/* ================================================================
   AIStream Consultants LLP – Website Stylesheet
   Design: Corporate Blue — clean, professional, conversion-focused
   ================================================================ */

/* ── CSS Custom Properties ── */
:root {
  --blue-950: #060F2B;
  --blue-900: #0A1A4A;
  --blue-800: #0A2E6E;
  --blue-700: #1243A0;
  --blue-600: #1557C0;
  --blue-500: #2563EB;
  --blue-400: #3B82F6;
  --blue-300: #60A5FA;
  --blue-200: #93C5FD;
  --blue-100: #DBEAFE;
  --blue-50:  #EFF6FF;
  --white:    #FFFFFF;
  --gray-50:  #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-400: #94A3B8;
  --gray-600: #475569;
  --gray-800: #1E293B;
  --accent:   #EF4444;
  --gold:     #F59E0B;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm:  0 1px 3px rgba(10,46,110,.08), 0 1px 2px rgba(10,46,110,.06);
  --shadow-md:  0 4px 16px rgba(10,46,110,.12), 0 2px 6px rgba(10,46,110,.08);
  --shadow-lg:  0 10px 40px rgba(10,46,110,.16), 0 4px 12px rgba(10,46,110,.10);
  --shadow-xl:  0 20px 60px rgba(10,46,110,.22);

  --transition: 0.22s cubic-bezier(.4,0,.2,1);
  --nav-h: 52px;
  --topbar-h: 58px;
  --header-h: calc(var(--topbar-h) + var(--nav-h));
}

/* ── Bootstrap Integration ── */
/* Preserve custom fonts and ensure Bootstrap utility classes work smoothly */
body {
  font-family: var(--font-body) !important;
  color: var(--gray-800);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
}

/* Bootstrap form control customization */
.form-control, .form-select {
  border: 1px solid rgba(10, 26, 74, 0.15);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  transition: all var(--transition);
}

.form-control:focus, .form-select:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Bootstrap button customization */
.btn {
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.btn-primary {
  background-color: var(--blue-600);
  border-color: var(--blue-600);
}

.btn-primary:hover {
  background-color: var(--blue-700);
  border-color: var(--blue-700);
}

/* Bootstrap grid customization for custom layouts */
@media (max-width: 991.98px) {
  .d-lg-block {
    display: none !important;
  }
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
select, input, textarea { font-family: inherit; }

/* ── Skip link (accessibility) ── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  padding: 8px 16px;
  background: var(--blue-800);
  color: var(--white);
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 9999;
  transition: top var(--transition);
}
.skip-link:focus { top: 0; }

/* ================================================================
   TOP BAR
   ================================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 200;
  background: #FFFFFF;
  border-bottom: 1px solid rgba(10, 26, 74, 0.08);
  box-shadow: 0 2px 8px rgba(10, 26, 74, 0.06);
  height: var(--topbar-h);
}

.topbar-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  transition: opacity var(--transition);
}
.logo:hover { opacity: 0.88; }

.logo-mark {
  flex-shrink: 0;
  filter: drop-shadow(0 1px 3px rgba(0,0,0,.1));
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-mark img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 2px;
}
.logo-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #3e5d91;
  /* letter-spacing: 0.14em; */
  white-space: nowrap;
}
.logo-sub {
  font-size: 1.25rem;
  font-weight: 700;
  color: #3e5d91;
  /* letter-spacing: 0.14em; */
  white-space: nowrap;
}

/* Contact strip */
.topbar-contacts {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.contact-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #475569;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(10, 26, 74, 0.1);
  transition: all var(--transition);
  white-space: nowrap;
}
.contact-chip:hover {
  color: #0A1A4A;
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(21, 87, 192, 0.2);
}

.cta-btn-sm {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  background: var(--blue-500);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition);
  border: 1px solid var(--blue-400);
}
.cta-btn-sm:hover {
  background: var(--blue-400);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37,99,235,.4);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover { background: rgba(255,255,255,.1); }
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ================================================================
   NAVIGATION
   ================================================================ */
.main-nav {
  position: sticky;
  top: var(--topbar-h);
  z-index: 190;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 50%, #E8F2FF 100%);
  border-bottom: 1px solid rgba(21, 87, 192, 0.15);
  box-shadow: 0 2px 8px rgba(10, 26, 74, 0.04);
  height: var(--nav-h);
}

.nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
}

.nav-list {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #0A1A4A;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--blue-500);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}
.nav-link:hover, .nav-link.active {
  color: var(--blue-700);
  background: rgba(21, 87, 192, 0.1);
}
.nav-link.active::after, .nav-link:hover::after { transform: scaleX(1); }

.chevron {
  transition: transform var(--transition);
  flex-shrink: 0;
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--white);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.18s cubic-bezier(.4,0,.2,1);
  z-index: 300;
}

.has-dropdown:hover .dropdown,
.has-dropdown.open .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.has-dropdown:hover .chevron,
.has-dropdown.open .chevron {
  transform: rotate(180deg);
}

.dropdown-item {
  display: block;
  padding: 9px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #0A1A4A;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.dropdown-item:hover {
  background: rgba(37, 99, 235, 0.1);
  color: var(--blue-700);
  padding-left: 16px;
}

/* ================================================================
   SHARED SECTION STYLES
   ================================================================ */
.section {
  padding: 88px 0;
}

.section-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--blue-500);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 400;
  color: var(--blue-900);
  line-height: 1.2;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--gray-600);
  max-width: 600px;
  line-height: 1.65;
}

/* Shared buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  background: var(--blue-600);
  color: var(--white);
  font-size: 0.925rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 2px solid var(--blue-600);
  transition: all var(--transition);
  cursor: pointer;
  letter-spacing: 0.01em;
}
.btn-primary:hover {
  background: var(--blue-700);
  border-color: var(--blue-700);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(21,87,192,.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  background: transparent;
  color: var(--white);
  font-size: 0.925rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid rgba(255,255,255,.35);
  transition: all var(--transition);
}
.btn-secondary:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.6);
  transform: translateY(-2px);
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative;
  background: #0A1A4A;
  overflow: hidden;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
}

/* Geometric background */
.hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.hero-geo {
  position: absolute;
  background: linear-gradient(135deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,.01) 100%);
  border: 1px solid rgba(255,255,255,.07);
}
.geo-1 {
  width: 560px; height: 560px;
  top: -140px; right: -80px;
  transform: rotate(22deg);
  border-radius: 40px;
}
.geo-2 {
  width: 320px; height: 320px;
  top: 60px; right: 180px;
  transform: rotate(-15deg);
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(37,99,235,.18) 0%, rgba(37,99,235,.04) 100%);
}
.geo-3 {
  width: 200px; height: 200px;
  bottom: 80px; right: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.2) 0%, transparent 70%);
  border: none;
}
.geo-4 {
  width: 800px; height: 800px;
  bottom: -400px; left: -200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18,67,160,.15) 0%, transparent 60%);
  border: none;
}

.hero-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 2;
}

/* Hero content */
.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  background: rgba(37,99,235,.25);
  color: var(--blue-200);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
  border: 1px solid rgba(96,165,250,.25);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease both;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 20px;
}

.hero-title-line1 {
  display: block;
  animation: fadeInUp 0.6s 0.1s ease both;
  opacity: 0;
}
.hero-title-line2 {
  display: block;
  animation: fadeInUp 0.6s 0.2s ease both;
  opacity: 0;
}
.hero-title-accent {
  display: block;
  color: var(--blue-300);
  font-style: italic;
  animation: fadeInUp 0.6s 0.3s ease both;
  opacity: 0;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: rgba(255,255,255,.72);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 500px;
  animation: fadeInUp 0.6s 0.4s ease both;
  opacity: 0;
}
.hero-subtitle strong { color: var(--blue-300); font-weight: 600; }

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin-bottom: 36px;
  animation: fadeInUp 0.6s 0.5s ease both;
  opacity: 0;
}

.stat-item {
  flex: 1;
  text-align: center;
}
.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--blue-300);
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,.55);
  margin-top: 4px;
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.15);
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s 0.6s ease both;
  opacity: 0;
}

/* Hero visual */
.hero-visual {
  position: relative;
  animation: fadeInRight 0.8s 0.4s ease both, gentle-float 4s ease-in-out infinite;
  opacity: 0;
  animation-delay: 0.4s, 1.2s;
}

.visual-card {
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}

.vc-main {
  padding: 24px;
  min-height: 240px;
}

.vc-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.vc-dots { display: flex; gap: 5px; }
.vc-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.25);
}
.vc-title {
  font-size: 0.78rem;
  color: rgba(255,255,255,.5);
  font-weight: 500;
}

.vc-bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 130px;
}
.vc-bar {
  flex: 1;
  height: var(--h);
  background: linear-gradient(to top, var(--blue-500), var(--blue-300));
  border-radius: 4px 4px 0 0;
  position: relative;
  transition: height 1.4s cubic-bezier(.22,1,.36,1);
  animation: barGrow 1.2s cubic-bezier(.22,1,.36,1) both;
}
.vc-bar span {
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.62rem;
  color: rgba(255,255,255,.4);
  white-space: nowrap;
}

.vc-mini {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
}
.vc-adoption { bottom: -20px; left: -20px; }
.vc-roi      { top: -20px;    right: -10px; }

.vc-mini-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--blue-500);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: var(--white);
  flex-shrink: 0;
}
.vc-mini-label {
  font-size: 0.68rem;
  color: rgba(255,255,255,.5);
  font-weight: 500;
}
.vc-mini-val {
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
}

/* Scroll cue */
.hero-scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}
.scroll-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
}

/* ================================================================
   ACE FRAMEWORK
   ================================================================ */
.ace-section { background: var(--gray-50); }

.ace-tagline {
  font-size: 0.875rem;
  color: var(--blue-600);
  font-weight: 600;
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  margin: 28px 0 48px;
  display: inline-block;
}

.ace-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 0;
}

.ace-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.ace-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-300));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.ace-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-200);
}
.ace-card:hover::before { transform: scaleX(1); }

.ace-letter {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 400;
  color: var(--blue-100);
  line-height: 1;
  position: absolute;
  top: 16px;
  right: 24px;
  user-select: none;
  transition: color var(--transition);
}
.ace-card:hover .ace-letter { color: var(--blue-200); }

.ace-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 12px;
  position: relative;
}

.ace-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
  margin-bottom: 20px;
  position: relative;
}

.ace-bullets {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}
.ace-bullets li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--gray-600);
  font-weight: 500;
}
.ace-bullets li::before {
  content: '→';
  color: var(--blue-400);
  flex-shrink: 0;
  font-weight: 700;
}

/* ================================================================
   4D DELIVERY
   ================================================================ */
.delivery-section { background: var(--white); }

.delivery-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 52px;
  position: relative;
}

.delivery-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(12.5%);
  right: calc(12.5%);
  height: 2px;
  background: linear-gradient(90deg, var(--blue-200), var(--blue-400), var(--blue-200));
  z-index: 0;
}

.dt-phase {
  padding: 0 16px;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.dt-number {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--blue-700);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  box-shadow: 0 4px 14px rgba(18,67,160,.3);
  border: 3px solid var(--white);
  transition: all var(--transition);
}
.dt-phase:hover .dt-number {
  background: var(--blue-500);
  transform: scale(1.12);
  box-shadow: 0 8px 24px rgba(37,99,235,.4);
}

.dt-content {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  min-height: 240px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}
.dt-phase:hover .dt-content {
  background: var(--blue-50);
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
}

.dt-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 6px;
}
.dt-sub {
  font-size: 0.72rem;
  color: var(--blue-400);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.dt-content ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.dt-content li {
  font-size: 0.82rem;
  color: var(--gray-600);
  display: flex;
  gap: 6px;
}
.dt-content li::before {
  content: '·';
  color: var(--blue-400);
  font-weight: 900;
  flex-shrink: 0;
}

.dt-outcome {
  font-size: 0.8rem;
  color: var(--blue-700);
  background: rgba(37,99,235,.08);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  line-height: 1.5;
  border-left: 3px solid var(--blue-400);
  text-align: bottom;
}

/* ================================================================
   ADOPTION GUARANTEE
   ================================================================ */
.adoption-section {
  background: linear-gradient(160deg, var(--blue-900) 0%, var(--blue-800) 100%);
  position: relative;
  overflow: hidden;
}
.adoption-section::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.2) 0%, transparent 65%);
  top: -200px; right: -150px;
  pointer-events: none;
}

.adoption-section .section-label { background: rgba(255,255,255,.08); color: var(--blue-200); border-color: rgba(255,255,255,.15); }
.adoption-section .section-title { color: var(--white); }
.adoption-section .section-subtitle { color: rgba(255,255,255,.65); }

.adoption-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 52px 0 40px;
}

.adoption-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all var(--transition);
}
.adoption-card:hover {
  background: rgba(255,255,255,.11);
  border-color: rgba(255,255,255,.22);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,.2);
}

.adoption-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: rgba(37,99,235,.3);
  border: 1px solid rgba(96,165,250,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.adoption-icon svg {
  width: 24px; height: 24px;
  stroke: var(--blue-200);
}

.adoption-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.adoption-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,.62);
  line-height: 1.68;
}

.adoption-metrics {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.am-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--blue-200);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  flex-shrink: 0;
}
.am-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.am-chip {
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(255,255,255,.7);
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 100px;
  padding: 4px 12px;
}

/* ================================================================
   SUCCESS PACKS
   ================================================================ */
.packs-section { background: var(--gray-50); }

.packs-formula {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 36px 0 52px;
  padding: 18px 28px;
  background: var(--white);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--blue-800);
}
.pf-plus, .pf-equals {
  font-size: 1.2rem;
  color: var(--blue-400);
  font-weight: 700;
}
.pf-result {
  color: var(--blue-600);
  font-weight: 800;
}

.packs-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.pack-card {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.pack-card:hover {
  transform: translateY(-8px);
  border-color: var(--blue-300);
  box-shadow: var(--shadow-lg);
}

.pack-featured {
  border-color: var(--blue-500);
  background: linear-gradient(160deg, #EFF6FF 0%, #DBEAFE 100%);
  transform: scale(1.03);
}
.pack-featured:hover { transform: scale(1.03) translateY(-8px); }

.pack-popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue-600);
  color: var(--white);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 100px;
  white-space: nowrap;
}

.pack-tier {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-500);
}
.pack-hours {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--blue-900);
  line-height: 1;
}
.pack-hours span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-400);
  vertical-align: middle;
}
.pack-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-700);
}
.pack-rate {
  font-size: 0.75rem;
  color: var(--gray-400);
  font-weight: 500;
}
.pack-validity {
  font-size: 0.78rem;
  color: var(--gray-600);
  background: var(--gray-100);
  padding: 3px 10px;
  border-radius: 100px;
}
.pack-note {
  font-size: 0.7rem;
  color: var(--blue-600);
  font-weight: 500;
  text-align: center;
  line-height: 1.4;
}

.pack-btn {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 10px;
  background: var(--blue-600);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.pack-btn:hover {
  background: var(--blue-700);
  transform: translateY(-1px);
}

/* Benefits */
.packs-benefits {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}
.packs-benefits h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 24px;
}
.pb-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.pb-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--gray-600);
}
.pb-icon {
  width: 24px; height: 24px;
  background: var(--blue-100);
  color: var(--blue-600);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ================================================================
   CASE STUDIES
   ================================================================ */
.cases-section { background: var(--white); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 52px;
}

.case-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.case-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-300));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-200);
  background: var(--white);
}
.case-card:hover::after { transform: scaleX(1); }

.case-region {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-500);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 14px;
}

.case-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 10px;
  line-height: 1.35;
}
.case-desc {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
}

.case-module-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 10px;
}

.case-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.case-tag {
  font-size: 0.72rem;
  color: var(--blue-700);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* ================================================================
   CONTACT
   ================================================================ */
.contact-section {
  background: linear-gradient(160deg, var(--blue-50) 0%, var(--white) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 52px;
  margin-top: 52px;
}

.contact-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 28px;
}

.ci-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.9rem;
  color: var(--gray-600);
}
.ci-item svg {
  width: 20px; height: 20px;
  stroke: var(--blue-500);
  flex-shrink: 0;
}
.ci-item a:hover { color: var(--blue-600); }

.ci-social {
  display: flex;
  gap: 10px;
  margin-top: 28px;
}
.social-link {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-600);
  transition: all var(--transition);
}
.social-link svg { width: 18px; height: 18px; }
.social-link:hover {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37,99,235,.3);
}

/* Form */
.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-800);
}
.form-group label span { color: var(--accent); }

.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--gray-800);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-400); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select { cursor: pointer; }

.form-submit { width: 100%; justify-content: center; margin-top: 4px; }

.form-success {
  margin-top: 16px;
  padding: 12px 16px;
  background: #ECFDF5;
  border: 1px solid #6EE7B7;
  border-radius: var(--radius-md);
  color: #065F46;
  font-size: 0.875rem;
  font-weight: 600;
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer {
  background: var(--blue-950);
  color: rgba(255,255,255,.65);
  padding: 60px 0 0;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.65;
  max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-links nav {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-links a,
.footer-contact a {
  font-size: 0.875rem;
  color: rgba(255,255,255,.55);
  transition: color var(--transition);
}
.footer-links a:hover,
.footer-contact a:hover { color: var(--blue-300); }

.footer-contact p {
  font-size: 0.875rem;
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 24px;
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
  color: rgba(255,255,255,.35);
}

/* ================================================================
   KEYFRAMES
   ================================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes barGrow {
  from { height: 0; }
  to   { height: var(--h); }
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* Intersection Observer – reveal on scroll */
@keyframes gentle-float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

/* ── 1080px ── */
@media (max-width: 1080px) {
  .packs-grid { grid-template-columns: repeat(3, 1fr); }
  .pack-featured { transform: none; }
  .pack-featured:hover { transform: translateY(-8px); }
}

/* ── 900px ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 420px; }
  .ace-grid { grid-template-columns: repeat(2, 1fr); }
  .delivery-timeline { grid-template-columns: repeat(2, 1fr); }
  .delivery-timeline::before { display: none; }
  .dt-phase { margin-bottom: 24px; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info { order: 2; }
  .contact-form { order: 1; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ── 768px – tablet/mobile nav ── */
@media (max-width: 768px) {
  .topbar-contacts .contact-chip { display: none; }
  .hamburger { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    right: 0;
    height: auto;
    max-height: 0;
    overflow: hidden;
    border-bottom: none;
    transition: max-height 0.36s cubic-bezier(.4,0,.2,1), box-shadow var(--transition);
  }
  .main-nav.open {
    max-height: 400px;
    box-shadow: 0 8px 24px rgba(0,0,0,.1);
    border-bottom: 2px solid var(--blue-100);
  }

  .nav-inner { height: auto; padding: 8px 16px 12px; }
  .nav-list { flex-direction: column; align-items: flex-start; gap: 0; }
  .nav-link { width: 100%; padding: 11px 12px; border-radius: var(--radius-sm); }
  .nav-link::after { display: none; }

  .dropdown {
    position: static;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none;
    border: none;
    background: var(--blue-50);
    border-radius: var(--radius-sm);
    margin: 4px 0 4px 12px;
    padding: 4px;
    display: none;
  }
  .has-dropdown.open .dropdown { display: block; }

  .hero { min-height: auto; padding: 20px 0; }
  .hero-inner { padding: 48px 20px; }
  .hero-visual { display: none; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 80px; height: 1px; }

  .ace-grid { grid-template-columns: 1fr; }
  .delivery-timeline { grid-template-columns: 1fr; }
  .adoption-grid { grid-template-columns: 1fr; }
  .packs-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .pb-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px 20px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .packs-formula { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ── 480px ── */
@media (max-width: 480px) {
  .section { padding: 60px 0; }
  .topbar-contacts .cta-btn-sm { display: none; }
  .packs-grid { grid-template-columns: 1fr; }
}