/* ==========================================================================
   Apex & Garner — Technology Consulting
   Design system + component styles that sit alongside Tailwind utilities.
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. Design tokens
   Colours are stored as RGB channels so Tailwind can apply alpha values.
   -------------------------------------------------------------------------- */
:root {
  --c-primary: 0 117 184;      /* #0075B8 Brand Blue */
  --c-cyan: 21 219 253;        /* #15DBFD Technology Cyan */
  --c-blue: 1 182 253;         /* #01B6FD Bright Blue */
  --c-green: 55 172 44;        /* #37AC2C Brand Green */
  --c-green-soft: 147 233 149; /* #93E995 Supporting Green */
  --c-navy: 0 27 54;           /* #001B36 Navy */
  --c-navy-800: 0 36 68;       /* #002444 Enterprise Navy */
  --c-navy-deep: 7 27 52;      /* #071B34 Deep Navy */
  --c-surface: 245 249 252;    /* #F5F9FC */
  --c-surface-blue: 237 247 252; /* #EDF7FC */
  --c-border: 216 231 240;     /* #D8E7F0 */
  --c-text: 7 27 52;           /* #071B34 */
  --c-text-muted: 82 103 122;  /* #52677A */

  --color-primary: rgb(var(--c-primary));
  --color-cyan: rgb(var(--c-cyan));
  --color-blue: rgb(var(--c-blue));
  --color-green: rgb(var(--c-green));
  --color-green-soft: rgb(var(--c-green-soft));
  --color-navy: rgb(var(--c-navy));
  --color-navy-deep: rgb(var(--c-navy-deep));
  --color-white: #fff;
  --color-surface: rgb(var(--c-surface));
  --color-border: rgb(var(--c-border));
  --color-text: rgb(var(--c-text));
  --color-text-muted: rgb(var(--c-text-muted));

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --container-width: 1280px;
  --header-h: 80px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --------------------------------------------------------------------------
   02. Base
   -------------------------------------------------------------------------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--color-white);
  color: var(--color-text);
  font-family: Inter, system-ui, sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

html.menu-locked,
html.menu-locked body {
  overflow: hidden;
}

::selection {
  background: rgb(var(--c-cyan) / 0.35);
  color: var(--color-navy);
}

:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Eyebrow label with a small connected-node marker */
.eyebrow {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.75rem;
  max-width: 100%;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.text-gradient {
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan) 55%, var(--color-green-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-gradient-dark {
  background: linear-gradient(90deg, var(--color-primary), var(--color-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --------------------------------------------------------------------------
   03. Background patterns
   -------------------------------------------------------------------------- */
.bg-grid {
  background-image:
    linear-gradient(rgb(var(--c-primary) / 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgb(var(--c-primary) / 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
}

.bg-grid-dark {
  background-image:
    linear-gradient(rgb(var(--c-cyan) / 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgb(var(--c-cyan) / 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}

.glow-cyan {
  background: radial-gradient(closest-side, rgb(var(--c-cyan) / 0.22), transparent);
}

.glow-blue {
  background: radial-gradient(closest-side, rgb(var(--c-primary) / 0.45), transparent);
}

.glow-green {
  background: radial-gradient(closest-side, rgb(var(--c-green) / 0.22), transparent);
}

/* --------------------------------------------------------------------------
   04. Buttons (Button / ArrowButton)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.005em;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
    border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn .btn-arrow {
  width: 1.125rem;
  height: 1.125rem;
  transition: transform 0.3s var(--ease);
}

.btn:hover .btn-arrow,
.btn:focus-visible .btn-arrow {
  transform: translateX(5px);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 24px -12px rgb(var(--c-primary) / 0.8);
}

.btn-primary:hover {
  background: rgb(0 98 156);
  box-shadow: 0 16px 32px -14px rgb(var(--c-primary) / 0.9);
}

.btn-accent {
  background: var(--color-cyan);
  color: var(--color-navy);
}

.btn-accent:hover {
  background: #fff;
}

.btn-ghost-light {
  border: 1px solid rgb(255 255 255 / 0.28);
  color: #fff;
}

.btn-ghost-light:hover {
  border-color: var(--color-cyan);
  background: rgb(var(--c-cyan) / 0.08);
}

.btn-sm {
  min-height: 44px;
  padding: 0.5rem 1.125rem;
  font-size: 0.875rem;
}

/* Inline arrow link */
.arrow-link .arrow-link-icon {
  transition: transform 0.3s var(--ease);
}

.arrow-link:hover .arrow-link-icon,
.arrow-link:focus-visible .arrow-link-icon {
  transform: translateX(5px);
}

/* --------------------------------------------------------------------------
   05. Header
   -------------------------------------------------------------------------- */
.site-header {
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease),
    backdrop-filter 0.4s var(--ease);
}

.header-bar {
  height: var(--header-h);
  transition: height 0.4s var(--ease);
}

.site-header.is-scrolled {
  background: rgb(255 255 255 / 0.9);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 1px 0 rgb(var(--c-border)), 0 10px 30px -18px rgb(var(--c-navy) / 0.35);
}

.site-header.is-scrolled .header-bar {
  height: 66px;
}

/* Logo: supplied mark + live wordmark (matches the brand creatives) */
.logo-name {
  color: #fff;
  transition: color 0.35s var(--ease);
}

.logo-tag {
  color: var(--color-cyan);
  transition: color 0.35s var(--ease);
}

.site-header.is-scrolled .logo-name {
  color: var(--color-text);
}

.site-header.is-scrolled .logo-tag {
  color: var(--color-primary);
}

.logo-mark {
  transition: transform 0.4s var(--ease);
}

.logo:hover .logo-mark {
  transform: translateX(2px) skewX(-4deg);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgb(255 255 255 / 0.82);
  transition: color 0.3s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.875rem;
  right: 0.875rem;
  bottom: 6px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: #fff;
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.site-header.is-scrolled .nav-link {
  color: var(--color-text-muted);
}

.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-link.is-active {
  color: var(--color-text);
}

/* Menu toggle (hamburger → close) */
.menu-toggle {
  color: #fff;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.site-header.is-scrolled .menu-toggle {
  color: var(--color-text);
}

.menu-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.35s var(--ease), opacity 0.2s;
}

.menu-toggle-line + .menu-toggle-line {
  margin-top: 5px;
}

/* Mobile menu open state */
.site-header.menu-open {
  background: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.site-header.menu-open .logo-name {
  color: #fff;
}

.site-header.menu-open .logo-tag {
  color: var(--color-cyan);
}

.site-header.menu-open .menu-toggle {
  color: #fff;
}

.site-header.menu-open .menu-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.menu-open .menu-toggle-line:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .menu-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
}

.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-link {
  transform: translateY(16px);
  opacity: 0;
  transition: transform 0.5s var(--ease), opacity 0.5s var(--ease), color 0.3s;
}

.mobile-menu.is-open .mobile-menu-link {
  transform: none;
  opacity: 1;
}

.mobile-menu.is-open li:nth-child(2) .mobile-menu-link { transition-delay: 0.05s; }
.mobile-menu.is-open li:nth-child(3) .mobile-menu-link { transition-delay: 0.1s; }
.mobile-menu.is-open li:nth-child(4) .mobile-menu-link { transition-delay: 0.15s; }
.mobile-menu.is-open li:nth-child(5) .mobile-menu-link { transition-delay: 0.2s; }

.mobile-menu-link.is-active {
  color: var(--color-cyan);
}

/* --------------------------------------------------------------------------
   06. Hero
   -------------------------------------------------------------------------- */
.hero-overlay {
  background:
    linear-gradient(180deg, rgb(var(--c-navy) / 0.35) 0%, rgb(var(--c-navy) / 0.55) 30%, rgb(var(--c-navy)) 50%);
}

@media (min-width: 1024px) {
  .hero-overlay {
    background:
      linear-gradient(90deg, rgb(var(--c-navy)) 0%, rgb(var(--c-navy) / 0.9) 35%, rgb(var(--c-navy) / 0.45) 60%, rgb(var(--c-navy-800) / 0.5) 100%),
      linear-gradient(0deg, rgb(var(--c-navy)) 0%, transparent 30%);
  }
}

.hero-network .net-line {
  stroke: rgb(var(--c-cyan) / 0.4);
  stroke-width: 1.8;
  fill: none;
}

.hero-network .net-line-flow {
  stroke: var(--color-cyan);
  stroke-width: 3;
  fill: none;
  stroke-dasharray: 0.06 0.94;
  animation: packet 6s linear infinite;
}

.hero-network .net-line-flow.is-green {
  stroke: var(--color-green-soft);
  animation-duration: 8s;
}

.hero-network .net-node {
  fill: var(--color-navy);
  stroke: var(--color-cyan);
  stroke-width: 2.5;
}

.hero-network .net-node.is-green {
  stroke: var(--color-green-soft);
}

.hero-network .net-node.is-hub {
  fill: var(--color-cyan);
  stroke: rgb(var(--c-cyan) / 0.4);
  stroke-width: 6;
}

.hero-network .net-ring {
  fill: none;
  stroke: rgb(var(--c-cyan) / 0.18);
  stroke-width: 1.6;
  stroke-dasharray: 3 10;
}

.hero-network .net-halo {
  fill: rgb(var(--c-cyan) / 0.18);
  transform-box: fill-box;
  transform-origin: center;
  animation: halo 4s var(--ease) infinite;
}

.hero-network .net-halo.is-delayed {
  animation-delay: -2s;
}

.float-card {
  background: rgb(var(--c-navy) / 0.62);
  border: 1px solid rgb(var(--c-cyan) / 0.22);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 40px -24px rgb(0 0 0 / 0.6);
}

.hero-domain {
  border-top: 1px solid rgb(255 255 255 / 0.14);
  transition: border-color 0.3s var(--ease);
}

.hero-domain:hover {
  border-color: var(--color-cyan);
}

/* --------------------------------------------------------------------------
   07. Capability stack + accordion (Healthcare)
   -------------------------------------------------------------------------- */
.cap-card {
  position: relative;
  border: 1px solid var(--color-border);
  background: #fff;
  transition: transform 0.45s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.45s var(--ease), background-color 0.35s var(--ease);
}

.cap-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--color-blue), var(--color-green));
  transform: scaleY(0);
  transition: transform 0.45s var(--ease);
}

.cap-card:hover,
.cap-card.is-open {
  border-color: rgb(var(--c-primary) / 0.35);
  background: linear-gradient(90deg, rgb(var(--c-surface-blue)), #fff 60%);
  box-shadow: 0 18px 40px -24px rgb(var(--c-primary) / 0.45);
}

@media (min-width: 1024px) {
  .cap-card:hover {
    transform: translateX(-6px) scale(1.01);
  }
}

.cap-card:hover::before,
.cap-card.is-open::before {
  transform: scaleY(1);
}

.cap-icon {
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease), transform 0.35s var(--ease);
}

.cap-card:hover .cap-icon,
.cap-card.is-open .cap-icon {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.05);
}

.cap-toggle-icon {
  transition: transform 0.4s var(--ease);
}

.cap-card.is-open .cap-toggle-icon {
  transform: rotate(45deg);
}

.cap-card:hover .cap-explore-arrow {
  transform: translateX(5px);
}

.cap-explore-arrow {
  transition: transform 0.3s var(--ease);
}

.acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--ease);
}

.acc-panel > div {
  overflow: hidden;
}

.is-open > .acc-panel {
  grid-template-rows: 1fr;
}

/* --------------------------------------------------------------------------
   08. Flow / timeline component (Patient Journey + Engineering Lifecycle)
   Vertical by default; horizontal from the breakpoint set on the element.
   -------------------------------------------------------------------------- */
.flow {
  position: relative;
  --dot: 56px;
}

.flow-track {
  position: absolute;
  left: calc(var(--dot) / 2 - 1px);
  top: calc(var(--dot) / 2);
  bottom: calc(var(--dot) / 2);
  width: 2px;
  background: rgb(var(--c-primary) / 0.14);
  overflow: hidden;
}

.flow-progress {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--color-primary), var(--color-cyan) 60%, var(--color-green));
  transform-origin: top;
  transform: scaleY(0);
  transition: transform 0.25s linear;
}

.flow-dot {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: var(--dot);
  height: var(--dot);
  flex: none;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text-muted);
  transition: border-color 0.5s var(--ease), color 0.5s var(--ease),
    box-shadow 0.5s var(--ease), background-color 0.5s var(--ease);
}

.flow-step.is-active .flow-dot {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 0 6px rgb(var(--c-cyan) / 0.16);
}

.flow-step:last-child.is-active .flow-dot {
  border-color: var(--color-green);
  color: var(--color-green);
  box-shadow: 0 0 0 6px rgb(var(--c-green) / 0.16);
}

.flow-label {
  transition: color 0.4s var(--ease);
}

.flow-step.is-active .flow-label {
  color: var(--color-text);
}

.flow-chip {
  border: 1px solid var(--color-border);
  background: #fff;
  transition: border-color 0.4s var(--ease), color 0.4s var(--ease);
}

.flow-step.is-active .flow-chip {
  border-color: rgb(var(--c-primary) / 0.3);
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .flow-md .flow-track {
    left: calc(100% / 12);
    right: calc(100% / 12);
    top: calc(var(--dot) / 2 - 1px);
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .flow-md .flow-progress {
    background: linear-gradient(90deg, var(--color-primary), var(--color-cyan) 60%, var(--color-green));
    transform-origin: left;
    transform: scaleX(0);
  }
}

@media (min-width: 1024px) {
  .flow-lg .flow-track {
    left: calc(100% / 14);
    right: calc(100% / 14);
    top: calc(var(--dot) / 2 - 1px);
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .flow-lg .flow-progress {
    background: linear-gradient(90deg, var(--color-primary), var(--color-cyan) 60%, var(--color-green));
    transform-origin: left;
    transform: scaleX(0);
  }

  /* Lifecycle: supporting capability revealed on hover / focus / when reached */
  .lifecycle-desc {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
  }

  .flow-step:hover .lifecycle-desc,
  .flow-step:focus-visible .lifecycle-desc,
  .flow-step:focus-within .lifecycle-desc {
    opacity: 1;
    transform: none;
  }

  .lifecycle-step:hover .flow-dot,
  .lifecycle-step:focus-visible .flow-dot {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
  }
}

/* Journey dots on the light-blue section */
.journey .flow-dot {
  background: #fff;
}

/* Animated packet along the track */
.flow-track::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(180deg, transparent, rgb(var(--c-cyan) / 0.9), transparent);
  animation: packet-y 5s linear infinite;
}

@media (min-width: 768px) {
  .flow-md .flow-track::after {
    width: 120px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgb(var(--c-cyan) / 0.9), transparent);
    animation: packet-x 5s linear infinite;
  }
}

@media (min-width: 1024px) {
  .flow-lg .flow-track::after {
    width: 120px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgb(var(--c-cyan) / 0.9), transparent);
    animation: packet-x 6s linear infinite;
  }
}

/* --------------------------------------------------------------------------
   09. AI intelligence pipeline
   -------------------------------------------------------------------------- */
/* Rail sits on the marker centre: 1px border + 8px padding + 28px half-marker */
.ai-pipeline {
  position: relative;
  --rail: 36px;
}

.ai-pipeline .flow-track {
  left: var(--rail);
  top: 37px;
  bottom: 37px;
  background: rgb(255 255 255 / 0.1);
}

.ai-pipeline .flow-progress {
  background: linear-gradient(180deg, var(--color-primary), var(--color-blue) 30%, var(--color-cyan) 60%, var(--color-green));
}

.ai-node {
  position: relative;
  transition: opacity 0.4s var(--ease);
}

.ai-node-btn {
  border: 1px solid rgb(255 255 255 / 0.08);
  background: rgb(255 255 255 / 0.02);
  transition: border-color 0.4s var(--ease), background-color 0.4s var(--ease),
    transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.ai-marker {
  --tone: var(--c-blue);
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  flex: none;
  border-radius: 14px;
  border: 1px solid rgb(var(--tone) / 0.35);
  background: rgb(var(--c-navy-deep));
  color: rgb(var(--tone));
  transition: box-shadow 0.4s var(--ease), border-color 0.4s var(--ease), background-color 0.4s var(--ease);
}

.ai-node[data-tone="cyan"] .ai-marker { --tone: var(--c-cyan); }
.ai-node[data-tone="green"] .ai-marker { --tone: var(--c-green-soft); }

.ai-node.is-lit .ai-marker {
  border-color: rgb(var(--tone) / 0.8);
  box-shadow: 0 0 0 5px rgb(var(--tone) / 0.1);
}

.ai-pipeline.has-focus .ai-node:not(.is-active) {
  opacity: 0.38;
}

.ai-node.is-active .ai-node-btn {
  border-color: rgb(var(--c-cyan) / 0.45);
  background: rgb(var(--c-cyan) / 0.06);
  box-shadow: 0 0 40px -16px rgb(var(--c-cyan) / 0.55);
}

@media (min-width: 1024px) {
  .ai-node.is-active .ai-node-btn {
    transform: translateX(8px);
  }
}

.ai-node.is-active .ai-marker {
  background: rgb(var(--tone));
  color: var(--color-navy);
  box-shadow: 0 0 0 6px rgb(var(--tone) / 0.16), 0 0 32px rgb(var(--tone) / 0.5);
}

.ai-node-arrow {
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
  opacity: 0.4;
}

.ai-node.is-active .ai-node-arrow {
  transform: translateX(5px);
  opacity: 1;
}

.ai-detail-body {
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.ai-detail-body.is-swapping {
  opacity: 0;
  transform: translateY(6px);
}

.ai-chip {
  border: 1px solid rgb(255 255 255 / 0.14);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.ai-chip:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  background: rgb(var(--c-cyan) / 0.06);
}

/* --------------------------------------------------------------------------
   10. Engineering modules
   -------------------------------------------------------------------------- */
.eng-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #fff;
  transition: transform 0.45s var(--ease), border-color 0.35s var(--ease), box-shadow 0.45s var(--ease);
}

/* Featured dark module (higher specificity, so it never depends on stylesheet order) */
.eng-card.eng-card-dark {
  border-color: rgb(var(--c-cyan) / 0.14);
  /* Diagonal balance from the logo: blue/cyan top-left ↔ green bottom-right */
  background:
    radial-gradient(70% 80% at 0% 0%, rgb(var(--c-primary) / 0.55), transparent 65%),
    radial-gradient(45% 50% at 0% 0%, rgb(var(--c-cyan) / 0.18), transparent 70%),
    radial-gradient(70% 80% at 100% 100%, rgb(var(--c-green) / 0.42), transparent 65%),
    radial-gradient(45% 50% at 100% 100%, rgb(var(--c-green-soft) / 0.14), transparent 70%),
    var(--color-navy);
  color: #fff;
}

.eng-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-cyan), var(--color-green));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}

.eng-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 2px 4px rgb(var(--c-navy) / 0.04), 0 28px 50px -24px rgb(var(--c-primary) / 0.4);
}

.eng-card:hover::after {
  opacity: 1;
}

.eng-lines {
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.eng-lines path,
.eng-lines line {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.1s var(--ease);
}

.eng-card:hover .eng-lines {
  opacity: 1;
}

.eng-card:hover .eng-lines path,
.eng-card:hover .eng-lines line {
  stroke-dashoffset: 0;
}

.eng-arrow {
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.eng-card:hover .eng-arrow {
  transform: translateX(5px);
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.eng-tag {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.eng-card:hover .eng-tag {
  border-color: rgb(var(--c-primary) / 0.25);
}

/* --------------------------------------------------------------------------
   11. Security architecture
   -------------------------------------------------------------------------- */
/* SVG uses a 0–100 viewBox, so stroke values are in those units */
.sec-line {
  stroke: rgb(var(--c-cyan) / 0.3);
  stroke-width: 0.25;
  fill: none;
}

.sec-ring {
  stroke: rgb(var(--c-cyan) / 0.16);
  stroke-width: 0.2;
  stroke-dasharray: 0.8 1.4;
  fill: none;
}

.sec-packet {
  stroke: var(--color-cyan);
  stroke-width: 0.6;
  stroke-linecap: round;
  fill: none;
  stroke-dasharray: 0.08 0.92;
  animation: packet-in 3.6s linear infinite;
}

.sec-packet.is-green {
  stroke: var(--color-green-soft);
}

.sec-packet:nth-of-type(2) { animation-delay: -0.7s; }
.sec-packet:nth-of-type(3) { animation-delay: -1.4s; }
.sec-packet:nth-of-type(4) { animation-delay: -2.1s; }
.sec-packet:nth-of-type(5) { animation-delay: -2.8s; }

.sec-core {
  background:
    radial-gradient(circle at 50% 35%, rgb(var(--c-cyan) / 0.25), transparent 65%),
    rgb(var(--c-navy-800));
  border: 1px solid rgb(var(--c-cyan) / 0.45);
  box-shadow: 0 0 0 10px rgb(var(--c-cyan) / 0.05), 0 0 0 22px rgb(var(--c-cyan) / 0.03),
    0 0 60px rgb(var(--c-cyan) / 0.25);
}

.sec-node {
  background: rgb(var(--c-navy-deep) / 0.92);
  border: 1px solid rgb(var(--c-cyan) / 0.25);
  transition: border-color 0.35s var(--ease), box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
}

.sec-node:hover {
  border-color: var(--color-cyan);
  box-shadow: 0 0 30px -6px rgb(var(--c-cyan) / 0.45);
}

.sec-node.is-green {
  border-color: rgb(var(--c-green-soft) / 0.35);
}

.sec-node.is-green:hover {
  border-color: var(--color-green-soft);
  box-shadow: 0 0 30px -6px rgb(var(--c-green-soft) / 0.4);
}

.sec-item {
  border-top: 1px solid rgb(255 255 255 / 0.1);
  transition: border-color 0.3s var(--ease);
}

.sec-item:hover {
  border-color: rgb(var(--c-cyan) / 0.6);
}

/* --------------------------------------------------------------------------
   12. About markers
   -------------------------------------------------------------------------- */
.expertise-item {
  border-top: 1px solid var(--color-border);
  transition: border-color 0.35s var(--ease);
}

.expertise-item::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: #fff;
  border: 2px solid var(--color-primary);
  transition: background-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.expertise-item:hover {
  border-color: var(--color-primary);
}

.expertise-item:hover::before {
  background: var(--color-cyan);
  transform: scale(1.3);
}

/* --------------------------------------------------------------------------
   13. Contact
   -------------------------------------------------------------------------- */
.contact-overlay {
  background:
    linear-gradient(115deg, rgb(var(--c-navy)) 25%, rgb(var(--c-navy) / 0.88) 55%, rgb(var(--c-primary) / 0.7) 100%);
}

/* Channel cards — email (cyan, glow top-left) and phone (green, glow bottom-right)
   so the pair reads as one diagonal, like the logo */
.channel-card {
  --tone: var(--c-cyan);
  border: 1px solid rgb(255 255 255 / 0.1);
  background: linear-gradient(160deg, rgb(255 255 255 / 0.07), rgb(255 255 255 / 0.02));
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform 0.45s var(--ease), border-color 0.35s var(--ease), box-shadow 0.45s var(--ease);
}

.channel-card.is-phone {
  --tone: var(--c-green-soft);
}

.channel-card::before {
  content: "";
  position: absolute;
  width: 70%;
  aspect-ratio: 1;
  border-radius: 999px;
  background: radial-gradient(closest-side, rgb(var(--tone) / 0.2), transparent);
  pointer-events: none;
  transition: opacity 0.45s var(--ease), transform 0.6s var(--ease);
}

.channel-card.is-email::before {
  top: -35%;
  left: -20%;
}

.channel-card.is-phone::before {
  bottom: -35%;
  right: -20%;
}

.channel-card:hover {
  transform: translateY(-4px);
  border-color: rgb(var(--tone) / 0.45);
  box-shadow: 0 30px 60px -30px rgb(var(--tone) / 0.45);
}

.channel-card:hover::before {
  transform: scale(1.15);
}

.channel-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid rgb(var(--tone) / 0.4);
  background: rgb(var(--tone) / 0.1);
  color: rgb(var(--tone));
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}

.channel-card:hover .channel-icon {
  background: rgb(var(--tone));
  color: var(--color-navy);
}

.channel-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgb(255 255 255 / 0.12);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgb(255 255 255 / 0.75);
}

.channel-dot {
  position: relative;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: rgb(var(--tone));
}

.channel-dot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgb(var(--tone));
  animation: dot-ping 2.4s var(--ease) infinite;
}

/* Green action button (navy text for contrast) */
.btn-green {
  background: var(--color-green-soft);
  color: var(--color-navy);
}

.btn-green:hover {
  background: #fff;
}

.btn-copy.is-copied {
  border-color: var(--color-green-soft);
  color: var(--color-green-soft);
}

/* Hub between the two channels: vertical connector on mobile, horizontal on desktop */
.channel-hub {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hub-link {
  position: relative;
  width: 2px;
  height: 28px;
  overflow: hidden;
  background: linear-gradient(180deg, rgb(var(--c-cyan) / 0.15), rgb(var(--c-cyan) / 0.5));
}

.hub-link.is-green {
  background: linear-gradient(180deg, rgb(var(--c-green-soft) / 0.5), rgb(var(--c-green-soft) / 0.15));
}

.hub-link::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 40%;
  background: #fff;
  opacity: 0.8;
  animation: hub-packet-y 1.8s linear infinite;
}

.hub-core {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  flex: none;
  border-radius: 22px;
  background:
    radial-gradient(circle at 30% 25%, rgb(var(--c-cyan) / 0.3), transparent 60%),
    radial-gradient(circle at 75% 80%, rgb(var(--c-green) / 0.3), transparent 60%),
    rgb(var(--c-navy-800));
  border: 1px solid rgb(var(--c-cyan) / 0.4);
  box-shadow: 0 0 0 8px rgb(var(--c-cyan) / 0.05), 0 0 0 18px rgb(var(--c-cyan) / 0.03),
    0 0 50px rgb(var(--c-cyan) / 0.25);
}

@media (min-width: 1024px) {
  .channel-hub {
    flex-direction: row;
  }

  .hub-link {
    width: 44px;
    height: 2px;
    background: linear-gradient(90deg, rgb(var(--c-cyan) / 0.15), rgb(var(--c-cyan) / 0.6));
  }

  .hub-link.is-green {
    background: linear-gradient(90deg, rgb(var(--c-green-soft) / 0.6), rgb(var(--c-green-soft) / 0.15));
  }

  .hub-link::after {
    width: 40%;
    height: 100%;
    animation-name: hub-packet-x;
  }
}

@media (min-width: 1280px) {
  .hub-link {
    width: 64px;
  }
}

/* Supporting nodes: location, LinkedIn, next steps */
.contact-node {
  border: 1px solid rgb(255 255 255 / 0.1);
  background: rgb(var(--c-navy-deep) / 0.55);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color 0.35s var(--ease);
}

.contact-node:hover {
  border-color: rgb(var(--c-cyan) / 0.35);
}

.next-step-num {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: none;
  border-radius: 8px;
  border: 1px solid rgb(var(--c-green-soft) / 0.35);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-green-soft);
}

@keyframes hub-packet-x {
  from { transform: translateX(-100%); }
  to { transform: translateX(250%); }
}

@keyframes hub-packet-y {
  from { transform: translateY(-100%); }
  to { transform: translateY(250%); }
}

@keyframes dot-ping {
  0% { transform: scale(1); opacity: 0.8; }
  80%, 100% { transform: scale(2.8); opacity: 0; }
}

/* Scroll to top */
.to-top {
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  /* Hide: fade first, then switch visibility off */
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease),
    background-color 0.3s var(--ease), visibility 0s linear 0.4s;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  /* Show: visibility switches on immediately, then fades in */
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease),
    background-color 0.3s var(--ease), visibility 0s;
}

.to-top:hover {
  background: var(--color-primary);
}

.to-top-track {
  fill: none;
  stroke: rgb(255 255 255 / 0.12);
  stroke-width: 2;
}

.to-top-progress {
  fill: none;
  stroke: var(--color-cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
}

.to-top-arrow {
  transition: transform 0.3s var(--ease);
}

.to-top:hover .to-top-arrow,
.to-top:focus-visible .to-top-arrow {
  transform: rotate(-90deg) translateX(4px);
}

/* --------------------------------------------------------------------------
   14. Reveal states (only when JS is running; content stays visible otherwise)
   -------------------------------------------------------------------------- */
.js [data-reveal],
.js [data-reveal-item],
.js [data-hero-item],
.js [data-hero-card],
.js [data-hero-net] {
  opacity: 0;
}

/* AI detail stage label tones */
.ai-stage[data-tone="blue"] { color: var(--color-blue); }
.ai-stage[data-tone="cyan"] { color: var(--color-cyan); }
.ai-stage[data-tone="green"] { color: var(--color-green-soft); }


.js .site-header[data-hero-header] {
  opacity: 0;
}

.media-zoom img {
  transition: transform 1.2s var(--ease);
}

.media-zoom:hover img {
  transform: scale(1.04);
}

/* --------------------------------------------------------------------------
   15. Keyframes
   -------------------------------------------------------------------------- */
@keyframes packet {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

@keyframes packet-in {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -1; }
}

@keyframes packet-x {
  from { transform: translateX(-120px); }
  to { transform: translateX(calc(100vw)); }
}

@keyframes packet-y {
  from { transform: translateY(-80px); }
  to { transform: translateY(1600px); }
}

@keyframes halo {
  0%, 100% { transform: scale(0.6); opacity: 0.9; }
  50% { transform: scale(1.5); opacity: 0; }
}

/* --------------------------------------------------------------------------
   16. Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal],
  .js [data-reveal-item],
  .js [data-hero-item],
  .js [data-hero-card],
  .js [data-hero-net],
  .js .site-header[data-hero-header] {
    opacity: 1;
  }

  .hub-link::after,
  .channel-dot::after,
  .flow-track::after,
  .hero-network .net-line-flow,
  .sec-packet,
  .hero-network .net-halo {
    display: none;
  }

  .flow-progress {
    transform: none !important;
  }

  .lifecycle-desc {
    opacity: 1 !important;
    transform: none !important;
  }
}