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0}}.skeleton{background:linear-gradient(90deg,var(--surface-2)25%,var(--surface-3)50%,var(--surface-2)75%);background-size:600px 100%;border-radius:8px;animation:1.4s linear infinite shimmer}.rank-badge{background:var(--surface-2);border:1px solid var(--border);width:26px;height:26px;color:var(--muted);border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;font-size:.75rem;font-weight:700;display:inline-flex}.rank-gold{color:#78350f;background:linear-gradient(135deg,#fde68a,#f59e0b);border-color:#f59e0b}.rank-silver{color:#374151;background:linear-gradient(135deg,#e5e7eb,#9ca3af);border-color:#9ca3af}.rank-bronze{color:#7c2d12;background:linear-gradient(135deg,#fed7aa,#d97706);border-color:#d97706}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:460px;padding:32px}.portal-tile{border-radius:var(--radius-lg);border:2px solid var(--border);background:var(--surface-2);cursor:pointer;text-align:left;align-items:center;gap:14px;width:100%;padding:16px 18px;font-family:inherit;transition:border-color .16s,background .16s,box-shadow .16s;display:flex}.portal-tile:hover{border-color:var(--border-strong);background:var(--surface);box-shadow:var(--shadow-sm)}.portal-tile.active{border-color:var(--primary);background:var(--primary-light);box-shadow:var(--ring)}.portal-tile-icon{flex-shrink:0;font-size:1.5rem;line-height:1}.portal-tile-title{color:var(--fg);font-size:1rem;font-weight:650}.portal-tile-desc{color:var(--muted);margin-top:1px;font-size:.8rem}.theme-toggle{background:var(--surface-3);border:1px solid var(--border);cursor:pointer;border-radius:999px;flex-shrink:0;width:40px;height:22px;padding:0;transition:background .2s;position:relative}.theme-toggle.on{background:var(--primary);border-color:var(--primary)}.theme-toggle-knob{background:#fff;border-radius:50%;width:16px;height:16px;transition:transform 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(min-width:900px){.grid-3{grid-template-columns:repeat(3,1fr)}}.grid-4{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}@media (min-width:900px){.grid-4{grid-template-columns:repeat(4,1fr)}}.actions{flex-wrap:wrap;align-items:center;gap:6px;display:inline-flex}@media (max-width:767px){.admin-main,.grader-main{padding:12px}.panel{padding:16px}.panel-sm{padding:12px}.admin-topnav{gap:6px;height:52px;padding:0 12px}.admin-topnav-brand{gap:6px;font-size:.85rem}.topnav-app-name,.admin-topnav-desktop-nav,.admin-topnav-desktop-logout{display:none}.mobile-nav-drawer{background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);z-index:60;flex-direction:column;gap:4px;padding:12px;display:flex;position:fixed;top:52px;left:0;right:0}.mobile-nav-drawer .topnav-link{border-radius:var(--radius-sm);padding:10px 14px;font-size:.95rem}.mobile-nav-divider{background:var(--border);height:1px;margin:6px 0}.grader-topbar{gap:6px;height:52px;padding:0 12px}.grader-topbar-brand{gap:6px;font-size:.82rem}.grader-brand-name{display:none}.contest-layout{gap:12px;grid-template-columns:1fr!important}.contest-sidebar{border-radius:var(--radius-lg);padding:6px 8px;position:static!important}.contest-sidebar .sidebar-label{display:none}.contest-sidebar nav{-webkit-overflow-scrolling:touch;gap:2px;padding-bottom:2px;overflow-x:auto;flex-direction:row!important}.contest-sidebar nav::-webkit-scrollbar{display:none}.sidebar-link{white-space:nowrap;flex-shrink:0;padding:7px 12px;font-size:.82rem}.modal{align-items:flex-end;padding:0}.modal-box{max-height:92vh;border-radius:20px 20px 0 0!important;max-width:100%!important}.modal-header,.modal-body{padding:14px 16px}.panel-head{flex-direction:column;align-items:flex-start;gap:10px}.panel-head-actions{justify-content:flex-start;width:100%}.controls{flex-direction:column}.controls .input,.controls .select{max-width:100%}.grid-3{grid-template-columns:repeat(2,1fr)!important}.btn-logout-text{display:none}}.hamburger-btn{display:none}@media (max-width:767px){.hamburger-btn{display:inline-flex}}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}