/* Sustainable Impact - Light/Dark Theme Support */

/* Dark Theme (Default) */
:root {
  --bg: #0A0A0A;
  --bg-elevated: #111111;
  --bg-card: #161616;
  --text: #FFFFFF;
  --text-muted: #A0A0A0;
  --text-dim: #666666;
  --accent: #E07830;
  --accent-hover: #F08940;
  --accent-glow: rgba(224, 120, 48, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);
  --nav-bg: rgba(10, 10, 10, 0.92);
  --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.4);
  --logo-filter: none;
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light Theme */
[data-theme="light"] {
  --bg: #F8F6F3;
  --bg-elevated: #FFFFFF;
  --bg-card: #FFFFFF;
  --text: #1A1A1A;
  --text-muted: #5C5C5C;
  --text-dim: #8C8C8C;
  --accent: #E07830;
  --accent-hover: #C96820;
  --accent-glow: rgba(224, 120, 48, 0.1);
  --border: rgba(0, 0, 0, 0.06);
  --border-hover: rgba(0, 0, 0, 0.12);
  --nav-bg: rgba(248, 246, 243, 0.92);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
  --logo-filter: none;
}

/* Lab Theme (Electric Teal/Green) */
.theme-lab {
  --accent: #00B4D8;
  /* Electric Blue/Teal for Light/Dark base */
  --accent-hover: #0096C7;
  /* Darker on hover */
}

/* Specific Lab Theme adjustments for Dark Mode if needed */
[data-theme="dark"] .theme-lab {
  --accent: #22D3EE;
  /* Brighter Cyan for Dark Mode */
  --accent-hover: #06B6D4;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.4s var(--transition-smooth), color 0.4s var(--transition-smooth);
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

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

ul,
ol {
  list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Space Grotesk', -apple-system, sans-serif;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--text);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

.label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.label::before {
  content: '';
  width: 8px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 4.5rem 0;
}

.bg-elevated {
  background: var(--bg-elevated);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: transparent;
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 2rem;
  max-width: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 1;
  min-width: 0;
}

.nav-logo-img {
  height: 40px;
  width: auto;
  transition: filter 0.3s ease;
}

[data-theme="dark"] .nav-logo-img {
  filter: var(--logo-filter);
}

.nav-logo-text {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 1.0625rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-shrink: 0;
}

.nav-link {
  position: relative;
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color 0.25s var(--transition-smooth);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--transition-smooth);
}

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

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

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s var(--transition-smooth);
  color: var(--text-muted);
}

.theme-toggle:hover {
  border-color: var(--border-hover);
  color: var(--text);
  transform: rotate(15deg);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.nav-dropdown-toggle svg {
  width: 14px;
  height: 14px;
  opacity: 0.5;
  transition: all 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-toggle svg {
  transform: rotate(180deg);
  opacity: 1;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 1rem);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s var(--transition-smooth);
  box-shadow: var(--card-shadow-hover);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  transition: all 0.2s var(--transition-smooth);
  position: relative;
}

.nav-dropdown-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--accent);
  border-radius: 1px;
  transition: height 0.2s var(--transition-smooth);
}

.nav-dropdown-item:hover {
  background: var(--border);
  padding-left: 1.25rem;
}

.nav-dropdown-item:hover::before {
  height: 60%;
}

.nav-dropdown-item-title {
  font-weight: 500;
  color: var(--text);
  margin-bottom: 2px;
  font-size: 0.875rem;
}

.nav-dropdown-item-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.nav-mobile-toggle {
  display: none;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: all 0.2s ease;
}

/* Mobile Menu */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 85%;
  max-width: 380px;
  background: var(--bg-elevated);
  padding: 2rem;
  transform: translateX(100%);
  transition: transform 0.4s ease, visibility 0.4s ease;
  z-index: 1001;
  overflow-y: auto;
  visibility: hidden;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}

.mobile-menu.open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
}

.mobile-menu-close {
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
}

.mobile-menu-link {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--text);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.mobile-menu-sublinks {
  padding-left: 1rem;
  margin-bottom: 0.5rem;
}

.mobile-menu-sublink {
  display: block;
  font-size: 1rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  transition: all 0.3s var(--transition-smooth);
  cursor: pointer;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s var(--transition-smooth);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

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

.btn-secondary:hover {
  border-color: var(--text);
  transform: translateY(-1px);
}

.btn-nav {
  padding: 0.625rem 1.25rem;
  font-size: 0.8125rem;
}

.btn-lg {
  font-size: 0.9375rem;
  padding: 1rem 2rem;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* Systems Nodes Visualization Container */
.systems-visualization {
  position: absolute;
  top: 0;
  right: 0;
  width: 65%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.85;
}

.systems-visualization svg {
  width: 100%;
  height: 100%;
}

/* Node styling - Main accent (orange) */
.systems-node {
  fill: var(--accent);
  opacity: 0.6;
}

.systems-node-core {
  fill: var(--accent);
  opacity: 0.9;
}

.systems-node-glow {
  fill: var(--accent);
  opacity: 0.15;
  filter: blur(8px);
}

/* Lab nodes - Teal/Cyan color */
.lab-node {
  fill: #22D3EE;
  opacity: 0.6;
}

.lab-node-core {
  fill: #22D3EE;
  opacity: 0.9;
}

.lab-node-glow {
  fill: #22D3EE;
  opacity: 0.15;
  filter: blur(8px);
}

/* Connection lines - Main */
.systems-connection {
  stroke: var(--accent);
  stroke-width: 1;
  fill: none;
  opacity: 0.25;
}

.systems-connection-active {
  stroke: var(--accent);
  stroke-width: 1.5;
  fill: none;
  opacity: 0.4;
  stroke-dasharray: 8 4;
  animation: flowDash 3s linear infinite;
}

/* Connection lines - Lab (teal) */
.systems-connection-lab {
  stroke: #22D3EE;
  stroke-width: 1;
  fill: none;
  opacity: 0.3;
}

/* Bridge connections (Lab to Main - gradient effect via dashed) */
.systems-connection-bridge {
  stroke: url(#bridgeGradient);
  stroke-width: 1.5;
  fill: none;
  opacity: 0.5;
  stroke-dasharray: 6 4;
  animation: flowDash 4s linear infinite;
}

/* Fallback for bridge without gradient */
.lab-bridge .systems-connection-bridge {
  stroke: #22D3EE;
  opacity: 0.35;
}

.emerging-bridge .systems-connection-bridge {
  stroke: #22D3EE;
  opacity: 0.3;
}

/* Node animations */
@keyframes nodeFloat1 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(8px, -12px); }
  50% { transform: translate(-5px, 8px); }
  75% { transform: translate(12px, 5px); }
}

@keyframes nodeFloat2 {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-10px, 8px); }
  50% { transform: translate(6px, -10px); }
  75% { transform: translate(-8px, -5px); }
}

@keyframes nodeFloat3 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(15px, 10px); }
  66% { transform: translate(-8px, -12px); }
}

@keyframes nodePulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.15); }
}

@keyframes flowDash {
  0% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -24; }
}

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

@keyframes fadeInNode {
  0% { opacity: 0; transform: scale(0.5); }
  100% { opacity: 1; transform: scale(1); }
}

/* Animated node groups */
.node-group-1 { animation: nodeFloat1 20s ease-in-out infinite; }
.node-group-2 { animation: nodeFloat2 25s ease-in-out infinite; }
.node-group-3 { animation: nodeFloat3 18s ease-in-out infinite; }
.node-group-4 { animation: nodeFloat1 22s ease-in-out infinite reverse; }
.node-group-5 { animation: nodeFloat2 28s ease-in-out infinite reverse; }

.node-pulse-1 { animation: nodePulse 4s ease-in-out infinite; }
.node-pulse-2 { animation: nodePulse 5s ease-in-out infinite 1s; }
.node-pulse-3 { animation: nodePulse 6s ease-in-out infinite 2s; }

.orbit-spin {
  transform-origin: center;
  animation: orbitRotate 60s linear infinite;
}

.orbit-spin-reverse {
  transform-origin: center;
  animation: orbitRotate 45s linear infinite reverse;
}

/* Responsive adjustments for visualization */
@media (max-width: 1024px) {
  .systems-visualization {
    width: 50%;
    opacity: 0.6;
  }
}

@media (max-width: 768px) {
  .systems-visualization {
    width: 100%;
    height: 50%;
    top: auto;
    bottom: 0;
    opacity: 0.4;
  }
}

@media (max-width: 600px) {
  .systems-visualization {
    opacity: 0.25;
  }
}

/* Light theme adjustments - increased visibility */
[data-theme="light"] .systems-visualization {
  opacity: 0.8;
}

[data-theme="light"] .systems-node {
  opacity: 0.75;
}

[data-theme="light"] .systems-node-core {
  opacity: 1;
}

[data-theme="light"] .systems-node-glow {
  opacity: 0.2;
}

[data-theme="light"] .systems-connection {
  opacity: 0.35;
}

[data-theme="light"] .systems-connection-active {
  opacity: 0.5;
}

/* Light theme - Lab nodes */
[data-theme="light"] .lab-node {
  fill: #0891B2;
  opacity: 0.75;
}

[data-theme="light"] .lab-node-core {
  fill: #0891B2;
  opacity: 1;
}

[data-theme="light"] .lab-node-glow {
  fill: #0891B2;
  opacity: 0.2;
}

[data-theme="light"] .systems-connection-lab {
  stroke: #0891B2;
  opacity: 0.4;
}

[data-theme="light"] .systems-connection-bridge {
  stroke: #0891B2;
  opacity: 0.4;
}

/* Mini Systems Visualization for Subpages */
.systems-visualization-mini {
  width: 220px;
  height: 220px;
  pointer-events: none;
  opacity: 0.7;
  flex-shrink: 0;
}

.page-hero > .container {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.page-hero-content {
  flex: 1;
  max-width: 700px;
}

.systems-visualization-mini svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* Lab theme mini visualization uses teal colors */
.theme-lab .systems-visualization-mini .mini-node {
  fill: #22D3EE;
}

.theme-lab .systems-visualization-mini .mini-node-core {
  fill: #22D3EE;
}

.theme-lab .systems-visualization-mini .mini-connection {
  stroke: #22D3EE;
}

/* Light theme adjustments for mini visualization */
[data-theme="light"] .systems-visualization-mini {
  opacity: 0.65;
}

[data-theme="light"] .theme-lab .systems-visualization-mini .mini-node {
  fill: #0891B2;
}

[data-theme="light"] .theme-lab .systems-visualization-mini .mini-node-core {
  fill: #0891B2;
}

[data-theme="light"] .theme-lab .systems-visualization-mini .mini-connection {
  stroke: #0891B2;
}

/* Responsive adjustments for mini visualization */
@media (max-width: 1200px) {
  .systems-visualization-mini {
    width: 180px;
    height: 180px;
  }
}

@media (max-width: 1024px) {
  .systems-visualization-mini {
    width: 150px;
    height: 150px;
    opacity: 0.6;
  }
}

@media (max-width: 768px) {
  .page-hero > .container {
    flex-direction: column;
  }

  .systems-visualization-mini {
    display: none;
  }
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.hero-label {
  margin-bottom: 1.5rem;
}

.hero-title {
  margin-bottom: 1.75rem;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Page Hero */
.page-hero {
  padding: 150px 0 70px;
  position: relative;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 50%;
  height: 150%;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.5;
}

.page-hero-label {
  margin-bottom: 1rem;
}

.page-hero-title {
  margin-bottom: 1.25rem;
  max-width: 700px;
}

.page-hero-description {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 560px;
}

/* Section Headers */
.section-header {
  margin-bottom: 3.5rem;
}

.section-header-split {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 3rem;
  flex-wrap: wrap;
}

.section-header-intro {
  max-width: 360px;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.65;
}

.section-label {
  margin-bottom: 0.75rem;
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: all 0.3s var(--transition-smooth);
  position: relative;
}

.section-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--transition-smooth);
}

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

.section-link:hover::after {
  width: calc(100% - 1.5rem);
}

.section-link svg {
  transition: transform 0.3s var(--transition-spring);
}

.section-link:hover svg {
  transform: translateX(4px);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: all 0.35s var(--transition-smooth);
  display: block;
  box-shadow: var(--card-shadow);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.35s var(--transition-smooth);
  pointer-events: none;
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

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

.card-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--accent);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.card-title {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.9375rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-dim);
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.25s ease;
}

.card:hover .card-link {
  opacity: 1;
  transform: translateY(0);
  color: var(--accent);
}

.card-link svg {
  width: 14px;
  height: 14px;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.focus-grid-5 {
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.verticals-cta {
  margin-top: 3rem;
  background: var(--bg-elevated);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Initiative Preview Cards */
.initiatives-preview {
  margin-top: 3.5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}

.initiative-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.initiative-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  transition: all 0.35s var(--transition-smooth);
  box-shadow: var(--card-shadow);
  position: relative;
}

.initiative-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.35s var(--transition-smooth);
  pointer-events: none;
}

.initiative-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

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

.initiative-card-content {
  flex: 1;
}

.initiative-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.initiative-card-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.initiative-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.focus-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--accent);
  padding: 0.25rem 0.5rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.initiative-focus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.focus-tag-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent);
  padding: 0.375rem 0.75rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.25s var(--transition-smooth);
}

.focus-tag-link:hover {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* Principles Bar */
.principles-bar {
  background: var(--bg-elevated);
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.principle-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--text);
}

.principle-detail {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Quote Section */
.quote-section {
  padding: 6rem 0;
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.quote-section::before {
  content: '"';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Space Grotesk', serif;
  font-size: 20rem;
  color: var(--border);
  opacity: 0.3;
  pointer-events: none;
  line-height: 1;
}

.quote-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.quote-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  color: var(--text);
  font-style: italic;
}

.quote-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  transition: opacity 0.2s ease;
}

.quote-link:hover {
  opacity: 0.7;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: all 0.35s var(--transition-smooth);
  box-shadow: var(--card-shadow);
  position: relative;
}

.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.35s var(--transition-smooth);
  pointer-events: none;
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

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

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.project-card-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.project-card-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--accent);
  padding: 0.25rem 0.5rem;
  border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--accent-glow);
  transition: all 0.3s var(--transition-smooth);
}

.project-card:hover .project-card-status {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 20%, transparent);
}

.project-card-title {
  font-size: 1.1875rem;
  margin-bottom: 0.375rem;
}

.project-card-partner {
  font-size: 0.8125rem;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.85;
}

.project-card-description {
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.9375rem;
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* Partners */
.partners-bar {
  padding: 4.5rem 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.partners-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

.partners-text {
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 2rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.partners-logos {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.partner-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* CTA Section */
.cta-section {
  padding: 6rem 0;
  text-align: center;
  background: var(--bg-elevated);
}

.cta-content {
  max-width: 520px;
  margin: 0 auto;
}

.cta-title {
  margin-bottom: 1.25rem;
}

.cta-description {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 4rem;
  align-items: start;
}

.content-sidebar {
  position: sticky;
  top: 100px;
}

.content-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.content-body h3 {
  margin-bottom: 1.25rem;
}

.content-body h4 {
  margin-top: 2rem;
  margin-bottom: 0.625rem;
  font-size: 1.0625rem;
}

.content-body p {
  color: var(--text-muted);
  line-height: 1.75;
  font-size: 1rem;
}

.content-body ul {
  margin: 1.25rem 0;
}

.content-body li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.625rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.content-body li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.content-body li strong {
  color: var(--text);
  font-weight: 500;
}

/* Forms */
.form {
  max-width: 520px;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 500;
  font-size: 0.8125rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.9375rem;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.2s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-dim);
}

.form-textarea {
  min-height: 130px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
}

.form-select option {
  background: var(--bg-card);
}

/* Footer */
.footer {
  background: var(--bg);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
}

.footer-logo-img {
  height: 32px;
  width: auto;
}

[data-theme="dark"] .footer-logo-img {
  filter: var(--logo-filter);
}

.footer-brand-text {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text);
}

.footer-about {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 250px;
}

.footer-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.footer-link {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.625rem;
  transition: all 0.2s var(--transition-smooth);
}

.footer-link:hover {
  color: var(--text);
  transform: translateX(3px);
}

.footer-email {
  color: var(--accent);
  font-size: 0.8125rem;
}

.footer-social {
  display: flex;
  gap: 0.875rem;
  margin-top: 1.25rem;
}

.footer-social a {
  font-size: 0.8125rem;
  color: var(--text-dim);
  transition: color 0.15s ease;
}

.footer-social a:hover {
  color: var(--text);
}

.footer-social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.footer-social-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.footer-acknowledgment {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.footer-acknowledgment p {
  font-size: 0.6875rem;
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 600px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  font-size: 0.6875rem;
  color: var(--text-dim);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  font-size: 0.6875rem;
  color: var(--text-dim);
  transition: color 0.15s ease;
}

.footer-legal a:hover {
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .content-sidebar {
    position: static;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .nav-mobile-toggle {
    display: block;
  }

  .mobile-menu,
  .mobile-menu-overlay {
    display: block;
  }

  .nav-inner {
    gap: 1rem;
  }

  .nav-logo-text {
    font-size: 0.9375rem;
  }

  .section {
    padding: 4.5rem 0;
  }

  .section-header-split {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .projects-grid,
  .focus-grid,
  .focus-grid-5 {
    grid-template-columns: 1fr;
  }

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

  .initiatives-preview {
    margin-top: 2.5rem;
    padding-top: 2rem;
  }

  /* Improved mobile menu styling */
  .mobile-menu {
    width: 90%;
    max-width: 380px;
    padding: 1.5rem;
  }

  .mobile-menu-link {
    font-size: 1.25rem;
    padding: 0.875rem 0;
  }

  .mobile-menu-sublinks {
    padding-left: 0.75rem;
    margin-bottom: 0.25rem;
    border-left: 2px solid var(--border);
    margin-left: 0.25rem;
  }

  .mobile-menu-sublink {
    font-size: 0.9375rem;
    padding: 0.5rem 0.75rem;
  }
}

/* Tablet / Foldable breakpoint (e.g., ZFold wide view) */
@media (max-width: 768px) {
  .nav-logo-text {
    font-size: 0.875rem;
    max-width: 180px;
  }

  .container {
    padding: 0 1.5rem;
  }

  .hero {
    padding: 130px 0 80px;
  }

  .page-hero {
    padding: 130px 0 60px;
  }

  .mobile-menu {
    width: 85%;
    max-width: 320px;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 1rem;
  }

  .nav-logo-text {
    font-size: 0.8125rem;
    max-width: 140px;
  }

  .nav-logo-img {
    height: 32px;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .principles-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  /* Mobile initiative cards */
  .initiative-card {
    padding: 1rem;
  }

  .initiative-card-title {
    font-size: 0.9375rem;
  }

  .initiative-card-desc {
    font-size: 0.75rem;
  }

  .focus-tag {
    font-size: 0.5625rem;
    padding: 0.1875rem 0.375rem;
  }

  /* Mobile menu adjustments */
  .mobile-menu {
    width: 100%;
    max-width: none;
  }

  .mobile-menu-header {
    margin-bottom: 2rem;
  }

  .mobile-menu-link {
    font-size: 1.125rem;
    padding: 0.75rem 0;
  }

  /* Touch-friendly tap targets */
  .mobile-menu-sublink {
    padding: 0.625rem 0.75rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
}

/* Very small screens (320px and below) */
@media (max-width: 380px) {
  .nav-logo-text {
    display: none;
  }

  .container {
    padding: 0 0.75rem;
  }

  .hero {
    padding: 110px 0 50px;
  }

  .page-hero {
    padding: 110px 0 50px;
  }

  h1 {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  .hero-description {
    font-size: 1rem;
  }

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

/* Status Pills for Experiments */
.status-pill {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.125rem 0.625rem;
  border-radius: 999px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  display: inline-block;
}

[data-theme="light"] .status-pill {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-color);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .status-pill {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-color);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.status-prototyping {
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.3) !important;
  background: rgba(245, 158, 11, 0.1) !important;
}

.status-field-testing {
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.3) !important;
  background: rgba(16, 185, 129, 0.1) !important;
}

.status-synthesizing {
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.3) !important;
  background: rgba(59, 130, 246, 0.1) !important;
}

/* Three Horizons Layout for Provocations */
.provocation-horizons {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9375rem;
}

.horizon-line {
  padding-left: 1rem;
  border-left: 2px solid var(--border-color);
  margin: 0;
  line-height: 1.5;
  color: var(--text-muted);
}

.horizon-line strong {
  color: var(--text-color);
  font-weight: 600;
  margin-right: 0.25rem;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.horizon-line.highlight {
  border-left-color: var(--primary-color);
  background: linear-gradient(90deg, var(--bg-color-alt) 0%, transparent 100%);
  color: var(--text-color);
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  margin-left: -0.5rem;
  /* Optical alignment */
  border-radius: 0 4px 4px 0;
}

/* Featured Provocation Card */
.provocation-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  text-decoration: none;
  color: inherit;
  transition: all 0.35s var(--transition-smooth);
  box-shadow: var(--card-shadow);
}

.provocation-feature:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

.provocation-feature-image {
  position: relative;
  overflow: hidden;
  min-height: 320px;
}

.provocation-feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.provocation-feature:hover .provocation-feature-image img {
  transform: scale(1.03);
}

.provocation-feature-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 60%, var(--bg-card) 100%);
  pointer-events: none;
}

.provocation-feature-body {
  padding: 2rem 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.provocation-feature-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  line-height: 1.15;
}

.provocation-feature-subtitle {
  font-size: 0.9375rem;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.85;
}

.provocation-feature-description {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.provocation-feature-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: gap 0.3s ease;
}

.provocation-feature:hover .provocation-feature-cta {
  gap: 0.75rem;
}

@media (max-width: 768px) {
  .provocation-feature {
    grid-template-columns: 1fr;
  }
  .provocation-feature-image {
    min-height: 220px;
  }
  .provocation-feature-overlay {
    background: linear-gradient(180deg, transparent 50%, var(--bg-card) 100%);
  }
  .provocation-feature-body {
    padding: 1.5rem;
  }
  .provocation-feature-title {
    font-size: 1.5rem;
  }
}

/* Subtle entrance animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.hero-content {
  animation: fadeInUp 0.8s var(--transition-smooth) forwards;
}

.hero-label {
  animation: fadeIn 0.6s var(--transition-smooth) 0.1s both;
}

.hero-title {
  animation: fadeInUp 0.7s var(--transition-smooth) 0.2s both;
}

.hero-description {
  animation: fadeInUp 0.7s var(--transition-smooth) 0.35s both;
}

.hero-buttons {
  animation: fadeInUp 0.7s var(--transition-smooth) 0.5s both;
}

/* Staggered card animations on page load */
.focus-grid .card,
.projects-grid .project-card,
.initiative-cards-grid .initiative-card {
  animation: fadeInUp 0.6s var(--transition-smooth) both;
}

.focus-grid .card:nth-child(1),
.projects-grid .project-card:nth-child(1),
.initiative-cards-grid .initiative-card:nth-child(1) {
  animation-delay: 0.1s;
}

.focus-grid .card:nth-child(2),
.projects-grid .project-card:nth-child(2),
.initiative-cards-grid .initiative-card:nth-child(2) {
  animation-delay: 0.2s;
}

.focus-grid .card:nth-child(3),
.projects-grid .project-card:nth-child(3),
.initiative-cards-grid .initiative-card:nth-child(3) {
  animation-delay: 0.3s;
}

.focus-grid .card:nth-child(4),
.projects-grid .project-card:nth-child(4) {
  animation-delay: 0.4s;
}

.focus-grid .card:nth-child(5),
.projects-grid .project-card:nth-child(5) {
  animation-delay: 0.5s;
}

.focus-grid .card:nth-child(6),
.projects-grid .project-card:nth-child(6) {
  animation-delay: 0.6s;
}

/* Subtle selection highlight */
::selection {
  background: var(--accent);
  color: white;
}

::-moz-selection {
  background: var(--accent);
  color: white;
}

/* Enhanced focus states for accessibility */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Smooth scroll anchor offset for fixed nav */
:target {
  scroll-margin-top: 100px;
}