/* Shared public-site chrome. The application/dashboard shells intentionally do not load this file. */
.isnad-site-nav,
.isnad-site-footer,
.isnad-site-nav *,
.isnad-site-footer *{box-sizing:border-box}

.isnad-site-nav{
  position:fixed;top:0;left:0;right:0;z-index:999;height:64px;
  background:var(--nav-bg,rgba(255,255,255,.88));
  color:var(--text,#1e293b);
  border-bottom:1px solid var(--nav-border,var(--border,rgba(15,23,42,.08)));
  box-shadow:none;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  font-family:var(--font,'Inter',system-ui,-apple-system,sans-serif);
  transition:background .3s,border-color .3s,top .3s;
}
.top-banner + .isnad-site-nav{top:38px}
.isnad-site-nav .nav-inner{
  width:100%;max-width:1200px;height:100%;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:8px;
}
.isnad-site-nav a{text-decoration:none}
.isnad-site-nav .nav-logo{
  display:flex;align-items:center;gap:8px;margin-right:auto;flex:0 0 auto;
  color:inherit;text-decoration:none;
}
.isnad-site-nav .nav-logo svg{width:28px;height:28px;display:block}
.isnad-site-nav .nav-logo span{
  font-size:18px;font-weight:800;line-height:1;
  background:linear-gradient(135deg,var(--accent,#6366f1),var(--accent2,#8b5cf6));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.isnad-site-nav .nav-links{display:flex;align-items:center;gap:2px}
.isnad-site-nav .nav-link{
  display:inline-flex;align-items:center;padding:8px 14px;border:0;border-radius:6px;
  background:transparent;color:var(--text2,var(--text-muted,#475569));
  font:600 13px/1 var(--font,'Inter',system-ui,sans-serif);white-space:nowrap;
  cursor:pointer;transition:background .2s,color .2s;
}
.isnad-site-nav .nav-link i{margin-right:5px;font-size:12px}
.isnad-site-nav .nav-link:hover,
.isnad-site-nav .nav-link.is-current{
  color:var(--accent,#6366f1);background:var(--tag-bg,rgba(99,102,241,.08));
}
.isnad-site-nav .nav-cta{
  display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border:0;border-radius:6px;
  background:var(--accent,#6366f1);color:#fff;
  font:700 13px/1.2 var(--font,'Inter',system-ui,sans-serif);white-space:nowrap;
  cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s;
}
.isnad-site-nav .nav-cta:hover{
  background:var(--accent2,#8b5cf6);transform:translateY(-1px);
  box-shadow:0 4px 12px rgba(99,102,241,.3);
}
.isnad-site-nav .nav-hamburger{
  display:none;width:38px;height:38px;align-items:center;justify-content:center;
  border:0;border-radius:8px;background:transparent;color:var(--text,#1e293b);
  font-size:20px;cursor:pointer;
}

/* Tools and Learn menus */
.isnad-site-nav .nav-tools{position:relative}
.isnad-site-nav .nav-tools-btn{font-family:inherit}
.isnad-site-nav .nav-tools-chev{
  margin:0 0 0 5px;font-size:9px;vertical-align:1px;transition:transform .2s;
}
.isnad-site-nav .nav-tools.open .nav-tools-chev,
.isnad-site-nav .nav-tools:hover .nav-tools-chev{transform:rotate(180deg)}
.isnad-site-nav .nav-tools-panel{
  position:absolute;top:calc(100% + 10px);left:0;z-index:1000;min-width:280px;padding:8px;
  background:var(--surface,var(--bg3,#fff));
  border:1px solid var(--border,rgba(15,23,42,.1));border-radius:12px;
  box-shadow:0 12px 40px rgba(0,0,0,.14);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .2s;
}
.isnad-site-nav .nav-tools.open .nav-tools-panel,
.isnad-site-nav .nav-tools:hover .nav-tools-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.isnad-site-nav .nav-tools-item{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;
  color:inherit;text-decoration:none;transition:background .15s;
}
.isnad-site-nav .nav-tools-item:hover,
.isnad-site-nav .nav-tools-item.is-current{background:var(--tag-bg,rgba(99,102,241,.08))}
.isnad-site-nav .nti-icon{
  width:32px;height:32px;display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  border-radius:8px;background:var(--tag-bg,rgba(99,102,241,.1));
  color:var(--accent,#6366f1);font-size:13px;
}
.isnad-site-nav .nav-tools-item b{
  display:block;color:var(--text,#1e293b);font-size:13px;font-weight:700;line-height:1.25;
}
.isnad-site-nav .nav-tools-item small{
  display:block;margin-top:2px;color:var(--text3,var(--text-muted,#94a3b8));
  font-size:11px;font-weight:500;line-height:1.3;
}

/* Signed-in account menu */
.isnad-site-nav .nav-user{position:relative;margin-left:4px}
.isnad-site-nav .nav-user-btn{
  display:flex;align-items:center;gap:8px;padding:6px 12px;
  border:1px solid var(--border,rgba(15,23,42,.1));border-radius:6px;
  background:transparent;color:var(--text,#1e293b);
  font:600 13px/1 var(--font,'Inter',system-ui,sans-serif);cursor:pointer;
}
.isnad-site-nav .nav-user-btn:hover{border-color:var(--accent,#6366f1)}
.isnad-site-nav .nav-user-btn .avatar{
  width:28px;height:28px;display:flex;align-items:center;justify-content:center;
  border-radius:50%;background:var(--accent,#6366f1);color:#fff;font-size:12px;font-weight:700;
}
.isnad-site-nav .nav-user-btn .fa-chevron-down{
  color:var(--text3,#94a3b8);font-size:10px;transition:transform .2s;
}
.isnad-site-nav .nav-user.open .nav-user-btn .fa-chevron-down{transform:rotate(180deg)}
.isnad-site-nav .nav-dropdown{
  position:absolute;top:calc(100% + 8px);right:0;z-index:1001;min-width:240px;padding:6px;
  background:var(--surface,var(--bg3,#fff));
  border:1px solid var(--border,rgba(15,23,42,.1));border-radius:10px;
  box-shadow:0 12px 40px rgba(0,0,0,.14);
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .2s;
}
.isnad-site-nav .nav-user.open .nav-dropdown{
  opacity:1;visibility:visible;transform:translateY(0);
}
.isnad-site-nav .nav-drop-item{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:6px;
  color:var(--text2,var(--text-muted,#475569));
  font-size:13px;font-weight:500;text-decoration:none;cursor:pointer;
}
.isnad-site-nav .nav-drop-item:hover{
  color:var(--accent,#6366f1);background:var(--tag-bg,rgba(99,102,241,.08));
}
.isnad-site-nav .nav-drop-item i{width:16px;text-align:center;font-size:13px}
.isnad-site-nav .nav-drop-divider{height:1px;margin:4px 8px;background:var(--border,rgba(15,23,42,.1))}
.isnad-site-nav .nav-tier{
  margin-left:auto;padding:2px 7px;border-radius:999px;
  color:var(--accent,#6366f1);background:var(--tag-bg,rgba(99,102,241,.12));
  font-size:10px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;
}

/* Landing-derived public footer */
.isnad-site-footer{
  width:100%;margin:0;padding:56px 0 0;
  background:var(--bg2,#eef0f6);color:var(--text,#1e293b);
  border-top:1px solid var(--border,rgba(15,23,42,.08));
  font-family:var(--font,'Inter',system-ui,-apple-system,sans-serif);
}
.isnad-site-footer .footer-inner{
  width:100%;max-width:1200px;margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.6fr;gap:40px;text-align:left;
}
.isnad-site-footer a{text-decoration:none}
.isnad-site-footer .nav-logo{
  display:inline-flex;align-items:center;gap:8px;color:inherit;text-decoration:none;
}
.isnad-site-footer .nav-logo span{
  font-size:18px;font-weight:800;
  background:linear-gradient(135deg,var(--accent,#6366f1),var(--accent2,#8b5cf6));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.isnad-site-footer .footer-brand p,
.isnad-site-footer .footer-col p{
  margin:10px 0 0;color:var(--text3,var(--text-muted,#94a3b8));
  font-size:13px;line-height:1.7;
}
.isnad-site-footer .footer-col p{margin:6px 0;font-size:12px;line-height:1.6}
.isnad-site-footer .footer-col h4{
  margin:0 0 14px;color:var(--text3,var(--text-muted,#94a3b8));
  font-size:12px;font-weight:700;letter-spacing:.6px;line-height:1.2;text-transform:uppercase;
}
.isnad-site-footer .footer-col a{
  display:flex;align-items:center;gap:8px;padding:4px 0;
  color:var(--text2,var(--text-muted,#475569));font-size:13px;line-height:1.35;
  transition:color .2s;
}
.isnad-site-footer .footer-col a:hover{color:var(--accent,#6366f1)}
.isnad-site-footer .footer-bottom{
  width:100%;max-width:1200px;margin:24px auto 0;padding:16px 24px;
  border-top:1px solid var(--border2,var(--border,rgba(15,23,42,.06)));
  color:var(--text3,var(--text-muted,#94a3b8));font-size:12px;line-height:1.5;text-align:center;
}
.isnad-site-footer .footer-bottom a{color:var(--accent,#6366f1);font-weight:600}

/* Added only on pages whose old header contained the sole theme control. */
.site-chrome-theme{
  position:fixed;right:24px;bottom:24px;z-index:998;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--border,rgba(15,23,42,.1));border-radius:50%;
  background:var(--surface,var(--bg3,#fff));color:var(--text2,#475569);
  box-shadow:0 12px 40px rgba(0,0,0,.12);cursor:pointer;
}
.site-chrome-theme:hover{border-color:var(--accent,#6366f1);background:var(--accent,#6366f1);color:#fff}

@media(max-width:980px){
  .isnad-site-footer .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:860px){
  .isnad-site-nav .nav-inner{padding:0 16px}
  .isnad-site-nav .nav-hamburger{display:flex;order:2}
  .isnad-site-nav .nav-links{
    position:absolute;top:100%;left:0;right:0;z-index:999;
    display:flex;flex-direction:column;align-items:stretch;gap:4px;padding:12px;
    background:var(--surface,var(--bg3,#fff));
    border-bottom:1px solid var(--border,rgba(15,23,42,.1));
    box-shadow:0 12px 24px rgba(0,0,0,.08);
    opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .2s;
  }
  .isnad-site-nav .nav-links.open{opacity:1;visibility:visible;transform:translateY(0)}
  .isnad-site-nav .nav-link{width:100%;justify-content:flex-start;padding:10px 12px}
  .isnad-site-nav .nav-tools{width:100%}
  .isnad-site-nav .nav-tools-panel{
    position:static;display:none;min-width:0;margin:2px 0 6px;padding:4px 0 4px 12px;
    border:0;box-shadow:none;background:transparent;opacity:1;visibility:visible;transform:none;
  }
  .isnad-site-nav .nav-tools.open .nav-tools-panel{display:block}
  .isnad-site-nav .nav-tools:hover .nav-tools-panel{display:none}
  .isnad-site-nav .nav-tools.open:hover .nav-tools-panel{display:block}
  .isnad-site-nav .nav-tools-item{padding:8px}
  .isnad-site-nav #guestNav{order:1;margin-left:auto}
  .isnad-site-nav #guestNav .nav-cta{padding:8px 12px}
  .isnad-site-nav .nav-user{order:1;margin-left:auto}
  .isnad-site-nav .nav-user-btn #userName{display:none}
}
@media(max-width:600px){
  .isnad-site-nav .nav-logo span{font-size:16px}
  .isnad-site-nav #guestNav .nav-cta span{display:none}
  .isnad-site-nav #guestNav .nav-cta{width:38px;height:38px;padding:0;justify-content:center}
  .isnad-site-footer .footer-inner{grid-template-columns:1fr;gap:28px;text-align:left}
  .site-chrome-theme{right:16px;bottom:16px}
}