/* ===========================================================
   Header unificado CodeToBrand
   Cárgalo en TODAS las páginas DESPUÉS de theme.css.
   Todo está acotado a <nav> para no afectar el resto del diseño.
   Compatible con theme.css (modo oscuro) y theme.js (toggle + logo).
   =========================================================== */
nav{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line,#e5e7eb)}
nav .nav-inner{width:min(1180px,calc(100% - 48px));margin:0 auto;padding:0;min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:14px}
nav .logo{flex:0 0 auto;display:inline-flex;align-items:center}
nav .logo img{display:block;width:178px;max-width:none;height:auto}
nav .nav-links{display:flex;align-items:center;gap:18px;list-style:none;margin:0 0 0 auto;padding:0;min-width:0}
nav .nav-links li{margin:0}
nav .nav-links a{text-decoration:none;color:var(--gray,#626b7b);font-size:14px;font-weight:600;white-space:nowrap}
nav .nav-links a:hover,nav .nav-links a[aria-current=page]{color:var(--ink,#0d1117)}
nav .nav-inner>.btn{flex:0 0 auto}
nav .btn{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 18px;border-radius:14px;text-decoration:none;font-weight:700;font-size:14px;line-height:1.2;white-space:nowrap;border:0;cursor:pointer}
nav .btn-primary{background:var(--grad,linear-gradient(135deg,#4f46e5 0%,#2563eb 46%,#a855f7 100%));color:#fff;box-shadow:0 12px 30px rgba(79,70,229,.22)}
nav .menu{display:none;position:relative}
nav .menu summary{list-style:none;cursor:pointer;width:42px;height:42px;border:1px solid var(--line,#e5e7eb);border-radius:12px;display:grid;place-items:center;font-size:0;background:var(--theme-surface,#fff)}
nav .menu summary::-webkit-details-marker{display:none}
nav .menu summary::after{content:'\2630';font-size:21px}
nav .menu[open] summary::after{content:'\00d7'}
nav .menu>div{position:absolute;right:0;top:52px;width:min(290px,calc(100vw - 32px));padding:12px;background:var(--theme-surface,#fff);border:1px solid var(--line,#e5e7eb);border-radius:16px;box-shadow:0 20px 45px rgba(13,17,23,.14);display:grid;gap:2px}
nav .menu>div a{padding:10px 12px;text-decoration:none;border-radius:10px;font-weight:600;font-size:14px;color:var(--ink,#0d1117)}
nav .menu>div a:hover{background:var(--soft,#eef0fe)}
@media(max-width:900px){nav .nav-links,nav .nav-inner>.btn{display:none}nav .menu{display:block}}