/**
 * Header Styles - Topbar + Sticky Header + Mega Menus + Mobile Nav
 * Container: 1250px | Padding: 16px
 * @package Devansh_Starter v1.0.2
 */

:root {
  --green-light: #d4f161;
  --green-dark: #99bc12;
  --green-darker: #7a9600;
  --green-tint: #f4fad6;
  --green-subtle: #eaf5b0;
  --green-glow: rgba(153, 188, 18, 0.2);

  --black: #000000;
  --text-dark: #444242;
  --text-mid: #5c5a5a;
  --text-muted: #8a8888;
  --text-light: #b0aeae;

  --white: #ffffff;
  --bg: #ffffff;
  --bg-alt: #f7f7f6;

  --border: #e5e4e3;
  --border-hover: #d0cfce;

  --font-heading: 'Titillium Web', -apple-system, sans-serif;
  --font-body: 'Source Sans 3', -apple-system, sans-serif;

  --topbar-h: 40px;
  --header-h: 72px;
  --total-h: calc(var(--topbar-h) + var(--header-h));
  --container: 1250px;
  --gutter: 16px;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-pill: 100px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.07);
  --shadow-mega: 0 20px 60px rgba(0,0,0,0.12);

  --ease: 0.2s ease;
}

.mt-20 { margin-top: 20px; }
.header-spacer { height: var(--total-h); }

/* ================================================================
   TOPBAR
   ================================================================ */
.topbar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  max-width: none !important;
  z-index: 10001 !important;
  height: var(--topbar-h);
  margin: 0 !important;
  background: var(--black);
  color: #ccc;
  font-size: 0.78rem;
  font-weight: 500;
  box-sizing: border-box;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.topbar-left { display: flex; align-items: center; gap: 6px; }
.topbar-rate { color: var(--green-light); font-weight: 700; }
.topbar-right { display: flex; align-items: center; gap: 20px; }

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #ccc;
  text-decoration: none;
  transition: color 0.15s ease;
}

.topbar-link:hover { color: var(--green-light); }
.topbar-link:focus-visible { outline: 2px solid var(--green-light); outline-offset: 2px; border-radius: 2px; }
.topbar-link svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ================================================================
   HEADER
   ================================================================ */
#siteHeader {
  position: fixed !important;
  top: var(--topbar-h) !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  max-width: none !important;
  z-index: 10000 !important;
  height: var(--header-h);
  margin: 0 !important;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  border-top: none;
  transition: box-shadow var(--ease), border-color var(--ease);
  display: flex !important;
  box-sizing: border-box;
  padding: 0;
  float: none !important;
}

#siteHeader.scrolled {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  transition: opacity var(--ease);
}

.logo:hover { opacity: 0.85; }
.logo:focus-visible { outline: 3px solid var(--green-dark); outline-offset: 4px; border-radius: 4px; }
.logo img { height: 60px; width: auto; }

/* Nav */
.primary-nav {
  display: flex;
  align-items: center;
  height: 100%;
}

.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 clamp(8px, 1vw, 14px);
  height: 100%;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  text-decoration: none;
  transition: color var(--ease);
  white-space: nowrap;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 0; height: 2.5px;
  background: var(--green-dark);
  transition: width 0.25s ease;
  border-radius: 2px;
}

.nav-link:hover,
.nav-item.active > .nav-link { color: var(--green-darker); }

.nav-link:hover::after,
.nav-item.active > .nav-link::after { width: calc(100% - 16px); }

.nav-link:focus-visible { outline: 2px solid var(--green-dark); outline-offset: -2px; border-radius: 4px; }

.nav-chevron { width: 10px; height: 10px; transition: transform 0.25s ease; flex-shrink: 0; }
.nav-item.active .nav-chevron { transform: rotate(180deg); }

/* Header CTA */
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.8125rem;
  line-height: 1;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--r-md);
  transition: all var(--ease);
  cursor: pointer;
  white-space: nowrap;
}

.btn:focus-visible { outline: 3px solid var(--green-dark); outline-offset: 2px; }

.btn-green {
  padding: 10px 22px;
  background: var(--green-dark);
  color: var(--white);
  border-color: var(--green-dark);
}

.btn-green:hover {
  background: var(--green-darker);
  border-color: var(--green-darker);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--green-glow);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--r-sm);
  transition: background var(--ease);
  border: none;
  background: none;
  cursor: pointer;
}

.mobile-toggle:hover { background: var(--green-tint); }
.mobile-toggle:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 2px; }

.mobile-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.mobile-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ================================================================
   MEGA MENU
   ================================================================ */
.mega-menu {
  position: fixed !important;
  top: 71px !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  max-width: none !important;
  z-index: 9999 !important;
  margin: 0 !important;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-mega);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  max-height: calc(100vh - var(--total-h));
  overflow-y: auto;
  overscroll-behavior: contain;
  box-sizing: border-box;
}

.nav-item.active .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px var(--gutter) 24px;
}

#megaBackdrop {
  position: fixed !important;
  top: var(--total-h) !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100% !important;
  max-width: none !important;
  z-index: 9998 !important;
  margin: 0 !important;
  background: rgba(0,0,0,0.15);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  pointer-events: none;
}

#megaBackdrop.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mega-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--green-dark);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--green-tint);
}

.mega-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  margin: 0 -10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dark);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: all 0.15s ease;
  line-height: 1.35;
}

.mega-link:hover { background: var(--green-tint); color: var(--green-darker); }
.mega-link:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 0; }

.mega-link .arr {
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.15s ease;
  color: var(--green-dark);
  font-size: 0.7rem;
  flex-shrink: 0;
}

.mega-link:hover .arr { opacity: 1; transform: translateX(0); }

.mega-slink {
  display: block;
  padding: 5px 10px;
  margin: 0 -10px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-mid);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: all 0.15s ease;
}

.mega-slink:hover { background: var(--green-tint); color: var(--green-darker); padding-left: 14px; }
.mega-slink:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 0; }

.mega-cta-bar {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.mega-cta-link {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--green-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: gap var(--ease), color var(--ease);
}

.mega-cta-link:hover { gap: 10px; color: var(--green-darker); }
.mega-cta-link:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 4px; border-radius: 2px; }

/* Grids */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px 24px; }
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px 24px; }
.ind-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.tech-badge-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }

.tech-badge {
  display: inline-block;
  padding: 4px 10px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-mid);
  text-decoration: none;
  transition: all 0.15s ease;
}

.tech-badge:hover { background: var(--green-tint); border-color: var(--green-dark); color: var(--green-darker); }
.tech-badge:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 1px; }

.ind-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  text-decoration: none;
  transition: all 0.2s ease;
}

.ind-card:hover { border-color: var(--green-dark); background: var(--green-tint); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.ind-card:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 2px; }
.ind-card .ind-name { font-family: var(--font-heading); font-size: 0.85rem; font-weight: 700; color: var(--text-dark); margin-bottom: 2px; }
.ind-card .ind-desc { font-size: 0.72rem; color: var(--text-muted); line-height: 1.4; }
.ind-card:hover .ind-name { color: var(--green-darker); }

/* ================================================================
   MOBILE NAV
   ================================================================ */
#mobileNav {
  position: fixed !important;
  top: var(--total-h) !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100% !important;
  max-width: none !important;
  z-index: 9999 !important;
  margin: 0 !important;
  background: var(--bg);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}

#mobileNav.open { transform: translateX(0); }

.mob-inner { padding: 8px 20px 40px; }
.mob-item { border-bottom: 1px solid var(--border); }

.mob-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 15px 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-dark);
  text-decoration: none;
  text-align: left;
  border: none;
  background: none;
  cursor: pointer;
}

.mob-link:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 2px; border-radius: 4px; }
.mob-link .mob-chev { width: 14px; height: 14px; color: var(--green-dark); transition: transform 0.3s ease; }
.mob-item.open > .mob-link .mob-chev { transform: rotate(180deg); }
.mob-item.open > .mob-link { color: var(--green-darker); }

.mob-sub { max-height: 0; overflow: hidden; transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.mob-item.open > .mob-sub { max-height: 3000px; }
.mob-sub-inner { padding: 0 0 16px 4px; }

.mob-sub-label {
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green-dark);
  padding: 12px 0 4px;
}

.mob-sub-link {
  display: block;
  padding: 9px 12px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-dark);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: all 0.15s ease;
}

.mob-sub-link:hover,
.mob-sub-link:focus-visible { background: var(--green-tint); color: var(--green-darker); }
.mob-sub-link:focus-visible { outline: 2px solid var(--green-dark); outline-offset: 0; }

.mob-viewall {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--green-dark);
  text-decoration: none;
  margin-top: 4px;
}

.mob-pills { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 0 6px 12px; }
.mob-cta { padding: 20px 0 8px; }
.mob-cta .btn { width: 100%; padding: 16px 24px; font-size: 0.9375rem; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1100px) {
  .services-grid, .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .ind-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  :root {
    --header-h: 64px;
    --topbar-h: 36px;
    --total-h: calc(var(--topbar-h) + var(--header-h));
  }
  .primary-nav { display: none; }
  .header-actions .btn { display: none; }
  .mobile-toggle { display: flex; }
  .mega-menu, #megaBackdrop { display: none !important; }
}

@media (max-width: 600px) {
  :root {
    --header-h: 60px;
    --topbar-h: 32px;
    --total-h: calc(var(--topbar-h) + var(--header-h));
  }
  .logo img { height: 40px; }
  .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .topbar-left { font-size: 0.7rem; }
  .topbar-right { gap: 14px; font-size: 0.7rem; }
  .topbar-email-text { display: none; }
}