body{margin:0;padding:0}#root,.app-layout{min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;gap:8px;flex-wrap:wrap;min-height:48px}.app-header-left,.app-header-center,.app-header-right{display:flex;align-items:center;gap:8px}.content-area{padding:24px;min-height:280px}.sidebar-logo{height:48px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.1);color:#ffffffd9}.team-cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-bottom:24px}.team-card{cursor:pointer;transition:border-color .3s}.student-score-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}.score-card{text-align:center}.score-value{font-size:36px;font-weight:700;cursor:pointer;padding:4px 8px;border-radius:4px;transition:background .2s;-webkit-user-select:none;user-select:none}.score-value:hover{background:color-mix(in srgb,currentColor 8%,transparent)}.score-buttons{display:flex;justify-content:center;gap:8px;margin-top:12px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;text-align:center}@media(max-width:768px){.app-header{flex-direction:column;align-items:stretch;gap:4px}.app-header-center{justify-content:center}.app-header-right{justify-content:flex-end}.content-area{padding:12px}}