/* ── CALCULIXY NAV SHELL FIX v1.0 ──
   Restores desktop navigation, dropdowns, mobile drawer, and overlay layout. */
.site-header,
.nav-shell,
nav[aria-label="Primary navigation"]{
  position:sticky;
  top:0;
  z-index:1000;
  width:100%;
  min-height:64px;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border,#dfe2f2);
}
.nav-wrap,
nav[aria-label="Primary navigation"]{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  width:100%;
  min-height:64px;
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
}
.nav-logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  min-width:max-content;
  color:var(--text,#09091b);
  text-decoration:none;
  font-family:var(--font-display,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif);
  font-size:18px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
}
.nav-logo span{color:var(--accent,#10b981);line-height:1;}
.nav-tools{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  flex:1 1 auto;
  min-width:0;
}
.nav-group{position:relative;display:inline-flex;align-items:center;}
.nav-btn,
.nav-all-tools-btn,
.cx-hamburger,
.cx-drawer-close,
.cx-drawer-cat-btn{
  font-family:var(--font-display,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif);
  touch-action:manipulation;
}
.nav-btn,
.nav-all-tools-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  border-radius:999px;
  border:1px solid transparent;
  background:transparent;
  color:var(--nav,#292932);
  padding:0 12px;
  font-size:13px;
  font-weight:700;
  line-height:1;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease;
}
.nav-btn:hover,
.nav-btn:focus-visible,
.nav-btn.active,
.nav-all-tools-btn:hover,
.nav-all-tools-btn:focus-visible{
  background:var(--surface2,#f0f3ff);
  color:var(--text,#09091b);
  border-color:var(--border,#dfe2f2);
  outline:none;
}
.nav-btn.active{color:var(--accent,#10b981);}
.nav-menu{
  position:absolute;
  top:calc(100% + 10px);
  left:50%;
  z-index:1100;
  display:grid;
  grid-template-columns:minmax(210px,1fr);
  gap:4px;
  min-width:260px;
  max-width:min(420px,calc(100vw - 32px));
  padding:10px;
  border:1px solid var(--border,#dfe2f2);
  border-radius:16px;
  background:var(--surface,#fff);
  box-shadow:0 24px 70px rgba(15,23,42,.16);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translate(-50%,8px);
  transition:opacity .14s ease,transform .14s ease,visibility .14s ease;
}
.nav-group.cx-open .nav-menu,
.nav-group:focus-within .nav-menu{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translate(-50%,0);
}
.nav-menu a{
  display:flex;
  align-items:center;
  gap:8px;
  width:100%;
  min-height:38px;
  padding:9px 10px;
  border-radius:10px;
  color:var(--text2,#50546a);
  font-size:13px;
  font-weight:650;
  line-height:1.25;
  text-decoration:none;
  white-space:normal;
}
.nav-menu a:hover,
.nav-menu a:focus-visible{
  background:var(--surface2,#f0f3ff);
  color:var(--text,#09091b);
  outline:none;
}
.cx-hamburger{
  display:none;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
  width:42px;
  height:42px;
  border:1px solid var(--border,#dfe2f2);
  border-radius:999px;
  background:var(--surface,#fff);
  color:var(--text,#09091b);
  cursor:pointer;
  box-shadow:0 8px 28px rgba(15,23,42,.06);
}
.cx-hamburger:hover,
.cx-hamburger:focus-visible{
  border-color:var(--accent,#10b981);
  outline:3px solid rgba(16,185,129,.16);
}
.cx-drawer-overlay{
  position:fixed;
  inset:0;
  z-index:9998;
  display:block;
  background:rgba(9,9,27,.48);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .2s ease,visibility .2s ease;
}
.cx-drawer-overlay.cx-open{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
}
.cx-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:9999;
  display:flex;
  flex-direction:column;
  width:min(420px,92vw);
  max-width:92vw;
  min-height:100dvh;
  padding:0;
  background:var(--surface,#fff);
  border-left:1px solid var(--border,#dfe2f2);
  box-shadow:-24px 0 80px rgba(15,23,42,.22);
  transform:translateX(100%);
  visibility:hidden;
  transition:transform .24s ease,visibility .24s ease;
  overflow:hidden;
}
.cx-drawer.cx-open{
  transform:translateX(0);
  visibility:visible;
}
.cx-drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex:0 0 auto;
  min-height:64px;
  padding:14px 18px;
  border-bottom:1px solid var(--border,#dfe2f2);
}
.cx-drawer-logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text,#09091b);
  font-size:18px;
  font-weight:800;
  letter-spacing:-.04em;
  text-decoration:none;
}
.cx-drawer-logo span{color:var(--accent,#10b981);}
.cx-drawer-close{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:999px;
  border:1px solid var(--border,#dfe2f2);
  background:var(--surface2,#f0f3ff);
  color:var(--text,#09091b);
  font-weight:800;
  cursor:pointer;
}
.cx-drawer-body{
  flex:1 1 auto;
  overflow:auto;
  padding:12px 14px 24px;
  -webkit-overflow-scrolling:touch;
}
.cx-drawer-cat{border-bottom:1px solid var(--border,#dfe2f2);}
.cx-drawer-cat-btn{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  width:100%;
  min-height:48px;
  border:0;
  background:transparent;
  color:var(--text,#09091b);
  padding:12px 4px;
  font-size:15px;
  font-weight:800;
  text-align:left;
  cursor:pointer;
}
.cx-drawer-cat-chevron{transition:transform .18s ease;}
.cx-drawer-cat-btn.cx-open .cx-drawer-cat-chevron{transform:rotate(90deg);}
.cx-drawer-cat-links{
  display:none;
  grid-template-columns:1fr;
  gap:4px;
  padding:0 0 12px;
}
.cx-drawer-cat-links.cx-open{display:grid;}
.cx-drawer-cat-links a,
.cx-drawer-util a{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:10px 12px;
  border-radius:10px;
  color:var(--text2,#50546a);
  background:transparent;
  font-size:14px;
  font-weight:650;
  line-height:1.25;
  text-decoration:none;
}
.cx-drawer-cat-links a:hover,
.cx-drawer-cat-links a:focus-visible,
.cx-drawer-util a:hover,
.cx-drawer-util a:focus-visible{
  background:var(--surface2,#f0f3ff);
  color:var(--text,#09091b);
  outline:none;
}
.cx-drawer-util{
  display:grid;
  grid-template-columns:1fr;
  gap:6px;
  padding-top:14px;
}
@media(max-width:980px){
  nav[aria-label="Primary navigation"],.nav-wrap{padding:0 16px;}
  .nav-tools{display:none;}
  .nav-all-tools-btn{display:none;}
  .cx-hamburger{display:inline-flex;}
}
@media(max-width:520px){
  nav[aria-label="Primary navigation"],.nav-wrap{min-height:60px;padding:0 14px;}
  .nav-logo{font-size:17px;}
  .cx-drawer{width:94vw;max-width:94vw;}
  .cx-drawer-head{min-height:60px;padding:12px 14px;}
  .cx-drawer-body{padding:10px 12px 22px;}
}

/* Navigation interaction support */
html.cx-drawer-lock,
body.cx-drawer-lock {
  overflow: hidden !important;
  overscroll-behavior: contain;
}
.nav-group.cx-open .nav-menu {
  display: block;
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}
.cx-drawer-overlay.cx-open {
  display: block;
  opacity: 1;
  pointer-events: auto;
}
.cx-drawer.cx-open {
  display: flex;
  transform: translateX(0);
  visibility: visible;
}

/* ── NAVBAR SHELL v2.0 ──────────────────────────────────────────────
   Top-level .navbar wrapper + .cx-main-layout-fix content container.
   Works alongside existing nav[aria-label="Primary navigation"] rules above.
   All tokens from :root in shared.css — no new variables introduced.  */

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: rgba(255,255,255,0.94);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border, #e0e0ee);
  display: flex;
  align-items: center;
  padding: 0 24px;
  min-height: 60px;
}

.navbar-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  min-width: max-content;
  font-family: var(--font-display, 'Syne', system-ui, sans-serif);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text, #0a0a1a);
  text-decoration: none;
  line-height: 1;
}

.navbar-brand span { color: var(--accent, #10b981); }

.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-display, 'Syne', system-ui, sans-serif);
  font-size: 13px;
  font-weight: 600;
  color: var(--text2, #4a4a6a);
  text-decoration: none;
  padding: 7px 13px;
  border-radius: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
  white-space: nowrap;
  line-height: 1;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: var(--surface2, #f0f0f8);
  color: var(--text, #0a0a1a);
  outline: none;
}

.nav-link.active,
.nav-link[aria-current="page"] {
  color: var(--accent, #10b981);
  background: rgba(16,185,129,0.08);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: 8px;
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-display, 'Syne', system-ui, sans-serif);
  font-size: 12px;
  font-weight: 700;
  color: var(--text2, #4a4a6a);
  background: var(--surface2, #f0f0f8);
  border: 1px solid var(--border, #e0e0ee);
  border-radius: 8px;
  padding: 7px 13px;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
  white-space: nowrap;
  line-height: 1;
}

.nav-cta-btn:hover,
.nav-cta-btn:focus-visible {
  border-color: var(--accent, #10b981);
  color: var(--accent, #10b981);
  background: rgba(16,185,129,0.07);
  outline: none;
}

/* ── CONTENT WRAPPER ────────────────────────────────────────────── */

.cx-main-layout-fix {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px;
  width: 100%;
}

/* ── RESPONSIVE BREAKPOINTS ─────────────────────────────────────── */

@media (max-width: 980px) {
  .navbar-links { display: none; }
}

@media (max-width: 700px) {
  .navbar { padding: 0 14px; min-height: 56px; }
  .navbar-brand { font-size: 17px; }
  .nav-cta-btn { display: none; }
  .cx-main-layout-fix { padding: 20px 16px; }
}