.navbar{background:var(--color-nav-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:50;padding:0 1.5rem;transition:background-color .2s ease,border-color .2s ease}.navbar-container{max-width:1200px;margin:0 auto;display:flex;align-items:center;height:64px;justify-content:space-between}.navbar-container.full-width{max-width:100%;padding:0 1rem}.navbar-desktop{display:flex;align-items:center;gap:2rem}.navbar-brand{font-size:1.5rem;font-weight:700;color:var(--color-text);text-decoration:none;transition:opacity .3s ease}.navbar-brand:hover{opacity:.8}.navbar-nav{display:flex;list-style:none;padding:0;margin:0;gap:1.8rem}.navbar-nav li a{color:var(--color-text-muted);font-size:1rem;font-weight:600;transition:color .2s}.navbar-nav li a:hover{color:var(--color-text)}.auth-separator{width:1px;height:16px;background-color:var(--color-border);margin:0 .2rem;align-self:center}.nav-login{font-weight:600}.navbar-mobile-toggle{display:none}.menu-btn{background:transparent;border:none;color:var(--color-text);cursor:pointer;padding:.5rem;display:flex;align-items:center;justify-content:center;border-radius:.5rem;transition:background-color .2s}.menu-btn:hover{background-color:var(--color-surface)}.sidebar{position:fixed;top:0;right:-300px;width:300px;height:100vh;background:var(--color-nav-bg);z-index:1001;transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;box-shadow:-5px 0 15px #0000001a}.sidebar.active{transform:translate(-300px)}.sidebar-header{padding:1rem 1.5rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--color-border)}.close-btn{background:transparent;border:none;color:var(--color-text);cursor:pointer;padding:.5rem;display:flex;align-items:center;justify-content:center;border-radius:.5rem}.sidebar-content{flex:1;padding:2rem 1.5rem;display:flex;flex-direction:column;justify-content:space-between}.sidebar-nav{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:1.5rem}.sidebar-nav li a{color:var(--color-text);font-size:1.25rem;font-weight:600;text-decoration:none;display:block;transition:color .2s}.sidebar-separator{height:1px;background-color:var(--color-border);margin:.5rem 0}.sidebar-footer{margin-top:auto;padding-top:2rem}.mobile-theme-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:.75rem;color:var(--color-text);cursor:pointer}.theme-label{font-weight:600}.theme-icons{display:flex;align-items:center}.sidebar-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;z-index:1000;opacity:0;pointer-events:none;transition:opacity .3s ease;backdrop-filter:blur(2px)}.sidebar-overlay.active{opacity:1;pointer-events:auto}.theme-toggle{background:transparent;border:none;cursor:pointer;font-size:1.3rem;padding:.5rem;border-radius:50%;transition:background-color .3s;color:var(--color-text);display:flex;align-items:center;justify-content:center;width:40px;height:40px}.theme-toggle:hover{background-color:var(--color-surface)}.theme-toggle>svg{width:22px;height:22px}@media(max-width:768px){.navbar-desktop{display:none}.navbar-mobile-toggle{display:block}.navbar{padding:0 1rem}}:root[data-theme=light] .icon-sun,:root:not([data-theme=dark]) .icon-sun{display:none}:root[data-theme=light] .icon-moon,:root:not([data-theme=dark]) .icon-moon{display:block}:root[data-theme=dark] .icon-sun{display:block}:root[data-theme=dark] .icon-moon{display:none}.footer{border-top:1px solid var(--color-border);padding:2.5rem 1.5rem;margin-top:5rem;text-align:center;color:var(--color-text-muted);font-size:.9rem;transition:border-color .3s ease,color .3s ease}.footer-container{max-width:1200px;margin:0 auto}:root,:root[data-theme=light]{--color-bg: #f4f6f8;--color-text: #1a1a1a;--color-text-muted: #666666;--color-border: #dcdcdc;--color-nav-bg: #ffffff;--color-surface: #ffffff;--color-code-bg: #eeeeee;--color-code-text: #333333;--color-btn-1-bg: #0066cc;--color-btn-1-text: #ffffff;--color-btn-1-hover: #004c99;--color-btn-2-bg: #4a4a4a;--color-btn-2-text: #ffffff;--color-btn-2-hover: #333333}:root[data-theme=dark]{--color-bg: #121212;--color-text: #e0e0e0;--color-text-muted: #a0a0a0;--color-border: #333333;--color-nav-bg: #1e1e1e;--color-surface: #1e1e1e;--color-code-bg: #2a2a2a;--color-code-text: #cccccc;--color-btn-1-bg: #3b82f6;--color-btn-1-text: #ffffff;--color-btn-1-hover: #2563eb;--color-btn-2-bg: #555555;--color-btn-2-text: #ffffff;--color-btn-2-hover: #404040}body{font-family:Inter,sans-serif;margin:0;background-color:var(--color-bg);color:var(--color-text);padding:0;display:flex;flex-direction:column;min-height:100vh;transition:background-color .2s ease,color .2s ease}main{flex:1}*{box-sizing:border-box}a{text-decoration:none}