*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif}
a{text-decoration:none;color:inherit}

:root{--bg:#ffffff;--secondary:#f4f4f4;--text:#242734;--accent:#4169e1;--border:#e0e0e0;--shadow:rgba(0,0,0,0.06)}
[data-theme="dark"]{--bg:#1a1d2e;--secondary:#242734;--text:#f4f4f4;--accent:#5b8dee;--border:#3a3d4e;--shadow:rgba(0,0,0,0.22)}

.navbar{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--border);box-shadow:0 1px 8px var(--shadow);z-index:1000}
.navbar-container{max-width:1200px;margin:0 auto;padding:0 16px;height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px}

.logo-box{padding:8px 12px;border-radius:8px;background:linear-gradient(135deg,#4169e1,#5b8dee);color:#fff;display:inline-flex;align-items:baseline;transform:translateZ(0);transition:transform .2s ease}
.logo-box:hover{transform:translateY(-1px)}
.logo-text{font-weight:700;letter-spacing:.5px;font-size:14px}
.logo-subtext{font-weight:700;font-size:14px;margin-left:4px}

.nav-menu{list-style:none;display:flex;align-items:center;gap:8px;margin:0;padding:0}
.nav-item .nav-link{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:8px;color:var(--text)}
.nav-item .nav-link:hover{background:var(--secondary)}
.nav-item .nav-link.active{background:color-mix(in oklab,var(--accent) 10%,transparent);color:var(--accent)}

.nav-icon-img,.nav-icon{width:20px;height:20px;color:var(--text)}
.dropdown-arrow{width:16px;height:16px;margin-left:4px;transition:transform .2s ease;color:var(--text)}
.has-dropdown{position:relative}
.has-dropdown:hover .dropdown-arrow{transform:rotate(180deg)}
.has-dropdown.open .dropdown-arrow{transform:rotate(180deg)}

.dropdown-menu{position:absolute;top:100%;left:0;min-width:240px;background:var(--bg);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px var(--shadow);padding:8px;display:none}
.has-dropdown:hover .dropdown-menu{display:block}
.dropdown-menu li{list-style:none}
.dropdown-menu a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:8px;white-space:nowrap}
.dropdown-menu a:hover{background:var(--secondary);color:var(--accent)}
.submenu-icon{width:18px;height:18px}
.badge-new{font-size:11px;color:#fff;background:var(--accent);border-radius:9999px;padding:2px 6px;margin-left:6px}

.has-submenu{position:relative}
.has-submenu>.submenu{position:absolute;top:0;left:100%;min-width:200px;background:var(--bg);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px var(--shadow);padding:8px;display:none}
.has-submenu:hover>.submenu{display:block}

.navbar-actions{display:flex;align-items:center;gap:10px}
.theme-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--secondary);cursor:pointer;transition:background .2s,color .2s,transform .2s;color:var(--text)}
.theme-toggle:hover{transform:translateY(-1px)}
.sun-icon,.moon-icon{width:20px;height:20px}
.moon-icon{display:none}
[data-theme="dark"] .sun-icon{display:none}
[data-theme="dark"] .moon-icon{display:block}
[data-theme="dark"] .theme-toggle{background:#202437;color:#e8eaed;border-color:#32374b}

.mobile-menu-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--secondary);padding:8px;gap:4px;flex-direction:column;justify-content:center;align-items:center;cursor:pointer}
.mobile-menu-toggle span{display:block;width:100%;height:2px;background:var(--text)}

@media (max-width:1024px){.nav-menu{gap:6px}.dropdown-menu{min-width:220px}}
@media (max-width:768px){.navbar-container{height:auto;padding:12px 16px;flex-wrap:wrap;row-gap:12px}.navbar-logo{order:0}.navbar-actions{order:1;margin-left:auto}.nav-menu{order:2;display:none;width:100%;flex-direction:column;align-items:flex-start;gap:4px}.menu-open .nav-menu{display:flex}.nav-item .nav-link{padding:8px 10px}.dropdown-menu,.submenu{position:static;display:none}.has-dropdown:hover .dropdown-menu{display:none}.has-submenu:hover>.submenu{display:none}.has-dropdown.open>.dropdown-menu{display:block}.has-submenu.open>.submenu{display:block}.mobile-menu-toggle{display:flex}}