/* NAV — compartido en todas las páginas */
nav{
  position:sticky;top:0;z-index:100;
  background:var(--nav-bg);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);transition:background .35s,border-color .35s;
}
.nav-inner{
  max-width:1100px;margin:0 auto;padding:0 32px;
  height:64px;display:flex;align-items:center;justify-content:space-between;
}
.logo{
  font-family:'Plus Jakarta Sans',sans-serif;font-size:22px;font-weight:800;
  color:var(--text);text-decoration:none;letter-spacing:-0.04em;transition:color .35s;
}
.logo span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{font-size:14px;color:var(--text-muted);text-decoration:none;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.active{font-weight:600}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-cta{
  background:var(--accent);color:#fff;border:none;
  padding:9px 20px;border-radius:8px;font-size:14px;font-weight:600;
  cursor:pointer;font-family:'DM Sans',sans-serif;text-decoration:none;
  transition:opacity .2s,transform .1s;
}
.nav-cta:hover{opacity:.85;transform:translateY(-1px)}
.theme-btn{
  width:36px;height:36px;border-radius:8px;
  background:var(--toggle-bg);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .2s;flex-shrink:0;
}
.theme-btn:hover{border-color:var(--border-accent)}
.theme-btn svg{stroke:var(--toggle-stroke);transition:stroke .35s}
.icon-sun,.icon-moon{display:block}
[data-theme="dark"] .icon-sun{display:none}
[data-theme="dark"] .icon-moon{display:block}
[data-theme="light"] .icon-sun{display:block}
[data-theme="light"] .icon-moon{display:none}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-cta{display:none}
}