}.btn-primary{background-color:var(--primary-yellow);color:var(--primary-blue)}.btn-primary:hover{opacity:.9}