/* ==========================================================================
   XPONA // SACHIN PATEL — SYSTEMS ARCHITECTURE & DEEP-TECH PORTFOLIO
   Aesthetics: Obsidian Void, Bioluminescent Glassmorphism, Monospace Telemetry HUD
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS & VARIABLES
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --bg-deep: #07080c;
  --bg-surface: rgba(14, 17, 27, 0.7);
  --bg-surface-hover: rgba(22, 27, 43, 0.85);
  --bg-card: rgba(18, 22, 34, 0.55);
  
  /* Accents */
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-violet: #8a2be2;
  --accent-purple: #7928ca;
  --accent-emerald: #10b981;
  --accent-pink: #ff007a;
  
  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dark: #07080c;

  /* Glassmorphism & Borders */
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(0, 242, 254, 0.35);
  --border-subtle: rgba(255, 255, 255, 0.05);
  --glass-blur: blur(20px);
  --glass-shadow: 0 20px 50px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --glow-cyan: 0 0 30px rgba(0, 242, 254, 0.35);
  --glow-violet: 0 0 30px rgba(138, 43, 226, 0.35);

  /* Fonts */
  --font-display: 'Syne', sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
  background-color: var(--bg-deep);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* --------------------------------------------------------------------------
   3. BACKGROUND & AMBIENT GRAPHICS
   -------------------------------------------------------------------------- */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  z-index: 1;
  pointer-events: none;
  opacity: 0.4;
  animation: orbFloat 22s ease-in-out infinite alternate;
}

.glow-orb-1 {
  top: -10%;
  left: 15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.22) 0%, rgba(138, 43, 226, 0.1) 70%);
}

.glow-orb-2 {
  bottom: 15%;
  right: -5%;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(121, 40, 202, 0.22) 0%, rgba(0, 242, 254, 0.05) 70%);
  animation-delay: -8s;
}

.glow-orb-3 {
  top: 45%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.14) 0%, rgba(0, 0, 0, 0) 70%);
  animation-delay: -15s;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -60px) scale(1.08); }
  100% { transform: translate(-30px, 40px) scale(0.95); }
}

.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* --------------------------------------------------------------------------
   4. GLASSMORPHISM CORE
   -------------------------------------------------------------------------- */
.glass-panel {
  background: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-glass);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), transform var(--transition-smooth), box-shadow var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
  transition: left 0.85s ease;
  pointer-events: none;
}

.glass-panel:hover::before {
  left: 100%;
}

.glass-panel:hover {
  border-color: var(--border-glass-hover);
  box-shadow: var(--glass-shadow), 0 0 35px rgba(0, 242, 254, 0.15);
}

.tilt-element {
  transform-style: preserve-3d;
  will-change: transform;
}

/* --------------------------------------------------------------------------
   5. NAVIGATION
   -------------------------------------------------------------------------- */
.app-container {
  position: relative;
  z-index: 10;
  max-width: 1240px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 0.75rem 1.25rem;
  background: rgba(10, 13, 22, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  position: sticky;
  top: 1rem;
  z-index: 100;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.brand-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
  box-shadow: 0 0 14px rgba(0, 242, 254, 0.4);
}

.brand-text {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

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

.brand-divider {
  color: var(--accent-cyan);
}

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

.nav-links-desktop {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 1.15rem;
  border-radius: var(--radius-full);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--accent-cyan);
  text-shadow: 0 0 8px rgba(0, 242, 254, 0.4);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-emerald);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.25);
}

/* --------------------------------------------------------------------------
   6. HERO SECTION: TECH & ARCHITECTURE FIRST
   -------------------------------------------------------------------------- */
.hero-card {
  padding: 3.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.card-header-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
}

.badge-code {
  color: var(--accent-cyan);
  letter-spacing: 0.08em;
}

.badge-time {
  background: rgba(0, 0, 0, 0.35);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.hero-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.85rem;
}

.hero-lead-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.lead-role-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--accent-cyan);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
}

.lead-id-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  max-width: 960px;
}

.gradient-cyan,
.gradient-violet,
.gradient-emerald,
.animated-gradient-text {
  background: linear-gradient(
    115deg,
    #ffffff 0%,
    #00f2fe 18%,
    #4facfe 35%,
    #b35df7 52%,
    #ff007a 70%,
    #00f5a0 88%,
    #00f2fe 100%
  );
  background-size: 320% 320%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  will-change: background-position, filter;
}

.gradient-cyan {
  animation: fluidGradientShift 8s ease-in-out infinite alternate;
}

.gradient-violet {
  animation: fluidGradientShift 9.5s ease-in-out infinite alternate-reverse;
  animation-delay: -2.5s;
}

.gradient-emerald {
  animation: fluidGradientShift 7.5s ease-in-out infinite alternate;
  animation-delay: -5s;
}

@keyframes fluidGradientShift {
  0% {
    background-position: 0% 50%;
    filter: drop-shadow(0 0 16px rgba(0, 242, 254, 0.35));
  }
  50% {
    background-position: 100% 50%;
    filter: drop-shadow(0 0 22px rgba(179, 93, 247, 0.4));
  }
  100% {
    background-position: 0% 50%;
    filter: drop-shadow(0 0 18px rgba(0, 245, 160, 0.35));
  }
}

.hero-description {
  max-width: 780px;
  font-size: 1.12rem;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.75;
}

/* Hero Telemetry Matrix */
.hero-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  width: 100%;
  margin: 0.5rem 0;
}

.hero-telemetry-pill {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  text-align: left;
  transition: all var(--transition-fast);
}

.hero-telemetry-pill:hover {
  border-color: rgba(0, 242, 254, 0.3);
  background: rgba(0, 242, 254, 0.04);
}

.pill-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
}

.pill-val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   7. BUTTON SYSTEM
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: 1px solid transparent;
  text-decoration: none;
  user-select: none;
}

.btn .icon {
  transition: transform var(--transition-fast);
}

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

.btn:active, .nav-btn:active, .inline-copy-btn:active, .domain-card:active {
  transform: scale(0.97) !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: var(--text-dark);
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.35);
  font-weight: 700;
}

.btn-primary:hover {
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.6);
  transform: translateY(-2px);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-glass);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-outline:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

.btn-icon-only {
  padding: 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border-color: var(--border-glass);
  border-radius: var(--radius-md);
}

.btn-icon-only:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.08);
  transform: translateY(-2px);
}

.card-footer-info {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.info-pill {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.info-pill .label {
  color: var(--text-muted);
}

.info-pill .val {
  color: var(--text-secondary);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   8. CORE TECHNICAL DOMAINS & ARCHITECTURE
   -------------------------------------------------------------------------- */
.matrix-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.section-title-wrap {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 0.5rem;
}

.title-left {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.section-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-glass), transparent);
  margin-bottom: 0.6rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.domain-card {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.domain-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.domain-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.cyan-border {
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--accent-cyan);
}
.violet-border {
  border: 1px solid rgba(138, 43, 226, 0.25);
  color: #c084fc;
}
.emerald-border {
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}
.pink-border {
  border: 1px solid rgba(255, 0, 122, 0.25);
  color: var(--accent-pink);
}

.domain-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.domain-title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
}

.domain-subheading {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  letter-spacing: 0.02em;
  margin-top: -0.5rem;
}

.domain-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.capability-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.25rem 0;
}

.capability-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.5;
}

.capability-list li::before {
  content: '▸';
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.tech-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.domain-card:hover .tech-tags span {
  border-color: rgba(0, 242, 254, 0.2);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   9. TECH STACK MATRIX SECTION
   -------------------------------------------------------------------------- */
.stack-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stack-container {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.stack-filter-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.25rem;
}

.stack-tab {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.stack-tab:hover {
  color: var(--text-primary);
  border-color: rgba(0, 242, 254, 0.3);
}

.stack-tab.active {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 600;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.stack-item {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: all var(--transition-fast);
}

.stack-item:hover {
  border-color: rgba(0, 242, 254, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.item-name {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.item-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.item-badge.cyan {
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--accent-cyan);
}

.item-badge.violet {
  background: rgba(138, 43, 226, 0.1);
  border: 1px solid rgba(138, 43, 226, 0.25);
  color: #c084fc;
}

.item-badge.emerald {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}

.item-badge.pink {
  background: rgba(255, 0, 122, 0.1);
  border: 1px solid rgba(255, 0, 122, 0.25);
  color: var(--accent-pink);
}

.item-detail {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   10. TELEMETRY & DIAGNOSTICS
   -------------------------------------------------------------------------- */
.telemetry-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.telemetry-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 1.25rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border-radius: var(--radius-md);
}

.telemetry-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.telemetry-label {
  color: var(--text-muted);
}

.telemetry-val {
  color: var(--text-primary);
  font-weight: 500;
}

.green-glow {
  color: var(--accent-emerald);
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
}

.cyan-glow {
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(0, 242, 254, 0.6);
}

/* --------------------------------------------------------------------------
   11. CONTACT & HOLDING DECK
   -------------------------------------------------------------------------- */
.contact-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card {
  padding: 3rem;
}

.contact-card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.contact-header-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.avatar-ring-wrapper {
  position: relative;
  width: 84px;
  height: 84px;
}

.avatar-ring {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  padding: 3px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.3);
  animation: rotateRing 15s linear infinite;
}

.avatar-inner {
  width: 100%;
  height: 100%;
  background: var(--bg-deep);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-monogram {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.avatar-orbit-dot {
  position: absolute;
  top: -4px;
  left: 50%;
  width: 10px;
  height: 10px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

@keyframes rotateRing {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.contact-titles {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
}

.contact-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
}

.contact-name {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.contact-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
}

.contact-email-bar {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  background: rgba(0, 242, 254, 0.05);
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.1);
  transition: all var(--transition-fast);
}

.contact-email-bar:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 40px rgba(0, 242, 254, 0.25);
  background: rgba(0, 242, 254, 0.08);
}

.contact-email-val {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  user-select: all;
}

.inline-copy-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.inline-copy-btn:hover {
  color: var(--accent-cyan);
  transform: scale(1.15);
}

.contact-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   12. FOOTER
   -------------------------------------------------------------------------- */
.main-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-btn {
  background: transparent;
  border: none;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
}

.footer-btn:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   13. MODALS
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 5, 8, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 1;
  transition: opacity var(--transition-smooth);
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  width: 100%;
  max-width: 540px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transform: scale(1);
  transition: transform var(--transition-bounce);
}

.modal-overlay.hidden .modal-card {
  transform: scale(0.92);
}

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

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.modal-title-wrap h3 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--accent-cyan);
}

.modal-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.form-input {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  outline: none;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.25);
  background: rgba(0, 242, 254, 0.03);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.transmission-bar {
  margin-top: 0.75rem;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  height: 28px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bar-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  transition: width 0.1s linear;
}

.bar-text {
  position: relative;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #fff;
  letter-spacing: 0.1em;
  text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

.modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1rem;
}

.qr-modal-card {
  max-width: 400px;
}

.qr-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.25rem;
}

.qr-code-frame {
  padding: 1.25rem;
  background: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

#qr-canvas {
  width: 180px;
  height: 180px;
  display: block;
}

.qr-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.qr-email {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.qr-hint {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   14. CLI TERMINAL
   -------------------------------------------------------------------------- */
.terminal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.terminal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.terminal-window {
  width: 100%;
  max-width: 820px;
  height: 540px;
  display: flex;
  flex-direction: column;
  border-color: rgba(0, 242, 254, 0.25);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.85), 0 0 45px rgba(0, 242, 254, 0.18);
}

.terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: rgba(0, 0, 0, 0.55);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dots {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  cursor: pointer;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

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

.terminal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
}

.terminal-body {
  flex: 1;
  padding: 1.25rem;
  background: rgba(5, 7, 12, 0.96);
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--text-primary);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.term-ascii {
  font-size: 0.65rem;
  line-height: 1.1;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
  user-select: none;
}

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

.term-hint {
  color: var(--text-muted);
}

.term-highlight {
  color: var(--accent-cyan);
  font-weight: 700;
}

.term-divider {
  color: rgba(255, 255, 255, 0.1);
  margin: 0.25rem 0;
}

.term-output {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.term-line {
  line-height: 1.55;
  word-break: break-word;
}

.term-cmd-history {
  color: var(--accent-cyan);
}

.term-quick-chips {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.4rem 0;
  border-top: 1px dashed var(--border-subtle);
  -webkit-overflow-scrolling: touch;
}

.term-quick-chips::-webkit-scrollbar {
  display: none;
}

.chips-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.term-chip {
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.term-chip:hover, .term-chip:active {
  background: var(--accent-cyan);
  color: var(--text-dark);
}

.term-input-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.term-prompt {
  color: var(--accent-emerald);
  white-space: nowrap;
  font-weight: 700;
}

#term-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   15. TOAST NOTIFICATIONS
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  background: rgba(14, 17, 27, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 18px rgba(0, 242, 254, 0.35);
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideToast 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-icon {
  color: var(--accent-cyan);
}

@keyframes slideToast {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   16. RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .nav-links-desktop {
    display: none;
  }
  .hero-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .hero-card {
    padding: 2.5rem 1.75rem;
  }

  .hero-headline {
    font-size: 2.45rem;
  }

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

@media (max-width: 640px) {
  .app-container {
    padding: 0.75rem;
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    gap: 1.75rem;
  }

  /* Top Navigation */
  .top-nav {
    padding: 0.75rem 0.85rem;
    border-radius: var(--radius-md);
    margin: 0;
    top: 0.5rem;
  }

  .brand-logo-mark {
    width: 32px;
    height: 32px;
    font-size: 0.95rem;
  }

  .brand-text {
    font-size: 0.78rem;
  }

  .status-badge {
    padding: 0.35rem 0.6rem;
  }

  .status-badge .status-text {
    display: none;
  }

  .nav-controls {
    gap: 0.4rem;
  }

  .nav-btn {
    padding: 0.4rem 0.65rem;
  }

  .nav-btn .btn-label {
    font-size: 0.7rem;
  }

  /* Hero Section */
  .hero-card {
    padding: 1.75rem 1.15rem;
    gap: 1.35rem;
    border-radius: var(--radius-md);
  }

  .card-header-badge {
    font-size: 0.68rem;
    padding-bottom: 0.75rem;
  }

  .hero-lead-meta {
    gap: 0.4rem;
  }

  .lead-role-pill, .lead-id-pill {
    font-size: 0.68rem;
    padding: 0.25rem 0.65rem;
  }

  .hero-headline {
    font-size: clamp(1.65rem, 6.8vw, 2.35rem);
    line-height: 1.22;
  }

  .br-desktop {
    display: none;
  }

  .hero-description {
    font-size: 0.94rem;
    line-height: 1.65;
  }

  /* 2x2 Telemetry Metric Grid on Mobile */
  .hero-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.65rem;
  }

  .hero-telemetry-pill {
    padding: 0.65rem 0.75rem;
    border-radius: var(--radius-sm);
  }

  .pill-label {
    font-size: 0.6rem;
  }

  .pill-val {
    font-size: 0.72rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.65rem;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 48px;
    font-size: 0.92rem;
  }

  .card-footer-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding-top: 1rem;
  }

  .info-pill {
    font-size: 0.68rem;
  }

  /* Core Domains */
  .matrix-section {
    gap: 1.25rem;
  }

  .section-title {
    font-size: 1.35rem;
  }

  .section-badge {
    font-size: 0.68rem;
  }

  .domain-card {
    padding: 1.4rem 1.15rem;
    gap: 0.85rem;
    border-radius: var(--radius-md);
  }

  .domain-title {
    font-size: 1.22rem;
  }

  .domain-subheading {
    font-size: 0.75rem;
  }

  .domain-desc {
    font-size: 0.88rem;
    line-height: 1.6;
  }

  .capability-list li {
    font-size: 0.82rem;
    line-height: 1.45;
  }

  .tech-tags span {
    font-size: 0.68rem;
    padding: 0.2rem 0.5rem;
  }

  /* Stack Matrix Filter Bar */
  .stack-container {
    padding: 1.25rem 1rem;
    border-radius: var(--radius-md);
  }

  .stack-filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.75rem;
    gap: 0.4rem;
  }

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

  .stack-tab {
    flex-shrink: 0;
    font-size: 0.72rem;
    padding: 0.35rem 0.75rem;
  }

  .stack-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .stack-item {
    padding: 1rem;
  }

  .item-name {
    font-size: 0.85rem;
  }

  .item-detail {
    font-size: 0.8rem;
  }

  /* Telemetry Bar */
  .telemetry-section {
    gap: 1rem;
  }

  .telemetry-bar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--radius-md);
  }

  .telemetry-item {
    font-size: 0.72rem;
  }

  /* Contact Section */
  .contact-card {
    padding: 2rem 1.15rem;
    border-radius: var(--radius-md);
  }

  .avatar-ring-wrapper {
    width: 72px;
    height: 72px;
  }

  .avatar-monogram {
    font-size: 1.75rem;
  }

  .contact-name {
    font-size: 1.65rem;
  }

  .contact-lead {
    font-size: 0.92rem;
    line-height: 1.55;
  }

  .contact-email-bar {
    width: 100%;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    box-sizing: border-box;
  }

  .contact-email-val {
    font-size: 1.18rem;
    word-break: break-all;
  }

  .contact-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.65rem;
  }

  .contact-actions .btn {
    width: 100%;
    min-height: 48px;
    font-size: 0.92rem;
  }

  /* Footer */
  .main-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.7rem;
  }

  .footer-right {
    flex-wrap: wrap;
    gap: 0.65rem;
  }

  /* Modals as Full/Bottom Sheets */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .modal-card {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    max-height: 90vh;
    overflow-y: auto;
    padding: 1.5rem 1.15rem;
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
  }

  .qr-modal-card {
    align-self: center;
    border-radius: var(--radius-lg);
    margin: 1rem;
  }

  /* Prevent iOS Auto-Zoom on Form Input Focus */
  .form-input, #term-input {
    font-size: 16px !important;
  }

  /* CLI Terminal Window on Mobile */
  .terminal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .terminal-window {
    height: 88vh;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  /* Toast Notification Placement on Mobile */
  .toast-container {
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
  }

  .toast {
    min-width: unset;
    width: 100%;
  }
}

@media (max-width: 380px) {
  .hero-headline {
    font-size: 1.5rem;
  }

  .hero-telemetry-grid {
    grid-template-columns: 1fr;
  }

  .telemetry-bar {
    grid-template-columns: 1fr;
  }

  .contact-email-val {
    font-size: 1.05rem;
  }

  .nav-btn .btn-label {
    display: none;
  }
}