/* ==========================================================================
   AIVANTAGED - DESIGN SYSTEM & CORE STYLESHEET
   Light Mode – Clean, High-Contrast B2B Aesthetic
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400;1,600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Brand Colors */
  --color-primary: #121926;
  --color-obsidian: #0B0E14;
  --color-accent: #C4F82A;
  --color-accent-hover: #b0e015;
  --color-accent-text: #2d5a00;       /* Dark green – readable on white */
  --color-accent-light: rgba(196, 248, 42, 0.14);

  /* Neutral Palette */
  --color-white: #FFFFFF;
  --color-offwhite: #F8F9FA;
  --color-surface: #F1F5F9;
  --color-slate-100: #F1F5F9;
  --color-slate-200: #E2E8F0;
  --color-slate-300: #CBD5E1;
  --color-slate-400: #94A3B8;
  --color-slate-500: #64748B;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1E293B;
  --color-slate-900: #0F172A;

  /* Dark Surfaces (for nav, footer, terminal cards, CTA banners) */
  --dark-bg: #0B0E14;
  --dark-surface-1: #121926;
  --dark-surface-2: #182234;
  --dark-border: rgba(255, 255, 255, 0.09);

  /* Typography */
  --font-sans: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --container-max: 1240px;
  --container-narrow: 900px;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
  --shadow-glow: 0 0 24px rgba(196, 248, 42, 0.22);
}

/* ==========================================================================
   CSS RESET & BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-white);
  color: var(--color-primary);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button, input, select, textarea {
  font: inherit;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-obsidian);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.65rem); font-weight: 700; }
h4 { font-size: 1.15rem; font-weight: 700; }

p {
  color: var(--color-slate-600);
  font-size: 1.05rem;
  line-height: 1.72;
}

.text-lead {
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  line-height: 1.65;
  color: var(--color-slate-700);
}

.text-white { color: var(--color-white) !important; }
.text-muted  { color: var(--color-slate-600) !important; }
.section-dark .text-muted,
.site-footer .text-muted { color: var(--color-slate-300) !important; }

/* Mono Tags */
.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  padding: 4px 11px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Accent tag: lime bg + dark green text – WCAG AA compliant */
.mono-tag-accent {
  background: var(--color-accent);
  color: var(--color-accent-text);
  border: 1px solid rgba(0,0,0,0.07);
}

/* Dark tag: used on dark surfaces */
.mono-tag-dark {
  background: rgba(255,255,255,0.10);
  color: var(--color-accent);
  border: 1px solid rgba(196, 248, 42, 0.28);
}

/* On light surfaces, dark tag variant */
.mono-tag-outline {
  background: transparent;
  color: var(--color-slate-700);
  border: 1px solid var(--color-slate-300);
}

/* Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: 92px 0;
  position: relative;
}

/* Section backgrounds */
.section-light  { background: var(--color-white); }
.section-subtle { background: var(--color-offwhite); }

.section-dark,
.section-navy {
  background: var(--dark-bg);
  color: var(--color-white);
}

.section-dark h1, .section-dark h2,
.section-dark h3, .section-dark h4,
.section-navy h1, .section-navy h2,
.section-navy h3, .section-navy h4 {
  color: var(--color-white);
}

.section-dark p,
.section-navy p {
  color: var(--color-slate-300);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1.5px solid transparent;
  white-space: nowrap;
  text-decoration: none;
  min-height: 46px;
}

/* Primary – lime bg, dark text */
.btn-primary {
  background: var(--color-accent);
  color: var(--color-obsidian);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(196, 248, 42, 0.35);
  color: var(--color-obsidian);
}

/* Secondary – transparent, white text (for dark surfaces) */
.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.25);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
  color: var(--color-white);
}

/* Outline – for light surfaces */
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-slate-300);
}

.btn-outline:hover {
  background: var(--color-slate-100);
  border-color: var(--color-slate-400);
  transform: translateY(-2px);
  color: var(--color-primary);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-dark:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  color: var(--color-white);
}

/* Dark fill */
.btn-dark {
  background: var(--color-obsidian);
  color: var(--color-white);
  border-color: var(--color-obsidian);
}

.btn-dark:hover {
  background: var(--dark-surface-1);
  transform: translateY(-2px);
  color: var(--color-accent);
  border-color: var(--dark-surface-1);
}

/* Sizes */
.btn-sm { padding: 9px 18px; font-size: 0.875rem; min-height: 38px; }
.btn-lg { padding: 16px 34px; font-size: 1.05rem; min-height: 54px; }

.btn-arrow svg {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}
.btn-arrow:hover svg { transform: translateX(4px); }

/* ==========================================================================
   NAVIGATION & HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 14, 20, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--dark-border);
  transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  background: rgba(11, 14, 20, 0.99);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.brand-logo-text {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: -0.04em;
}

.brand-logo-text span { color: var(--color-accent); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  height: 100%;
}

.nav-link {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
  border-radius: var(--radius-full);
}

.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* Mega Menu */
.nav-item-dropdown {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}

.nav-item-dropdown > .nav-link {
  height: 100%;
  display: inline-flex;
  align-items: center;
}

.mega-menu {
  position: absolute;
  top: 100%;
  left: -200px;
  width: 760px;
  max-width: calc(100vw - 32px);
  background: var(--dark-surface-1);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(0,0,0,0.55);
  padding: 26px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.2s;
  z-index: 1001;
  pointer-events: none;
}

/* Invisible hover bridge to eliminate any gap between nav trigger and dropdown */
.mega-menu::before {
  content: '';
  position: absolute;
  top: -24px;
  left: 0;
  right: 0;
  height: 24px;
  background: transparent;
  pointer-events: auto;
}

.nav-item-dropdown:hover .mega-menu,
.nav-item-dropdown.is-open .mega-menu,
.nav-item-dropdown:focus-within .mega-menu,
.mega-menu:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.mega-cluster {
  background: var(--dark-surface-2);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.mega-cluster-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-accent);
  letter-spacing: 0.09em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mega-service-link {
  display: flex;
  flex-direction: column;
  padding: 7px 8px;
  border-radius: var(--radius-xs);
  transition: background var(--transition-fast), transform var(--transition-fast);
  margin-bottom: 3px;
}

.mega-service-link:hover {
  background: rgba(196, 248, 42, 0.09);
  transform: translateX(3px);
}

.mega-service-name {
  color: var(--color-white);
  font-size: 0.88rem;
  font-weight: 700;
}

.mega-service-desc {
  color: rgba(255,255,255,0.72);
  font-size: 0.76rem;
  line-height: 1.3;
  margin-top: 2px;
}

.mega-footer {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.mobile-toggle:hover { background: rgba(255,255,255,0.08); }

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 380px;
  height: 100dvh;
  background: var(--dark-bg);
  z-index: 2000;
  padding: 28px 22px;
  overflow-y: auto;
  transition: right var(--transition-slow);
  box-shadow: -12px 0 40px rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-drawer.active { right: 0; }

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.drawer-backdrop.active { opacity: 1; visibility: visible; }

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--dark-border);
}

.drawer-close {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--dark-border);
  color: rgba(255,255,255,0.7);
  font-size: 1.2rem;
  cursor: pointer;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 28px;
  flex: 1;
}

.drawer-link {
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  font-weight: 700;
  display: block;
  padding: 11px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color var(--transition-fast);
}

.drawer-link:hover { color: var(--color-accent); }

.drawer-accordion-btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  padding: 11px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.drawer-accordion-btn svg {
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.drawer-sublinks {
  list-style: none;
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px 0 6px 14px;
  border-left: 2px solid var(--color-accent);
  margin-top: 8px;
  margin-bottom: 8px;
}

.drawer-sublinks.open { display: flex; }

.drawer-sublinks a {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  padding: 5px 0;
  display: block;
  transition: color var(--transition-fast);
}

.drawer-sublinks a:hover { color: var(--color-accent); }

/* ==========================================================================
   HERO SECTION (Light Mode)
   ========================================================================== */
.hero {
  position: relative;
  padding: 100px 0 80px;
  background: var(--color-white);
  overflow: hidden;
  border-bottom: 1px solid var(--color-slate-200);
}

/* Subtle lime glow blob top-right */
.hero::before {
  content: '';
  position: absolute;
  width: 560px;
  height: 560px;
  top: -120px;
  right: -100px;
  background: radial-gradient(circle, rgba(196, 248, 42, 0.16) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content { position: relative; z-index: 2; }

.hero-badge-wrap { margin-bottom: 18px; }

.hero-title {
  color: var(--color-obsidian);
  margin-bottom: 22px;
  line-height: 1.1;
}

.hero-title .highlight {
  color: var(--color-accent-text);
  position: relative;
  display: inline-block;
}

.hero-description {
  color: var(--color-slate-600);
  font-size: 1.15rem;
  line-height: 1.68;
  margin-bottom: 34px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

/* Hero stat bar */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--color-slate-200);
}

.hero-stat-num {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--color-obsidian);
  letter-spacing: -0.03em;
}

.hero-stat-num span { color: var(--color-accent-text); }

.hero-stat-label {
  font-size: 0.78rem;
  color: var(--color-slate-600);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
  margin-top: 4px;
}

/* Hero visual */
.hero-visual { position: relative; z-index: 2; }

/* ==========================================================================
   TERMINAL / CODE CARD (dark, always)
   ========================================================================== */
.terminal-card {
  background: var(--dark-surface-1);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  overflow: hidden;
}

.terminal-header {
  background: #080A0E;
  padding: 13px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--dark-border);
}

.terminal-dots { display: flex; gap: 6px; }

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red    { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green  { background: #27C93F; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: rgba(255,255,255,0.72);
}

.terminal-body {
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.terminal-line {
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.terminal-prompt { color: var(--color-accent); font-weight: 700; }
.terminal-text   { color: rgba(255,255,255,0.88); }

.terminal-badge-live {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 7px var(--color-accent);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%  { transform: scale(0.95); opacity: 0.75; }
  50% { transform: scale(1.2);  opacity: 1; }
  100%{ transform: scale(0.95); opacity: 0.75; }
}

.flow-step-box {
  background: var(--dark-surface-2);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  margin: 7px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.flow-step-name {
  font-weight: 700;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
}

.flow-step-status {
  font-size: 0.72rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* ==========================================================================
   PROOF BAR (light mode)
   ========================================================================== */
.proof-bar {
  background: var(--color-offwhite);
  padding: 32px 0;
  border-bottom: 1px solid var(--color-slate-200);
}

.proof-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.proof-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-slate-600);
}

.proof-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.proof-logo-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-slate-700);
  padding: 7px 15px;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: all var(--transition-fast);
}

.proof-logo-item:hover {
  color: var(--color-primary);
  border-color: var(--color-slate-300);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   5-STEP ENGINE (light mode)
   ========================================================================== */
.engine-section {
  background: var(--color-offwhite);
  padding: 96px 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-header-left {
  text-align: left;
  margin: 0 0 36px;
}

.section-subtitle {
  color: var(--color-slate-600);
  font-size: 1.1rem;
  margin-top: 14px;
  line-height: 1.68;
}

/* Engine tab row */
.engine-nav {
  display: flex;
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 5px;
  margin-bottom: 36px;
  overflow-x: auto;
  gap: 4px;
  -webkit-overflow-scrolling: touch;
}

.engine-tab {
  flex: 1;
  min-width: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 13px 16px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-slate-600);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.engine-tab:hover {
  color: var(--color-primary);
  background: var(--color-slate-100);
}

.engine-tab.active {
  background: var(--color-accent);
  color: var(--color-obsidian);
  border-color: var(--color-accent);
  box-shadow: 0 3px 12px rgba(196, 248, 42, 0.3);
}

.engine-tab-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.85;
}

.engine-tab.active .engine-tab-num { opacity: 1; }

/* Engine panels */
.engine-panel { display: none; animation: fadeIn 0.3s ease forwards; }

.engine-panel.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.engine-details {
  background: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.engine-details-tag { margin-bottom: 12px; }

.engine-details h3 {
  color: var(--color-obsidian);
  font-size: 1.65rem;
  margin-bottom: 12px;
}

.engine-details p { color: var(--color-slate-600); }

.engine-deliverables {
  list-style: none;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.engine-deliverables li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  color: var(--color-slate-700);
  font-size: 0.95rem;
}

.engine-deliverables li svg {
  color: var(--color-accent-text);
  flex-shrink: 0;
  margin-top: 3px;
}

.engine-diagram {
  background: var(--dark-surface-1);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.diagram-node {
  background: var(--dark-surface-2);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.diagram-node.active-node {
  border-color: rgba(196, 248, 42, 0.5);
  box-shadow: 0 0 14px rgba(196, 248, 42, 0.12);
}

.diagram-arrow {
  display: flex;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.1rem;
}

/* ==========================================================================
   SERVICE CARDS GRID
   ========================================================================== */
.services-grid-section {
  padding: 92px 0;
  background: var(--color-white);
}

.service-filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 44px;
}

.filter-btn {
  padding: 8px 18px;
  background: var(--color-white);
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-full);
  color: var(--color-slate-600);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 38px;
}

.filter-btn:hover {
  border-color: var(--color-slate-400);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  transition: background var(--transition-fast);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-slate-300);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before { background: var(--color-accent); }

.card-icon-wrap {
  width: 48px;
  height: 48px;
  background: var(--color-slate-100);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 18px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.service-card:hover .card-icon-wrap {
  background: var(--color-accent);
  color: var(--color-obsidian);
}

.card-category {
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-slate-600);
  letter-spacing: 0.07em;
  margin-bottom: 7px;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--color-obsidian);
}

.card-desc {
  font-size: 0.93rem;
  color: var(--color-slate-600);
  margin-bottom: 20px;
  flex-grow: 1;
  line-height: 1.65;
}

.card-features {
  list-style: none;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding-top: 14px;
  border-top: 1px solid var(--color-slate-100);
}

.card-features li {
  font-size: 0.84rem;
  color: var(--color-slate-700);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-dark .card-features li,
[style*="background: var(--color-obsidian)"] .card-features li,
[style*="background:var(--color-obsidian)"] .card-features li {
  color: rgba(255, 255, 255, 0.9);
}

.card-features li svg { color: #16a34a; flex-shrink: 0; }

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: auto;
  transition: color var(--transition-fast);
}

.card-link:hover { color: var(--color-accent-text); }

/* ==========================================================================
   FEATURED BUILD / CASE STUDY HIGHLIGHT
   ========================================================================== */
.case-study-feature {
  padding: 92px 0;
  background: var(--color-offwhite);
}

.case-feature-box {
  background: var(--dark-surface-1);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 52px;
  border: 1px solid var(--dark-border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}

.case-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.case-metric-card {
  background: var(--dark-surface-2);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 22px;
}

.case-metric-val {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-accent);
  margin-bottom: 5px;
}

.case-metric-desc {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.45;
}

/* ==========================================================================
   ARCHITECTURE DIAGRAMS
   ========================================================================== */
.arch-diagram {
  background: var(--dark-surface-1);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 32px 0;
}

.arch-flow {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.arch-layer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--dark-surface-2);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  flex-wrap: wrap;
}

.arch-layer-title {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.arch-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.arch-pill {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xs);
  padding: 4px 10px;
  font-size: 0.76rem;
  color: rgba(255,255,255,0.8);
}

/* ==========================================================================
   FORMS & INTAKE
   ========================================================================== */
.form-card {
  background: var(--color-white);
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-group-full { grid-column: 1 / -1; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-slate-700);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 15px;
  background: var(--color-offwhite);
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

::placeholder {
  color: var(--color-slate-500);
  opacity: 1;
}

.section-dark ::placeholder,
input[style*="background: var(--dark-surface-2)"]::placeholder,
input[style*="background:var(--dark-surface-2)"]::placeholder {
  color: rgba(255, 255, 255, 0.7);
  opacity: 1;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(18, 25, 38, 0.09);
}

.form-textarea { resize: vertical; min-height: 110px; }

.form-alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 18px;
  display: none;
}

.form-alert-success {
  background: rgba(22, 163, 74, 0.1);
  border: 1.5px solid #16a34a;
  color: #14532d;
}

.form-alert-error {
  background: rgba(220, 38, 38, 0.08);
  border: 1.5px solid #dc2626;
  color: #7f1d1d;
}

/* ==========================================================================
   ACCORDION / FAQ
   ========================================================================== */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion-item {
  background: var(--color-white);
  border: 1.5px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  text-align: left;
  gap: 12px;
  min-height: 64px;
}

.accordion-icon {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-normal);
  color: var(--color-slate-400);
  flex-shrink: 0;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  color: var(--color-accent-text);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-body {
  padding: 0 24px 22px;
  color: var(--color-slate-600);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* ==========================================================================
   COMPARISON TABLE
   ========================================================================== */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.comparison-table th {
  padding: 14px 16px;
  border-bottom: 2px solid var(--color-slate-200);
  text-align: left;
  font-weight: 700;
  color: var(--color-slate-600);
}

.comparison-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-slate-200);
  color: var(--color-slate-600);
  vertical-align: top;
}

.comparison-table tr:last-child td { border-bottom: none; }

.comparison-table .col-header { color: var(--color-obsidian); font-weight: 700; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #080A0E;
  color: rgba(255,255,255,0.75);
  padding: 80px 0 32px;
  border-top: 1px solid var(--dark-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 44px;
  margin-bottom: 56px;
}

.footer-col-title {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: rgba(255,255,255,0.75);
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.footer-link:hover { color: var(--color-accent); }

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.83rem;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-legal {
  display: flex;
  gap: 22px;
}

/* ==========================================================================
   UTILITY HELPERS
   ========================================================================== */
.text-center { text-align: center; }

.check-icon { color: #16a34a; flex-shrink: 0; }
.cross-icon { color: #dc2626; }

/* ==========================================================================
   RESPONSIVE DESIGN & MOBILE LAYOUT SYSTEM
   ========================================================================== */

/* Split Layout Utilities (used across pages) */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.split-grid-unequal-left {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: flex-start;
}

.split-grid-unequal-right {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
}

.service-card-split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
}

/* ---------- Tablet (≤ 1100px) ---------- */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual { order: -1; }

  .split-grid,
  .split-grid-unequal-left,
  .split-grid-unequal-right,
  .service-card-split {
    grid-template-columns: 1fr !important;
    gap: 32px;
  }

  .case-feature-box {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 40px 36px;
  }

  .engine-panel.active {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }

  .mega-menu {
    left: -80px;
    width: 600px;
  }
}

/* ---------- Mobile (≤ 768px) ---------- */
@media (max-width: 768px) {
  /* ---- Nav ---- */
  .nav-menu { display: none !important; }

  /* Hide text CTA buttons in nav-actions, but keep the mobile toggle visible */
  .nav-actions .btn-secondary,
  .nav-actions .btn-primary { display: none !important; }

  .mobile-toggle { display: inline-flex !important; }

  /* ---- Typography ---- */
  h1 { font-size: clamp(1.85rem, 7vw, 2.6rem); }
  h2 { font-size: clamp(1.5rem, 5vw, 2rem); }
  h3 { font-size: clamp(1.2rem, 4vw, 1.5rem); }

  /* ---- Layout ---- */
  .section { padding: 56px 0; }

  /* ---- Split Grids Stacking ---- */
  .split-grid,
  .split-grid-unequal-left,
  .split-grid-unequal-right,
  .service-card-split {
    grid-template-columns: 1fr !important;
    gap: 28px !important;
  }

  /* ---- Hero ---- */
  .hero { padding: 60px 0 44px; }
  .hero::before { width: 260px; height: 260px; right: -50px; top: -50px; }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-visual { order: -1; }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .hero-stat-num { font-size: 1.5rem; }

  .hero-actions {
    flex-wrap: wrap;
    gap: 12px;
  }

  /* ---- Engine ---- */
  .engine-section { padding: 56px 0; }

  .engine-nav {
    gap: 3px;
    padding: 4px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .engine-nav::-webkit-scrollbar { display: none; }

  .engine-tab {
    min-width: 100px;
    padding: 10px 12px;
    font-size: 0.82rem;
    flex-shrink: 0;
  }

  .engine-panel.active {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .engine-details { padding: 22px 18px; }

  /* ---- Service Cards ---- */
  .cards-grid {
    grid-template-columns: 1fr !important;
  }

  /* ---- Case Study Feature ---- */
  .case-feature-box {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 28px 20px;
    border-radius: var(--radius-lg);
  }

  .case-metrics-grid { grid-template-columns: repeat(2, 1fr); }

  /* ---- Forms & Inputs ---- */
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 24px 18px; }
  
  .form-input,
  .form-textarea,
  .form-select {
    font-size: 16px !important; /* Prevents auto-zoom on iOS mobile */
  }

  /* ---- Comparison Table ---- */
  .comparison-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-sm);
  }

  .comparison-table,
  table {
    min-width: 540px;
  }

  /* ---- Architecture diagrams ---- */
  .arch-layer {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  /* ---- Footer ---- */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 14px;
  }

  .footer-legal { flex-wrap: wrap; justify-content: center; gap: 16px; }

  /* ---- Mega-menu guard on mobile ---- */
  .mega-menu { display: none !important; }

  /* ---- Accordion touch targets ---- */
  .accordion-header { min-height: 58px; padding: 16px 18px; }
}

/* ---------- Small mobile (≤ 480px) ---------- */
@media (max-width: 480px) {
  .container { padding-inline: 16px; }

  /* ---- Hero ---- */
  .hero-stats { grid-template-columns: 1fr; gap: 10px; }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn { justify-content: center; width: 100%; }

  /* ---- Stats ---- */
  .case-metrics-grid { grid-template-columns: 1fr; }

  /* ---- Filters ---- */
  .filter-btn { font-size: 0.82rem; padding: 7px 14px; }

  /* ---- Proof bar ---- */
  .proof-logos { gap: 8px; }

  /* ---- Mobile drawer at full width on tiny screens ---- */
  .mobile-drawer { width: 100%; max-width: 100%; }

  /* ---- Buttons ---- */
  .btn { font-size: 0.9rem; padding: 12px 20px; }
  .btn-sm { padding: 9px 16px; font-size: 0.84rem; }

  /* ---- Section padding ---- */
  .section { padding: 44px 0; }

  /* ---- Terminal card overflow ---- */
  .terminal-body { padding: 16px; font-size: 0.78rem; overflow-x: auto; }
  .terminal-line { gap: 8px; }
}