/* ==========================================================================
   ALEX.DEV — High Performance Design System (Zero Framework, Pure Vanilla CSS)
   Optimized for Sub-millisecond Rendering, Zero CLS, and Maximum Lighthouse Scores
   ========================================================================== */

:root {
  /* Color Tokens (Dark Theme Default) */
  --bg: #121318;
  --surface: #121318;
  --surface-container-lowest: #0d0e13;
  --surface-container-low: #1a1b21;
  --surface-container: #1e1f25;
  --surface-container-high: #292a2f;
  --surface-container-highest: #34343a;
  
  --on-surface: #e3e1e9;
  --on-surface-variant: #c7c4d7;
  --outline: #908fa0;
  --outline-variant: rgba(70, 69, 84, 0.4);
  --outline-variant-light: rgba(70, 69, 84, 0.2);
  
  --primary: #c0c1ff;
  --primary-fixed: #e1e0ff;
  --primary-container: #8083ff;
  --on-primary: #1000a9;
  --on-primary-container: #0d0096;
  
  --secondary: #4cd7f6;
  --secondary-container: #03b5d3;
  --on-secondary: #003640;
  
  --tertiary: #ddb7ff;
  --tertiary-container: #b76dff;
  --on-tertiary: #490080;
  
  --emerald: #34d399;
  --emerald-bg: rgba(5, 46, 22, 0.7);
  --emerald-border: rgba(52, 211, 153, 0.4);
  --emerald-text: #a7f3d0;
  
  --amber: #fbbf24;
  --rose: #f43f5e;
  
  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Typography */
  --font-sans: 'Geist', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Layout Metrics */
  --max-w: 1280px;
  --header-h: 64px;
  --gutter: 24px;
  --gutter-mobile: 16px;
  
  /* Transitions */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --trans-fast: 0.2s var(--ease-spring);
  --trans-normal: 0.35s var(--ease-spring);
}

/* Light Theme Variables */
html.light {
  --bg: #f8f9fc;
  --surface: #ffffff;
  --surface-container-lowest: #eef1f6;
  --surface-container-low: #ffffff;
  --surface-container: #f3f5fa;
  --surface-container-high: #e7eaf2;
  --surface-container-highest: #d9dce6;
  
  --on-surface: #14151b;
  --on-surface-variant: #4b4e61;
  --outline: #777a8e;
  --outline-variant: rgba(119, 122, 142, 0.25);
  --outline-variant-light: rgba(119, 122, 142, 0.15);
  
  --primary: #4346df;
  --primary-fixed: #2f31b8;
  --primary-container: #5d60ff;
  --on-primary: #ffffff;
  --on-primary-container: #ffffff;
  
  --secondary: #0087a3;
  --secondary-container: #03a8cb;
  --on-secondary: #ffffff;
  
  --tertiary: #8b3fdc;
  --tertiary-container: #a252ff;
  --on-tertiary: #ffffff;
  
  --emerald-bg: rgba(220, 252, 231, 0.9);
  --emerald-border: rgba(16, 185, 129, 0.4);
  --emerald-text: #065f46;
}

/* ==========================================================================
   Base & Resets
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--on-surface);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

::selection {
  background-color: var(--primary-container);
  color: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--surface-container-lowest);
}
::-webkit-scrollbar-thumb {
  background: var(--surface-container-highest);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--outline);
}

/* ==========================================================================
   Typography Classes
   ========================================================================== */

.font-code {
  font-family: var(--font-mono);
}

.label-caps {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 16px;
  letter-spacing: 0.08em;
  font-weight: 600;
  text-transform: uppercase;
}

.text-code-body {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 20px;
  letter-spacing: -0.01em;
}

.text-code-metric {
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 36px;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.display-hero {
  font-family: var(--font-sans);
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 600;
}

.headline-lg {
  font-size: clamp(26px, 3.5vw, 36px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.headline-md {
  font-size: clamp(20px, 2.5vw, 24px);
  line-height: 1.35;
  letter-spacing: -0.015em;
  font-weight: 600;
}

.headline-sm {
  font-size: 18px;
  line-height: 26px;
  letter-spacing: -0.01em;
  font-weight: 600;
}

.body-lg {
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -0.005em;
}

.body-md {
  font-size: 15px;
  line-height: 1.6;
}

.body-sm {
  font-size: 13px;
  line-height: 20px;
}

.caption {
  font-size: 12px;
  line-height: 16px;
}

/* ==========================================================================
   Layout & Container
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter-mobile);
  padding-right: var(--gutter-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--gutter);
    padding-right: var(--gutter);
  }
}

.section-py {
  padding-top: 88px;
  padding-bottom: 88px;
}

@media (max-width: 640px) {
  .section-py {
    padding-top: 60px;
    padding-bottom: 60px;
  }
}

/* ==========================================================================
   Ambient Floating Mesh Orbs (GPU Accelerated)
   ========================================================================== */

.ambient-mesh {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: -20;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.orb-1 {
  top: 60px;
  left: 20%;
  width: 620px;
  height: 420px;
  background: radial-gradient(circle, rgba(192, 193, 255, 0.12) 0%, rgba(76, 215, 246, 0.08) 50%, transparent 80%);
  animation: floatOrb1 20s ease-in-out infinite alternate;
}

.orb-2 {
  top: 45%;
  right: 5%;
  width: 550px;
  height: 480px;
  background: radial-gradient(circle, rgba(183, 109, 255, 0.1) 0%, rgba(192, 193, 255, 0.06) 60%, transparent 80%);
  animation: floatOrb2 24s ease-in-out infinite alternate;
}

.orb-3 {
  bottom: 80px;
  left: 5%;
  width: 450px;
  height: 360px;
  background: radial-gradient(circle, rgba(76, 215, 246, 0.09) 0%, transparent 70%);
  animation: floatOrb1 18s ease-in-out infinite alternate;
}

@keyframes floatOrb1 {
  0% { transform: translate3d(0px, 0px, 0) scale(1); }
  50% { transform: translate3d(45px, -35px, 0) scale(1.08); }
  100% { transform: translate3d(-30px, 25px, 0) scale(0.94); }
}

@keyframes floatOrb2 {
  0% { transform: translate3d(0px, 0px, 0) scale(1); }
  50% { transform: translate3d(-40px, 35px, 0) scale(1.06); }
  100% { transform: translate3d(35px, -25px, 0) scale(0.96); }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 50;
  background-color: rgba(18, 19, 24, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--outline-variant-light);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.3);
  transition: background-color var(--trans-normal), border-color var(--trans-normal);
}

html.light .site-header {
  background-color: rgba(255, 255, 255, 0.88);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.header-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-badge {
  padding: 4px 8px;
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-xs);
  color: var(--secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: transform var(--trans-fast), border-color var(--trans-fast);
}

.brand-wrap:hover .brand-badge {
  transform: scale(1.05);
  border-color: var(--secondary);
}

.brand-role {
  color: var(--on-surface-variant);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  display: none;
}

@media (min-width: 1024px) {
  .brand-role {
    display: inline-block;
  }
}

.nav-links {
  display: none;
  align-items: center;
  gap: 4px;
}

@media (min-width: 1180px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--on-surface-variant);
  font-weight: 500;
  transition: all var(--trans-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--on-surface);
  background-color: var(--surface-container);
}

.nav-link.active {
  background-color: var(--surface-container-high);
  box-shadow: 0 0 12px rgba(192, 193, 255, 0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Lang switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  padding: 3px;
  background-color: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
}

.lang-btn {
  background: none;
  border: none;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--on-surface-variant);
  cursor: pointer;
  transition: all var(--trans-fast);
}

.lang-btn.active {
  background-color: var(--surface-container-highest);
  color: var(--on-surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* Theme toggle */
.theme-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background-color: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.theme-btn:hover {
  background-color: var(--surface-container-high);
  color: var(--on-surface);
  border-color: var(--primary);
}

.theme-btn:active {
  transform: scale(0.95);
}

.avatar-badge {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(76, 215, 246, 0.4);
  flex-shrink: 0;
  overflow: hidden;
  border: 2px solid var(--secondary);
}

.avatar-badge img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-profile-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 16px 6px 6px;
  border-radius: var(--radius-full);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  backdrop-filter: blur(8px);
  margin-bottom: 20px;
  transition: border-color var(--trans-fast);
}

.hero-profile-pill:hover {
  border-color: var(--secondary);
}

.hero-profile-thumb {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--secondary);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: inline-flex;
  width: 36px;
  height: 36px;
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  color: var(--on-surface);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

@media (min-width: 1180px) {
  .mobile-nav-toggle {
    display: none;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--surface);
  z-index: 45;
  padding: 24px var(--gutter-mobile);
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--outline-variant-light);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--trans-normal), opacity var(--trans-normal);
}

.mobile-drawer.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-drawer a {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant-light);
  color: var(--on-surface);
  font-weight: 500;
  font-size: 15px;
}

/* ==========================================================================
   Buttons & Interactive Elements
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--trans-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background-color: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 0 20px rgba(192, 193, 255, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-fixed);
  box-shadow: 0 0 28px rgba(192, 193, 255, 0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: var(--surface-container);
  border-color: var(--outline-variant);
  color: var(--on-surface);
}

.btn-outline:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  box-shadow: 0 0 20px rgba(76, 215, 246, 0.15);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

/* Icon Utilities */
.icon {
  width: 18px;
  height: 18px;
  display: inline-block;
  vertical-align: middle;
  fill: currentColor;
  flex-shrink: 0;
}

.icon-sm {
  width: 15px;
  height: 15px;
}

.icon-lg {
  width: 22px;
  height: 22px;
}

/* ==========================================================================
   Spotlight Cards & Micro-interactions
   ========================================================================== */

.spotlight-card {
  position: relative;
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  transition: transform var(--trans-normal), border-color var(--trans-normal), box-shadow var(--trans-normal);
  will-change: transform;
  overflow: hidden;
}

.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(400px circle at var(--mouse-x, -999px) var(--mouse-y, -999px), rgba(192, 193, 255, 0.08), transparent 65%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease;
  z-index: 1;
}

.spotlight-card:hover::before {
  opacity: 1;
}

.spotlight-card:hover {
  transform: translateY(-4px);
  border-color: var(--secondary);
  box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.5), 0 0 24px -4px rgba(76, 215, 246, 0.15);
}

/* Reveal on scroll — Cinematic Slow-in / Faster-out Physics */
.reveal-on-scroll {
  opacity: 0;
  transform: translate3d(0, 38px, 0);
  transition: opacity 1.2s cubic-bezier(0.76, 0.02, 0.24, 1),
              transform 1.3s cubic-bezier(0.76, 0.02, 0.24, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Status Pulsing Dot */
.ping-dot {
  position: relative;
  display: inline-flex;
  width: 9px;
  height: 9px;
}

.ping-dot .pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background-color: var(--emerald);
  opacity: 0.75;
  animation: pingAnimation 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.ping-dot .core {
  position: relative;
  display: inline-flex;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--emerald);
  box-shadow: 0 0 8px var(--emerald);
}

@keyframes pingAnimation {
  75%, 100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  position: relative;
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: 72px;
}

.hero-glow-1 {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(circle, rgba(192, 193, 255, 0.12) 0%, rgba(76, 215, 246, 0.08) 50%, transparent 70%);
  filter: blur(120px);
  pointer-events: none;
  z-index: -10;
  border-radius: 50%;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
  transition: border-color var(--trans-fast);
}

.status-badge:hover {
  border-color: var(--secondary);
}

.hero-title {
  max-width: 980px;
  margin-bottom: 24px;
  color: var(--on-surface);
}

.hero-subtitle {
  max-width: 780px;
  margin-bottom: 32px;
  color: var(--on-surface-variant);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.terminal-ping {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant-light);
  color: var(--on-surface-variant);
  font-family: var(--font-mono);
  font-size: 13px;
}

@media (min-width: 640px) {
  .terminal-ping {
    display: inline-flex;
  }
}

/* Runtime dock */
.runtime-dock {
  background-color: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 36px;
}

.dock-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--outline-variant-light);
}

.dock-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dock-dot.red { background-color: var(--rose); }
.dock-dot.yellow { background-color: var(--amber); }
.dock-dot.green { background-color: var(--emerald); }

.dock-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  background-color: var(--surface-container-high);
  border: 1px solid var(--outline-variant-light);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--on-surface);
  transition: all var(--trans-fast);
  cursor: default;
}

.tech-tag:hover {
  border-color: var(--secondary);
  background-color: var(--surface-container);
  transform: translateY(-1px);
}

.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* Metrics 4-grid */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .metrics-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.metric-label {
  color: var(--on-surface-variant);
  margin-bottom: 8px;
}

.metric-value {
  margin-bottom: 6px;
}

.metric-value.cyan { color: var(--secondary); }
.metric-value.primary { color: var(--primary); }

.metric-desc {
  color: var(--on-surface-variant);
}

/* ==========================================================================
   Methodology & Pillars Section
   ========================================================================== */

.section-methodology {
  background-color: var(--surface-container-lowest);
  border-top: 1px solid var(--outline-variant-light);
  border-bottom: 1px solid var(--outline-variant-light);
}

.section-header-split {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .section-header-split {
    flex-direction: row;
    align-items: flex-end;
  }
}

.pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pillar-card {
  padding: 24px;
  background-color: var(--surface-container-low);
  display: flex;
  flex-direction: column;
}

.pillar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.pillar-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--trans-fast), border-color var(--trans-fast);
}

.pillar-card:hover .pillar-icon-box {
  transform: scale(1.1);
  border-color: var(--secondary);
}

.pillar-bottom {
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px solid var(--outline-variant-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ==========================================================================
   Projects Showcase Section
   ========================================================================== */

.filters-bar {
  display: flex;
  align-items: center;
  padding: 4px;
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  overflow-x: auto;
  gap: 4px;
}

.filter-btn {
  background: none;
  border: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--trans-fast);
}

.filter-btn.active {
  background-color: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 0 12px rgba(192, 193, 255, 0.2);
}

.projects-stack {
  display: flex;
  flex-direction: column;
  gap: 36px;
  margin-top: 32px;
}

.project-card {
  transition: opacity 0.4s var(--ease-spring), transform 0.4s var(--ease-spring);
}

.project-card.filter-hidden {
  opacity: 0;
  transform: scale(0.97) translateY(16px);
  pointer-events: none;
  display: none;
}

.project-chrome {
  padding: 10px 16px;
  background-color: var(--surface-container);
  border-bottom: 1px solid var(--outline-variant-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-inner {
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

@media (min-width: 1024px) {
  .project-inner {
    grid-template-columns: 7fr 5fr;
    padding: 32px;
  }
}

.project-metrics-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant-light);
  margin-bottom: 18px;
}

.project-media-wrap {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--outline-variant);
  background-color: var(--surface-container);
}

.project-media-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.6s var(--ease-spring);
}

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

.project-media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(18, 19, 24, 0.85) 0%, rgba(18, 19, 24, 0.2) 60%, transparent 100%);
  pointer-events: none;
}

.telemetry-pill {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background-color: rgba(18, 19, 24, 0.82);
  backdrop-filter: blur(8px);
  border: 1px solid var(--outline-variant);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ==========================================================================
   Technical Footprint & Community
   ========================================================================== */

.section-community {
  background-color: var(--surface-container-lowest);
  border-top: 1px solid var(--outline-variant-light);
  border-bottom: 1px solid var(--outline-variant-light);
}

.community-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 900px) {
  .community-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.community-card {
  padding: 24px;
  background-color: var(--surface-container-low);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.quote-box {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant-light);
  margin-bottom: 16px;
  position: relative;
}

.quote-mark {
  font-size: 32px;
  line-height: 1;
  font-family: serif;
  color: var(--outline);
  opacity: 0.35;
  position: absolute;
  top: 8px;
  left: 10px;
}

.stat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant-light);
  font-family: var(--font-mono);
  font-size: 13px;
  margin-bottom: 8px;
}

.articles-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.article-item {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant-light);
  transition: border-color var(--trans-fast);
}

.article-item:hover {
  border-color: var(--secondary);
}

/* ==========================================================================
   Contact & Quote Form
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 5fr 7fr;
  }
}

.channel-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  text-decoration: none;
  transition: all var(--trans-fast);
  margin-bottom: 12px;
}

.channel-card:hover {
  transform: translateY(-2px);
  border-color: var(--secondary);
}

.channel-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--surface-container-high);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  transition: transform var(--trans-fast);
}

.channel-card:hover .channel-icon {
  transform: scale(1.08);
}

.availability-box {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  margin-top: 24px;
}

/* Form Styles */
.quote-form-wrap {
  padding: 24px;
  border-radius: var(--radius-xl);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

@media (min-width: 768px) {
  .quote-form-wrap {
    padding: 32px;
  }
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface);
  font-size: 14px;
  outline: none;
  transition: all var(--trans-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(192, 193, 255, 0.2), 0 0 16px rgba(192, 193, 255, 0.2);
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='%23c7c4d7'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.demand-pills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

@media (min-width: 580px) {
  .demand-pills-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.demand-pill {
  padding: 8px 6px;
  border-radius: var(--radius-xs);
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.demand-pill:hover {
  border-color: var(--outline);
  color: var(--on-surface);
}

.demand-pill.active {
  background-color: var(--surface-container-high);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 12px rgba(192, 193, 255, 0.2);
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 600px) {
  .form-row-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.form-success-alert {
  display: none;
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  background-color: var(--emerald-bg);
  border: 1px solid var(--emerald-border);
  color: var(--emerald-text);
  animation: fadeIn 0.4s ease;
}

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

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  width: 100%;
  background-color: var(--surface-container-lowest);
  padding: 36px 0;
  border-top: 1px solid var(--outline-variant-light);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    text-align: left;
  }
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-link {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--on-surface-variant);
  transition: color var(--trans-fast);
}

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

/* ==========================================================================
   Tech Modal Dialog (Native & Accessible)
   ========================================================================== */

.tech-modal {
  margin: auto;
  max-width: 680px;
  width: calc(100% - 32px);
  padding: 0;
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-xl);
  color: var(--on-surface);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  outline: none;
}

.tech-modal::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-header {
  padding: 16px 20px;
  background: var(--surface-container-low);
  border-bottom: 1px solid var(--outline-variant-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 24px;
  max-height: 75vh;
  overflow-y: auto;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--on-surface-variant);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  padding: 4px;
  transition: color var(--trans-fast);
}

.modal-close-btn:hover {
  color: var(--on-surface);
}

/* ==========================================================================
   Reduced Motion Accessibility
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .orb-1, .orb-2, .orb-3 {
    animation: none !important;
  }
  
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
  }
  
  .spotlight-card:hover {
    transform: none !important;
  }
}