/* ==========================================================================
   HEADER / ANNOUNCEMENT / MEGA MENUS / MOBILE NAV / LOGO
   ========================================================================== */

.top-stack{position:fixed;top:0;left:0;right:0;z-index:100;}

/* ANNOUNCEMENT */
.announce{
  height:var(--announce-h);
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(90deg,#0B1628,#132347 50%,#0B1628);
  color:rgba(255,255,255,.88);
  font-size:.8rem;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.06);
  overflow:hidden;
  transition:height .35s var(--ease),opacity .3s var(--ease);
}
.announce .container{display:flex;align-items:center;justify-content:center;gap:12px;white-space:nowrap;overflow:hidden;}
.announce b{background:var(--grad);color:#fff;font-size:.64rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:3px 9px;border-radius:var(--r-full);}
.announce a{color:#93C5FD;font-weight:600;display:inline-flex;align-items:center;gap:5px;}
.announce a:hover{color:#BFDBFE;}
.announce .hide-sm{display:inline;}
.top-stack.scrolled .announce{height:0;opacity:0;border-bottom-color:transparent;}

/* HEADER */
.site-header{
  height:var(--header-h);
  display:flex;align-items:center;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
}
.top-stack.scrolled .site-header{
  background:rgba(255,255,255,.85);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  backdrop-filter:saturate(180%) blur(18px);
  border-bottom-color:var(--border);
  box-shadow:0 1px 24px -12px rgba(16,24,40,.28);
}
.header-inner{
  width:min(var(--container),100% - 40px);margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  position:relative;
}

/* =========================================================
   BRAND / LOGO — SIMPLE: single image, no fallback, no swap
   ========================================================= */
.brand{
  display:flex;align-items:center;
  text-decoration:none;flex:0 0 auto;
}
.brand-logo{
  height:36px;width:auto;max-width:170px;display:block;
  transition:opacity .25s var(--ease);
}
.brand:hover .brand-logo{opacity:.82;}

/* NAV */
.nav{display:flex;align-items:center;gap:2px;}
.nav-item{position:static;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:var(--r-full);
  font-size:.9rem;font-weight:500;
  color:rgba(255,255,255,.78);
  transition:color .2s var(--ease),background .2s var(--ease);
  background:none;border:0;cursor:pointer;font-family:inherit;
}
.nav-link svg{width:13px;height:13px;opacity:.7;transition:transform .25s var(--ease);}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-item.open .nav-link{color:#fff;background:rgba(255,255,255,.08);}
.nav-item.open .nav-link svg{transform:rotate(180deg);}
.top-stack.scrolled .nav-link{color:#475569;}
.top-stack.scrolled .nav-link:hover,
.top-stack.scrolled .nav-item.open .nav-link{color:var(--text);background:var(--surface);}
.nav-link.active{color:#fff;background:rgba(255,255,255,.1);}
.top-stack.scrolled .nav-link.active{color:var(--primary);background:rgba(37,99,235,.08);}

.header-actions{display:flex;align-items:center;gap:10px;}
.login-link{font-size:.9rem;font-weight:600;color:rgba(255,255,255,.82);padding:10px 14px;border-radius:var(--r-full);transition:color .2s;text-decoration:none;}
.login-link:hover{color:#fff;}
.top-stack.scrolled .login-link{color:#475569;}
.top-stack.scrolled .login-link:hover{color:var(--text);}
.header-actions .btn-primary{padding:11px 20px;font-size:.88rem;}

/* =========================================================
   MEGA MENU BASE — NO display:grid here (that was the bug)
   ========================================================= */
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;
  transform:translateX(-50%) translateY(-8px);
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-xl);
  box-shadow:0 40px 90px -30px rgba(16,24,40,.4),0 0 0 1px rgba(255,255,255,.6) inset;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
  max-height:calc(100vh - 140px);
  overflow-y:auto;overscroll-behavior:contain;
}
.nav-item.open .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);}

/* -------- PRODUCTS MEGA (3-col: 2 link cols + 1 aside) -------- */
.mega--products{
  width:min(920px,calc(100vw - 40px));
  padding:22px;
  display:grid;grid-template-columns:1fr 1fr 240px;gap:20px;
}
.mega-col-title{font-size:.68rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:0 12px 10px;margin:0;}
.mega-link{display:flex;gap:12px;padding:11px 12px;border-radius:var(--r-md);transition:background .2s var(--ease),transform .2s var(--ease);text-decoration:none;color:inherit;}
.mega-link:hover{background:var(--surface);transform:translateX(2px);}
.mega-ico{width:36px;height:36px;border-radius:10px;flex:0 0 36px;display:flex;align-items:center;justify-content:center;background:var(--grad-soft);color:var(--primary);border:1px solid rgba(37,99,235,.12);}
.mega-ico svg{width:18px;height:18px;display:block;}
.mega-link strong{display:block;font-size:.88rem;font-weight:600;color:var(--text);letter-spacing:-.01em;}
.mega-link small{display:block;font-size:.76rem;color:var(--muted);line-height:1.45;margin-top:2px;}
.mega-aside{
  background:linear-gradient(150deg,#0B1628,#132347);
  border-radius:var(--r-lg);padding:22px;color:#fff;
  display:flex;flex-direction:column;justify-content:space-between;gap:16px;
  position:relative;overflow:hidden;
}
.mega-aside::before{content:'';position:absolute;width:180px;height:180px;right:-70px;top:-70px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.55),transparent 70%);}
.mega-aside h4{font-size:.98rem;position:relative;margin:0;}
.mega-aside p{font-size:.78rem;color:rgba(255,255,255,.6);margin-top:8px;position:relative;}
.mega-aside .btn{position:relative;font-size:.8rem;padding:9px 16px;}

/* -------- GRID MEGA (Channels / Solutions / Integrations) -------- */
.mega--grid{
  width:min(940px,calc(100vw - 40px));
  padding:24px;
  /* NO display:grid — this is now a normal block container */
}
.mega-grid-head{
  text-align:center;
  padding-bottom:18px;margin-bottom:18px;
  border-bottom:1px solid var(--border);
}
.mega-grid-head .mega-col-title{color:var(--primary);text-align:center;padding:0 0 8px;}
.mega-grid-head h4{font-size:1.1rem;font-weight:800;letter-spacing:-.025em;color:var(--text);margin:0 0 6px;}
.mega-grid-head p{font-size:.82rem;color:var(--muted);max-width:480px;margin-inline:auto;}
.mega-grid-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);text-align:center;}

.mega-grid{display:grid;gap:8px;}
.mega-grid--cols3{grid-template-columns:repeat(3,minmax(0,1fr));}
.mega-grid--cols4{grid-template-columns:repeat(4,minmax(0,1fr));}

.mega-item{
  display:flex;gap:10px;
  padding:12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:#fff;
  text-decoration:none;color:inherit;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  min-width:0;
}
.mega-item:hover{transform:translateY(-2px);border-color:#C7D2FE;box-shadow:var(--sh-md);}
.mega-item-ico{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
}
.mega-item-ico svg{width:18px;height:18px;display:block;}
.mega-item-body{min-width:0;flex:1;}
.mega-item strong{display:block;font-size:.83rem;font-weight:600;color:var(--text);letter-spacing:-.01em;line-height:1.3;}
.mega-item small{display:block;font-size:.71rem;color:var(--muted);line-height:1.4;margin-top:3px;}

/* Compact variant (icon on top, text below — for Solutions & Integrations) */
.mega-item--compact{
  flex-direction:column;align-items:center;text-align:center;
  gap:8px;padding:14px 10px;
}
.mega-item--compact .mega-item-ico{width:34px;height:34px;flex:0 0 34px;}
.mega-item--compact strong{font-size:.79rem;}
.mega-item--compact small{font-size:.66rem;}

/* BURGER */
.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  background:rgba(255,255,255,.06);cursor:pointer;
}
.burger i{display:block;width:17px;height:2px;background:#fff;border-radius:2px;transition:transform .3s var(--ease),opacity .3s;}
.top-stack.scrolled .burger{border-color:var(--border);background:#fff;}
.top-stack.scrolled .burger i{background:var(--text);}

/* MOBILE NAV */
.mobile-nav{
  position:fixed;inset:0;z-index:120;
  background:linear-gradient(170deg,#07111F,#0B1628 60%,#0F1D38);
  color:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform .42s var(--ease);
  overflow-y:auto;overscroll-behavior:contain;
}
.mobile-nav.open{transform:none;}
.mn-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;background:rgba(7,17,31,.9);backdrop-filter:blur(12px);z-index:2;}
.mn-head .brand-logo{height:32px;}
.mn-close{width:40px;height:40px;border-radius:12px;border:1px solid rgba(255,255,255,.16);display:grid;place-items:center;font-size:1.3rem;line-height:1;color:#fff;background:none;cursor:pointer;}
.mn-body{padding:14px 14px 0;flex:1;}
.mn-group{border-bottom:1px solid rgba(255,255,255,.07);}
.mn-group summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:16px 8px;font-size:1rem;font-weight:600;color:#fff;}
.mn-group summary::-webkit-details-marker{display:none;}
.mn-group summary::after{content:'+';font-size:1.25rem;color:#93C5FD;font-weight:400;transition:transform .25s var(--ease);}
.mn-group[open] summary::after{transform:rotate(45deg);}
.mn-links{padding:0 8px 14px;display:grid;gap:2px;}
.mn-links a{display:block;padding:11px 12px;border-radius:12px;font-size:.9rem;color:rgba(255,255,255,.7);transition:background .2s,color .2s;text-decoration:none;}
.mn-links a:hover{background:rgba(255,255,255,.06);color:#fff;}
.mn-simple{display:block;padding:16px 8px;font-size:1rem;font-weight:600;color:#fff;border-bottom:1px solid rgba(255,255,255,.07);text-decoration:none;}
.mn-foot{padding:20px 20px 32px;display:grid;gap:10px;}

/* RESPONSIVE */
@media (max-width:1100px){
  .mega--products{grid-template-columns:1fr 1fr;}
  .mega-aside{display:none;}
  .mega-grid--cols4{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:992px){
  .nav,.header-actions .login-link,.header-actions .btn-primary{display:none;}
  .burger{display:flex;}
}
@media (max-width:768px){
  .announce .hide-sm{display:none;}
  .mega-grid--cols3,
  .mega-grid--cols4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:480px){
  .mega-grid--cols3,
  .mega-grid--cols4{grid-template-columns:1fr;}
  .brand-logo{height:30px;}
}