/* ==========================================================================
   Tiusanen Consulting Ltd - High-Performance Engineering & Game Redesign (v2)
   Theme: Sleek High-Tech Dark Mode (#0a0e17) with Cyan (#00f0ff) & Indigo Accents
   ========================================================================== */

:root {
  --bg-primary: #0b111a;
  --bg-secondary: #121926;
  --bg-surface: #182232;
  --bg-surface-elevated: #202d42;

  /* Brushed Stainless Steel Material Design Tokens */
  --steel-100: #f1f5f9;
  --steel-200: #e2e8f0;
  --steel-300: #cbd5e1;
  --steel-400: #94a3b8;
  --steel-500: #64748b;
  --steel-600: #475569;

  --steel-plate-bg: linear-gradient(135deg, rgba(20, 29, 46, 0.88) 0%, rgba(12, 17, 28, 0.94) 100%);
  --steel-plate-hover: linear-gradient(135deg, rgba(26, 38, 60, 0.95) 0%, rgba(16, 24, 38, 0.98) 100%);

  --border-subtle: rgba(203, 213, 225, 0.12);
  --border-card: rgba(203, 213, 225, 0.22);
  --border-card-hover: rgba(0, 240, 255, 0.55);

  --accent-cyan: #00f0ff;
  --accent-cyan-glow: rgba(0, 240, 255, 0.35);
  --accent-cyan-dim: rgba(0, 240, 255, 0.12);
  --accent-amber: #eaa139;
  --accent-amber-glow: rgba(234, 161, 57, 0.35);
  --accent-amber-dim: rgba(234, 161, 57, 0.12);
  --accent-indigo: #6366f1;
  --accent-indigo-glow: rgba(99, 102, 241, 0.35);
  --accent-indigo-dim: rgba(99, 102, 241, 0.14);
  --accent-violet: #8b5cf6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-steel: #cbd5e1;
  --text-muted: #64748b;
  --text-accent: #00f0ff;

  --font-sans: 'Montserrat', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Geometos', 'Montserrat', sans-serif;
  --font-display-serif: 'BioRhyme', Georgia, serif;
  --font-display-script: 'Milestone', cursive, sans-serif;
  --font-condensed: 'Anton', 'Montserrat', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --header-height: 72px;
  --container-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Machined steel plate shadows: specular top highlight + depth shadow */
  --shadow-steel-plate: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 8px 32px -6px rgba(0, 0, 0, 0.65);
  --shadow-steel-hover: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 12px 36px -6px rgba(0, 0, 0, 0.75), 0 0 24px rgba(0, 240, 255, 0.22);
  --shadow-glow: 0 0 24px rgba(0, 240, 255, 0.22);
  --shadow-glow-indigo: 0 0 24px rgba(99, 102, 241, 0.25);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@font-face {
  font-family: 'Montserrat';
  src: url('fonts/Montserrat-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Anton';
  src: url('fonts/anton-regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Geometos';
  src: url('fonts/Geometos.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('fonts/JetBrainsMono-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'BioRhyme';
  src: url('fonts/biorhyme-variable.ttf') format('truetype');
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Milestone';
  src: url('fonts/MilestoneFreeVersion-Script.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

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

html {
  overflow-y: scroll;
  scrollbar-gutter: stable;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background-image:
    radial-gradient(circle at 15% 10%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 25%, rgba(0, 240, 255, 0.10) 0%, transparent 42%),
    radial-gradient(circle at 50% 70%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Brushed Steel Anisotropic Texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.015) 0px, rgba(255, 255, 255, 0.015) 1px, transparent 1px, transparent 3px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 100% 100%, 64px 64px;
  pointer-events: none;
  z-index: 0;
}

/* Brushed Steel Micro-mesh Overlay across dark metallic slate canvas */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("images/ui/BgPattern_Tiling.png");
  background-repeat: repeat;
  background-position: center top;
  background-size: 1125px auto;
  opacity: 0.20;
  pointer-events: none;
  z-index: 0;
}

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 14, 23, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-card);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 100;
  transition: background-color var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(10, 14, 23, 0.94);
}

.nav-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-nav-logo {
  height: 42px;
  width: auto;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 0px transparent);
  transition: transform var(--transition-fast), filter var(--transition-normal);
}

.brand-link:hover .brand-nav-logo {
  transform: scale(1.025);
  /* Backlit holographic halo glow tracing the exact PNG alpha outline */
  filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.45)) drop-shadow(0 0 20px rgba(99, 102, 241, 0.22));
}

.brand-emblem-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #070a10;
  border: 1.5px solid rgba(203, 213, 225, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 0 14px rgba(0, 240, 255, 0.2);
  flex-shrink: 0;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.brand-link:hover .brand-emblem-icon {
  border-color: var(--accent-cyan);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 0 20px rgba(0, 240, 255, 0.45);
  transform: scale(1.05);
}

.brand-emblem-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: invert(1);
}

.brand-text-lockup {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  letter-spacing: 0.06em;
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 65%, #94a3b8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-transform: uppercase;
  line-height: 0.95;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--accent-cyan);
  text-transform: uppercase;
  font-weight: 700;
  margin-top: 4px;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  padding: 8px 2px;
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap; /* Prevent menu item text wrapping */
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan-glow);
  transition: width var(--transition-normal);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px;
  cursor: pointer;
  line-height: 0;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #040810;
  font-weight: 700;
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
}

.btn-primary:hover {
  background: #33f3ff;
  box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
  transform: translateY(-2px);
}

.btn-secondary {
  background: linear-gradient(135deg, rgba(203, 213, 225, 0.12) 0%, rgba(148, 163, 184, 0.05) 100%);
  color: var(--steel-200);
  border: 1px solid rgba(203, 213, 225, 0.32);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, rgba(203, 213, 225, 0.22) 0%, rgba(148, 163, 184, 0.12) 100%);
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 0 20px rgba(203, 213, 225, 0.25);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(17, 26, 45, 0.85);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.badge:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.badge-cyan {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border-color: rgba(0, 240, 255, 0.25);
}

.badge-indigo {
  background: var(--accent-indigo-dim);
  color: #a5b4fc;
  border-color: rgba(99, 102, 241, 0.25);
}

.badge-silicon {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.35);
}

.badge-silicon:hover {
  border-color: #fbbf24;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.3);
  color: #fef3c7;
}

.badge-preproton {
  background: rgba(236, 72, 153, 0.12);
  color: #f472b6;
  border-color: rgba(236, 72, 153, 0.35);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: calc(var(--header-height) + 70px);
  padding-bottom: 90px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 55% at 72% 38.2%, rgba(55, 78, 110, 0.68) 0%, rgba(26, 38, 58, 0.32) 48%, transparent 75%),
    radial-gradient(ellipse 50% 50% at 15% 20%, rgba(99, 102, 241, 0.10) 0%, transparent 60%);
}

.hero-content {
  max-width: 880px;
  position: relative;
  z-index: 2;
}

.hero-illustration-ambient {
  position: absolute;
  top: 50%;
  right: -5%;
  transform: translateY(-50%);
  width: min(580px, 48vw);
  aspect-ratio: 1.198;
  background: url("images/ui/Illustration_Letters.png") no-repeat center center;
  background-size: contain;
  opacity: 0.065;
  pointer-events: none;
  z-index: 1;
  filter: contrast(1.1) brightness(1.15);
  transition: opacity var(--transition-normal);
}

html[data-theme="steel"] .hero-illustration-ambient {
  opacity: 0.04;
  filter: invert(1) contrast(1.1) brightness(0.85);
}

@media (max-width: 992px) {
  .hero-illustration-ambient {
    top: auto;
    bottom: -30px;
    right: 50%;
    transform: translateX(50%);
    width: 280px;
    opacity: 0.035;
  }
}

.hero-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 8px 30px 8px 10px;
  background: linear-gradient(135deg, rgba(203, 213, 225, 0.09) 0%, rgba(15, 23, 42, 0.88) 100%);
  border: 1px solid rgba(203, 213, 225, 0.24);
  border-radius: var(--radius-full);
  margin-bottom: 28px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45), 0 0 16px rgba(0, 240, 255, 0.1);
}

.hero-badge-emblem {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
  overflow: visible;
}

.hero-badge-emblem img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: none;
  padding: 0;
  display: block;
}

.hero-badge-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-badge-quote {
  font-family: var(--font-display-serif);
  font-weight: 700;
  font-size: 0.98rem;
  color: #ffffff;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.hero-badge-sub {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-secondary);
}

.hero-badge-sub-divider {
  opacity: 0.4;
}

.hero-booking-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
}

.hero-booking-link:hover {
  color: #ffffff;
  text-decoration: underline;
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
}

.hero-status-aside {
  font-style: italic;
  opacity: 0.85;
  color: var(--accent-cyan);
}

html[data-theme="steel"] .hero-status-aside {
  color: #0369a1;
}

.hero-pill-divider {
  width: 1px;
  height: 14px;
  background: rgba(203, 213, 225, 0.35);
  display: inline-block;
}

.steel-card-trigger-box {
  margin-top: 24px;
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid rgba(203, 213, 225, 0.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

html[data-theme="steel"] .steel-card-trigger-box {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(15, 23, 42, 0.2);
}

html[data-theme="hybrid"] .steel-card-trigger-box {
  background: rgba(10, 14, 23, 0.85);
  border-color: rgba(203, 213, 225, 0.25);
}

.trigger-box-title {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

html[data-theme="steel"] .trigger-box-title {
  color: #0369a1;
}

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

.trigger-box-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

html[data-theme="steel"] .trigger-box-list li {
  color: #1e293b;
}

.trigger-check {
  color: var(--accent-cyan);
  font-weight: 800;
  flex-shrink: 0;
  font-family: var(--font-mono);
}

html[data-theme="steel"] .trigger-check {
  color: #0284c7;
}

.contact-card-subtext {
  font-size: 0.82rem;
  color: #94a3b8;
  font-family: var(--font-mono);
  margin-top: 2px;
  padding-left: 12px;
}

html[data-theme="steel"] .contact-card-subtext {
  color: #475569;
}

.footer-hallmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.footer-hallmark-icon {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
  overflow: visible;
}

.footer-hallmark-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: none;
  padding: 0;
}

html[data-theme="steel"] .footer-hallmark-icon img {
  filter: none;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: clamp(2.3rem, 5.2vw, 4.1rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  margin-bottom: 24px;
}


.hero-lead {
  font-size: clamp(1.1rem, 2vw, 1.28rem);
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 760px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 54px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  padding-top: 36px;
  border-top: 1px solid var(--border-subtle);
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #ffffff;
  text-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
}

.metric-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ==========================================================================
   Sections Common
   ========================================================================== */
.section {
  padding-top: 36px;
  padding-bottom: 84px;
  position: relative;
}

.section-header {
  margin-bottom: 52px;
  max-width: 720px;
  padding-left: 20px;
  border-left: 3px solid rgba(203, 213, 225, 0.35);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 4px 0 4px 6px;
  border-color: transparent transparent transparent var(--accent-amber);
}

.section-title {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: clamp(1.85rem, 3.6vw, 2.65rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.18;
  letter-spacing: 0.035em;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Capabilities / Services Grid
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--steel-plate-bg);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-steel-plate);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(203, 213, 225, 0.45), transparent);
  opacity: 0.35; /* Permanent, subtle top edge specular reflection - static hardware aesthetic */
}

.service-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--accent-cyan-dim);
  border: 1px solid rgba(0, 240, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.service-card h3 {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  line-height: 1.3;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.service-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.service-highlights li {
  font-size: 0.85rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-highlights li::before {
  content: '▸';
  color: var(--accent-cyan);
  font-size: 0.9rem;
}

/* ==========================================================================
   Proven Track Record Strip (Simplified High-Impact Portfolio Summary)
   ========================================================================== */
.proven-track-record-strip {
  margin-top: 48px;
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.75) 0%, rgba(10, 14, 23, 0.95) 100%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 32px 36px;
  position: relative;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
}

.proven-track-record-strip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.45), transparent);
}

.track-record-header {
  margin-bottom: 24px;
}

.track-record-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.track-record-title {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.35;
}

.track-record-lead {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.track-record-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 20px;
  margin-bottom: 24px;
}

@media (max-width: 820px) {
  .track-record-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

.track-record-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(203, 213, 225, 0.08);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.track-record-item:hover {
  background: rgba(15, 23, 42, 0.85);
  border-color: rgba(0, 240, 255, 0.35);
}

.track-record-bullet {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
  margin-top: 6px;
  flex-shrink: 0;
}

.track-record-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.track-client {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #f1f5f9;
}

.track-scope {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.track-record-slush-note {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(203, 213, 225, 0.16);
  border-left: 3px solid var(--accent-cyan);
  border-radius: var(--radius-sm);
  flex-wrap: wrap;
}

.slush-note-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-amber);
  background: rgba(234, 161, 57, 0.15);
  border: 1px solid rgba(234, 161, 57, 0.35);
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.track-record-slush-note p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
  flex: 1;
}

.slush-note-link {
  color: var(--accent-cyan);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}

.slush-note-link:hover {
  color: #fff;
}

/* ==========================================================================
   Projects Grid & Badges
   ========================================================================== */
.project-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-btn {
  background: rgba(17, 26, 45, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 18px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.filter-btn.active {
  background: var(--accent-cyan-dim);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
  min-height: 480px; /* Baseline stability across minimal card filters */
  transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden; /* Clean boundary during container height transitions */
}

.project-card {
  background: var(--steel-plate-bg);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-steel-plate);
  position: relative;
  overflow: hidden;
  transition: opacity 0.24s cubic-bezier(0.4, 0, 0.2, 1), transform 0.24s cubic-bezier(0.4, 0, 0.2, 1), border-color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
}

.project-card:hover {
  border-color: rgba(0, 240, 255, 0.4); /* Premium cyan highlight showing clickability */
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 12px 36px -6px rgba(0, 0, 0, 0.7), 0 0 16px rgba(0, 240, 255, 0.1);
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.project-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.project-client {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.project-title {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  line-height: 1.3;
}

.project-desc {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.project-impact {
  font-size: 0.88rem;
  color: #e2e8f0;
  background: rgba(10, 14, 23, 0.6);
  border-left: 3px solid var(--accent-cyan);
  padding: 8px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.project-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}

.about-bio {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-bio p {
  font-size: 1.02rem;
  line-height: 1.7;
}

.about-highlight-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  box-shadow: var(--shadow-card);
}

.about-highlight-box h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.principles-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.principle-item {
  display: flex;
  gap: 14px;
}

.principle-icon {
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

.principle-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.principle-text p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* About Section Editorial Quote & Signature */
.about-quote-card {
  margin-top: 36px;
  padding: 32px 36px;
  background: linear-gradient(135deg, rgba(20, 29, 46, 0.85) 0%, rgba(12, 17, 28, 0.95) 100%);
  border: 1px solid rgba(203, 213, 225, 0.16);
  border-left: 4px solid var(--accent-amber);
  border-radius: var(--radius-md);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 12px 32px rgba(0, 0, 0, 0.55);
  position: relative;
  overflow: hidden;
}

.about-quote-card::before {
  content: '“';
  position: absolute;
  top: -20px;
  right: 28px;
  font-family: var(--font-display-serif);
  font-size: 8.5rem;
  line-height: 1;
  color: rgba(234, 161, 57, 0.08);
  pointer-events: none;
}

.about-editorial-quote {
  font-family: var(--font-display-serif);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.65;
  color: #f8fafc;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.about-editorial-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(203, 213, 225, 0.12);
  padding-top: 16px;
  position: relative;
  z-index: 1;
}

.executive-signature {
  font-family: var(--font-display-script);
  font-size: 2.3rem;
  color: #ffffff;
  letter-spacing: 0.02em;
  line-height: 1;
}

.executive-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ==========================================================================
   Pedigree & Rare Heritage Section
   ========================================================================== */
.pedigree-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.pedigree-card {
  background: var(--steel-plate-bg);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-steel-plate);
}

.pedigree-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(203, 213, 225, 0.45), transparent);
  opacity: 0.35; /* Permanent, subtle top edge specular reflection - static hardware aesthetic */
}

.pedigree-badge-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #a5b4fc;
}

.pedigree-title {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-primary);
  line-height: 1.3;
}

.pedigree-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.pedigree-key-proof {
  font-size: 0.88rem;
  color: #e2e8f0;
  background: rgba(10, 14, 23, 0.6);
  border-left: 3px solid var(--accent-indigo);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ==========================================================================
   B2B Engagement Models
   ========================================================================== */
.engagement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.engagement-card {
  background: var(--steel-plate-bg);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  box-shadow: var(--shadow-steel-plate);
  overflow: hidden;
}

.engagement-card.featured {
  border-color: rgba(0, 240, 255, 0.5);
  box-shadow: var(--shadow-steel-plate), 0 0 20px rgba(0, 240, 255, 0.18);
  background: linear-gradient(180deg, rgba(22, 34, 54, 0.94) 0%, rgba(13, 19, 32, 0.98) 100%);
}

.engagement-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
}

.engagement-pill {
  position: static;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--accent-cyan);
  color: #040810;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.engagement-tier {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.engagement-rate {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.rate-amount {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.rate-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.engagement-summary {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.engagement-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.engagement-list li {
  font-size: 0.87rem;
  color: #cbd5e1;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.engagement-list li svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-wrapper {
  background: linear-gradient(135deg, rgba(16, 25, 45, 0.92) 0%, rgba(10, 14, 23, 0.95) 100%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.contact-wrapper::after {
  content: '';
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.contact-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 10px;
}

.contact-method-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  background: rgba(10, 14, 23, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.contact-method-card:hover {
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  transform: translateX(4px);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.15);
}

.contact-method-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(0, 240, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-method-info {
  display: flex;
  flex-direction: column;
}

.contact-method-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-method-value {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   Original "Brain for Hire" Ambient Watermark
   Preserving authentic dark shades & fills debossed into metallic dark slate
   ========================================================================== */
.ambient-watermark {
  position: absolute;
  top: 38.2%; /* Golden ratio vertical anchor (~38.2% from hero top) */
  right: max(48px, calc((100vw - 1200px) / 2 + 40px)); /* Grid-aligned breathing room; never touches viewport edge */
  transform: translateY(-50%);
  width: clamp(380px, 32vw, 490px);
  height: clamp(380px, 32vw, 490px);
  max-width: 44%;
  background: url("images/ui/Logo_Faded.png") no-repeat center center;
  background-size: contain;
  opacity: 0.95;
  pointer-events: none;
  z-index: 1;
  /* Authentic metallic deboss depth: specular catch on lower rim and soft top bevel */
  filter: drop-shadow(0 1px 1px rgba(255, 255, 255, 0.14)) drop-shadow(0 -1.5px 2px rgba(0, 0, 0, 0.45));
}

@media (max-width: 992px) {
  .hero {
    background:
      radial-gradient(ellipse 70% 55% at 76% 38.2%, rgba(55, 78, 110, 0.65) 0%, rgba(26, 38, 58, 0.28) 48%, transparent 75%),
      radial-gradient(ellipse 60% 40% at 20% 18%, rgba(99, 102, 241, 0.10) 0%, transparent 60%);
  }

  .ambient-watermark {
    top: 38.2%; /* Lowered to match landscape/desktop golden ratio top position */
    left: auto;
    right: max(16px, calc((100vw - 720px) / 2 + 16px)); /* Kept at current x-dimension spot */
    bottom: auto;
    transform: translateY(-50%);
    width: clamp(190px, 46vw, 300px);
    height: clamp(190px, 46vw, 300px);
    max-width: 52%;
    opacity: 0.85;
  }
}

@media (max-width: 992px) and (orientation: landscape) {
  .hero {
    background:
      radial-gradient(ellipse 65% 55% at 75% 38.2%, rgba(55, 78, 110, 0.65) 0%, rgba(26, 38, 58, 0.28) 48%, transparent 75%),
      radial-gradient(ellipse 50% 40% at 15% 20%, rgba(99, 102, 241, 0.10) 0%, transparent 60%);
  }

  .ambient-watermark {
    width: clamp(180px, 28vw, 240px);
    height: clamp(180px, 28vw, 240px);
    max-width: 36%;
    top: 38.2%;
    left: auto;
    right: max(24px, 5%);
    transform: translateY(-50%);
    opacity: 0.85;
  }
}

@media (orientation: portrait) and (min-width: 993px) {
  .hero {
    background:
      radial-gradient(ellipse 70% 55% at 76% 38.2%, rgba(55, 78, 110, 0.65) 0%, rgba(26, 38, 58, 0.28) 48%, transparent 75%),
      radial-gradient(ellipse 60% 40% at 20% 18%, rgba(99, 102, 241, 0.10) 0%, transparent 60%);
  }

  .ambient-watermark {
    top: 38.2%;
    left: auto;
    right: max(36px, calc((100vw - 960px) / 2 + 24px));
    bottom: auto;
    transform: translateY(-50%);
    width: clamp(260px, 36vw, 380px);
    height: clamp(260px, 36vw, 380px);
    max-width: 44%;
    opacity: 0.85;
  }
}

.contact-title.serif-heading {
  font-family: var(--font-display-serif);
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

/* ==========================================================================
   Stainless Steel Business Card (Digital Twin of Laser-Engraved Metallic Card)
   ========================================================================== */
.steel-business-card-showcase {
  perspective: 1200px;
  -webkit-perspective: 1200px;
  display: flex;
  flex-direction: column;
  gap: 36px;
  width: 100%;
}

.steel-card-3d {
  width: 100%;
  min-height: 330px;
  position: relative;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: transform 0.65s cubic-bezier(0.2, 0.8, 0.2, 1);
  cursor: pointer;
}

.steel-card-3d.flipped {
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
}

.steel-card-face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 14px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 26px 28px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  /* Anisotropic brushed stainless steel gradient */
  background:
    radial-gradient(ellipse at 25% 0%, rgba(255, 255, 255, 0.16) 0%, transparent 60%),
    linear-gradient(120deg, #2a3447 0%, #1c2434 22%, #263143 45%, #151d2a 55%, #242e3f 78%, #111722 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 -1px 0 rgba(0, 0, 0, 0.75),
    inset 1px 0 0 rgba(255, 255, 255, 0.15),
    inset -1px 0 0 rgba(0, 0, 0, 0.5),
    0 16px 36px -6px rgba(0, 0, 0, 0.75),
    0 0 24px rgba(0, 240, 255, 0.08);
}

/* Strict backface isolation: prevent any child from rendering when card face is turned */
.steel-card-face * {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.steel-card-front {
  transform: rotateY(0deg) translateZ(1px);
  -webkit-transform: rotateY(0deg) translateZ(1px);
  transition: visibility 0s 0.3s;
}

.steel-card-back {
  transform: rotateY(180deg) translateZ(1px);
  -webkit-transform: rotateY(180deg) translateZ(1px);
  transition: visibility 0s 0.3s;
  background:
    radial-gradient(ellipse at 75% 100%, rgba(255, 255, 255, 0.14) 0%, transparent 60%),
    linear-gradient(120deg, #242e3f 0%, #161e2c 25%, #2a3447 52%, #18202e 58%, #273244 82%, #111722 100%);
}

/* Visibility transition locks: eliminates bleed-through across all browser engines */
.steel-card-3d:not(.flipped) .steel-card-front {
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

.steel-card-3d:not(.flipped) .steel-card-back {
  visibility: hidden;
  pointer-events: none;
  transition-delay: 0.3s;
}

.steel-card-3d.flipped .steel-card-front {
  visibility: hidden;
  pointer-events: none;
  transition-delay: 0.3s;
}

.steel-card-3d.flipped .steel-card-back {
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

.steel-grain-overlay {
  position: absolute;
  inset: 0;
  background-image: url(images/ui/BgPattern_Tiling.png);
  background-size: 260px auto;
  opacity: 0.12;
  pointer-events: none;
}

.steel-card-watermark {
  position: absolute;
  top: -15%;
  right: -8%;
  width: 65%;
  height: 130%;
  background: url(images/ui/Logo_Faded.png) no-repeat center right;
  background-size: contain;
  opacity: 0.15;
  pointer-events: none;
  /* NO INVERSION: Authentic dark laser-etched deboss with specular light bevel */
  filter: contrast(1.8) brightness(0.12) drop-shadow(0 1px 0 rgba(255, 255, 255, 0.12));
}

.steel-card-watermark.back-watermark {
  opacity: 0.09;
  right: 0%;
  width: 75%;
}

.steel-card-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.steel-card-hallmark {
  display: flex;
  align-items: center;
  gap: 10px;
}

.steel-hallmark-icon {
  width: 22px;
  height: 22px;
  background: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
  object-fit: contain;
  padding: 0;
  filter: none;
}

.steel-hallmark-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--steel-300);
}

.steel-flip-trigger {
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--steel-200);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
  white-space: nowrap;
}

.steel-flip-trigger:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--accent-cyan);
  color: #ffffff;
  transform: translateY(-1px);
}

.steel-card-identity {
  position: relative;
  margin-top: 10px;
}

.steel-card-engraved-name {
  font-family: var(--font-heading);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #ffffff;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.9), 0 -1px 0 rgba(255, 255, 255, 0.18);
  margin-bottom: 4px;
}

.steel-card-engraved-title {
  font-family: var(--font-sans);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.steel-card-divider {
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.08) 80%, transparent 100%);
  margin-block: 8px;
}

.steel-card-coords {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.steel-coord-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.steel-coord-label {
  width: 58px;
  color: var(--steel-400);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.steel-coord-val {
  color: var(--steel-100);
  transition: color var(--transition-fast);
}

a.steel-coord-val:hover {
  color: var(--accent-cyan);
  text-decoration: underline;
}

.steel-card-bottom {
  position: relative;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.steel-spec-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--steel-400);
}

/* Card Back Styles */
.steel-company-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  color: #ffffff;
  text-transform: uppercase;
}

.steel-back-motto-wrapper {
  position: relative;
  margin-block: auto;
  padding-right: 0;
}

.steel-back-quote-mark {
  font-family: var(--font-display-serif);
  font-size: 2.8rem;
  line-height: 0.8;
  color: var(--accent-amber);
  margin-bottom: 4px;
}

.steel-back-motto {
  font-family: var(--font-display-serif);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.25;
  color: #ffffff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.9), 0 -1px 0 rgba(255, 255, 255, 0.15);
  margin-bottom: 8px;
}

.steel-back-subline {
  font-size: 0.85rem;
  color: var(--steel-300);
  line-height: 1.5;
}

.steel-card-back-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.steel-back-aside {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-style: italic;
  color: var(--accent-cyan);
}

.steel-brand-wordmark {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.8);
}

.steel-card-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.steel-card-hint {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #070a11;
  padding-block: 40px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand-title {
  color: var(--text-primary);
  font-weight: 700;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 992px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) {
  :root {
    --header-height: 64px;
  }

  html {
    scroll-padding-top: var(--header-height); /* Instantly docks section header into sticky mode under fixed nav on click */
  }

  .brand-badge {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: calc(var(--header-height) + 10px); /* 10px floating gap below header bar */
    right: 24px;
    left: auto;
    width: 260px; /* Compact premium panel width */
    z-index: 99; /* Render on top of page content */
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    flex-direction: column;
    align-items: stretch;
    transform: scaleY(0);
    transform-origin: top right; /* Grow downward from the hamburger icon corner */
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal) ease, opacity var(--transition-normal) ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  }

  .site-nav.open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    text-align: right !important; /* Elegant right-alignment matching the dropdown flow */
  }

  .nav-link {
    font-size: 1.05rem;
    padding: 10px 0;
  }

  .hero {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 60px;
  }

  .hero-metrics {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .contact-wrapper {
    padding: 32px 20px;
  }

  .contact-grid {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
    text-align: center !important;
  }

  /* .contact-details stretches to 100% width, so its children stretch to 100% of container naturally */
  .contact-details {
    width: 100% !important;
    max-width: 480px !important;
    margin-inline: auto !important;
  }

  .contact-methods {
    width: 100% !important;
    max-width: 480px !important;
    margin-inline: auto !important;
  }

  .contact-card-executive,
  .steel-business-card-showcase {
    margin-inline: auto !important;
    width: 100% !important;
    max-width: 480px !important;
    text-align: left !important;
  }

  .footer-content {
    flex-direction: column !important;
    text-align: center !important;
    gap: 24px !important;
  }

  .footer-brand {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
  }

  .footer-links {
    justify-content: center !important;
    flex-wrap: wrap !important;
    gap: 8px 16px !important;
  }

  .brand-link,
  .header-actions {
    position: relative !important;
    z-index: 10 !important;
  }

  /* Alternating background tones with top gradient fades to prevent sharp cutoff transitions */
  #pedigree,
  #case-studies {
    background: linear-gradient(to bottom, transparent 0%, var(--bg-secondary) 120px), var(--bg-secondary);
  }
  
  html[data-theme="steel"] #pedigree,
  html[data-theme="steel"] #case-studies {
    background: linear-gradient(to bottom, transparent 0%, #e2e8f0 120px), #e2e8f0;
  }





  /* Vertical Alignment Spine: anchors and groups stacked cards visually under their header */
  .services-grid,
  .pedigree-grid,
  .projects-grid,
  .engagement-grid {
    border-left: 2px solid rgba(203, 213, 225, 0.12);
    padding-left: 18px;
    margin-left: 1px; /* aligns exactly with the 3px header border left edge */
  }

  html[data-theme="steel"] .services-grid,
  html[data-theme="steel"] .pedigree-grid,
  html[data-theme="steel"] .projects-grid,
  html[data-theme="steel"] .engagement-grid {
    border-left-color: rgba(15, 23, 42, 0.12);
  }

  /* Horizontal Laser Dividers: sleek tech lines at the bottom of each section */
  .section {
    padding-top: 0; /* Set to 0 to completely eliminate empty gaps/bars between fixed nav and stuck headers on click */
    padding-bottom: 40px; /* Elegant vertical breathing room between adjacent sections */
  }

  .section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(203, 213, 225, 0.12) 20%, rgba(203, 213, 225, 0.12) 80%, transparent);
  }

  html[data-theme="steel"] .section::after {
    background: linear-gradient(90deg, transparent, rgba(15, 23, 42, 0.08) 20%, rgba(15, 23, 42, 0.08) 80%, transparent);
  }

  /* Interactive Sticky Section Headers: grounds mobile user context during scroll */
  .section-header {
    position: sticky;
    top: calc(var(--header-height) - 1px);
    z-index: 10;
    transition: none; /* Disable transition on mobile to prevent animation overlap glitches during rapid link jumps */
    
    /* Default (Un-stuck) State: Looks like a natural, connected part of the content layout */
    background: transparent;
    border-top: none;
    border-bottom: none;
    box-shadow: none;
    width: auto;
    max-width: none;
    margin-left: 1px; /* aligns exactly with vertical spine margin-left */
    margin-right: 0;
    padding-left: 18px; /* matches vertical spine padding-left */
    padding-right: 0;
    border-left: 2px solid rgba(203, 213, 225, 0.12); /* Identical style and color as the vertical grid spine below */
  }

  /* Stuck State: Morphs into a premium, full-width glassmorphic navigation bar */
  .section-header.is-stuck {
    background-color: #070a10; /* Solid fallback color to completely prevent transparent/text overlapping */
    background: linear-gradient(to bottom, rgba(7, 10, 16, 0.98) 0%, rgba(7, 10, 16, 0.94) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding-top: 12px;
    padding-bottom: 12px;
    
    /* Sleek laser-etched metallic micro-borders: polished top edge + subtle depth bottom */
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(203, 213, 225, 0.08);
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.4);
    
    /* Bulletproof edge-to-edge breakout of parent container padding and max-widths */
    width: auto;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding-left: 43px; /* Align text exactly to the pixel with the cards text start (43px) */
    padding-right: 24px;
    border-left: none; /* remove left border line for a clean bar layout */
  }

  html[data-theme="steel"] .section-header {
    background: transparent;
    border-top: none;
    border-bottom: none;
    box-shadow: none;
    width: auto;
    margin-left: 1px;
    margin-right: 0;
    padding-left: 18px;
    padding-right: 0;
    border-left: 2px solid rgba(15, 23, 42, 0.12); /* matches light theme vertical grid spine */
  }

  html[data-theme="steel"] .section-header.is-stuck {
    /* Polished Silver-Steel Plate variant for light theme when stuck */
    background: linear-gradient(to bottom, rgba(226, 232, 240, 0.95) 0%, rgba(203, 213, 225, 0.85) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.4);
    border-bottom-color: rgba(15, 23, 42, 0.12);
    box-shadow: 0 8px 20px -6px rgba(15, 23, 42, 0.08);
    
    width: auto;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding-left: 43px; /* Align text exactly to the pixel with the cards text start (43px) */
    padding-right: 24px;
    border-left: none;
  }

  /* Hide the lengthy subtitle on mobile to conserve premium vertical screen height */
  .section-subtitle {
    display: none;
  }

  .section-eyebrow {
    font-size: 0.72rem;
    margin-bottom: 4px;
  }

  .section-title {
    font-size: 1.15rem; /* compact and crisp for mobile toolbar */
    margin-bottom: 0;
  }
}

@media (max-width: 480px) {
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .theme-switcher-bar {
    bottom: 12px;
    right: 12px;
    left: 12px;
    justify-content: center;
  }
}

/* ==========================================================================
   Tech Spec Drawers & Interactive Case Study Screenshots
   ========================================================================== */
.tech-spec-drawer {
  margin-top: 18px;
  border-top: 1px dashed var(--border-subtle);
  padding-top: 14px;
}

html[data-theme="steel"] .tech-spec-drawer {
  border-top-style: solid;
  border-top-color: rgba(15, 23, 42, 0.12);
}

.tech-spec-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none; /* Hides default triangle marker on Chrome/Firefox */
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-cyan);
  user-select: none;
  outline: none;
}

.tech-spec-trigger::-webkit-details-marker {
  display: none; /* Hides default triangle marker on Safari */
}

html[data-theme="steel"] .tech-spec-trigger {
  color: #0369a1;
}

.tech-spec-trigger:hover {
  color: var(--text-primary);
}

html[data-theme="steel"] .tech-spec-trigger:hover {
  color: #0f172a;
}

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

.tech-spec-drawer[open] .chevron-icon {
  transform: rotate(180deg);
}

.tech-spec-content {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

html[data-theme="steel"] .tech-spec-content {
  color: #334155;
}

.tech-spec-content ul {
  padding-left: 20px;
  list-style-type: square;
}

.tech-spec-content li {
  margin-bottom: 8px;
}

.project-screenshots {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-card) transparent;
}

.project-screenshots::-webkit-scrollbar {
  height: 4px;
}

.project-screenshots::-webkit-scrollbar-thumb {
  background: var(--border-card);
  border-radius: var(--radius-full);
}

.screenshot-link {
  flex-shrink: 0;
  width: 105px;
  aspect-ratio: 1.33;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-subtle);
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
  background: #000000;
}

html[data-theme="steel"] .screenshot-link {
  border-color: rgba(15, 23, 42, 0.15);
}

.screenshot-link:hover {
  transform: translateY(-2px) scale(1.04);
  border-color: var(--accent-cyan);
  box-shadow: 0 4px 12px rgba(0, 240, 255, 0.15);
}

html[data-theme="steel"] .screenshot-link:hover {
  border-color: #070a10;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.screenshot-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-fast);
}

.screenshot-link:hover img {
  opacity: 0.9;
}

.about-portrait {
  float: left;
  width: 145px;
  aspect-ratio: 0.8;
  border-radius: var(--radius-md);
  border: 2px solid rgba(203, 213, 225, 0.25);
  margin-right: 24px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-steel-plate);
  object-fit: cover;
  background: #0a0e17;
}

html[data-theme="steel"] .about-portrait {
  border-color: rgba(15, 23, 42, 0.18);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

@media (max-width: 576px) {
  .about-portrait {
    float: none;
    display: block;
    margin: 0 auto 24px auto;
    width: 165px;
  }

  .btn-slush-header {
    display: none !important;
  }

  .btn-cv-header {
    margin-right: 0 !important;
    padding: 6px 12px !important;
    font-size: 0.78rem !important;
  }

  .brand-nav-logo {
    height: 34px !important; /* Sleek, compact logo scaling for narrow mobile viewports */
  }

  .container {
    padding-inline: 16px !important; /* Save horizontal padding space on mobile */
  }

  .nav-container {
    gap: 12px !important; /* Narrower flex spacing between logo and actions */
  }

  .header-actions {
    gap: 12px !important; /* Narrower gap between CV button and hamburger icon */
  }

  .site-nav {
    right: 16px !important; /* Tighter floating layout matching 16px edge padding on mobile */
    top: calc(var(--header-height) + 8px) !important;
    width: 240px !important; /* Compact width for tiny mobile screens */
  }

  .services-grid,
  .pedigree-grid,
  .projects-grid,
  .engagement-grid {
    grid-template-columns: 1fr !important;
    border-left: none !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
  }

  .section-header {
    border-left: none !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
  }

  html[data-theme="steel"] .section-header {
    border-left: none !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
  }

  .section-header.is-stuck,
  html[data-theme="steel"] .section-header.is-stuck {
    margin-left: -16px !important;
    margin-right: -16px !important;
    width: calc(100% + 32px) !important;
    padding-left: 16px !important;
    padding-right: 16px !important;
    border-radius: 0 !important; /* Flush edge-to-edge on mobile */
  }
}

/* ==========================================================================
   Speculative Experiments: Laser-Etched Textures & Milled Contours
   ========================================================================== */

/* Experiment 2: 3D "Laser-Etched" Recessed Typography (Static & Mobile-Compatible) */
.section-title,
.brand-title,
.project-title,
.service-card h3,
.pedigree-title {
  text-shadow: -1px -1px 0px rgba(0, 0, 0, 0.85), 1px 1px 0px rgba(255, 255, 255, 0.06);
}