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.25rem;font-size:1.15rem}.all-pass-subtitle{color:var(--color-muted-foreground);font-size:.82rem}.hamburger-btn{z-index:90;background:var(--color-card);border:1px solid var(--color-border);width:44px;height:44px;color:var(--color-primary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;display:none;position:fixed;top:1rem;left:1rem;box-shadow:0 2px 8px #0000001a}.sidebar-overlay{z-index:98;background:#0006;display:none;position:fixed;top:0;right:0;bottom:0;left:0}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#1a315033;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#1a31504d}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{transform:translate(100%)}to{transform:translate(0)}}@keyframes pulse-subtle{0%,to{opacity:1}50%{opacity:.6}}.animate-fade-in{animation:.35s ease-out both fadeSlideIn}@media(max-width:900px){.app-layout{grid-template-columns:1fr}.sidebar{z-index:99;width:280px;max-width:85vw;box-shadow:none;transition:transform .3s;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0);box-shadow:4px 0 20px #0000001a}.sidebar-header-top{justify-content:flex-end;margin-bottom:.5rem;display:flex}.sidebar-overlay.visible{animation:.2s fadeIn;display:block}.hamburger-btn{display:flex}.main-content{padding:4rem 1.5rem 1.5rem}.hero-title{font-size:2rem}.hero-subtitle{font-size:1.5rem}.challenge-grid{grid-template-columns:1fr}.stats-bar{gap:1rem}.theory-panel{width:100%;max-width:100%}}@media(min-width:768px)and (max-width:1024px){button,select,input,.touch-target{min-height:48px}.nav-item{align-items:center;min-height:44px;display:flex}.folder-header{min-height:48px}}@media(max-width:640px){button,select,input,.touch-target{min-height:44px}.editor-textarea{font-size:1.25rem}.challenge-title{font-size:1.3rem}.refactor-banner{text-align:center;flex-direction:column}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}