/* ==========================================================================
   DANISH LARAIB // AI SYSTEMS ENGINEER
   Design System: Swiss Modernist / High-Precision Architectural Editorial
   Standards: Emil Kowalski UI Engineering + Strict Negative Constraint Compliance
   Modes: Default Light Mode (Warm Architectural Linen) + Dark Mode Toggle
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tokens & Color Variables
   Strictly Zero Harsh Gradients, Zero Drop Shadows, Zero Purple/Black, Zero Neon
   -------------------------------------------------------------------------- */

/* ============================================================
   LIGHT MODE  //  Crisp Signal White + Electric Magenta
   Inspired by Deutsche Telekom boldness, Mistral energy.
   ============================================================ */
:root,
html[data-theme="light"] {
  --theme-mode: "light";

  /* Backgrounds: crisp signal white, not warm stone */
  --bg:            #f5f5f8;
  --bg-subtle:     #ebebf0;
  --surface:       #ededf2;
  --surface-card:  #fafafc;
  --surface-hover: #e2e2ea;
  --surface-active:#d5d5e0;

  /* Borders */
  --border:        #c8c8d8;
  --border-muted:  #dcdce8;
  --border-accent: #e5007d;   /* magenta hairline */
  --border-focus:  #b5005f;

  /* Typography */
  --text-primary:   #0c0c14;
  --text-secondary: #3a3a52;
  --text-muted:     #6b6b8a;
  --text-inverse:   #ffffff;

  /* PRIMARY ACCENT: Deutsche Telekom electric magenta */
  --accent:         #e5007d;
  --accent-muted:   #fce7f3;
  --accent-hover:   #c40069;

  /* SECONDARY ACCENT: Mistral-energy vivid orange */
  --accent2:        #f97316;
  --accent2-muted:  #fff3e8;

  /* Knowledge Graph Node Colors (max saturation) */
  --kg-node-agent:  #7c3aed;   /* vivid purple  - agents  */
  --kg-node-graph:  #0ea5e9;   /* sky blue      - graph   */
  --kg-node-model:  #f97316;   /* hot orange    - models  */
  --kg-node-infra:  #10b981;   /* vivid emerald - infra   */
  --kg-edge:        rgba(124, 58, 237, 0.15);
  --kg-edge-active: rgba(229,   0, 125, 0.60);

  /* Cursor */
  --cursor-dot:        #0c0c14;
  --cursor-ring:       rgba(229, 0, 125, 0.60);
  --cursor-hover-ring: rgba(124, 58, 237, 0.80);

  /* Status */
  --status-active:    #059669;
  --status-active-bg: #d1fae5;

  /* Modal */
  --overlay-bg: rgba(12, 12, 20, 0.78);
}

/* ============================================================
   DARK MODE  //  Deep Navy-Black + Neon Magenta
   ============================================================ */
html[data-theme="dark"] {
  --theme-mode: "dark";

  --bg:            #07070f;
  --bg-subtle:     #0f0f1c;
  --surface:       #121220;
  --surface-card:  #161627;
  --surface-hover: #1e1e32;
  --surface-active:#28283e;

  --border:        #2a2a42;
  --border-muted:  #1e1e30;
  --border-accent: #ff1f8e;
  --border-focus:  #ff4da6;

  --text-primary:   #f0f0fa;
  --text-secondary: #a0a0c0;
  --text-muted:     #60607a;
  --text-inverse:   #07070f;

  /* PRIMARY: neon magenta on dark bg */
  --accent:         #ff1f8e;
  --accent-muted:   #2a001a;
  --accent-hover:   #ff4da6;

  --accent2:        #fb923c;
  --accent2-muted:  #1f1008;

  /* Knowledge Graph Node Colors (neon on dark) */
  --kg-node-agent:  #a78bfa;   /* violet        */
  --kg-node-graph:  #38bdf8;   /* sky blue      */
  --kg-node-model:  #fb923c;   /* flame orange  */
  --kg-node-infra:  #34d399;   /* neon emerald  */
  --kg-edge:        rgba(167, 139, 250, 0.15);
  --kg-edge-active: rgba(255,  31, 142, 0.55);

  /* Cursor */
  --cursor-dot:        #f0f0fa;
  --cursor-ring:       rgba(255, 31, 142, 0.65);
  --cursor-hover-ring: rgba(167, 139, 250, 0.85);

  --status-active:    #34d399;
  --status-active-bg: #022c1e;

  --overlay-bg: rgba(7, 7, 15, 0.90);
}


/* Common Variables */
:root {
  /* Typography Hierarchy (Strictly avoiding Inter, Geist, Space Grotesk) */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Newsreader', Georgia, Cambria, serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Sharp Architectural Corners (Strictly 0px to 2px, no pill shapes) */
  --radius-none: 0px;
  --radius-sm: 2px;
  --radius: 2px;
  
  /* Emil Kowalski Animation Easing Curves */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --duration-fast: 140ms;
  --duration-normal: 200ms;
  
  /* Layout Constraints */
  --max-width: 1220px;
  --nav-height: 64px;
}

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  /* Zero Drop Shadows across entire document */
  box-shadow: none !important;
  text-shadow: none !important;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

body {
  min-height: 100vh;
  /* background is transparent so the fixed canvas behind shows through in hero */
  background-color: transparent;
  color: var(--text-primary);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
  transition: color var(--duration-fast) var(--ease-out);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection {
  background-color: var(--accent);
  color: var(--text-inverse);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.25;
}

p {
  color: var(--text-secondary);
}

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

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-muted);
  /* Opaque bg covers the canvas for all sections below the hero */
  position: relative;
  z-index: 2;
  background-color: var(--bg);
}

/* --------------------------------------------------------------------------
   Navigation Bar (Crisp, Solid, Opaque, Zero Frosted Glass)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  border-radius: var(--radius-sm);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* Screen reader utility for accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Theme Toggle Button (Compact, Elegant Icon Switcher) */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  background-color: var(--surface-hover);
  border-color: var(--accent);
}

.theme-toggle-btn:active {
  transform: scale(0.94);
}

/* Light / Dark Mode Icon Switching */
.theme-icon {
  display: inline-block;
  pointer-events: none;
}

html[data-theme="light"] .theme-icon-sun {
  display: none;
}
html[data-theme="light"] .theme-icon-moon {
  display: block;
  color: var(--text-primary);
}

html[data-theme="dark"] .theme-icon-moon {
  display: none;
}
html[data-theme="dark"] .theme-icon-sun {
  display: block;
  color: var(--accent);
}

/* Mobile Navigation Hamburger Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 36px;
  height: 36px;
  padding: 8px 7px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

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

.hamburger-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s var(--ease-out);
}

.mobile-nav-toggle.active .hamburger-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.mobile-nav-toggle.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.active .hamburger-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Navigation Drawer & Backdrop */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--overlay-bg);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(340px, 86vw);
  height: 100vh;
  background-color: var(--bg);
  border-left: 1px solid var(--border);
  z-index: 160;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.12);
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.25rem;
  border-bottom: 1px solid var(--border-muted);
}

.mobile-brand-tag {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.mobile-nav-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mobile-nav-close {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.4rem;
  line-height: 1;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.mobile-nav-close:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.mobile-nav-content {
  padding: 1.25rem;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: border-color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.mobile-nav-link:hover,
.mobile-nav-link:active {
  border-color: var(--accent);
  background-color: var(--accent-muted);
  color: var(--accent);
}

.m-idx {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
}

.m-label {
  font-family: var(--font-sans);
}

.mobile-nav-footer {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-muted);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.mobile-drawer-resume-btn {
  width: 100%;
  justify-content: center;
}

.mobile-nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.725rem;
  color: var(--text-muted);
  padding: 0.35rem 0.2rem;
}

/* --------------------------------------------------------------------------
   Buttons (Emil Kowalski tactile press: transform scale 0.97, sharp radius)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.15rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  background: none;
  transition: transform var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background-color: var(--accent);
  color: #f5f4ef;
  border-color: var(--accent);
}

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

.btn-secondary {
  background-color: var(--surface);
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: var(--border-accent);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

/* --------------------------------------------------------------------------
   Hero Section: Editorial, Authoritative, Telemetry Grid
   -------------------------------------------------------------------------- */
.hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--border);
  /* Transparent so the fixed canvas is visible behind the hero */
  background-color: transparent;
  position: relative;
  z-index: 2;
}

.hero-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-muted);
}

.system-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}

.status-beacon {
  width: 8px;
  height: 8px;
  /* Magenta pulsing beacon for strong brand identity */
  background-color: var(--accent);
  border-radius: 50%;
  animation: beaconPulse 2s ease-in-out infinite;
}

@keyframes beaconPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

.hero-coordinates {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.2vw, 3.8rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  max-width: 1050px;
}

.hero-subhead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 860px;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

/* Production Telemetry Row (4-column grid, strictly NOT 3 cards in a row) */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--border);
  border: 1px solid var(--border);
}

.telemetry-cell {
  background-color: var(--surface-card);
  padding: 1.5rem 1.25rem;
  /* Magenta top line on each metric cell */
  border-top: 2px solid var(--accent);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.telemetry-cell:hover {
  background-color: var(--surface-hover);
}

.telemetry-value {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 600;
  /* Electric magenta makes the numbers POP */
  color: var(--accent);
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.telemetry-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Section Headers (Swiss Typographic Hierarchy)
   -------------------------------------------------------------------------- */
.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 600;
}

.section-description {
  max-width: 650px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Core Engineering Capabilities (4 Systems Pillars, 2x2 Grid)
   -------------------------------------------------------------------------- */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.capability-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.capability-card:hover {
  border-color: var(--accent);
  background-color: var(--accent-muted);
}

.capability-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-muted);
}

.capability-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

.capability-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.capability-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.capability-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.capability-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.capability-feature-item {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.capability-feature-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 5px;
  height: 1px;
  background-color: var(--accent);
}

.capability-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-muted);
}



/* --------------------------------------------------------------------------
   Anonymous Production Systems (NDA-Compliant Architecture Case Studies)
   -------------------------------------------------------------------------- */
.systems-stack {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.system-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2.25rem;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.system-card:hover {
  border-color: var(--border-accent);
}

.system-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-muted);
}

.system-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.system-card-title {
  font-size: 1.4rem;
  font-weight: 600;
}

.system-org {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--text-muted);
}

.system-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}

.system-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.system-block-title {
  font-size: 0.775rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.system-block-text {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.system-telemetry-box {
  background-color: var(--bg);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.metrics-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-muted);
}

.metric-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.metric-k {
  font-size: 0.825rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.metric-v {
  font-size: 0.925rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 600;
}

.tech-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
  cursor: default;
}

.tech-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background-color: var(--accent-muted);
}

/* --------------------------------------------------------------------------
   Architecture Pipeline Dataflow Visualizer (Step-by-Step Execution)
   -------------------------------------------------------------------------- */
.dataflow-steps {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-muted);
}

.dataflow-step {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.825rem;
  line-height: 1.5;
}

.dataflow-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  min-width: 1.5rem;
}

.dataflow-text {
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Real-Time GitHub Telemetry Ribbon & Badges
   -------------------------------------------------------------------------- */
.github-telemetry-banner {
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.telemetry-meta-left {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

.telemetry-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.775rem;
  color: var(--text-primary);
  font-weight: 500;
}

.telemetry-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--status-active);
}

.telemetry-stat-item {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.telemetry-stat-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

.telemetry-meta-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.telemetry-sync-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.telemetry-refresh-btn {
  padding: 0.35rem 0.65rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

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

.telemetry-refresh-btn.rotating svg {
  animation: spin 700ms linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.repo-telemetry-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.repo-metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-secondary);
}

.repo-metric-pill svg {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   Repository Index (Personal Public GitHub Repos)
   -------------------------------------------------------------------------- */
.repo-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.4rem 0.85rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.775rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

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

.filter-btn.active {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 700;
}

.repo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}

.repo-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  min-height: 290px;
  box-sizing: border-box;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.repo-card:hover {
  border-color: var(--accent);
  border-left: 3px solid var(--accent);
}

.repo-top {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  margin-bottom: 1.25rem;
}

.repo-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.repo-header > div:first-child {
  flex: 1;
  min-width: 0;
}

.repo-title {
  font-size: 1.05rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  word-break: break-word;
  overflow-wrap: anywhere;
  margin-bottom: 0.35rem;
}

.repo-lang {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: right;
  flex-shrink: 0;
  max-width: 45%;
  line-height: 1.3;
}

.repo-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 5.6rem;
}

.repo-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  margin-top: auto;
  border-top: 1px solid var(--border-muted);
  gap: 0.75rem;
}

.repo-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.repo-link:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Skills Matrix (Tabular Rigor, No Progress Bars, No Soft Cards)
   -------------------------------------------------------------------------- */
.skills-table-wrap {
  border: 1px solid var(--border);
  background-color: var(--surface-card);
}

.skills-matrix-row {
  display: grid;
  grid-template-columns: 260px 1fr;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-muted);
}

.skills-matrix-row:last-child {
  border-bottom: none;
}

.skills-domain {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.skills-list-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Contact Section & Direct Communication
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.direct-channels {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.channel-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.channel-card:hover {
  border-color: var(--border-accent);
}

.channel-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.channel-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
}

.contact-form {
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.form-input:focus {
  border-color: var(--accent);
}

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

/* --------------------------------------------------------------------------
   Footer & Governance (TOS & Privacy Modals Compliance)
   -------------------------------------------------------------------------- */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  background-color: var(--bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.legal-btn {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-out);
}

.legal-btn:hover {
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Modals (Accessible, Emil Kowalski scale 0.96 -> 1, Opaque, No Frosted Glass)
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--overlay-bg);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  background-color: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96);
  transition: transform var(--duration-normal) var(--ease-out);
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-subtle);
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.modal-close:hover {
  color: var(--text-primary);
  border-color: var(--border-accent);
}

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.modal-body h4 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   Notification Banner (Micro-feedback toast)
   -------------------------------------------------------------------------- */
.site-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--surface-card);
  border: 1px solid var(--accent);
  color: var(--text-primary);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
  z-index: 300;
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-normal) var(--ease-out);
}

.site-toast.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* --------------------------------------------------------------------------
   Mobile & Responsive Architecture (Tablets, Android & iPhone Polish)
   -------------------------------------------------------------------------- */

/* Breakpoint 1: Tablets & Small Laptops (<= 992px) */
@media (max-width: 992px) {
  /* Header adjustments: Hide desktop nav, reveal hamburger toggle */
  .nav-desktop {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
  }

  /* Grid layout adaptations */
  .telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .capability-grid,
  .system-layout,
  .repo-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .skills-matrix-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

/* Breakpoint 2: Large Phones & Tablets (<= 768px) */
@media (max-width: 768px) {
  /* Fluid breathing room: avoid giant empty padding */
  .section {
    padding: 3.5rem 0;
  }
  .hero {
    padding: 3.25rem 0 2.5rem;
  }
  .container {
    padding: 0 1.25rem;
  }

  .section-header {
    margin-bottom: 2rem;
  }

  .section-title {
    font-size: clamp(1.65rem, 5vw, 2.25rem);
  }

  /* Hero typographic hierarchy */
  .hero-meta-bar {
    gap: 0.75rem;
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
  }

  .hero-headline {
    font-size: clamp(1.85rem, 6vw, 2.85rem);
    line-height: 1.2;
    word-break: break-word;
  }

  .hero-subhead {
    font-size: 1.05rem;
    line-height: 1.6;
    margin-bottom: 2rem;
  }

  /* Telemetry grid: 2x2 instrument panel with compact padding */
  .telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .telemetry-cell {
    padding: 1rem 0.85rem;
  }

  .telemetry-value {
    font-size: 1.4rem;
  }

  .telemetry-label {
    font-size: 0.72rem;
    line-height: 1.4;
  }

  /* Architecture & Case study cards */
  .system-card {
    padding: 1.5rem 1.25rem;
  }



  .capability-card {
    padding: 1.5rem 1.25rem;
  }

  .repo-card {
    padding: 1.25rem 1rem;
    min-height: auto;
  }

  .repo-desc {
    min-height: auto;
    -webkit-line-clamp: unset;
  }

  /* Repository controls & filter pills: native horizontal swipe on mobile */
  .repo-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .filter-bar {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    padding-bottom: 0.4rem;
    gap: 0.4rem;
    scrollbar-width: none;
  }

  .filter-bar::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
  }

  .telemetry-meta-right {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  /* Skills matrix row */
  .skills-matrix-row {
    padding: 1.25rem 1.25rem;
  }

  /* Contact section form */
  .contact-form {
    padding: 1.5rem 1.25rem;
  }

  /* Prevent iOS Safari 16px auto-zoom */
  .form-input {
    font-size: 16px;
  }
}

/* Breakpoint 3: Compact Phones (iPhone 12/13/14/15, iPhone SE, Android <= 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero {
    padding: 2.25rem 0 1.75rem;
  }

  .hero-headline {
    font-size: clamp(1.65rem, 7.5vw, 2.2rem);
  }

  .hero-subhead {
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 1.5rem;
  }

  /* Full-width tap-friendly hero action buttons */
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
  }

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

  /* Telemetry cell compact padding */
  .telemetry-cell {
    padding: 0.85rem 0.75rem;
  }

  .telemetry-value {
    font-size: 1.25rem;
  }

  .system-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .system-card-title {
    font-size: 1.15rem;
  }

  .system-card {
    padding: 1.25rem 1rem;
  }



  .capability-card {
    padding: 1.25rem 1rem;
  }

  .repo-card {
    padding: 1.25rem 1rem;
    min-height: auto;
  }

  .repo-desc {
    min-height: auto;
    -webkit-line-clamp: unset;
  }

  .repo-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .repo-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .repo-footer .btn {
    width: 100%;
    justify-content: center;
  }

  .metric-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .spec-line {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }



  .skills-matrix-row {
    padding: 1rem 1rem;
  }

  .contact-form {
    padding: 1.25rem 1rem;
  }

  .contact-form .btn {
    width: 100%;
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .footer-legal-links {
    flex-wrap: wrap;
    gap: 0.85rem;
  }

  .modal-container {
    padding: 1.25rem 1rem;
    margin: 0.5rem;
    max-height: 92vh;
  }

  /* Nav actions on narrowest mobile */
  .nav-resume-text {
    display: none;
  }
  .nav-resume-btn {
    padding: 0.45rem;
  }
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   KNOWLEDGE GRAPH CANVAS LAYER
   Full-bleed animated canvas behind the hero section.
   Zero drop-shadow. Transparent. Pointer-events: none so clicks pass through.
   ========================================================================== */

.kg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  /* z-index 1: above the html background paint, below z-index 2 sections/hero */
  z-index: 1;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.4s ease;
}

/* Node label pills rendered as HTML overlays on canvas */
.kg-node-label {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  pointer-events: none;
  white-space: nowrap;
  opacity: 0.72;
  transform: translate(-50%, -50%);
}

/* ==========================================================================
   CUSTOM CURSOR
   Mistral-style: small filled dot (instant) + larger ring (lagging/magnetic).
   Hides the native OS cursor on desktop only.
   ========================================================================== */

/* Hide native cursor globally when custom cursor is active */
html.custom-cursor-active,
html.custom-cursor-active * {
  cursor: none !important;
}

/* Dot: small, instant, always snapped to pointer */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cursor-dot);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: background-color 0.2s, width 0.15s var(--ease-out), height 0.15s var(--ease-out), opacity 0.3s;
  will-change: transform;
}

/* Ring: larger, follows with spring lag (animated via JS) */
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--cursor-ring);
  background: transparent;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.25s var(--ease-out),
              height 0.25s var(--ease-out),
              border-color 0.25s var(--ease-out),
              opacity 0.3s;
  will-change: transform;
}

/* Hover state: ring expands and changes color */
html.custom-cursor-active body.cursor-hovered .cursor-ring {
  width: 52px;
  height: 52px;
  border-color: var(--cursor-hover-ring);
}

/* Hover state: dot shrinks slightly */
html.custom-cursor-active body.cursor-hovered .cursor-dot {
  width: 4px;
  height: 4px;
}

/* Click state: ring snaps tight momentarily */
html.custom-cursor-active body.cursor-clicking .cursor-ring {
  width: 22px;
  height: 22px;
  border-color: var(--accent);
}

/* On touch devices: hide cursor elements and restore native cursor, keep canvas visible subtly */
@media (hover: none) and (pointer: coarse) {
  html.custom-cursor-active,
  html.custom-cursor-active * {
    cursor: auto !important;
  }
  .cursor-dot,
  .cursor-ring {
    display: none !important;
  }
  .kg-canvas {
    opacity: 0.65;
  }
}

/* ==========================================================================
   KNOWLEDGE GRAPH SECTION ACCENT HIGHLIGHTS
   Subtle left-border colorization on capability pillars using KG palette.
   Strictly NOT colored left stripe (design constraint) -- these are top-line
   accent separators within content blocks, not full-height stripes.
   ========================================================================== */

/* Capability labels pick up the KG node color palette */
.capability-label[data-domain="agent"]  { color: var(--kg-node-agent); }
.capability-label[data-domain="graph"]  { color: var(--kg-node-graph); }
.capability-label[data-domain="model"]  { color: var(--kg-node-model); }
.capability-label[data-domain="infra"]  { color: var(--kg-node-infra); }

/* Tech tags get subtle domain-keyed underline on hover */
.tech-tag[data-domain="agent"]:hover  { border-color: var(--kg-node-agent); color: var(--kg-node-agent); }
.tech-tag[data-domain="graph"]:hover  { border-color: var(--kg-node-graph); color: var(--kg-node-graph); }
.tech-tag[data-domain="model"]:hover  { border-color: var(--kg-node-model); color: var(--kg-node-model); }
.tech-tag[data-domain="infra"]:hover  { border-color: var(--kg-node-infra); color: var(--kg-node-infra); }

/* Active filter buttons use KG accent colors */
.filter-btn.active[data-filter="agentic"]  { background-color: var(--kg-node-agent); color: #fff; border-color: var(--kg-node-agent); }
.filter-btn.active[data-filter="graph"]    { background-color: var(--kg-node-graph); color: #fff; border-color: var(--kg-node-graph); }
.filter-btn.active[data-filter="fine-tune"]{ background-color: var(--kg-node-model); color: #fff; border-color: var(--kg-node-model); }
.filter-btn.active[data-filter="safety"]   { background-color: var(--kg-node-infra); color: #fff; border-color: var(--kg-node-infra); }